Wheel end assembly and axle with easy maintenance

Abstract

The utility model discloses a wheel end assembly and axle convenient to maintain, wheel end assembly convenient to maintain includes axle, wheel hub, brake disc, wheel hub is set up in the outside of axle and is pivoted with axle through bearing, and the outer edge surface of wheel hub is provided with a plurality of first flanges, and brake disc includes disc body, connecting portion, is provided with a plurality of second flanges on connecting portion, and a plurality of second flanges are set up one by one with a plurality of first flanges, and corresponding second flanges and first flanges are arranged along the axial direction of axle and are close together, and first flange and second flange are locked together through the connecting bolt of traversing both, the maximum outer diameter of other parts except first flange on wheel hub is R1, and the diameter of the circle surrounded by the inner end portion of a plurality of second flanges is R2, and R2 is greater than R1. The utility model discloses can conveniently maintain the wheel end assembly of axle, reduces the dismounting frequency of wheel hub internal bearing, and the influence caused to wheel hub internal bearing precision is reduced.

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, making the maintenance process cumbersome. Repeated disassembly and removal of the wheel hub bearing can cause changes in the wheel hub bearing clearance, which in turn affects the precision of the wheel hub bearing and may even damage the sealing performance of the wheel hub bearing, thus 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, so as to facilitate the repair 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 axles, hubs, and brake discs; The hub is fitted outside the axle and pivotally engages with the axle through a bearing. Multiple first flanges protruding outward along the radial direction of the axle are provided on the outer edge surface of the hub. The brake disc includes a disc body and a connecting part that is sleeved on the outside of the wheel hub and connected to the disc body. The connecting part is provided with a plurality of second flanges that protrude radially inward along the axle. The plurality of second flanges are arranged one-to-one with a plurality of first flanges. The corresponding second flanges and first flanges are arranged along the axial direction of the axle and abut together. The first flanges and second flanges are locked together by connecting bolts that pass through them. The maximum outer diameter of the part of the hub other than the first flange is R1, and the diameter of the circle formed by the inner ends of the multiple second flanges is R2. R2 is greater than R1, so that when the connecting bolts are removed, one of the second flange and the first flange can be moved outward along the axial direction of the axle and then disengaged from the other; or the second flange and the first flange can be separated along the axial direction of the axle when they are rotated relative to each other to the point that they are circumferentially misaligned.

[0006] A first recess is formed between two adjacent first flanges, and a second recess is formed between two adjacent second flanges. When the connecting bolts lock the first flanges and second flanges together, the first recess and the second recess located on one side of the first flange and the second flange are aligned along the axial direction of the axle and together form an air duct.

[0007] The wheel end assembly also includes a connecting flange, with a second flange located outside the first flange and the connecting flange located outside the second flange. Connecting bolts pass through the connecting flange, the second flange, and the first flange in sequence from the outside to lock the connecting flange, the second flange, and the first flange together. The outer edge of the connecting flange is fitted with fixing bolts for connecting the connecting flange to the wheel rim of the vehicle.

[0008] The inner edge of the connecting flange is provided with multiple third flanges that protrude radially inward along the axle. Adjacent third flanges form third recesses. The multiple third flanges are attached to multiple second flanges in a corresponding manner. The connecting bolts pass through the third flanges, second flanges and first flanges in sequence from the outside to the inside. The third recesses are connected to multiple air ducts in a corresponding manner.

[0009] The width of the first flange is less than or equal to the width of the second recess, and the width of the second flange is less than or equal to the width of the first recess.

[0010] The second flange is located inside the first flange, and a connecting flange is provided on the outer edge surface of the connecting part. Fixing bolts for connecting the connecting flange to the wheel rim of the vehicle are passed through the connecting flange.

[0011] The connecting part is cylindrical, with multiple second flanges located at the outer end of the connecting part and the disc body located at the inner end of the connecting part.

[0012] The disc body and the connecting part are integrally formed.

[0013] The disc body and the connecting part are fixed together in a detachable manner.

[0014] 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.

