| 摘要 |
PROBLEM TO BE SOLVED: To constitute the subject structure so that automatic upward and downward drives of a working device are suitably carried out corresponding to differences in states of steering of front wheels depending on the difference of skill of driver in the lifting structure of the working device of a working vehicle equipped with an automatic lifting means for automatically driving the working device upward when the front wheels are steered from the position of a straight traveling. SOLUTION: This device for lifting the working device of a working vehicle is equipped with an automatic lifting means for driving the working device upward by a drive mechanism 7 when front wheels 1 are operated to steer in a predetermined angle to right or left from the side of a straight ahead position A. When the steering speed in operating the front wheels to steer in the left or right predetermined angle A1 from the straight ahead position A becomes high, the left or right predetermined angle A1 is changed to the side of the straight ahead position A and the automatic lifting means is brought to act earlier.
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