To solve the problem that operation for changing and adjusting a vehicle speed of a traveling machine body is hardly performed when a driver drives a working vehicle at standing attitude because a remain of a marker drawn on a field surface is not seen or is hardly seen, for example, from an operator sitting on a seat of a drive part in the working vehicle provided with a hydraulic continuously variable transmission 80 for shifting motive power from an engine 5 mounted on a traveling machine body 1; a shift pedal 18 for acceleration/deceleration-operating shift output of the hydraulic continuously variable transmission 80; and a steering wheel body 15 for steering/operating the traveling machine body 1.
A vehicle speed adjustment lever 23 capable of performing two kinds of operations of operation for accelerating/decelerating a shift output of a hydraulic continuously variable transmission 80 and operation for retaining the shift output to a value corresponding to a pedal position of a shift pedal 18 is arranged on a steering wheel body 15 or a neighborhood to it.
COPYRIGHT: (C)2008,JPO&INPIT
| JPH06206463A | 1994-07-26 | |||
| JPS5423439A | 1979-02-22 | |||
| JP2001082597A | 2001-03-27 | |||
| JPH10210816A | 1998-08-11 | |||
| JPH11313516A | 1999-11-16 |
Tadashi Higashino
Hiroyuki Nishi
Ryuichi Watanabe