Friction-resistant brake pads for high-speed trains

Abstract

The invention discloses a wear-resisting brake pad of a high-speed train, and belongs to the field of train wear-resisting brake pad devices. The wear-resisting brake pad comprises a substrate lubricating heat conductor and multiple wear-resisting body crystal block array layers distributed in the substrate lubricating heat conductor. The multiple wear-resisting crystal block array layers are stacked according to the interval value H, and each wear-resisting crystal block array layer is formed by multiple oval grinding balls according to a square array with the side length L. The oval grindingballs are made from ferrimanganic alloy, and a rectangular prism workblank of the substrate lubricating heat conductor is made from copper-tin alloy. According to the material composition of the ovalgrinding balls and the rectangular prism workblank of the substrate lubricating heat conductor, the vibration absorption, fast heat energy conversion and conduction, resonance elimination and overallstructural strength improving characteristics of the wear-resisting brake pad can be exerted furthest according to the substrate lubricating heat conductor and the relative position relation of the multiple wear-resisting body crystal block array layers distributed in the substrate lubricating heat conductor.

Description

technical field [0001] The invention belongs to the field of wear-resistant brake pads for trains, and in particular relates to a friction-resistant brake pad for high-speed trains. Background technique [0002] During the braking process of a high-speed train, the kinetic energy of high-speed operation will be converted into a large amount of frictional heat between the wheel disc and the brake pads, resulting in high temperature of the brake pads, and insufficient structural strength or heat dissipation efficiency of the brake pads, which may cause It cracks or even fails, thereby affecting driving safety. [0003] Existing high-speed train brake pads are usually divided into three layers. The innermost copper base of the brake pad is used as a heat dissipation plate, and the outermost layer of the brake pad is a hard alloy wear-resistant layer with uniform density. The wear-resistant layers are connected by graphite layers with better thermal conductivity. [0004] Howe...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the three-layer structure of the existing high-speed train brake pads, the connection strength between the graphite layer in the middle layer and the wear-resistant layer of the outer layer is relatively weak, which is relatively easy to damage and affects the service life; and the wear-resistant layer itself The thermal conductivity rate is poor, and the frictional heat cannot be quickly transferred to the graphite layer and the technical problem of the copper base. The invention provides a friction-resistant brake pad for high-speed trains.

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