CN212654445U - Improved generation guide wheel end cover subassembly - Google Patents

Abstract

The utility model belongs to the technical field of engineering machine tool's guide wheel and specifically relates to an improved generation guide wheel end cover subassembly, including the guide wheel body the both ends of guide wheel body are respectively through bolt fastening sealing connection has end cover subassembly, each the bolt passes in proper order each bolt hole on the end cover subassembly, the guide shaft runs through in proper order the guide wheel body and two the center of end cover subassembly is sealed to be stretched out, the end cover subassembly includes the end cover that is provided with a plurality of bolt hole on the outer terminal surface the end cover orientation terminal surface one side of guide wheel body is equipped with an alloy gasket and corresponding be provided with a plurality of pinhole along its even interval of circumference on the end cover, link to each other through a split pin cooperation fastening in two pinholes of coaxial setting respectively. The utility model discloses well end cover passes through split pin with the copper pad and is connected formula structure as an organic whole, eliminates the unsteady clearance of copper pad, can evenly bear the weight of the axial force, has eliminated the early fault hidden danger of components of a whole that can function independently structure.

Description

Improved generation guide wheel end cover subassembly

Technical Field

The utility model belongs to the technical field of engineering machine tool's guide wheel and specifically relates to an improved generation guide wheel end cover subassembly.

Background

The crawler-type traveling device has large grounding area, has better trafficability to muddy, swamp and soft pavements, and is widely applied to a traveling system of engineering machinery. The guide wheels play a role in guiding, the correct winding of the crawler belt can be guaranteed, and meanwhile the guide wheels are moved by the tensioning device to adjust the tension degree of the crawler belt.

In the existing structure, a guide wheel shaft penetrates through the inside of a wheel hub, end covers are mounted at two ends of the wheel hub, the end covers are connected with the guide wheel body through bolts, and a copper pad is arranged between the guide wheel shaft and the end covers in a floating manner and is of a mutually independent split structure with the end covers (in the prior art, as shown in fig. 1). In the chassis walking device of the crawler-type engineering machinery, the guide wheels have a guiding function and bear large impact load when passing through an undulating road surface. The caterpillar track sections slide on the tread of the guide wheel, the guide wheel ensures that the caterpillar track is wound in the correct direction when walking, and the caterpillar track keeps a certain tension degree. The end covers are positioned at two ends of the guide wheel and connected with the guide wheel body through bolts, the end part of the end cover at the inner end of the wheel body is contacted with the copper pad to bear the axial force transmitted by the copper pad, and a floating sealing structure is arranged in each end cover to play a role in sealing.

The copper pad contacts with guide wheel axle and end cover, and when the running gear passed through the undulant road surface, the great impact load was born to the guide wheel, transmitted the guide wheel axle with axial force through the copper pad. Because the copper pad has axial clearance and radial clearance in the guide wheel, under the effect of long-term impact load, easily produce deformation, inhomogeneous wearing and tearing scheduling problem to arouse early failure. Meanwhile, the bolt is installed outside the end cover, the leakage end outside the bolt head is in a semi-open design (in the prior art, as shown in fig. 2), the bolt is not protected sufficiently, and under the heavy-load working conditions of mines and the like, impact load of foreign matters such as external stones collides with the bolt head, so that the hidden danger of bolt loosening exists.

In addition, the technical research personnel of the company have already preliminarily solved the above problems, that is, the end cover assembly of the guide wheel disclosed in patent document No. 201910766660.9 is fixedly connected between the end cover and the gasket by friction welding, although the problems can be preliminarily solved, welding equipment must be used for welding during subsequent early construction and assembly, the operation is complicated and has certain difficulty, and many problems still exist during subsequent maintenance.

Therefore, the present application can solve the above problems more favorably by further improving the present application based on the above-mentioned patent documents.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned copper pad inhomogeneous wearing and tearing and cause early trouble to and there is one of the technical problem of the not hard up hidden danger of bolt, the technical scheme who adopts is: an improved guide wheel end cover component comprises a guide wheel body and a guide wheel shaft, wherein two ends of the guide wheel body are respectively fixedly and hermetically connected with an end cover component through bolts, each bolt sequentially penetrates through each bolt hole on the end cover component, the guide wheel shaft sequentially penetrates through the centers of the guide wheel body and the two end cover assemblies and extends out in a sealing manner, the end cover assembly comprises an end cover, the outer end face of the end cover assembly is provided with a plurality of bolt holes, an alloy gasket is arranged on one side of the end surface of the end cover facing the guide wheel body, a plurality of pin holes are uniformly arranged on the alloy gasket and the corresponding end cover at intervals along the circumference of the alloy gasket, the alloy gasket and the two corresponding pin holes coaxially arranged on the end cover are respectively matched and fastened through a split pin, and the alloy gasket is connected with the corresponding end cover through the split pin to form an integrated structure.

