The invention discloses a control valve, a wet brake steering system of engineering machinery and the engineering machinery. The control valve comprises a valve body, a hydraulic reversing valve, a one-way valve, a shuttle valve and an electromagnetic reversing valve, the valve body is provided with an oil inlet, an oil return port, a working oil port, a first control valve LS oil port, a second control valve LS oil port and a third control valve LS oil port of the control valve; an oil inlet and an oil return port of the hydraulic reversing valve are respectively connected with an oil inlet and an oil return port of the control valve, a first control end is communicated with a working oil port of the control valve and a working oil port of the hydraulic reversing valve, and a second control end is communicated with a working oil port of the hydraulic reversing valve; an oil inlet and an oil outlet of the one-way valve are connected with an oil inlet and a working oil port of the control valve; a first oil port, a second oil port and a third oil port of the shuttle valve are respectively connected with an LS oil port of the first control valve, an LS oil port of the second control valve and a working oil port of the electromagnetic reversing valve; an oil inlet of the electromagnetic reversing valve is connected with an LS oil port of the third control valve, and an oil return port of the electromagnetic reversing valve is connected with an oil return port of the hydraulic reversing valve. According to the invention, oil source sharing of working, steering and braking can be realized.
本发明公开了一种控制阀、工程机械湿式制动转向系统及工程机械,包括阀体、液压换向阀、单向阀、梭阀和电磁换向阀;阀体上设有控制阀的进油口、回油口、工作油口、第一控制阀LS油口、第二控制阀LS油口、第三控制阀LS油口;液压换向阀的进油口和回油口分别与控制阀的进油口和回油口连接,第一控制端与控制阀的工作油口和其自身的工作油口连通,第二控制端与其自身的工作油口连通;单向阀的进油口和出油口与控制阀的进油口和工作油口连接;梭阀的第一油口、第二油口和第三油口分别与第一控制阀LS油口、第二控制阀LS油口和电磁换向阀的工作油口相连;电磁换向阀的进油口与第三控制阀LS油口连接,回油口与液压换向阀的回油口连接。本发明可实现工作、转向与制动共享油源。
Control valve, wet brake steering system of engineering machinery and engineering machinery
一种控制阀、工程机械湿式制动转向系统及工程机械
2024-12-17
Patent
Electronic Resource
Chinese
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