Composite carbon-ceramic brake disc of heavy-load vehicle

Abstract

The utility model discloses a composite carbon-ceramic brake disc for a heavy-load vehicle, which belongs to the field of truck brake discs and is characterized in that the diameter of the inner wall of an inner disc body is larger than that of the inner wall of an outer disc body, so that a water injection channel structure is arranged between an installation body and the inner wall of the inner disc body; when the brake pad needs to be cooled by spraying water, the spraying head can spray water at the water injection channel, and then the water can be thrown out from the inside to the outside under the influence of centrifugal force along with rotation of the brake disc. And meanwhile, high-temperature water vapor generated when water makes contact with the two adjacent connecting bodies and the surrounding areas of the two adjacent connecting bodies is conveniently and rapidly discharged outwards, the staying time of the high-temperature water vapor in a cavity between the two adjacent connecting bodies is shortened, the heat dissipation efficiency is improved, the cracking risk of the outer disc body and the inner disc body is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of truck brake discs, and more specifically to a composite carbon-ceramic brake disc for a heavy-duty truck. Background Art

[0002] The brake disc is simply a round disc that rotates when the car is moving. The brake caliper clamps the brake disc to generate braking force. When you step on the brake, it clamps the brake disc to slow down or stop the car. Although most heavy-duty trucks are equipped with drum brakes for braking, a small number of heavy-duty trucks are equipped with disc brakes for braking. Therefore, in order to improve the braking performance of the disc brakes on heavy-duty trucks, manufacturers have developed composite carbon ceramic brake discs.

[0003] The existing composite carbon-ceramic brake disc has the same inner wall diameter as the outer disc body and the inner disc body, and is directly fixedly connected to the outer disc body and the inner disc body. As a result, when the brake disc needs to be cooled by water, cold water can only be sprayed from the outside of the disc body to the inside, so that water is easily gathered inside the cavity between two adjacent connectors. Although it can achieve a good cooling effect, a large amount of high-temperature hot steam will be instantly generated when water contacts the inside of the cavity between the connectors during the cooling process. It is not convenient to discharge it quickly, which increases the risk of cracking of the disc body. Therefore, we propose a heavy-duty vehicle composite carbon-ceramic brake disc to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a composite carbon-ceramic brake disc for heavy-duty vehicles. It has a water injection channel structure between the mounting body and the inner wall of the inner disc body by setting the inner disc body wall diameter to be larger than the outer disc body wall diameter. When the brake pad needs to be sprayed with water for cooling, the spray head can spray water at the water injection channel. Then, as the brake disc rotates, the water can be thrown out from the inside to the outside under the influence of centrifugal force. This facilitates drainage and also facilitates the rapid discharge of high-temperature water vapor generated when water contacts two adjacent connectors and their surrounding areas, thereby reducing the residence time of high-temperature water vapor in the cavity between the two adjacent connectors, improving heat dissipation efficiency, reducing the risk of cracking of the outer disc body and the inner disc body, and increasing service life.

[0006] 2. Technical solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] A composite carbon-ceramic brake disc for a heavy-duty vehicle comprises an outer disc body, an inner disc body and a mounting body, wherein the outer disc body and the inner disc body have the same outer wall diameter, and the inner disc body has a larger inner wall diameter than the outer disc body, and the outer disc body and the inner disc body are fixedly connected via a plurality of connectors, and the mounting body comprises a barrel portion and an edge portion, the outer edge of the barrel portion end portion is fixedly connected to the outer disc body inner wall and a plurality of connector ends, and a water injection channel is provided between the outer wall of the barrel portion and the inner disc body inner wall, and a plurality of heat dissipation holes are provided on the outer disc body and the inner disc body between two adjacent connectors, and a plurality of bolt holes are equidistantly provided inside the edge portion.

[0009] Furthermore, a plurality of the connecting bodies are all in an arc-shaped structure, and a plurality of the connecting bodies are all provided with a concave guide groove on one side.

[0010] Furthermore, the outer disc body, the inner disc body, the mounting body and the plurality of connecting bodies are a circular structure formed by integral casting, and the outer surfaces of the outer disc body and the inner disc body are smooth and free of burrs.

[0011] Furthermore, the thicknesses of the outer disk, the inner disk and the mounting body are all equal, and the distance between the outer disk and the inner disk is greater than the thickness of the outer disk.

[0012] Furthermore, the cross section of the barrel portion is a double-arc structure.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) In this solution, by setting the inner wall diameter of the inner disk body to be larger than the inner wall diameter of the outer disk body, a water injection channel structure is provided between the mounting body and the inner disk body wall, so that when the brake pad needs to be sprayed with water for cooling, the spray head can spray water at the water injection channel, and then as the brake disk rotates, the water can be thrown out from the inside to the outside under the influence of centrifugal force, which is convenient for drainage and also convenient for quickly discharging the high-temperature water vapor generated when the water contacts the two adjacent connectors and the surrounding areas, thereby reducing the residence time of the high-temperature water vapor in the cavity between the two adjacent connectors, improving the heat dissipation efficiency, reducing the risk of cracking of the outer disk body and the inner disk body, and increasing the service life;

[0016] (2) In this solution, the concave guide groove opened on the connector can not only guide the direction of water, but also increase the contact area between water and the connector, which is beneficial to the rapid heat dissipation of the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0020] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0021] Description of the numbers in the figure:

[0022] 1. Outer disk; 2. Inner disk; 3. Mounting body; 301. Cylinder body; 302. Edge; 4. Connecting body; 5. Water injection channel; 6. Heat dissipation hole; 7. Inner concave guide groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention specification; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention are within the scope of protection of the present invention.

