发明名称 Methods of controlling hydraulic motors
摘要 A hydraulic control system includes a first motor, a second motor, a pump operatively associated with the first motor, a first coupling valve operatively associated with the second motor, first parallel valves operatively associated with the second motor, and a first switching valve operatively associated with the first coupling valve and the first parallel valves. The first switching valve is configured to switch the first coupling valve between a first coupling state and a second coupling state opposite the first coupling state and to switch the first parallel valves between a first parallel state and a second parallel state opposite the first parallel state. While the first parallel valves are in the first parallel state a portion of the output of the first motor drives the second motor while the first parallel valves are in the second parallel state, the output of the pump drives the second motor.
申请公布号 US8172002(B2) 申请公布日期 2012.05.08
申请号 US201113295349 申请日期 2011.11.14
申请人 WREDE STEFAN;KRUSE CHRISTOF;LONGYEAR TM, INC. 发明人 WREDE STEFAN;KRUSE CHRISTOF
分类号 E21B4/02 主分类号 E21B4/02
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