Wheel end assembly and axle for easy maintenance

Abstract

The utility model discloses a wheel end assembly and axle convenient maintenance, wheel end assembly convenient maintenance includes axle, wheel hub, rotor, brake disc, wheel hub is equipped with the outside axle and is pivoted with axle through bearing, and the outer edge surface of wheel hub is provided with a plurality of first connecting flange that projects outward along the radial of axle, rotor includes the connecting section of the tubular that is equipped with the periphery of wheel hub, the second connecting flange that projects inward along the radial of axle by the inner surface of connecting section, the connecting flange of the outer edge of connecting section, the second connecting flange is butt joint in the outside of first connecting flange, and the second connecting flange and first connecting flange are fixed together through the plurality of first connecting bolt that traverses its two, and the connecting flange is used for connecting with the rim of tire, and the brake disc is placed in the inside end of connecting section, and the brake disc is detachably fixed together with the inside end of connecting section through the plurality of second connecting bolt. The utility model under the premise of not needing to disassemble wheel hub, will rotor and brake disc disassembly, and it is convenient to maintain brake disc.

Description

Technical Field

[0001] This utility model relates to the field of commercial vehicle technology, specifically to a wheel end assembly and axle that are easy to maintain. Background Technology

[0002] Commercial vehicle axles are typically equipped with wheel end assemblies, which include brake discs, wheel hubs, and axles. The wheel hub is pivotally connected to the axle head at the end of the axle via bearings, and the brake disc is fitted onto the axle and connected to the inside of the wheel hub. In existing wheel end assemblies, when maintenance of the brake disc is required, the entire wheel end must be removed from the end of the axle. The maintenance process of wheel end assemblies is quite cumbersome. After repeated disassembly and reassembly, the clearance of the wheel hub bearing increases, affecting the precision of the wheel hub bearing. The disassembly process can also reduce the sealing performance of the wheel hub bearing, thereby creating safety risks. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a wheel end assembly that is easy to maintain, which allows for the removal of the brake disc without disassembling the wheel hub, thus facilitating the maintenance of the wheel end assembly.

[0004] The second objective of this utility model is to provide a vehicle axle.

[0005] To achieve the first objective mentioned above, this utility model adopts the following technical solution: Easy-to-maintain wheel end components, including axle, hub, rotor, and brake disc; The wheel hub is fitted outside the axle and pivotally engages with the axle through a bearing. Multiple first connecting flanges protruding outward along the radial direction of the axle are provided on the outer edge surface of the wheel hub. The rotor includes a cylindrical connecting section sleeved around the hub, a second connecting flange protruding radially inward from the inner surface of the connecting section along the axle, and a connecting flange located at the outer edge of the connecting section. The second connecting flange is mated to the outer side of the first connecting flange, and the second connecting flange and the first connecting flange are fixed together by a plurality of first connecting bolts passing through them. The connecting flange is used to connect to the rim of the tire. The brake disc is located at the inner end of the connecting section, and the brake disc is detachably fixed to the inner end of the connecting section by multiple second connecting bolts.

[0006] Multiple connecting bosses protruding radially outward along the axle are provided on the outer edge surface of the inner end of the connecting section. The inner edge of the brake disc forms a connecting ring that mates with the multiple connecting bosses. Multiple second connecting bolts pass through the multiple connecting bosses and connecting rings one by one to fix the brake disc to the connecting section.

[0007] The inner side of the connecting ring has multiple protrusions. The bolt holes on the connecting ring for the second connecting bolt to pass through extend from the outer side of the connecting ring to the end face of the protrusions away from the connecting ring, and a recess is formed between adjacent protrusions.

[0008] Each connecting boss has a threaded hole for the second connecting bolt to pass through. The second connecting bolt passes through the bolt hole on the connecting ring from the inside to the outside and is screwed into the threaded hole of the connecting boss. The end face of the nut of the second connecting bolt is flush with the end face of the protrusion away from the connecting ring or is located outside the end face of the protrusion away from the connecting ring.

[0009] The outer side of the brake disc forms a positioning step at the outer edge of the connecting ring, and the outer edge of the connecting boss abuts against the positioning step.

[0010] The connecting flange is provided with multiple ventilation holes extending from its inner side to its outer side.

[0011] The outer edge of the hub is provided with a groove that is recessed toward the central axis of the hub. The groove extends along the circumference of the hub and is located outside the plurality of first connecting bolts to avoid the nuts of the first connecting bolts.

[0012] To achieve the second objective mentioned above, this utility model adopts the following technical solution: The axle includes the aforementioned easy-to-maintain wheel end assembly.

