| 摘要 |
PROBLEM TO BE SOLVED: To provide a sub transmission of a tractor capable of reducing the cost during the assembly and realizing a plurality of speed change modes by setting the diameter of a part of sub speed change gears to be equal to each other, or removing a part of members thereof. SOLUTION: In the sub transmission of the tractor, a pair of front and back gears 2 and 3 of the same diameter are disposed on a sub speed change shaft 1, a pair of front and back gears 5 and 6 of the same diameter are disposed on an intermediate shaft 4 parallel thereto. The gears 2 and 3 of the same diameter face and are engaged with the gears 5 and 6 of the same diameter in a three-stage speed-change manner, or the gears 2 and 3 of the same diameter are engaged with the gears 5 and 6 of the same diameter in a two-stage speed-change manner while any one of them is removed. COPYRIGHT: (C)2004,JPO&NCIPI
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