Hub and brake disc combined structure for axle

Abstract

The hub and brake disc combined structure comprises the brake disc and the hub which are coaxially connected, the brake disc and the hub are provided with central through holes which are coaxially communicated, and a first connecting spigot and a second connecting spigot are symmetrically arranged at the ends, close to each other, of the brake disc and the hub on the outer circumference of the central through holes. The first connecting seam allowance is connected with the second connecting seam allowance, a heat dissipation groove is formed in the outer side surface of the end, close to the second connecting seam allowance, of the hub in the circumferential direction, a first heat dissipation channel is formed in the inner side groove wall of the heat dissipation groove, and the first heat dissipation channel extends in the direction close to the brake disc. The inner side groove walls are the groove walls, close to the brake disc, of the heat dissipation grooves. According to the hub and brake disc combined structure for the axle, connection of the lightweight brake disc and the hub can be achieved, the heat dissipation requirement of the brake disc is met, and use is convenient.

Description

Technical Field

[0001] This utility model relates to the field of axle equipment technology, and in particular to a wheel hub and brake disc combination structure for axles. Background Technology

[0002] In vehicle axle equipment, the wheel hub is connected to the brake disc. Both the wheel hub and the brake disc are usually made of cast iron, which has high structural strength and is relatively heavy. With the introduction of the concept of energy conservation and emission reduction, vehicle lightweighting has become a trend.

[0003] To achieve the goal of reducing the weight of the axle, aluminum alloy wheel hubs have been proposed, such as the utility model patent with authorization announcement number CN216184216U, which discloses an aluminum alloy wheel hub for semi-trailers. By setting double-sided inner sinking rings and weight reduction notches, the weight of the aluminum alloy wheel hub is reduced. At the same time, the structural strength can be met while reducing weight through reinforcing plates and reinforcing ribs, thus meeting the requirements of lightweight design.

[0004] When aluminum alloy is used for the wheel hub, the significant difference in thermal deformation between cast iron and aluminum alloy makes it difficult to continue using cast iron for the brake disc; instead, aluminum alloy is chosen instead. Conventional cast iron brake discs typically consist of a double-layered plate with internal heat dissipation fins. While changing the brake disc material from cast iron to aluminum alloy reduces weight, the structural strength of the brake disc still needs to be maintained. Therefore, solid aluminum alloy brake discs are generally chosen. In this case, heat dissipation becomes a major challenge.

[0005] Based on this, this application proposes a hub and brake disc assembly structure for a vehicle axle to ensure the heat dissipation capacity of the brake disc while reducing weight. Utility Model Content

[0006] This application provides a hub and brake disc assembly structure for a vehicle axle, including a brake disc and a hub coaxially connected. The brake disc and the hub are provided with a central through hole coaxially connected, and a first connecting stop and a second connecting stop are symmetrically provided on the outer circumference of the central through hole at their respective ends. The brake disc and the hub are connected through the first connecting stop and the second connecting stop. The hub has a heat dissipation groove circumferentially formed on the outer surface of the end near the second connecting stop. The heat dissipation groove has a first heat dissipation channel formed on its inner wall. The first heat dissipation channel extends towards the brake disc and passes through the first connecting stop, wherein the inner wall of the heat dissipation groove is the groove wall of the heat dissipation groove near the brake disc.

[0007] In one possible implementation, the first connecting stop and the second connecting stop are provided with a plurality of connecting holes in the circumferential direction, and connecting bolts are installed in the connecting holes, so that the connecting bolts can be screwed into the second connecting stop from the outer end of the brake disc to connect the first connecting stop and the second connecting stop.

[0008] In one possible implementation, the connecting holes are evenly distributed circumferentially, and the first heat dissipation channels are evenly distributed between adjacent connecting holes.

[0009] In one possible implementation, the connecting hole includes a fastening hole and a torque hole that are spaced apart in sequence, wherein the diameter of the torque hole is larger than the diameter of the fastening hole, and a connecting sleeve is embedded in the torque hole in an interference fit manner. The connecting sleeve is distributed in both the first connecting stop and the second connecting stop, and is fitted onto the stud portion of the connecting bolt.

[0010] In one possible implementation, the first heat dissipation channel is an open channel having a first opening and a second opening near both axial ends, and a third opening between the first opening and the second opening and directly opposite the central through hole.

[0011] In one possible implementation, the hub has spokes circumferentially on its outer side, the heat dissipation groove extends to the spokes, and the spokes have a second heat dissipation channel at a position directly opposite the heat dissipation groove.

