Method and device to joint wearing member and its support incorporated with road-building machine loading equipment

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

 

The invention relates to loading equipment, in particular for road building machines with grapples, buckets, or other means for the removal, extraction, bias, materials, etc. in order to move from this place to other parts of the work with the help of these machines.

The prior art methods for installing wearing parts on the knife different buckets, grapples and other containers to make them penetrating ability and for their protection. "Bearing adapter" attach to having a pointed profile knives machines, while wearing parts are the teeth or shields installed on the adapter-support using the exact temporal relation, so that they can be replaced after wear. For this purpose different methods, for example methods developed by the authors of the present invention.

In most cases, the relationship make a landing on the key, while the tooth, or shield, and bearing adapter have a profile under the key. This connection can be metal, with only a mechanical node, or may also include an element of elastic material, which in turn can be made in the form of coupling, pre-formed or prepared on site.

Also known dual key design, in which the two components have a elastic lining. In most cases, SPO the CI install and disassemble percussion instruments.

Among the known prior art in this field can be mentioned patents EP 0618333, WO 2004/03545 and EP 1048792. To be effective, the key device should provide a strong connection constituent elements, which often makes their installation and removal difficult, with the risk of injury to workers.

In cases landing on the plug, which do not require the use of percussion instruments, requires special and difficult in handling equipment, primarily for dismantling. In known devices, these keyway are complicated, involve an excessively large degree the use of mechanical means, and the unacceptable presence of materials that are detrimental to their work.

The object of the invention is having the novelty of the device is keyed connection, eliminating the necessity of using percussion instruments as for mounting and demounting of the teeth, thereby ensuring safe operation and ensuring the proper performance of the tooth adapter through the use of simple affordable system.

Another object of the invention is a device that does not require strict adherence to geometric dimensions for the positioning of the tooth relative to the adapter.

These and other objects are explained below on the Isani.

According to the first distinctive feature of the invention a device for connecting wearing the workpiece support, working on loading equipment, road construction machinery, comprising: mounted on the adapter tooth; and a connecting element with coupling made of elastically deformable material, and a key; in this the tooth and the adapter are made with holes and areas to accommodate couplings and pins;

when this key is installed coaxially with the clutch with the possibility of its displacement; and a clutch installed in part of the adapter;

the device is characterized by the fact that the key is: the end part, called the base of the pins; and the head of the pins on the other side of the body;

in this case introduced into the coupler so that the head of the key is from the clutch;

the head of the key has a part forming a bearing surface with a displaced center, which serves as a support and stop in the proper form, is made in the first hole of the tooth;

the end head pins made with the possibility of rotation using Executive funds;

the base of the pins has a means of anchoring, which is temporarily included in the elastically deformable coupling through the first addictive actions specified value;

the end of the pins has a tapered portion, abutting against the second hole of the tooth is as part of the addictive action the value of which exceeds the previous value, and which is created by rotation of the key;

in this case, rotation of the key causes its offset from its original axis and tightly tightened fastening pins or the clutch by anchoring or metal components of the tooth and adapter in different reference areas.

The technical solution according to the present invention, reaching the aforementioned goals, provides unexpected advantages and, in particular, provides the worker an opportunity necessary regulatory provisions dowels in place in accordance with the set values of the anchoring forces, axial and protivobolevoe effort. This solution is particularly appropriate, because it optimizes the fixing and connection in accordance with the applicable mechanical stresses arising during the term of service of each tooth.

These and other features of the invention are explained in the following description.

