OIL PRESSURE ENERGY RECOVERING/REGENERATING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide an oil pressure energy recovering/regenerating apparatus for recovering the energy of a return pressure oil from a hydraulic actuator and regenerating the recovered energy as a drive energy in a drive means. SOLUTION: The return pressure oil from the hydraulic actuator is fed to a hydraulic pump motor 1 as a recovery means via a feed pipe 13, the hydraulic pump motor 1 performs the motor operation and allows a hydraulic pump motor 2 mechanically connected to the hydraulic pump motor 1 as the recovery means to perform the pump operation. The pressure oil delivered from the hydraulic pump motor 2 is fed to a hydraulic pump motor 4 as a drive means and also accumulated in an accumulator 3. The pressure oil delivered by the hydraulic pump motor 2 and the pressure oil accumulated in the accumulator 3 drive the hydraulic pump motor 4 as the drive means. COPYRIGHT: (C)2004,JPO