The invention discloses an excavator hoisting working condition hydraulic system and a control method thereof in the technical field of engineering vehicles, and aims to solve the problems that in the prior art, the personal safety of operators and troubleshooting are affected due to the fact that hoisting operation of an excavator breaks down and heavy objects are suspended in the air. The system comprises a lifting module and a fault braking module. The fault braking module comprises a hydraulic control reversing valve, an emergency storage bin and a shuttle valve. The emergency storage bin is connected between the pilot pump and the pilot control valve, the hydraulic oil stored in the emergency storage bin is used for opening the main control valve, and the bat changing mechanism downwards extends out and descends under the gravity action of a heavy object; the device is suitable for the hoisting operation process of the excavator, and goods in faults can be safely lowered.
本发明公开了一种工程车辆技术领域的一种挖掘机吊装工况液压系统及其控制方法,旨在解决现有技术中挖掘机吊装作业出现故障,重物悬吊在半空滞留影响作业人员人身安全及排查故障等问题。其包括升降模块和故障制动模块;所述故障制动模块包括液控换向阀、应急储仓、梭阀;所述应急储仓连接于所述先导泵和所述先导控制阀之间,利用应急储仓储存的液压油开启所述主控阀,变蝠机构在重物的重力作用下向下,伸出下降;本发明适用于挖掘机吊装作业过程之中,能够使得故障中的货物安全下降。
Excavator hoisting working condition hydraulic system and control method thereof
一种挖掘机吊装工况液压系统及其控制方法
2022-06-10
Patent
Electronic Resource
Chinese
Hoisting control method, working machine, and hoisting control system
European Patent Office | 2023
|Hydraulic Excavator Control System
SAE Technical Papers | 1972
|