Axle shaft tube structure, axle assembly and vehicle

Abstract

The utility model provides an axle tube structure, an axle assembly and a vehicle. The axle shaft tube structure comprises a connecting end plate and a shaft tube piece. The connecting end plate is provided with a shaft tube connecting hole, a hub mounting hole and a drainage groove. The shaft pipe fitting is connected to the shaft pipe connecting hole, and the shaft pipe connecting hole and the hub mounting hole are arranged at intervals. The drainage groove is formed in the outer side face of the connecting end plate and extends to the axle tube connecting hole from the hub mounting hole. Through the arrangement, the occurrence of ABS signal loss and abnormal problems caused by water entering the ABS unit mounting hole is effectively reduced, and then the safety performance of a vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of transportation vehicles, and in particular to an axle tube structure, an axle assembly, and a vehicle. Background Art

[0002] As one of the important components of a vehicle, the axle system is mainly used to transmit power and bear the load of the entire vehicle. The axle system mainly includes a bridge tube and parts such as a brake connecting disc and a shock absorber bracket connected to the bridge tube. The wheel hub unit is assembled on the brake connecting disc to realize wheel movement and vehicle braking. In related technologies, the wheel hub unit mounting hole on the brake connecting disc coincides with the bridge tube connection hole. When the ground clearance of the vehicle chassis meets the requirements, the distance between the cargo platform of the vehicle body and the ground is large, which makes it difficult to load and unload goods, and also reduces the cargo space of the vehicle, affecting people's driving experience. Since water easily accumulates at the brake connecting disc, the ABS (Antilock Brake System) unit mounting hole on the wheel hub unit is easily flooded, resulting in ABS signal loss and frequent abnormal problems, which in turn affects the safety risks of the vehicle.

[0003] Therefore, it is necessary to provide an improved axle tube structure to solve some or all of the above problems. Utility Model Content

[0004] The present application provides an axle tube structure, an axle assembly and a vehicle with high safety.

[0005] The present application provides an axle tube structure of an axle, comprising a connecting end plate and an axle tube member; the connecting end plate is provided with an axle tube connecting hole, a wheel hub mounting hole and a drainage groove; the axle tube member is connected to the axle tube connecting hole, and the axle tube connecting hole and the wheel hub mounting hole are spaced apart; the drainage groove is provided on the outer side surface of the connecting end plate, and extends from the wheel hub mounting hole to the axle tube connecting hole.

[0006] Furthermore, a distance A between the center of the shaft tube connecting hole and the center of the wheel hub mounting hole is not less than 85 mm and not more than 125 mm.

[0007] Furthermore, the connecting end plate is further provided with a plurality of fixing holes, and the plurality of fixing holes are arranged at intervals around the hub mounting hole.

[0008] Furthermore, the shaft tube member includes a shaft tube body, and the connecting end plates are respectively fixed to opposite ends of the shaft tube body; the shaft tube member is symmetrically arranged in its length direction.

[0009] Furthermore, the shaft tube also includes a leaf spring mounting seat and a leaf spring reinforcement bracket; the leaf spring mounting seat is fixed to the shaft tube body and is arranged adjacent to the connecting end plate; the leaf spring reinforcement bracket is respectively connected to the bottom wall of the leaf spring mounting seat and the shaft tube body.

[0010] Furthermore, the shaft tube also includes a buffer support; the buffer support is fixed to the shaft tube body and is adjacent to the side of the leaf spring mounting seat away from the connecting end plate.

[0011] Furthermore, the shaft tube also includes a shock-absorbing support and a shock-absorbing reinforcement bracket; the shock-absorbing support is fixed to the shaft tube body, and the shock-absorbing reinforcement bracket is located in the shock-absorbing support and is respectively connected to the shock-absorbing support and the shaft tube body.

[0012] Furthermore, the shaft tube further comprises a plurality of wire harness mounting brackets; along the length direction of the shaft tube body, the plurality of wire harness mounting brackets are spaced apart on the shaft tube body.

[0013] The present application also provides an axle assembly, including a wheel hub assembly, a leaf spring assembly, a shock absorber assembly, a buffer block and the axle tube structure as described above; the wheel hub assembly is installed in the wheel hub mounting hole, and the leaf spring assembly, the shock absorber assembly and the buffer block are all arranged on the axle tube.

[0014] The present application also provides a vehicle, comprising a vehicle body and the axle assembly as described above; the axle assembly is arranged at the bottom of the vehicle body.

