| 摘要 |
The present invention relates to a sun-and-planet gearing (10) comprising a drive shaft (11) rotating due to the action of a blade or blades of a wind power plant, whereby the shaft (11) is coupled with a planet toothed frame of planet gears (14ai1, 14ai2 ...) i.e. a planet carrier (13) rotating along with the shaft (11). The planet gear (14ai1, 14ai2 ...) teeth (14') are in engagement with teeth (15') of a toothed rim (15) disposed in external stationary position, and with teeth (16') of a sun gear (16) disposed in the center. The invention is characterized in that both the teeth (14') of the planet gears (14ai1, 14ai2 ...) and teeth (15') of the toothed rim (15) as well as teeth (16') of the sun gear (16) are screw teeth. At the end of the sun gear (16) shaft (160) taking up axial movement of the shaft (160), there is an end flange (160a) the external face (fi1) of which is a thrust face with respect to the face (fi2) of a thrust end flange (40). At the shaft (160) end, there are teeth (17a) of a gear coupling (17) the other teeth (17b) of which are on internal face of a sleeve shaft (18) disposed outside the shaft (160). Driving power is transmitted from the shaft (160) via the gear coupling (17) to the sleeve shaft (18), and the gear coupling (17) is provided with straight teeth for axial movement of the shaft (160). Said sleeve shaft (18) is provided with a toothed wheel (19) for transfer of rotary motion via at least one intermediate toothed wheel to an output shaft (23), and further to a power generator for producing electric power. |
