Wheel end assembly and axle for a commercial vehicle

Abstract

The utility model discloses a wheel end assembly and axle of commercial vehicle, wheel end assembly of commercial vehicle includes axle, wheel hub, rotor, brake disc, wheel hub is set on axle and is pivoted together through bearing, and the outer edge surface of wheel hub is provided with the first connecting ring that projects radially to the outside, rotor includes the connecting section of tubular, by second connecting ring, connecting disc, connecting disc is used for connecting with the rim of tire, and second connecting ring is attached to the outside of first connecting ring, and second connecting ring and first connecting ring are fixed together through multiple connecting bolts that cross both, and brake disc extends radially to the outside from the inside end of connecting section, and the inside diameter of connecting section is R1, and the outside diameter of first connecting ring is R2, wherein, R1>R2, so that after the removal of connecting bolt, the rotor can be removed from the wheel hub after moving outward. In the utility model, the brake disc can be conveniently overhauled, and the wheel hub does not need to be disassembled, so that the bearing of the wheel hub is not damaged.

Description

Technical Field

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

[0002] The wheel end assembly of commercial vehicles typically includes an axle, a hub, and a brake disc. The hub is fitted onto the outside of the axle and pivotally connected to the axle via bearings. The brake disc is connected to the hub via bolts, and the hub is connected to the tire rim via a connecting flange. When the brake disc needs maintenance, the existing wheel end assembly requires the entire assembly to be removed from the axle, making the maintenance process cumbersome. During disassembly, the clearance between the bearings of the hub and the axle is damaged, reducing the bearing precision. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to propose a wheel end assembly for commercial vehicles that allows for maintenance of the brake disc without disassembling the wheel hub, thus facilitating the maintenance of the wheel end assembly and preventing damage to the wheel hub bearing.

[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: Wheel-end components for commercial vehicles, including axles, hubs, rotors, and brake discs; The hub is fitted onto the axle and pivotally connected to the axle via a bearing. A first connecting ring that protrudes radially outward is provided on the outer edge of the hub. The rotor includes a cylindrical connecting section, a second connecting ring extending radially inward from the outer end of the connecting section, and a connecting disc extending radially outward from the outer end of the connecting section. The connecting disc is used to connect with the rim of the tire. The second connecting ring abuts against the outer side of the first connecting ring, and the second connecting ring and the first connecting ring are fixed together by a plurality of connecting bolts that pass through them. The brake disc extends radially outward from the inner end of the connecting section. The inner diameter of the connecting section is R1, and the outer diameter of the first connecting ring is R2, wherein R1 > R2, so that the rotor can be moved outward and removed from the hub after the connecting bolts are removed.

[0006] It also includes a connecting flange, which is attached to the outside of the second connecting ring and the connecting plate. The connecting bolts pass through the inner edge of the connecting flange and the second connecting ring from the outside to the inside and are then screwed onto the first connecting ring. The outer edge of the connecting plate, the connecting flange, and the rim of the tire are locked together by multiple fixing bolts that pass through the three of them.

[0007] The connecting plate has multiple radially outward protruding connecting parts, and a recess is formed between adjacent connecting parts by the outer edge of the connecting plate radially inward. The connecting parts are provided with through holes for fixing bolts to pass through.

[0008] The outer surface of the second connecting ring and the outer surface of the connecting plate together form a mating plane, and the inner surface of the connecting flange forms a mating plane that fits against the mating plane.

[0009] The edge of the mating plane is provided with multiple recesses, each corresponding to a recessed position. The corresponding recesses and recessed positions are aligned in the circumferential direction of the connecting flange and together form a groove.

[0010] The connecting flange, connecting plate, and second connecting ring are integrally formed.

[0011] The brake disc includes a first disc body extending radially outward from the inner end of the connecting section and a second disc body located inside the first disc body. An air guide gap is formed between the first disc body and the second disc body, and the first disc body and the second disc body are connected together by a plurality of connecting ribs located within the air guide gap.

[0012] To achieve the second objective mentioned above, this utility model adopts the following technical solution: Axles, including the wheel end components of the aforementioned commercial vehicles.

