Excavator tooth unit, excavator tooth and tooth unit holder

FIELD: earth-moving equipment.

SUBSTANCE: proposed excavator tooth unit contains holder with main part and nose part, both arranged coaxially relative to longitudinal axial line of holder. Main part is made for fastening said holder to excavator. Nose part terminates in free front end and it has upper and lower surfaces located mainly respectively higher and lower than longitudinal axial line of said holder. Upper surface of said nose part has two inclined sides arranged at opposite sides from longitudinal axial line and in front relative to rear end of said nose part over its length. Each inclined side of said upper surface is arranged at angle of 25-65° to horizontal plane. Lower surface of said nose part has two sides arranged at opposite sides relative to longitudinal axial line of said holder. Cavity made in said nose part comes to one of inclined sides of said upper surface of nose part of holder, being arranged along axis intersecting opposite sides of upper and lower surfaces of said nose part at angle of 30-60° to horizontal plane. Excavator tooth has front and rear end parts. Blind space open to rear end of said tooth and designed for fitting-in section of nose part of holder is made in rear end part of said tooth. Tooth is provided with hole arranged in working combination with inclined cavity of holder when tooth and holder are in working connection. Pin-type locking device is provided being arranged in cavity of said holder and at least partially passed through hole in said tooth for detachable fastening of tooth and holder in working connected. Tooth and holder described in invention form with tooth unit a ground of inventions.

EFFECT: improved reliability of excavator tooth unit.

40 cl, 31 dwg

 

The present invention relates generally to earth moving equipment, and more particularly to a composite excavator teeth, the site includes excavating tooth and holder associated with each other in working connection with the locking pin of the device.

Excavating equipment used in mining, construction and many other excavation works, usually includes sets placed with a gap grantozajaviteli of teeth mounted in a row on the visor of the bucket. Teeth bent forward to capture and crumbling of the material that is collected in the bucket. In the technique of very long appreciated the benefits received by the connection of the relatively small digging or excavating tooth with a relatively large holder or support, which, in turn, is connected with the bucket of the excavator equipment. Usually the holder or bearing includes a main body, adapted for attachment to the front edge of the bucket, and the nose portion with a free end. In many cases, the coupling between the digging tooth and holder require digging or excavating tooth socket or cavity that is open towards the rear side of the tooth, and its fit to the bow holder at a considerable section of its length. Suitable pin connects C is b and the holder working in combination with each other.

Usually, especially in today's global economy, the elements of the composite excavator gear site are manufactured in various parts of the world. That is, excavator tooth or tip can be manufactured in one part of the world, such as China, holder, or support for a tooth can independently be carried out in another part, for example in Mexico city. It is usual for individual parts or elements of excavator teeth, site collected only where there is a machine or device on which they should be installed. Accordingly, parts or elements of the composite gear of the site require the free tolerances, allowing parts manufactured on a variety of hardware in the world, to be adapted to work in combination with each other.

As will be clear to experts, being connected to the bucket or similar body, excavator teeth, nodes often abrasive impact and therefore are subjected to rapid and significant wear. In addition, rapid wear of the parts of the elements of excavator teeth, node increases due to the relatively large forces that occur during operation of the excavator gear site. Typically, each excavator tooth has a transverse cutting edge located at the front edge of the tooth to facilitate penetration into the soil and it is crushing. The cutting edge of each tooth is oriented across and generally parallel to vicopisano working surface.

Despite the special steps that can be applied in the manufacture of the tooth, in operation, the front cutting edge wears out quickly and Satupaitea, becoming ineffective, and therefore requires replacement. Composite design gear unit provides an advantageous possibility of replacing the excavator tooth regardless of the holder. Depending on the type of excavation work on an existing holder teeth can be replaced anywhere from five to thirty times in order to maintain the sharpness of the cutting edges. Replacement of worn excavator gear parts on the spot is a regular and sometimes daily.

As should be clear, in the process of excavating or loading operations at each of excavator teeth node associated with excavating equipment, transmitted extremely large vertical forces. Known holder or support has a generally flat upper and lower surfaces which contact corresponding to the flat surface of the excavator tooth. In extreme loads excavator tooth, although it is connected through a pin or similar body tends to move up and down relative to the bow holder. Freedoms is the first landing part of the elements increases the movement of the tooth relative to the holder or support. The tendency of the tooth to move relative to the holder exacerbates the problem of wear, especially in the area of the cavity and the bow holder. The presence of dust and dirt between the sliding mating surfaces of the excavator tooth and holder also increases the wear parts of the elements of the excavator gear site. Thus, the critical pair between the excavator tooth and holder is subjected to rapid wear, which can lead to destruction of the tooth cavity and/or the premature replacement of the holder.

Although the vertical load transferred to each timing node in the process of excavation, substantial, there are also horizontal or lateral forces transmitted to the tooth. For example, as should be clear, can be a significant horizontal loads and forces transmitted to excavating tooth mounted on the cultivator or similar earth moving equipment. Accordingly, each of excavator teeth, the node must be adapted to horizontal and vertical loads transmitted to it during normal operation. There is no doubt that if the excavator tooth is broken in the process, the stirring broken timing element with the remainder of the inflowing material can cause significant problems during subsequent processing of the material, for example, when the operation draw the population. If you lost a tooth or tip holder quickly damaged, because his nose is not manufactured to resist high abrasion resistance. Moreover, especially in the excavator bucket or forklift, the horizontal width of each timing node requires the regulation to establish a sufficient number of teeth along the front edge or brim of the excavator body or bucket.

Mount excavator tooth to the holder needs to observe the compromise between two opposite requirements. On the one hand, the method of attachment of the tooth holder must provide sufficient strength to hold the tooth and holder in working together, despite a huge shock in the process of excavation. However, when required or desired replacement tooth pin for mounting the tooth on the holder should be easily removed. Often, especially when operating, removing, or replacing a retaining pin is held in rather primitive conditions. Typically, the locking pin must be removed only with a hammer and punch, making it difficult to overcome the tight locking efforts.

Known splint device for fastening the excavator tooth holder require complicated installation pin or multiple short pins in a horizontal or vertical the actual position in the hole of the tooth and holder. A vertically oriented pin device mainly provide improved access to the pin. Providing more convenient access to knock out retaining pin with a hammer, the vertical position of the locking pin causes it to swing, and on the other hand, the extracted material causes wear on the locking pin, and in some extreme cases, its displacement. In addition, the vertical pin locking devices vertical movement of the excavator body, loading vertically oriented pin device, causes its deterioration, and in some extreme cases, its displacement, allowing the tooth and holder to be accidentally disconnected in the process of excavation.

Horizontal pin devices, though, and provide a solid connection of the excavator tooth and holder, also have certain disadvantages. It should be clear that when you pin the teeth on the front edge or the visor of the excavator body lateral or horizontal gaps between adjacent excavator gear units and/or wear-resistant covers the minimum. Such dense placement complicates the hammering or knocking in a horizontal position the locking pin when installing or removing the excavator tooth. In fact, the known individual in the Elijah aimed at solution installation horizontal positioning pins in excavator teeth, nodes, and proposed special devices that allow this problem.

Known excavator teeth node containing the holder having a main portion and a nose portion located coaxially along the longitudinal centerline of the holder, and specified the main part is made by attaching the holder to the excavator device specified by the nose ends free front end and has an upper and a lower surface located generally respectively above and below the longitudinal axial line of the holder, the upper surface indicated the bow has two sloping sides that are located on opposite sides of the longitudinal centerline and the front from the rear end of the specified bow along its length, and the lower surface of the nasal specified part has two sides, located on opposite sides of the longitudinal axial line of the holder, specified the bow made the recess; excavator tooth on the front and rear end parts, and the rear end part of the tooth is made blind cavity, open to the rear end of the tooth and intended for planting vnee section of the fore part of the holder, and that tooth made a hole in operational combination with a hollow in the specified holder at the location specified tooth and holder in working connection with each other; and locking pin device located in the deepening of the holder and passed through the hole in the specified tooth for detachable fastening of the specified tooth and the holder in a working connection with each other (see DE 4345100 A1, E 02 F 9/28, 1995).

From the specified source of information also known excavator tooth composite excavator timing node containing an elongated wedge-shaped body having a front end portion with a transverse penetrating into the ground edge that is parallel to the edge of the excavating device, when the specified tooth attached thereto, and the rear end part, which made the blind cavity which is open towards the rear end of the body to enable functional connection of the specified tooth holder, which is part of the specified excavator teeth, node, with the specified blind cavity is limited by the two surfaces, the upper of which contains two sloping sides that are located on opposite lateral sides of the longitudinal centerline of the body, and that the tooth are made hole at back the s.

In addition, from the specified source of information known as the holder of a compound of excavator teeth, the node containing elongated body with the main and fore parts arranged coaxially to each other along the longitudinal centerline of the holder, and specified the main part is made by attaching the holder to the excavator device specified by the nose ends free front end and has an upper and a lower surface located generally respectively above and below the longitudinal centerline of the body, the upper surface indicated the bow has two sloping sides that are located on opposite sides of the longitudinal centerline of the body, and the lower surface specified the bow has two sides, located on opposite sides of the longitudinal centerline of the body, and specified in the bow made a dent.

These well-known technical solutions have the above disadvantages.

Thus, there is a need and demand for excavator teeth, the nodes that have improved strength characteristics, providing withstanding extreme loads transmitted to the timing node in the process excavate the collected works, and configuration which apply splint device, devoid of the problems and difficulties associated with previously known horizontal and vertical pin devices.

In view of the foregoing and in accordance with the present invention proposed a composite excavating teeth node containing the holder, excavator tooth and splint device to associate the specified holder and tooth in working connection with each other. Tooth and holder have a special way you have paired with each other. In addition, the connection of the excavator tooth and holder made with such preferential location pin devices, in order to avoid the problems inherent in the above-described vertical and horizontal pin devices, and provide previously unknown advantages.

The holder for the composite timing node according to the present invention contains the main part and the nose mounted coaxially along the longitudinal centerline. The main part of the holder has been designed to provide secure on excavating equipment. According to one aspect of the invention, the nose portion of the holder has upper and lower surfaces located respectively above and below the longitudinal centerline. At least the upper surface of the bow holder is on the e face or hand, United with one another by a rib extending longitudinally forward from the rear end of the bow along its length. The faces or sides, forming the upper surface of the holder, are located on opposite sides of the longitudinal centerline of the holder. Further, the holder is designed with software installation pin devices used for detachable fastening and holding the excavator tooth and holder in working connection with each other. In a preferred embodiment of the invention the bottom surface of the bow holder has two faces or sides, which are also connected to each other share an edge, a longitudinally extending forward from the rear end of the bow holder along its length. Similarly, the upper surface of the face or the bottom surface of the bow holder are located on opposite sides of the longitudinal centerline of the holder.

Excavator excavator tooth of the toothed node according to the present invention has front and rear end parts. At the rear end portion of the tooth is made blind cavity to location in it the greater part of the length of the bow holder. The configuration of the excavator tooth also ensures, together with the configuration of the holder installation pin devices.

