| 摘要 |
PROBLEM TO BE SOLVED: To improve the turning performance of a movable agricultural machine on a field butt, simplify the operation of the reciprocal traveling agricultural work, and improve the reliability of the steering operation. SOLUTION: A movable agricultural machine in which a differential mechanism 33 is built in a transmission case 22, and the straight traveling force is transmitted via a traveling continuously variable mechanism 25 to drive right and left traveling crawler drive wheels 34 in the same direction at the same speed, while the turning traveling force is transmitted to the differential mechanism via a turning hydraulic pump 26 and a hydraulic motor 27 to drive right and left traveling crawlers in the opposite direction at the same speed is provided with a link mechanism to adjust the outputs of the traveling continuous variable transmission mechanism, the turning hydraulic pump and the hydraulic motor according to the operation quantity of a steering wheel, continuously change the differential speed of the right and left traveling crawlers to make a shift to, a spin turn, and to connect the steering wheel to the traveling continuously variable transmission mechanism or the steering hydraulic motor. |
