| 摘要 |
An arrangement for lubrication of a gear including a first gearwheel ( 402, 602, 702 ) in engagement with a second gearwheel ( 404 ), the teeth of the first gearwheel having an axial extent longer than the entire axial extent of the teeth of the second gearwheel. A first tooth surface of the first gearwheel is in engagement with the teeth of the second gearwheel. A second tooth surface of the first gearwheel ( 402, 602, 702 ) constitutes a part in a spline joint together with corresponding internal teeth of a gear element ( 423, 623, 723, 823 ). A lubricant duct ( 429, 629, 729, 829 ) is arranged so as to conduct lubricant to the first tooth surface. The lubricant duct ( 429, 629, 729, 829 ) consists of a space between a tooth tip and a corresponding tooth root in the spline joint. The gear element ( 423, 623, 723, 823 ) consists of a coupling ring. The first gearwheel ( 402, 602, 702 ) consists of a sun wheel. Both the coupling ring and the sun wheel form part of a range gearbox with planetary gear stages.
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