| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pressurized oil supply device which can change over the confluence and diffluence of a plurality of hydraulic pump lines according to the driving conditions of a plurality of actuators. SOLUTION: This pressurized oil supply device is equipped with a flow joining/dividing valve 40 which joins and divides the discharge pressurized oil of a first hydraulic pump 1 and the discharge pressurized oil of a second hydraulic pump 11. This flow joining/dividing valve 40 is made to be in a diffluence condition by driving a second hydraulic actuator 16 and also made to be in a confluence condition having priority over others by driving a third hydraulic actuator 16. Therefore, even though an operating valve changed over by manual operation is used, the flow joining/dividing valve 40 is automatically changed over to the diffluence condition and the confluence condition according to the operation of the operating valve, thus operation is facilitated. Unintended difference in flow for an operator may not be produced between a first actuator and a second actuator by driving the third actuator 21.</p> |
