| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydraulic controller allowing miniaturization of a flow control valve. SOLUTION: This hydraulic controller has a first pump P1; a main flow valve Mv connected to the first pump P1; a control flow side circuit comprising one or more sub flow valves Sv connected to a control flow port 27 of the main flow valve Mv; an excessive flow circuit (a) connected to an excessive flow port 29 of the main flow valve Mv; and a second pump P2 for joining direct by pressure oil to the excessive flow port 29 side of the main flow valve Mv. A set flow rate in the control flow port 27 side of the main flow valve Mv is set to a total flow rate of maximum required flow rates of controlled objects connected to the control flow side circuit.</p> |