[0012] In one possible implementation, the hub has a circumferentially threaded hole on the end face of the end furthest from the brake disc.

[0013] In one possible implementation, the wheel hub has an internal thread in the central through hole at the end away from the brake disc.

[0014] Beneficial effects: Compared with the prior art, the wheel hub and brake disc combination structure for axles provided in this application can achieve lightweight connection of brake disc and wheel hub and meet the heat dissipation requirements of brake disc by opening a heat dissipation groove at the second connection stop of the wheel hub, and the heat dissipation groove extends towards the brake disc through the first heat dissipation channel and passes through the first connection stop.

[0015] The first heat dissipation channel is evenly distributed between adjacent connection holes, which can maximize the connection strength between the brake disc and the wheel hub and maximize the heat dissipation effect on the brake disc.

[0016] The connecting hole consists of fastening holes and torque holes arranged at intervals. At the same time, a connecting sleeve is provided in the torque hole. The connecting sleeve is also arranged in the first connecting stop and the second connecting stop, so that the brake disc and the wheel hub can be tightly connected with high connection strength, and the torque transmission between the brake disc and the wheel hub can be ensured through the connecting sleeve.

[0017] A second heat dissipation channel is also provided on the wheel spokes, which can work in conjunction with the first heat dissipation channel and heat dissipation groove to better dissipate heat, thereby further improving the heat dissipation effect of the brake disc.

[0018] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0019] Figure 1 A three-dimensional structural schematic diagram of the hub and brake disc assembly structure used in this application for a vehicle axle is shown.

[0020] Figure 2 An exploded structural diagram of the hub and brake disc assembly structure for axles according to this application is shown.

[0021] Figure 3 A three-dimensional cross-sectional view of the hub and brake disc assembly structure for axles according to this application is shown.

[0022] Figure 4 This paper shows a front sectional view of the hub and brake disc assembly structure for axles according to this application.

[0023] Figure 5 This paper shows a schematic diagram of the front sectional view of the wheel hub in this application from another perspective.

[0024] Figure 6 A rear view structural schematic diagram of the wheel hub in this application is shown.

[0025] Figure 7 A schematic diagram of the rear view structure of the wheel hub in this application is shown from another perspective. Detailed Implementation

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0028] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0029] refer to Figures 1 to 7 This application provides a hub and brake disc assembly structure for a vehicle axle, including a brake disc 10 and a hub 20 coaxially connected. The brake disc 10 and the hub 20 are provided with a central through hole 101 coaxially connected, and a first connecting stop 11 and a second connecting stop 21 are symmetrically provided on the outer circumference of the central through hole 101 at their respective close ends. That is, the brake disc 10 is provided with the first connecting stop 11, and the hub 20 is symmetrically provided with the second connecting stop 21. The brake disc 10 and the hub 20 are connected through the first connecting stop 11 and the second connecting stop 21. The wheel hub 20 has a heat dissipation groove 201 circumferentially formed on the outer surface of the end near the second connecting stop 21. The heat dissipation groove 201 can be evenly distributed circumferentially or only spaced apart. In addition, the heat dissipation groove 201 has a first heat dissipation channel 202 formed on the inner wall of the groove. The first heat dissipation channel 202 extends towards the brake disc 10 and passes through the first connecting stop 11. The inner wall of the groove is the groove wall of the heat dissipation groove 201 near the brake disc 10. In this way, the heat generated by the brake disc during operation can be dissipated through the first heat dissipation channel 202 and the heat dissipation groove 201. This satisfies both the lightweight requirements of the wheel hub 20 and the brake disc 10 on the axle and the heat dissipation requirements of the brake disc 10, making it convenient to use.

[0030] In one embodiment, the first connecting stop 11 and the second connecting stop 21 are provided with a plurality of connecting holes 102 in the circumferential direction, and a connecting bolt 12 is installed in the connecting hole 102, so that the connecting bolt 12 can be screwed into the second connecting stop 21 from the outer end of the brake disc 10 to connect the first connecting stop 11 and the second connecting stop 21.

[0031] In one embodiment, the connecting holes 102 are evenly distributed circumferentially, and the first heat dissipation channels 202 are evenly distributed between two adjacent connecting holes 102, thereby maximizing the connection strength between the brake disc 10 and the wheel hub 20 and maximizing the heat dissipation effect on the brake disc 20.

