| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve effective use of a travel speed up to a high speed travel of an on-road speed from low speed travel of a work speed, and also to improve operability. <P>SOLUTION: This working vehicle transmits rotational power of an engine E to driving wheels 2F and 2R via a hydraulic mechanical continuously variable transmission 1 composed of a hydrostatic continuously variable transmission part 1a and a planetary gear mechanism part 1b and a gear type transmission 9 having a plurality of stages of shift positions, and has an HST mode of traveling by using the hydrostatic continuously variable transmission part 1a and an HMT mode of traveling by using both the hydrostatic continuously variable transmission part 1a and the planetary gear mechanism part 1b. The working vehicle is characterized by arranging a control means 10 for constituting the work speed when performing work for traveling in the HST mode by the hydrostatic continuously variable transmission part 1a, and increasing an output engine speed of the engine E in response to stepping operation of a shift pedal 5, and increasing a speed of the working vehicle by rotating a trunnion shaft 7 of the hydrostatic continuously variable transmission part 1a. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
