The invention relates to the technical field of braking, and provides a relay valve and a braking system. The relay valve comprises a first shell, a second shell and a relay piston, a control cavity is defined between the relay piston and the first shell, the first shell is provided with a control connector, a brake cavity is defined between the relay piston and the second shell, and the second shell is provided with an exhaust connector; the relay valve further comprises a first check valve and a second check valve, the first check valve is arranged in the communication cavity, and the first check valve can cut off the communication cavity under the air pressure effect of the control cavity and can conduct the communication cavity under the air pressure effect of the brake cavity; and in the state that the brake is released and the exhaust connector is blocked, gas pressure in the brake cavity pushes the first check valve to communicate with the communicating cavity. According to the relay valve, when brake is released, if the exhaust connector is blocked, gas in the brake cavity can push the first check valve to conduct the communicating cavity, so that brake pressure is exhausted through the control connector, and the safety of a vehicle is improved.
本发明涉及制动技术领域,提供继动阀和制动系统。继动阀包括第一壳体、第二壳体和继动活塞,继动活塞与第一壳体之间限定控制腔、第一壳体开设有控制接口,继动活塞与第二壳体之间限定制动腔、第二壳体开设有排气接口;第一壳体还开设有连通控制腔和制动腔的连通腔,继动阀还包括:第一止回阀,设置在连通腔中,第一止回阀能在控制腔的气压作用下截断连通腔、并能在制动腔的气压作用下导通连通腔;在制动释放且排气接口堵塞的状态下,制动腔中的气体压力推动第一止回阀导通连通腔。本发明的继动阀在制动释放时,若排气接口堵塞,制动腔内的气体能够推动第一止回阀导通连通腔,以通过控制接口排出制动压力,提高车辆的安全性。
Relay valve and brake system
继动阀和制动系统
2023-11-24
Patent
Elektronische Ressource
Chinesisch
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |