SPEED CHANGING OPERATION MECHANISM IN MOBILE AGRICULTURAL MACHINE

摘要

PURPOSE:To make a speed changing operation very easy and smooth, by performing the operation of a change lever to move mainly on a staight line. CONSTITUTION:In a work which repeates forward and backward operation with a slow speed frequently, when a change lever 37 is moved to a forward/reverse guide track 36c, a sliding coupling 27 is engaged with a forward 1st speed change gear 7 or a back change gear 22 and traveling in a respective speed can be made, by moving a change lever 37 along this track 36c simply on a straight line between a forward 1st speed position L1 and a reverse position R. Further, if the speed is frequently changed over to forward slow speed and forward rapid speed, when the change lever 37 is moved to a guide track 36d, the sliding coupling 27 can be engaged with a forward 2nd speed change gear 21 or the forward 1st speed change gear 7 by moving the lever 37 along the track 36d between the forward 2nd position H and the forward 1st speed position L2 on a straight line.