The invention relates to a hydraulic steering system and provides a steering flow control valve, a hydraulic steering system and wheel type walking equipment in order to solve the problem that a main valve element in an existing steering flow control valve reverses instantly under the action of high-pressure oil. The left pilot oil port is connected with the valve rod hydraulic control left end of the main valve through a left oil way of the left selection valve and a right oil way of the right selection valve, and the right pilot oil port is connected with the valve rod hydraulic control left end of the main valve through the left oil way of the right selection valve and the right oil way of the left selection valve; when the main valve is in the left position, the valve rod hydraulic control right end of the main valve is communicated with a main valve left working oil port through a left selector valve left oil way and a one-way valve, and when the main valve is in the right position, the valve rod hydraulic control left end of the main valve is communicated with a main valve right working oil port through a right selector valve left oil way and a one-way valve. According to the invention, the problem that the closing of the corresponding right selection valve or the left selection valve is delayed when pilot oil is fed into the left pilot oil port or the right pilot oil port is solved.
本发明涉及液压转向系统,为解决现有转向流量控制阀中主阀芯在高压油液作用下瞬间换向的问题,本发明构造一种转向流量控制阀、液压转向系统和轮式行走设备,其中转向流量控制阀中,左先导油口经左选择阀的左位油路、右选择阀的右位油路与主阀的阀杆液控左端连接,右先导油口经右选择阀的左位油路、左选择阀的右位油路与主阀的阀杆液控左端连接;主阀左位时其阀杆液控右端经左选择阀左位油路和单向阀与主阀左工作油口连通,主阀右位时其阀杆液控左端经右选择阀左位油路和单向阀与主阀右工作油口连通。在本发明中,解决了左先导油口或右先导油口进先导油进油时对应的右选择阀或左选择阀关闭延迟的问题。
Steering flow control valve, hydraulic steering system and wheel type walking equipment
转向流量控制阀、液压转向系统和轮式行走设备
20.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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