Wagon brake system

Abstract

The invention relates to a wagon brake system, which comprises a brake control system and a base control system. The base control system comprises that each car axle is provided with at least one disc brake device; the disc brake device comprises a brake disc (11) rotating with the car axle, a lever system (12), a brake pad (13), and a unit brake cylinder (14); certain gap is formed between the brake pad and the brake disc; the lever system is acted on the brake pad; the brake control system comprises an antiskid unit (9) communicated with the unit brake cylinder; compressed air entering the unit brake cylinder through the antiskid unit is converted into an acting force and output by the unit brake cylinder, and is amplified to the brake pad through the lever system; a positive pressure acted on the brake disc is formed by the brake pad; when wheel set sliding is detected to generate by the antiskid unit, an access from the brake control system to the unit brake cylinder is closed; and an access from the unit brake cylinder to atmosphere is opened; therefore, a brake force is eased so as to lead the car axle to resume to normal speed reduction rapidly. The wagon brake system can be adopted to improve the brake power, and is suitable for improving the speed of a wagon.

Description

technical field [0001] The invention relates to the technical field of railway freight car braking, in particular to a railway freight car braking system. Background technique [0002] At present, the operating speed of railway freight cars in our country is not higher than 120km / h, otherwise it will exceed its specified braking distance. Today, with the continuous increase in the speed of railway passenger cars and the continuous development of EMUs (including high-speed EMUs), it is imperative to increase the speed of freight trains. [0003] The existing railway freight car braking system is mainly composed of a braking control system and a basic braking system. The brake control system includes brake control valves, various air cylinders, and some piping connecting them. Among them, the brake control valve includes the 120-type brake control valve and the pressure-reducing KZW series empty-heavy vehicle automatic adjustment valve which are widely used at present. The ...

AI Technical Summary

Problems solved by technology

[0008] 3) The basic braking system adopts an interrelated structure, which not only has low braking efficiency but also is inconvenient to increase the speed;

[0009] 4) There is no anti-skid device, which limits the improvement of braking force;

[0010] 5) The automatic adjustment valve for empty and heavy vehicles is in the form of a pressure limiting valve, which wastes pressure air;

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