CN219237201U - Track thrust wheel - Google Patents

Abstract

The utility model provides a track roller, which comprises a wheel shaft, an end cover, a high polymer material sliding bearing and a shell sleeved on the outer side of the wheel shaft, wherein the wheel shaft is fixedly connected to a track bracket through the end cover, the high polymer material sliding bearing is sleeved on the wheel shaft and positioned between the wheel shaft and the shell, the high polymer material sliding bearing comprises a bearing, a limiting plate and a limiting piece which are arranged on the bearing, the limiting plate is matched with the end surface of the shell to limit the axial position of the bearing on the wheel shaft, a clamping groove with a shape matched with the limiting piece is arranged on the shell, the clamping groove is matched with the limiting piece to realize the synchronous rotation of the bearing and the shell relative to the wheel shaft, and the high polymer material sliding bearing can deform to drop under the influence of temperature.

Description

Track thrust wheel

Technical Field

The utility model relates to parts of a tracked vehicle, in particular to a track roller.

Background

The track roller sliding bearing needs to bear larger load, impact and friction during operation, and has severe working conditions, and is usually cast integrally by tin bronze or cast by steel backing copper bimetal. The cost of the copper material of the sliding bearing integrally cast by tin bronze is too high to be suitable for mass adoption. The steel backing copper bimetal cast sliding bearing takes a steel backing as a matrix, sintered thin-wall copper alloy is taken as a wear-resistant layer, and one end is welded with a flange. The bimetal sliding bearing has the advantages of large bearing capacity, small cold and hot deformation, strong shock resistance, better antifriction and wear resistance, and better fatigue resistance when being acted by variable load. However, the bimetal sliding bearing is sintered with a layer of thin-wall copper alloy on the surface, so that under the working condition that a complete lubricating oil film cannot be formed, rapid abrasion can occur to fail, and due to the complex working environment of engineering machinery, if a sealing ring fails, the oil leakage can cause abnormal rapid abrasion of the bimetal copper alloy bearing, so that the thrust wheel cannot be normally used, and meanwhile, the maintenance cost is increased. Some of the thrust wheel sliding bearings are made of high polymer materials, and the thrust wheel sliding bearings have the advantages of good wear resistance, good impact resistance, easy thermoforming and low manufacturing cost. However, during operation, there may be a problem that the bearing is subjected to temperature and the shell of the falling thrust wheel is worn seriously.

Disclosure of Invention

The utility model aims to provide a crawler track roller which is low in manufacturing cost and reliable in use.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a track roller, including the shaft, the end cover, macromolecular material slide bearing and cover locate the casing in the shaft outside, the shaft passes through end cover fixed connection on the track support, macromolecular material slide bearing cover locates epaxial and is located between shaft and the casing, macromolecular material slide bearing includes the bearing, limiting plate and the locating part of setting on the bearing, limiting plate and casing terminal surface cooperation limit bearing are at epaxial axial position, be equipped with the draw-in groove that the shape suits with the locating part on the casing, the draw-in groove realizes bearing and the synchronous rotation of casing relative shaft with the locating part cooperation.

Further, the limiting plate is perpendicular to the bearing, and the limiting piece is located at the joint of the limiting plate and the bearing.

Further, the limiting pieces are provided with a plurality of limiting pieces and are uniformly distributed at intervals along the circumference of the limiting plate.

Further, the limiting piece is a triangular limiting piece or a cylindrical limiting piece or a square limiting piece.

Further, the bearing, the limiting plate and the limiting piece are integrally arranged in an injection molding mode.

Further, the bearing and the wheel axle are in clearance fit.

Further, be equipped with the oil groove that link up on the macromolecular material slide bearing, link up the oil groove and including locating the first oil groove on the limiting plate and locating the second oil groove on the bearing, first oil groove is located the limiting plate towards on the friction surface of end cover and runs through the radial both ends of limiting plate, and the second oil groove is located the inner wall of bearing and runs through the axial both ends of bearing, first oil groove and second oil groove intercommunication.

Further, the first oil groove is provided with a plurality of and evenly distributed and spaced along the circumference of the limiting plate.

Further, the second oil groove adopts a 8-shaped oil groove.

After the technical scheme is adopted, the utility model has the following advantages:

1. compared with the traditional bimetal bearing, the utility model has the characteristics of low manufacturing cost, light density, high bearing strength, good wear resistance and the like, is convenient for positioning and mounting the bearing, can prevent the bearing from axially moving on the wheel shaft, realizes synchronous rotation of the bearing and the shell relative to the wheel shaft by matching the clamping groove with the limiting piece, can drive the bearing to synchronously rotate when the shell rotates under the action of the crawler belt, and can be deformed to drop due to the influence of temperature simultaneously.

2. The limiting piece is arranged at the joint of the limiting plate and the bearing, so that the joint area of the limiting piece, the limiting plate and the bearing can be increased, the joint strength of the limiting piece is improved, and the use reliability of the limiting piece is improved; meanwhile, the limiting piece is arranged at the joint of the limiting plate and the bearing, so that the clamping groove is positioned at the bending part formed by the end face of the shell and the inner hole, and the processing is simple and convenient.