[0015] Compared to existing technologies, the axle tube structure of this application utilizes an axle tube connection hole and a wheel hub mounting hole, which are spaced apart. This reduces the ground clearance of the vehicle's cargo platform, facilitating cargo loading and unloading while also increasing the vehicle's cargo space, provided the vehicle's ground clearance meets requirements. Drainage grooves are provided on the outer side of the connecting end plate, extending from the wheel hub mounting hole to the axle tube connection hole. This effectively reduces ABS signal loss and abnormalities caused by water ingress into the ABS unit mounting hole, thereby improving vehicle safety.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0018] Figure 1 It is a three-dimensional diagram of the axle tube structure of the present application.

[0019] Figure 2 yes Figure 1 Side view of the mid-axle shaft tube structure.

[0020] Figure 3 yes Figure 1 A partial enlarged view of the middle axle shaft tube structure B.

[0021] Figure 4 yes Figure 1 A three-dimensional image of the mid-axle shaft tube structure from another perspective.

[0022] Figure 5 yes Figure 1 A three-dimensional image of the mid-axle shaft tube structure from another perspective.

[0023] Figure 6 yes Figure 5 A partial enlarged view of the center axle tube structure C.

[0024] Figure 7 It is a three-dimensional view of the axle assembly of the present application.

[0025] Figure 8 yes Figure 7 Side view of the mid-axle assembly.

[0026] Figure 9 yes Figure 7 A three-dimensional view of the center hub assembly mounted on the axle tube structure.

[0027] Figure 10 yes Figure 9 Exploded view of the center hub assembly.

[0028] Explanation of the accompanying numbers: 1-connecting end plate; 11-axle tube connecting hole; 12-wheel hub mounting hole; 13-drainage groove; 14-fixing hole; 2-axle tube fitting; 21-axle tube body; 22-leaf spring mounting seat; 221-leaf spring mounting surface; 23-leaf spring reinforcement bracket; 24-buffer support; 241-buffer mounting surface; 25-shock absorber support; 26-shock absorber reinforcement bracket; 27-wiring harness mounting bracket; 3-wheel hub assembly; 31-brake disc; 32-wheel hub bearing; 33-mudguard; 34-brake caliper; 35-fixing part; 4-leaf spring assembly; 5-shock absorber assembly; 6-buffer block. DETAILED DESCRIPTION

[0029] Here, the technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If there are terms related to directional indications or positional relationships in the embodiments of this application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first" and "second" in the embodiments of this application are only used for the purpose of convenience of description and should not be understood as indicating or implying relative importance.

[0031] like Figures 1 to 3 As shown, the axle tube structure of the present application includes a connecting end plate 1 and an axle tube member 2. The connecting end plate 1 is mounted on the axle tube member 2. The connecting end plate 1 is provided with an axle tube connection hole 11, a wheel hub mounting hole 12, a drainage groove 13, and a fixing hole 14. The axle tube connection hole 11 and the wheel hub mounting hole 12 are spaced apart, and the axle tube member 2 is connected to the axle tube connection hole 11. When the axle tube structure is installed on a vehicle, the wheel hub mounting hole 12 is located above the axle tube connection hole 11.

[0032] This configuration allows the cargo platform in the vehicle cabin to be even closer to the ground, providing the vehicle meets ground clearance requirements. This also increases the vehicle's cargo space, allowing it to carry more cargo, bringing greater added value to customers.

[0033] Drain groove 13 is located on the outer side of the connecting end plate 1. Specifically, it is recessed from the side of the connecting end plate 1 facing away from the axle tube 2. Drain groove 13 extends from the wheel hub mounting hole 12 to the axle tube connection hole 11, and is connected to both the wheel hub mounting hole 12 and the axle tube connection hole 11. Drain groove 13 is used to drain water from the vehicle, effectively resolving issues with ABS signal loss and abnormalities caused by water ingress into the mounting hole, thereby improving vehicle safety.

[0034] The distance A between the center of the axle tube connecting hole 11 and the center of the wheel hub mounting hole 12 is not less than 85 mm and not more than 125 mm, so that the vehicle meets the ground clearance requirements and ensures the vehicle's passability, and the cargo platform in the vehicle cabin is closer to the ground, making it more convenient for people to load and unload goods. At the same time, such a setting also makes the manufacturing of the connecting end plate 1 simple, improves the strength of the connecting end plate 1, and thus extends the service life of the connecting end plate 1.

[0035] Specifically, if the distance A between the center of the axle tube connection hole 11 and the center of the wheel hub mounting hole 12 is less than 85 mm, the ground clearance of the vehicle and the ground clearance of the cargo platform in the vehicle cabin will increase, thereby increasing the difficulty of loading and unloading cargo and reducing the cargo space in the vehicle. If the distance A between the center of the axle tube connection hole 11 and the center of the wheel hub mounting hole 12 is greater than 125 mm, the ground clearance of the vehicle will be reduced, affecting the vehicle's passability.