[0013] The beneficial effects of this utility model are as follows: In this invention, since the connecting section has a hollow cylindrical structure, its inner diameter is larger than the outer diameter of the first connecting ring. That is, the inner diameter of the connecting section is larger than the outer diameter of any position on the hub. After the connecting bolts are removed, the rotor can be moved outward, and the rotor and brake disc can pass over the first connecting ring to remove the rotor and brake disc. This makes it convenient to inspect the brake disc without disassembling the hub and will not damage the bearings of the hub. Attached Figure Description

[0014] Figure 1 This is an installation diagram of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 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 in Figure 3, this utility model discloses a wheel end assembly for a commercial vehicle, which includes an axle 10, a wheel hub 20, a rotor 30, and a brake disc 40. The wheel hub 20 is sleeved on the axle 10 and is pivotally connected to the axle 10 by two bearings, allowing the wheel hub 20 to rotate relative to the axle 10. The outer edge of the wheel hub 20 is provided with a first connecting ring 21 that protrudes radially outward. The rotor 30 includes a connecting section 31, a second connecting ring 32, and a connecting disc 33. The connecting section 31 has a cylindrical structure, the second connecting ring 32 extends radially inward from the outer end of the connecting section 31, and the connecting disc 33 extends radially outward from the outer end of the connecting section 31. Extending outwards; the connecting section 31 is fitted around the outer periphery of the hub 20, and the second connecting ring 32 is abutted against the outer side of the first connecting ring 21. The second connecting ring 32 and the first connecting ring 21 are fixed together by a plurality of connecting bolts 60 passing through them. The brake disc 40 extends radially outwards from the inner end of the connecting section 31. That is, in the radial direction, the brake disc 40 will not protrude from the inner wall surface of the connecting section 31. The inner diameter of the connecting section 31 is R1, and the outer diameter of the first connecting ring 21 is R2, wherein R1 is greater than R2, so that the rotor 30 and the brake disc 40 can be removed from the wheel end assembly without disassembling the hub 20.

[0016] In this invention, since the connecting section 31 has a hollow cylindrical structure, its inner diameter R1 is greater than the outer diameter R2 of the first connecting ring 21. That is, the inner diameter R1 of the connecting section 31 is greater than the outer diameter of any position on the hub 20. After the connecting bolt 60 is removed, the rotor 30 can be moved outward. The rotor 30 together with the brake disc 40 can pass over the first connecting ring 21 and the rotor 30 and the brake disc 40 can be removed, which facilitates the maintenance of the brake disc 40 without disassembling the hub 20 and will not damage the bearing of the hub 20.

[0017] In a preferred embodiment, the wheel end assembly of this utility model further includes a connecting flange 50, which abuts against the outer side of the second connecting ring 32 and the connecting disc 33. The connecting bolt 60 passes through the inner edge of the connecting flange 50 and the second connecting ring 32 from the outside to the inside and is then screwed onto the first connecting ring 21. The first connecting ring 21 has a relatively large bolt hole with internal threads, which is used to enable the connecting bolt 60 to be screwed and fixed together with the first connecting ring 21. The connecting disc 33, the outer edge of the connecting flange 50, and the rim of the tire are locked together by fixing bolts 70 that pass through all three.

[0018] The connecting disc 33 is provided with multiple radially outward protruding connecting portions 331. A recess 332 is formed between adjacent connecting portions 331, which is radially recessed from the outer edge of the connecting disc 33. The connecting portions 331 are provided with through holes 333 for the fixing bolts 70 to pass through. The radially outward protruding connecting portions 331 are provided so that the distance between the through holes 333 and the central axis of the axle 10 is minimized while meeting the requirements for wheel rim connection. A recess 332 is formed between adjacent connecting portions 331, so that the outer edge of the connecting disc 33 forms a wavy structure. When the rotor 30 rotates with the hub 20, the wavy structure of the connecting disc 33 can drive the airflow, thereby reducing the temperature rise of the rotor 30 and the brake disc 40.

[0019] The second connecting ring 32 and the outer surface of the connecting disc 33 together form a mating plane 34. The inner surface of the connecting flange 50 forms a mating plane 51 that fits against the mating plane 34. By fitting the mating plane 34 and the mating plane 51 together, the rotor 30 and the flange 50 have a relatively large contact area, so that the rotor 30 and the connecting flange 50 can be stably connected together by the connecting bolts 60 and the fixing bolts 70. In addition, the heat generated by the brake disc 40 during braking can be transferred to the connecting flange 50 through the rotor 30, thereby increasing the heat dissipation area of ​​the brake disc 40, which helps to reduce the temperature rise of the brake disc 40 and improve the braking safety of the vehicle.

