Thrust wheel and mounting structure thereof

Abstract

The utility model belongs to the technical field of crawler belt walking mechanisms, and particularly relates to a thrust wheel and a mounting structure thereof, the thrust wheel comprises a rim, a first radial plate, a second radial plate and a wheel shaft sleeve, the rim and the wheel shaft sleeve are concentrically arranged, the first radial plate and the end face of the inner end of the rim are arranged at an interval to form a rim consumption section located on the inner side of the rim, and the second radial plate is arranged on the rim consumption section. The second radial plate is located on the outer side of the first radial plate. The wheel rim consumption section is reserved on the inner side of the thrust wheel and used for being matched with a crawler belt, abrasion of the wheel rim consumption section does not damage the wheel disk, and supporting of the wheel disk on the wheel rim in the radial direction can be effectively guaranteed, so that the bearing capacity of the thrust wheel can be guaranteed, and failure of the thrust wheel caused by the fact that the inner end of the wheel rim is abraded to damage the wheel disk is avoided. Therefore, the service life of the thrust wheel is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of crawler travel mechanisms, and particularly relates to a track roller and its installation structure. Background Art

[0002] The track rollers in the crawler travel mechanism are mainly used to bear the weight of the walking machinery and need to have good load-bearing capacity. To solve the problems of the large self-weight, low material utilization rate, and low production efficiency of the cast track rollers, Chinese Patent CN215706749U discloses a spin-forming track roller for crawler machines, which includes a spin-formed track roller body. A central cavity is arranged in the middle of the track roller body. A central shaft sleeve is fixedly installed in the middle of the track roller body. A sealing plate for encapsulating the central cavity is sleeved on the outer surface of the central shaft sleeve. A central shaft is rotatably installed in the middle of the central shaft sleeve; the track roller body 1 includes a hub body 11 and a support plate body 12 that are integrally connected to each other. A sealed connection is achieved between the connection of the support plate body 12 and the central shaft sleeve 2, and the connections of the sealing plate 3 with the central shaft sleeve 2 and the hub body 11 are integrally connected by welding, so that a closed cavity can be formed in the central cavity 13. Although this can prevent external sediment, water, and other impurities from entering the central cavity 13 and reduce the service life of the track roller, the support plate body 12 arranged far from the end cover 6 is extremely easy to press against and wear with the guiding and limiting components of the crawler during use. As the wear occurs, the transition section 14 of the support plate body 12 becomes thinner, which will cause a significant decrease in the wheel body strength of the track roller, thereby affecting the service life of the track roller. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a track roller and its installation structure, which can reduce the influence of the inner wheel body wear on the wheel body bearing capacity, thereby extending the service life of the track roller.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A track roller includes a rim, a first spoke, a second spoke, and a wheel shaft sleeve. The rim and the wheel shaft sleeve are concentrically arranged. The first spoke is spaced from the inner end face of the rim to form a rim consumption section inside the rim. The second spoke is located outside the first spoke.

[0006] An installation structure of a track roller, the wheel shaft sleeve of the track roller is rotatably connected to the shaft end of the wheel shaft, and the rim consumption section of the track roller is arranged adjacent to the midpoint of the axial length of the wheel shaft.

[0007] Compared with the prior art, the utility model has the following technical effects: a rim consumption section is reserved inside the idler wheel for cooperation with the crawler track. The wear of the rim consumption section will not damage the spoke plate, which can effectively ensure the support of the spoke plate in the radial direction of the rim, thus ensuring the load-bearing capacity of the idler wheel and avoiding the failure of the idler wheel caused by the wear of the inner end of the rim damaging the spoke plate, and further extending the service life of the idler wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The following briefly describes the content expressed in each drawing of this specification and the marks in the drawings:

[0009] Figure 1 is a schematic diagram of the prior art;

[0010] Figure 2 is the front view of the idler wheel of the utility model;

[0011] Figure 3 is Figure 2 the a-a cross-sectional view of

[0012] Figure 4 is the schematic diagram of the assembled state of the idler wheel of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following further details the specific embodiments of the utility model by describing the embodiments in conjunction with the drawings. For the convenience of narration, the side adjacent to the center of the vehicle or machine is defined as the inner side, and the side away from the center of the vehicle or machine is defined as the outer side.

