Wheel end assembly for an axle and axle

Abstract

The utility model discloses a wheel end assembly of axle and axle, wheel end assembly of axle includes axle, wheel hub, brake disc and connecting flange, wheel hub is set in the outside of axle, and the bearing of wheel hub and axle is arranged between wheel hub and axle, and wheel hub is pivoted, brake disc includes connecting section, the disc body of one end in connecting section, the connecting disc of the other end in connecting section and along the radial outward extension of axle, and connecting section is set in the outside of wheel hub and forms first gap between wheel hub, connecting flange includes first connecting part, the second connecting part of first connecting part periphery, and first connecting part is fixed with wheel hub, and the second connecting part is fixed with connecting disc, and connecting flange and connecting disc form a second gap along the radial extension of axle between connecting flange and connecting disc, and second gap and first gap form a wind channel of intercommunication. The utility model improves the heat dissipation effect of brake disc, and effectively reduces the temperature rise of brake disc, improves the driving safety of vehicle.

Description

Technical Field

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

[0002] Commercial vehicles typically have wheel end assemblies at both ends of the axle for mounting tires and the braking system. Existing wheel end assemblies generally include an axle, wheel hub, and brake disc. The wheel hub is connected to the outside of the axle via bearings, allowing it to rotate relative to the axle. The brake disc is bolted to the wheel hub, allowing it to rotate with the hub. The tire rim is connected to the wheel hub. When the vehicle brakes, the friction pads on the brake caliper contact and rub against the brake disc, generating braking force. Simultaneously, the brake disc's temperature rises due to friction. Excessive temperature can affect braking force and even cause thermal cracks in the brake disc, posing a safety risk. To reduce brake disc temperature rise, existing brake discs are typically designed with air guide gaps. When the brake disc rotates, air flows through these gaps, exchanging heat with the disc body. While this structure reduces brake disc temperature rise, the airflow is limited to the gaps within the disc body and cannot effectively reduce the temperature rise of other parts of the brake disc. Therefore, the overall cooling effect on the brake disc is poor. 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 for an axle that can improve the heat dissipation effect of the brake disc and effectively reduce the temperature rise of the brake disc.

[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: The wheel end assembly of the axle includes the axle, wheel hub, brake disc, and connecting flange; The wheel hub is fitted onto the outside of the axle, and a bearing is installed between the wheel hub and the axle to pivotally connect the wheel hub and the axle; The brake disc includes a connecting section, a disc body located at one end of the connecting section, and a connecting disc located at the other end of the connecting section and extending radially outward along the axle. The connecting section is sleeved on the outside of the wheel hub and forms a first gap with the wheel hub. The connecting flange includes a first connecting part and a second connecting part located around the periphery of the first connecting part. The first connecting part is fixed to the wheel hub, and the second connecting part is fixed to the connecting plate. A second gap extending radially along the axle is formed between the connecting flange and the connecting plate. The second gap communicates with the first gap to form an air guide channel.

[0006] The outer edge of the wheel hub is provided with a connecting ring that protrudes outward along the radial direction of the axle. The first connecting part of the connecting flange is attached to the outside of the connecting ring, and the first connecting part and the connecting ring are fixed together by a plurality of connecting bolts that pass through them.

[0007] The first connecting part extends into the inner side of the connecting section, and a third gap is formed between the outer edge surface of the first connecting part and the inner edge surface of the connecting section. One end of the third gap is connected to the first gap and the other end is connected to the second gap.

[0008] A fourth gap is formed between the outer edge of the connecting ring and the inner edge of the connecting segment. One end of the fourth gap is connected to the third gap, and the other end is connected to the first gap.

[0009] The inner edge of the first connecting part is provided with a plurality of first recesses that are recessed outward along the radial direction of the axle, and the outer edge of the connecting ring is provided with a plurality of second recesses that are recessed inward along the radial direction of the axle. The plurality of first recesses are respectively aligned with the plurality of second recesses along the axial direction of the axle so that the first recesses and the second recesses together form a ventilation groove.