The object of the invention is disclosed in non-limiting example of its implementation and with reference to the accompanying drawings, on which:

Figure 1 is a perspective view with spatial diversity of the parts of the device according to the invention before Assembly of the tooth and adapter;

Figure 2 is a perspective view of the key according to the invention;

Figure 3 is a horizontal projection of the pins;

4 - in rticula projection cotters, made in the direction of the arrow F1 shown in Fig 3;

5 is a cross-section made along the line x-X shown in Fig 3;

6 is a longitudinal cross-section of the coupling;

Figa - longitudinal cross-section of an alternative coupling;

7 is a horizontal projection of the clutch 6;

Fig - side projection adapter;

Figure 9 is a horizontal projection of the adapter;

Figure 10 is a view of half of a tooth in longitudinal cross section;

11 is a horizontal projection of the tooth;

Fig - side projection node tooth adapter that is installed on the longitudinal side of the head of the tooth;

Fig - side projection node tooth adapter that is installed on the side of the base pins;

Fig - longitudinal cross section of the node tooth adapter that is installed along a cross section a-a according Fig;

Fig partial views of the site; and the plug and sleeve are in the first phase positioning.

Fig - bottom view Fig;

Fig is a partial view according to the second phase position by turning the key to the first angular distance;

Fig - bottom view Fig;

Fig is a partial view of a fourth phase position by turning the key to the second angular distance;

Fig - bottom view Fig;

Fig partial image of the fifth phase position by turning the key to the third angular distance; the

Fig - horizontal projection Fig.

Below is a more detailed description of the invention with reference to the accompanying drawings.

The connecting device between the tooth (D) and support (A) adapter according to the invention has a specific configuration of the pins with the General designation (S) in the elastically deformable coupling (F)made in a specific configuration and in combination with certain embodiments of the location of the tooth and adapter in order to perform specific functions. This function is to provide the desired orientation of the pins in the clutch in the axial direction and in rotation. When this clutch is partially compressed and creates an adjustable resistance, which determines the force of fixing the tooth and which, during maintenance, insures the key (S) from its random output, while holding it in a predetermined angular position. That is the key, in the axial direction is inserted in the coupling for a given axial line, then Orient in its angular position to secure the anchoring her part in the clutch and that it is tightly in contact with one or both openings of the tooth and adapter in dependence on addictive efforts and the magnitude of the rotation displacement of the pins in the proper connecting locations. The planting on the key can be performed in a vertical or horizontal is ulozhenie; while in the drawings is shown a horizontal position.

Below is a description of components that perform the aforementioned functions.

Rigid solid cylindrical key (C1) has an elongated body (1), the lower end area which is called the base (C2) pins has a terminal portion (C3) in the form of a truncated cone and the area (C6), depressions and protrusions which provide anchoring pins in the clutch. According to non-limiting variant implementation 3 this zone (C6) has one or more slots, or grooves, the depth of which decreases with increasing distance from the end of the dowels. These axial grooves made on the periphery of the through vpadina zones (S) connection, forming a gripping means according to the below description. The other end (C4) dowels (C) consists of a head, a cylindrical part (C5) pins, eccentric; and its diameter exceeds the diameter of the case (C1). This eccentric shown in Figure 3, 4, partially tangentially adjoins the case (C1) and acts on the opposite end, providing eccentricity. For the eccentric (C5) and at the end of the key has an area of (C7) of smaller diameter with one or more notches (C8) for their capture used for dismantling tool. The key is the end (C9) for the connection between the body (C1) and eccentric (C5).

The key (S) according to the SNO invention is made with a full 360 in one direction or another. Thus, the key characteristic of the implementation of the present invention.

Within the scope of the invention, the cylinder, the pins may be of any shape under a working tool for turning the key in the working conditions, according to the below description.

Further disclosed features of the coupling (F) with reference to 6, 6.1 and 7.

Clutch (F)containing the key (2)made of an elastically deformable material. This coupling with the external form (F1) in the form of a truncated cone is long, but shorter than the length of the front of the adapter, in which it is placed. Inside it has a Central hole (F2), the diameter of which equals the diameter (R1) of the key. Its thickness varies in accordance with the position offset, which can take the key (S) during maintenance. Its maximum thickness in the area of fit of the base (C2) pins, where the angular displacement exceeds the amount of displacement. The clutch is only the case (C1) of the key, and head (C4) with a Cam (C5) and zone (C7) smaller size remain outside of the coupling. For guaranteed anchoring pins in the clutch, as shown in Fig, it is possible to provide a small internal shrinkage in (F3), which will facilitate the anchoring force. Thus, in contrast to known and conventional forms of couplings of the prior art, the coupling according to izaberete the Oia has a simplified configuration.

What follows is a description of the tooth (D) and adapter (A), corresponding to the mentioned plug and socket.

The adapter (A) according Fig and 9, has a first hole, forming a cross-accommodating space (A2)having the shape of a truncated cone, directed to accommodate coupling with the appropriate configuration. This cross-accommodating space (A2) suitable to accommodate the clutch installed only part of the width of the containing area of the adapter. This cross-accommodating space has a retaining surface for the clutch. It is designed as a continuation in the form of a corresponding second aperture (A3), which is located on the outer side of the recess (A4) adapter. The diameter of the hole (A3) exceeds the diameter of the pins (C1) - in order to avoid premature contact with key in the first phase of its displacement. The clutch is injected through the opposite lateral recess (A5). The space between the hole (A3) and by the end of the enclosing space (A2) of the clutch (F) forms a transition (A7).

The tooth (D) according to Figure 10 and 11 has two holes (D2) and (D3) in the vertical and horizontal walls in accordance with the configuration of the tooth, and - according to the drawings and in one example, the lateral edges (D4) (D5). In the hole (D3) includes a cylinder (C4) pins. This hole has a size that is larger than the diameter (R1) of the key. The point is it in a preferred embodiment, the hole diameter (D3) is determined by adding to the value of the diameter (C1) pins of the double difference of the values of the diameters (C5) and (C1) pins. Then in the hole (D2) introducing the end (C3) the base of the pins, the diameter of which is substantially larger to prevent unwanted contact during the displacement of the key.

The deepening (D6) in the edge (D4) provides access to the recess (C8) in the key for its removal.

The following is a description of the site and actions of the connecting device during maintenance. As mentioned above, the site of the tooth and adapter according to their Assembly geometry may take varying positions relative to each other and connecting device according to the invention; and, in particular, the key is that you need direction in the axial and rotary directions, can be located in many positions. These provisions are described below and illustrated in the drawings (see Fig-18.1), where they are shown in six phases, in which, in each of them, they perform the same role.

PHASE 1: Corresponds to a node of the various elements and represents the initial position (see Fig and 15.1).

Clutch (F) enter and establish in the host area (A2) of the adapter. The key (S) is inserted through the hole (D3) vtalkivaniya it manually in the hole (F2) of the clutch. In this phase, the sword, the NCA is not in contact with any tooth, with either adapter. Head (C4) and, in particular, the Cam (C5) are oriented so that they took place in the hole (D3) of the tooth. According Pig and 15.1 axis DD holes (D2-D3) of the tooth is different from the axis A-F-C, total for adapter, couplings and pins. There are two axis DD and AFC initially parallel; variable interval E can be zero, if by chance, according to the geometry of the mount, they will converge. Full penetration of the pins in the coupling is carried out when the protrusion (C9) rests on the opposite surface (A6) adapter.

PHASE 2: Corresponds to the first method of fixing and tightening of the tooth (see Fig-16.1).

Using conventional machine tool such as a socket wrench, thrown over the head of the key, turn the key to the Cam (C5) in contact with the rear surface of the semicircle (D3.1) holes D3 (see Fig). First, as a result, the tooth is inserted into the adapter on the areas of their contact during maintenance. Immediately after creating a contact tooth is blocked. Continue turning the key it moves relative to the original axis A-F-C (see Fig and 16.1). Head pins through its eccentric (C5) forcibly pressed against having the form of a half circle surface (D3.1) in the first zone (R) blades, with the side hole on the tooth perceives against the acting force (F1C), which moves the body (C1) forward by compression couplings (F) along the arrow (F2C), which, resisting this compression, tilts the opposite part of the Foundation of the pins in the opposite direction and acts on the coupling of mechanical stress (F3C). Since the material of the coupling (F) is elastically deformable, it undergoes deformation in the contact area. Thus, area (C6), due to its specific configuration with the speakers and vadinami parts shown, for example, as grooves and protrusions (S), fits in the clutch and provides anchoring in the selected angular position, while holding him in place with a key.

