| 摘要 |
A hydraulic steering mechanism of a vehicle comprises a hydraulic distributor (1) connected kinematically and hydraulically to a feed-back hydraulic machine (2). The feed-back hydraulic machine (2) comprises, evenly spaced along a circumference, peripheral gears (16, 17, 18), each being mounted on its axle and kinematically connected to a driving gear wheel (9). The system for supplying the working liquid comprises pairs of openings provided in each cover of each peripheral gear (16, 17, 18). First openings are hydraulically connected to each other and to a first hydraulic line (21) through grooves (27) in the corresponding covers. Second openings are hydraulically connected, through radial grooves (30) in each cover, to an annular cavity (31) which is formed by a central opening (32) in the driving gear wheel (9) and by a driving shaft (8) mounted inside it with an annular gap, and which is connected to a second hydraulic line (22). |
