公开(公告)号：US06490861B2

公开(公告)日：2002-12-10

申请号：US09813559

申请日：2001-03-21

申请人： Massimo Biggi ,  Angelo Gregorio ,  Enrico Sedoni

发明人： Massimo Biggi ,  Angelo Gregorio ,  Enrico Sedoni

IPC分类号： F16D3102

CPC分类号： B62D5/093

摘要： A hydraulic steering system for a tractor is provided which can be operated in a conventional steering mode or in a fast steering mode. In conventional steering mode, a conventional steering wheel and steering motor direct pressurized oil to the steerable wheels for selecting the turning direction, the turning angle, and the speed with which the turning angle is achieved. In fast steering mode, a fast-turning valve is controlled by the operator to direct oil directly to the steerable wheels, thereby by-passing the steering motor. The conventional steering wheel and steering motor continue however to control the steering operation.

摘要翻译： 提供了一种用于拖拉机的液压转向系统，其可以以常规转向模式或快速转向模式操作。 在常规转向模式中，传统的方向盘和转向马达将加压油直接转向可转向轮，用于选择转向角度，转向角度和达到转弯角度的转速。 在快速转向模式中，快速转向阀由操作者控制，以将油直接引导到可转向轮，从而旁路转向马达。 然而，传统的方向盘和转向马达仍然继续控制转向操作。