If turning the key force continues to act, perform the role of a support stress part (C5) key increases in the mentioned area (D3.1), and, similarly, compression couplings creates an opposing force that is proportional to perceive it.

Thus, according to the invention the plug and, in particular, the housing pins act as the lever is partially blocked in the clutch. In this case, the key transmits, from its part (C5) to the point (P), adjustable force on the surface (D3.1) for fixation of the tooth. As shown in Fig, 16.1, key, shifted relative to its original position, changed its direction in the angle G1DR and its rotation is G1RT.

Positioning in a downward direction according Pig, 16.1 corresponds to the use of the connection node to perform conventional excavation.

PHASE 3: Corresponds to the second level of fixation and tightening of the tooth.

With continued rotation of the head of the key and, therefore, its eccentric (C5) against the surface (D3.1) moving forward the case (C1) of the key is continued, and he comes into contact with the adapter on the surface (A7) holes (A3), in which he creates a fixed swivel bracket on the second point (P1) (see Fig)move the key to an even greater extent, increasing the locking force of the clutch and, therefore, the locking force of the tooth.

PHASE 4: Corresponds to the maximum delay for fixation of the tooth (see Fig, 17.1).

In this work, throttling, then rotates the tool mentioned key.

With continued rotation of the key and Cam (C5) to the surface (D3.1): due to the displacement axis (CD and CA) forces applied to the torque producing points P and P1, offset pins is increased to an even greater extent. While its tapered end (C3) starts for the first time to get in touch along a third reference point or zone (P2)comprising holes (D2) of the tooth. This is a tight mechanical fit on a key using only contacts the metal supports in the s zones (P1) on the adapter and (B) and (P2) on the rear surfaces of the two holes (A3-A2) of the tooth. The clutch now works only for fixing in place of the pins and to consolidate its predetermined angular position. And the key is changed in its direction in the angle G2DR, and its rotary position angle G2RT. Implemented thus landing on the key corresponds to the hard working conditions.

It should be noted that according to the invention the locking and support means are moved in a consistent and regulated offset dowels in accordance with the terms of work with precise regulation of the retention efforts. Under normal operating conditions do just anchoring in the clutch, or in addition to the pinning action of tightening the support and creation of axial force when the metal components of the tooth and adapter have a location to perform the specified function.

PHASE 5: This phase according Fig-18.1 takes place when worn adapter at the last stage of use. In this case, with strong wear adapter new tooth penetrates deeply. The resulting landing on the key is similar to planting according to Phase 2, with the change of the orientation direction angle G3DR equivalent corner G1DR or less; and the orientation of the rotation angle G3RT value of 90, the maximum allowed by the system.

PHASE 6: the Dismantling of the pins. After clear and holes D3, if necessary, to gain access to the head of the key and to the protruding part (C7), the rotation is changed to the reverse direction in order to resolve the reference mechanical stresses generated by eccentric (C5) in the hole (D3). The grip on the clutch stops. The key returns to its original position according Fig, and the key can be removed simply by using axial force on the end part (C3) through the hole (D2), or using the action of a screwdriver in the recess of the C8.

Thus, non-novel technical solution according to the invention fully meets its stated goals. In addition, the invention provides a constant regulated pressure acting on the plug in its position corresponding to the nature of work performed and the conditions under which they are performed.

Modify the connection type and function keys or anchored in the coupling, or by close contact in coupling to the metallic components of the tooth and adapter, or Vice versa, is carried out by performing the appropriate form of the key and its displacement in the axial direction and in the direction of rotation.

The technical solution according to the invention provides an advantage in terms of capabilities required in-place pressure regulating Ankara the key, acting on located on the connecting host key.

