Replaceable wearing member (variants), device for releasable wearing member connection with support structure and material shifting device including above member and support structure (variants)

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

 

The present invention relates in General to a device for moving material and, in the preferred embodiment, its implementation, and more specifically relates to a device for detachable coupling a replaceable tip digging tooth with its related design of the transition ledge.

Many types of devices for moving material equipped with interchangeable elements, which are removable manner mounted on a larger base designs and are abrasive, wear-intensive contact with floating material. For example, digging teeth, used in earthmoving equipment such as excavator buckets, etc. usually contain relatively massive transitional portion which is suitably attached to the front cutter bucket and has a reduced cross-section, the outstanding forward protruding section and a removable tip of the tooth, forming through his rear end hole in the pocket, which is removable manner accommodates the transition ledge. For holding the handpiece in a transition ledge through these mutually gear elements formed in alignment with the transverse holes adjacent to the rear edge of the tip, suitable connecting structure is inserted in the alignment hole and forcibly held within them, to a removable way is to secure the removable tip of the tooth at the associated area of the transition ledge.

The connecting structure adapted for introduction into the alignment holes of the tip of the tooth and the adapter protrusion, generally come in two main types: cone and coil connection kits, as well as flexible pin connectors. V connection kit contains a tapering coil part, which in the beginning is placed in the alignment holes of the tooth and transition details, and tapering klinovuyu part, which is then injected into the holes opposite the coil part to hold the design in place within the holes, the method causing the application of a high strength rigid clamp to the inner surfaces of the holes, and move the transition tab in the clutch by dense planting with a pocket of the tooth.

To insert, and then remove the steel wedge, requires very large forces copyfitting and over, usually requires two people to score and knock out the wedge - one person holds the tool to remove at the end of the wedge, and the other person hits the hammer on the tool to remove. This creates a security risk because of the possibility that will scatter the metal burrs, and/or the second person instead of a tool to remove hit with a sledgehammer the first man. Additionally, the wear between the mating surfaces of the tooth and the adapter protrusion is during excavation using tooth has a tendency to loosen tight fit wedge designs inside the hole of the tooth and the adapter protrusion, thus, allowing the V-design to fall out of the holes and, therefore, allowing the tooth to fall with the transition ledge.

Flexible splint designs usually contain two elongated metal element, adjacent and held in spaced apart orientation elastomeric material laid between them. Flexible pin design is introduced in the longitudinal direction in the hole of the tooth and the adapter protrusion to cause the elastomeric material to be compressed and elastically pressed metal elements to the holes of the lip and teeth, hold the connecting structure in place inside the hole and elastically pressing the plot of the transition tab in the grip in tight fit with the inner surface of the socket of the tooth.

Flexible pins also have their drawbacks. For example, compared with wedge designs they have substantially lower retention force on the spot. Additionally, reversing the load on the tooth creates holes in the tooth and the transition ledge gap through which dirt can penetrate into the pocket of the tooth and it is undesirable to accelerate the wear of the mating surfaces of the tooth and the adapter protrusion, which, consequently, reduces the holding force of the connector. In addition, elastomeric materials commonly used in flexible pin connectors, inevitably all reeny damage from hot, cold and acidic environments. In addition, and in V, and a flexible pin connectors requires relatively precise manufacturing tolerances on dimensions in sections of the tip of the tooth and the transition ledge to accommodate installing the associated connective structures.

Among the proposed solutions for these various connected with connectors of the problems, limitations and disadvantages in the Assembly assemblies consisting of the tip of the digging tooth and transition element included wedge-shaped connecting elements, which are inserted into the alignment holes of the tip and the transition ledge having complementary tapered configuration, with the inserted connector elastically displaced in the longitudinal "sealing" direction relative to the tip and the transition ledge by means of the locking element contained in the connecting element. The locking element rotatably and tightly fit into the end of the coupling element, based on the area of the tip of the tooth and spring-loaded longitudinally outward from the coupling element. An example of such a connecting structure of the wedge type illustrated and described in U.S. patent 6,108,950 issued to Ruwanga.

This particular wedge-type connection structure at least with the public reduces many problems limitations and disadvantages discussed above in connection with conventional flexible pins and wedge connection kits. However, they have several of their own limitations. For example, due to the wedge-shaped coupling element of the digging force of the load acting on the connecting element, can generate a substantial axial component of force on the coupling element, which in certain cases may cause damage to the locking element and to allow the connecting element to be ejected from the holes of the tip of the tooth and the transition element. In addition, because the spring loaded locking element has the ability to move inside the coupling element and the outside of it, the dirt may be drawn into the region of the inner mating surfaces of the connector and the locking element and substantially impair the seal contained in the locking element. In addition, while holding the locking element in its trip position for extended periods of time (for example, when all the connecting structure before using stored) elastomeric section of the locking section of the locking element is held in a compressed state and can receive unwanted residual strain compression.

From the preceding description I have but it would be desirable to create an improved connecting device excavation tooth, which eliminated or at least significantly reduced by the above-mentioned problems, limitations and disadvantages associated with conventional excavation tooth and other connective devices equipment to move material of the General type described above.

