PUMP-ACCUMULATOR HYDRAULIC DRIVE TO ROTATE EARTH-MOVER PLATFORM Russian patent published in 2012 - IPC E02F9/22 

FIELD: construction.

SUBSTANCE: pump-accumulator hydraulic drive to rotate an earth-mover platform comprises a controlled pump, hydraulic distributors, safety and check valves, a hydraulic accumulator, a relay controller, connected to each other by hydraulic manifolds, and a controlled hydromotor. At the same time one of hydraulic distributors is installed between the controlled pump and the controlled hydromotor of platform rotation. Safety valves are valves with two adjustment pressures. The second hydraulic distributor is arranged between the controlled pump and the first hydraulic distributor, serving to change power streams from the controlled hydraulic pump to the hydraulic accumulator.

EFFECT: maximum use of kinetic energy of a rotary platform, reduced wear and lower loads in a mechanism of earth-mover platform rotation, reduced quantity of hydraulic scheme elements.

1 dwg