Disc brake pad for urban rail train

Abstract

The invention discloses a disc brake pad for an urban rail train. The disc brake pad comprises a steel backing (1) and a plurality of friction particles (2), wherein the steel backing (1) is formed bycasting a butterfly-shaped symmetrical structure; a plurality of grooves (11) are distributed in one side of a friction surface of the steel backing (1), rivet grooves (12) are formed in the positions, corresponding to the grooves (11), of one side of a non-friction surface at the other side of the steel backing, and the number of the grooves (11) is gradually increased from inside to outside along the radial direction of the steel backing (1); one friction particle (2) is arranged in each groove (11); and the distance between the edges of the adjacent friction particles (2) is 2-5 mm. Due toelastic riveting of the friction particles and the steel backing, damage to the steel backing can be reduced to the minimum in the using process, and repeated utilization of the steel backing of thedisc brake pad for the urban rail train is facilitated.

Description

technical field [0001] The invention belongs to the technical field of mechanical structures, in particular to the technical field of disc brakes, in particular to a disc brake pad for urban rail trains. Background technique [0002] With the development of my country's economy, the growth rate of the urbanization process has increased significantly, and the pressure and demand for public transportation in the city have also increased significantly due to the growth of the urban population. At present, urban rail transit mainly includes subways, light rails, monorails, and trams. Among them, the subway has the largest transportation volume, but its cost is also high, and it is suitable for large and super-large cities; the transportation volume of the light rail is moderate, and the construction cost and The maintenance cost is also relatively low, which is suitable for medium-sized cities; the tram has the smallest traffic volume and the lowest construction cost, and is sui...

AI Technical Summary

Problems solved by technology

At present, the synthetic brake pad friction material used in urban rail trains is a polymer composite material, which is easy to decompose at high temperature, and the operating temperature generally does not exceed 350°C. The heat capacity is low, and the thermal conductivity is poor. Smoke, eccentric wear and abnormal wear of the brake disc often occur during use. In addition, the rail transit industry has higher and higher requirements for environmental protection. The polymer materials used in synthetic materials are easy to decompose, produce pungent odors, cause pollution to the environment and affect the passenger experience

Therefore, it is more and more difficult for synthetic brake pads to meet the requirements of use

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