According to the invention a device for removable connections removable wearing element with a section of a support structure located in the internal pocket of the wear element and the wear element and the area of the support structure have in common is aligned along one line connecting hole, said device includes an elongated, essentially flat connecting element inserted in the alignment of the connecting hole and having first and second ends along the first axis at a distance from each other, the area of the outer peripheral surface, passing longitudinally between the first and second ends parallel to the first axis and describing this axis, the hole passing longitudinally inside through the first end along a second axis, transverse to the first axis, the area of the thrust grooves passing radially outward from the inner side surface of said hole, and Bakirova the second design, providing releasable retention of the connecting element in the connecting holes.

The connecting element may have at least along most of its length, cross-section, elongated in the direction transverse to the first axis. Elongated cross section of the connecting element may have a narrowed essentially wedge-shaped configuration.

The first end may be located along the axis of the region to the surface, passing transverse to the first axis, and the longitudinal opening can take place inside through the surface area, located along the axis of the field. The specified region may be a corner region of the first end having a seizure.

The connecting element may have a passing longitudinally outer side edge, and located along the axis of the region can pass sideways and inwards from the outer side edges.

The area of the thrust grooves may include spaced around the circumference at a distance from each other of the first and second thrust grooves passing radially outward from the surface of the inner side of said hole. The first and second thrust grooves can be aligned on the same line with each other in a direction parallel to the first axis.

The locking structure may include a locking element having a cylindrical housing, coaxially located is specified in the opening for rotation relative to the coupling element between the positions of the circuit and open circuit and having an outer end section, located outside said hole and having a transverse locking tab, protruding outwards.

The case may not be acting on it resultant force in any of the positions of the circuit and open circuit.

The outer end section of the housing may have a drive design on it, enabling controlled rotation of the housing relative to the coupling element between the positions of the circuit and open circuit.

Mounting foot at the position of the circuit may be outside the area of the outer peripheral surface of the connecting element in the direction transverse to the first axis, and the position of the opening may not be significantly outside the area of the outer peripheral surface of the connecting element in the direction transverse to the first axis.

The device may further comprise a recess, passing sideways in the area of the outer side surface of the housing of the locking element, and a thrust element supported on the housing and is resiliently biased to protrude outward through the notch, and the area of the thrust grooves of the connecting element include persistent seizure, which elastically latched resistant element during rotation of the locking element in the position circuit to split to hold the locking element in position in the circuit. At the location of the locking ele is enta in the position of closure of the thrust element and the thrust recess capable of interacting to prevent significant movement of the locking element relative to the coupling element parallel to the first axis.

The device may further comprise a recess, passing sideways in the area of the outer side surface of the housing of the locking element, and a thrust element supported on the housing and is resiliently biased to protrude outward through the notch in it, and elastically pressed in the groove region of the thrust grooves in the connecting element includes spaced around the circumference at a distance from each other of the first and second thrust grooves passing radially outward from the inner side surface of the hole in the connecting hole, the thrust element is elastically inserted into the first and second thrust grooves to split to hold the locking element from rotating relative to the coupling element when the locking element rotate, respectively, in the position of closure and opening.

The first and second thrust grooves can properly interact with the thrust element to prevent significant movement of the locking element relative to the coupling element parallel to the first axis at the location of the locking element in the position of closure and opening.

The device may further comprise an annular elastic sealing element, coaxially supported by the housing of the locking element between the area of the thrust grooves and the first to the CMA connecting element and tightly mating with the inner side surface of said hole.

According to the invention also created a replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end, first and second opposite parts of the side walls, partially bounding the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inward through the first and second side walls in the region of the pocket, and the area of the second side wall is in the second connecting hole so that reduces the area of its cross section relative to the cross-sectional area of the first connecting holes and shifts the outer axis plot of the second connection bore relative to the second axis, and plot the second side wall additionally has turned inward bearing surface, transverse to the second axis.

The abutment surface may be formed by a recess in the inner side surface area of the second side wall.

The element may further comprise a notch formed in the inner side surface of the first fixing holes. The recess may have an open side facing about the Asti pocket.

The element may be in the form of the tip of the tooth.

According to the invention results from the removable tip of the tooth containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing through the rear end sections of the first and second opposite side walls, partially bounding the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second side walls in the region of the pocket, and the area of the second side wall is in the second connection hole in such a way that reduces the area of its cross section relative to the cross-sectional area of the first connecting hole, and additionally has turned inward bearing surface, a transverse second axis, and the tip of the tooth has a curved section of the rear end surface through which the region of the pocket is held forward, and first and second opposite side walls end at the back of the curved rear end surface, and the plots of the third and fourth side walls, which are cross sections of the first and second opposite side walls and prog is changed back the plot is curved rear end surface.

According to the invention a device for moving material containing a support structure having a front section, passing forward along the first axis and having a connecting hole passing through it along a second axis perpendicular to the first axis, a replaceable wear element telescopically slid over the rear side of the front section and having a pair of opposite first and second connecting holes of the side walls, in alignment with the connecting hole of the front section, and a connecting node, a detachable manner holding the wear member on the front section and having an elongated connecting element, longitudinally passing through the connecting hole of the front section and the first and the second fixing holes wearing element and removable way located in them and having first and second end sections, appropriately located in the first and second connecting bores wearing element and blocking removal of the wear element of the front section of the support structure, and the connecting element has a section of the outer peripheral surface, passing longitudinally between the first and second end sections, the second parallel axis and describing it, the locking element can be rotated supported by the first end section of the connecting element, the first support surface located in the inner part of the device which is transverse to the second axis and blocking the passage of the locking element, and therefore the coupling element, out through the first connecting hole of the wear element and the second bearing surface located in the inner part of the device which is transverse to the second axis and blocking the passage of the coupling element to the outside through the second connecting hole of the wear element.