[0010] The outer edge of the wheel hub is provided with a relief recess that extends axially along the axle and is directly opposite the connecting bolt in the radial direction of the axle to avoid the nut of the connecting bolt.

[0011] The second connecting part is fixed together with the connecting plate by multiple locking bolts; the connecting section is cylindrical, with an inner diameter of R1 and an outer diameter of R2 for the connecting ring. R1 is greater than R2 so that the projection of the wheel hub on the cross-section of the axle falls inside the inner edge of the connecting section.

[0012] The connecting plate has multiple bosses on its surface facing the connecting flange, and these bosses abut against the second connecting part of the connecting flange.

[0013] The second connecting part of the connecting flange has multiple bosses on the surface facing the connecting plate, and these multiple second bosses abut against the connecting plate.

[0014] To achieve the second objective mentioned above, this utility model adopts the following technical solution: Axle, including the wheel end assembly of the aforementioned axle.

[0015] The beneficial effects of this utility model are as follows: In this invention, the first gap connects to the internal space of the brake disc, and the second gap connects to the external environment surrounding the brake disc. The air guide channel formed by the connection of the first gap and the second gap connects the internal space of the brake disc with the external environment. When the brake disc rotates with the wheel hub, the airflow flows through the air guide channel. When the airflow flows through the air guide channel, it exchanges heat with the connecting section and connecting disc of the brake disc, carrying away the heat generated by the brake disc, thereby improving the heat dissipation effect of the brake disc, effectively reducing the temperature rise of the brake disc, and improving the driving safety of the vehicle. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is an installation diagram of the present invention; Figure 3 This is a cross-sectional view of the present invention. Detailed Implementation

[0017] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments: like Figure 1 , 2 As shown in Figure 3, this utility model discloses a wheel end assembly for an axle, which includes an axle 10, a wheel hub 20, a brake disc 30, and a connecting flange 40. The wheel hub 20 is generally cylindrical and is fitted onto the outside of the axle 10. Two bearings 21 are provided between the wheel hub 20 and the axle 10, and the wheel hub 20 is pivotally connected to the axle 10 through the two bearings 21. The brake disc 30 includes a connecting section 32, a disc body 31 located at the inner end of the connecting section 32, and a connecting disc 33 located at the outer end of the connecting section 32. The disc body 31 is used to cooperate with the brake caliper of the vehicle braking system to form braking force. The connecting disc 33 extends radially outward from the connecting section 32 along the axle 10. The connecting section 32 is fitted onto the periphery of the wheel hub 20. The outer diameter of the wheel hub 20 is set to be smaller than the inner diameter of the connecting section 32, so that the connecting section 32 can be fitted onto the outside of the wheel hub 20, and a first gap 201 is formed between the connecting section 32 and the wheel hub 20. The connecting flange 40 includes a first connecting portion 41 and a second connecting portion 42 located around the first connecting portion 41. Both the first connecting portion 41 and the second connecting portion 42 are annular in shape. The first connecting portion 41 is fixedly connected to the wheel hub 20, and the second connecting portion 42 is fixedly connected to the connecting disc 33. A second gap 401 is formed between the connecting flange 40 and the connecting disc 33. The second gap 401 communicates with the first gap 201 to form an air guide channel. The first gap 201 communicates with the internal space of the brake disc 30, and the second gap 401 connects to... The air duct formed by the connection of the first gap 201 and the second gap 401 with the external environment of the brake disc 30 connects the internal space of the brake disc 30 with the external environment. When the brake disc 30 rotates with the wheel hub 20, the airflow will flow through the air duct. When the airflow flows through the air duct, it will exchange heat with the connecting section 32 and the connecting disc 33 of the brake disc 30, and carry away the heat generated by the brake disc 30, thereby improving the heat dissipation effect of the brake disc 30, effectively reducing the temperature rise of the brake disc 30, and improving the driving safety of the vehicle.

[0018] To facilitate the connection between the connecting flange 40 and the hub 20, a connecting ring 22 is provided on the outer edge of the hub 20, protruding outward along the radial direction of the axle 10. The first connecting part 41 of the connecting flange 40 is abutted against the outer side of the connecting ring 22. Multiple connecting bolts 50 are used to pass through the first connecting part 41 of the connecting flange 40 and the connecting ring 22 of the hub 20 from the outside to the inside, and the two are fixed together.