Pin lighting is giving for fixing holder and the excavator tooth in operable connection with each other can have many different designs without reducing the amount of protection of the present invention and going beyond it. In one embodiment, the locking pin is preferably of elongated form, providing a longitudinal passage through the hole in the holder and at least partial location in the aligned holes of the excavator tooth. Alternative splint device may be a pin, which partially passes through the aligned holes of the excavator tooth and in the working position in contact in the area between its ends with an open groove made on the outer edge of the holder. In another embodiment, a dental device may be made in the form of a shift lock that is installed in the recess made in the holder, and enters into the recess of the tooth with the possibility of exit. As should be clear to experts, the pin device also has some mechanism or device to prevent accidental longitudinal movement of the locking pin relative to the holder and tooth.

Holder and excavator excavator tooth timing node is constructed preferably with support elements for stabilization timing node in the process of excavation. In the preferred embodiment, each support element to stabilize the tooth and holder includes a generally horizontal and a vertical surface, made on the upper and lower surfaces of the holder and the and the corresponding surfaces of the tooth.

In a preferred embodiment of the invention the two sides forming the top surface on the fore part of the holder are tilted down and have a generally flat shape to enhance the stability of the coupling between the tooth and holder. In addition, two sides of the bottom surface of the bow holder are preferably tilted up and also have a generally flat shape to further enhance the stability of the coupling between the holder and the excavator tooth. To match the design of the tooth, which typically has a generally wedge-shaped, the sides or the top and bottom surfaces inclined in the direction of the free end of the bow holder so that they are positioned relative to each other under the converging angle. To increase strength, durability and rigidity of the holder is made preferably forged.

In the most preferred embodiment of the present invention the nose portion of the holder has a rectangular cross-sectional shape. However, unlike previously known nasal parts of the other holders of the rectangular or generally rectangular cross-sectional shape of the bow in a preferred embodiment of the invention rotated around the longitudinal axial line of the holder at an angle from about 25° to 65° relative to the main hour and holder. In the most preferred embodiment of the invention a rectangular cross-section of the bow holder is rotated at an angle of about 45° relative to the main part of the holder. Alternative distance between the upper and lower General edges connecting sides respectively of the upper and lower surfaces of the holder, may be greater than the total distance between the side edges connecting each of the upper and lower surfaces of the holder located at one or the other lateral side of the longitudinal centerline of the holder. This design feature increases the strength of the bow holder and, therefore, its durability and functionality.

As usual, the excavator tooth of the toothed node has a generally wedge-shaped side profile. The tooth is penetrating into the ground edge that is located transversely at its front end portion to improve penetration into the ground surface and generally parallel to the edge of the excavator body or ladle, with which the tooth is connected. As noted above, the rear end portion of the excavator tooth made blind cavity, open to the rear end portion of the tooth and provides it a sliding fit on the nose of the holder.

Another aspect of the present invention is associated with the configuration of the rear end portion of the tooth, namely the shape of the cavity, providing interface between the tooth and holder. Blind cavity made in the excavator tooth, has upper and lower surfaces located on opposite sides of the longitudinal centerline of the tooth. As should be clear, the cross-sectional shape of the cavity made in the rear end portion of the tooth corresponds to the cross-sectional shape of the bow holder.

In the illustrated example, the upper surface of the tooth cavity is made of two faces or sides, each side is located at an acute angle from about 25° to 65° for penetrating into the ground edge of the tooth. The sides forming the top surface is made in the tooth cavity, placed on opposite sides of the longitudinal centerline of the tooth and have a common edge between them. In a preferred embodiment of the invention the bottom surface of the cavity of the tooth is also made of two faces or sides, each side is located at an acute angle from about 25° to 65° for penetrating into the ground edge of the tooth. Side forming the bottom surface is made in the tooth cavity, placed on opposite sides of the longitudinal centerline of the tooth and have a common edge between them. Excavator tooth is made with a recess for mounting the locking pin device on an axis located generally preferably perpendicular to one side of the upper surface in the tooth hollow cavity.

In a preferred embodiment of the invention the two sides forming the upper surface of the hollow cavity is made in the tooth, have a generally flat shape. In addition, as in other embodiments, each side forming the bottom surface of the hollow cavity of the tooth, also preferably has a flat shape. In this preferred construction is made in the tooth blind cavity in the greater part of its length has a quadrangular cross-sectional shape. Importantly, rectangular, and preferably generally rectangular cross-sectional shape of the cavity is rotated at an angle from about 25° to 65° relative transverse penetrating into the ground edges of the tooth. In the most preferred embodiment of the invention excavator tooth is made by forging, to increase its strength, rigidity and wear resistance in harsh and demanding operating conditions.

In one embodiment of the invention for the installation of certain types of the above-mentioned locking pin fit hole made in the fore part of the holder, and aligned holes in the excavator tooth placed respectively to one another to provide a longitudinal passage through them, and the subsequent retention of the elongated retaining pin in a working connection with tooth and holder. In accordance with another aspect of N. the present invention is made in the bow holder hole is located on an axis, crossing opposite sides of the upper and lower surfaces of the bow holder. According to another aspect of the present invention the recess in the excavator tooth to accommodate at least part of the locking pin of the device is made on an axis located at an angle of between about 25° to 65° with the front cutting edge of the tooth.

In various embodiments of the invention the axis of the locking pin of the device is preferably perpendicular to one side of the upper surface of the bow holder or hollow cavity of the tooth, respectively. This inclined arrangement of the fixing pin device provides several previously unknown advantages. First, the inclined arrangement of the pin device provides ergonomic advantages for the repair and replacement excavator tooth, especially during installation and removal of the locking pin of the device. Such ergonomic advantages are even more obvious on the basis of the location of the bucket or organ on which you want to repair and/or replace excavator tooth. In addition, the inclined arrangement of the locking pin device provides visual control of the correct orientation of the excavator tooth consider is Ino holder during Assembly of the excavator gear site. As should be clear to experts, certain excavator tooth purposefully designed with a specific angle of attack relative to the bucket or grantozajavitelej guns, on which it is mounted. Often excavator tooth is mounted on the ladle wrong, losing, thus, the advantages of its special design. In the present invention the inclined arrangement of the locking pin device provides the desired orientation of the tooth and holder during Assembly, allowing the operator to fully utilize the advantages, specially put into the design of excavator tooth.

As should be clear from the present invention and as described in detail below, the angular arrangement of the elements of the excavator tooth and holder, forming the interface between the latter, significantly changed in comparison with previous designs of excavator tooth, to intentionally make the claimed design differs from the previous level while increasing the strength of the specified pair. The angular location of the parties forming the upper surface of the fore part of the holder and the hollow cavity of the tooth, helps semienclosed effect under free planting tooth on the holder. In addition, the angular location of the parties forming the top over the top hair bow holder and the upper surface of the tooth cavity, increases the surface area of contact (in comparison with the similar area, oriented along the same line with the main part of the holder and the front edge of the tooth) in the coupling between the parts of the gear elements of the site, providing the distribution sent to them in the process of excavation loads over a larger area.

Angular modification of parts of the elements forming the interface between the tooth and holder, leads to the advantageous location of the locking pin devices other than strictly vertical or horizontal orientation. In contrast to the previous configurations, the angular rotation of the parts of interface elements of the present invention allows the locking pin to be tilted relative to the horizontal at an angle from about 25° to 65°that provides the above advantages among others. So, when inclined pin devices recoverable materials, as well as vertical movement or force of the excavator cutting tools normally provided on a vertically oriented pin devices in the process of excavation, will have a significantly less harmful effects on the locking pin device of the present invention. Another advantage of the new design of the present invention with Asano with a significant increase in space for free access to the fixture pin in comparison with the structures of the excavator tooth, in which the locking pin is generally horizontally.

These and many other tasks, objectives and advantages of the present invention will be easily understood from the following detailed description, drawings and appended claims.

Figure 1 shows the excavator teeth node according to the present invention, a top view;

figure 2 is a side view of the excavator of the timing node, depicted in figure 1;

figure 3 is a perspective view of the excavator of the timing node according to the present invention;

figure 4 - the holder of excavator teeth, node, view from above;

figure 5 is a side view in partial section of the holder shown in figure 4;

figure 6 is a section along the line 6-6 figure 5;

figure 7 is a perspective view of the holder depicted in figure 4-6;

on Fig - excavator excavator tooth of the toothed node according to the present invention, a top view;

figure 9 is a side view of the excavator tooth depicted in Fig;

figure 10 is a rear view of the excavator tooth depicted in Fig;

figure 11 is a section along the line 11-11 Fig 1;

on Fig - section along the line 12-12 figure 1;

on Fig - section on the line 13-13 figure 1;

on Fig - section along the line 14-14 1;

Fig 15 is a cross-section on the line 15-15 1;

on Fig - section on the line 16-16 1;

on Fig - section on the line 17-17 figure 1;

on Fig - section, such Fig illustrating al the alternative form of the locking pin device for detachable fastening of the holder and excavating tooth in working connection with each other;

on Fig - section, such Fig illustrating another alternative form of the locking pin device for detachable fastening of the excavator tooth and holder in working connection with each other;

on Fig - view in cross section of the bow holder that contains characteristics of the present invention, illustrating an alternate form of the locking pin device for detachable fastening of the excavator tooth in operable connection with the holder;

on Fig is a view similar to Fig.7, illustrating in perspective the nose portion of the holder shown in Fig and executed in connection with alternative locking pin device depicted in Fig;

on Fig is a longitudinal section of the holder with the alternative form of the locking pin device for detachable fastening of the bow holder and excavating tooth in working connection with each other;

on Fig - view, such Fig illustrating in perspective the nose portion of the holder shown in Fig and made with reference to the alternative form of the locking pin devices;

on Fig enlarged view in cross-section, such Fig illustrating bow holder with impaled on him excavating tooth and another alternatepropertyvalue device for detachable fastening and holding the holder and excavating tooth in operable connection with each other;

on Fig an enlarged side view of the locking pin of the device shown in Fig;

on Fig - sectional view similar to Fig.6, illustrating another alternative cross-sectional shape of the bow holder;

on Fig is another section similar to 6, illustrating another alternative cross-sectional shape of the bow holder;

on Fig - sectional view similar to Fig.6, illustrating another alternative cross-sectional shape of the bow holder;

on Fig - sectional view similar to Fig.6, illustrating another alternative cross-sectional shape of the bow holder;

on Fig - sectional view similar to Fig.6, illustrating another alternative cross-sectional shape of the bow holder;

on Fig is another section similar to 6, illustrating another alternative cross-sectional shape of the bow holder.

Although the present invention can be implemented in many forms, the drawings shown and will hereinafter be disclosed to various preferred embodiments of the present invention and this disclosure should not be construed as limiting the invention individual illustrated and described examples of implementation.

In all the drawings the same elements are denoted by the same digital SS what Lomi.

Figure 1 shows the excavator teeth, node 10, the construction of which covers different principles and different aspects of the present invention. As you can see, excavator teeth, node 10 is a detail of composite construction and includes a holder (or support) 12 and excavator tooth 14 held relative to each other in one position or direction. Shown in the figure 1 example, the locking pin device 16 Rethimno connects the holder 12 and the excavator tooth 14 with each other and holds them in a working connection.

