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CN-122014768-A - Carbon ceramic brake pair for heavy truck

CN122014768ACN 122014768 ACN122014768 ACN 122014768ACN-122014768-A

Abstract

The invention relates to the technical field of automobile parts, and discloses a carbon ceramic brake pair for heavy trucks, which comprises a brake disc and two groups of friction linings, wherein the brake disc is positioned between the two groups of friction linings, each group of friction linings comprises two friction plates, friction braking is carried out when the friction plates are in contact with the brake disc, the brake disc is carbon Tao Caizhi, and a heat dissipation part is arranged on the friction linings. According to the invention, through the matching of the carbon ceramic brake disc and the powder metallurgy friction plate and the combination of the staggered structure of the key grooves and the through holes and the heat dissipation channels, the high temperature resistance, the structural stability and the heat dissipation efficiency of the brake pair are obviously improved, the brake pair is suitable for severe working conditions such as heavy load, long downhill slope and the like, the weight of the brake is reduced, the friction area is increased, and the highest temperature of friction braking is reduced.

Inventors

  • ZHAO XIANG
  • Sun Boda
  • XIAO KAI
  • WANG CHAOPENG
  • ZHANG ZHIQI
  • ZHANG CHENGWEN
  • SONG XIAOQING

Assignees

  • 北摩高科正定摩擦材料有限公司

Dates

Publication Date
20260512
Application Date
20260409

Claims (10)

  1. 1. The utility model provides a heavy truck is with carbon pottery brake pair which characterized in that includes: A brake disc (3) and two groups of friction linings (1), wherein the brake disc (3) is positioned between the two groups of friction linings (1); each group of friction linings comprises two friction plates, and friction braking is carried out when the friction plates are in contact with the brake disc (3); The brake disc (3) is carbon Tao Caizhi, And the heat dissipation piece is arranged on the friction lining (1).
  2. 2. The carbon ceramic brake pair for the heavy truck according to claim 1 is characterized in that a baffle ring (2) and a connecting piece (5) are arranged on the brake disc (3) through a bolt sleeve (4).
  3. 3. The carbon ceramic brake pair for heavy truck according to claim 2, wherein a plurality of first through holes (11) and a plurality of key grooves (12) are formed in the inner side of the brake disc (3), and the plurality of first through holes (11) and the plurality of key grooves (12) are distributed in a staggered mode along the circumferential direction of the brake disc (3).
  4. 4. The carbon ceramic brake pair for heavy truck according to claim 3, wherein the connecting piece (5) is provided with a plurality of second through holes (13) and a plurality of external keys (14), the second through holes (13) and the external keys (14) are distributed in a staggered manner along the circumferential direction of the connecting piece (5), the first through holes (11) are in one-to-one correspondence with the second through holes (13), and the key grooves (12) are in one-to-one correspondence with the external keys (14).
  5. 5. The carbon ceramic brake pair for heavy truck according to claim 1, wherein the friction plate comprises a pressed compact (7) and a steel back (6), the pressed compact (7) is fixedly connected to the steel back (6), and a transition layer is arranged between the pressed compact (7) and the steel back (6).
  6. 6. The carbon ceramic brake pair for heavy truck according to claim 5, wherein the pressed compact (7) is pressed by powder metallurgy friction material and is pressed and sintered on the steel back (6).
  7. 7. The carbon ceramic brake pair for heavy truck according to claim 5, wherein the pressed compact (7) and the steel back (6) are of fan-shaped structures, and the side length of the pressed compact (7) is smaller than the side length of the steel back (6).
  8. 8. The carbon ceramic brake pair for heavy truck as defined in claim 5, wherein two convex keys (8) are arranged on the steel back (6).
  9. 9. The carbon ceramic brake pair for heavy truck according to claim 5, wherein the heat dissipation member comprises a heat dissipation channel (9) provided on the compact (7).
  10. 10. The carbon ceramic brake pair for heavy truck according to claim 3, wherein a plurality of third through holes (10) are formed in the baffle ring (2), and the third through holes (10) are in one-to-one correspondence with the first through holes (11).

