Motor train unit foundation brake device suitable for high and cold environment

Abstract

A motor train unit foundation brake device suitable for a high and cold environment comprises a clamp forceps unit, a brake disc and a brake lining and is characterized in that double-side gaps between the brake disc and the brake lining are increased to be 3-6mm, gaps among friction particles in the brake lining are not smaller than 6mm, the friction particles on the brake lining are oval, the directions of gaps among the friction particles are arc-shaped, and an anti-freezing coating is sprayed on the surfaces of the clamp forceps unit and a brake cylinder. The motor train unit foundation brake device ensures that grinding materials produced in the braking process in extreme weather or hard particles from the outside can be smoothly discharged, the production origin of metal inserts is eliminated, and a phenomenon that the brake disc and the brake lining are possibly engaged unfirm. In addition, the shortcoming of unsmooth discharging impurity of an original brake disc is overcome, the discharging of the grinding materials produced in the braking process or the hard particles from the outside is facilitated, the production origin of metal inserts is further eliminated, an abnormal abrasion phenomenon of the brake disc is effectively decreased, the maintenance working amount and the maintenance cost are reduced, and the vehicle utilization rate is improved. The anti-freezing varnish is spayed on the surfaces of the clamp forceps unit and the brake cylinder, and snow and ice are prevented from being accumulated.

Description

technical field [0001] The invention relates to a basic braking device for rail vehicles, in particular to a basic braking device for avoiding abnormal wear of brake discs for high-speed EMUs in alpine environment. Background technique [0002] When the high-speed EMU is operating in ice and snowy weather, the extremely low ambient temperature and the ice and snow rolled up by the EMU's high-speed operation cause serious ice and snow accumulation on the basic braking device, especially the ice and snow accumulation on the brake pads, which causes the brake pads and brake discs to accumulate. The actual gap becomes smaller, resulting in the phenomenon of brake pad virtual holding; at the same time, the friction particles on the brake pad are regular hexagons and the gap is small, so the metal grinding objects and hard particles from the outside generated during the braking process cannot be discharged in time, forming metal inlaid particles. The nuclei may directly participat...

AI Technical Summary

Problems solved by technology

[0010] To sum up, the problem of abnormal wear of brake discs caused by icing and snow accumulation in the basic braking devices of EMUs is a worldwide problem, which is mainly dealt with by external measures such as snow removal, ice melting and snow removal equipment, or speed limitation (including outage) In ice and snow weather, these solutions require a lot of manpower, material resources, and financial resources, increasing the maintenance workload and operating costs

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