Thrust wheel

Abstract

The utility model belongs to the technical field of crawler belt walking mechanisms, and particularly relates to a thrust wheel which is characterized in that the outer opening edge of an annular plate-shaped spoke is connected with the middle part of a wheel rim in the axial direction, the inner opening edge of the annular plate-shaped spoke is connected with the middle part of a wheel shaft sleeve in the axial direction, and the wheel rim and the wheel shaft sleeve are tubular as a whole. According to the thrust wheel body, the annular plate-shaped spoke can stably and reliably provide support for the rim and transmit loads in the minimum path, even if the rim is partially out of round, the thrust wheel body still has certain bearing capacity, and the stability and the reliability of the thrust wheel body structure are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tracked walking mechanism technical field, especially relate to a supporting wheel. BACKGROUND

[0002] The supporting wheel in the tracked walking mechanism is used for supporting the load of the machine and guiding and limiting the track. The prior application CN217918175U of the applicant discloses a supporting wheel, the whole of the spoke is conical ring shape, and the outer opening is connected with the side end face of the rim along the spinning transition, the inner opening of the spoke is set in the middle of the wheel shaft sleeve in the axial direction and is welded as a whole. The rim of the supporting wheel is connected with the spoke, and although this structure is convenient for the production and processing of the wheel body, in actual application, once the rim is deformed and out of round due to extrusion of the road protrusions, the spoke plate of the conical ring shape will also be quickly deformed, thereby causing the supporting wheel to fail, so that the replacement of the supporting wheel needs to be completed as soon as possible. However, the rim of the supporting wheel is usually damaged in a harsh working site, if it is returned to the maintenance site for replacement, the time required for the round trip is long, and if it is replaced on site, the replacement is difficult due to the harsh environment, which will seriously affect the operation progress. SUMMARY

[0003] The utility model aims at providing a supporting wheel with high reliability of wheel body structure.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of a supporting wheel, the whole of the spoke is ring-shaped plate, the outer opening is connected with the middle of the rim in the axial direction, the inner opening is connected with the middle of the wheel shaft sleeve in the axial direction, the rim and the wheel shaft sleeve are tubular as a whole.

[0005] Compared with the prior art, the utility model has the following technical effects: the spoke of the ring-shaped plate can stably and reliably support the rim and transmit the load with the minimum path, even if the rim is partially out of round, the supporting wheel body still has certain bearing capacity, and the stability and reliability of the supporting wheel body structure are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0006] The content expressed by each drawing of the specification and the marks in the drawing are briefly described as follows:

[0007] Figure 1 It is the front view of example one;

[0008] Figure 2 It is the right view of example one;

[0009] Figure 3 It is the A-A sectional view of Figure 1

[0010] Figure 4 It is the sectional view of the wheel core of example two; ​

[0011] Figure 5 This is a cross-sectional schematic diagram of the wheel core in Example 3. Detailed Implementation

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0013] Example 1

[0014] A support roller includes spokes 10 that are integrally annular plates, a rim 20 that is integrally tubular, and an axle sleeve 30. See attached diagram for details. Figure 3 As shown, the outer edge of the spoke 10 is connected to the center of the wheel rim 20 in the axial direction, and the inner edge is connected to the center of the wheel axle sleeve 30 in the axial direction. Thus, during use, if the wheel rim 20 becomes uneven, the spoke 10 can still provide reliable vertical support for the wheel axle sleeve 30, effectively ensuring the posture of the wheel axle sleeve 30 and preventing damage to the wheel axle sleeve 30 and its internal axles, thus avoiding significant damage to the traveling machinery.

[0015] Obviously, in this embodiment, the section of the tube connecting the wheel axle sleeve 30 to the wheel spoke 10 bears a large stress. To ensure the reliability of the connection between the two, as shown in the attached... Figure 3 As shown, the wall thickness of the pipe section connecting the wheel axle sleeve 30 to the wheel spoke 10 is greater than that of other pipe sections. Specifically, a boss 31 can be provided in the middle of the wheel axle sleeve 30 in the axial direction. In this embodiment, the boss 31 is generally in the shape of an annular platform, and the two side plates of the wheel spoke 10 are located inside the two side stepped surfaces of the boss 31. That is, the projection of the wheel spoke 10 in the axial direction of the wheel axle sleeve 30 is located within the projection area of ​​the boss 31 in the axial direction of the wheel axle sleeve 30. The wheel axle sleeve 30 with a larger wall thickness at the location of the boss 31 has stronger resistance to deformation, and the connection between the wheel spoke 10 and this pipe section can effectively ensure the load-bearing capacity of the support wheel body. In other embodiments, if the projections of the wheel spoke 10 and the boss 31 in the axial direction of the wheel axle sleeve 30 overlap due to installation or structural limitations, that is, the wheel spoke 10 and the boss 31 are partially overlapped or partially misaligned in the axial direction of the wheel axle sleeve 30, which can also improve the reliability of the connection between the two.

[0016] Furthermore, in this embodiment, the boss 31 is a continuously arranged annular platform; in other embodiments, the boss 31 may also be a platform intermittently arranged within the wheel axle sleeve 30. In this embodiment, the two side stepped surfaces of the boss 31 are annular planes perpendicular to the shaft core of the wheel axle sleeve 30; in other embodiments, the two side stepped surfaces of the boss 31 may also be conical surfaces. In this embodiment, the platform surface of the boss 31 is a cylindrical surface whose core coincides with the shaft core of the wheel axle sleeve 30; in other embodiments, the platform surface of the boss 31 may also be a curved surface.

[0017] In this embodiment, the outer edge of the spoke 10 is welded to the center of the inner ring surface of the rim 20 in the axial direction to form a single unit, and the inner edge of the spoke 10 is welded to the center of the outer circumferential surface of the axle sleeve 30 in the axial direction to form a single unit. In this way, the spoke 10, rim 20, and axle sleeve 30 are processed and then welded together, which is relatively simple and convenient to process, but the amount of welding work is large.

[0018] To improve the deformation resistance of the wheel rim 20, this embodiment is illustrated in the appendix. Figure 3 As shown, the rim 20 has built-in flanges 21 at both axial ends. In this embodiment, the spokes 10 are located within the coverage area of ​​the two flanges 21, and the end of the axle sleeve 30 protrudes outside the coverage area of ​​the flanges 21, as shown in the attached figure. Figure 2 As shown, the spokes 10 are covered and shielded by the rim 20, which effectively protects the spokes 10 body and ensures the reliability of the support roller; the two ends of the axle sleeve 30 are exposed on the outside of the rim 20, which facilitates the installation and removal of the support roller.

[0019] The shape and structure of the flanges 21 at both axial ends of the rim 20 can be the same or slightly different. For example, in terms of the thickness of the flanges 21, a flange structure with uniform thickness can be used, or a flange structure that gradually decreases in thickness from the base to the overhang end can be used. In terms of the outer contour of the flanges 21, a flange 21 with its outer surface located in the same plane and the plane being perpendicular to the core of the rim 20 can be used, or a flange 21 with its outer surface located in the same conical surface with a larger inner surface and a smaller outer surface, and the core axis of the conical surface coinciding with the core axis of the rim 20 can be used. Furthermore, when the flanges 21 have a larger thickness, the larger the dimension of the flanges 21 extending radially inward along the rim 20, the stronger the resistance to deformation.

[0020] As attached Figure 3 In the illustrated embodiment, the thickness of the flange 211 at the left end of the rim 20 gradually decreases from the base to the overhang end. The outer surfaces of flange 211 are located in the same plane, which is perpendicular to the core of the rim 20. The flange 212 at the right end of the rim 20 has a uniform thickness. The outer surfaces of flange 212 are located within the same conical surface with a larger inner diameter and a smaller outer diameter, and the spindle of this conical surface coincides with the spindle of the rim 20. Specifically, in this embodiment, the thickness of flange 212 is greater than that of flange 211, and the distance between the overhang end of flange 211 and the outer surface of the rim 20 is less than the distance between the overhang end of flange 212 and the outer surface of the rim 20. This gives the rim 20 segment on the side where flange 212 is located stronger resistance to deformation.