1. Device for connection of wear parts and support, working on loading equipment, road construction machinery, containing mounted on the adapter (A) tooth (D) and the connecting element with coupling (F)made of elastically deformable material, and the key (S), with the tooth and the adapter are made with holes and areas to accommodate couplings and keys, and the key is put in the clutch and advocated its ends, and the key (S) is installed coaxially with the clutch with the possibility of its displacement; and a clutch installed in part of the adapter, wherein the key has an end part, which is called the base of the pins and head pins on the other side of the case (C1), while case (C1) is introduced into the coupler so that the head of the key is from the clutch, the head of the key has a part (C5), which forms a bearing surface with a displaced center, which serves as a support and stop in the proper form, is made in the first hole of the tooth, the end head pins made with the possibility of rotation using Executive means, the base of the pins has a means of anchoring, which is temporarily included in the elastically deformable coupling due first addictive actions specified value, the end of the pins has a tapered portion, abutting the Yuexiu into the second hole of the tooth as part of the addictive action the value of which exceeds the previous value, and which is created by rotation of the key, in this case, rotation of the key causes its offset from its original axis and tightly tightened fastening pins or the clutch by anchoring or metal components of the tooth and adapter in different reference areas (P) (P1) (P2).

2. The device according to claim 1, characterized in that the rigid solid cylindrical key (C1) has an elongated body (1) with the lower end area, called the base (C2) pins and having terminal part (C3) in the form of a truncated cone and the area (C6)having a configuration in the form of depressions and protrusions that create space for anchoring dowels in the clutch, while the other end (C4) dowels (C) consists of a head pins, cylindrical Cam (C5), the diameter of which is larger than the diameter of the case (C1), and for this eccentric (C5) and at the end of the key has an area of (C7) smaller size with one or more notches (C8) for attachment used for dismantling of the tool, and the key has a connecting end (C9) between the casing (C1) and eccentric (C5).

3. The device according to claim 2, characterized in that the zone (C6) has slots or grooves, the depth of which decreases with increasing distance from the end of the pins, and for the formation of the gripping components of these axial grooves supplemented on the PE Iveria hollow areas (S) connection.

4. The device according to claim 2, characterized in that the Cam is partially with tangential connection to the case (C1) and acts on the opposite end of this part, forming the eccentricity.

5. The device according to claim 2 or 4, characterized in that the key (S) made with full turn in either direction on its axis by 360 for its maintenance.

6. The device according to claim 1 or 2, characterized in that the coupling with the external form (F1) in the form of a truncated cone is long, but shorter than the length of the front of the adapter, where it is still installed, and has a Central inner bore (F2), the diameter of which equals the diameter of the shell (C1) cotters, and its thickness varies according to the position offset, which key (S) may be taken during maintenance.

7. The device according to claim 6, characterized in that the coupling has a negligible internal shrinkage in (F3) centre hole (F2), supplementing the force of the anchor.

8. The device according to claim 1, characterized in that the adapter (A) has a first hole, forming a cross-accommodating space (A2) with a configuration in the form of a truncated cone directed to accommodate coupling with the appropriate configuration, with the cross-accommodating space (A2) is configured to accommodate therein the clutch, ustanavlivat is th only part of the width of the containing area of the adapter, cross-accommodating space has a retaining surface for the clutch, and it extended consistent second hole (A3), protruding into the recess (A4) the outer side of the adapter, and a hole (A3) is essentially larger diameter than the diameter (R1) of the housing dowels, and the coupling is introduced through the recess (A5) of the opposite side, and the space between the hole (A3) and by the end of the enclosing space (A2) of the clutch (F) forms a transition (A7).

9. The device according to claim 1, characterized in that the tooth (D) has two holes (D2) and (D3), performed in a vertical or horizontal walls, or at the lateral edges (D4) (D5), and hole (D3) includes a cylinder (C4) cotters, and into the hole (D2) is the end (C3) the base of the pins, the size of which essentially exceeds the size of the basis.

10. The device according to claim 9, characterized in that the size of the hole (D3) is greater than the diameter (R1) of the key with the value equal to the double differential cross section (C5) of the eccentric and the cross-section of the case (C1) of the key.

11. The device according to claim 9, characterized in that the tooth has a cavity (D6), formed in the edge (D4) and provides access to the recess (C8), formed in the key for its removal.