3. Through setting up a plurality of locating parts and a plurality of draw-in groove cooperation, can further promote bearing and casing complex stability, further guarantee that the bearing can not drop from the casing.

4. And the limiting piece with regular shape is adopted, so that the forming is convenient, and the processing of the clamping groove is also convenient.

5. The bearing, the limiting plate and the limiting piece are integrally arranged in an injection molding mode, the integral structural strength of the high polymer material sliding bearing is improved, and the processing and molding are more convenient.

6. The bearing and the wheel axle are in clearance fit, so that the high polymer material sliding bearing almost has no abrasion to the wheel axle in the use process, and the long service life can be maintained even under the working condition of oil leakage or oil free.

7. Through the arrangement of the first oil groove, the lubricating oil inside and outside the bearing is ensured to fully circulate, the effects of lubrication and heat dissipation are achieved, meanwhile, the friction force between the limiting plate and the end cover is reduced, and the abrasion is reduced; through setting up the second oil groove, reduce the frictional force between bearing and the shaft, reduce wearing and tearing. By communicating the first oil groove and the second oil groove, the lubricating oil can circulate.

8. Through setting up a plurality of first oil grooves, promote lubrication and radiating effect, reduce polymer material slide bearing's wearing and tearing.

9. The second oil groove adopts 8 font oil groove for the second oil groove sets up around the bearing inner wall, can make the whole bearing inner wall of oil lubrication more limit, reduces the wearing and tearing between bearing and the shaft.

Drawings

The utility model is further described below with reference to the accompanying drawings:

fig. 1 is a cross-sectional view of a track roller according to an embodiment of the present utility model.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic structural view of a polymer sliding bearing in the track roller according to an embodiment of the present utility model.

Fig. 4 is a side view of a housing in the track roller according to an embodiment of the utility model.

Fig. 5 is a side view of a polymer sliding bearing in the track roller according to an embodiment of the present utility model.

Fig. 6 is an expanded schematic view of an inner surface of a polymer sliding bearing in the track roller according to an embodiment of the present utility model.

Fig. 7 is a side view of a polymer sliding bearing in a track roller according to a second embodiment of the present utility model.

The names of the components marked in the figure are as follows:

100. a wheel axle; 200. an end cap; 300. a high molecular material sliding bearing; 310. a bearing; 311. a second oil groove; 320. a limiting plate; 321. a first oil groove; 330. a limiting piece; 400. a housing; 410. a clamping groove.

Detailed Description

The utility model will be further described with reference to the drawings and the specific examples. It is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, as used herein, are merely based on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the devices/elements referred to must have or be configured and operated in a particular orientation and therefore should not be construed as limiting the utility model.

Embodiment one:

as shown in fig. 1 to 6, the present utility model provides a track roller, which comprises a wheel axle 100, an end cover 200, a polymer material sliding bearing 300, and a housing 400 sleeved outside the wheel axle 100, wherein the wheel axle 100 is fixedly connected to a track support through the end cover 200, so that the wheel axle and the end cover can not rotate, the polymer material sliding bearing 300 is sleeved on the wheel axle 100 and is located between the wheel axle 100 and the housing 400. The macromolecular material slide bearing 300 includes bearing 310, limiting plate 320 and locating part 330 of setting on bearing 310, limiting plate 320 and casing 400 terminal surface cooperation limit bearing 310 in the epaxial axial position of shaft 100, through setting up the limiting plate, the location installation of bearing of being convenient for, and can prevent the bearing axial float on the shaft, be equipped with the draw-in groove 410 that shape and locating part 330 suited on the casing 400, draw-in groove 410 and locating part 330 cooperation realize bearing 310 and the synchronous rotation of casing 400 relative shaft 100, the casing takes place when rotating under the track effect, can drive macromolecular material slide bearing synchronous rotation, simultaneously because of under the temperature influence, macromolecular material slide bearing can take place to warp and lead to droing, through setting up locating part and draw-in groove cooperation, can avoid the bearing to drop from the casing inner wall and cause the bearing outer peripheral face to bump between the casing and take place wearing and tearing, the problem that macromolecular material slide bearing drops and cause, prolong macromolecular material slide bearing's life, the reliability of track thrust wheel use is promoted.

In this embodiment, the limiting plate 320 is perpendicular to the bearing 310, and the limiting member 330 is located at the connection between the limiting plate 320 and the bearing 310. The limiting piece is arranged at the joint of the limiting plate and the bearing, so that the joint area of the limiting piece, the limiting plate and the bearing can be increased, the joint strength of the limiting piece is improved, and the use reliability of the limiting piece is improved; meanwhile, the limiting piece is arranged at the joint of the limiting plate and the bearing, so that the clamping groove is positioned at the bending part formed by the end face of the shell and the inner hole, and the processing is simple and convenient.

