| 摘要 |
PURPOSE:To attain a larger number of vehicle speeds in an original necessary vehicle speed range, by providing a secondary speed changer and a creep speed changer at the output side of a primary speed changer. CONSTITUTION:A secondary speed changer 28 having a speed changing sections for a high, a medium and a low speeds, and a creep speed changer 71 having a creep speed changing section, which can be optionally connected to or disconnected from only the low speed changing section of the secondary speed changer and serves to attain a creep speed lower than that by the low speed changing section, are provided at the output side of a primary speed changer 16 for altering the speed of a rotation from an engine 1. As a result, a high, a medium and a low vehicle speeds appropriate to different kinds of work can be attained, a vehicle speed, which is attained by an auxiliary speed changer and cannot be easily discerned, is eliminated, and a larger number of vehicle speeds are attained in an original necessary vehicle speed range.
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