A support structure may be a transition element, the front section of the support structure is a transition ledge and wearing element is removable tip of the tooth.

The connecting element may have at least along most of its length, cross-section, elongated in the direction transverse to the second axis and parallel to the first axis. Elongated cross-section can be narrowed, essentially wedge-shaped configuration.

The locking element may have a cylindrical body which is rotatably located in the hole passing through the axis inside through the first end section of the connecting element, and cross the locking section, attached to the outer end portion of the housing outside of the connecting element, and at the location of the locking element at the position of the locking circuit area is outside the area of the outer peripheral surface of the connecting element in the direction transverse to the second axis, and located opposite the first support surface to prevent the passage of the coupling element to the outside through the first connecting hole of the wear element, the locking element has the ability to rotate from the position of the circuit in the position of the opening in which the locking section is not significantly outside the area of the outer peripheral surface of the connecting element in the specified direction, and thus can be used to retrieve the connecting element out through the first connecting hole of the wear element.

The body of the locking element may not be valid at him axial forces in any of the positions of the circuit and open circuit.

The first end section of the connecting element may be longitudinally located region to the surface, transverse to the second axis, and the specified hole penetrates into the surface section located longitudinally region and parallel to the second axis.

The connecting element may have a passing longitudinally outer side edge, and longitudinally located region passes inward from the outer side edges.

The device may further comprise interacting resistant construction, located on the connecting element and the housing of the locking element and detachable manner holding the locking element in a selected one of its positions circuit or disconnection.

Interacting resistant construction may include the area of the thrust grooves passing radially outward from the surface of the inner side of the hole and elastically supported the thrust element supported by the housing of the locking element and operatively associated with the thrust area of fill.

The area of the thrust grooves may include spaced around the circumference at a distance from each other of the first and second thrust grooves passing radially outward from the inner side surface of said hole, and thrust element is in the first thrust of the recess when the locking element is in the position circuit, and placed in a second persistent recess when the locking element is in position in the opening.

Interacting resistant construction can be able to prevent significant movement of the locking element classifies the flax coupling element parallel to the second axis at the location of the locking element in the position of closure and opening.

The first and second thrust grooves may be able to appropriately interact with the thrust element to prevent significant movement of the locking element relative to the coupling element parallel to the second axis at the location of the locking element in the position of closure and opening.

The device may further comprise an annular elastic sealing element, coaxially supported by the housing of the locking element between the area of the thrust grooves and the first end section of the connecting element and tightly mating with the inner side surface of said hole.

The supporting structure may have a base section having a curved front surface, from which the front section is forward, and the wear element has a curved section of the rear end surface, with the possibility of complementary coupling with the curved front surface of the base section, and through which the region of the pocket goes forward, and the region complementary pocket accommodates front area, while wearing the item has lots of first and second opposite side walls, through which accordingly are first and second connecting holes wearing element, and plots Tr is the article and fourth opposing side walls, cross sections of the first and second opposite side walls and passing back over the curved section of the rear end surface of the wear element.

The front surface of the base section may be convex and the rear end surface of the wear element may be concave.

A support structure may be digging a transition element, the front section of the support structure may be a transition ledge and the wear element may be removable tip of the digging tooth.

The first connecting hole of the wear element may be passing around the circumference of the groove accommodating the locking section and forming the first bearing surface.

The second support surface may be the surface of inner side wall of the wear element facing the surface of the second end portion of the connecting element, transverse to the second axis.

The cross-sectional area of the second connection bore wear element can be reduced relative to the cross-sectional area of the first connecting holes wearing element section of the side wall of the wear element on which the second bearing surface. The area of the side wall wearing elementology to have the area of the inner side of the recess, which is the second bearing surface.

According to the invention created replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite walls, partially bounding the region of the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second side walls in the region of the pocket, and the first connecting hole has a support recess formed in its inner side surface, thus deteriorating the element has a curved section of the rear end surface through which the region of the pocket is held forward, the areas of the first and second opposite side walls end at the back of the curved rear end surface areas of the third and fourth opposite walls, the cross-sections of the first and second opposite side walls and going back for a plot curved rear end surface.

The supporting recess may have an open side facing the pocket areas.

The item is made in the form of n the tip of the tooth.

According to the invention created replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite side walls, partially bounding the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis and accordingly held inside through the sections of the first and second opposite side walls in the region of the pocket, and the area of the second side wall is held in the connecting hole, reducing the area of its cross-section relative to the cross-sectional area of the first connecting hole, and additionally has turned inward bearing surface, transverse to the second axis, while wearing the item has a section of the rear end surface curved about an axis parallel to the second axis, and through which the region of the pocket goes forward, and the areas of the first and second opposite side walls end at the back of the curved rear end surface.

