ELECTRIC-HYDRAULIC DRIVE Russian patent published in 2018 - IPC F15B9/03 

FIELD: machine industry.

SUBSTANCE: drive belongs to machine industry and can be used in tune-up volume closed-loop electric-hydraulic drives. Drive includes the third and fourth replenishment valves, dual spool double-trigge four-port flow control device, consisting of first spool distribution block with solenoid control and double spool flow control device with hydraulic control, wherein force main of boost pump is connected to the inputs of the third and fourth replenishment valves, the outputs of which are connected to the respective power trunks of the tune-up axial-piston pump, the force main of boost pump is additionally connected to the first channel, as well as with the third blanked off channel of the first spool distributor, the fourth channel of the first spool distributor is connected to the hydraulic control input of the hydraulic distributor of the second spool, and the second channel of the first spool distributor is connected to the fuel tank by the flow line , the first and second channels of the second spool flow control device are connected to each other and each of them are connected to the corresponding power trunk of the tune-up axial-piston pump, and the third and fourth channels of the second spool flow control device are disconnected and connected to the corresponding power trunk of the hydraulic motor.

EFFECT: technical result is an expansion of the possibilities of diagnosis and mastering of hydraulic machine and hydraulic equipment included in the electric-hydraulic drive.

1 cl, 1 dwg