[0014] As shown in the attached Figure 3 idler wheel, which includes a rim 10, a first spoke plate 20, a second spoke plate 30 and a wheel shaft sleeve 40. The rim 10 and the wheel shaft sleeve 40 are integrally cylindrical tubes, and the rim 10 and the wheel shaft sleeve 40 are concentrically arranged. The first spoke plate 20 and the second spoke plate 30 are transitionally connected between the rim 10 and the wheel shaft sleeve 40, and the two are arranged at intervals in the axial direction of the rim 10. Among them, the first spoke plate 20 is arranged at an interval from the inner end face of the rim 10 to form a rim consumption section 10a inside the rim 10, and the second spoke plate 30 is located outside the first spoke plate 20. When in use, as shown in the attached Figure 4 figure, the exposed rim consumption section 10a arranged inside the first spoke plate 20 is arranged adjacent to the limiting component of the crawler track. When the crawler track is deflected or the traveling mechanism turns, the rim consumption section 10a abuts and cooperates with the limiting component protruding from the middle of the crawler track. Even if the rim consumption section 10a is worn after long-term use, it will not damage the plate body of the first spoke plate 20, so as to ensure the strength of the idler wheel in the radial direction of the rim 10, and further improve the reliability of the idler wheel, making it have a longer service life.

[0015] This embodiment, as shown in the attached Figure 3As shown, the inner end of the rim 10 is radially folded inward to form a flange 11, which can effectively improve the strength of the inner end ring body of the rim 10. The angle α between the flange 11 and the generatrix of the rim 10 is an acute angle, that is, the angle through which the generatrix of the outer cylindrical surface of the rim 10 deflects towards the conical surface where the flange 11 is located and first coincides with the flange 11 is α. As attached Figure 4 As shown, in the preferred embodiment, the outer surface of the flange 11 fits with the adjacent wheel of the limiting component A arranged in the middle of the crawler belt.

[0016] In the preferred embodiment, the first spoke plate 20 is an annular plate, and the plate surface of the first spoke plate 20 is perpendicular to the hole core directions of the rim 10 and the wheel axle sleeve 40. The rim 10 is sleeved on the outer periphery of the first spoke plate 20, and the outer periphery of the first spoke plate 20 is welded to the inner pipe wall of the rim 10. The middle through hole of the first spoke plate 20 is sleeved on the wheel axle sleeve 40 and the two are welded together. In other embodiments, the first spoke plate 20 can also be a conical or frustum-shaped plate, but the outer periphery of the first spoke plate 20 needs to be arranged at intervals from the inner end of the rim 10.

[0017] In the preferred embodiment, the second spoke plate 30 is arranged flush with the outer end of the rim 10, that is, the outer periphery of the second spoke plate 30 is connected to the outer end face of the rim 10. In this way, the second spoke plate 30 can provide reliable support for the outer end ring surface of the rim 10, effectively maintain the shape of the outer end ring surface of the rim 10, and thus maintain the rolling walking ability of the idler wheel. In this embodiment, the second spoke plate 30 and the rim 10 are of an integrally formed structure, which can ensure the overall performance of the idler wheel disc. Compared with the welding connection between the outer periphery of the second spoke plate 30 and the rim 10, the connection between the two is more reliable, and it can also avoid the decrease in the bearing capacity of the wheel body caused by the failure of the connection between the two, and avoid the corrosion damage of the wheel body caused by sewage, sediment, etc. entering the inner chamber of the wheel body from the connection gap. The middle through hole of the second spoke plate 30 is sleeved on the wheel axle sleeve 40 and the two are welded together to realize the positioning and installation of the second spoke plate 30 and the rim 10. In this embodiment, the plate surface of the second spoke plate 20 is perpendicular to the hole core directions of the rim 10 and the wheel axle sleeve 40. In other embodiments, the second spoke plate 30 can also be a conical or frustum-shaped plate.

[0018] In this embodiment, the plate thickness of the first spoke plate 20 located on the outer side of the wheel body is smaller than the plate thickness of the second spoke plate 30 located on the inner side of the wheel body. On the one hand, the flange 11 provided at the inner end of the rim 10 can also improve the stability of the shape of the inner end ring surface of the rim 10. On the other hand, the rim 10 and the second spoke plate 30 are integrally spin-formed components, and the two are of the same material and should have the same or similar thickness. The first spoke plate 20 can be made of a material with higher strength or by stamping, and thus a thinner plate can be used.