According to the invention also created a replaceable wear element containing the front end, rear end, located on the leg from the front end along a first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite side walls, partially bounding the region of the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis and accordingly held inside through the sections of the first and second opposite side walls in the region of the pocket, and the first connecting hole has a support recess formed in its inner side surface, while wearing the item has a section of the rear end surface curved about an axis parallel to the second axis, and through which the area of the pocket goes forward, and the areas of the first and second opposite side walls end at the back of the curved rear end surface.

According to the invention a device for moving material containing a support structure having a front section, passing forward along the first axis and having a connecting hole passing through it along a second axis, transverse to the first axis, a replaceable wear element telescopically slid over the rear side to the front section of the support structure and having opposite first and second side walls, a pair of connect is lnyh holes, in alignment with the connecting hole in the front section, and an elongated, essentially flat connecting member, a removable manner accommodated in aligned connecting holes that hold the wear member on the support structure and having first and second ends spaced along the first axis, the area of the outer peripheral surface, passing longitudinally between the first and second ends parallel to the first axis defining a hole passing longitudinally inward through the first end along a second axis, parallel to the first axis, the area of the thrust grooves passing radially outward from the inner side surface of said hole, and a locking design, detachable way retaining the connecting element is aligned in one line connecting the holes.

The following is a more detailed description of embodiments of the invention with reference to the accompanying drawings, which depict the following :

Figure 1 depicts a longitudinally shortened, horizontal directional view in section, the excavation site of the tip of the tooth and a transition element, containing a specially designed connecting design with lockable rotation, performing according to the present invention.

Figure 2 - cross section of the node on the line 2-2 in figure 1.

Figure 4 is a top view of the connecting structure with its rotating locking section in its position opening.

5 is a schematic view in enlarged scale cross-section of the connecting structure along the line 5-5 in figure 2.

As shown in figures 1 and 2, in the present embodiment of the invention, the node 10 of the tip of the digging tooth/transition element contains the wear element in the form of an elongated hollow replaceable tip 12 of the tooth passing in the direction from front to back along the longitudinal axis 14 and having front and rear sections 16 and 18, a support structure in the form of a transition element 20 having a base 22 from which protrudes forward protruding section 24 of smaller section, and a specially designed connecting node 26, which provides blocking of rotation used for detachable retention of the tip 12 of the tooth on the transition ledge 24, as described hereinafter.

The tip 12 of the tooth and the adapter element 20 have a configuration similar to the tip of the tooth and the associated transition element, illustrated and described in U.S. patent No. 6564482 transferred to the same assignee as the assignee of the present invention. Tip 12 zu is a and the transition element 20 can have a wide variety of alternative forms without derogating from the principles of the present invention. In addition, while the present invention is illustrated and described in this document as used in conjunction with a transition element as the support structure and the tip of the tooth as a wearing element supported by a support structure, specialists in the art will realize that different types of support structures and attached and wearing parts can be used without straying from the principles of the present invention. As an example, but not as a limitation, the transition element 20 may be an intermediate transitional element attached to its rear end to the base of the transition element and the tip 12 of the tooth may be an intermediate transition element having a front end section that was installed with removable tip of the tooth.

As shown in figures 1 and 2, the tip 12 of the tooth has a concave section 28 of the surface of the rear end through which the pocket 30 extends into the inner portion of the tip 12 of the tooth. As best seen in figure 1, from the front entrance to the tip 12 of the tooth through the curved section 28 of the surface of the rear end of the pocket 30 tapers forward and vertically inside and has a reduced cross-section, stabilizing the front end section with a generally horizontal opposite sections 32 and 34 of the surfaces in which RNA and bottom sides.

Pocket 30 formed at the tip 12 of the tooth pair of opposed side walls 36 and 38 of the top and bottom and a pair of opposite vertical side walls 40 and 42 which terminate at the back of the curved surface 28 of the rear end of the tip 12 of the tooth. Ago and vertically diverging rear end sections 36A and 38A of the upper and lower walls 36, 38 of the tip of the tooth pass back over the curved surface 28 of the rear end of the tip of the tooth. Alignment of the connecting holes 44, 46, respectively, are held inside through the vertical side walls 40 and 42 of the tip of the tooth in the pocket 30 and spaced along the axis 48, the transverse axis 14. As better illustrated in figure 2, the section 42A of the side wall 42 passes back through the communication hole 46 in such a way that reduces the area of its cross section compared to the cross-sectional area of the other of the connecting holes 44.

For purposes described later in this document, the section 42A of the side wall (2) has an inner side recess, which forms on the section 42A of the side wall inner side bearing surface 50, the transverse axis 48 and directed to the area 30 of the pocket. Additionally, what is also shown in figure 2, the inner side surface of the hole 44 of the side wall is passing around the circumference of the recess 52 formed on the inside surface of narodnostey side wall 40. The recess 52 opens inwards, into the pocket 30, and has on its upper side, as seen in figure 2) bearing surface 54, the transverse axis 48.

Transition ledge 24 complementary and removable image fits in the pocket 30 of the tip of the tooth and has a connecting hole 56 passing through it parallel to the axis 48 and in alignment with the connecting holes 44, 46 of the tip of the tooth. Transition base 22 has a convex front surface 58, which limits the rear end of the transition ledge 24, and complementary and slidable engages the concave section 28 of the rear end surface of the tip of the tooth 12. With the transition ledge 24, a removable manner accommodated in the pocket 30 of the tip of the tooth, as illustrated in figures 1 and 2, the rear end parts 36A, 38A of the tip 12 of the tooth protecting the image overlap areas of the surfaces of the upper and lower sides of the transition base 22.