[0024] Embodiment 1:

[0025] See also Figure 1-Figure 4 A composite carbon ceramic brake disc for a heavy-duty vehicle comprises an outer disc body 1, an inner disc body 2 and a mounting body 3. The outer wall diameters of the outer disc body 1 and the inner disc body 2 are the same, and the inner wall diameter of the inner disc body 2 is larger than the inner wall diameter of the outer disc body 1. The outer disc body 1 and the inner disc body 2 are fixedly connected by a plurality of connectors 4. The mounting body 3 comprises a cylinder portion 301 and an edge portion 302. The outer edge of the end of the cylinder portion 301 is fixedly connected to the inner wall of the outer disc body 1 and the ends of the plurality of connectors 4. A water injection channel 5 is provided between the outer wall of the cylinder portion 301 and the inner wall of the inner disc body 2. A plurality of heat dissipation holes 6 are provided on the outer disc body 1 and the inner disc body 2 between two adjacent connectors 4. A plurality of bolt holes are equidistantly provided inside the edge portion 302. The plurality of connectors 4 are all in an arc-shaped structure, and a concave guide groove 7 is provided on one side of the plurality of connectors 4.

[0026] The working principle of this heavy-duty vehicle composite carbon ceramic brake disc is:

[0027] First, the brake disc is installed through the edge portion 302 of the mounting body 3, and the corresponding brake pad and its driving mechanism are installed. When the brake disc is at high temperature, the spray water nozzle on the truck can directly spray water at the water injection channel 5, and then the water enters the cavity between the two adjacent connectors 4 from the water injection channel 5, and contacts with the outer disc body 1, the inner disc body 2 and the area between the two adjacent connectors 4 to cool down. Then, as the brake disc rotates, the water is thrown outward under the influence of centrifugal force. At the same time, the high-temperature water vapor generated in the contact area with the water can also be discharged outward at the same time, thereby improving the heat dissipation effect. The concave guide groove 7 opened on the connector 4 can not only guide the direction of the water, but also increase the contact area between the water and the connector 4, which is beneficial to the rapid heat dissipation of the connector 4.

[0028] Embodiment 2:

[0029] In view of the above embodiment 1, for further description, refer to Figure 1 and Figure 2 The outer disk body 1, the inner disk body 2, the mounting body 3 and several connecting bodies 4 are an integrally cast circular structure, and the outer surfaces of the outer disk body 1 and the inner disk body 2 are smooth and free of burrs. The thickness of the outer disk body 1, the inner disk body 2 and the mounting body 3 are equal. The distance between the outer disk body 1 and the inner disk body 2 is greater than the thickness of the outer disk body 1, and the cross-section of the cylinder part 301 is a double arc structure.

[0030] The outer disc body 1, the inner disc body 2, the mounting body 3 and the plurality of connecting bodies 4 are integrally cast into a circular structure, so that the brake disc has better integrity and better structural strength.

[0031] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A composite carbon ceramic brake disc for a heavy-duty vehicle, comprising an outer disc body (1), an inner disc body (2) and a mounting body (3), characterized in that: The outer wall diameters of the outer disk body (1) and the inner disk body (2) are the same, and the inner wall diameter of the inner disk body (2) is larger than the inner wall diameter of the outer disk body (1). The outer disk body (1) and the inner disk body (2) are fixedly connected via a plurality of connectors (4). The mounting body (3) comprises a barrel portion (301) and an edge portion (302). The outer edge of the barrel portion (301) is fixedly connected to the inner wall of the outer disk body (1) and the ends of a plurality of connectors (4). A water injection channel (5) is provided between the outer wall of the barrel portion (301) and the inner wall of the inner disk body (2). A plurality of heat dissipation holes (6) are provided on the outer disk body (1) and the inner disk body (2) between two adjacent connectors (4), and a plurality of bolt holes are provided at equal intervals inside the edge portion (302).

2. A heavy-duty vehicle composite carbon-ceramic brake disc according to claim 1, characterized in that: A plurality of the connecting bodies (4) are all in an arc-shaped structure, and a plurality of the connecting bodies (4) are all provided with an inner concave guide groove (7) on one side.

3. The heavy-duty vehicle composite carbon-ceramic brake disc according to claim 1, characterized in that: The outer disc body (1), the inner disc body (2), the mounting body (3) and the plurality of connecting bodies (4) are integrally cast circular structures, and the outer surfaces of the outer disc body (1) and the inner disc body (2) are smooth and free of burrs.

4. The heavy-duty vehicle composite carbon-ceramic brake disc according to claim 1, characterized in that: The outer disk body (1), the inner disk body (2) and the mounting body (3) are all of equal thickness, and the distance between the outer disk body (1) and the inner disk body (2) is greater than the thickness of the outer disk body (1).

5. The heavy-duty vehicle composite carbon-ceramic brake disc according to claim 1, characterized in that: The cross section of the barrel portion (301) is a double-arc structure.

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