[0015] The beneficial effects of this utility model are as follows: In this invention, when maintenance is required on the brake disc or wheel hub, only the connecting bolts need to be removed to disassemble the brake disc or wheel hub separately, without having to disassemble the entire wheel end assembly. Therefore, it is convenient to maintain the wheel end assembly of the axle, reduce the number of times the bearing inside the wheel hub needs to be disassembled, and reduce the impact on the precision of the bearing inside the wheel hub. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the middle hub; Figure 3 for Figure 1 Schematic diagram of the structure of the central brake disc; Figure 4 for Figure 3 View from direction A; Figure 5 for Figure 1 A schematic diagram of the connecting flange. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: like Figure 1 , 2As shown in Figures 3, 4, and 5, this utility model provides a wheel end assembly that is easy to maintain. It includes an axle 10, a wheel hub 20, and a brake disc 30. The wheel hub 20 is a generally cylindrical structure, fitted around the outside of the axle 10 and pivotally engaged with it via two bearings 11. Multiple first flanges 21 protruding radially outward along the axle 10 are provided on the outer edge of the wheel hub 20. These first flanges 21 can be arranged in a circumferential array around the central axis of the wheel hub 20, or arranged in other ways around the circumference of the wheel hub 20. The brake disc 30 includes a disc body 31 and a connecting portion 32 connected to the disc body 31. The connecting part 32 may be partially sleeved on the outside of the wheel hub 20. The inner edge of the connecting part 32 is provided with a plurality of second flanges 33 that protrude radially inward along the axle 10. The plurality of second flanges 33 are provided in a one-to-one correspondence with a plurality of first flanges 21. The corresponding second flanges 33 and first flanges 21 are arranged and abutted together along the axial direction of the axle 10. Specifically, in the axial direction of the axle 10, the second flanges 33 are located outside the first flanges 21. The corresponding second flanges 33 and first flanges 21 are locked together by a connecting bolt 50 that runs from the outside to the inside, thereby locking and fixing the brake disc 30 and the wheel hub 20 together. The maximum outer diameter of the portion of the wheel hub 20 other than the first flange 21 is R1. From the axial direction of the axle 10, the diameter of the circle formed by the inner ends of the multiple second flanges 33 on the brake disc 30 is R2. R2 is the minimum inner diameter of the brake disc 30. R2 is greater than R1, which means that the minimum inner diameter of the brake disc 30 is greater than the maximum outer diameter of the portion of the wheel hub 20 located outside the first flange 21. With this dimension setting, when the connecting bolt 50 is removed, the multiple second flanges 33 can be moved outward along the axial direction of the axle 10, so that the second flanges 33 are separated from the first flange 21. Without removing the wheel hub 20, the brake disc 30 can be removed from the outer end of the axle 10 for maintenance. When maintenance is required on the wheel hub 20, the connecting bolts 50 can be removed, and the wheel hub 20 can be rotated by a predetermined angle so that the corresponding first flange 21 and second flange 33 are offset in the circumferential direction of the axle 10. Then, a force is applied to the wheel hub 20 in the axial direction of the axle 10 outward. The first flange 21 can pass through the adjacent second flange 33 and move outward to separate from the second flange 33. In this way, the wheel hub 20 can be removed from the outer end of the axle 10 in the axial direction without removing the brake disc 30.

[0018] In this invention, when maintenance is required on the brake disc or wheel hub, only the connecting bolts need to be removed to disassemble the brake disc or wheel hub separately, without having to disassemble the entire wheel end assembly. Therefore, it is convenient to maintain the wheel end assembly of the axle, reduce the number of times the bearing inside the wheel hub needs to be disassembled, and reduce the impact on the precision of the bearing inside the wheel hub.

[0019] In this invention, a first recess 22 is formed on the wheel hub 20 between two adjacent first flanges 21, and a second recess 34 is formed on the brake disc 30 between two adjacent second flanges 33. When the connecting bolts 50 lock the first flanges 21 and second flanges 33 together, that is, when the first flanges 21 and second flanges 22 are aligned along the axial direction of the axle 10, the first recess 22 and second recess 34 located on one side of the first flanges 21 and second flanges 33 are aligned along the axial direction of the axle 10, and the aligned first recess 22 and second recess 34 form an air duct. This air duct connects from the inner side of the connecting part 32 of the brake disc 30 to the outer side of the wheel hub 20. When the wheel hub 20 and the brake disc 30 rotate, air can flow in the air duct, thereby accelerating the cooling of the brake disc 30 disc body 31. Multiple first recesses 22 and multiple second recesses 34 correspond one-to-one, forming multiple air ducts at the mating point of the wheel hub 20 and the brake disc 30.

[0020] To facilitate the connection of the tire to the wheel end assembly, the wheel end assembly of this utility model also includes a connecting flange 40. The connecting flange 40 is located outside the second flange 33 and is close to the second flange 33. The connecting bolts 50 pass through the connecting flange 40, the second flange 33 and the first flange 21 from the outside to the inside, locking the connecting flange 40, the second flange 33 and the first flange 21 together. The outer edge of the connecting flange 40 is provided with fixing bolts 43 for connecting the connecting flange 40 to the wheel rim of the vehicle. The inner edge of the connecting flange 40 is provided with a plurality of third flanges 41 that protrude radially inward along the axle 10. A third recess 42 is formed between adjacent third flanges 41. The plurality of third flanges 41 are abutted against the outer side of a plurality of second flanges 33 in a corresponding manner. The connecting bolts 50 pass through the third flanges 41, the second flanges 33 and the first flange 21 in sequence outward and inward. The plurality of third recesses 42 are connected to the outer end of a plurality of air ducts in a corresponding manner. The third recesses 42 are used to avoid the air ducts so as to prevent the connecting flange 40 from blocking the air ducts.

