| 摘要 |
PROBLEM TO BE SOLVED: To lower a fork at a constant speed to perform regeneration, regardless of the weight of cargo.SOLUTION: Regenerative hydraulic equipment for an industrial vehicle includes: an actuator 2 to be driven by a working fluid to be supplied from a pump 13; a direction control valve 31 for selecting whether to supply/receive the working fluid to/from the actuator 2; a cylinder line 8 for introducing the working fluid discharged from the actuator 2 into the direction control valve 31; a hydraulic motor 42 to be driven by the working fluid discharged from the actuator 2; a power generator 43 to be driven by the hydraulic motor 42; a capacitor 11 for storing the power generated by the power generator 43; a regenerative switch valve 41 for controlling the amount of working fluid to be supplied to the hydraulic motor 42 according to the pressure of the cylinder line 8; a return line 7 for introducing the working fluid passing through the direction control valve 31 into the regenerative switch valve 41; and a pressure control valve 35 for controlling a pressure difference between the cylinder line 8 and the return line 7 to be constant. |
