Brake disc structure and axle

Abstract

The utility model discloses a brake disc structure and an axle, the brake disc structure comprises a brake disc, and the brake disc comprises a first disc body and a second disc body; the first disc body is provided with a first outer disc face and a first inner disc face located on the inner side of the first outer disc face, the first inner disc face protrudes inwards to form a plurality of first protruding parts, and the first protruding parts are distributed in the circumferential direction of the brake disc. The second disc body is located on the inner side of the first disc body and provided with a second inner disc face and a second outer disc face located on the outer side of the second inner disc face, and the second outer disc face protrudes outwards to form second protruding parts which correspond to the first protruding parts and are fixedly connected with the first disc body. A second protruding part and a first protruding part are fixedly connected and define a closed cavity with the first inner disc face and the second outer disc face, the closed cavity is filled with metal, and when the temperature of the brake disc rises to the melting point of the metal, the metal begins to melt, so that heat can be absorbed, the heat dissipation effect is improved, and the temperature rising speed of the brake disc is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a brake disc structure and a vehicle axle. Background Art

[0002] The brake disc of a heavy vehicle brake is an important component of the brake system, and rotates with the axle when the vehicle is moving. The existing brake disc structure includes a brake disc, and the brake disc includes a first disc body and a second disc body fixedly connected to the first disc body. When the vehicle brakes, the brake pad of the brake clamps the first disc body and the second disc body of the brake disc, so that friction is generated between the brake pad and the brake disc to form a braking force, that is, during the braking process, the brake pad and the brake disc generate heat due to friction. However, the heat dissipation effect of the above structure is poor. If the brake is braked frequently, for a long time or at high speed, the brake disc will produce brake attenuation due to excessive temperature, which will reduce the braking performance, reduce the braking force, or even fail to brake, affecting driving safety. Utility Model Content

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a brake disc structure and axle with a simple structure that improves heat dissipation by filling metal in a closed chamber surrounded by a first protrusion, a second protrusion, a first inner disc surface and a second outer disc surface.

[0004] To achieve the above purpose, the embodiment of the utility model adopts the following technical solutions:

[0005] A brake disc structure, comprising a brake disc, wherein the brake disc comprises a first disc body and a second disc body;

[0006] The first disc body comprises a first outer disc surface and a first inner disc surface located inside the first outer disc surface, the first inner disc surface is provided with a plurality of first convex portions extending inwardly, and the plurality of first convex portions are distributed along the circumference of the brake disc;

[0007] The second disk body is located on the inner side of the first disk body and has a second inner disk surface and a second outer disk surface located on the outer side of the second inner disk surface. The second outer disk surface protrudes outward corresponding to each of the first protrusions and has a second protrusion fixedly connected to the first disk body. The second protrusion is fixedly connected to the first protrusion and the two, the first inner disk surface and the second outer disk surface form a closed chamber, and the closed chamber is filled with metal.

[0008] Furthermore, the first protrusion extends along the circumferential direction of the brake disc, the second protrusion extends along the radial direction of the brake disc, and the distance between two adjacent second protrusions gradually increases toward the outer peripheral wall of the second disc body.

[0009] Furthermore, one of every two adjacent second protrusions is inclined relative to the other, and the plurality of second protrusions have the same inclination direction and the same inclination angle.

[0010] Further, the first protrusion extends along the circumference of the brake disc to form a first connecting rib, and each of the second protrusions includes a plurality of second connecting ribs extending outward from the second outer disc surface, and the plurality of second connecting ribs surround an accommodating cavity, and the accommodating cavity has an opening, and the opening cooperates with the first connecting rib to be closed, and the accommodating cavity, the first inner disc surface, and the second outer disc surface constitute the closed chamber.

[0011] Furthermore, the second connecting rib extends along the radial direction of the brake disc and toward the outer peripheral wall of the second disc body, and there is a distance between the second connecting rib and the outer peripheral wall of the second disc body, and the opening is located at an end of the accommodating cavity away from the outer peripheral wall of the second disc body.