[0019] To improve the production efficiency of the idler wheel body, as attached Figure 3As shown, a boss 41 is provided on the outer peripheral surface of the middle section of the axle sleeve 40. The first spoke plate 20 and the second spoke plate 30 are respectively placed on both sides of the boss 41 and abut against the stepped surface of the boss 41, so as to realize the positioning and installation of the two spoke plates in the axial direction of the axle sleeve 40.

[0020] The installation structure of the above-mentioned track roller is as shown in the appendix Figure 4 As shown, the axle sleeve 40 of the track roller is rotatably connected to the shaft end of the axle 50 through a bearing, and the worn section 10a of the track roller rim is located inside the axle 50. That is, the track roller is arranged in the order of the worn section 10a of the rim, the first spoke plate 20, and the second spoke plate 30 from inside to outside. The worn section 10a of the rim and the first spoke plate 20 are arranged at the outer end away from the axle 50 and adjacent to the middle of the axial length of the axle 50. The second spoke plate 30 of the track roller is arranged adjacent to the shaft end of the axle 50 to which it is installed. In this way, during use, the overall cylindrical outer surface of the rim 10 forms a rolling fit with the inner belt surface of the crawler. The worn section 10a of the rim is arranged adjacent to the limiting component A protruding from the middle of the crawler. The abutting fit between the worn section 10a of the rim and the limiting component A can effectively prevent the crawler from displacing and disengaging along the direction of the track roller core. Moreover, the worn section 10a of the rim is arranged at an interval from the first spoke plate 20, which can ensure the integrity of the plate body of the first spoke plate 20, thus guaranteeing the reliability of the support strength of the track roller in the radial direction.

Claims

1. A track roller, comprising a wheel rim (10), a first spoke plate (20), a second spoke plate (30) and a wheel axle sleeve (40), wherein the wheel rim (10) and the wheel axle sleeve (40) are arranged concentrically, and characterized in that: The first spoke plate (20) is arranged at a distance from the inner end surface of the wheel rim (10) to form a wheel rim consumption section (10a) located on the inner side of the wheel rim (10), and the second spoke plate (30) is located on the outer side of the first spoke plate (20).

2. The track roller according to claim 1, characterized in that: The inner end of the wheel rim (10) is radially folded inward to form a flange (11), and the included angle α between the flange (11) and the generatrix of the wheel rim (10) is an acute angle.

3. The track roller according to claim 1, characterized in that: The first spoke plate (20) is a circular ring plate, the wheel rim (10) is sleeved on the outer periphery of the first spoke plate (20), and the outer periphery of the first spoke plate (20) is welded to the inner tube wall of the wheel rim (10), and the middle through hole of the first spoke plate (20) is sleeved on the wheel axle sleeve (40), and the two are welded to each other.

4. The track roller according to claim 1, characterized in that: The second spoke plate (30) is arranged flush with the outer end of the wheel rim (10), and a hole in the middle of the second spoke plate (30) is sleeved on the wheel axle sleeve (40), and the two are welded together.

5. The track roller according to claim 3, characterized in that: The plate surface of the first spoke plate (20) is perpendicular to the hole core direction of the wheel rim (10) and the wheel axle sleeve (40).

6. The track roller according to claim 4, characterized in that: The plate surface of the second spoke plate (30) is perpendicular to the hole core direction of the wheel rim (10) and the wheel axle sleeve (40).

7. The track roller according to claim 4, characterized in that: The second spoke plate (30) and the wheel rim (10) are an integrally formed structure.

8. The track roller according to claim 1, characterized in that: The plate thickness of the first spoke plate (20) is smaller than the plate thickness of the second spoke plate (30).

9. The track roller according to claim 1, characterized in that: A boss (41) is provided on the outer peripheral surface of the middle section of the axle sleeve (40), and the first spoke plate (20) and the second spoke plate (30) are respectively disposed on both sides of the boss (41) and abut against the step surface of the boss (41).

10. The mounting structure of the track roller according to any one of claims 1 to 9, characterized in that: The wheel shaft sleeve (40) of the supporting wheel is rotatably connected to the shaft end of the wheel shaft (50), and the wheel rim consumption section (10a) of the supporting wheel is arranged adjacent to the middle part of the wheel shaft (50) in the axial length direction.

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