As shown in figure 1-4, the connecting node 26 includes an elongated flat connecting element 60 and the locking element 62. The connecting member 60 has opposite ends 64 and 66, tapering cross-section along its length, which is elongated in a direction parallel to axis 14, the opposite front and rear longitudinal side edges 68 and 70 and the field angle of the grooves, passing sideways and inward from the side edges 8 and 70, and forming the opposite end corner sections longitudinally of the built-in end surfaces 72 and 74 of the connecting element 60. Outer passing in the longitudinal direction of the peripheral side surface 76 of the flat connecting element 60 describes the longitudinal axis of the connecting element and parallel to it, in contrast to narrow towards her.

Round channel or hole 78 passes longitudinally inward through the built-in end surface 72 of the connecting element 60 and has an area of hard grooves formed in its inner side surface. As best illustrated in figure 5, this area of the thrust grooves preferably contains two persistent notches 80, 82, divided by the circumference angle of 90° and longitudinally aligned in the hole 78.

The locking element 62 has an elongated cylindrical body 84, the lower longitudinal portion of which (as seen in figure 2) coaxially and rotatably fit within the holes 78 of the connecting element, with the upper end section of the housing 84 is out of the area 72 built-in end surface of the connecting element. Transverse mounting tab 86 is attached to the exposed outside the end of the housing 84 of the locking element, and the lower end area of the housing 84 within the hole 78 having the t side thrust recess 88, passing radially inward through the outer side surface. As schematically depicted in the section view in figure 5, the thrust structure 90 is contained within the thrust recess 88 and includes a radially outer metal resistant element 92 that is attached to the elastomeric radially inner thrust area 94. The thrust element 92 is resiliently biased to protrude outward from the notch 88, but it can radially drum into the notch 88 against the elastic resistance of the elastomeric section 94.

A non-circular drive design 96 (for example, plot hexagonal or rectangular head) stands up from the mounting tabs 86 and can be meshed with the appropriate key (not shown)used for forced rotation of the locking element 62 between the position of the circuit in which the mounting foot 86 is sideways and outwards beyond the outer peripheral side surface 76 of the connecting element 60, as shown in figure 1-3 and the position of the opening in which the mounting foot 86 is not sideways and outwards beyond the outer peripheral side surface 76 of the connecting element 60, as illustrated in figure 4. The drive structure 96 may, of course, if you want to have many alternative configurations, such as non-circular plot with dredging, the area with slots etc.

When turning the locking element 62 in its Ref is the reference circuit resistant element 92 is latched in the internal hard recess 80 of the connecting element, thus resulting elastomeric thrust area 94 in essentially weakened orientation and detachable manner holding the locking element 62 in its position of closure. During subsequent rotation of the locking element 62 from its position of closure in its position opening the thrust element 92 is pressed in the thrust groove 88 of the locking element, and then snaps outwardly into the inner thrust the notch 82 of the connecting element, thereby causing the elastomeric thrust area 94 back in, essentially, a weakened state and detachable manner holding the locking element 62 in its position opening.

The same is the movement of the thrust element 92 when the locking element 62 then rotates back into its position of closure of the position opening. An annular elastic sealing element 98 (figure 2) relies on the body 84 of the locking element and coaxially surrounds it, between the mounting tab 86 and thrust recess 88 of the locking element and slidable engages with the inner side surface of the hole 78 of the connecting element to delay the penetration of dirt and other abrasive materials in the inner part of the coupling element 60 during use of the transition element and the tooth Assembly 10.

As best seen in figure 2, vertically the e-height internal hard grooves 80, 82 (as seen in figure 2) of the connecting element, essentially identical to the height of the thrust element 92. Accordingly, the interaction between the thrust element 92 and these thrust grooves 80, 82, essentially prevents relative longitudinal movement between the connecting element 60 and the locking element 62 when the locking element 62 is in one of its positions - circuit or disconnection.

With the tip 12 of the tooth, telescopically slid over the rear side of the transition ledge 24, as illustrated in figure 2, the connecting node 26 to promptly establish, first rotating the locking element 62 in the position of the opening, and then inserting the connecting node 26, the first connecting end 66, down (as shown in figure 2) through aligned on one line connecting holes 44, 56, 46, and the forward edge 68 of the connecting element 60 is turned forward, so that the connecting element 60 complementary fit in the connecting hole 56 of the protrusion, and the thrust end surface 74 of the connecting element is in contact with thrust surface 50 of the tip of the tooth. In this inserted orientation of the connector 26, the opposite ends 64, 66 of the connecting element 60 are respectively in the connecting holes 44, 46 of the tip of the tooth, in order, thus the om, to block removal of the established tip 12 of the tooth from the transition of the protrusion 24 by moving forward.

Then inserted the connection node 26 detachable way, locked in this blocking orientation by simply turning the locking element 62 from its position opening in its position of closure, causing the locking tab 86 to enter the notch 62 of the tip of the tooth and to go outside to the associated thrust surface 54, which can best be seen in figure 2. Thus the cooperating thrust surfaces 50, 74, adjacent to the end 66 of the connecting element, prevent the connecting node 26 to pass to the outside through the communication hole 46 of the tip of the tooth, and interacting resistant surface 54, 72 prevent the passage of the connecting node to the outside through the communication hole 44 of the tip of the tooth.