And a bearing bush is arranged at the contact part of the guide wheel body and the guide wheel shaft in a matching way.

The alloy gasket is connected with the corresponding end cover through the split pin and then is of an integrated structure, so that the axial force of the guide wheel can be uniformly borne, and the problems of deformation and abnormal abrasion of the floating gasket under the condition of impact heavy load are solved.

Preferably, the cotter pin is automatically tensioned and used to abut each of the pin bore sidewalls.

Preferably, the number of the cotter pins is 4, and the cotter pins are made of high manganese steel.

The split pin ground opening has high structural strength, good elasticity, good adaptability with the end cover pin hole and the alloy gasket pin hole, good assembly manufacturability and solves the over-constraint problem when the alloy gasket is connected with the end cover.

Preferably, the end of the cotter pin is recessed into the inner surface of the alloy gasket and the abrasion amount is reserved.

Can effectually prevent that split pin and axle head from interfering.

Preferably, the alloy gasket takes a steel gasket as a base body, and copper alloy is sintered on the surface of the steel gasket; the thickness of the copper alloy is 0.7-1.2mm, and the copper alloy type gasket is poured integrally relatively.

Ensuring high strength of the matrix and low material cost.

Preferably, the steel pad is made of high-quality carbon steel, 4 oil grooves are formed in the surface of the copper alloy in parallel, the cross section of each oil groove is rectangular, and the depth of each oil groove is smaller than the thickness of the copper alloy layer.

The oil groove that sets up can guarantee that the oil mass is good, can effectively guarantee inside lubrication.

Preferably, each bolt hole on the end cover is uniformly distributed with a protection groove.

The protective groove can be good in bolt protection performance, and the hidden danger of bolt looseness caused by external impact is eliminated.

Preferably, each of the protection grooves is circular in shape, and each of the protection grooves forms a closed structure with a head of the bolt at a corresponding position.

Preferably, the end cover assembly is used for sealing and transferring load, an O-ring groove is formed in a contact plane of the end cover assembly corresponding to the guide wheel body, and an O-ring is clamped inside the O-ring groove.

Preferably, a floating seal assembly is mounted on the outer side wall of the contact part of each end cover and the guide wheel shaft, and the floating seal assembly is in interference connection with the guide wheel shaft.

The beneficial effects of the utility model are embodied in: the utility model discloses well end cover passes through split pin with the copper pad and is connected formula structure as an organic whole, eliminates the unsteady clearance of copper pad, can evenly bear the weight of the axial force, has eliminated the early fault hidden danger of components of a whole that can function independently structure. Meanwhile, the position of the bolt head outside the end cover assembly is of a closed structure, so that the hidden danger of bolt loosening caused by external foreign matter impact can be eliminated.

1. The integral type structure that the end cover subassembly constitutes for end cover, alloy gasket, split pin has replaced the floating components of a whole that can function independently structure of copper pad with the end cover, has eliminated the radial clearance of copper pad, and the end cover subassembly can evenly bear the impact load of guide wheel, has eliminated the gasket deformation and the eccentric wear hidden danger of current structure, has improved the life of guide wheel.

2. The alloy gasket is steel pad surface sintering copper alloy, and current full copper gasket of pouring relatively, the base member intensity is high and with low costs, and the alloy gasket is opened has 4 lubricating oil grooves of parallel distribution, has guaranteed lubricated oil mass that leads to, has better antifriction lubricated effect.

3. The split pin is made of high manganese steel, the elasticity and the strength are high, when the end cover and the alloy gasket are connected, the split structure can be automatically adjusted according to the size of the pin hole, and the adaptability is good.

4. The end cover assembly is provided with a closed protective groove, so that the bolt is well protected, and the hidden danger of bolt loosening caused by external impact is eliminated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.

Fig. 1 is a schematic view of a split structure of an end cap and a gasket in the prior art.