12. The device according to claim 1, characterized in that the actuating means is a mechanical key.

13. The method of execution of the device according to any one of p is.1-4 or 7-12, characterized in that the line shape of the key and the possibility of its axial and rotary displacement provides the possibility of modifying the type of connection and operation of the dowels or anchors in the coupling or tight prolonged contact with metal components of the tooth and adapter.

14. The method according to item 13, wherein the insert sleeve in the host area (A2) of the adapter, and the key is not in contact with either the tooth or adapter, and the head of the key is in the hole (D2) of the tooth, turn the key instrument in force at the head of the key, resulting in eccentric (C5) is in contact with the hole (D3), causing displacement of the key and causing the anchoring part (C6) pins in the clutch in a predetermined angular position corresponding to the connecting node for the usual requirements of the excavation, and building key passes from its part (C5) to the point (P) adjustable force on the surface (D3.1) for fixation of the tooth.

15. The method according to item 13, characterized in that during the continued turning of the key and its eccentric (C5) against the surface (D3.1) tooth continue to move forward case (C1) of the key and bring it into contact with the adapter on the surface (A7) holes (A3), in which he creates a fixed swivel bracket on the second point (P1)move the key in another bol is capable of, thereby increasing the locking force in the clutch.

16. The method according to any one of p-15, characterized in that the hard working conditions extra turn of the key and Cam (C5) to the surface (D3.1) of the tooth causes the transfer support and the contact zones of the pins with the help of tight hollow mechanical planting on the key only with metal contacts in the reference zones (P1) on the adapter and (P-P2) on the rear surfaces of the two holes (D3-D4) of the tooth.



 

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40 cl, 7 dwg

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 invention relates to the field of earth-moving machines and can be used in the working bodies of draglines, excavators, bulldozers, loaders, with working bodies with replaceable teeth

The invention relates to the field of earth-moving machines, namely, bucket excavators, scrapers, stands rippers, teeth milling machines, machines for cutting slits in the ground, etc

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

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.

40 cl, 7 dwg

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

FIELD: mechanical engineering; design of excavator dipper teeth.

SUBSTANCE: parallelepiped inserts are fitted in tooth point and inserts of cylindrical form are fitted further on along working plane. Inserts manufactured of wear-resistant cast iron, owing to shadow effect, prevent intensive abrasive wear of steel base, thus increasing service life of tooth. As wear-resistant inserts are arranged only on one of working surfaces, other surfaces (opposite one) is subjected to more intensive wear which provides finally sharpening of tooth in process of operation. Use of such design and method of manufacture make it possible to increase service live more than two times and provided reliability of operation of excavator dipper.

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

FIELD: mining and building, particularly material shifting devices adapted to releasably connect replaceable bit of excavation tooth with transitional extension structure fastened thereto.

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.

SUBSTANCE: invention can be used in working members of mining and earth-moving machines, particularly, in machines for digging hard and frozen soils. Proposed ripper point for breaking hard and frozen soils has shank with slot for fastening, and wedge-like working part formed by front end surface, two side surfaces and rear surface. Working part of front end surface located in place of intensive wear is reinforced along longitudinal axial line H-H by three of stress concentrators, being round elements projecting over front end working surface and dipped into body of point. Distance L between concentrators in row and distance 1 between rows is equal to triple value of their diameter.

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

3 dwg

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

SUBSTANCE: device comprises the first and the second telescopically joined members, aligned orifices formed in the members and adapted for connector receiving and connection finger unit for forced retention of the first and the second members so that the members are telescopically arranged one relatively another. Connection finger unit comprises body, fixing member and resilient stop member. The body is arranged in the aligned orifices so that the body may be removed therefrom. The connector prevents separation of the first member from the second one. The body also has channel opened in outer surface thereof and having non-round side surface section. Fixing member is arranged in channel and limited by side surface section. The fixing member may rotate with respect to the body from fixing position into releasing position and in reverse direction. Resilient stop member is connected with fixing member so that the stop member may rotate together with fixing member. The stop member is adapted to retain fixing member in fixing position. The stop member has periphery delimiting fixing member. The periphery is slidably joined with non-round side surface section so that the periphery and the side surface are mutually complementary.

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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