[0021] In other embodiments, the present invention may involve placing the first flange 21 outside the second flange 33. When the wheel hub 20 needs to be disassembled, the connecting bolt 50 is removed, and a force is applied to the wheel hub 20 outward along the axial direction of the axle 10. This allows the wheel hub 20 to be disassembled without removing the brake disc 30. When the brake disc 30 needs to be disassembled, the connecting bolt 50 is removed, and the wheel hub 20 rotates by a predetermined angle, causing the first flange 21 and the second flange 33 to be offset circumferentially along the axle 10. The brake disc 30 is then moved outward along the axial direction of the axle 10, allowing the second flange 33 to pass between adjacent first flanges 21, after which the brake disc 30 can be disassembled. When the first flange 21 is placed outside the second flange 33, a connecting flange may be provided on the outer edge surface of the connecting portion 32. This connecting flange is integrally formed with the connecting portion 32, and a fixing bolt is passed through the connecting flange to connect the connecting flange to the wheel rim of the vehicle.

[0022] In this invention, the width of the first flange 21 is smaller than the width of the second recess 34, so that the first flange 21 can pass through the second recess 34 between adjacent second flanges 33; the width of the second flange 33 is smaller than the width of the first recess 22, so that the second flange 33 can pass through the first recess 22 between adjacent first flanges 21.

[0023] In this invention, a plurality of second flanges 33 are located at the outer ends of the connecting portion, and the disc body 31, which mates with the brake caliper of the vehicle braking system, is located at the inner end of the connecting portion 32. In some embodiments, to reduce the number of parts and facilitate the assembly of the wheel end assembly, the disc body 31 and the connecting portion 32 are integrally formed. Since the disc body 31 is usually made of a material suitable for mating with the brake caliper, to reduce material costs, the disc body 31 and the connecting portion 32 can also be detachably fixed together, including by bolt connection or snap-fit.

[0024] 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.

[0025] 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, Including axles, wheel hubs, and brake discs; The hub is fitted outside the axle and pivotally engages with the axle through a bearing. Multiple first flanges protruding outward along the radial direction of the axle are provided on the outer edge surface of the hub. The brake disc includes a disc body and a connecting part that is sleeved on the outside of the wheel hub and connected to the disc body. The connecting part is provided with a plurality of second flanges that protrude radially inward along the axle. The plurality of second flanges are arranged one-to-one with a plurality of first flanges. The corresponding second flanges and first flanges are arranged along the axial direction of the axle and abut together. The first flanges and second flanges are locked together by connecting bolts that pass through them. The maximum outer diameter of the part of the hub other than the first flange is R1, and the diameter of the circle formed by the inner ends of the multiple second flanges is R2. R2 is greater than R1, so that when the connecting bolts are removed, one of the second flange and the first flange can be moved outward along the axial direction of the axle and then disengaged from the other; or the second flange and the first flange can be separated along the axial direction of the axle when they are rotated relative to each other to the point that they are circumferentially misaligned.

2. The easy-to-maintain wheel end assembly as described in claim 1, characterized in that, A first recess is formed between two adjacent first flanges, and a second recess is formed between two adjacent second flanges. When the connecting bolts lock the first flanges and second flanges together, the first recess and the second recess located on one side of the first flange and the second flange are aligned along the axial direction of the axle and together form an air duct.

3. The easy-to-maintain wheel end assembly as described in claim 2, characterized in that, The wheel end assembly also includes a connecting flange, with a second flange located outside the first flange and the connecting flange located outside the second flange. Connecting bolts pass through the connecting flange, the second flange, and the first flange in sequence from the outside to lock the connecting flange, the second flange, and the first flange together. The outer edge of the connecting flange is fitted with fixing bolts for connecting the connecting flange to the wheel rim of the vehicle.

4. The easy-to-maintain wheel end assembly as described in claim 3, characterized in that, The inner edge of the connecting flange is provided with multiple third flanges that protrude radially inward along the axle. Adjacent third flanges form third recesses. The multiple third flanges are attached to multiple second flanges in a corresponding manner. The connecting bolts pass through the third flanges, second flanges and first flanges in sequence from the outside to the inside. The third recesses are connected to multiple air ducts in a corresponding manner.

5. The easy-to-maintain wheel end assembly as described in claim 2, characterized in that, The width of the first flange is less than or equal to the width of the second recess, and the width of the second flange is less than or equal to the width of the first recess.

6. The easy-to-maintain wheel end assembly as described in claim 1, characterized in that, The second flange is located inside the first flange, and a connecting flange is provided on the outer edge surface of the connecting part. Fixing bolts for connecting the connecting flange to the wheel rim of the vehicle are passed through the connecting flange.

7. The easy-to-maintain wheel end assembly as described in claim 1, characterized in that, The connecting part is cylindrical, with multiple second flanges located at the outer end of the connecting part and the disc body located at the inner end of the connecting part.

8. The easy-to-maintain wheel end assembly as described in claim 7, characterized in that, The disc body and the connecting part are integrally formed.

9. The easy-to-maintain wheel end assembly as described in claim 7, characterized in that, The disc body and the connecting part are fixed together in a detachable manner.

10. An axle, characterized in that, Includes the easy-to-maintain wheel end assembly as described in any one of claims 1-9.

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