| 摘要 |
<P>PROBLEM TO BE SOLVED: To suitably operate a hydraulic operation device capable of lessening the maximum necessary flow rate by supplying pressurized oil of a demanded flow rate when feeding pressurized oil fed from a hydraulic pump to a plurality of hydraulic operation devices with different levels of the maximum necessary flow rate in series. <P>SOLUTION: The pressurized oil fed from the hydraulic pump 26 is supplied to the plurality of hydraulic operation devices 20, 4, and 35 with different levels of the maximum necessary flow rate. The hydraulic operation device is provided with a flow rate limit means that limits the maximum flow rate supplied to the hydraulic operation device 4 into a designated flow rate smaller than a discharged flow rate of the pump 26 while a control valve 27 of the hydraulic operation device 4 lessening the maximum necessary flow rate is fully opened. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
