| 摘要 |
PROBLEM TO BE SOLVED: To provide a travel transmission device capable of being softly turned without devastating a field. SOLUTION: This mobile agricultural machine is provided with a work part at the front part of a travel undercarriage 7. When the rotation of the output shaft of a hydrostatic continuously variable transmission HST is transmitted to a power extraction part A, the power speed-changed by the hydrostatic continuously variable transmission HST is transmitted to right and left travel axles 34R, 34L via steering clutches 1R, 1L and a differential device 3, and the rotation of the case 4 of the differential device 3 is barked by a hydraulically operated braking mechanism to change the rotation ratio of the right and left travel axles 34R, 34L.
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