| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive control system for a work vehicle which can properly solve a slip (improve a slip rate) even if the work vehicle is inclined.SOLUTION: A drive control system for a work vehicle includes a four-wheel drive electromagnetic valve 34 that switches between a four-wheel drive state and a two-wheel drive state of a tractor 1, slip rate detection means that detects a slip rate S of a wheel relative to a ground contact area, an inclination sensor 28 that detects an inclination angle &thetas; of the tractor 1 in front and rear direction, and a vehicle ECU 44. If the slip rate S exceeds a threshold St while the inclination angle &thetas; is detected, the ECU 44 automatically switches the tractor 1 to the four-wheel drive state, and in a state where the tractor 1 is automatically switched to the four-wheel drive state, if the slip rate S decreases and the inclination angle &thetas; also decreases, the ECU 44 automatically switches the tractor 1 to the two-wheel drive state. |
