Brake pad for high-speed train

Abstract

The invention discloses a brake pad for a high-speed train. The brake pad comprises a brake pad steel backing and a friction block; the friction block comprises a friction block steel backing, a pressing blank and a reinforcing pin; a blind hole is formed in the pressing blank; a through hole communicated with the blind hole is formed in the friction block steel backing; the two ends of the reinforcing pin are fixedly clamped in the blind hole and the through hole respectively, the pressing blank is fixedly connected with the friction block steel backing, the brake pad steel backing is fixedlyconnected with the friction block steel backing, the mechanical bonding strength of the friction block steel backing and the pressing blank is enhanced through the reinforcing pin, and the shear resistance and the impact resistance of the bonding surface between the pressing blank and the friction block steel backing are enhanced. The brake pad can be used to solve the problem that in the prior art, the shear resistance and the impact resistance of the bonding surface between the pressed blank and the friction block steel backing are weak due to the fact that pores are inevitably formed in the bonding surface between the pressing blank and the friction block steel backing.

Description

technical field [0001] The invention relates to the field of brake devices, in particular to a brake pad for high-speed trains. Background technique [0002] As the high-speed railway network becomes more and more criss-crossed, the safety of high-speed trains is getting more and more attention. When the train is running from high speed to safe braking and stopping, the braking system needs to generate braking torque to achieve braking. The friction block directly contacts the wheel, and the kinetic energy is converted into heat energy through friction and dissipated into the air. Therefore, the performance requirements of the friction block are very high. [0003] In the prior art, the friction block is formed by pressurized sintering of the friction block compact and the friction block steel back, and the friction block compact and the friction block steel back have structures corresponding to each other. [0004] For example, the invention patent of Chinese Patent Publi...

AI Technical Summary

Problems solved by technology

[0007] Since the powder metallurgy friction material contains non-metallic components such as graphite and silicon dioxide, which are not wetted with the metal, pores inevitably appear on the bonding surface between the compact and the steel back of the friction block during the sintering process. As a result, the shear resistance and impact resistance of the bonding surface are weak, and the friction material layer of the friction block falls off and falls off, which poses a safety risk

[0008] Aiming at the problem that pores inevitably appear on the bonding surface between the green compact and the steel back of the friction block in the prior art, resulting in weak shear resistance and impact resistance of the bonding surface between the green compact and the steel back of the friction block, it has not yet been proposed effective solution

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