FIELD: lifts and elevators.
SUBSTANCE: in proposed lift oil flow between hydraulic drive 2 of lift cabin through pipeline 11 of cylinder and hydraulic accumulator 17 through pipeline 16 of hydraulic accumulator can be created by pump 13 driven by motor 14 operating on base of signals of control and adjusting unit 25 from power regulator 24. Hydraulic accumulator 17 can be filled with oil from tank 21 by means of charger 18 driven by electric motor 9 and controlled by pressure relay 22. Shutoff valve 12 of cylinder pipeline is arranged between cylinder pipeline 11 laid to hydraulic drive 2 and pump 13. Pump 13 is directly connected with hydraulic accumulator 17 through pipeline 16 of hydraulic accumulator. Means 30, 31, 13' are provided by means of which discharge of hydraulic accumulator 17 can be prevented when lift stops. When implementing proposed method, leakage cutoff valve 31 arranged between drain of pump 13 and tank 21 in drain line 30 and controlled by unit 25 is closed when lift stops and it opens when pump 13 starts operating.
EFFECT: provision of energy saving and comfortable operation of hydraulic lift.
7 cl, 5 dwg
