Multi-way valve, pneumatic braking system and vehicle

Abstract

The invention discloses a multi-way valve, a pneumatic braking system and a vehicle. The pneumatic braking system comprises the multi-way valve, and the vehicle comprises the pneumatic braking system. The multi-way valve comprises a first input branch and at least two output branches communicated with the first input branch, at least one output branch is internally provided with a one-way valve so that fluid in the output branch can be stopped from reversely flowing. Therefore, the fluid in the output branch with the one-way valve can be prevented from reversely flowing, and fluid in a loop communicated with the output branch can be prevented from reversely flowing to the first input branch and other output branches. For instance, the pressure in the loop communicated with the output branch with the one-way valve can be prevented from dropping, and therefore traffic accidents caused by false operation of parking braking are prevented.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a multi-way valve, a pneumatic braking system and a vehicle. Background technique [0002] According to the control method, the braking system can be divided into hydraulic braking, electromagnetic braking and pneumatic braking. In addition, according to different braking methods, automobile braking can be divided into service braking, parking braking and auxiliary braking. Among them, parking brakes can be divided into central disc brakes and energy storage spring-type air-cut brakes. [0003] In vehicles using air pressure brakes, in addition to the air source required for the driving brake, parking brake and auxiliary brake, there are also high and low gears, clutch boosters, air horns, differential lock air pipes, etc. that need to be supplied from the air source ( such as a gas cartridge) for gas extraction. However, the number of air inlets on the air storage tank is...

AI Technical Summary

Problems solved by technology

[0005] Since the parking valve air supply port 24 communicates with the first auxiliary air port 25 and the second auxiliary air port 26, the auxiliary air path (for example, When air leaks, the gas in the parking chamber of the energy storage chamber flows to the leaking auxiliary gas passage through the gas supply port 24 of the parking valve, and the air pressure in the parking chamber of the energy storage chamber drops. In this way, the rear axle is braked incorrectly, which can easily lead to traffic accidents.

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