| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a travelling vehicle which can constantly accurately operate hydrostatic pressure type continuously variable transmission device, by performing operation of the hydrostatic pressure type continuously variable transmission device with electronic control mechanism not with a mechanical interlocking mechanism. <P>SOLUTION: The hydrostatic pressure type continuously variable transmission device 8 adjusts and outputs a rotating angle of power of an engine. The rotating angle of a trunnion shaft 8a of the hydrostatic pressure type continuously variable transmission device 8 is defined by a stroke length of a piston rod 6a with a hydraulic cylinder 6. When a pedal sensor 3s detects a neutral position in switching of a pedal depression position between an advance pedal 1a and a reverse pedal 1b, the trunnion shaft 8a is retained at the neutral position during a predetermined time, and the rotating angle of the trunnion shaft 8a is set to correspond to a position of the advance pedal 1a or the reverse pedal 1b detected by the pedal sensor 3s after the predetermined time, by performing a control. Even when step-in-change operation is quickly done between the advance pedal 1a and the reverse pedal 1b, large transmission shock is prevented to prevent a body of an operator from being shaken not to make the operator feel bad, and deterioration in durability of a mechanical component is prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT |
