HYDRAULIC MOTOR WITH RECIPROCATING AND ROTARY MOVEMENT OF OUTPUT LINK Russian patent published in 1999 - IPC

FIELD: materials handling facilities; working member of safety device with hydraulic drive for electromagnetic grip. SUBSTANCE: hydraulic motor has housing 1 with covers 2 and 3, hollow piston 6 with cover 9 and with output link 7 installed in housing to form working spaces 4 and 5. Piston 6 has turnable vane motor, it serves as motor housing and is provided with two drain holes with check valves connecting in turn vane motor spaces with lower working space 5. Piston cover has two holes 10 placing in turn spaces of vane motor in communication with upper working space 4. Plate of turnable motor is rigidly coupled with output link 7 made for rotation and translational movement and is furnished with permanent magnets. Pull-back springs are installed on inner surface of vane motor. EFFECT: enhanced reliability of operation. 5 dwg