A gas-electric dual-control auxiliary parking valve and commercial vehicle braking system

Abstract

The invention belongs to the technical field of parking brakes for commercial vehicles, and discloses a gas-electric dual-control auxiliary parking valve and a commercial vehicle braking system. Three-way valve and electronically controlled two-position three-way valve, the two-way one-way valve driving air inlet is connected with the driving foot valve control gas, the two-way one-way valve outlet is connected with the driving relay valve or air chamber, and the air control two-position The exhaust control port of the three-way valve is connected with the control gas of the manual parking valve of the vehicle; the control port of the electronically controlled two-position three-way valve is connected with the self-resetting switch for the vehicle to control auxiliary parking. The invention adopts air control and electric control to control parking, and realizes hierarchical parking functions; it does not need to change the original commercial vehicle braking system, which not only reduces the dependence on electricity, improves parking reliability, but also integrates mechanical braking and inflation The brakes are well integrated to improve the parking ability and parking stability of the vehicle.

Description

technical field [0001] The invention relates to the technical field of commercial vehicle parking brakes, in particular to a gas-electric dual-control auxiliary parking valve and a commercial vehicle braking system. Background technique [0002] In the commercial vehicle braking system in the prior art, the parking braking methods include mechanical braking and pneumatic braking. The parking capacity requirements are even higher, especially when loading and unloading cargo may involve temporary parking. For the braking system of pure mechanical braking, due to the limitation of the capacity of the spring cylinder, the parking braking capacity is insufficient when the slope is large or the load is heavy, and parking cannot be realized. As for the technical solution of using the parking solenoid valve to assist mechanical braking to achieve the parking effect of the vehicle, since the solenoid valve needs to be powered for a long time to maintain the working state, there are ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a gas-electric dual-control auxiliary parking valve and a commercial vehicle braking system to solve the braking limitations, insufficient braking capacity and Brake reliability risk problem, realize gas-electric dual-control graded parking function

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