| 摘要 |
<p>PURPOSE: A tractor is provided to have improved efficiency by having front wheels that can be turned clockwise or counter clockwise. CONSTITUTION: A tractor is constituted as follows. Front wheels(21) are turned clockwise or counter clockwise to a maximum degree. The front wheels do not interfere with a front wheel axle. The front wheel axle is arranged upward along the height of the front wheel. The front wheel axle has a middle differential gear(130) in order to adjust the rotation difference of the front and rear wheels. The front wheel axle makes power distributed to a front wheel differential gear(51) and a rear wheel differential gear(54).</p> |
