ROTOR BEARING FOR MOTOR-PUMP

摘要

The fixed or variable displacement hydraulic motor-pump (1) includes a motor-pump central rotor (3) in which a hydraulic cylinder (14) is arranged, the rotor (3) being in sealed contact with an input-output spool valve (43) connecting the cylinder (14) with a motor-pump frame (2) while a hydraulic piston (13) moves in the cylinder (14) to push, using a hydraulic piston guided plunger (18), a tangential arm (22) articulated in the central rotor (3), and a tangential arm antifriction roller (28) on a motor-pump peripheral rotor (29) synchronized in rotation with the motor-pump central rotor (3).

主权项

1. A rotor bearing for a motor-pump according to the present invention, characterized in that it comprises an inner track (7, 38) provided with at least one inner ring (9, 40) on the one hand, and an outer track (8, 39) provided with at least one outer ring (10, 41) on the other hand, while at least three bearing rollers (6, 37) can roll simultaneously on the inner track (7, 38) and on the outer track (8, 39) and remain at a constant distance from one another owing to at least one roller pinion (87) included by each bearing roller (6, 37) and which cooperates with said inner (9, 40) and outer (10, 41) rings.