Protective structure of brake system supporting shaft assembly

Abstract

The utility model discloses a protective structure for a supporting shaft assembly of a brake system. The protective structure comprises a supporting shaft, a plurality of stepped structures formed outside the circumference of the support shaft; and the protective cover is arranged outside the at least one step structure of the supporting shaft in a surrounding manner so as to prevent foreign matters from entering. The protective cover is arranged at the end of the gap where the supporting shaft is matched with the hub assembly, so that foreign matter can be prevented from entering, mechanical damage to the supporting shaft or the hub assembly is avoided, the overall service life can be effectively prolonged, meanwhile, a wheel edge sealing piece can be effectively protected, the wheel edge service life is prolonged, and the braking safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake systems, in particular to a brake system support shaft assembly protection structure. Background Art

[0002] Loaders are engineering vehicles widely used in national economic construction. They are used in stone factories, coal factories, steel mills and many other working conditions to transfer goods quickly and efficiently. For transfer machines or cars, their brake system is an indispensable and important component. Most of the current loaders use wet brake axles. In order to reduce the difficulty of maintenance, some technologies provide new wet axle structures. However, due to the harsh working environment of transfer machines, foreign matter is easy to appear inside the wet brake axle structure, which affects the normal use of the wet brake axle and reduces its service life. Utility Model Content

[0003] The purpose of the utility model is to solve the above problems and provide a brake system support shaft assembly protection structure.

[0004] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0005] A brake system support shaft assembly protection structure includes a support shaft;

[0006] A plurality of step structures formed outside the circumference of the support shaft;

[0007] The protective cover is arranged around the outside of at least one stepped structure of the support shaft to prevent the entry of foreign matter.

[0008] As a further description of the above technical solution, the support shaft extends into the wheel hub assembly, and the protective cover is arranged at the end of the gap where the wheel hub assembly and the support shaft cooperate.

[0009] As a further description of the above technical solution, the material of the support shaft is 40Cr, and the protective cover is steel.

[0010] As a further description of the above technical solution, the protective cover includes a protective part and a connecting part, and the protective part is a cover-shaped structure.

[0011] As a further description of the above technical solution, the connecting portion is connected to the supporting shaft by welding.

[0012] As a further description of the above technical solution, the connecting portion is connected to the supporting shaft via bolts.

[0013] As a further description of the above technical solution, an inner rotating combined skeleton oil seal is arranged between the wheel hub assembly and the support shaft.

[0014] As a further description of the above technical solution, the wheel hub assembly is provided with an annular gap relative to the end surface of the support shaft, and the end of the protective cover extends into the annular gap to block foreign matter.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. The utility model sets a protective cover at the end of the gap between the support shaft and the wheel hub assembly, thereby blocking foreign matter from entering, avoiding mechanical damage to the support shaft or the wheel hub assembly, and effectively improving the overall service life. At the same time, it can effectively protect the wheel side seal, enhance the wheel side service life and braking safety.

[0017] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the support shaft assembly protection structure proposed by the utility model;

[0019] Figure 2 It is a schematic diagram of the coordination between the support shaft, the wheel hub assembly and the protective cover;

[0020] Figure 3 yes Figure 2 Enlarged schematic diagram of part A.

[0021] Figure numerals: 1, support shaft; 2, wheel hub assembly; 3, protective cover; 301, protective part; 302, connecting part; 4, inner rotating combined skeleton oil seal; 5, annular gap. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0023] like Figure 1-Figure 3 As shown, in one embodiment, a brake system support shaft 1 assembly protection structure specifically includes a support shaft 1, which is connected to the left half shaft or the right half shaft of the vehicle to drive the wheel hub assembly 2 to rotate, thereby allowing the vehicle to travel normally.

[0024] A plurality of step structures are formed on the outer circumference of the support shaft 1, and the step structures can better cooperate with the wheel hub assembly 2 when inserted into the wheel hub assembly 2;

[0025] A protective cover 3 is arranged around the outside of the circumference of one of the stepped structures of the support shaft 1. The protective cover 3 is arranged at the end of the gap between the support shaft 1 and the wheel hub assembly 2, thereby blocking foreign matter from entering and avoiding mechanical damage to the support shaft 1 or the wheel hub assembly 2. The overall service life can be effectively improved, and the wheel side seal can be effectively protected to enhance the wheel side service life and braking safety.

[0026] Furthermore, the support shaft 1 is made of 40Cr material, the forging is normalized, the whole is tempered, and then the surface is quenched. It has strong mechanical properties and meets the design requirements of the drive axle support shaft 1.

[0027] The dust cover is made of No. 08 steel, which has low strength but good toughness and plasticity, is easy to stamp and form, has low cost, and meets the needs of use while improving cost performance.

[0028] Furthermore, the connecting portion 302 and the support shaft 1 are connected by welding, which can effectively improve the strength and stability of the connection between the two. In other feasible embodiments, the connecting portion 302 and the support shaft 1 can also be connected by bolts. If the protective cover 3 is damaged or needs cleaning and maintenance, it can be removed for maintenance, which is more convenient and quick.

[0029] Furthermore, an inner rotating composite skeleton oil seal 4 is provided between the hub assembly 2 and the support shaft 1, mainly consisting of a rubber seal body, an outer skeleton and an inner skeleton. The design feature of this oil seal is that an interference fit is adopted between the inner skeleton and the rotating shaft to ensure a good sealing effect during the rotation process.

[0030] Furthermore, the wheel hub assembly 2 is provided with an annular gap relative to the end surface of the support shaft 1, and the end of the protective cover 3 extends into the annular gap to block foreign matter and further improve the protection of the wheel side seal.

[0031] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A brake system support shaft assembly protection structure, characterized in that: Including support shaft; A plurality of step structures formed outside the circumference of the support shaft; The protective cover is arranged around the outside of at least one stepped structure of the support shaft to prevent the entry of foreign matter.

2. The brake system support shaft assembly protection structure according to claim 1, characterized in that: The support shaft extends into the wheel hub assembly, and the protective cover is arranged at the end of the gap where the wheel hub assembly and the support shaft cooperate.

3. The brake system support shaft assembly protection structure according to claim 1, characterized in that: The support shaft is made of 40Cr, and the protective cover is made of steel.

4. The brake system support shaft assembly protection structure according to claim 1, characterized in that: The protective cover comprises a protective portion and a connecting portion, and the protective portion is a cover-shaped structure.

5. The brake system support shaft assembly protection structure according to claim 4, characterized in that: The connecting portion is connected to the supporting shaft by welding.

6. The brake system support shaft assembly protection structure according to claim 4, characterized in that: The connecting portion is connected to the supporting shaft via bolts.

7. The brake system support shaft assembly protection structure according to claim 2, characterized in that: An inner rotating combined skeleton oil seal is arranged between the wheel hub assembly and the support shaft.

8. The brake system support shaft assembly protection structure according to claim 2, characterized in that: The wheel hub assembly is provided with an annular gap on the end surface relative to the support shaft, and the end of the protective cover extends into the annular gap to block foreign matter.

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