[0021] As attached Figure 1 As shown, in this embodiment, the wheel spokes 10 are provided with weight-reducing holes 11 at equal angles on the plate. The number and shape of the weight-reducing holes 11 can be adjusted according to requirements.

[0022] Example 2

[0023] The difference between this embodiment and embodiment one is that the spoke 10 and the rim 20 are integrally formed by spinning. Thus the integrity of the spoke 10 and the rim 20 is better, but the production and processing requirements of the spoke 10 and the rim 20 are also higher.

[0024] Embodiment three

[0025] The difference between this embodiment and embodiment two is that the structure of the flange 21 is different. In this embodiment, the thickness of the flange one 211 at the left end of the rim 20 is uniform, and the outer surface of the flange one 211 is located in the same plane which is perpendicular to the core axis of the rim 20. The thickness of the flange two 212 at the right end of the rim 20 gradually decreases from the base to the overhanging end, and the outer surface of the flange two 212 is located in the same cone surface which is large inside and small outside, and the core axis of the cone surface coincides with the core of the rim 20. The base thickness of the flange two 212 is larger, which is used to contact with the track parts, has better wear resistance, can further improve the wear resistance of the support wheel body, and thus improve the service life.

Claims

1. A load wheel characterized by: The outer opening of the whole annular plate-shaped spoke (10) is connected to the middle part in the axial direction of the rim (20), and the inner opening is connected to the middle part in the axial direction of the hub (30). The rim (20) and the hub (30) are in the form of a whole pipe.

2. The wheel set according to claim 1, characterized in that: The outer opening of the spoke (10) is welded to the middle part in the axial direction of the inner ring surface of the rim (20).

3. The wheel set according to claim 1, characterized in that: The spoke (10) and the rim (20) are integrally formed by spinning.

4. The wheel set according to claim 1, characterized in that: The inner opening of the spoke (10) is welded to the middle part in the axial direction of the outer peripheral surface of the hub (30).

5. The wheel according to any one of claims 1-4, characterized in that: The rim (20) is provided with built-in flanges (21) at both axial ends, the spoke (10) is located in the wrapping area of the two flanges (21), and the end of the hub (30) protrudes outside the wrapping area of the flanges (21).

6. The wheel set according to claim 5, characterized in that: The thickness of the flange (21) gradually decreases from the base to the overhanging end, or the thickness of the flange (21) is uniform.

7. The wheel set according to claim 5, characterized in that: The outer surface of the flange (21) is located in the same plane which is perpendicular to the core of the rim (20), or the outer surface of the flange (21) is located in the same inner large and outer small conical surface whose core coincides with the core of the rim (20).

8. The wheel set according to claim 5, characterized in that: The flange (21) includes flange one (211) and flange two (212), and the sizes of the flange one (211) and the flange two (212) in the radial direction of the rim (20) are different.

9. The wheel set according to claim 8, characterized in that: The thickness of the flange one (211) gradually decreases from the base to the overhanging end, and the thickness of the flange two (212) is uniform; the outer surface of the flange one (211) is located in the same plane which is perpendicular to the core of the rim (20), and the outer surface of the flange two (212) is located in the same inner large and outer small conical surface whose core coincides with the core of the rim (20); the distance between the overhanging end of the flange one (211) and the outer ring surface of the rim (20) is smaller than the distance between the overhanging end of the flange two (212) and the outer ring surface of the rim (20).

10. The wheel of claim 1, wherein: The plate body of the spoke (10) is provided with weight-reducing holes (11) at equal angles.

11. The wheel of claim 1, wherein: The wall thickness of the pipe section of the hub (30) connected to the spoke (10) is greater than that of other pipe sections.

12. The wheel as set forth in claim 1 or 11, characterized in that: The middle part of the hub (30) in the axial direction is provided with a boss (31) which is in the form of a whole annular table, and the projection of the spoke (10) and the boss (31) in the axial direction of the hub (30) has an overlapping section.

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