| 摘要 |
PURPOSE:To improve operability on a slope, a bad road, and the like by driving to rotate right and left driving wheels with a single drive motor respectively and commonly, and when a steering wheel is over a certain angle at turning, intercepting the clutch mechanism of the inside wheel and supplying drive force only to the outside wheel. CONSTITUTION:At turning left for example, by operating a steering wheel for left turning, a hydraulic cylinder 21 is moved, a turning pulley 19 is rotationally moved following to a chain 22, a rear axle is also turned, and a rear side steering wheel 3 is steered to move in the left turning condition. When the left turning operation is further progressed, the steering angle of the rear steering wheel 3 is increased, and a limit switch is pressed with a semicircular cam plate for detecting left steering to be in conductive condition. Hereby, an electromagnetic contact is in conductive condition, a rotor on the load side is excited to be in the condition of intercepting the clutch, a left front driving wheel 1 is in free condition, and turning is promoted by drive force of a right front wheel 2. Further, the left front driving wheel 1 is naturally rotated retreating as the steering angle is enlarged. |