Although figure 1 shows only one excavator teeth node attached to the excavator device 18, for example to the front edge 20 of the excavator bucket or similar element, the specialist will be clear that the typical details excavating device front edge 20 of the bucket in the direction of the capture of soil will be placed with the side gaps between a set of timing nodes are essentially identical timing to the host 10. In addition, the specialist will be understood that in operation the bucket, shovel or other piece of excavating devices, which are attached to the excavator teeth, site 10, to be moved both vertically and horizontally.

As shown in figures 1 to 4, the holder or support 12 has an elongated body with a free end located to continue the Noah centerline 22. The holder or support 12 includes traditional main part 24 and coaxially nose piece 26, protruding from the main portion 24 of the cantilever forward from the front edge or edges 20 excavation device (e.g., bucket) 18. The main part 24 of the holder 12 is configured for attachment to excavating device. On some larger equipment main part 24 of the holder 12 is configured for detachable mounting of, for example, using a conventional wedge-type clamping mechanism (not shown) to the front edge 20 of the shovel or bucket of the excavator device 18. Usually excavator tooth 14 is located longitudinally forward end and around the nose portion 26 of the holder 12. In a preferred form, the holder 12 is formed by forging, which increases its strength and rigidity.

As shown in Fig.3-5, the nose portion 26 of the holder 12 has a protruding forward wedge-shaped, which includes a converging angle of the upper and lower outer surfaces 30 and 40, respectively. The upper and lower surfaces 30 and 40 are generally respectively above and below the longitudinal centerline 22 of the holder 12. In a preferred embodiment of the invention, as shown in figure 4, 5 and 7, the upper and lower outer surfaces 30 and 40 of the holder 12 in its end face 33 is made with each of the supporting elements in the form of recessed areas 32, 42 with therefore, its, that coupled with an end face 33 of the holder 12. Deep areas 32, 42 are located on the surfaces 30, 40 and relative to the longitudinal centerline 22 of the holder 12 is preferably the same. Each in-depth plot 32, 42 forms on the surfaces 30, 40 of the holder 12 stabilizing the surface or space.

Each square sections 32, 42 indented inward relative to the respective beveled surfaces 30, 40 of the holder 12 for the formation of mainly flat horizontal surface 34, 44 located generally parallel to the longitudinal centerline 22 of the holder 12. It should be clear that the vertical distance between the planes, generally horizontal surfaces 34, 44 on the upper and lower surfaces 30, 40 of the holder 12 is set in advance. In addition, each square sections 32, 42 includes a generally vertical stabilizing wall 35, 45, respectively. Surfaces 34, 44 and the walls 35, 45 function as support elements or support surfaces. As will be described below, square surfaces 34, 44 on the upper and lower surfaces 30 and 40, respectively, of the holder 12 provide a better distribution of the load to absorb the excessive vertical loads, usually transmitted to the timing node in the process of excavation, while the vertical stabilizing walls 35, 45 of each camera is lytic areas 32, 42, respectively, provide additional vertical load-bearing surface to facilitate absorption of excessive horizontal loads, which usually also is transmitted to the timing node in the process of excavation.

One of the significant features of the present invention is associated with a unique nose portion 26 of the holder 12. As shown in figure 4, 6 and 7, the upper surface 30 of the holder 12 has two descending down sloping sides or faces 36 and 37 are connected with each other by a common upper edge 38 and extends along the holder 12 forward from the main portion 24. As shown, the sides or faces 36, 37 forming the top surface 30 of the holder 12, are placed on opposite sides of the longitudinal centerline 22 of the holder 12. Total upper edge 38, which connects the two sides 36, 37 are located on the greater part of the length of the holder 12 and generally centrally along its longitudinal centerline 22. In a preferred embodiment of the invention the sides 36, 37 forming the top surface 30 of the holder 12, inclined downwards in the longitudinal direction to the free end of the nose portion 26 of the holder 12.

In a preferred embodiment of the invention, each of the tilted down sides 36, 37 forming the top surface 30 of the holder 12 has a generally flat shape. In this embodiment of the invention each of the sides 36, 37, forming a ve is hnwu surface of the holder 12, inclined at an angle of about 45° to the horizontal plane.

In a preferred embodiment of the invention, as best shown in Fig.6, the bottom surface 40 of the holder 12 has a configuration complementary to the shape of the upper surface 30. That is, the bottom surface 40 of the holder 12 has two upward sloping sides or faces 46 and 47, are connected with each other by a common bottom edge 48 and extending along the holder 12 forward from the main portion 24. As shown, the sides or faces 46, 47, forming the bottom surface 40 of the holder 12, are placed on opposite sides of the longitudinal centerline 22 of the holder 12. Total bottom edge 48, which connects the two sides 46, 47, located in the greater part of the length of the holder 12 generally centrally along its longitudinal centerline 22. In a preferred embodiment of the invention the sides 46, 47 of the lower surface 40 is inclined downward in the longitudinal direction to the free end of the nose portion 26 of the holder 12.

Thus, the two sloping sides 36, 37 of the upper surface 30 of the bow 26 diverge at an angle to each other from the top shared edge 38 located along the bow 26 and two sloping sides 46, 47 of the bottom surface 40 diverge at an angle to each other from the lower General edges 48, located along the bow 26.

In a preferred embodiment, izobreteniya of the sides 46, 47 forming the bottom surface 40 of the holder 12 has a generally flat shape. In this embodiment of the invention each of the sides 46, 47 forming the bottom surface of the holder 12, is inclined at an angle of about 45° to the horizontal plane.

In that embodiment of the invention, where the sides 36, 37 forming the top surface 30, and the sides 46, 47 forming the bottom surface 40 of the holder 12, are in General flat shape, as shown in Fig.6, the nose portion 26 of the holder 12 has a generally rectangular cross-sectional shape on most of its longitudinal length. Since the sides 36, 37 and 46, 47 of the upper and lower surfaces 30 and 40, respectively, converge toward the trailing end face of the holder 12, a rectangular cross-section of the nose portion 26 of the holder 12 increases in a direction from its end face.

In this embodiment, is placed at an angle between sides 36 and 46, forming the upper and lower surfaces 30 and 40, respectively, and are located on one side of the longitudinal centerline 22 of the holder 12 are also connected to each other with a common side edge 39 extending longitudinally forward from the main portion 24 of the holder 12. Similarly, shown in figure 6 embodiment is placed at an angle between a side 37, 47 of the upper and lower surfaces 30 and 40, respectively, located n the other side of the longitudinal centerline 22 of the holder 12, are connected with each other by a common lateral edge 49 extending longitudinally forward from the main portion 24 of the holder 12.

In the example embodiment of the invention, shown in Fig.6, the nose portion 26 of the holder 12 on a larger plot of its length rotated around the axial line 22 at an angle of about 45° relative to the main portion 24 of the holder 12. The vertical distance VD between General upper and lower edges 38 and 48 on the upper and lower surfaces 30 and 40, respectively, much larger than the distance measured across any two opposite sides on the top and bottom surfaces 30, 40 of the holder 12, respectively. Similarly, the horizontal distance HD between the total lateral edges 39 and 49 on the upper and lower surfaces 30 and 40, respectively, much larger than the distance measured across any two opposite sides on the top and bottom surfaces 30 and 40 of the holder 12, respectively.

In the forward portion 26 of the holder 12 is made cavity or depression in the form of holes 50 for accommodating the locking pin device 16. Shown in figure 1-7 example embodiment of the invention, the hole 50 is made through two opposite open ends. As shown in Fig.6, the hole 50 is made along an axis 52 that intersects the opposite side 36, 47 upper and lower surface is 30 and 40, respectively, placed on opposite sides of the longitudinal centerline of the holder 12.

In the depicted embodiment, the axis 52 of the hole 50 is located at an angle of about 45° to the horizontal plane. In the most preferred embodiment of the invention to simplify the manufacture of the holder 12, the axis 52 of the hole 50 is generally perpendicular to at least one of the parties forming the upper and lower surfaces 30, 40 of the holder 12. The specialist will be clear that the size and configuration of the holes 50 are adapted to accommodate an elongated locking pin device 16 serving for detachable connection of the holder 12 and the excavator tooth 14 in a working combination.

When a compound of excavator teeth, node 10 is mounted, excavator tooth 14 is placed forward end along and around the longitudinal section of the forward portion 26 of the holder 12. As shown in figures 1, 2, 8 and 9, excavator tooth 14 has an elongated wedge-shaped organ that is located along the longitudinal centerline 54 and having a transverse penetrating into the ground cutting edge 56 located across the front end portion 57, and a hollow rear mounting end portion 58. During Assembly with the holder 12 penetrating into the ground cutting edge 56 is located generally horizontally and, therefore, generally parallel to the edge 20 (1) excavate the nogo device, to which in the working position attached to the tooth. As will be clear to the expert, hollow mounting end portion 58 provides landing tooth 14 forward end of the holder 12. In a preferred embodiment of the invention, the teeth 14 formed in the forging process, which increases its strength and rigidity.

As shown, the tooth 14 comprises upper and lower outer surfaces 60 and 62 respectively located behind the front cutting edge 56 and extending to the rear end of the tooth 14. Away from the edge 56, the surfaces 60, 62 diverge at an angle to each other. As shown in Fig, 9, 11 and 12, the upper outer surface 60 of the tooth 14 is made with a recess 64 of a special form, located behind the transverse edge 56 (Fig 1) to slow for a lost tooth 14 as a result of its abrasion. As shown in Fig, the cross-sectional shape and the upper surface 60 of the tooth 14 varies considerably depending on the distance from the cutting edge 56 (Fig 1).

As is generally the case in the composite timing nodes, the kind considered here, as shown in figure 10, the end portion 58 of the tooth 14 is a blind cavity 68 that is open towards the rear end of the tooth 14. In a preferred embodiment of the invention, as shown in Fig.9, open towards the rear end of the tooth edge of the cavity 68 has a guide edge, made with internal voltage is Allaudin radius 69 to facilitate the axial direction of the nose portion 26 of the holder 12 with the introduction of it in pair with the tooth 14 or landing in the tooth.

As shown in figures 9 and 10 present in the tooth 14 of the cavity 68 is limited to the upper and lower inner surfaces 70 and 80, respectively, are located ahead from the open rear end of the cavity 68 toward the front edge 56 of the tooth 14 and converging towards each other essentially the same mutual angle on the bow 26 of the holder 12 posted by top and bottom surfaces 30 and 40, respectively. The upper and lower inner surfaces 70, 80 end end wall 67. The upper and lower surfaces 70 and 80 are placed in General respectively above and below the longitudinal centerline 54 of the tooth 14. In a preferred embodiment of the invention the inner upper and lower surfaces 70 and 80, defining a cavity 68 of the tooth 14, also includes a pair of supporting elements in the form of straight sections 72 and 82, respectively, extending backward from the end of the end wall 67 of the cavity 68. Stabilizing sections 72, 82 are placed and are shaped to mate with areas 32, 42, respectively, on the fore part 26 when the holder 12 and tooth 14 are connected to each other in a working combination.