[0013] The beneficial effects of this utility model are as follows: In this invention, a second connecting flange is provided on the connecting section of the rotor, and a first connecting flange protrudes from the outer edge of the hub. The first connecting flange and the second connecting flange are mated and fixed by multiple first connecting bolts. After the first connecting bolts are removed, the connecting section can be removed outward from the hub. Therefore, the rotor and brake disc can be disassembled without disassembling the hub, which facilitates the maintenance of the brake disc. In addition, the brake disc is fixed to the connecting section by the second connecting bolts, and the brake disc can be removed from the connecting section of the rotor, which further facilitates the maintenance of the brake disc. Furthermore, since the brake disc is usually made of high-cost wear-resistant materials, setting the rotor and brake disc as a separate structure can reduce the material cost of the axle. Attached Figure Description

[0014] Figure 1 This is an installation diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention. Detailed Implementation

[0015] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: like Figure 1 , 2As shown, this utility model provides a convenient wheel end assembly, which includes an axle 10, a wheel hub 20, a rotor 30, and a brake disc 40. The wheel hub 20 is generally a cylindrical structure, which is fitted onto the outside of the axle 10 and pivotally connected to the axle 10 via two bearings 201, allowing the wheel hub 20 and the axle 10 to pivotally engage. A first connecting flange 21 is provided on the outer edge surface of the wheel hub 20, protruding outward along the radial direction of the axle 10. The first connecting flange 21 extends circumferentially along the wheel hub 20, forming an annular structure around the wheel hub 20. The rotor 30 includes a cylindrical connecting section 31, a second connecting flange 32, and a connecting flange 33. The second connecting flange 32 is located at the connecting section 31. The outer end of the connecting segment 31 protrudes radially inward from the inner surface of the connecting segment 31 along the axle 10. The second connecting flange 32 extends circumferentially along the connecting segment 31 to form a ring structure. The connecting flange 33 is located at the outer edge of the connecting segment 31. The connecting flange 33, the second connecting flange 32, and the connecting segment 31 are integrally constructed. The second connecting flange 32 and the first connecting flange 21 are mated together, with the second connecting flange 32 located outside the first connecting flange 21. The second connecting flange 32 and the first connecting flange 21 are fixedly connected together by a plurality of first connecting bolts 50 passing through them. The connecting flange 33 is fixed to the rim of the tire by locking bolts 70 passing through the connecting flange 33. The brake disc 40 is located at the inner end of the connecting segment 31 and is detachably fixed to the inner end of the connecting segment 31 by a plurality of second connecting bolts 60.

[0016] In this invention, a second connecting flange 32 is provided on the connecting section 31 of the rotor 30, and a first connecting flange 21 is provided on the outer edge surface of the hub 20. The first connecting flange 21 and the second connecting flange 32 are mated and fixed by a plurality of first connecting bolts 50. After the first connecting bolts 50 are removed, the connecting section 31 can be removed outward from the hub 20. Therefore, the rotor 30 and the brake disc 40 can be disassembled without disassembling the hub 20, which facilitates the maintenance of the brake disc 40. In addition, the brake disc 40 is fixed to the connecting section 31 by the second connecting bolts, and the brake disc 40 can be removed from the connecting section 31 of the rotor 30, which further facilitates the maintenance of the brake disc 40. Furthermore, since the brake disc 40 is usually made of high-cost wear-resistant materials, setting the rotor 30 and the brake disc 40 as a separate structure can reduce the material cost of the axle.

[0017] In a preferred embodiment of this utility model, a plurality of connecting bosses 311 protruding radially outward along the axle 1 are provided on the outer edge surface of the inner end of the connecting segment 31. A connecting ring 41 is formed on the inner edge surface of the brake disc 40 and abuts against the plurality of connecting bosses 311. During assembly, the connecting ring 41 of the brake disc 40 is abutted against the connecting bosses 311 and the inner end face 310 of the connecting segment 31. A plurality of second connecting bolts 60 pass through the plurality of connecting bosses 311 and the connecting ring 41 one by one, fixing the brake disc 40 and the connecting segment 31 together. Specifically, bolt holes 43 are provided on the connecting ring 41, and threaded holes 312 are provided on the connecting bosses 311. The second connecting bolts 60 pass through the bolt holes 43 from the inside to the outside and are screwed into the threaded holes 312. After tightening the second connecting bolts 60, the brake disc 40 and the rotor 30 are fixed.

[0018] The inner side of the connecting ring 41 is provided with a plurality of protrusions 42, which are arranged one-to-one with a plurality of connecting bosses 311. The bolt holes 43 on the connecting ring 41 for the second connecting bolt 60 to pass through extend from the outer side of the connecting ring 41 to the end face of the protrusions 42 away from the connecting ring 41. A recess 44 is formed between adjacent protrusions 42. By setting the protrusions 42, the bolt holes 43 have a relatively large axial dimension, thereby giving the second connecting bolt 60 and the connecting ring 41 a relatively large mating dimension, thus increasing the stability of the second connecting bolt 60. At the same time, the recess 44 formed between adjacent protrusions 42 can agitate the air flow when the brake disc 40 rotates, and the flowing air can cool the brake disc 40. After the second connecting bolt 60 is passed through the bolt hole 43 from the outside to the inside, the second connecting bolt 60 is screwed into the threaded hole 312 on the connecting boss 311. After the second connecting bolt 60 is tightened, the nut of the second connecting bolt 60 is placed inside the bolt hole 43. The end face of the nut of the second connecting bolt 60 is flush with the end face of the protrusion 42 away from the connecting ring 41, or the end face of the nut of the second connecting bolt 60 is located outside the end face of the protrusion 42 away from the connecting ring 41. In other words, the nut of the second connecting bolt 60 is accommodated inside the bolt hole 43.

