| 摘要 |
PROBLEM TO BE SOLVED: To provide a travel gear enabling smooth turning and having simplified construction. SOLUTION: Side clutches 17R, 17L are provided in right-and-left symmetry for disconnecting power from the travel gear and right-and-left symmetrical planetary gear mechanisms are provided all over between right and left side clutch gears 18R, 18L, so that drive by a continuously variable transmission mechanism (HST) 9 is transmitted to the planetary gear mechanisms. The planetary gear mechanisms are integrally constructed to be detachable from a transmission device body.
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