PROBLEM TO BE SOLVED: To provide a working vehicle, made so as not to become incapable of traveling by driving a rear wheel on the inside of turning only when the rear wheel on the outside of the turning slips, so as to be able to perform the turning smoothly even under a bad condition.SOLUTION: This working vehicle is configured to include a rear wheel rotation sensor (205) for detecting the number of rotations of the left and right rear wheels in a controlling part (163), and an intermittent On and Off-controlling mechanism (B1) sets the number of rotations of the rear wheel on the inside of the turning based on the number of rotations of the rear wheel on the outside of the turning, detected by the rear wheel rotation sensor by calculation with a prescribed calculating formula, but the calculation formula sets the set number of rotations as a smaller value than the number of the rotations of the rear wheel on the outside of the turning. The vehicle is constituted so that in the case that the detected number of rotations of the rear wheel on the inside of the turning is larger than the set number of the rotations, a side clutch on the inside of the turning is Off, and in the case that the detected number of rotations of the rear wheel on the inside of the turning is smaller than the set number of rotations, the side clutch on the inside of the turning is On.COPYRIGHT: (C)2011,JPO&INPIT【課題】本発明の課題は、旋回外側の後輪がスリップするようなときのみ旋回内側の後輪を駆動して走行不能に陥らないようにし、悪条件化でも旋回がスムースに行えるようにする。【解決手段】制御部(163)に左右の後輪の回転数を検出する後輪回転センサ(205)を設け、断続的入り切り制御機能(B1)は、後輪回転センサにより検出された旋回外側の後輪の回転数に基づいて旋回内側の後輪の設定回転数を所定の演算式にて演算して設定するが、演算式は設定回転数を前記旋回外側の後輪の回転数よりも小さい値に設定する。設定回転数よりも検出される旋回内側の後輪の回転数が大きいときは旋回内側のサドクラッチを切りにし、設定回転数よりも検出される旋回内側の後輪の回転数が小さいときは旋回内側のサイドクラッチを入にする構成とする。【選択図】 図6
