ELECTROHYDRAULIC VIBRATOR Russian patent published in 2013 - IPC F15B21/12 B06B1/18 

FIELD: machine building.

SUBSTANCE: electrohydraulic vibrator includes a back-and-forth pump, suction and discharge hydraulic lines with valves of direct and return action, which are installed in them, a power hydraulic cylinder and an electromechanical converter. Electromechanical converter includes an electric motor, a multiplier, at the outlet shaft of which an eccentric cam mechanism is fixed, which contacts a plate-type pusher pressed with a return spring installed on a pump stock.

EFFECT: improving positioning accuracy at static and dynamic loads and maintaining linear dependence of amplitude of vibrations on the frequency specified with the electric motor; improving reliability and durability of electrohydraulic vibrator.

2 cl, 1 dwg