FIELD: engines and pumps.
SUBSTANCE: actuator comprises power hydraulic cylinder, pump the shaft of which is connected to electric motor, hydraulic motor, three-position hydraulic distributor through which stock cavity of power hydraulic cylinder in its first position is connected to pump, and pneumatic hydraulic accumulator the cavity of which is connected to hydraulic motor. Hydraulic cavity of pneumatic hydraulic accumulator is connected to hydraulic motor through hydraulic distributor in its first position and to pump - in the second position of hydraulic distributor, stock cavity of power hydraulic cylinder is connected through hydraulic distributor in its second position to hydraulic motor the shaft of which is connected to pump shaft.
EFFECT: summation of energy of electric motor and hydraulic motor is provided during operation for rotation of pump shaft, which increases the actuator efficiency.
1 dwg
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