| 摘要 |
Disclosed is an apparatus including a stepless speed change device (20) receiving an engine drive; a planetary transmission device (P) for, by a plurality of planetary transmission mechanisms (P1, P2, P3), combining an output from the stepless speed change device (20) and the engine drive not subject to a speed change by the stepless speed change device(20); and a speed range setting device (C) for outputting the drive combined by the planetary transmission device (P) and divided into a plurality of speed ranges. An electric motor may be used instead of the stepless speed change device. The planetary transmission device (P), the speed range setting device (C) and a forward-reverse changeover device (B) are located forwardly of a rear end of an upstream transmission case portion (9b). An electric motor may be used instead of the stepless speed change device (20).
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