[0012] Furthermore, the plurality of the first connecting ribs and the plurality of the second connecting ribs are arc-shaped and distributed in a ring array with the axis of the brake disc as the center, and the metal is tin alloy, zinc alloy or sodium metal.

[0013] Further, the first disk body has a center hole passing through it along the axial direction of the brake disk, the multiple first protrusions surround the outer side of the center hole and are close to the center hole relative to the outer peripheral wall of the first disk body, and the second disk body is concavely formed inwardly from the second outer disk surface to form a recess, the recess corresponds to the center hole and has a through hole passing through it along the axial direction of the brake disk, the through hole corresponds to the center hole, and the multiple second protrusions surround the outer side of the recess.

[0014] Furthermore, the plurality of first protrusions are evenly distributed along the circumference of the brake disc and are welded and fixed to the plurality of second protrusions and the first inner disc surface. The recess is provided with a plurality of bolt holes passing through it along the axial direction of the brake disc, and the plurality of bolt holes surround the outer side of the through hole.

[0015] The brake disc structure of the utility model is formed by protruding a plurality of first protrusions on the first inner disc surface, and protruding a plurality of second protrusions on the second outer disc surface, a second protrusion is fixedly connected to a first protrusion, and the two and the first inner disc surface and the second outer disc surface form a closed chamber, and the closed chamber is filled with metal. When the vehicle brakes frequently or for a long time, the brake disc heats up rapidly due to the large amount of heat generated by friction. When the temperature of the brake disc rises to the melting point of the metal, the metal begins to melt, thereby absorbing heat, improving the heat dissipation effect, and reducing the heating speed of the brake disc. When the braking ends, the brake disc gradually cools down, the metal solidifies and releases the collected heat. The brake disc structure of the utility model is simple, has good heat dissipation effect, is easy to process and is easy to install.

[0016] An embodiment of the utility model further provides a vehicle axle, comprising a brake, wherein the brake comprises the brake disc structure described in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial exploded schematic diagram of the brake disc structure of an embodiment of the utility model;

[0018] Figure 2 for Figure 1 A partial stereoscopic cross-sectional view from another perspective of the combined state;

[0019] Figure 3 for Figure 2 Side view of

[0020] Figure 4 for Figure 3 AA direction cross-sectional view. DETAILED DESCRIPTION

[0021] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described:

[0022] like Figures 1 to 4 As shown, an embodiment of the utility model provides a brake disc structure, which is applied to the brake of a heavy vehicle, including a brake disc 1, the brake disc 1 includes a first disc body 11 and a second disc body 12, and the first disc body 11 and the second disc body 12 are fixedly connected.

[0023] like Figure 1 , Figure 2 As shown, the first disc body 11 is circular and has a first outer disc surface 111 and a first inner disc surface 112 located on the inner side of the first outer disc surface 111. The first inner disc surface 112 has a plurality of first protrusions 1121 protruding inwardly. The plurality of first protrusions 1121 are evenly distributed along the circumference of the brake disc 1, that is, the plurality of first protrusions 1121 are evenly distributed along the circumference of the brake disc 1. In this embodiment, the first disc body 11 is cast, and there are 8 first protrusions 1121. A center hole 113 is provided in the middle part of the first disc body 11 along the axial direction of the brake disc 1, and the 8 first protrusions 1121 surround the outside of the center hole 113 and are close to the center hole 113 relative to the outer peripheral wall of the first disc body 11.

