ELECTROHYDRAULIC DRIVE Russian patent published in 2015 - IPC F15B9/03 

FIELD: electricity.

SUBSTANCE: angle-data transmitter of a piston cam plate for an adjustable axial-piston pump with the piston cam plate and hydraulic bearings with pistons contacting it, a summator, a return valve, and a hydraulic accumulator are introduced additionally to the drive. The pump control mechanism is electrohydraulic and an angle-data transmitter is coupled kinematically to the piston cam plate and by its electrical output the above transmitter is connected to the second input of the summator, which first input is the control input of the drive, the summator output is connected to an electrical input of the control mechanism, the pump line of the auxiliary pump through the return valve is connected to the hydraulic accumulator and the hydraulic input of the control mechanism.

EFFECT: increased efficiency factor of the electrohydraulic drive and decreased stable rotation speed of the hydraulic motor.

2 dwg