| 摘要 |
PROBLEM TO BE SOLVED: To improve traveling performance in a four-wheel drive riding type work vehicle having freely steerable front and rear wheels on the right and left sides. SOLUTION: A front wheel supporting case 2 having freely steerable left and right front wheels is supported while prevented from being lifted/lowered or rolled. Around an axis center P2 in the lateral direction, left and right transmission cases 5 are supported freely oscillationally in the vertical direction independently of each other. The left and right transmission cases 5 are extended backward, and left and right rear wheels 6 are arranged in the back of the left and right transmission cases 5.
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