A hydraulic system of a rotary drilling rig comprises an open type driving system, a main winch closed type driving system and a main winch loading system. The open type driving system comprises a first open type pump and a second open type pump, wherein the first open type pump drives a first actuator through a first control valve; and the second open pump can participate in driving the first actuator through the second control valve. The main winch closed type driving system comprises a closed type pump and a closed type motor, and the closed type pump is coupled with a rotating shaft of the second open type pump. The main winch loading system comprises a main winch loading valve and a loading control valve. When the main winch loading system is in an effective state, the control unit of the hydraulic system keeps the requirement of the main winch loading system for the second open type pump and the loading control valve and cancels the requirement of the first actuator for the second open type pump and the second control valve in the composite action including main winch lowering and first actuator actuation.
一种旋挖钻机液压系统包括开式驱动系统、主卷扬闭式驱动系统和主卷扬加载系统。所述开式驱动系统包括:第一开式泵,其经第一控制阀驱动第一执行器;第二开式泵,其能够经第二控制阀参与驱动第一执行器。所述主卷扬闭式驱动系统包括闭式泵和闭式马达,所述闭式泵和所述第二开式泵的转轴之间耦联。所述主卷扬加载系统包括主卷扬加载阀和加载控制阀。所述液压系统的控制单元在主卷扬加载系统有效的状态下、在包含主卷扬下放和第一执行器作动的复合动作中,保留主卷扬加载系统对所述第二开式泵和加载控制阀的需求,取消所述第一执行器对所述第二开式泵和第二控制阀的需求。
Hydraulic system for rotary drilling rig
用于旋挖钻机的液压系统
2023-09-15
Patent
Electronic Resource
Chinese
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