Illustrated configuration of the thrust surface in the inner part of the node 10 of the tip of the tooth/transition element, namely the sets 50, 74 and 54, 72 resistant surfaces can be modified in many ways without departure from the principles of the present invention. For example, but not as a limitation, the thrust surface 50 of the tip of the tooth can be moved inside the transition ledge 24 (and the corresponding thrust surface of the coupling element, with the responsibility moved in such a way as to be facing this hard surface transition ledge). As another example, but not as a limitation, the lower package 50, 74 of the thrust surfaces (as seen in figure 2) can be eliminated, and the notch 52 of the tip of the tooth to be modified so that it had two opposing thrust surfaces facing in opposite sides of the locking tabs 86 in the position of the circuit and serve to prevent longitudinal movement of the connector 26 to the outside through one of the connecting holes 44, 46 of the tip of the tooth.

Since the outer peripheral side surface 76 of the connecting element 60 parallel to the axis 48, the working load on the node 10 of the tip of the tooth/transition element does not cause significant longitudinally directed loads on the connecting element 60, which would seek to throw it out of the connecting holes 44, 46, 56 and cause a significant load on the locking element 62. In addition, the connecting node 26 can be installed without the need of plugging it into the connector holes. Therefore, two or more Assembly 10 can be placed closer to each other due to lack of adequate space for plugging". Also, since resistant design in the connection node 26 is substantially prepyatstvuyushchego longitudinal movement between the connecting element 60 and the locking element 62 during operation of the node 10, the penetration of dirt and other abrasive materials in the inner part of the connecting element 60 and the associated wear on the internal elastic sealing element 98 is substantially reduced. Additionally, since the position of the opening of the locking element elastic stretch resistant construction the locking element is essentially in a weakened state, undesirable deformation of the compression in the elastic thrust of the plot resulting from long periods of storage the connector with the locking element in its position opening essentially eliminated.

Prior to the detailed description should be clearly construed as this only as an illustration and example, and the scope and essence of the present invention is limited solely by the applied claims.

1. Device for removable connections removable wearing element with a plot of the support structure located in the internal pocket of the wear element and the wear element and the area of the support structure have in common is aligned along one line connecting the holes, where the device includes an elongated, essentially flat connecting element inserted in the alignment of the connecting hole and having the th first and second ends, along the first axis at a distance from each other, the area of the outer peripheral surface, passing longitudinally between the first and second ends parallel to the first axis and describing this axis, the hole passing longitudinally inward through the first end along a second axis, transverse to the first axis, the area of the thrust grooves passing radially outward from the inner side surface of said hole, and a locking design for detachable retention of the connecting element in the connecting holes.

2. The device according to claim 1, wherein said connecting element has, at least along most of its length, cross-section, elongated in the direction transverse to the first axis.

3. The device according to claim 2, in which the elongated cross section of the connecting element has narrowed essentially wedge-shaped configuration.

4. The device according to claim 1, in which the first end is located on an axis region with a surface area passing transverse to the first axis, and a hole longitudinally penetrates into the surface area, located along the axis of the field.

5. The device according to claim 4, in which is located along the axis of the area is a corner region of the first end having a seizure.

6. The device according to claim 4, in which the connecting element has a longitudinally projetado the outer side edge and located along the axis of the region is held sideways and inwards from the outer side edges.

7. The device according to claim 1, in which the area of the thrust grooves includes spaced around the circumference at a distance from each other of the first and second thrust grooves passing radially outward from the surface of the inner side of said hole.

8. The device according to claim 7, in which the first and second thrust recesses in alignment with each other in a direction parallel to the first axis.

9. The device according to claim 1, wherein the locking structure includes a locking element having a cylindrical housing, coaxially located in the specified hole to rotate relative to the coupling element between the positions of the circuit and open circuit and having an outer end section located outside said hole and having a transverse locking tab, protruding outwards.

10. The device according to claim 9, in which the body has no effect at him resultant force in any of these positions circuit and open circuit.

11. The device according to claim 9, in which the outer end section of the housing has a drive design on it, enabling controlled rotation of the housing relative to the coupling element between the positions of the circuit and open circuit.

12. The device according to claim 9, in which the mounting foot at the position of the circuit is outside the area of the outer peripheral surface of the connecting what about the element in the direction transverse to the first axis, and the position of the opening is not significantly outside the area of the outer peripheral surface of the connecting element in the direction transverse to the first axis.

13. The device according to item 12, optionally containing recess, passing sideways in the area of the outer side surface of the housing of the locking element, and a thrust element supported on the housing and upposedly to extend to the outside through the notch, and the area of the thrust grooves of the connecting element includes the thrust hollow elastic snaps resistant element during rotation of the locking element in the position circuit to split to hold the locking element in position in the circuit.

14. The device according to item 13, in which the location of the locking element at position circuit resistant element and the thrust groove cooperate to prevent significant movement of the locking element relative to the coupling element parallel to the first axis.