As shown in figures 9, 10, 14 and 15, each roll section 72, 82 protrudes from the upper and lower surfaces 70, 80, respectively inward toward the centerline 54 teeth 14 with the formation of a generally flat horizontal surfaces 74, 84 in which the quality arranged in General parallel to the centerline 54 of the tooth 14. As should be clear, pre-defined vertical distance between the flat generally horizontal surfaces 74, 84 of the upper and lower surfaces 70, 80, respectively, in the cavity 68 of the tooth 14. In addition, each roll section 72, 82 has a generally vertical stabilizing wall 75, 85, respectively.

As will be clear from consideration of this aspect of the present invention, portions 72, 82 of the tooth 14 mate with portions 32, 42 of the bow 26 of the holder 12 for absorption and distribution of excessive vertical loads transmitted usually on the timing node 10 in the process of excavation. In addition, the stabilizing walls 75, 85, respectively, the upper and lower surfaces 70, 80 in the cavity 68 of the tooth 14 aligned in position with the stabilizing walls 35, 45 (5) of the holder 12 for the formation of an additional bearing surface to facilitate the distribution of absorbed limit loads, usually transmitted to the timing node 10 in conventional excavation.

Another important feature of the present invention is associated with a unique configuration of the cavity 68 of the tooth 14. As shown in figure 10, the upper surface 70, a limiting part of the cavity 68 has two descending sides 76 and 77 connected to each other along a common upper edge 78 and extending for the first time the d from the open end of the cavity 68. As shown, the sides 76, 77, defining the upper surface 70 of the cavity 68, placed on opposite sides of the longitudinal centerline 54 of the tooth 14. Total upper edge 78 that connects the two sides 76, 77 upper surface 70 in the cavity 68, is located in the greater part of the length of the cavity 68 and generally centrally relative to the longitudinal centerline 54 of the tooth 14. In a preferred embodiment of the invention the sides 76 and 77 defining the cavity top surface 70, inclined downwards in the longitudinal direction to the end wall 67 of the cavity 68.

In a preferred embodiment of the invention each of the sides 76, 77, forming the upper surface 70 in the cavity 68 of the tooth 14 has a generally flat shape. In this embodiment of the invention each of the sides 76, 77, forming the upper surface 70 in the cavity 68 at an angle of about 45° to the front of the cutting edge 56 of the tooth 14.

In the embodiment of the present invention, is shown in figure 10, the bottom surface 80, the limiting part of the cavity 68 has a configuration complementary to the shape of the upper surface 70 in the cavity 68 of the tooth 14. That is, the bottom surface 80, bounding the cavity 68 has two ascending sides 86 and 87 connected to each other by a common bottom edge 88 extending forward from the open end of the cavity 68 of the tooth 14. As shown, the sides 86, 87, forming the lower surface 0 in the cavity 68, placed on opposite sides of the longitudinal centerline 54 of the tooth 14. The lower the total edge 88, which connects the sides 86 and 87 of the cavity 68, is located in the greater part of the length of the cavity and generally centrally relative to the longitudinal centerline 54 of the tooth 14.

In a preferred embodiment of the present invention, each of the sides 86, 87, forming the bottom surface 80 in the cavity 68 of the tooth 14 has a generally flat shape. In this embodiment of the invention, each side 86, 87, forming the bottom surface 80 in the cavity 68 at an angle of about 45° to the front of the cutting edge 56 of the tooth 14.

In that embodiment of the invention, in which the sides 76, 77, forming the upper surface 70 in the cavity 68 and the sides 86, 87, forming the bottom surface 80 in the cavity 68 have a generally flat shape, as shown in figure 10, the cavity 68 has a General rectangular cross-section for the greater portion of its length. Since the sides 76, 77 upper surface 70 and forming the bottom surface 80 in the cavity 68 of the sides 86, 87 are inclined to each end wall 67, the cross-sectional area of the cavity 68 is reduced in the direction from the rear end portion 58 to the front end portion 57. In addition, in the embodiment of the invention illustrated in figure 10, the cavity 68 is rotated at an angle of about 45° on the front penetrating into the ground cutting edge.

In the example about the westline of the invention, shown in figure 10, placed at an angle to each other of the sides 76 and 86, partially forming in the cavity 68 of the upper and lower surfaces 70 and 80, respectively, and located on one side of the longitudinal centerline 54 teeth 14, similarly connected to each other along a common side edge 79 extending longitudinally forward from the open end of the cavity 68 of the tooth 14. Similarly, shown in figure 10 example placed at an angle to each other side 77 and 87, partially forming in the cavity 68 of the upper and lower surfaces 70 and 80, respectively, and located on the opposite side of the longitudinal centerline 54 teeth 14, are connected to each other along a common side edge 89 that extends forward from the open end of the cavity 68 of the tooth 14.

To work in conjunction with the holder 12 of the excavator tooth 14, in addition, comply with the recess or hole for positioning the longitudinal part of the locking pin device 16. In the example illustrated in Fig, 9, 16 and 17, the tooth 14 perform a pair of aligned through holes 90 and 92. As shown in Fig, the holes 90, 92 are made along the axis 94, which crosses diametrically opposite sides 76 and 87 of the upper and lower surfaces 70 and 80, and passes through the cavity 68 of the tooth 14. In the illustrated example, the axis 94 of the holes 90, 92 in the tooth 14 is located at an angle of about 45° penetrating in the city of the CNTs edge 56 of the tooth 14. Openings 90, 92 in the tooth 14 have the form of providing a longitudinal passage through them locking pin device 16 to provide a detachable connection of the holder 12 and tooth 14 in the working relationship with each other. As will be clear to experts, the longitudinal arrangement of holes 90, 92 in the tooth 14 and the holes 50 in the forward portion 26 of the holder 12 is selected so that the device 16 is held in a fixed position relative to the holder 12 and tooth 14 to prevent accidental longitudinal displacement of the device.

The locking pin device 16 for detachable connection and retention of the holder 12 and tooth 14 in the working relationship with each other can be made in many forms without reducing the amount of protection of the present invention and going beyond it. In one embodiment, the locking pin device 16 can be made according to the type fully described in U.S. patent No. 5765301, issued June 16, 1998, suffice it to say that in the example shown in Fig and 17, the locking pin device 16 skipped along through the hole 50 in the forward portion 26 of the holder 12 and at least partially longitudinally placed in each of the holes 90, 92 of the tooth 14, thereby ensuring that the working connection of the holder 12 and tooth 14 with each other. The locking pin device 16, the image is Agen on Fig and 17, contains an elongated hollow rigid sleeve 95 is inserted in the hole 50 of the bow 26 of the holder 12, and an elongated pin 96, tightly slidable planted into the sleeve 95 and protruding in the axial direction beyond its opposite ends to mate with aligned openings 90, 92 in the tooth 14, thereby Rethimno connecting the holder 12 and tooth 14 and holding them in working connection with each other.

Another example of the locking pin device 16 for fixing and holding of the holder 12 and the tooth in operable connection with each other is shown in Fig. This alternative form of the locking pin fit the overall digital position 116. The elements of this alternative designs that are identical or functionally similar elements described above, the locking pin device 16, indicated hundredths of digital positions in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the fixture 16.

In this example, the device 116 has a known construction and includes an elongated pin node 194, passed through a hole 50 in the forward portion 26 of the holder 12 and the axially protruding beyond the hole. As is known from the prior art, a pinned node 194 typically contains two linked to the s half of the 195 and 197 of the pin, between which otherwise inserted elastic elastomeric body 196. Configuration halves 195 and 197 of the pin along their length is made such that normally prevent axial movement of the pin node 194 in the process of excavation.

Another example of implementation of the arrangements for securing and holding the holder 12 and the tooth in operable connection with each other is shown in Fig. This alternative form of the device indicated in General by the digital position 216. The elements of this alternative designs that are identical or functionally similar elements described above fixture 16, indicated two hundredth digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the fixture 16.

In this example, the device 216 has a known construction and includes an elongated pin 294, passed through a hole 50 in the forward portion 26 of the holder 12 and protruding longitudinally beyond the hole. Especially, the opposite free ends of the pin 294 pass at least partially through the aligned openings 90, 92 of the tooth 14 and are in contact with their perimeter. In this embodiment, the fixture 216 also includes an elastic locking ring 298, preferably placed in the recess 299 suitable form, is made in the forward portion 26 of the holder 2 is preferably at the lower end of the hole 50 and generally concentric with him. As will be clear to experts, when the elongated pin 294 is inserted into the hole, the ring 298 radially expands. After the locking pin 294 is passed through the ring 298, annular groove 296 of the pin 294 will allow the ring to be compressed around the pin in the groove, which will ensure proper fixation of the pin from longitudinal movement relative to the holder 12 and tooth 14.

Another alternative example of the locking pin device for detachable fastening and holding the holder and tooth compound gear site in a working connection with each other is shown in Fig. This alternative example, the locking pin of the device indicated in General by the digital position 316. The elements of this alternative form of the device, which are identical or functionally similar elements described above fixture 16, marked the three hundredth digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the fixture 16.

In this example, the locking pin device 316 has a known construction and includes an elongated pin 394 crossing in the working position of the upper edge 38 on the upper surface 30 of the nose portion 26 of the holder 12. In this example of the invention in excavator tooth 14 on its opposed the s side of the upper surface 60 made a pair of coaxial holes 390 and 392. In addition, in this example of the invention, as shown in Fig, in the forward portion 26 of the holder is made open up the recess 350, crossing the upper edge 38. It is important that the axis 351 of the recess 350 intersects with the longitudinal centerline 22 of the holder 12 in a generally perpendicular. As shown, the opposite ends of the recess 350 extend on the opposite sides 36, 37 of the upper surface 30 and placed on opposite sides of the longitudinal centerline of the holder. As should be clear, the recess 350 is located along the length of the nose portion 26 of the holder 12 so as to participate with coaxial holes 390, 392 (Fig) in the tooth 14 in the retention of the tooth and holder in working connection with each other after the locking pin device 316 is passed through each of these holes.

As should be clear, the sizes of coaxial holes 390, 392 in the tooth 14 and grooves 350 in the holder 12 is selected from the conditions of dense planting in them the pin 394 locking pin device 316, the Locking pin 394 is mostly known in the art oblong slotted configuration, usually having the property of elastic displacement, which in the free state forces the pin 394 to move apart radially at the outside and allows him radially compressed when the sliding passage through the holes 390, 392 and the recess 350. the donkey landing tooth holder holes 390, 392 are mounted coaxially with the recess 350, which allows the locking pin 394 longitudinally to pass through them. As should be clear, after installation of the pin 394 him some length in contact with the recess 350, which prevents longitudinal movement of the tooth relative to the holder. In this example of the invention the recess 350 undergoes only a limited amount of the holder 12, which increases the strength of his bow 26.

