Explosion-proof composite soft brake shoe

Abstract

The invention relates to an explosion-proof composite soft brake shoe. The explosion-proof composite soft brake shoe is characterized in that the shoe is made of soft materials without asbestos, phenolic resin and metal power in whole, and made of the following raw materials in percentage by weight: 20 percent of rubber, 12 percent of graphite, 13 percent of carbon black, 10 percent of argil, 5 percent of a dm accelerant, 5 percent of paraffin, 3 percent of sulphur powder, 7 percent of magnesium oxide, 5 percent of zinc oxide, 10 percent of coumarone, and 10 percent of rubber powder; the raw materials are poured into a stirrer to be uniformly stirred and to be prepared into mixture; the mixture is subjected to hot press molding through a die, with the hot press temperature being 180 to 200 DEG C and the time being 20 to 25 minutes; then mold stripping is performed, so that the shoe is formed; the shoe comprises three types applied to trains, motor vehicles under coal mines and tramcars. The shoe is good in wear-resisting property, nontoxic and pollution-free, greatly improves the safety, comfort and wear-resisting property of the vehicles, and can greatly prolong the service life of the vehicles.

Description

technical field [0001] The invention belongs to an accessory applicable to trains, mine vehicles, electric locomotives and trams, and particularly relates to an explosion-proof composite soft brake shoe. Background technique [0002] At present, the first generation of brake shoes used in domestic trains, mining vehicles, electric locomotives and trams uses cast iron brake shoes, which will cause serious damage to the vehicles, and sparks will occur at the same time, and wheel locking will occur in winter. The second-generation product is made of phenolic resin as a binder and asbestos, iron red, hard acid, metal powder, and barium carbonate as raw materials. Since phenolic resin and asbestos are harmful substances that can cause cancer, the products produced Brake shoe products are very harmful to the human body. Asbestos and phenolic resin have been recognized as carcinogens. Asbestos dust not only causes serious pollution to the environment, but also has great harm to hum...

AI Technical Summary

Problems solved by technology

[0002] At present, the first generation of brake shoes used for trains, mining vehicles, electric locomotives and trams in China in the existing technology uses cast iron brake shoes, which will seriously damage the vehicles, and at the same time sparks will occur, and wheel locking will occur in winter.

The second-generation product is made of phenolic resin as a binder and asbestos, iron red, hard acid, metal powder, and barium carbonate as raw materials. Since phenolic resin and asbestos are harmful substances that can cause cancer, the products produced Brake shoe products are very harmful to the human body. Asbestos and phenolic resin have been recognized as carcinogens. Asbestos dust not only causes serious pollution to the environment, but also has great harm to human health. In terms of performance, there are also phenomena such as high hardness, easy expansion, and easy decline.

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