| 摘要 |
PURPOSE:To prevent falling rear wheels into the trace of front ring tread without stability of the body, in a sulky rice-paddy tractor such as a rice-planting machinery. CONSTITUTION:A rice-paddy tractor 1 to trail a rice-planting machinery 2 is travelled by driving rear wheel 5 with an engine 6, installed right and left front wheels 4 and right and left rear wheels 5 to the body 3. In this case, the front wheels 4 and rear wheels 5 are arranged within width between the planting bodies 10, that is, the same planting lines, the front wheel with a width of W is positioned within a width of W of the rear wheel 5, additionally the tires 14 of front wheel 4 are arranged to the position which is off inward from the outer rim of rear wheel 5. Such the front wheels are positioned inside of width of rear wheel so that the lateral space of right and left front wheel can be increased, the stability of the body can be secured, it can be prevented to fall a ring of rear wheel into the trace of tread of front wheel ring. |