Another alternative locking pin device for detachable fastening and holding the holder and tooth compound gear site in a working connection with each other is shown in Fig. This alternative example, the locking pin of the device indicated in General by the digital position 416. The elements of this alternative form of the locking pin devices that are identical or functionally similar elements described above, the locking pin device 16, identified four digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the fixture 16.

In this example, the locking pin device 416 includes pin connector 494 through a hole 490, on one side of the excavator tooth 14, and has the second blind hole or recess 450, made on the side 36 of the upper surface 30 of the holder 12. Pin connector 494 has two half 495 and 497, elastically connected to each other by means of the elastomeric body 499, which is connected with the opposite surfaces of the halves 495 and 497. In the preferred form half 495 and 497 placed longitudinally relative to each other so that in the assembled composite excavator teeth, the node pin device 416 provides longitudinal displacement of the tooth 14 on the forward side of the holder 12.

As shown in Fig, form a blind recess 450 is adapted to accommodate the free end of the pin connector 494. As shown, the housing recess 450 overlooks the side 36 of the upper surface 30 of the holder 12, and the axis 452 of this deepening passes generally perpendicularly in General the flat side 36 of the upper surface 30 of the holder 12. As should be clear, the recess 450 is located in the axial direction in a predetermined position relative to the hole 490 in the tooth 14 after the components of a composite timing node are connected to each other. After the passage of the locking pin device 416 through the hole 490 in the tooth 14 part of its length is located within the recess 450, thereby preventing longitudinal movement of the tooth 14 and the holder 12 relative to each other. In addition, because this done the research Institute of the recess 450 penetrates only partially into the limited volume of the holder 12, provides high strength and stiffness of the bow 26 of the holder 12.

Another alternative locking pin device for detachable fastening and holding the holder and tooth compound gear site in a working connection with each other is shown in Fig. This alternative example, the locking pin of the device indicated in General by the digital position 516. The elements of this alternative form of the locking pin devices that are identical or functionally similar elements described above, the locking pin device 16, identified five digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the fixture 16.

In this example, the locking pin device 516 is basically just a full description of which is disclosed in U.S. patent No. 4611418, issued September 16, 1986, it suffices Here to note that as shown in Fig and 25, the locking pin device 516 has a latch 594 with elastic recall authority. As shown in Fig, the latch 594 installed in the hole or recess 550, executed in the forward portion 26 of the holder 12. In excavating tooth 14 is a corresponding recess or hole 590 to accommodate the free end Phi is Satoru 594. As shown, the recess 550 to accommodate the locking pin device 516 is made along the axis 552, located generally perpendicular to the plane of the top or bottom surfaces of the nose portion 26 of the holder.

As shown in Fig, you can install multiple tabs when their mutual arrangement. When installing multiple locking pin devices 516, similar to that shown in Fig and 25, with their mutual arrangement for detachable fastening of the tooth and holder in working connection with each other may require the placement of tabs 594 at a certain distance from each other along the length of the bow holder 12. As will be clear to experts, the curved surfaces on the guide edge of the hollow cavity 68, made in the tooth 14, will contribute to the compression of the elastic latch 594 in the Assembly process of the tooth holder.

On Fig shown another form of holder 12 containing characteristics of the present invention. This alternative form of holder indicated generally by the digital position 612. The elements of this alternative form of holder, which are identical or functionally similar elements described above, the holder 12, marked the six hundredth digital positions, in which the last two numbers coincide with the numbers of the positions of the respective identical alenaloving elements of the holder 12.

In this example embodiment of the invention the holder 612 with the axial line 622 is coaxial to each other 624 main and nose 626 parts. Like holder 12 holder 612 is made mainly forging to increase its wear resistance and, therefore, durability. As noted above, the nose portion 626 of the holder 612 is elongated in the axial direction of the wedge-shaped with upper and lower inclined surfaces 630 and 640, respectively, converging towards the free end of the nose portion 626. As shown, the upper and lower surfaces 630 and 640 are placed respectively above and below the longitudinal centerline 622.

The upper surface 630 contains two faces or sides 636 and 637, extending forward from the main part 624 holder 612 placed on opposite sides of the longitudinal centerline 622 and adjoin each other along a common upper edge 638. Total upper edge 638 is located in the greater part of the length of the bow 626 holder 612 and generally centrally along its longitudinal axial line 622.

In this example embodiment of the invention, each side 636, 637, forming the upper surface 630 of the holder 612 has a generally flat shape. In addition, in this example, the side 636, 637, forming the upper surface 630 of the holder 612, each inclined at an angle of about 35° horizontally to the plane.

Presented at Fig sample holder bottom surface 640 of the holder 612 has a configuration complementary to the upper surface 630. That is, the lower surface 640 of the bow 626 holder 612 has two sides 646, 647, adjoin each other along a common bottom edge 648 and located on opposite sides of the longitudinal centerline 622 holder 612. Two lower side 646, 647 also extend forward from the main part 624 holder 612 in the direction of its free end. The total edge 648, uniting the two sides 646, 647, forming the bottom surface 640, is located in the greater part of the length of the nose portion 626 of the holder and generally centrally relative to the longitudinal axial line 622.

In this illustrated embodiment of the invention two sides 646, 647, forming the lower surface 640 of the holder 612 are each generally flat shape. In addition, in this embodiment of the invention the side 646, 647, forming the lower surface 640 of the bow holder 612, each inclined at an angle of about 35° to the horizontal plane.

In the exemplary embodiment of the invention shown in Fig, angled on one side of the longitudinal centerline 622 holder 612 hand 636 and 646, partially forming the upper and lower surfaces 630 and 640, respectively, similarly connected to each other common sides of the m-edge 639, located longitudinally ahead from the main part 624 holder 612. Similarly, in the example of the invention shown in Fig, angled and on the opposite side of the longitudinal centerline 622 holder 612 hand 637 and 647, partially forming the upper and lower surfaces 630 and 640, respectively, are connected to each other along a common side edge 649 located longitudinally ahead from the main part 624 holder 612.

Generally flat configuration parties 636, 637 and 646, 647 upper and lower surfaces 630 and 640, respectively, gives the cross-section of the bow 626 holder 612 in General rectangular shape, the area of which increases in the direction from the free front end of the bow to the back. Suffice it to note that in the pictured Fig example of the invention, the nose portion 626 of the holder 612 on a larger plot of its length rotated relative to the main part 624 holder 612.

In the bow 626 holder 612 also performed facing in the opposite side of the through hole 650 to accommodate a suitable clamp (not shown)used to secure and hold the holder 612 and tooth 14 in operable connection with each other. As shown in Fig, hole 650 is made along the axis 652, which may be located generally perpendicular to at least one of the sides 36, 637 or 646, 647 upper and lower surfaces, respectively, to facilitate the execution of the hole 650. It is important that the opposite ends of the openings 650 overlook the diametrically opposite side, 636, 647, respectively, the upper and lower surfaces 630 and 640 bow 626 holder 612.

Fig illustrates another example of the holder 12 containing characteristics of the present invention. This alternative form of holder indicated generally by the digital position 712. The elements of this alternative form of holder, which are identical or functionally similar elements described above, the holder 12, identified seven hundredth digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the holder 12.

In this example embodiment of the invention the holder 712 with the axial line 722 is coaxial to each other 724 main and nose 726 part. Like holder 12 holder 712 is made mainly forging to increase its wear resistance and, therefore, the expected durability. As noted above, the fore part 726 holder 712 has an elongated wedge-shaped with upper and lower inclined surfaces 730 and 740, respectively, converging towards the free end of the bow 726. As shown, the upper and lower surfaces 730 and 740 size is received, respectively, above and below the longitudinal centerline 722.

The top surface 730 contains two sides 736 and 737, extending forward from the main part 724 holder 712, placed on opposite sides of the longitudinal centerline 722 and adjoin each other along a common upper edge 738. Total upper edge 738 is located in the greater part of the length of the bow 726 holder 712 and generally centrally along its longitudinal axial line 722.

In this example embodiment of the invention, each side 736, 737, forming the upper surface 730 of the holder 712 has a generally flat shape. In addition, in this example, the side 736, 737, forming the upper surface 730 of the holder 712, each inclined at an angle of about 45° to the horizontal plane.

Presented at Fig sample holder bottom surface 740 of the holder 712 has the configuration similar to the shape of the upper surface 730. That is, the bottom surface 740 bow 726 holder 712 has two sides 746, 747, adjoin each other along a common bottom edge 748 and located on opposite sides of the longitudinal centerline 722 holder 712. Two lower side 746, 747 also extend forward from the main part 724 holder 712 in the direction of its free end. The total edge 748, uniting the two sides 746, 747, forming the bottom surface 740, located in the greater part of the length of the osovaya part 726 holder 712 and generally centrally relative to the longitudinal centerline 722.

In this illustrated embodiment of the invention, each side 746, 747, forming the bottom surface 740 of the holder 712 has a generally flat shape. However, the feature of this variant of the invention is that the parties 746, 747, forming the bottom surface 740 of the bow holder 712, inclined to the horizontal plane at an angle different from the corresponding angle of the inclined arrangement of the parties, 736, 737, forming the upper surface 730 of the bow 726 holder 712. In the exemplary embodiment of the invention shown in Fig, hand 746, 747 bottom surface 740 bow 726 holder 712 each inclined to the horizontal plane at an angle of about 35°. As will be clear to experts, the angular location of the parties, 736, 737, 746 and 747, forming respectively the top and bottom surfaces 730, 740 bow 726 holder 712, may, if desired, be reversed. That is, the side 736, 737 top surface 730 can be positioned at an angle of 35° to a horizontal plane, and the sides 746, 747 bottom surface 740 bow 726 holder 712 to incline to the horizontal plane at an angle of 45° or more without reducing the scope of protection of the present invention and not going beyond it.

In this example embodiment of the invention placed at an angle on one side of the longitudinal centerline 722 holder 712 Stour who were 736 and 746, partially forming the upper and lower surfaces 730 and 740, respectively, are also connected to each other common side edge 739 located longitudinally ahead from the main part 724 holder 712. Similarly, in the example of the invention shown in Fig, angled and on the opposite side of the longitudinal centerline 722 holder 712 side of the 737 and 747, partially forming the upper and lower surfaces 730 and 740, respectively, are connected to each other along a common side edge 749 located longitudinally ahead from the main part 724 holder 712.

Generally flat configuration parties 736, 737, 746, 747 upper and lower surfaces 730 and 740, respectively, gives the cross-section of the bow 726 holder 712 in General rectangular shape, the area of which increases in a direction from the front end of the bow. Suffice it to note that in the pictured Fig example of the invention, the nose portion 726 holder 712 on a larger plot of its length rotated relative to the main part 724 holder 712.

In the bow 726 holder 712 is also made opening at its opposite side through hole 750 for placement of retainer (not shown)connecting the holder 712 with the excavator tooth of corresponding form. As shown in Fig, hole 750 is made along the axis 752, which is the generally perpendicular to at least one of the parties 736, 737 or 746, 747 upper and lower surfaces, respectively, to facilitate the execution holes 750. It is important that the opposite ends of the holes 750 go on diametrically opposite sides 736, 747, respectively, the upper and lower surfaces 730,740 bow 726 holder 712.

