ELECTROHYDRAULIC DRIVE Russian patent published in 2019 - IPC F15B9/03 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in high-precision high-speed electrohydraulic drives (EHD) of tracking systems. In EHD, comprising drive motor, kinematically connected to it adjustable pump (AP), hydraulic motor, position electro-hydraulic control mechanism consisting of a position sensor, an adder and an electro-hydraulic control mechanism, an auxiliary pump kinematically connected to the shaft AP, safety valve, first and second make-up valves, filling tank, actuator kinematically connected to hydraulic motor shaft or rod, hydraulic motor and AP are connected by volume-closed power hydraulic lines, additional auxiliary pump is introduced kinematically connected to shaft AP, and additional safety valve.

EFFECT: increased range of control and improved dynamic characteristics of EHD, as well as efficient use of hydraulic energy, id est higher efficiency of EHD.

1 cl, 2 dwg