An elastically adjustable brake pad for a train

Abstract

The invention belongs to the technical field of trains and relates to an elastic adjustment type brake pad used for a train. The elastic adjustment type brake pad used for the train comprises a brake pad framework provided with a fourth through hole, a brake block assembly and a spiral compression spring; the brake block assembly comprises a brake block, a rivet, a butterfly-shaped spring and a rivet sleeve; the brake block comprises a friction block and a fixed piece steel backing which are fixedly installed together; the rivet penetrates out of the brake block and then is sequentially sleeved with the butterfly-shaped spring and the rivet sleeve; the fourth through hole is a step counter bore; the rivet sleeve in the brake block assembly is arranged in the fourth through hole in a penetrating manner to stretch out; the spiral compression spring is arranged on the outer side of the rivet sleeve in a sleeving manner; a clamping groove connected with an elastic check ring in a clamped manner is formed in the outer side of one end of the rivet sleeve; one end of the spiral compression spring abuts against and is attached to the step where a secondary counter bore is located; the other end of the spiral compression spring abuts against and is attached to the lower end face of the elastic check ring; and a plurality of rotation stopping pins are arranged between the fixed piece steel backing and the brake pad framework. The elastic adjustment type brake pad used for the train has the beneficial effects that the braking gap is automatically adjusted, the friction area is guaranteed all the time, the braking efficiency is improved, the service life is prolonged, and the machining cost is low.

Description

technical field [0001] The invention relates to the technical field of trains, in particular to an elastically adjustable brake pad for trains. Background technique [0002] In the prior art, the friction braking structure of the train converts kinetic energy into heat energy through friction and dissipates it into the air. Disc brake systems are currently used in trains with higher speeds per hour. Disc brakes are further divided into disc brakes and disc brakes. Disc brakes use the outside of the wheel as a brake disc directly, and disc brakes install the brake disc on the axle. Both of the above two disc brake structures use brake pads distributed on both sides of the brake disc. When the train is running, the brake disc is integrated with the wheel disc or axle disc of the vehicle. With the high-speed rotation of the wheel shaft, the brake pads are relatively static. When the train needs to brake, the hydraulic cylinder transmits the pressure to the brake pads, thereby...

AI Technical Summary

Problems solved by technology

The disadvantage is that the steel back of the friction block and the adjuster of the spherical arc structure need to be cast, which increases the cost of external processing, and is not convenient for sintering of friction materials

[0005] There is a document that provides a brake pad for trains, although the brake pad skeleton and the brake block are also movably connected, and the brake pad can adjust the surface of the friction material of the friction block and the brake disc by using a disc spring. The contact area of ​​the surface improves the braking efficiency, but its defect is that the machining accuracy of the parts is high; although the surface contact area of ​​each friction block and the brake disc can be adjusted separately, after a period of use, different brake blocks The friction area between them becomes different, and even if they are adjusted separately, the friction area of ​​all the brake pads cannot be guaranteed to be consistent or coordinated, which shortens the service life of the entire brake pad and affects the braking efficiency

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