Fig illustrates another exemplary embodiment of the holder containing the characteristics of the present invention. The alternative holder indicated generally by the digital position 812. Shown in Fig execution of the invention is basically similar to the above option in accordance with Fig except that the parties forming the top and bottom of the bow holder is tilted in the latter case to a horizontal plane at an angle in the range from about 55° to 65°.

Another exemplary embodiment of the holder according to the present invention shown in Fig. This alternative form of holder indicated generally by the digital position 912. The elements of this alternative form of holder, which are identical or functionally similar elements described above, the holder 12, indicated debatesammy digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the holder 12.

In this example embodiment of the invention der the motor 912 with the axial line 922 is coaxial to each other 924 main and nose 926 part. Like holder 12 holder 912 is made mainly forging to increase its wear resistance and, therefore, durability. Bow 926 holder 912 has an elongated wedge-shaped with upper and lower inclined surfaces 930 and 940, respectively, converging towards the free end of the bow 926. As shown, the upper and lower surfaces 930 and 940 are placed respectively above and below the longitudinal centerline 922.

The top surface 930 contains two sides of the 936 and 937, extending forward from the main part 924 holder 912, placed on opposite sides of the longitudinal centerline 922 and adjoin each other along a common upper edge 938. Total upper edge 938 is located at greater length the bow 926 holder 912 and generally centrally along its longitudinal axial line 922.

In this example embodiment of the invention, each side 936, 937, forming the top surface 930 holder 912 has a generally flat shape. In addition, in this example, the side 936, 937, forming the top surface 930 holder 912, each inclined at an angle of about 25° to the horizontal plane.

In the pictured Fig sample holder bottom surface 940 holder 912 has two sides 946, 947, adjoin each other along a common bottom edge 948 and u is defined on opposite sides of the longitudinal centerline 922 holder 912. Two lower hand 946, 947 also extend forward from the main part 924 holder 912 in the direction of its free end. The total edge 948, uniting the two sides 946, 947, forming the bottom surface 940, located in the greater part of the length of the bow 926 holder 912 and generally centrally relative to the longitudinal axial line 922.

In this illustrated embodiment of the invention each party 946, 947, forming the bottom surface 940 holder 912 has a generally flat shape. In addition, in this embodiment of the invention hand 946, 947, forming the bottom surface 940 of the bow holder 912, each inclined to the horizontal plane at an angle of about 45°.

In this example embodiment of the invention placed at an angle on one side of the longitudinal centerline 922 holder 912 hand 936 and 946, partially forming the upper and lower surfaces 930 and 940, respectively, are also connected to each other in a generally vertical side surface 939 located longitudinally ahead from the main part 924 holder 912. Similarly, in the example of the invention shown in Fig, angled and on the opposite side of the longitudinal centerline 922 holder 912 side 937 and 947 of the upper and lower surfaces 930 and 940, respectively, are connected to each other in a generally vertical side surface is Yu 949, located longitudinally ahead from the main part 924 holder 912.

In the bow 926 holder 912 also performed facing in the opposite side of the through hole 950 to accommodate a suitable clamp (not shown)used to secure and hold the holder 912 and excavating tooth in operable connection with each other. As shown in Fig, hole 950 is made along the axis 952, which is generally perpendicular to at least one of the parties 936, 937 or 946, 947 upper and lower surfaces 930 or 940, respectively, to facilitate execution of the openings 950.

The following example run of the holder of the present invention shown in Fig. This alternative form of holder is particularly useful when used in loading the machine, indicated generally by the digital position 1012. The elements of this alternative form of holder, which are identical or functionally similar elements described above, the holder 12, indicated thousand digital positions, in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the holder 12.

In this example embodiment of the invention the holder 1012 with the axial line 1022 is coaxial to each other 1024 main and fore part 1026. The fore part 1026 holder 1012 has an elongated wedge-shaped Fort is near the upper and lower inclined surfaces 1030 and 1040, respectively, converging in the direction of the free end of the nose part 1026. As shown, the upper and lower surface 1030 and 1040 are placed respectively above and below the longitudinal centerline 1022.

The upper surface 1030 contains two faces or sides 1036 and 1037, extending forward from the main part 1024 holder 1012, placed on opposite sides of the longitudinal centerline 1022 and adjoin each other along a common upper edge 1038. Total upper edge 1038 is located in the greater part of the length of the bow 1026 holder 1012 and generally centrally along its longitudinal axial line 1022.

In this example embodiment of the invention, each side 1036, 1037, forming the upper surface 1030 holder 1012 has a generally flat shape. In addition, in this example of the invention the side 1036, 1037, forming the upper surface 1030 holder 1012, each inclined at an angle of between about 35° up to about 55° to the horizontal plane.

In the illustrated Fig sample holder bottom surface 1040 of the holder 1012 has two sides 1046, 1047, connected to each other by a common bottom edge 1048 and located on opposite sides of the longitudinal centerline holder 1022 1012. Two lower hand 1046, 1047 also extend forward from the main part 1024 holder 1012 in the direction of its free is the rates. The total edge 1048, uniting the two sides 1046, 1047, forming the bottom surface 1040 is located in the greater part of the length of the bow 1026 holder 1012 and generally centrally relative to the longitudinal centerline 1022.

In this illustrated embodiment of the invention two sides 1046, 1047, forming the bottom surface 1040 of the holder 1012, have a generally flat shape. In addition, in this embodiment of the invention the side 1046, 1047, forming the bottom surface 1040 of the bow holder 1012, each inclined downward to form with the horizontal plane of the adjacent angle of about 5-15°.

In this exemplary embodiment of the invention placed at an angle on one side of the longitudinal centerline holder 1022 1012 hand 1036 and 1046, partially forming the upper and lower surface 1030 and 1040, respectively, are also connected to each other common side edge 1039 located longitudinally ahead from the main part 1024 holder 1012. Similarly, in the example of the invention shown in Fig, angled and on the opposite side from the longitudinal axial line of the holder 1022 1012 hand 1047 1037 and the upper and lower surfaces 1030 and 1040, respectively, are connected to each other along a common side edge 1049 located longitudinally ahead from the main part 1024 holder 1012.

In the fore part 1026 holder 1012 also performed the opening at its opposite side through hole 1050 to accommodate a suitable clamp (not shown), used to secure and hold the holder 1012 and excavating tooth in operable connection with each other. As shown in Fig, hole 1050 is executed on the axis 1052, which is generally perpendicular to at least one of the parties 1036, 1037 upper surface 1030 to facilitate execution holes 1050.

Another exemplary embodiment of the holder according to the present invention shown in Fig. This alternative form of holder is particularly useful when used in loading the machine, indicated generally by the digital position 1112. The elements of this alternative form of holder, which are identical or functionally similar elements described above, the holder 12 is denoted by a thousand hundredths of digital positions in which the last two numbers coincide with the numbers of positions corresponding to identical or similar elements of the holder 12.

In this example embodiment of the invention the holder 1112 with the axial line 1122 is coaxial to each other 1124 main and nose 1126 parts. Bow 1126 holder 1112 has an elongated wedge-shaped with upper and lower inclined surfaces 1130 and 1140, respectively, converging towards the free end of the bow 1126. As shown, the upper and lower surface 1130 and 1140 are placed respectively above and below the longitudinal centerline 1122.

The upper surface is of 1130 contains two faces or sides 1136 and 1137, extending forward from the main part 1124 holder 1112 placed on opposite sides of the longitudinal centerline 1122 and adjoin each other along a common upper edge 1138. Total upper edge is located at 1138 greater part of the length of the bow 1126 holder 1112 and generally centrally along its longitudinal axial line 1122.

In this example embodiment of the invention, each side 1136, 1137, forming the top surface 1130 of the holder 1112 has a generally flat shape. In addition, in this example of the invention the side 1136, 1137, forming the top surface 1130 of the holder 1112, each inclined at an angle of between about 35° up to about 55° to the horizontal plane.

In the illustrated Fig sample holder bottom surface 1140 holder 1112 has a generally flat side 1146 located on different sides of the longitudinal centerline 1122 holder 1112, generally at right angles to it and generally parallel to the horizontal plane. Bottom 1146 extends forward from the main part 1124 holder 1112 in the direction of its free end.

In this embodiment of the invention curved bottom side 1136, partially forming the top surface 1130, connected with the bottom surface 1140 total lateral edge 1139 located longitudinally ahead of the main part 1124 holds the body 1112. Similarly, in the example of the invention shown in Fig, curved bottom side 1137, partially forming the top surface 1130, connected with the bottom surface 1140 total lateral edge 1149 located longitudinally ahead of the main part 1124 holder 1112.

In the bow 1126 holder 1112 also performed facing different sides of the through hole 1150 to accommodate a suitable clamp (not shown)used to secure and hold the holder 1112 and excavating tooth in operable connection with each other. As shown in Fig, hole 1150 performed along the axis 1152, which is generally perpendicular to at least one of the parties 1136, 1137 top surface 1130 to simplify execution holes 1150.

Although it is not specifically shown, for professionals it should be clear that the opposite sides or the top or bottom surfaces of the holder does not necessarily have to be located under the same angle to each other or in General to the horizontal plane. There may be some variations in the angular position of the opposite sides or the top or bottom surfaces of the holder without reducing the amount of protection of the present invention and going beyond it.

As will be clear to experts, to improve the connection between the tooth and holder form operacneho section of the bow holder and is made in the tooth hollow cavity will generally correspond with each other. Therefore, if the nose piece holder has a cross-sectional shape similar to that shown in Fig, blind cavity in the rear end portion of the tooth will have a similar cross-sectional shape, which will improve the connection between these elements. Similarly, if the nose piece holder has a cross-sectional shape, similar to that shown in Fig, dull tooth cavity, open at its rear end, will have a corresponding cross-sectional shape.

In the present invention has several distinctive features that were not previously known devices of the prior art. First, in the present invention the cross-sectional area of the nasal part of the holder may be obtained from the same amount of material as in the previously known comparable holders, but with increasing strength and stiffness. Therefore, although neither the intensity nor the weight of the holder does not increase its strength and stiffness increase. Due to rotation of the configuration of the cross section of the bow holder relative to the main part provides a substantial increase in the thickness of the material both in vertical and in horizontal directions, so the holder can withstand much greater loads.

As should be clear, when technology is the manufacture of the holder it is possible to provide different angular orientation of the parties, forming upper and lower surfaces of the holder, while increasing strength and durability in comparison with the cross-section shapes used in known composite timing node. Thus, the design of the cross-section of the connection between the tooth and the holder of a composite timing node may be designed specifically to match the expected vertical or horizontal load increases associated with excavation work authority.

Secondly, in the present invention the angular position of elements of the excavator tooth and holder that connect the latter allows self-centering on the holder relatively freely set tooth. In addition, elements of the tooth and holder in the composite timing node is significantly altered in comparison with previous constructions composite excavating tooth that part of the elements of the present invention to make a deliberately different from the prior art. So turn the bow holder relative to the main part, providing the above operational advantages, makes it possible, moreover, to distinguish the holder of the present invention from all other previously known constructions. Similarly, the beveled shape of the hollow cavity in the rear end portion of excavat REGO tooth according to the present invention distinguishes it from all other.

