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Powder metallurgy iron-based high-speed brake pad

A powder metallurgy, iron-based technology, applied in the field of powder metallurgy iron-based high-speed brake pads, can solve the problems of increasing brake disc and brake block wear, high temperature, reducing powder metallurgy friction area, etc., to improve service performance and service life , smooth and effective braking, and the effect of improving braking efficiency

Inactive Publication Date: 2008-04-16
贵州新安航空机械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of brake block will greatly reduce the powder metallurgy friction area due to the limitation of the shape and area of ​​the tile back, resulting in higher kinetic energy absorbed by the powder metallurgy brake block per unit area than the overall grooved type under the same speed and braking pressure, which will cause brake disc The temperature of the friction surface of the brake pad and the high-speed brake pad is too high, which increases the wear of the brake disc and brake pad, reduces the thermal stability of the brake material, and reduces the service life of the brake disc and high-speed brake pad

Method used

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  • Powder metallurgy iron-based high-speed brake pad
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  • Powder metallurgy iron-based high-speed brake pad

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Embodiment Construction

[0021] The present invention is mainly composed of a tile back 1, a dovetail block 2, a friction block 3, a hemming vessel 4 and a rivet seat 5 connected. The tile back 1 has a number of T-shaped through holes, a number of closed holes and welding holes; the friction block 3 is made of powder metallurgy materials such as iron powder and copper powder mixed evenly in proportion, cold pressed, and then pressure sintered and embedded in the edge Inside the vessel 4; the bottom of the hemming vessel 4 has several through holes and several outward bosses 7, and the hemming vessel 4 is connected to one side of the tile back 1 through the rivet seat 5, rivets 6 and bosses 7; the dovetail The block is convex in the middle, the two ends are gradually bent and concave, and the end is bent and convex again. There are 6 through holes in the concave part, and the dovetail block 2 is connected through the through holes and the welding holes on the tile back 1. Welded on the other side of ti...

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Abstract

The invention relates to a powder metallurgy iron-base high-speed brake lining, composed of a brake shoe back (1), a dovetail block (2), a friction block (3) and a serging vessel (4) linked with a rivet (6) through a rivet seat (5), wherein, the friction block (3) adopts a vessel serging structure and powder metallurgy iron-base friction materials and is formed by chill pressing and compression sintering. The invention is characterized by reliable structure, stable drag friction performance, low surface temperature rise, small relative dispersion and good wearing resistance, etc., and is suited to starting or towing a car on a railway with speed at or below 300km / h.

Description

technical field [0001] The invention relates to a braking device for railway vehicles, in particular to a powder metallurgy iron-based high-speed brake pad. Background technique [0002] The high-speed brake pad is a supporting product of the high-speed train braking system. During the braking process of the train, it rubs against the brake disc on the wheel shaft to absorb kinetic energy and consume its own mass to produce a braking effect. It is a high-speed train bogie or braking device. The main structural force-bearing parts. Iron-based, copper-based, aluminum-based powder metallurgy high-speed brake pads can be used according to needs. The friction part of powder metallurgy high-speed brake pads can be divided into integral slotted powder metallurgy brake blocks (without wrapping vessels on the side of the brake block) and by Small polygonal or cylindrical powder metallurgy brake columns (with edged vessels on the side of the brake block) are arranged and combined. ...

Claims

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Application Information

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IPC IPC(8): F16D69/00F16D69/02
Inventor 徐瑛黄树华冯友琴席泽荣
Owner 贵州新安航空机械有限责任公司
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