The invention relates to a tractor trailer hydraulic system and a tractor, the tractor trailer hydraulic system comprises an oil tank, a trailer brake system, a steering system and a trailer brake valve, the trailer brake valve is provided with a port CL and a port SL, the trailer brake valve comprises a service brake pilot valve, a parking brake electromagnetic valve, a parking brake pilot valve and a logic valve, the oil tank is simultaneously connected to the steering system and the service brake pilot valve, the trailer brake system is connected to the service brake pilot valve, and the steering system is connected to the parking brake electromagnetic valve and the parking brake pilot valve. The service braking pilot valve is connected to the CL port, the T2 port is connected to the oil tank, the parking braking electromagnetic valve is connected to the parking braking pilot valve and the logic valve, and the parking braking electromagnetic valve is connected to the oil tank. By the adoption of the technical scheme, the technical problem that existing trailer braking may fail due to pipeline breakage during single-pipeline control, and driving safety and reliability are affected can be solved.
本发明涉及一种拖拉机拖车液压系统及拖拉机,其中,一种拖拉机拖车液压系统,包括油箱、拖车制动系统、转向系统以及拖车制动阀,所述拖车制动阀设置有CL口和SL口,拖车制动阀包括行车制动先导阀、驻车制动电磁阀、驻车制动先导阀以及逻辑阀,油箱同时连接于转向系统和行车制动先导阀,拖车制动系统连接于行车制动先导阀,转向系统连接于驻车制动电磁阀和驻车制动先导阀,且行车制动先导阀连接于CL口,T2口连接于油箱,驻车制动电磁阀连接于驻车制动先导阀和逻辑阀,驻车制动电磁阀的连接于油箱。采用本发明的技术方案,可改善现有的挂车制动可能因单管路控制时管路出现破裂而失效,影响行车安全性和可靠性的技术问题。
Tractor trailer hydraulic system and tractor
一种拖拉机拖车液压系统及拖拉机
2024-10-22
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |