| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a hydraulic control valve device capable of easily changing a drive priority order for actuators, and properly adjusting the drive speed thereof. SOLUTION: Regarding a hydraulic control valve device formed out of a hydraulic circuit for driving a plurality (two) of actuators 10 and 12 with a single pump 18 via respective control valves 14 and 16 used for feeding pressure oil received from the pump 18 to a feed passage 24 for the actuators 10 and 12 through tandem and parallel connection passages 20 and 22, the connection part 26 of the parallel connection passage 22 of the control valve 14 is provided with a load check part 50 having a control means 40 (piston) operable on external signal pressure (p). In addition, the control means 40 is provided with a compensation means 42 (a pressure compensation chamber formed at the opposite side of the passage connection part 26 of the piston 40 and loaded with the hydraulic pressure P in the parallel passage connection part 26), in order to offset the action force of the hydraulic pressure P existing in the parallel passage connection part 26 (practically the feed passage 24) and acting on the control means 40.</p> |
