| 摘要 |
PURPOSE:To permit the work in the state where the ground height of a transmission case part increases, and the content with ridges and crops is difficult, by setting the outside diameter of a driving gear and the outside diameter of a differential gear case which are arranged in distribution, to a close value. CONSTITUTION:In order to permit the steering operation for a front wheel 1, a casted case part 11 is constituted of a case part 21 which has a longitudinally interlocked shaft 16 built-in and is fixed onto the flange part 12a of the first case part 12 and a swing-side case part 22 which is equipped with an axle 5 and onto which the case part 21 is connected in swingable ways around a longitudinal axis core P2 coaxial with the interlocking shaft 16. A differential gear part constituted of a pair of side gears 13a and 13b separately installed onto a differential gear case part 26 and a driving gear 13c and a drive pinion gear 13e are arranged in distribution on the right and left sides of the driving gear 13c, and the outside diameter of the gear 13c and that of the case 26 are set to a close value. |