[0024] like Figure 1 , Figure 2As shown, the second disc body 12 is circular and is formed by casting. The second disc body 12 is located inside the first disc body 11 and has a second inner disc surface 121 and a second outer disc surface 122 located outside the second inner disc surface 121. The middle part of the second disc body 12 is recessed inward from the second outer disc surface 122 to form a recess 123. The recess 123 corresponds to the center hole 113 and has a through hole 1231 penetrating it along the axial direction of the brake disc 1. The through hole 1231 corresponds to the center hole 113. The recess 123 also has a plurality of bolt holes 1232 penetrating it along the axial direction of the brake disc 1. The plurality of bolt holes 1232 are used to connect with the axle and surround the outside of the through hole 1231. Corresponding to each first convex portion 1121, the second outer disc surface 122 integrally protrudes outward to have a second convex portion 1221 welded and fixed to the first inner disc surface 112 of the first disc body 11. There are 8 second convex portions 1221, and the 8 second convex portions 1221 are surrounded by the outer side of the recess 123. A second convex portion 1221 and a first convex portion 1121 are fixedly connected by welding to weld the first disc body 11 and the second disc body 12 into a brake disc 1. Not only is the structure simple, easy to process, and easy to install, but the multiple second convex portions 1221 and the multiple first convex portions 1121 form multiple air ducts for heat dissipation, further improving the heat dissipation effect.

[0025] like Figure 2 , Figure 4 As shown, each second protrusion 1221, a first protrusion 1121, a first inner disc surface 112, and a second outer disc surface 122 enclose a closed chamber 13, and the closed chamber 13 is filled with metal 4, and the metal 4 is tin alloy, zinc alloy, or sodium metal, etc., and the metal 4 with different melting points can be selected according to the material of the brake disc 1. When the vehicle brakes frequently or for a long time, the brake disc 1 heats up rapidly due to the large amount of heat generated by friction. When the temperature of the brake disc 1 rises to the melting point of the metal 4, the metal 4 begins to melt, thereby absorbing heat, improving the heat dissipation effect, and reducing the heating speed of the brake disc 1. When the braking ends, the brake disc 1 gradually cools down, and the metal 4 solidifies and releases the collected heat.

[0026] like Figure 1 , Figure 2 As shown, the first convex portion 1121 extends along the circumferential direction of the brake disc 1, the second convex portion 1221 extends along the radial direction of the brake disc 1, and the distance between two adjacent second convex portions 1221 gradually increases toward the outer peripheral wall of the second disc body 12 so that the air duct gradually increases toward the outer peripheral wall of the brake disc 1, further improving the heat dissipation effect. Specifically, one of every two adjacent second convex portions 1221 is inclined relative to the other, and the inclination directions and inclination angles of the plurality of second convex portions 1221 are the same, so that uniform heat dissipation of the brake disc 1 is achieved.

[0027] like Figure 1 , Figure 2As shown, specifically, the first protrusion 1121 extends along the circumference of the brake disc 1 to form a first connecting rib, and each second protrusion 1221 includes a plurality of second connecting ribs 1222 formed by protruding outward from the second outer disc surface 122, and the plurality of first connecting ribs and the plurality of second connecting ribs 1222 are arc-shaped and distributed in a ring array with the axis of the brake disc 1 as the center. In the present embodiment, each second protrusion 1221 is surrounded by three second connecting ribs 1222, and the plurality of second connecting ribs 1222 surround an accommodating cavity 1223, and the accommodating cavity 1223 has an opening 1224, and the opening 1224 cooperates with the first connecting rib to close it, and the accommodating cavity 1223 and the first inner disc surface 112 and the second outer disc surface 122 constitute the closed chamber 13. To facilitate processing and installation, more specifically, the second connecting rib 1222 extends along the radial direction of the brake disc 1 and toward the outer peripheral wall of the second disc body 12, and there is a distance between the second connecting rib 1222 and the outer peripheral wall of the second disc body 12 to prevent it from interfering with other components, and the opening 1224 is located at one end of the accommodating cavity 1223 away from the outer peripheral wall of the second disc body 12.

