| 摘要 |
A hydraulic controller for a hydraulic actuator ( 6 ) incorporated in a power transmission mechanism, wherein an accumulator ( 16 ) is connected to an oil supply passage ( 14 ) for the hydraulic actuator ( 6 ) for supplying oil from a pump ( 10 ) via a regulator ( 11 ) and a one-way valve ( 12 ) and a lubricating oil passage ( 20 ) for the power transmission mechanism is connected to the regulator 11 in the drain side thereof, by which energy consumption can be reduced maximally even if the pump ( 10 ) is regularly driven for lubrication. It is provided with a hydraulic pressure switching means ( 19 ) capable of freely switching a setting pressure of the regulator ( 11 ) between a high pressure and a low pressure. While the hydraulic pressure of the oil supply passage ( 14 ) is higher than or equal to a pressure at which the hydraulic actuator ( 6 ) can be operated, the controller maintains the setting pressure of the regulator ( 11 ) at the low pressure to reduce a work load of the pump 10. |