In addition, as should be clear to the experts, as implemented in the present invention the inclined arrangement of the locking pin device provides increased advantages over vertically or horizontally mounted locking pin devices. As should be clear, the location of the axis of the hole for mounting and fastening the locking pin generally perpendicular to the opposite sides of the inclined upper and lower surfaces of the holder simplifies the manufacture of the holder. Moreover, the inclined arrangement of the locking pin provides the best access to it in the repair and/or replacement of excavator tooth. Further, in comparison to previously known locking pin devices, slanted locking pin of the present invention vykapyvaya materials, as well as vertical and horizontal movement of the excavator timing node and the resulting forces have significantly less impact. Additionally, the inclined arrangement of the locking pin device provides ergonomic advantages for the repair or replacement of the excavation site. These ergonomic benefits of more fully implemented in the scoop or loading equipment with the lower vertical position. In addition, the inclined arrangement is of the locking pin of the device facilitates the Assembly and the correct orientation of the excavator tooth relative to the holder, allowing the operator to fully take advantage of the structural characteristics of such excavation teeth.

From the above it follows that can be implemented numerous modifications and variations without departing from the true meaning and boundaries of the new ideas of the present invention. It is clear that this description is intended to present examples of the present invention and does not limit its individual variants illustrated. This description is applied to cover by the claims all such modifications and significant variations within the scope of the claims.

1. Excavator teeth, the node containing the holder (12)having a main portion (24) and a front part (26)located coaxially along the longitudinal centerline (22) of the holder (12), and specified the main part (24) is arranged to attach the holder (12) to the excavator device (18), the aforementioned front part (26) ends with a free front end and has upper and lower surfaces (30, 40)located in General respectively above and below the longitudinal centerline (22) of the holder (12)the upper surface (30) of the said nose part (26) has two sloping sides (36, 37), located on opposite sides of the longitudinal centerline (22) and the front from the back is the rates specified the bow (26) along its length, each sloping side of the specified upper surface is at an angle 25-65° to a horizontal plane, and the lower surface (40) of the said nose part (26) has two sides (46, 47), located on opposite sides of the longitudinal centerline (22) of the holder (12), specified in the fore part (26) is made a recess (50)facing one of the inclined sides (36, 37) of the said top surface (30) of the bow (26) the holder (12) and located on an axis (52), crossing the opposite side of the upper and lower surfaces specified the bow (26) at an angle of 30-60° to a horizontal plane; excavator tooth (14) from the front (57) and rear (58) integral parts, and the rear end portion (58) of the tooth (14) performed a blind cavity (68), open to the rear end of the tooth (14) and intended for planting in her section of the fore part (26) of the holder (12), and in the specified tooth made a hole (90, 92), located in a working combination with an inclined recess (50) in that the holder (12) at the location specified tooth (14) and the holder (12) in working connection with each other; and locking pin device (16)located in the recess (50) of the holder (12) and at least partially passed through the hole (90, 92) specified in the tooth for detachable fastening of the specified tooth and the holder (12) in working connection with each other.

2. Excavator teeth node according to claim 1, characterized in that each sloping side (36, 37) of the upper surface (30) of the holder (12) and/or each sloping side (46, 47) bottom surface (40) of the holder (12) has a flat shape.

3. Excavator teeth node according to claim 1 or 2, characterized in that the axis (52) of the recess (50) in that the holder (12) is perpendicular to one of the inclined sides (36,37) the upper surface (30) of the said holder.

4. Excavator teeth node according to any one of claims 1 to 3, characterized in that the recess in the fore part (26) of the holder (12) is made in the form of holes (50), opposite ends of which extend on opposite sloping sides (36, 47, 37, 46) of the upper and lower surfaces (30, 40) nose part (26) of the holder (12).

5. Excavator teeth node according to any one of claims 1 to 4, characterized in that the axis (52) of the recess (50) in that the holder (12) is perpendicular to one of the inclined sides (46, 47) bottom surface (40) of the holder (12).

6. Excavator teeth node according to claim 4 or 5, characterized in that on the lower end of the hole (50)facing inclined side (46, 47) of the lower surface of the fore part (26) of the holder, intersecting with the axis (52) of said hole (50)of the recess (299), located in a the m concentric with the specified axis (52).

7. Excavator teeth node according to any one of claims 1 to 6, characterized in that each sloping side (46, 47) bottom surface (40) of the holder (12) is tapered 25-65° to the horizontal plane.

8. Excavator teeth node according to any one of claims 1 to 7, characterized in that the upper and lower surfaces (30, 40) at an end face (33) of the bow (26) the holder (12) and the corresponding surface (70, 80) of the tooth (14) is made with the supporting elements(32, 35, 42; 72, 74, 82, 84; 85) to stabilize these holder (12) and a tooth (14) when the specified excavator timing node.

9. Excavator teeth node according to any one of claims 1 to 8, characterized in that the excavator tooth (14) is penetrating into the ground edge (56), located across the front end portion (57) of the tooth and parallel to the edge (20) of the excavator device (18)when the specified tooth (14) attached thereto, and a blind cavity (68) in the specified tooth (14) is limited to the upper and lower surfaces (70, 80), which are generally respectively above and below the longitudinal centerline centerline (54) of the tooth and each have two sloping sides(76, 77, 86, 87), each sloping side (76, 77) upper surface (70) of the said hollow cavity (68) is located at an acute angle 25-65° for penetrating into the ground edge (56)and side (76, 77, 86, 87) of the said top and igna surfaces (70, 80) of the said hollow cavity (68) are located on opposite sides of the longitudinal centerline (54) of the tooth, in which the recess (90, 92), located along the axis (94), located at an angle of 30-60° for penetrating into the ground edge (56) and intersecting with the opposite sides of these upper and lower surfaces (76, 77, 86, 87) of the said cavity (68).

10. Excavator teeth node according to claim 9, characterized in that the upper and lower surfaces (70, 80) of the said cavity (68), completed within the specified tooth (14)converge to each other in the direction of the free end (57) of the tooth.

11. Excavator teeth node according to claim 9 or 10, characterized in that the sloping sides (76, 77) of the said upper surface (70) of the cavity (68), completed within the specified tooth (14), and/or sloping sides (86, 87) of the said lower surface (80) of the cavity (68), completed within the specified tooth (14), have a flat shape.

12. Excavator teeth node according to any one of p-11, characterized in that the axis (94) of the specified deepening (90, 92) in the specified tooth (14) perpendicular to one of the inclined sides (76, 77) upper surface (70) of the cavity (68), completed within the specified tooth (14).

13. Excavator teeth node according to any one of p-12, characterized in that the sloping sides (76, 77, 86, 87) of the said upper and lower surfaces (70, 80) is made in the decree is " a tooth (14) of the cavity (68), located on the same side of the longitudinal centerline (54) of the tooth (14) connected by a common edge (79, 89), located in front of the rear end of the tooth (14) along its length.

14. Excavator teeth node according to any one of PP-13, characterized in that the holder (12) and a tooth (14) each made with the respective support elements(32, 42, 72, 74, 75, 82, 84, 85) to stabilize these tooth (14) and the holder (12) for the specified excavator gear unit (10).

15. Excavator teeth node according to any one of claims 1 to 14, characterized in that the front part (26) of the holder (12) has a rectangular cross-sectional shape along its length to increase the strength and rigidity of the holder (12).

16. Excavator teeth node according to any one of claims 1 to 15, characterized in that the cross-sectional area of the nasal part (26) of the holder (12) increases in the direction from its free front end to the rear.

17. Excavator teeth node according to any one of claims 1 to 16, characterized in that the front part (26) of the holder (12) is made with four sloping sides(36, 37, 46, 47), with two sloping sides (36, 37) of the said top surface (30) of the bow (26) the holder (12) are connected to each other share an edge (38), located along the holder (12), and DV is sloped sides (46, 47) the bottom surface of the nose part (26) of the holder (12) are connected to each other share an edge (48)located along the holder (12).

18. Excavator teeth node according to any one of claims 1 to 17, characterized in that the sloping sides (36, 46; 37, 47) of the upper and lower surfaces (30, 40) of the nasal part of the holder (12)located on the same side of the longitudinal centerline (22) of the holder (12), connected to each other by common edges (39, 49).

19. Excavator teeth node according to any one of claims 1 to 18, characterized in that the sealed cavity (68) of the tooth (14) is made with four sloping sides(76, 77, 86, 87), with two sloping sides (76, 77) upper surface (70) of the hollow cavity (68) are connected along the tooth (14) total edge (78), and two sloping sides (86, 87) lower surface (80) of the hollow cavity (68) are connected to other points along the tooth (14) total edge (88).

20. Excavator teeth node according to any one of claims 1 to 19, characterized in that the sloping sides (76, 86; 77, 87) of the upper and lower surfaces (70, 80) hollow cavity (68), completed within the specified tooth (14)located on the same side of the longitudinal centerline (54) of the tooth (14), are connected by common edges (79, 89).

21. Excavator tooth (14) the compound excavator gear unit (10)containing oblong the second wedge-shaped body, having the front end part (57) with transverse penetrating into the ground edge (56)that is parallel to the edge (20) of the excavator device (18)when the specified tooth (14) attached thereto, and the rear end portion (58), which made the blind cavity (68), open towards the rear end of the body to enable functional connection of the specified tooth (14) with a holder (12), which is part of the specified excavator gear unit (10)with the specified blind cavity (68) is limited by the two surfaces (70, 80), upper (70) of which contains two sloping sides (76, 77), located at an acute angle 25-65° for penetrating into the ground edge (56) and on opposite sides of the longitudinal centerline (54) a specified authority, as specified in the tooth (14) axis (94)crossing the opposite side (76, 87) of the said upper and lower surfaces (70, 80) of the said cavity (68) and located at an angle of 30-60° penetrating into the ground edge (56) of the said elongated wedge-shaped body, made a hole (90, 92)extending at least one of the inclined sides (76, 77) upper surface (70) of the said cavity (68).

22. Excavator tooth according to item 21, wherein the upper and lower surfaces (70, 80) of the said cavity (68) converge at an angle to each other towards the front to Navoi part (57) of the tooth (14).

23. Excavator tooth according to item 21 or 22, characterized in that the lower surface (80) of the said hollow cavity (68) contains two sloping sides (86, 87), located at an acute angle 25-65° for penetrating into the ground edge (56) and on opposite sides of the longitudinal centerline (54) of the specified entity.

24. Excavator tooth according to any one of p-23, characterized in that the sloping sides (76, 77) of the said upper surface (70), the bounding of the said hollow cavity (68), and/or sloping sides (86, 87) of the said lower surface (80), limiting the portion of the hollow cavity (68), have a flat shape.

25. Excavator tooth according to any one of p-24, characterized in that the specified tooth (14) made a pair of coaxial holes (90, 92)located on the axis (94)perpendicular to one of these inclined sides (76, 77) upper surface (70) of the said hollow cavity (68), completed within the specified oblong body.