[0019] The first connecting part 41 of the connecting flange 40 is located on the inner side compared to the second connecting part 42, so that the first connecting part 41 can be inserted into the interior of the connecting section 32 from the outside to the inside and then abut against the connecting ring 22. A third gap 402 is formed between the outer edge surface of the first connecting part 41 and the inner edge surface of the connecting section 32. The outer end of the third gap 402 is connected to the second gap 401, and the inner end is connected to the first gap 201. Thus, the first gap 201 and the second gap 401 are connected by the third gap 402. It can also be considered that the first gap 201, the third gap 402 and the second gap 401 are used together to form the above-mentioned air guide channel.

[0020] The outer diameter of the connecting ring 22 is smaller than the inner diameter of the connecting section 32, so that a fourth gap 202 is formed between the outer edge surface of the connecting ring 22 and the inner edge surface of the connecting section 32. One end of the fourth gap 202 is connected to the third gap 402 and the other end is connected to the first gap 201. That is to say, the above-mentioned air guiding channel is specifically composed of the first gap 201, the fourth gap 202, the third gap 402, and the second gap 401 connected in sequence.

[0021] The inner edge of the first connecting portion 41 of the connecting flange 40 is provided with a plurality of first recesses 411 recessed radially outward along the axle 10, and the outer edge of the connecting ring 22 is provided with a plurality of second recesses 221 recessed radially inward along the axle 10. After the first connecting portion 41 abuts against the connecting ring 22, the plurality of first recesses 411 and the plurality of second recesses 221 are respectively aligned along the circumference of the axle 10, thereby forming a ventilation groove through which air circulation is achieved, further improving the heat dissipation effect of the brake disc 30. Bolt holes are provided on two adjacent first recesses 411 on the first connecting portion 41, and the position for the connecting bolt 50 to pass through is set between adjacent first recesses 411. Bolt holes are provided on two adjacent second recesses 221 on the connecting ring 22, and the position for the connecting bolt 50 to pass through is set between adjacent second recesses 221.

[0022] A clearance recess 23 extending axially along the axle 10 is provided on the outer edge surface of the wheel hub 20. The clearance recess 23 is positioned opposite the connecting bolt 50. The clearance recess 23 avoids the nut of the connecting bolt 50, thus preventing interference between the nut of the connecting bolt 50 and the wheel hub 20. This allows the use of a larger diameter connecting bolt 50 to connect the first connecting part 41 and the connecting ring 22. Since part of the nut of the connecting bolt 50 is placed in the clearance recess 22, the insertion position of the connecting bolt 50 is closer to the central axis of the axle 10, which helps to reduce the outer diameter of the connecting ring 22, thereby reducing the maximum outer diameter of the wheel hub 20.

[0023] In this invention, the second connecting part 42 and the connecting disc 33 are fixed together by multiple locking bolts 60. These locking bolts 60 can pass through the second connecting part 42, the connecting disc 33, and the wheel rim, fixing the connecting flange 40 to the brake disc 30 while simultaneously fixing the connecting disc 40 to the wheel hub. The connecting section 32 of the brake disc 30 has a cylindrical structure with an inner diameter of R1. The outer diameter of the connecting ring 22 on the wheel hub 20 is R2, meaning the maximum outer diameter of the wheel hub 20 is R2. The diameter is R2, where R1 is greater than R2, so that the projection of the wheel hub 20 on the cross-section of the axle 10 is entirely inside the inner edge of the threaded connection section 32. Thus, when maintenance of the wheel hub assembly is required, the connecting bolts 50 and locking bolts 60 can be removed, and the connecting flange 30 can be removed. The brake disc 30 can be removed from the end of the axle 10 without removing the wheel hub 20, or the wheel hub 20 can be removed from the end of the axle 10 without removing the brake disc 30, thereby facilitating the maintenance of the wheel end assembly.

