| 摘要 |
PROBLEM TO BE SOLVED: To provide a working vehicle provided with a crawler traveling device, which oscillates forward and backward by a simple and compact constitution, and supports the weight of a machine body by a part of the machine body. SOLUTION: In the tractor, a traveling machine body is supported by the front portion crawler traveling device 10 and the rear portion crawler traveling device disposed on the front and rear sides of the machine body. In the front portion crawler traveling device 10, a king pin case 20 is fixed to a center case 19, and an intermediate case 26 is connected to the king pin case 20 to be rotatable to right and left sides with a king pin 21 as a center. In the intermediate case 26, a supporting case 28 internally fitted in an axle 31 is integrally mounted, and a front sprocket 12 is mounted at an outer end of the axle 31. A holder 41 connected to a track frame is fitted in an outer peripheral portion of the supporting case 28 inside the machine body of the front sprocket 12. By oscillating the holder 41 forward and backward, the front portion crawler traveling device 10 is also oscillated forward and backward. COPYRIGHT: (C)2009,JPO&INPIT
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