| 摘要 |
The drives (34, 34 min ) of a vehicle are each driven by a pump (18) and motor (22) of a hydrostatic transmission (23). A servo-system (20) associated with each pump (18) is adapted to be controlled by a steering arrangement (35, 36) for selectively rotating the drives (34, 34 min ) relative to each other. An interlock valve (43, 44) is associated with each steering arrangement to stop the drives (34, 34 min ) of the vehicle when steering pedals (37, 38) thereof are both depressed into certain positions (N, R) of operation. Thus, the operator of the vehicle is prevented from placing the vehicle in an unwanted mode of operation, such as in reverse, when the operator desires another mode of operation, such as braking of the vehicle. |
