| 摘要 |
PROBLEM TO BE SOLVED: To remove an adverse effect in a vehicle maneuverability, which is caused by growing weight imbalance of vehicle for a conventional system, because of the position of the center of gravity for conventional vehicle being too far from that of a vehicle unit as a whole. SOLUTION: This system is equipped with a differencial gear case 24, to which a rotating driving power of a drive shaft 21 is transmitted through gears, a differencial gear system which distributes and transmitters the input driving power into the differencial gear case into a left and right axel 28, 29, a hydraulic motor 31 for supplying a relative rotating power between the left and the right axles whenever it needs, and a hydraulic pump 34 to rotate and drive the hydraulic motor. A spur gear 47 is formed in one body with the outer periphery of the differencial gear case, and the hydraulic pump and a flow path switching valve 35 are arranged parallely to the left and the right hand axles to connect the pump axle 49 with the spur gear 47 through an idle gear 49 and a driving gear 49a.
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