26. Excavator tooth according to any one of p-25, characterized in that the sloping sides (76, 77; 86, 87) of the said upper and lower surfaces (70, 80) of the said cavity (68) are connected to respective common edges (78, 79, 88, 89) with a quadrangular cross-sectional shape of the cavity (68), completed within the specified tooth (14).

27. Excavator tooth according to any one of p-26, characterized in that the blank is alost (68) is open towards the rear end of the body and has a quadrangular cross-sectional shape along its length, moreover, the area of this cross section decreases in a direction from the rear end portion (58) of the specified body to the front end portion (57).

28. Excavator tooth according to any one of p-27, characterized in that the upper and lower surfaces (70, 80) of the said hollow cavity (68) is performed with the support elements (72, 82) for stabilization of the specified tooth (14) on the holder (12) in the process.

29. The holder (12) the compound excavator gear unit (10)containing an elongated body with a core (24) and nasal (26) parts arranged coaxially to each other along the longitudinal centerline (22) of the holder (12), and specified the main part (24) is arranged to attach the holder (12) to the excavator device (18), the aforementioned front part (26) ends with a free front end and has upper and lower surfaces (30, 40)located in General respectively above and below the longitudinal centerline (22) the specified body, the upper surface (30) of the said nose part (26) has two sloping sides (36, 37), located on opposite sides of the longitudinal centerline (22) of the body, and the lower surface (40) of the said nose part (26) has two sides (46, 47), located on opposite sides of the longitudinal centerline (22) of the body, each sloping the side specified upper surface is at an angle 25-65° to the horizontal plane, specified in the fore part (26) is made a recess (50)facing at least one inclined side (36, 37) of the said top surface (30) the fore part of the body and located along the axis (52)at an angle of 30-60° to the horizontal plane.

30. The holder (12) according to clause 29, wherein the upper and lower surfaces (30, 40) of the body inclined downwards in the direction of the free end (33) of the bow (26) of the holder (12).

31. The holder (12) in clause 29 or 30, characterized in that the sides (46, 47) bottom surface (40) of the bow (26) of the said elongated body are angled 25-65° to the horizontal plane.

32. The holder (12) according to any one of p-31, characterized in that each sloping side (36, 37) of the upper surface (30) of the body and/or each sloping side (46, 47) bottom surface (40) of the body has a flat shape.

33. The holder (12) according to any one of p-32, characterized in that the recess in the fore part (26) of the holder (12) is made in the form of a through hole (50)facing the opposite sloping sides (36, 37; 46, 47) of the upper and lower surfaces (30,40) the fore part of the elongated body.

34. The holder (12) according to any one of p-33, characterized in that the axis (52) of said hole (50) is located in perpe dicosmo one of these inclined sides (36, 37) of the upper surface of the body to facilitate the manufacture of the holder (12).

35. The holder (12) according to any one of p-34, characterized in that at intersecting with the axis (52) of said hole (50) of the inclined side (46, 47) bottom surface (40) of the bow is made a recess (299), located concentric with the specified axis (52).

36. The holder (12) according to any one of p-35, characterized in that the sloping sides (36, 37) of the upper surface (30) of the bow (26) of the body are connected to each other share an edge (38).

37. The holder (12) according to any one of p-36, characterized in that the sloping sides (36, 37, 46, 47) of the said upper and lower surfaces (30, 40) nose part (26) of the body are located in relation to each other with obtaining a quadrangular cross-sectional shape of the bow (26).

38. The holder (12) according to any one of p-37, characterized in that the two sloping sides (36, 37) of the said top surface (30) of the bow (26) of the body diverge at an angle to each other from the upper common edges (38), located along the bow (26)and two sides (46, 47) of the bottom surface (40) diverge at an angle to each other from the lower General edges (48)located along the fore part (26) of the specified entity.

39. The holder (12) according to any one of p-38, characterized in that the distance between indicated the data of the upper and lower General edges (38, 48) is greater than the distance between diametrically opposite sides of the specified upper and lower surfaces (30,40).

40. The holder (12) according to any one of p-39, characterized in that the sloping sides (36, 37) of the upper surface (30) of the bow (26) of the body are connected by common edges (39, 49) located respectively on the same side of the longitudinal centerline (22) of the body sloping sides (46,47) bottom surface (40) of the bow (26).



 

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FIELD: earth-moving equipment.

SUBSTANCE: proposed excavator tooth unit contains holder with main part and nose part, both arranged coaxially relative to longitudinal axial line of holder. Main part is made for fastening said holder to excavator. Nose part terminates in free front end and it has upper and lower surfaces located mainly respectively higher and lower than longitudinal axial line of said holder. Upper surface of said nose part has two inclined sides arranged at opposite sides from longitudinal axial line and in front relative to rear end of said nose part over its length. Each inclined side of said upper surface is arranged at angle of 25-65° to horizontal plane. Lower surface of said nose part has two sides arranged at opposite sides relative to longitudinal axial line of said holder. Cavity made in said nose part comes to one of inclined sides of said upper surface of nose part of holder, being arranged along axis intersecting opposite sides of upper and lower surfaces of said nose part at angle of 30-60° to horizontal plane. Excavator tooth has front and rear end parts. Blind space open to rear end of said tooth and designed for fitting-in section of nose part of holder is made in rear end part of said tooth. Tooth is provided with hole arranged in working combination with inclined cavity of holder when tooth and holder are in working connection. Pin-type locking device is provided being arranged in cavity of said holder and at least partially passed through hole in said tooth for detachable fastening of tooth and holder in working connected. Tooth and holder described in invention form with tooth unit a ground of inventions.

EFFECT: improved reliability of excavator tooth unit.

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FIELD: excavation equipment, particularly small metalwork for digging elements.

SUBSTANCE: unit for wearing and supporting members has replaceable tooth head and holding structure including intermediate holder with front part of front end arranged in pocket of rear end of tooth head and complementary thereto. Front part is secured in the pocket by the first glut pin structure. Holding structure also has main holder with front part of front end complementarily inserted in pocket of rear end of intermediate holder and secured in the pocket by the second glut pin structure. Rear end of main holder is operatively secured to cutting blade of excavator bucket. Each front part have oval configuration elongated in horizontal direction. Glut pin structures extend in horizontal direction. Front parts have reinforcing projections arranged in orifices adapted to secure front parts. Holder and tooth head are provided with mating ribbed areas.

EFFECT: reduced unit size, improved power and working characteristic, as well as wear-resistance characteristics.

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FIELD: dredgers or soil-shifting machines for special purposes, particularly to cut chaps in ground.

SUBSTANCE: device comprises at least one cutter brought into rotation and at least one the first cutting member to cut ground during cutter rotation in the first direction. At least one the second cutting member for ground cutting rotated in the second direction opposite to the first one is installed on the cutter. At least one of the cutting members may be shifted from the first ground cutting position to the second diverted position. Executive tool to shift the cutting member between the first and the second positions is also provided.

EFFECT: increased cutting ability in both rotational directions, prevention of excessive cutting member wear.

12 cl, 2 dwg

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EFFECT: increased service life and provision of self-sharpening of tooth point owing to fitting-in small size wear-resistant cast iron parts in steel base.

4 cl, 4 dwg

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SUBSTANCE: replaceable bit is telescopically put on transition extension and removably secured thereto by means of elongated flat connection unit provided with side peripheral part free of constriction. Connection unit extends in longitudinal direction through bit and connection orifices aligned with each other and prevents bit removal from transitional extension by forward movement thereof. Transversal support surface of bit side facing one end of connection unit prevents it outward passage through one bit orifice. Blocking member supported by another connection unit end and engaged with groove in another bit orifice prevents outward connection member passage through bit orifice provided with grooves. Support structure releasably retains the blocking member in closing and opening directions, which prevent blocking member displacement parallel to connection unit length.

EFFECT: simplified working tool replacement.

51 cl, 5 dwg

FIELD: mining industry.

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EFFECT: reduced effort to applied to small soil, reduced power consumption for ripping, increased service life of ripper point.

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FIELD: mining, particularly excavation equipment for detachable connection of replaceable tooth crown in earth-shifting machine.

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EFFECT: increased efficiency of connection unit for wearing and support member connection.

37 cl, 14 dwg

FIELD: construction.

SUBSTANCE: cog unit of earthmover bucket comprises cog with seat, which is open at the back and is a female part, besides specified cog has hole for fitting of fixing stud, adapter, having ledge, which is a male part that matches shape of specified seat, besides mentioned ledge is crossed with matching site for fixing stud, fixing stud inserted into specified hole of cog and into specified matching site in adapter and serving for cog fixation to adapter. At least one of specified opposite surfaces of ledge has lowered or deepened area arranged around matching site for fixing stud. At least the wall of seat that is inverted towards specified surface of ledge has relief part additionally to specified lowered or deepened area, having shape of boss that gradually increases in direction of open part of seat. Specified hole in seat walls and specified matching site in ledge have according flat back surfaces, which are matched to each other. Fixing stud has flat back surface, which simultaneously lies onto specified back surfaces of hole and matching site.

EFFECT: simplified design of cog unit for manufacturing, lower costs, avoidance of cog disconnection from adapter under severe operation conditions.

32 cl, 14 dwg

FIELD: transport.

SUBSTANCE: proposed device comprises tooth arranged in adapter and connecting element with sleeve made from elastic deformable material, and key. Said tooth and adapter have holes and zones to receive said sleeve and key. Note that said key is inserted into sleeve to extend therefrom. Note also that said key is fitted aligned with sleeve to displace therein, while sleeve is arranged in adapter part. Key has end part that makes key base, and key head on the body opposite part. Key head has part that makes bearing surface with shifted center. The latter enters appropriate surface made in the tooth first hole. Key head end can be turned by actuator element. Key base has anchoring appliance that enters in elastically deformable sleeve due to first tightening preset-force action. Key base end has conical part that thrusts against tooth second hole making second tightening action exceeding aforesaid one and created by key turn. Key turn governs is shift relative to its initial axis and allows its locking by anchorage on either tooth metal components or different bearing zones.

EFFECT: appropriate locking of tooth-adapter link, higher labor safety.

16 cl, 21 dwg

FIELD: construction.

SUBSTANCE: group of inventions relates to the field of mining and construction, in particular, to rotary cutting tool, which may be used to pierce through thickness of soil. Rotary cutting tool includes body, which has axial front end and axial back end, and also axial length. Hard tip, which has remote end, is fixed to body of cutting tool at its axial front end. Body of cutting tool has a section of back surface, arranged along axis behind remote end of hard tip, and having transverse dimension. Section of back surface includes axial front transverse dimension and minimum transverse dimension, which is located along axis behind axial front transverse dimension. Axial front dimension exceeds minimum transverse dimension. Section of back surface has axial length within the limits from approximately 10% to 35% of axial length of cutting tool body.

EFFECT: improvement of rotary cutting tool, to reduce extent of resistance of rotary cutting tool when piercing through soil thickness, with small angle of separation.

32 cl, 9 dwg

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