The invention discloses an air brake system in the field of engineering machinery. The air brake system comprises a foot brake valve; a hand brake valve, a two-axle pneumatic control device and an air machine; the two-axle air control device comprises a first loop air cylinder, a second loop air cylinder, a second brake valve assembly and a spring energy storage brake air chamber set, wherein the first loop air cylinder, the second loop air cylinder, the second brake valve assembly and the spring energy storage brake air chamber set are connected with the foot brake valve and the hand brake valve. The second brake valve assembly controls whether the first loop air cylinder and the second loop air cylinder are communicated with the spring energy storage brake air chamber set or not. A first bridge pneumatic control device; the first-bridge air control device comprises a third loop air cylinder connected with the foot brake valve, a first brake valve assembly and a diaphragm type brake air chamber set. The first brake valve assembly controls whether the third loop air cylinder is communicated with the diaphragm type brake air chamber set or not. By means of the design of the first brake valve assembly and the second brake valve assembly, service braking and parking braking can be achieved synchronously; in this way, the braking capacity of the whole machine can be improved within a short time, the slope holding angle of the whole machine is increased, and the application scene of the vehicle is improved.
本申请公开了工程机械领域中的一种气压制动系统,其包括脚制动阀;手制动阀、二桥气控装置、空气机;所述二桥气控装置包括连接所述脚制动阀、所述手制动阀的回路储气筒一、回路储气筒二、制动阀组件二以及弹簧储能制动气室组,所述制动阀组件二控制所述回路储气筒一、回路储气筒二的是否连通弹簧储能制动气室组;一桥气控装置;一桥气控装置包括连接所述脚制动阀的回路储气筒三、制动阀组件一以及膜片式制动气室组,制动阀组件一控制所述回路储气筒三是否连通膜片式制动气室组;本申请中制动阀组件一、制动阀组件二的设计可实现行车制动与驻车制动同步起作用;这样可以短时间内提高整机的制动能力,提高了整机的驻坡角度,提升车辆的适用场景。
Air braking system and crane
一种气压制动系统及起重机
02.08.2024
Patent
Elektronische Ressource
Chinesisch
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