| 摘要 |
<p>The invention concerns a machine comprising two groups of displacing members (1, 2, 3, 4) one of which is for steering. The device comprises a closed transmission circuit which includes a pump (50) and hydraulic motors (10, 20, 20, 40). A first group of engines for driving the two displacement members of a common axle, comprises two double motors (30, 40) with two operating displacements forming two elementary motors (31, 32; 41, 42). The first elementary motor (31, 41) of each of said double motors is connected to the pump (50) in parallel with a motor (10, 20) of the other group of motors, while the second elementary motor (32, 42) is connected in series with said motor of the other group. Thus there is a first and a second series flowline (C32, C42) between the motors. Said series flowlines are connected to a low pressure circuit through means (66) to limit the pressure in the series flowlines (C32, C42), and the device comprises means (R58, R60, R62) to limit the fluid flow rate circulating between the series flowlines and the low pressure circuit.</p> |