FIG. 2 is a schematic diagram of the prior art end cap external mounting bolt location.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic perspective view of the end cap assembly of the present invention.

Fig. 6 is a schematic view of the protection groove structure of the end cover assembly of the present invention.

Fig. 7 is a schematic view of the alloy gasket of the present invention.

In the figures, 1-guide axle; 2-floating a sealing cover; 3-floating seal assembly; 4-a bolt; 5-a guide wheel body; 6-bearing bush; 7-an end cap assembly; 8-O-shaped rings; 9-end cap; a 10-alloy shim; 11-a cotter pin; 12-O-ring groove; 13-a steel pad; 14-copper alloy; 15-oil groove; 16-shield bath.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 7, an improved guide wheel end cover assembly 7 comprises a guide wheel body 5 and a guide wheel shaft 1, wherein end cover assemblies 7 are fixedly and hermetically connected to two ends of the guide wheel body 5 through bolts 4, each bolt 4 sequentially passes through each bolt 4 hole on the end cover assembly 7, the guide wheel shaft 1 sequentially passes through centers of the guide wheel body 5 and the two end cover assemblies 7 and extends out in a sealing manner, the end cover assembly 7 comprises an end cover 9 provided with a plurality of bolt 4 holes on an outer end face, an alloy gasket 10 is arranged on one side of the end face of the end cover 9 facing the guide wheel body 5, a plurality of pin holes are uniformly arranged on the alloy gasket 10 and the corresponding end cover 9 along the circumference thereof at intervals, the alloy gasket 10 is fixedly connected with the two coaxially arranged pin holes on the corresponding end cover 9 through an open pin 11 respectively, the alloy gasket 10 is connected with the corresponding end cover 9 through the cotter pin 11 to form an integral structure.

A bush 6 is fitted to a contact portion between the guide wheel body 5 and the guide wheel shaft 1.

After the alloy gasket 10 is connected with the corresponding end cover 9 through the split pin 11 to form an integral structure, the axial force of the guide wheel shaft 1 can be uniformly borne, and the problems of deformation and abnormal abrasion of the floating type gasket under the impact heavy-load working condition are solved.

Preferably, the split pin 11 is automatically tensioned and used to abut against each of the pin bore side walls.

Preferably, the number of the cotter 11 is 4, and the cotter 11 is made of high manganese steel.

The split pin 11 has high structural strength and good elasticity, has good adaptability with the end cover 9 pin hole and the alloy gasket 10 pin hole, has good assembly manufacturability, and solves the over-constraint problem when the alloy gasket 10 is connected with the end cover 9.

Preferably, the end of the cotter pin 11 is recessed into the inner surface of the alloy shim 10 and reserves the amount of wear.

The cotter pin 11 can be effectively prevented from interfering with the shaft end.

Preferably, the alloy gasket 10 takes a steel gasket 13 as a base body and copper alloy 14 is sintered on the surface; the thickness of the copper alloy 14 is 0.7-1.2mm, and the copper alloy 14-form gasket is cast integrally relatively.

Ensuring high strength of the matrix and low material cost.

Preferably, the steel pad 13 is made of high-quality carbon steel, 4 oil grooves 15 are formed in the surface of the copper alloy 14 and distributed in parallel, the cross section of each oil groove 15 is rectangular, and the depth of each oil groove 15 is smaller than the thickness of the layer of the copper alloy 14.

The oil groove 15 that sets up can guarantee that the oil mass is good, can effectively guarantee inside lubrication.

Preferably, a protective groove 16 is uniformly distributed at each hole of the bolt 4 on the end cover 9.

The protective groove 16 can well protect the bolt 4 and eliminate the hidden danger of loosening the bolt 4 caused by external impact.

Preferably, each of the protection slots 16 has a circular shape, and each of the protection slots 16 forms a closed structure with the head of the bolt 4 at a corresponding position.

Preferably, the end cover assembly 7 is used for sealing and transferring load, an O-ring groove 12 is formed in a contact plane of the end cover assembly 7 corresponding to the guide wheel body 5, and an O-ring 8 is clamped inside the O-ring groove 12.

Preferably, a floating seal assembly 3 is mounted on the floating seal cover 2 on the outer side wall of the contact part of each end cover 9 and the guide wheel shaft 1, and the floating seal assembly 3 is in interference connection with the guide wheel shaft 1.