15. The device according to item 12, optionally containing recess, passing sideways in the area of the outer side surface of the housing of the locking element, and a thrust element supported on the housing and upposedly to speak out through the notch in it, and progovarivanija in the groove region of the thrust grooves in the connecting element which includes spaced around the circumference at a distance from each other of the first and second thrust grooves, passing radially outward from the inner side surface of the hole in the connecting hole, the thrust element, progestagenic in the first and second thrust grooves to split to hold the locking element from rotating relative to the coupling element when the locking element to rotate respectively in the position of closure and opening.

16. The device according to item 15, in which the first and second thrust recesses appropriately interact with the thrust element to prevent significant movement of the locking element relative to the coupling element parallel to the first axis at the location of the locking element in the position of closure and opening.

17. The device according to claim 9, further containing an annular elastic sealing element, coaxially supported by the housing of the locking element between the area of the thrust grooves and the first end of the connecting element and tightly mating with the inner side surface of said hole.

18. Replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end, first and second opposite parts of the side walls, partially limit the gure pocket, aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inward through the first and second side walls in the region of the pocket, and the area of the second side wall is in the second connecting hole so that reduces the area of its cross section relative to the cross-sectional area of the first connecting holes and shifts the outer axis plot of the second connection bore relative to the second axis, and plot the second side wall additionally has turned inward bearing surface, transverse to the second axis.

19. The item p, in which the bearing surface is formed by a recess in the inner side surface in the specified area of the second side wall.

20. The item p, optionally containing a recess formed in the inner side surface of the first fixing holes.

21. The element according to claim 20, in which the recess has an open side facing the pocket areas.

22. The item p, which is made in the form of the tip of the tooth.

23. The replaceable tip of the tooth containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing through the rear end, Uch the harsh conditions of the first and second opposite side walls, partially bounding the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second side walls in the region of the pocket, and the area of the second side wall is in the second connecting hole so that reduces the area of its cross section relative to the cross-sectional area of the first connecting hole, and additionally has turned inward bearing surface, a transverse second axis, and the tip of the tooth has a curved section of the rear end surface through which the region of the pocket passes forward, and first and second opposite side walls end at the back of the curved rear end surface, and the plots of the third and fourth side walls, which are cross sections of the first and second opposite side walls and are held back by the curved section of the rear end surface.

24. Device for moving material containing a support structure having a front section, passing forward along the first axis and having a connecting hole passing through it along a second axis perpendicular to the first axis, replaceable synthetic is of a rotatable element, telescopically slid over the rear side of the front section and having a pair of opposite first and second connecting holes of the side walls, in alignment with the connecting hole of the front section, and a connecting node, a detachable manner holding the wear member on the front section and having an elongated connecting element, longitudinally passing through the connecting hole of the front section and the first and second connecting holes wearing element and removable way located in them and having first and second end sections, appropriately located in the first and second connecting bores wearing element and blocking removal of the wear element of the front section of the support structure, and a connecting the item has a section of the outer peripheral surface, passing longitudinally between the first and second end sections, the section of the outer peripheral surface parallel to the second axis and describes it, the locking element can be rotated supported by the first end section of the connecting element, the first support surface located in the inner part of the device which is transverse to the second axis and blocking the passage of the locking e the ment and consequently, the coupling element to the outside through the first connecting hole of the wear element and the second bearing surface located in the inner part of the device which is transverse to the second axis and blocking the passage of the coupling element to the outside through the second connecting hole of the wear element.

25. The device according to paragraph 24, in which the support structure is a transition element, the front section of the support structure is a transition ledge and wearing element is removable tip of the tooth.

26. The device according to paragraph 24, in which the connecting element has, at least along most of its length, cross-section, elongated in the direction transverse to the second axis and parallel to the first axis.

27. The device according to p, in which an elongated cross-section is narrowed, essentially wedge-shaped configuration.

28. The device according to paragraph 24, in which the locking element has a cylindrical body rotatably located in the hole passing through the axis inside through the first end section of the connecting element, and a transverse locking section attached to the outer end portion of the housing outside of the connecting element, and at the location of the locking position of the item snapping the locking area is outside the area of the outer peripheral surface of the connecting element in the direction transverse second axis, and located opposite the first support surface to prevent the passage of the coupling element to the outside through the first connecting hole of the wear element, the locking element has the ability to rotate from the position of the circuit in the position of the opening in which the locking section is not significantly outside the area of the outer peripheral surface of the connecting element in the specified direction and, thus, allows to extract the coupling element to the outside through the first connecting hole of the wear element.

29. The device according to p, in which case the locking element has no effect at him axial forces in any of these positions circuit and open circuit.

30. The device according to p, in which the first end section of the connecting element is longitudinally located region to the surface, a transverse second axis, and the specified hole penetrates into the surface section located longitudinally region and parallel to the second axis.

31. The device according to item 30, in which the surface located longitudinally region represents the containing recess corner region of the first end portion of the connecting element.

Way on item 30, in which the connecting element is a meet passing longitudinally outer side edge and located longitudinally region passes inward from the outer side edges.

33. The device according to p, optionally containing interacting resistant construction, located on the connecting element and the housing of the locking element and detachable manner holding the locking element in a selected one of its positions circuit or disconnection.

34. The device according to p, in which the interacting resistant designs include the area of the thrust grooves passing radially outward from the surface of the inner side of the hole, and prohairesis resistant element supported by the housing of the locking element and operatively associated with the thrust area of fill.