Description

Carbon ceramic brake pair for heavy truck Technical Field The invention relates to the technical field of automobile parts, in particular to a carbon ceramic brake pair for a heavy truck. Background The carbon ceramic composite material is a brake material which is developed rapidly in recent years after powder metallurgy materials and carbon/carbon brake materials. The material is light in weight (the specific gravity is 2.0-2.4 g/cm 3, only about 30% of the cast steel brake disc material), high in high temperature resistance, high in wear resistance, high and stable in friction coefficient, insensitive to a humid environment, excellent in oxidation resistance and long in service life, and the carbon ceramic composite material has the advantages that the carbon ceramic composite material is widely used in the field of braking of an aircraft, so that the defects of the existing cast steel brake disc are perfectly overcome. It is anticipated that future carbon ceramic brake discs will gradually replace cast steel brake discs. The research shows that the powder metallurgy block and the carbon ceramic disc matching pair perform a scaled braking friction experiment, not only the whole friction factor is higher, but also the friction factor has small decline along with the speed and high friction stability, and the friction factor stability factor is 0.908 and is higher than 0.895 of the steel disc in the low-speed to high-speed initial speed range. Wear tests show that the highest wear rate of the brake block matched with the carbon ceramic disc is 0.147cm 3/MJ, and the wear rate of the brake block matched with the steel disc reaches 0.338cm 3/MJ, which is 2.3 times of that of the brake block matched with the carbon ceramic disc. When the friction surface of the brake block is observed and matched with the carbon ceramic disc, the surface is slightly damaged after high-speed braking, and a higher friction area is maintained, so that the friction factor attenuation is smaller. The existing automobile brake materials are mostly powder metallurgy brake pads, the braking principle is that kinetic energy in the running process of an automobile is absorbed through friction between powder metallurgy and a cast steel brake disc, and therefore the automobile is decelerated, and the carbon ceramic brake materials have high strength, low density, high heat resistance and other physical properties. The prior carbon ceramic material brake disc fixing structure is characterized in that the carbon ceramic brake disc is directly fixed on an automobile brake device through a fastener. Therefore, there is a need for a carbon ceramic brake pair for heavy truck to solve the above problems. Disclosure of Invention The invention aims to provide a carbon ceramic brake pair for a heavy truck, which reduces the weight of a brake and the highest temperature of friction braking. The invention provides a carbon ceramic brake pair for a heavy truck, which comprises the following components: A brake disc and two sets of friction linings, the brake disc being located between the two sets of friction linings; each group of friction linings comprises two friction plates, and friction braking is carried out when the friction plates are in contact with the brake disc; the brake disc is a piece of carbon Tao Caizhi, And the heat dissipation piece is arranged on the friction lining. According to the carbon ceramic brake pair for the heavy truck, provided by the invention, the brake disc is provided with the baffle ring and the connecting piece through the bolt sleeve. According to the carbon ceramic brake pair for the heavy truck, provided by the invention, the inner side of the brake disc is provided with the plurality of first through holes and the plurality of key grooves, and the plurality of first through holes and the plurality of key grooves are distributed in a staggered manner along the circumferential direction of the brake disc. According to the carbon ceramic brake pair for the heavy truck, the connecting piece is provided with the plurality of second through holes and the plurality of external keys, the plurality of second through holes and the plurality of external keys are distributed in a staggered mode along the circumferential direction of the connecting piece, the plurality of first through holes are in one-to-one correspondence with the plurality of second through holes, and the plurality of key grooves are in one-to-one correspondence with the plurality of external keys. According to the carbon ceramic brake pair for the heavy truck, the friction plate comprises the pressed compact and the steel back, the pressed compact is fixedly connected to the steel back, and the transition layer is arranged between the pressed compact and the steel back. According to the carbon ceramic brake pair for the heavy truck, the pressed compact is formed by pressing a powder metallurgy friction material and is pressed and sintered on the steel b