[0032] In one embodiment, the connecting hole 102 includes a fastening hole 1021 and a torque hole 1022 arranged sequentially at intervals. The diameter of the torque hole 1022 is larger than that of the fastening hole 1021. A connecting sleeve 13 is embedded in the torque hole 1022 with an interference fit. The connecting sleeve 13 is distributed in both the first connecting stop 11 and the second connecting stop 21 and is sleeved on the stud portion of the connecting bolt 12. In this way, on the one hand, the connecting bolt 12 in the fastening hole 1021 and the torque hole 1022 can ensure the connection strength between the brake disc 10 and the wheel hub 20. On the other hand, based on the interference fit relationship between the connecting sleeve 13 and the first connecting stop 11 and the second connecting stop 21, the torque transmission between the brake disc 10 and the wheel hub 20 can also be effectively ensured.

[0033] In one embodiment, the first heat dissipation channel 202 is an open channel with a first opening and a second opening near both ends of the axial direction, and a third opening 203 between the first opening and the second opening and directly opposite the central through hole 101. Thus, the heat dissipation area of ​​the brake disc can be further increased through the third opening 203, so that the heat generated by the brake disc 10 can be dissipated more quickly and the heat dissipation effect is better.

[0034] In one embodiment, the hub 20 has spokes 22 circumferentially arranged on its outer side, wherein the heat dissipation groove 201 extends to the spokes 22, and the spokes 22 have a second heat dissipation channel 204 at a position opposite to the heat dissipation groove 201, so that the heat generated by the brake disc can be quickly dissipated through the heat dissipation groove 201 and through the second heat dissipation channel 204, thereby further improving the heat dissipation effect.

[0035] In one embodiment, combined Figure 6 The wheel hub 20 has a circumferential threaded hole 205 on the end face away from the brake disc 20 for connecting the wheel hub cover, which can realize oil lubrication or grease lubrication of the axle at the wheel hub 20.

[0036] In another embodiment, combined with Figure 7 The wheel hub 20 has an internal thread 23 in the central through hole 101 at the end away from the brake disc 20. At this time, the wheel hub cover can be directly screwed to the position of the internal thread 23 for installation, and the axle can be grease lubricated at the wheel hub 20.

[0037] It should be noted that the terms "first" and "second" used in this application are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0038] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A hub and brake disc assembly structure for a vehicle axle, characterized in that, The device includes a brake disc and a hub connected coaxially. The brake disc and the hub are provided with a central through hole that is coaxially connected. A first connecting stop and a second connecting stop are symmetrically provided on the outer circumference of the central through hole at their respective ends that are close to each other. The brake disc and the hub are connected through the first connecting stop and the second connecting stop. The hub has a heat dissipation groove circumferentially formed on the outer surface of the end near the second connecting stop. The heat dissipation groove has a first heat dissipation channel formed on its inner wall. The first heat dissipation channel extends toward the brake disc and passes through the first connecting stop. The inner wall of the groove is the groove wall of the heat dissipation groove that is close to the brake disc.

2. The hub and brake disc assembly structure for an axle as described in claim 1, characterized in that, The first connecting stop and the second connecting stop are provided with a plurality of connecting holes in the circumferential direction. Connecting bolts are installed in the connecting holes so that the connecting bolts can be screwed into the second connecting stop from the outer end of the brake disc to connect the first connecting stop and the second connecting stop.

3. The hub and brake disc assembly structure for an axle as described in claim 2, characterized in that, The connecting holes are evenly distributed circumferentially, and the first heat dissipation channels are evenly distributed between two adjacent connecting holes.

4. The hub and brake disc assembly structure for an axle as described in claim 3, characterized in that, The connecting hole includes fastening holes and torque holes distributed sequentially at intervals, wherein the diameter of the torque hole is larger than the diameter of the fastening hole, and a connecting sleeve is embedded in the torque hole in an interference fit manner. The connecting sleeve is distributed in both the first connecting stop and the second connecting stop, and is sleeved on the stud portion of the connecting bolt.

5. The hub and brake disc assembly structure for an axle as described in claim 3, characterized in that, The first heat dissipation channel is an open channel, having a first opening and a second opening near both ends of the axial direction, and a third opening between the first opening and the second opening and directly opposite the central through hole.

6. The hub and brake disc assembly structure for an axle as described in claim 1, characterized in that, The hub has spokes circumferentially on its outer side, the heat dissipation groove extends to the spokes, and the spokes have a second heat dissipation channel at a position directly opposite the heat dissipation groove.

7. The hub and brake disc assembly structure for an axle as described in claim 1, characterized in that, The wheel hub has a circumferential threaded hole on the end face away from the brake disc.

8. The hub and brake disc assembly structure for an axle as described in claim 1, characterized in that, The wheel hub has an internal thread in the central through hole at the end away from the brake disc.

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