35. The device according to clause 34, in which the area of the thrust grooves includes spaced around the circumference at a distance from each other of the first and second thrust grooves passing radially outward from the inner side surface of said hole, and thrust element is in the first thrust of the recess when the locking element is in the position circuit, and placed in a second persistent recess when the locking element is in position in the opening.

36. The device according to clause 34, in which the interacting resistant construction able to prevent significant movement of the locking element relative to the coupling element parallel to the second axis at the location of the locking element is in the position of closure and opening.

37. The device according to p, in which the first and second thrust excavation able to properly interact with the thrust element to prevent significant movement of the locking element relative to the coupling element parallel to the second axis at the location of the locking element in the position of closure and opening.

38. The device according to clause 34, further containing an annular elastic sealing element, coaxially supported by the housing of the locking element between the area of the thrust grooves and the first end section of the connecting element and tightly mating with the inner side surface of said hole.

39. The device according to paragraph 24, in which the supporting structure has a base section having a curved front surface, from which the front section is forward, and the wear element has a curved section of the rear end surface, with the possibility of complementary coupling with the curved front surface of the base section, and through which the region of the pocket goes forward, and the region complementary pocket accommodates front area, while wearing the item has lots of first and second opposite side walls, through which accordingly are first and second connecting from is Erste wearing element, and the plots of the third and fourth opposing side walls, the cross-sections of the first and second opposite side walls and passing back over the curved section of the rear end surface of the wear element.

40. The device according to 39, in which the front surface of the base segment is convex and the rear end surface of the wearing element is concave.

41. The device according to 39, in which a support structure is digging transition element, the front section of the support structure is a transition ledge and wearing element is replaceable NIB digging tooth.

42. The device according to p, in which the first connecting hole of the wearing element is passing around the circumference of the groove accommodating the locking section and forming the first bearing surface.

43. The device according to paragraph 24, in which the second bearing surface is the surface of inner side wall of the wear element facing the surface of the second end portion of the connecting element, a transverse second axis.

44. The device according to paragraph 24, in which the cross-sectional area of the second connection bore wear element is reduced relative to the cross-sectional area of the first connecting holes isnative is the existing element section of the side wall of the wear element, hosting the second bearing surface.

45. The device according to item 44, in which the area of the side wall of the wear element has a region of the inner side of the recess in which is located the second bearing surface.

46. Replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite walls, partially bounding the region of the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second side walls in the region of the pocket, and the first connecting hole has a support recess formed in its inner side surface, while the wear element has a curved section of the rear end surface through which the region of the pocket is held forward, the areas of the first and second opposite side walls end at the back of the curved rear end surface and the plots of the third and fourth opposite walls, the cross-sections of the first and second opposite side walls and going back for a plot of isign is the rear end surface.

47. Item by item 46, in which the supporting groove has an open side facing the pocket areas.

48. The item Pb, which is made in the form of the tip of the tooth.

49. Replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite side walls, partially bounding the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second opposite side walls in the region of the pocket, and the area of the second side wall is held in the connecting hole, reducing the area of its cross section relative to cross-sectional area of the first connecting hole, and additionally has turned inward bearing surface, transverse to the second axis, while wearing the item has a section of the rear end surface curved about an axis parallel to the second axis, and through which the region of the pocket goes forward, and the areas of the first and second opposite side walls end at the back of the curved rear end surface of the I.

50. Replaceable wear element containing the front end, rear end, located at a distance from the front end along the first axis, the area of the pocket, passing forward through the rear end sections of the first and second opposite side walls, partially bounding the region of the pocket and aligned on one line of the first and second fixing holes spaced from each other along a second axis, transverse to the first axis, and accordingly passes inside through the sections of the first and second opposite side walls in the region of the pocket, and the first connecting hole has a support recess formed in its inner side surface, when wearing this item has a section of the rear end surface curved about an axis parallel to the second axis, and through which the region of the pocket goes forward, and the areas of the first and second opposite side walls end at the back of the curved rear end surface.

51. Device for moving material containing a support structure having a front section, passing forward along the first axis and having a connecting hole passing through it along a second axis, transverse to the first axis, a replaceable wear element telescopically slid over the rear side on uradni section of the support structure and having opposite first and second side walls, a pair of connecting holes, in alignment with the connecting hole in the front section, and an elongated, essentially flat connecting member, a removable manner accommodated in aligned connecting holes that hold the wear member on the support structure and having first and second ends spaced along the first axis, the area of the outer peripheral surface, passing longitudinally between the first and second ends, parallel to the first axis defining a hole passing longitudinally inward through the first end along a second axis, parallel to the first axis, the area of the thrust grooves passing radially outward from the inner side surface of said hole, and a locking design, detachable way holding the connecting element is aligned in one line connecting the holes.



 

Same patents:

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: 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: 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: 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

Tooth bucket // 2184814
The invention relates to earth moving equipment, namely to shovel cyclic actions, and can be used in the mining industry

The invention relates to the use of work equipment excavators, and more specifically to methods of attachment of the teeth of the bucket straight shovel, dragline, reverse shovel

Tooth bucket // 2167980
The invention relates to earth-moving equipment, and more precisely to the teeth for excavator buckets, and most successfully can be applied in the design and manufacture of buckets of excavators designed to work with unsorted rocky soils

The invention relates to the mining industry and can be used to equip the working bodies of the mining and earthmoving machines

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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