| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a travel transmission structure for a working vehicle that prevents a work ground from being damaged by front wheels when the vehicle makes a turn, in the case that the vehicle is designed so that a two-rear-wheel drive state is obtained when the turn is initiated by turning the front wheels to the right or left during straight-ahead driving in a four-wheel drive state. Ž<P>SOLUTION: When a steering angle of a front wheel 1 falls between a straight-ahead position A1 and a right or left set angle A2, the four-wheel drive state is obtained, and when the steering angle of the front wheel 1 exceeds the right or left set angle A2 to approach a steering limit A3, the two-rear-wheel drive state is obtained. When a set time passes after the steering angle of the front wheel 1 exceeds the right or left set angle A2 to approach the straight-ahead position A1, the four-wheel drive state is obtained. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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