The invention relates to the technical field of trailer control, and provides a trailer control valve and a trailer control system. The trailer control valve comprises a relay piston and a balance piston arranged in a first cavity of the relay piston, the two end faces of the relay piston are communicated with the control port and located in the brake cavity respectively, the balance piston is connected with the bottom wall of the first cavity through a forward spring, and a space communicated with the brake cavity is reserved between the balance piston and the top wall of the first cavity. The adjusting piston is arranged in the second cavity of the relay piston, extends into the first cavity and is over against the valve port of the balance piston; and the ahead amount adjusting port is communicated with the second cavity, and the adjusting piston is pushed to change the distance between the adjusting piston and the valve port along with the change of the air pressure of the ahead amount adjusting port, so that the air pressure of the air outlet relative to the control port is changed ahead amount. By means of the adjusting piston, the air pressure ahead amount of the trailer control valve can be automatically adjusted along with the air pressure change of the ahead amount adjusting opening, so that the consistency of main trailer braking is improved, and the safety performance of a vehicle is improved.
本发明涉及挂车控制技术领域,提供一种挂车控制阀和挂车控制系统。挂车控制阀包括:继动活塞和设置于继动活塞的第一腔室中的平衡活塞,继动活塞的两端面分别连通控制口和位于制动腔中,平衡活塞通过越前量弹簧连接第一腔室的底壁、且与第一腔室的顶壁之间留有连通制动腔的空间;调整活塞,设置于继动活塞的第二腔室中,并伸入第一腔室、正对平衡活塞的阀口;越前量调整口,连通第二腔室,随越前量调整口的气压改变,调整活塞被推动以改变与阀口之间的距离,使出气口相对控制口的气压越前量改变。本发明利用调整活塞,能够实现随越前量调整口的气压变化自动调整挂车控制阀的气压越前量,以提高主挂制动的一致性,提升车辆的安全性能。
Trailer control valve and trailer control system
挂车控制阀和挂车控制系统
2023-04-18
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |