Axle hub

Abstract

The axle hub comprises a hub body, the hub body is provided with a connecting spigot, the connecting spigot is provided with a connecting end face and an outer side face used for being connected with the connecting end face in the circumferential direction, and connecting holes used for being connected with a brake disc are formed in the connecting end face in the circumferential direction. A heat dissipation groove is formed in the outer side face of the connecting seam allowance in the circumferential direction, a first heat dissipation channel is formed in the outer side groove wall of the heat dissipation groove, the first heat dissipation channel penetrates to the connecting end face from the interior of the connecting seam allowance, and the outer side groove wall is the side wall, close to the connecting end face, of the heat dissipation groove. According to the axle hub provided by the invention, the heat dissipation capability of the brake disc can still be greatly improved under the condition that both the axle hub and the brake disc are made of aluminum alloy materials, so that the purposes of meeting the heat dissipation requirement and reducing weight can be met at the same time.

Description

Technical Field

[0001] This utility model relates to the field of wheel hub equipment technology, and in particular to axle wheel hubs. Background Technology

[0002] In vehicle axle equipment, the wheel hub is generally directly 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 considerable weight. With the advocacy of energy conservation and emission reduction, lightweight vehicle development 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] Generally, when aluminum alloy is used for the wheel hub, it's not advisable to continue using cast iron for the brake disc, which is directly connected to the hub. This is because cast iron and aluminum alloy exhibit significantly different thermal deformation characteristics. Therefore, it's best to choose aluminum alloy for the brake disc as well. 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 an axle hub to solve the heat dissipation problem of the solid aluminum alloy brake disc that is directly connected to the axle hub. Utility Model Content

[0006] This application provides an axle hub that can significantly improve the heat dissipation capacity of the brake disc even when both the axle hub and the brake disc are made of aluminum alloy, thereby simultaneously meeting the heat dissipation requirements and the purpose of weight reduction.

[0007] This application provides an axle wheel hub, including a wheel hub body. The wheel hub body is provided with a connecting stop. The connecting stop has a connecting end face and an outer side face that connects to the connecting end face in the circumferential direction. The connecting end face has a connecting hole for connecting a brake disc in the circumferential direction. The connecting stop has a heat dissipation groove in the circumferential direction on the outer side face. The heat dissipation groove has a first heat dissipation channel in the outer groove wall. The first heat dissipation channel extends from the inside of the connecting stop to the connecting end face. The outer groove wall is the side wall of the heat dissipation groove near the connecting end face.

[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 first heat dissipation channel is an open channel having a first opening and a second opening respectively connecting the connecting end face and the heat dissipation groove, and a third opening located between the first opening and the second opening and facing the inner side, wherein the inner side and the outer side are two opposing surfaces.

[0010] In one possible implementation, the connecting hole includes a series of fastening holes and torque holes spaced apart, wherein the diameter of the torque hole is larger than the diameter of the fastening hole, and the torque hole is used to fit a connecting sleeve in an interference fit manner, so that the fastening hole and the connecting sleeve can be bolted to the brake disc and the wheel hub body respectively.

[0011] In one possible implementation, the hub body 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 body has a circumferentially threaded hole on the end face of the end furthest from the connecting end face.

[0013] In one possible implementation, the hub body has an internal thread in an axial central through hole at one end away from the connecting end face.

[0014] Beneficial effects: Compared with the prior art, the axle wheel hub provided in this application opens heat dissipation grooves on the connecting stop, and the heat dissipation grooves are connected to the connecting end face through the first heat dissipation channel, so that the heat of the brake disc can be directly dissipated through the first heat dissipation channel and the heat dissipation grooves. Thus, it can meet the heat dissipation requirements of the brake disc while satisfying the lightweighting of the brake disc and wheel hub body, and is convenient to use.

[0015] The first heat dissipation channel is an open channel. In addition to the first and second openings connecting the connecting end face and the heat dissipation groove, a third opening is provided on the inner side, so that the heat generated by the brake disc can enter the heat dissipation groove more quickly for heat dissipation, resulting in better heat dissipation effect.

[0016] The connecting hole on the connecting end face includes both a fastening hole and a torque hole. A connecting sleeve is embedded in the torque hole with an interference fit. The fastening hole and the connecting sleeve are respectively connected to the brake disc and the wheel hub body by bolts, which ensures both a tight connection between the brake disc and the wheel hub body and a stable transmission of torque between the brake disc and the wheel hub body.

[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 schematic diagram of the axle hub of this application is shown.

[0020] Figure 2 A partial cross-sectional view of the axle hub of this application is shown.

[0021] Figure 3 The diagram shows a front sectional view of the axle hub structure of this application.

[0022] Figure 4 This diagram shows a front view sectional view of the axle hub of this application from another perspective.

[0023] Figure 5 The diagram shows a rear view of the axle hub in one embodiment of the present application.

[0024] Figure 6 A schematic diagram of the axle hub of this application is shown in another embodiment. Detailed Implementation

[0025] 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.

[0026] 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.

[0027] 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.