[0036] The distance A between the center of the axle tube connecting hole 11 and the center of the wheel hub mounting hole 12 is preferably 115 mm, so that the vehicle can well take into account the ground clearance of the chassis and the ground clearance of the cargo platform, thereby improving the vehicle's passability and making it more convenient to load and unload goods. At the same time, it also makes the manufacturing of the connecting end plate 1 simpler and the strength of the connecting end plate 1 higher.

[0037] There are a plurality of fixing holes 14, and the plurality of fixing holes 14 are spaced apart around the hub mounting hole 12. The connecting end plate 1 is preferably manufactured by, but not limited to, a forging process.

[0038] Further integration Figures 4 to 6 As shown, in one embodiment, the shaft tube 2 is symmetrically arranged along its length. The shaft tube 2 includes a shaft tube body 21, a leaf spring mounting seat 22, a leaf spring reinforcement bracket 23, a buffer support 24, a shock-absorbing support 25, a shock-absorbing reinforcement bracket 26, and a wiring harness mounting bracket 27. The end of the shaft tube body 21 is clamped into the shaft tube connection hole 11. The shaft tube body 21 has a cylindrical tubular structure, and the shaft tube body 21 is preferably, but not limited to, made of steel metal. Two connecting end plates 1 are provided and are fixed to opposite ends of the shaft tube body 21.

[0039] The leaf spring mounting seat 22 is fixed to the axle tube body 21 and is located adjacent to the connecting end plate 1. Two leaf spring mounting seats 22 are provided, symmetrically arranged on the axle tube body 21. To enhance the stability of the leaf spring mounting seats 22 after installation, they are clamped onto the axle tube body 21 and secured via welding. The leaf spring mounting seats 22 include a flat leaf spring mounting surface 221.

[0040] The leaf spring reinforcement bracket 23 is connected to the bottom wall of the leaf spring mounting base 22 and the shaft tube body 21 to improve the strength between the leaf spring mounting base 22 and the shaft tube body 21. Specifically, the leaf spring reinforcement bracket 23 is L-shaped, with one side plate of the leaf spring reinforcement bracket 23 welded to the circumferential surface of the shaft tube body 21 and the other side plate connected to the bottom wall of the leaf spring mounting base 22.

[0041] The buffer support 24 is fixed to the shaft tube body 21, adjacent to the leaf spring mounting seat 22 on the side facing away from the connection end plate 1. Multiple buffer supports 24 are provided, spaced apart on the shaft tube body 21. Each buffer support 24 includes a flat buffer mounting surface 241. The buffer mounting surface 241 is approximately parallel to the leaf spring mounting surface 221.

[0042] The shock-absorbing support 25 is fixed to the shaft tube body 21 . Along the circumferential direction of the shaft tube body 21 , the shock-absorbing support 25 is offset relative to the buffer support 24 , and the deflection angle of the shock-absorbing support 25 relative to the buffer support 24 does not exceed 180 degrees.

[0043] The shock-absorbing reinforcement bracket 26 is located within the shock-absorbing support 25 and is respectively connected to the shock-absorbing support 25 and the shaft tube body 21. Specifically, the shock-absorbing reinforcement bracket 26 is U-shaped, and the two opposite side panels of the shock-absorbing reinforcement bracket 26 are fixed to the shock-absorbing support 25, and the middle side panel is fixed to the shaft tube body 21.

[0044] There are multiple harness mounting brackets 27 , which are spaced apart along the length of the shaft tube body 21 . The harness mounting brackets 27 and the shock-absorbing support 25 are disposed on the shaft tube body 21 opposite to each other.

[0045] like Figures 7 to 10 As shown, the present application also provides an axle assembly, including a wheel hub assembly 3, a leaf spring assembly 4, a shock absorber assembly 5, a buffer block 6, and the axle tube structure described above. The wheel hub assembly 3 is mounted in the wheel hub mounting hole 12, and the leaf spring assembly 4, the shock absorber assembly 5, and the buffer block 6 are all mounted on the axle tube 2.

[0046] The wheel hub assembly 3 includes a brake disc 31, a wheel hub bearing 32, a fender 33, a brake caliper 34, and a fixing 35. The brake disc 31 and fender 33 are mounted on the wheel hub bearing 32, and the brake caliper 34 is mounted on the brake disc 31. A portion of the wheel hub bearing 32 is positioned within the wheel hub mounting hole 12. The fixing 35 passes through the fixing hole 14 and is fixed to the wheel hub bearing 32. The connecting end plate 1 is manufactured using a forging process. While ensuring strength, it is combined with the wheel hub bearing 32 and brake caliper 34 to achieve a lightweight design, thereby reducing the overall weight of the axle assembly, achieving low energy consumption, and extending the service life of the axle assembly.

