HYDRAULIC DRIVE OF THE WORKING EQUIPMENT OF THE CONSTRUCTION MACHINE Russian patent published in 2022 - IPC E02F9/22 

FIELD: construction vehicles.

SUBSTANCE: invention relates to construction and road vehicles, namely hydraulic drives of working equipment. The hydraulic drive of the working equipment of the construction machine includes a hydraulic cylinder, the first unregulated hydraulic pump connected to the inlet of the hydraulic distributor. The second unregulated hydraulic pump connected by the output of one hydraulic line through a reverse hydraulic valve to the inlet of the hydraulic distributor and the second hydraulic line through a controlled hydraulic valve with a hydraulic tank. The hydraulic drive is equipped with a hydraulic accumulator, an adjustable hydraulic throttle and an electric switch. The cavities of the hydraulic cylinder drive of the working body of the construction machine are connected to the outputs of the hydraulic distributor. The second unregulated hydraulic pump is communicated via an adjustable hydraulic throttle with a hydraulic accumulator. The controlled hydraulic valve is electrically controlled and its control coil is connected by an electrical line through an electric switch to the contacts of the switch built into the control unit of the hydraulic distributor on the control panel in the driver’s cab.

EFFECT: increase in productivity and a reduction in energy costs.

1 cl, 1 dwg