The invention relates to a hydraulic balance valve, and discloses a winch balance valve, a winch hydraulic system and hoisting engineering machinery, the winch balance valve comprises a balance valve core, a winch brake valve used for controlling a winch brake, a shuttle valve, a first oil port, a second oil port and a third oil port, the balance valve element is arranged on an oil way between the first oil port and the second oil port, and the shuttle valve comprises a first oil inlet connected with the first oil port, a second oil inlet connected with the third oil port and an oil outlet connected with a control port of the winch brake valve. The winch brake valve comprises an oil inlet used for being connected with a system low-pressure control oil way. According to the winch balance valve, when the load pressure is low, the winch brake can be opened, energy waste is reduced, and the stability of a winch system is improved.
本发明涉及液压平衡阀,公开了一种卷扬平衡阀、卷扬液压系统以及起重工程机械,该卷扬平衡阀包括平衡阀阀芯、用于控制卷扬制动器的卷扬制动阀、梭阀、第一油口、第二油口以及第三油口,所述平衡阀阀芯布置在所述第一油口与所述第二油口之间的油路上,所述梭阀包括与所述第一油口连接的第一进油口、与所述第三油口连接的第二进油口以及与所述卷扬制动阀的控制口连接的出油口,所述卷扬制动阀包括用于与系统低压控制油路连接的进油口。本发明卷扬平衡阀在负载压力较低时,也能使卷扬制动器打开,降低能源浪费,提升卷扬系统稳定性。
Winding balance valve, winding hydraulic system and hoisting engineering machinery
卷扬平衡阀、卷扬液压系统及起重工程机械
2022-11-29
Patent
Electronic Resource
Chinese
Winding balance valve, winding hydraulic system and hoisting engineering machinery
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