| 摘要 |
PROBLEM TO BE SOLVED: To provide a tractor capable of securing good the easiness in the steering operation by installing a rotation restricting piece protrusively on a stationary side case forming body, installing a piece with rotation restricted on a knuckle arm, and restricting rotation of a rotary side case forming body. SOLUTION: The tractor is structured so that a front axle case extending to the left and right is installed on a machine body frame and a front left wheel and a front right wheel are installed on the left and right side ends of the front axle case through a left and a right gear case, wherein the left and the right gear case are each formed from a stationary side case forming body installed on the side end of the front axle case and a rotary side case forming body installed on the stationary side case forming body rotatably round the axis stretching in the vertical direction through a knuckle arm 86, and the rotation restricting piece 97 is mounted protrusively on the stationary side case forming body while the piece with rotation restricted 98 is mounted on the knuckle arm 86, whereby the piece 98 is engaged with the piece 97 to restrict rotation of the rotary side case forming body 89 generated through the knuckle arm 86. COPYRIGHT: (C)2006,JPO&NCIPI
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