| 摘要 |
PROBLEM TO BE SOLVED: To travel a vehicle well even on a muddy ground using a front wheel of a rear wheel-driving system agricultural field planting vehicle. SOLUTION: A wheel is used as a front wheel of a rear wheel-driving system field plating vehicle A. The front wheel is formed to a spoke wheel 4 by projecting a plurality of spokes 2 around a bearing portion and providing an outer wheel portion 3 around these spokes 2. The bearing portion adopts a bearing structure such as a ball bearing and the spokes 2 are constituted by 3-6 spokes. An interval of the adjacent spokes is widely formed. The outer wheel portion 3 does not adopt a hollow tire and adopts a ground-contact wheel 6 with recessed and projecting teeth on the outer periphery thereof.
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