| 摘要 |
PURPOSE:To reduce the quantity of front wheel steering operation in the case where unevenness of paddy field is sharp and a rice paddy field working machine does not advance in a desired direction unless front wheels are steered and operated frequently. CONSTITUTION:A rice paddy field working machine is provided with a detection means which detects the frequency of steering operation which changes the direction of advance of the machine. When the frequency of steering operation per unit time exceeds the set value, a speed change gear 14 for traveling is set on the low speed side automatically for deceleration. |
