| 摘要 |
PURPOSE:To reduce the flattening of crops by the respective wheels as much as possible and to improve the work efficiency by elongating hydraulic cylinders on turning on a spin switch to draw right and left drag links and operate a normal-reverse rotation switching mechanism, whereby right and left wheels are driven to rotate in the opposite directions. CONSTITUTION:In case of turning a power agricultural machine, a spin switch is turned on to first elongate hydraulic cylinders 9, 21 and draw right and left drag links 8, 20, whereby right and left wheels 6, 18 are respectively turned inward. That is, the front portions of the right and left front wheels 6 and the rear portions of the right and left rear wheels 18 are turned and directed to the inside of the axle, so that the respective wheels 6, 18 are in contact with the same circumference D. A normal-reverse rotation switching mechanism 29 provided on a driving axle is operated by turning on a spin switch, whereby the right and left wheels 6, 18 of the driving axle are respectively driven to rotate in the opposite directions. Accordingly, the driving force is transmitted in the right or left turning direction to the driving wheels of the power agricultural machine and the driving wheels are spin-turned, with the substantially central portion of a car body as the center of turning. |
