The invention provides an automatic protection system for winch overload, which comprises a winch control system, the winch control system comprises an oil tank, a driving oil way, a second control valve group, a detection component and a motor, and the driving oil way comprises a pilot overflow valve and a balance valve. The oil tank is connected with a first port and a second port of the motor through an oil inlet pipeline and an oil outlet pipeline, a pilot-operated overflow valve is arranged between the oil inlet pipeline and the oil return pipeline, the oil inlet end of the pilot-operated overflow valve is connected with the oil inlet pipeline, and the oil outlet end of the pilot-operated overflow valve is connected with the oil return pipeline. The balance valve is arranged between the oil inlet end of the pilot overflow valve and the oil inlet pipeline; by means of the structure, the oil drainage pressure of the overflow valve can be adjusted according to the oil drainage pressure currently needed by the crane, and therefore it can be guaranteed that a hydraulic oil way is kept stable, the oil drainage pressure of the overflow valve does not need to be manually adjusted, and the working efficiency is high.
本发明提供一种用于绞车超载的自动保护系统,包括绞车控制系统,所述绞车控制系统包括油箱、驱动油路、第二控制阀组、检测部件和马达,驱动油路中包括先导溢流阀和平衡阀,油箱通过进油管道和出油管道连接马达的第一端口和第二端口,在进油管道和回油管道之间设有先导式溢流阀,所述先导式溢流阀的进油端连接进油管道,先导式溢流阀的出油端连接回油管道,平衡阀设置在先导溢流阀的进油端和进油管道之间;上述结构,能够根据吊机当前所需的泄油压力对溢流阀的泄油压力进行调节,从而能够保证液压油油路保持稳定,无需手动调节溢流阀的泄油压力,使得工作效率高。
Automatic protection system for winch overload
一种用于绞车超载的自动保护系统
2025-02-25
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |