| 摘要 |
PURPOSE:To remove a malfunction, achieve safety, and facilitate the handling operation of a hand tractor by providing a shift arm and a lever that rotates the shift arm backward within the shifter rotation range. CONSTITUTION:When a speed change lever 3 is set to the advance or regression position, a shifter 4 section operates a shift arm 6 and sets a speed change transmission mechanism 5 to the advance or regression state. When an operation handle 2 is rotated to the front for a hand tractor and transferred, the speed change lever 3 is also transferred simultaneously and the shifter 4 engages with a lever 7. When the speed change lever 3 is set to the same advance position prior to the transfer, the shift arm 6 is operated in the backward direction before the transfer and the speed change transmission mechanism 5 is set to the regression position. When the speed change lever 3 is set to the regression position, the speed change transmission mechanism 5 is set to the advance state. And if the speed change lever 3 is set to the advance state even when the handle 2 is transferred, the hand tractor advances. |
