| 摘要 |
PURPOSE:To make the swing angle of running wheels large as well as to facilitate the easy workability of assembly by providing a pinion at the swing center of the running wheels whereby fixing firmly an actuator case which pivotally mounts the running wheels underneath a vehicle body. CONSTITUTION:A steering device 6 has an actuator case 15 mounted firmly underneath a vehicle body 2 with bolts 14. And a suspension bracket 7 is pivotally mounted on the actuator 15 via a turn table bearing 16 for providing a pinion 18 by a coupling having freedom with the bracket 7. And racks 19 and 20 which are meshed with said pinion 18 are arranged in the case 15 wherein a piston 21 is provided at both ends of the racks 19 and 20, and furthermore cylinders 23-26 are arranged in the case 15 respectively. Owing to this constitution, operation oil supplied to cylinders 24 and 25 is changed over for moving the racks 19 and 20 so as to rotate the pinion 18 followed by the swing of running wheels. |
