| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hydraulic control device that can reduce frequency of supply and discharge of pressure oil in hydraulic control of an actuator. <P>SOLUTION: The hydraulic control device includes: a hydraulic supply means 4 for selectively switching between a state in which pressure oil is supplied from hydraulic sources 1, 5 to the actuator 7 and a state of stopping the supply; and a hydraulic discharge means 10 for selectively switching between a state of discharging the pressure oil of the actuator 7 and a state of stopping the discharge. A hydraulic control means 8 communicates with the actuator 7, which is constituted to reduce hydraulic pressure of the actuator 7 by receiving and accumulating the pressure oil of the actuator 7 and to increase the hydraulic pressure of the actuator 7 by supplying the accumulated oil pressure to the actuator 7 in a state of stopping the hydraulic supply means 4 and the hydraulic discharge means 10, respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