[0024] In this invention, to form a second gap 401 between the connecting flange 40 and the connecting disc 33 of the brake disc 30, multiple bosses 331 can be provided on the surface of the connecting disc 33 facing the connecting flange 30. These bosses 331 abut against the second connecting portion 42 of the connecting flange 40. After the second connecting portion 42 of the connecting flange 40 is mated with the connecting disc 33 and locked in place using the locking bolts 60 as described above, the bosses 331 abut against the second connecting portion 42 of the connecting flange 40, forming a second gap 401 between the portion of the connecting disc 33 on which the bosses 331 are provided and the second connecting portion 42 of the connecting flange 40. In other embodiments, the bosses 331 can also be provided on the second connecting portion 42 of the connecting flange 40, so that the bosses 331 abut against the connecting disc 33.

[0025] The axle of this utility model includes the wheel end assembly described above. The other structures of the axle are the same as those in the prior art and will not be described in detail here.

[0026] 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 of an axle, characterized in that, This includes axles, wheel hubs, brake discs, and connecting flanges; The wheel hub is fitted onto the outside of the axle, and a bearing is installed between the wheel hub and the axle to pivotally connect the wheel hub and the axle; The brake disc includes a connecting section, a disc body located at one end of the connecting section, and a connecting disc located at the other end of the connecting section and extending radially outward along the axle. The connecting section is sleeved on the outside of the wheel hub and forms a first gap with the wheel hub. The connecting flange includes a first connecting part and a second connecting part located around the periphery of the first connecting part. The first connecting part is fixed to the wheel hub, and the second connecting part is fixed to the connecting plate. A second gap extending radially along the axle is formed between the connecting flange and the connecting plate. The second gap communicates with the first gap to form an air guide channel.

2. The wheel end assembly of the axle as described in claim 1, characterized in that, The outer edge of the wheel hub is provided with a connecting ring that protrudes outward along the radial direction of the axle. The first connecting part of the connecting flange is attached to the outside of the connecting ring, and the first connecting part and the connecting ring are fixed together by a plurality of connecting bolts that pass through them.

3. The wheel end assembly of the axle as described in claim 2, characterized in that, The first connecting part extends into the inner side of the connecting section, and a third gap is formed between the outer edge surface of the first connecting part and the inner edge surface of the connecting section. One end of the third gap is connected to the first gap and the other end is connected to the second gap.

4. The wheel end assembly of the axle as described in claim 3, characterized in that, A fourth gap is formed between the outer edge of the connecting ring and the inner edge of the connecting segment. One end of the fourth gap is connected to the third gap, and the other end is connected to the first gap.

5. The wheel end assembly of the axle as described in claim 2, characterized in that, The inner edge of the first connecting part is provided with a plurality of first recesses that are recessed outward along the radial direction of the axle, and the outer edge of the connecting ring is provided with a plurality of second recesses that are recessed inward along the radial direction of the axle. The plurality of first recesses are respectively aligned with the plurality of second recesses along the axial direction of the axle so that the first recesses and the second recesses together form a ventilation groove.

6. The wheel end assembly of the axle as described in claim 2, characterized in that, The outer edge of the wheel hub is provided with a relief recess that extends axially along the axle and is directly opposite the connecting bolt in the radial direction of the axle to avoid the nut of the connecting bolt.

7. The wheel end assembly of the axle as described in claim 2, characterized in that, The second connecting part is fixed together with the connecting plate by multiple locking bolts; the connecting section is cylindrical, with an inner diameter of R1 and an outer diameter of R2 for the connecting ring. R1 is greater than R2 so that the projection of the wheel hub on the cross-section of the axle falls inside the inner edge of the connecting section.

8. The wheel end assembly of the axle as claimed in claim 1, characterized in that, The connecting plate has multiple bosses on its surface facing the connecting flange, and these bosses abut against the second connecting part of the connecting flange.

9. The wheel end assembly of the axle as claimed in claim 1, characterized in that, The second connecting part of the connecting flange has multiple bosses on the surface facing the connecting plate, and these multiple second bosses abut against the connecting plate.

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

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