| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hydraulic control capable of being simplified for the constitution of the whole system. <P>SOLUTION: In the hydraulic control, one circuit system A comprises a control valve 6 to control the supply flow rate of working fluid from a pump P1 into an actuator 1, a bleed-off valve 7 to conduct the bleed-off control of working fluid from the pump P1 installed in the position branched from the upstream side passage of the control valve 6, an inside passage 35 connected to the pump P1 installed in the control valve, and a merging valve 8 connected to the inside passage 35 via a communication passage 37 communicating thereto. Working fluid of a pump P2 is supplied into another actuator 2 corresponding to a switching position of a control valve 25 in another circuit system B, and working fluid of the pump 1 in the circuit system A is supplied into another actuator 2 connected to the other circuit system B corresponding to the switching position of the merging valve 8. The inside passage 35 installed in the control valve 6 for the circuit system A is controlled for an opening area corresponding to switching quantity of the control valve 6 in the circuit system A. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