[0020] Multiple recesses 52 are provided on the edge of the mating plane 51. Each recess 52 corresponds to a recess 332. The corresponding recesses 52 and recesses 332 are aligned in the circumferential direction of the connecting flange 50, so that the corresponding recesses 52 and recesses 332 together form a groove. The multiple grooves form a concave-convex structure between the outer periphery of the rotor 30 and the outer periphery of the connecting flange 50, so that when the connecting flange 50 rotates with the rotor 30, it stirs the air flow together with the rotor 30, further improving the air cooling effect on the brake disc 40.

[0021] In some embodiments, the connecting flange 50 may be integrally formed with the connecting disc 33 and the second connecting ring 32 of the rotor 30 to reduce the number of parts in the wheel end assembly, thereby simplifying the structure of the wheel end assembly and making installation easier.

[0022] The brake disc 40 includes a first disc body 41 extending radially outward from the inner end of the connecting section 31 and a second disc body 42 located inside the first disc body 41. An air guide gap 43 is formed between the first disc body 41 and the second disc body 42. The first disc body 41 and the second disc body 42 are connected together by a plurality of connecting ribs 44 located in the air guide gap 43. The air guide gap 43 can guide airflow inside the brake disc 40 when the brake disc 40 rotates, so as to reduce the temperature rise of the brake disc 40.

[0023] The axle of this utility model includes the wheel end assembly of the aforementioned commercial vehicle. The other structures of the axle are the same as those in the prior art and will not be described in detail here.

[0024] 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 for a commercial vehicle, characterized in that, This includes axles, wheel hubs, rotors, and brake discs; The hub is fitted onto the axle and pivotally connected to the axle via a bearing. A first connecting ring that protrudes radially outward is provided on the outer edge of the hub. The rotor includes a cylindrical connecting section, a second connecting ring extending radially inward from the outer end of the connecting section, and a connecting disc extending radially outward from the outer end of the connecting section. The connecting disc is used to connect with the rim of the tire. The second connecting ring abuts against the outer side of the first connecting ring, and the second connecting ring and the first connecting ring are fixed together by a plurality of connecting bolts that pass through them. The brake disc extends radially outward from the inner end of the connecting section. The inner diameter of the connecting section is R1, and the outer diameter of the first connecting ring is R2, wherein R1 > R2, so that the rotor can be moved outward and removed from the hub after the connecting bolts are removed.

2. The wheel end assembly of a commercial vehicle as described in claim 1, characterized in that, It also includes a connecting flange, which is attached to the outside of the second connecting ring and the connecting plate. The connecting bolts pass through the inner edge of the connecting flange and the second connecting ring from the outside to the inside and are then screwed onto the first connecting ring. The outer edge of the connecting plate, the connecting flange, and the rim of the tire are locked together by multiple fixing bolts that pass through the three of them.

3. The wheel end assembly of a commercial vehicle as described in claim 2, characterized in that, The connecting plate has multiple radially outward protruding connecting parts, and a recess is formed between adjacent connecting parts by the outer edge of the connecting plate radially inward. The connecting parts are provided with through holes for fixing bolts to pass through.

4. The wheel end assembly for a commercial vehicle as described in claim 3, characterized in that, The outer surface of the second connecting ring and the outer surface of the connecting plate together form a mating plane, and the inner surface of the connecting flange forms a mating plane that fits against the mating plane.

5. The wheel end assembly for a commercial vehicle as described in claim 4, characterized in that, The edge of the mating plane is provided with multiple recesses, each corresponding to a recessed position. The corresponding recesses and recessed positions are aligned in the circumferential direction of the connecting flange and together form a groove.

6. The wheel end assembly of a commercial vehicle as described in claim 2, characterized in that, The connecting flange, connecting plate, and second connecting ring are integrally formed.

7. The wheel end assembly of a commercial vehicle as described in claim 1, characterized in that, The brake disc includes a first disc body extending radially outward from the inner end of the connecting section and a second disc body located inside the first disc body. An air guide gap is formed between the first disc body and the second disc body, and the first disc body and the second disc body are connected together by a plurality of connecting ribs located within the air guide gap.

8. An axle, characterized in that, Includes the wheel end assembly of a commercial vehicle as described in any one of claims 1-7.

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