Floatation type brake pad for high speed train

Abstract

The invention relates to a floatation type brake pad for a high speed train.. The floatation type brake pad is characterized by comprising a pad rear panel, a dovetail board, friction block bodies, an elastic supporting sheet and a round spring clip; the pad rear panel is in an arc half-sole structure; the elastic supporting sheet is provided with a spherical supporting surface and a center guide hole; the frication block is provided with a spherical supporting surface and a guide connection shaft with a clamping groove; the elastic supporting sheet, the round spring clip and the friction block bodies are in elastic floatation connection with the pad rear panel; the spherical supporting surface of the elastic supporting sheet and the spherical supporting surface at the root of a connection shaft of each friction block body are rotary, so that the balance of a braking force is realized; the three single-arc quadrilateral friction bodies in one group are mutually engaged and locked; and friction bodies of four cylindrical grinding column bodies are mutually engaged and locked in pairs. With the adoption of the floatation type brake pad provided by the invention, a maximum contact friction area can be obtained, so that a braking process is stable, and the functions of damping, vibration attenuation, noise reduction, heat radiation and the like can be achieved. The friction blocks are easy to replace; the operation cost is low; and the floatation type brake pad can be widely used for a braking system of the high speed train.

Description

technical field [0001] The invention relates to a disc brake device applied to high-speed trains, in particular to a floating brake pad for high-speed trains. Background technique [0002] With the increase of train running speed, in order to ensure the braking performance of the train, the bogie foundation brake device requires a disc brake device according to its structure and function. Based on the friction between the brake pad and the brake disc, the kinetic energy of the train is converted into heat energy, making The train brakes to a stop. [0003] For high-speed trains, due to the relatively large braking energy, the brake pads, the key components of the disc brake device during braking: not only the friction blocks of the brake pads are required to be wear-resistant, high-temperature resistant, and low-noise, but also the friction blocks are required There should be good heat conduction performance and load balance performance between the body and the parts it is ...

AI Technical Summary

Problems solved by technology

[0004] At present, in the disc brake system of high-speed trains, the existing brake pads are attached when braking. figure 1 , figure 2 As shown, since the friction block of the brake pad is connected with the steel back and the dovetail by riveting and welding, the friction block and the steel back can neither rotate nor float relative to each other, resulting in the uneven braking pressure of each friction block on the brake disc. The brake disc vibrates, the maximum effective friction area cannot be obtained, the thermal load is large during fatal braking, and the service life of the brake pads is reduced

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