[0047] The leaf spring assembly 4 is fixed to the leaf spring mounting seat 22, and the shock absorber assembly 5 is fixed to the shock absorber support 25. The buffer block 6 is fixed to the buffer support 24. The combination of the leaf spring assembly 4 and the shock absorber assembly 5 can effectively improve the stress of the axle assembly and increase the service life of the axle assembly.

[0048] This application also provides a vehicle comprising a vehicle body and the aforementioned axle assembly. The axle assembly is disposed at the bottom of the vehicle body. Specifically, the wheel hub assembly 3, leaf spring assembly 4, shock absorber assembly 5, and buffer block 6 are all connected to the vehicle body. The buffer block 6 is located between the vehicle body and the buffer support 24 to prevent hard contact between the vehicle body and the buffer support 24. Combined with the shock-absorbing effect of the leaf spring assembly 4 and shock absorber assembly 5, it effectively improves the comfort of the entire vehicle.

[0049] By installing the aforementioned axle assembly, the vehicle of the present application not only improves vehicle comfort but also reduces the ground clearance of the cargo platform within the vehicle cabin, thereby increasing the vehicle's interior space. Furthermore, during vehicle operation, if water enters the ABS unit mounting hole (not shown) on the wheel hub assembly 3, the drainage groove 13 on the connecting end plate 1 will promptly drain the water, thereby reducing the occurrence of ABS signal loss and abnormalities, thereby improving vehicle safety.

[0050] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application shall be included in the scope of protection of this application.

Claims

1. A vehicle axle tube structure, characterized in that: It includes a connecting end plate and an axle tube fitting; the connecting end plate is provided with an axle tube connecting hole, a wheel hub mounting hole and a drainage groove; the axle tube fitting is connected to the axle tube connecting hole, and the axle tube connecting hole and the wheel hub mounting hole are spaced apart; the drainage groove is provided on the outer side surface of the connecting end plate, and extends from the wheel hub mounting hole to the axle tube connecting hole.

2. The axle tube structure according to claim 1, characterized in that: The distance A between the center of the shaft tube connecting hole and the center of the wheel hub mounting hole is not less than 85 mm and not more than 125 mm.

3. The axle tube structure according to claim 1, characterized in that: The connecting end plate is further provided with a plurality of fixing holes, and the plurality of fixing holes are arranged at intervals around the hub mounting hole.

4. The axle tube structure according to claim 1, characterized in that: The shaft tube member comprises a shaft tube body, and the connecting end plates are respectively fixed to opposite ends of the shaft tube body; the shaft tube member is symmetrically arranged in the length direction thereof.

5. The axle tube structure according to claim 4, characterized in that: The shaft tube also includes a leaf spring mounting seat and a leaf spring reinforcement bracket; the leaf spring mounting seat is fixed to the shaft tube body and is arranged adjacent to the connecting end plate; the leaf spring reinforcement bracket is respectively connected to the bottom wall of the leaf spring mounting seat and the shaft tube body.

6. The axle tube structure according to claim 5, characterized in that: The shaft tube further includes a buffer support; the buffer support is fixed to the shaft tube body and is adjacent to a side of the leaf spring mounting seat away from the connecting end plate.

7. The axle tube structure according to claim 4, characterized in that: The shaft tube also includes a shock-absorbing support and a shock-absorbing reinforcement bracket; the shock-absorbing support is fixed to the shaft tube body, and the shock-absorbing reinforcement bracket is located in the shock-absorbing support and is respectively connected to the shock-absorbing support and the shaft tube body.

8. The axle tube structure according to claim 4, characterized in that: The shaft tube further comprises a plurality of harness mounting brackets; along the length direction of the shaft tube body, the plurality of harness mounting brackets are spaced apart on the shaft tube body.

9. An axle assembly, characterized in that: It includes a wheel hub assembly, a leaf spring assembly, a shock absorber assembly, a buffer block and the axle tube structure according to any one of claims 1 to 8; the wheel hub assembly is installed in the wheel hub mounting hole, and the leaf spring assembly, the shock absorber assembly and the buffer block are all arranged on the axle tube.

10. A vehicle, characterized in that: The invention comprises a vehicle body and the axle assembly as claimed in claim 9; the axle assembly is arranged at the bottom of the vehicle body.

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