| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable and convenient steering device of good operability for a wheeled working machine capable of steering two wheels with a solid and reliable mechanism when travelling at high speed and capable of lightly steering four wheels with the only operation of a steering wheel when travelling at low speed. SOLUTION: This steering device 20 is provided with a mechanical steering means 22 for steering front wheels in accordance with the rotating operation of the steering handle by connecting the steering wheel 21 arranged inside a cab 6 to a tie rod 16 for changing direction of front wheels 2L and 2R so as to transmit steering force, a full-hydraulic steering means 25, having a plurality of steering cylinders 23 and 24 for respectively changing direction of the front wheels and rear wheels 3L and 3R, for steering at least one of the front wheels and the rear wheels by introducing hydraulic oil to predetermined steering cylinders in accordance with the rotating operation of the steering wheel and a selected mode, and a switching means 26 for switching means so as to selectively actuate one of the mechanical steering means and the full-hydraulic steering means. COPYRIGHT: (C)2006,JPO&NCIPI |
