A brake valve device

Abstract

The invention discloses a novel brake valve device, which comprises an upper cavity valve body, a middle cavity valve body and a lower cavity valve body which are connected in sequence and can be detached from each other, and are fixed by a connecting seat. The first piston outer casing and the second piston The outer casings are all detachable, the inner wall length of the first piston outer casing and the second piston outer casing is less than the outer wall length, and a concave arc surface is formed at the lower end thereof and the spatial data are equal, the first section top of the second piston is provided with a A connecting rod that is articulated at the bottom of the piston. The invention is a detachable structural mode, which is convenient for installation, maintenance or repair. The valve body is installed firmly, the gas circulation is uniform, the pressure in the cavity is uniform, and the upper and lower brakes are synchronized evenly. Resistance, chaotic airflow, and uneven airflow, so that the braking process is light, soft, sensitive, sensitive, uniform and stable, and the upper and lower double-circuit brakes are synchronized and uniform. It has high practical value and is very suitable for large-scale promotion. use.

Description

technical field [0001] The invention relates to a brake valve device, in particular to a brake valve device, which belongs to the field of automobile brakes. Background technique [0002] The brake valve is the main control device in the vehicle braking system. It realizes sensitive follow-up control during the braking process and release process of the dual-circuit main braking system. The brake valve is mainly composed of the upper cavity piston, the lower cavity piston, Push rod, balance spring, return spring (upper and lower cavity), upper cavity valve, lower cavity valve, air inlet, air outlet, exhaust port, vent hole. When the driver steps on the pedal, the piston presses down the balance spring by stretching the pull rod, and the piston moves down. First, the exhaust valve is closed and the intake valve is opened. The air chamber pushes the diaphragm of the air chamber to rotate the brake cam to achieve wheel braking. [0003] In the existing brake valve, the upper ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a brake valve device, which solves the difficulty in repairing or maintaining the existing brake valve, and performs reverse pressure injection, expansion, guidance, and uniform output of the gas circulation. The air supply volume of the air storage valve and the lower air storage valve is not synchronized and inconsistent, which solves a series of problems in the braking process

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