The assembling process comprises the following steps:

1. the end cover 9 is manufactured and machined and formed by adopting a casting, forging or round steel direct machining mode.

2. The high-quality carbon structural steel plate is used as a substrate, after surface treatment, the copper alloy 14 is sintered on the surface of one side at high temperature, and the thickness of the copper alloy 14 layer can be set to be 0.7-1.2mm according to performance requirements.

3. And (3) cutting and blanking the steel plate sintered with the copper alloy 14 in the step (2), and processing the end face of the excircle, the inner hole and the pin hole.

4. The surface of the end cover 9 is pressed with a cotter 11 and an alloy gasket 10.

5. After the guide wheel body 5, the guide wheel shaft 1, the floating seal ring, the floating seal cover 2, the O-shaped ring 8 and the like are prepared, all relevant parts are assembled.

The utility model provides a guide wheel, 9 formula structures as an organic whole of guide wheel end cover comprise end cover 9, alloy gasket 10, split pin 11. When the guide wheel receives external impact load, the end cover assembly 7 can evenly bear the axial force transmitted by the guide wheel, and the problem of uneven wear of a copper pad during impact and heavy load is solved. Meanwhile, the protective groove 16 is formed in the position, connected with the bolt 4, outside the end cover 9, so that the bolt 4 is well protected, and the hidden danger that external foreign matters impact the bolt 4 to loosen is eliminated.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification; to those skilled in the art, any alternative improvements or changes made to the embodiments of the present invention are all within the scope of the present invention.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims (10)

1. An improved guide wheel end cover assembly characterized in that: the guide wheel comprises a guide wheel body and a guide wheel shaft, wherein end cover assemblies are respectively connected to two ends of the guide wheel body through bolts in a fixed and sealed mode, each bolt sequentially penetrates through each bolt hole in each end cover assembly, the guide wheel shaft sequentially penetrates through the guide wheel body and the centers of the two end cover assemblies and extends out in a sealed mode, each end cover assembly comprises an end cover with a plurality of bolt holes formed in the outer end face, an alloy gasket is arranged on one side, facing the end face of the guide wheel body, of each end cover, a plurality of pin holes are evenly formed in the alloy gasket and the corresponding end cover along the circumference of the end cover at intervals, the alloy gasket is matched and fastened with the two corresponding coaxially arranged pin holes in the end cover through split pins respectively, and the alloy gasket is connected with the corresponding end cover through the split pins to form an integrated structure.

2. An improved guide wheel end cap assembly as defined in claim 1, wherein: the split pin can be automatically tensioned and used for abutting against the side wall of each pin hole.

3. An improved guide wheel end cover assembly as defined in claim 2, wherein: the number of the cotter pins is 4, and the cotter pins are made of high manganese steel.

4. An improved guide wheel end cap assembly according to claim 3, wherein: the end part of the cotter pin is recessed into the inner surface of the alloy gasket and the abrasion loss is reserved.

5. An improved guide wheel end cap assembly according to claim 4, wherein: the alloy gasket takes a steel gasket as a substrate and copper alloy is sintered on the surface of the steel gasket; the thickness of the copper alloy is 0.7-1.2mm, and the copper alloy type gasket is poured integrally relatively.

6. An improved guide wheel end cap assembly as defined in claim 5, wherein: the steel pad is made of high-quality carbon steel, 4 oil grooves are formed in the surface of the copper alloy in parallel, the cross section of each oil groove is rectangular, and the depth of each oil groove is smaller than the thickness of the copper alloy layer.

7. An improved guide wheel end cap assembly according to claim 6, wherein: and protective grooves are uniformly distributed at the bolt holes on the end cover.

8. An improved guide wheel end cap assembly as defined in claim 7, wherein: each protective groove is circular in shape, and a closed structure is formed by each protective groove and the head of the bolt at the corresponding position.

9. An improved guide wheel end cap assembly according to claim 8, wherein: the end cover assembly is used for playing a role in sealing and transferring load, an O-shaped ring groove is formed in the contact plane of the end cover assembly and the guide wheel body, and an O-shaped ring is clamped inside the O-shaped ring groove.

10. An improved guide wheel end cap assembly as defined in claim 9, wherein: and a floating seal assembly is arranged at the position of a floating seal cover on the outer side wall of the contact part of each end cover and the guide wheel shaft, and the floating seal assembly is in interference connection with the guide wheel shaft.

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