The invention discloses a high-safety parking relay valve and a parking braking system. The parking relay valve comprises a valve body, a piston, a mounting column, a return spring, a valve assembly and an exhaust seat. A valve port is formed in the middle of the valve body; the return spring acts between the piston and the valve port; the valve assembly is used for opening or closing the valve port; a sealing ring is arranged between the outer wall of the piston and the inner wall of the valve body; a control cavity is formed between the upper end of the piston and the upper end of the inner wall of the valve body, and a control opening is formed in the upper end of the valve body. An exhaust port is formed in the lower end of the exhaust seat, and a pressure relief hole is formed in the outer wall of the piston. In the parking state, when slight leakage air pressure of the air outlet of the hand valve enters the control port of the parking relay valve, air in the air inlet of the parking relay valve cannot enter the air outlet of the parking relay valve, air in the control port of the parking relay valve can be exhausted to the atmosphere, parking failure can be prevented, the anti-sliding function is achieved, and the safety performance is improved.
本发明公开一种高安全的驻车继动阀及驻车制动系统,所述驻车继动阀包括阀体、活塞、安装柱、回位弹簧、阀门组件以及排气座;所述阀体的中部设有阀口;所述回位弹簧作用在所述活塞与阀口之间;所述阀门组件用于开启或者关闭阀口;所述活塞的外壁与阀体的内壁之间设有密封圈;所述活塞的上端与所述阀体内壁的上端之间形成控制腔,所述阀体上端设有控制口;所述排气座的下端设有排气口,所述活塞的外壁设有泄压孔。在驻车状态时,当手阀出气口有轻微泄露气压进入驻车继动阀的控制口时,驻车继动阀的进气口中的气体不会进入驻车继动阀的出气口,而驻车继动阀的控制口中的气体会排向大气,可以防止驻车失效,实现了防溜车功能,提高了安全性能。
High-safety parking relay valve and parking braking system
一种高安全的驻车继动阀及驻车制动系统
2024-02-06
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
Parking braking reclamping control method, parking braking system and automobile
European Patent Office | 2024
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