| 摘要 |
PROBLEM TO BE SOLVED: To provide a hybrid type hydraulic device capable of collecting the return oil of high pressure which is not conducive to the operation of an actuator, as energy.SOLUTION: A hybrid type hydraulic device includes actuators 1, 81A, and 81B; a hydraulic pump 3 for feeding hydraulic oil to the actuators 1, 81A, and 81B; a regenerating hydraulic motor 102 to which the hydraulic oil to be returned to an oil tank is supplied from the actuators 1, 81A, and 81B; a generator 103 driven by the regenerating hydraulic motor 102; and a main relief valve 21 for controlling the discharge pressure of the hydraulic pump 3. A downstream side of the main relief valve 21 and an upstream side of the regenerating hydraulic motor 102 are connected. |