[0028] The brake disc structure of the utility model is formed by protruding a plurality of first protrusions on the first inner disc surface, and protruding a plurality of second protrusions on the second outer disc surface, a second protrusion is fixedly connected to a first protrusion, and the two and the first inner disc surface and the second outer disc surface form a closed chamber, and the closed chamber is filled with metal. When the vehicle brakes frequently or for a long time, the brake disc heats up rapidly due to the large amount of heat generated by friction. When the temperature of the brake disc rises to the melting point of the metal, the metal begins to melt, thereby absorbing heat, improving the heat dissipation effect, and reducing the heating speed of the brake disc. When the braking ends, the brake disc gradually cools down, the metal solidifies and releases the collected heat. The brake disc structure of the utility model is simple, has good heat dissipation effect, is easy to process and is easy to install.

[0029] The embodiment of the utility model further provides a vehicle axle (not shown), comprising a brake (not shown), wherein the brake comprises the brake disc structure described in any of the above embodiments.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Brake disc structure, characterized in that: A brake disc is provided, wherein the brake disc comprises a first disc body and a second disc body; The first disc body comprises a first outer disc surface and a first inner disc surface located inside the first outer disc surface, the first inner disc surface is provided with a plurality of first convex portions extending inwardly, and the plurality of first convex portions are distributed along the circumference of the brake disc; The second disk body is located on the inner side of the first disk body and has a second inner disk surface and a second outer disk surface located on the outer side of the second inner disk surface. The second outer disk surface protrudes outward corresponding to each of the first protrusions and has a second protrusion fixedly connected to the first disk body. The second protrusion is fixedly connected to the first protrusion and the two, the first inner disk surface and the second outer disk surface form a closed chamber, and the closed chamber is filled with metal.

2. The brake disc structure according to claim 1, characterized in that: The first protrusion extends along the circumferential direction of the brake disc, the second protrusion extends along the radial direction of the brake disc, and the distance between two adjacent second protrusions gradually increases toward the outer peripheral wall of the second disc body.

3. The brake disc structure according to claim 2, characterized in that: One of every two adjacent second protrusions is inclined relative to the other, and the plurality of second protrusions have the same inclination direction and the same inclination angle.

4. The brake disc structure according to claim 1, characterized in that: The first protrusion extends along the circumference of the brake disc to form a first connecting rib, and each of the second protrusions includes a plurality of second connecting ribs extending outward from the second outer disc surface. The plurality of second connecting ribs surround an accommodating cavity, and the accommodating cavity has an opening, which cooperates with the first connecting rib to be closed. The accommodating cavity, the first inner disc surface, and the second outer disc surface constitute the closed chamber.

5. The brake disc structure according to claim 4, characterized in that: The second connecting rib extends along the radial direction of the brake disc and toward the outer peripheral wall of the second disc body, and there is a distance between the second connecting rib and the outer peripheral wall of the second disc body. The opening is located at an end of the accommodating cavity away from the outer peripheral wall of the second disc body.

6. The brake disc structure according to claim 4, characterized in that: The plurality of first connecting ribs and the plurality of second connecting ribs are arc-shaped and distributed in a ring array with the axis of the brake disc as the center, and the metal is tin alloy, zinc alloy or sodium metal.

7. The brake disc structure according to claim 1, characterized in that: The first disc body is provided with a center hole passing through it along the axial direction of the brake disc, the multiple first protrusions surround the outer side of the center hole and are close to the center hole relative to the outer peripheral wall of the first disc body, the second disc body is concavely formed inwardly from the second outer disc surface to form a recessed portion, the recessed portion corresponds to the center hole and is provided with a through hole passing through it along the axial direction of the brake disc, the through hole corresponds to the center hole, and the multiple second protrusions surround the outer side of the recessed portion.

8. The brake disc structure according to claim 7, characterized in that: The plurality of first protrusions are evenly distributed along the circumference of the brake disc and are welded and fixed to the plurality of second protrusions and the first inner disc surface. The recess is provided with a plurality of bolt holes penetrating therethrough along the axial direction of the brake disc, and the plurality of bolt holes surround the outer side of the through hole.

9. A vehicle axle, characterized in that: A brake is provided, wherein the brake comprises a brake disc structure according to any one of claims 1 to 8.

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