| 摘要 |
It has hydraulic pumps that are connected to a main gasoline or diesel engine (2), and hydraulic motors that actuate the wheels. It includes four hydraulic motor reduction units (6, 7, 8 and 9) with a braking and parking device, attached to the wheels of the vehicle. There are two shunt hydraulic circuits in which respective hydraulic pumps (3, 4) connected to the power supply of the main engine (2) intervene, turning at the same time. These hydraulic pumps (3, 4) send the oil flow to the front motor reduction units (8, 9) and the rear motor reduction units (6, 7), said hydraulic pumps (3, 4) being controlled by pedal servocontrols (10, 11) for forward motion and reverse motion respectively. The circuits of each pump (3, 4) are shunt connected by means of flow regulators (12, 13) in order to compensate the greater or lesser effort of each wheel, functioning as a conventional differential set. The hydraulic motor reduction units (6, 7, 8 and 9) include manual mechanical deblocking devices (15) in order to permit towing in the event of a breakdown. <IMAGE> |
