ROTATION CONTROL DEVICE FOR WORKING VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a rotation control device for a working vehicle capable of performing rotation operation with good operation feeling even if a rotation radius instructed by a rotation instruction means is rapidly changed. SOLUTION: The rotation control device for the working vehicle is provided with a driving means provided with a transmission 100 for linear advancement and a continuous variable transmission 8 for rotation and driving a pair of left and right traveling devices; a transmission operation means 16 for transmission-operating the continuous variable transmission 8 for rotation; a rotation instruction means 56 capable of instructing size of the rotation radius; and a control means H for controlling operation of the transmission operation means 16. The control means H operates the transmission operation means 16 such that a speed ratio is made to the final target speed ratio corresponding to the size of the rotation radius instructed by the rotation instruction means 56 in the form that a variation amount per unit time of the speed ratio of rotation speed of the pair of left and right traveling devices is restricted to a restriction amount or lower in the rotation state. COPYRIGHT: (C)2006,JPO&NCIPI