WORKING VEHICLE

PROBLEM TO BE SOLVED: To solve a problem of a working vehicle, that the stop of an engine may be caused, when loads on a working portion and resultingly loads on the engine are largely changed, because the travel velocity of a travel machine frame is reduced only by a prescribed ratio or a prescribed quantity by an automatic vehicle velocity control means. SOLUTION: An electric motor 170 is linked to the straight travel rotation shaft 105 of a straight travel HST type velocity change mechanism 35 through a link mechanism 171. A link arm 176 and a sector gear 174 constituting the link mechanism 171 are formed in a state capable of being rotated on a pivot 175 by the rotation driving of the electric motor 170 in a range of an initial position to the maximum reduction position. When the joining arm 176 and the sector gear 174 are rotated to the maximum reduction position, a straight travel detent rod 135 is return-rotated to a neutral position to rotate the straight travel rotation shaft 105 (rotation swash plate of the first hydraulic pump) to a neutral position. COPYRIGHT: (C)2008,JPO&INPIT