| 摘要 |
PURPOSE:To restrain an inclining phenomenon of a vehicle body due to an unbalance of the weight of the vehicle body by providing a speed change means for producing a difference in drive speed between front and second wheels or between right front and rear wheels and left front and rear wheels. CONSTITUTION:Hydraulic pumps 6, 7 driven by the power of an engine 5, for driving front and rear wheels are connected respectively with hydraulic motors 8, 9 for the front and rear wheels, from which power is transmitted to rear the front wheels 1a, 1b and the rear wheels 2a, 2b through front and rear wheel differential gear mechanisms 10, 11. Further, there are provided control valves 16, 17 for hydraulic front and rear wheel steering cylinders 14, 15, a control valve 19 for controlling a hydraulic cylinder 18 adapted to elevate a toggle link mechanism 3, front wheel brakes 20a, 20b adapted to brake independently one of the left and right front wheels 1a, 1b, and rear wheel brakes 21a, 21b adapted to brake independently one of rear left and right wheels 2a, 2b. |
