The front wheel speed increasing control Suitsuchi mechanism in the tractor with a front wheel speed increasing mechanism

摘要

In (57) [summary] [purpose] during a steep angle of the U-turn, etc., at the time when the cut of the handle also return the handle also handle the operation is easy, yet the front wheel speed increasing mechanism capable of obtaining a steering of precise tractor to provide a front wheel speed increasing control switch mechanism in tractors equipped. [Configuration] to detect the before and after displacement of the tie rod 6a of the front wheel steering mechanism 6, the two front wheel speed increasing control switches 21 and 22 for turning on and off the control circuit 23 of the front wheel speed increasing mechanism 8, in the vicinity of the position of the tie rod 6a and disposed at intervals in the machine body 1 back and forth direction, the cutting start of the handle 5 to actuate one of the front-wheel speed increasing control switch earlier to turn the control circuit 23 of the front wheel speed increasing mechanism 8, the handle 5 the return to the beginning to constitute a front wheel speed increasing control switch mechanism 15 in order to actuate the other front wheel speed-up control switch earlier to turn off the control circuit 23 of the front wheel speed increasing mechanism 8.