| 摘要 |
PROBLEM TO BE SOLVED: To suppress damaging of a working place by a rear wheel in a turning center side at the time of turning, when a ride-on type working vehicle intends to turn with a small turning radius by greatly steering a right or left front wheel to the right or left side, in the ride-on type working vehicle. SOLUTION: When the front wheel 1 is steered in a range between a straight-ahead position A0 and right and left first setting angles A1, a first transmission state wherein power is transmitted to the right and left rear wheels 2 is established. When the front wheel 1 is steered between the right and left first setting angle A1 and right and left second setting angle A2, an interrupting state wherein power to the rear wheel 2 in the turning center side is interrupted and the rear wheel 2 in the turning center side comes to be in a freely rotating state is established. When the front wheel 1 is steered in a range between the right and left second setting angles A2 and right and left steering limits A3, a second transmission state wherein power of lower speed than the power transmitted to the right and left rear wheels 2 in the first transmission state is transmitted to the rear wheel 2 in the turning center side, is established. COPYRIGHT: (C)2005,JPO&NCIPI
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