[0019] To facilitate the assembly of the rotor 30 and the brake disc 40, a positioning step 45 is formed on the outer side of the brake disc 40 at the outer edge of the connecting ring 41. The outer edge of the connecting boss 311 abuts against the positioning step 45. The positioning step 45 of the connecting boss 311 cooperates with multiple connecting bosses 311 to achieve positioning, thereby ensuring a high degree of coaxiality between the rotor 30 and the brake disc 40 during assembly, which facilitates the insertion of the second connecting bolt 60.

[0020] In addition, multiple ventilation holes 331 are provided on the connecting flange 33. The ventilation holes 331 extend from the inner side of the connecting flange 33 to the outer side of the connecting flange 33. When the connecting flange 33 rotates with the wheel hub 20, air can flow through the ventilation holes 331, which is beneficial for cooling the brake disc 40.

[0021] A groove 22 is provided on the outer edge surface of the hub 20, which is recessed toward the central axis of the hub 20. The groove 22 extends circumferentially along the hub 20 and is located outside the plurality of first connecting bolts 50. When the first connecting bolts 50 are disassembled or assembled, the nuts of the first connecting bolts 50 can be placed in the groove 22 so that the nuts of the first connecting bolts 50 can be avoided by the groove 22, providing a larger installation space for the first connecting bolts 50, thereby facilitating the assembly of the first connecting bolts 50. At the same time, the first connecting bolts 50 can be as close as possible to the hub 20, thereby reducing the protrusion size of the first connecting flange 21, which is beneficial to reducing the radial size of the hub 20 and the rotor 30.

[0022] The axle of this utility model includes the aforementioned easy-to-maintain wheel end assembly. The other structures of the axle are the same as those in the prior art and will not be described in detail here.

[0023] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wheel end assembly that is easy to maintain, characterized in that This includes axles, wheel hubs, rotors, and brake discs; The wheel hub is fitted outside the axle and pivotally engages with the axle through a bearing. Multiple first connecting flanges protruding outward along the radial direction of the axle are provided on the outer edge surface of the wheel hub. The rotor includes a cylindrical connecting section sleeved around the hub, a second connecting flange protruding radially inward from the inner surface of the connecting section along the axle, and a connecting flange located at the outer edge of the connecting section. The second connecting flange is mated to the outer side of the first connecting flange, and the second connecting flange and the first connecting flange are fixed together by a plurality of first connecting bolts passing through them. The connecting flange is used to connect to the rim of the tire. The brake disc is located at the inner end of the connecting section, and the brake disc is detachably fixed to the inner end of the connecting section by multiple second connecting bolts.

2. The easily maintained wheel end assembly of claim 1 wherein, Multiple connecting bosses protruding radially outward along the axle are provided on the outer edge surface of the inner end of the connecting section. The inner edge of the brake disc forms a connecting ring that mates with the multiple connecting bosses. Multiple second connecting bolts pass through the multiple connecting bosses and connecting rings one by one to fix the brake disc to the connecting section.

3. The easily maintained wheel end assembly of claim 2 wherein, The inner side of the connecting ring has multiple protrusions. The bolt holes on the connecting ring for the second connecting bolt to pass through extend from the outer side of the connecting ring to the end face of the protrusions away from the connecting ring, and a recess is formed between adjacent protrusions.

4. The easily maintained wheel end assembly of claim 3 wherein, Each connecting boss has a threaded hole for the second connecting bolt to pass through. The second connecting bolt passes through the bolt hole on the connecting ring from the inside to the outside and is screwed into the threaded hole of the connecting boss. The end face of the nut of the second connecting bolt is flush with the end face of the protrusion away from the connecting ring or is located outside the end face of the protrusion away from the connecting ring.

5. The easily maintained wheel end assembly of claim 3 wherein, The outer side of the brake disc forms a positioning step at the outer edge of the connecting ring, and the outer edge of the connecting boss abuts against the positioning step.

6. The easily maintained wheel end assembly of claim 1 wherein, The connecting flange is provided with multiple ventilation holes extending from its inner side to its outer side.

7. The easy maintenance wheel end assembly of claim 1, wherein, The outer edge of the hub is provided with a groove that is recessed toward the central axis of the hub. The groove extends along the circumference of the hub and is located outside the plurality of first connecting bolts to avoid the nuts of the first connecting bolts.

8. Vehicle axle, characterized in that Includes the easy-to-maintain wheel end assembly as described in any one of claims 1-7.

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