The limiting piece 330 is provided with a plurality of and a plurality of limiting pieces 330 along the circumference equipartition interval setting of limiting plate 320, through setting up a plurality of limiting pieces and a plurality of draw-in groove cooperation, can further promote bearing and casing complex stability, further guarantee that the bearing can not drop from the casing. In this embodiment, the number of the limiting members is 2.

It will be appreciated that the stop members may be provided with 1, 3, 4, etc.

In this embodiment, the locating part is square locating part, and the shape is regular, and the shaping of being convenient for also is convenient for the processing of draw-in groove simultaneously.

It will be appreciated that the stop may be a cylindrical stop.

It will be appreciated that the stop may be a triangular stop.

The bearing 310, the limiting plate 320 and the limiting piece 330 are integrally arranged in an injection molding mode, the overall structural strength of the high polymer material sliding bearing is improved, and the processing and molding are more convenient.

The bearing 310 and the axle 100 are arranged in a clearance fit manner, so that the sliding bearing made of high polymer materials hardly wears the axle in the use process, and the service life can be kept even under the working condition of oil leakage or oil free.

The high polymer material sliding bearing 300 is provided with a through oil groove, the through oil groove comprises a first oil groove 321 arranged on the limiting plate 320 and a second oil groove 311 arranged on the bearing 310, the first oil groove 321 is positioned on the friction surface of the limiting plate 320 facing the end cover 200 and penetrates through two ends of the limiting plate 320 in the radial direction, and by arranging the first oil groove, the lubricating oil inside and outside the bearing is ensured to sufficiently circulate, so that the effects of lubrication and heat dissipation are achieved, meanwhile, the friction force between the limiting plate and the end cover is reduced, and the abrasion is reduced; the second oil grooves 311 are positioned on the inner wall of the bearing 310 and penetrate through the two ends of the bearing 310 in the axial direction, and the friction force between the bearing and the wheel shaft is reduced and the abrasion is reduced by arranging the second oil grooves; the first oil groove 321 and the second oil groove 311 communicate such that the lubricating oil can circulate.

The first oil grooves 321 are provided with a plurality of first oil grooves and are uniformly distributed along the circumference of the limiting plate 320 at intervals, so that lubrication and heat dissipation effects are improved, and abrasion of the high polymer material sliding bearing is reduced. In this embodiment, the first oil groove is provided with 4, and 4 first oil grooves are cross-shaped.

It will be appreciated that the first oil groove may also be provided with 1, 2, 3, 5 etc.

The second oil groove 311 adopts the 8-shaped oil groove for the second oil groove sets up around the bearing inner wall, can make the whole bearing inner wall of oil lubrication to a greater extent, reduces the wearing and tearing between bearing and the shaft.

Embodiment two:

the main difference between this embodiment and the first embodiment is that the first oil groove is provided in a different manner.

As shown in fig. 7, in this embodiment, the first oil grooves 321 are disposed in parallel to form parallel oil grooves, and the first oil grooves only need to penetrate through two ends of the limiting plate 320 in the radial direction.

In addition to the above preferred embodiments, the present utility model has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the utility model, which is defined in the appended claims.

Claims (9)

1. The utility model provides a track roller, includes shaft, end cover, macromolecular material slide bearing and the casing of cover outside the shaft, and the shaft passes through end cover fixed connection on the track support, and macromolecular material slide bearing cover is located epaxial and is located between shaft and the casing, its characterized in that, macromolecular material slide bearing includes the bearing, sets up limiting plate and the locating part on the bearing, limiting plate and the axial position of casing terminal surface cooperation restriction bearing on the shaft, is equipped with the draw-in groove that the shape suits with the locating part on the casing, and the draw-in groove realizes bearing and the relative shaft synchronous rotation of casing with the cooperation of locating part.

2. A track roller according to claim 1, wherein the limiting plate is arranged perpendicular to the bearing and the limiting member is located at the junction of the limiting plate and the bearing.

3. The track roller of claim 1, wherein the spacing member is provided in a plurality of spaced apart locations along the circumference of the spacing plate.

4. A track roller according to claim 1, wherein the stop is a triangular stop or a cylindrical stop or a square stop.

5. A track roller according to claim 1, wherein the bearing, the stop plate and the stop member are integrally injection molded.

6. A track roller according to claim 1, wherein the bearings and axle are provided in a clearance fit.

7. The track roller according to claim 1, wherein the high polymer material sliding bearing is provided with a through oil groove, the through oil groove comprises a first oil groove arranged on the limiting plate and a second oil groove arranged on the bearing, the first oil groove is arranged on a friction surface of the limiting plate facing the end cover and penetrates through two ends of the limiting plate in the radial direction, the second oil groove is arranged on an inner wall of the bearing and penetrates through two ends of the bearing in the axial direction, and the first oil groove is communicated with the second oil groove.

8. The track roller of claim 7, wherein the first oil groove is provided with a plurality of grooves and is uniformly spaced along the circumference of the limiting plate.

9. A track roller according to claim 7, wherein the second oil groove is a figure 8 groove.

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