Electric control braking relay valve

Abstract

The invention relates to an electric control braking relay valve. The electric control braking relay valve is characterized in that a magnetic valve is a two-position three-way magnetic valve, a magnetic valve air inlet communication hole and a braking chamber wheel cylinder communication hole are formed in the two sides of a shell body of a cylinder respectively in parallel, located between the lower portion of a small piston and the upper portion of an ejector rod of a valve, and both communicated with the bottom of a small air cylinder, a magnetic valve air outlet communication hole is formed in the shell body of the cylinder, located in the middle of the small piston and communicated with the bottom of a big air cylinder through a communication pore channel formed in a corresponding position of the shell body of the cylinder, a through inversed-L-shaped exhaust pore channel is formed from the middle of the small piston to the middle of the bottom of the ejector rod of the valve, and an exhaust hole communicated with the exhaust pore channel is formed in a corresponding position of the shell body of the cylinder. The electric control braking relay valve has the advantages that braking pressure can be adjusted according to the needs of an empty car and a loaded car, emergency braking can be achieved firmly under the condition of the loaded car, steady speed reduction can be achieved under the condition of the empty car, early locking is avoided, a tire is prevented from skidding off the ground and sidesliping to be broken, the fast braking effect is good, exhaust speed is high, the pressure ratio during braking can be ensured, safety and reliability are achieved, and the probability of traffic accidents is reduced.

Description

technical field [0001] The invention relates to a brake relay valve, in particular to an electronically controlled brake relay valve. Background technique [0002] None of the existing electronically controlled brake relay valves can adjust the braking air pressure of the electronically controlled brake relay valve according to the needs of empty or heavy vehicles. Either the heavy vehicle brakes firmly, but the empty vehicle is prone to premature lockup, the tires are easy to jump, wear, gnaw, and the sideslip is serious; or the empty vehicle brakes firmly, but the heavy vehicle does not brake firmly; the braking distance is long and the exhaust is slow , the rapid braking effect is poor, and the safety cannot be guaranteed; the volume is large, the cost is high, and the installation is inconvenient. Contents of the invention [0003] In view of the above problems, the purpose of the present invention is to provide an electronically controlled brake relay valve that can ...

AI Technical Summary

Problems solved by technology

[0002] None of the existing electronically controlled brake relay valves can adjust the brake air pressure of the electronically controlled brake relay valve according to the needs of empty or heavy vehicles

Either the heavy vehicle brakes firmly, but the empty vehicle is prone to premature lockup, the tires are easy to jump, wear, gnaw, and the sideslip is serious; or the empty vehicle brakes firmly, but the heavy vehicle does not brake firmly; the braking distance is long and the exhaust is slow , the fast braking effect is poor, and the safety cannot be guaranteed; the volume is large, the cost is high, and the installation is inconvenient

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