To provide a crawler traveling device of a semi-crawler type tractor which is capable of enhancing traveling performance on a wet paddy and a dry field.
A crawler frame 17 fitted to a vehicle body side is provided below a driving wheel 11 mounted on a drive shaft 9 projecting to right and left sides of the vehicle body. Front and rear driven wheels 19, 20 are arranged before and behind the crawler frame 17, and intermediate tracker rollers 26, etc. are arranged in its longitudinal intermediate part, and a crawler 16a is wound around the driving wheel 11, the front and rear driven wheels 19, 20, and the intermediate tracker rollers 26, etc. Height adjustment means 27, 28, 29, 30 for vertically adjusting the mounting positions of the front and rear driven wheels 19, 22 with respect to the crawler frame 17 are provided. The front and rear driven wheels 19, 22 are adjusted downwardly on the dry field to increase the ground contact area. On the other hand, the front and rear driven wheels 19, 22 are adjusted upwardly during a wet paddy work to form an upwardly inclined attack angle on front and rear parts of the crawler traveling device 16.
TAMADA TAKESHI
IKEDA MITSUHIKO
IMAI YUKINORI
| JP2003237618A | 2003-08-27 |
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