| 摘要 |
PROBLEM TO BE SOLVED: To provide a steering device enabling smooth running by reducing tire wear due to slip of a tire when a trailer vehicle runs on a curved road. SOLUTION: A turn cylinder 30 capable of adjusting a turn angle of a rear wheel 14 is attached, and a turn angleθ1 of a tractor is detected to select a turn angleθ2 of the rear wheel set in advance based on the turn angleθ1 of the tractor as a set angleθs. Stroke adjustment of the turn cylinder 30 is done based on a differenceθe between the set angleθs and the turn angleθ2 of the rear wheel. |