[0028] refer to Figures 1 to 6 This application provides an axle hub, including a hub body 10. The hub body 10 is provided with a connecting stop 11, wherein the connecting stop 11 has a connecting end face 111 and an outer side face 112 that connects to the connecting end face 111 in the circumferential direction. The hub body 10 and the connecting stop 11 also share an axial central through hole 101 for mounting bearings and axles. The surface of the connecting stop 11 at the axial central through hole 101 is the inner side face 113 opposite to the outer side face 112. In addition, the connecting end face 111 is provided with a connecting hole 102 for connecting the brake disc in the circumferential direction, and the connecting stop 11 is provided with a heat dissipation groove 103 in the circumferential direction on the outer side surface 112. At the same time, the heat dissipation groove 103 is provided with a first heat dissipation channel 104 on the outer side wall of the heat dissipation groove 103. The first heat dissipation channel 104 extends from the inside of the connecting stop 11 to the connecting end face 111, thereby realizing heat dissipation of the brake disc. The outer side wall is the side wall of the heat dissipation groove 103 near the connecting end face 111.

[0029] In simple terms, when the brake disc and the wheel hub body 10, which are both made of aluminum alloy, are connected, the heat generated by the brake disc can be dissipated through the first heat dissipation channel 104 and the heat dissipation groove 103. This satisfies both the need for lightweight axle wheel hub and brake disc and the need for heat dissipation of brake disc, making it convenient to use.

[0030] In one embodiment, the connecting holes 102 are evenly distributed circumferentially, while the first heat dissipation channels 104 are evenly distributed between adjacent connecting holes 102, thereby maximizing heat dissipation for the brake disc.

[0031] In one embodiment, the first heat dissipation channel 104 is an open channel with a first opening and a second opening respectively connecting the connecting end face 111 and the heat dissipation groove 103, and a third opening 105 located between the first opening and the second opening and facing the inner side 113. The inner side 113 and the outer side 112 are two opposing surfaces, namely the outer surface 112 of the connecting stop 11 and the surface of the axial central through hole 101 on the connecting stop 11. Compared with the structure of a conventional double-opening heat dissipation channel, the third opening 105 can further increase the heat dissipation area, so that the heat generated by the brake disc can be dissipated more quickly and the heat dissipation effect is better.

[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. The torque hole 1022 is used to embed a connecting sleeve 12 in an interference fit manner, so that the fastening hole 1021 and the connecting sleeve 12 can be connected to the brake disc and the wheel hub body 10 respectively by bolts 13. In this way, on the one hand, the bolts 13 in the fastening hole 1021 can firmly connect the brake disc and the wheel hub body 10. On the other hand, the interference fit connecting sleeve 12 in the torque hole 1022 can stably transmit the torque force from the brake disc to the wheel hub body 10 through the bolts 13. Thus, the purpose of connection strength and torque force transmission can be satisfied at the same time. The structure is simple and easy to process and form.

[0033] In one embodiment, the hub body 10 has spokes 14 circumferentially arranged on its outer side, wherein the heat dissipation groove 103 extends to the spokes 14, and the spokes 14 have a second heat dissipation channel 106 at a position directly opposite the heat dissipation groove 103, so that the heat generated by the brake disc can be quickly dissipated through the heat dissipation groove 103 and the second heat dissipation channel 106, which can further improve the heat dissipation effect.

[0034] In one embodiment, combined Figure 5 The hub body 10 has a connecting threaded hole 107 on the end face away from the connecting end face 111 along the circumferential direction, which is used to connect the hub cover, so that the axle hub can be lubricated with oil or grease.

[0035] In another embodiment, combined with Figure 6 The hub body 10 has an internal thread 15 in the axial center through hole 101 at one end away from the connecting end face 111. At this time, the hub cover can be directly screwed to the position of the internal thread 15 to achieve installation, and the axle hub can be grease lubricated.

[0036] 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.

[0037] 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. Axle hub, characterized in that, The device includes a hub body, which has a connecting stop. The connecting stop has a connecting end face and an outer side face that connects to the connecting end face in the circumferential direction. The connecting end face has a connecting hole for connecting a brake disc in the circumferential direction. The connecting stop has a heat dissipation groove in the circumferential direction on the outer side face. The heat dissipation groove has a first heat dissipation channel in the outer groove wall. The first heat dissipation channel extends from the inside of the connecting stop to the connecting end face. The outer groove wall is the side wall of the heat dissipation groove near the connecting end face.

2. The axle hub as described in claim 1, characterized in that, The connecting holes are evenly distributed circumferentially, and the first heat dissipation channels are evenly distributed between adjacent connecting holes.

3. The axle hub as described in claim 2, characterized in that, The first heat dissipation channel is an open channel, having a first opening and a second opening respectively connecting the connecting end face and the heat dissipation groove, and a third opening between the first opening and the second opening and facing the inner side. The inner side and the outer side are two opposing surfaces.

4. The axle hub as described in claim 2, 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 the torque hole is used to fit a connecting sleeve in an interference fit manner, so that the fastening hole and the connecting sleeve can be connected to the brake disc and the wheel hub body respectively by bolts.

5. The axle hub as described in claim 1, characterized in that, The hub body 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 the position directly opposite the heat dissipation groove.

6. The axle hub as described in claim 1, characterized in that, The hub body has a threaded hole in the circumferential direction on the end face away from the connecting end face.

7. The axle hub as described in claim 1, characterized in that, The hub body has an internal thread in the axial central through hole at the end away from the connecting end face.

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