| 摘要 |
According to the invention, the guiding device comprising adjustable guide vanes is provided with a drive for the adjustable guide vanes. Said drive comprises a cylindrical driving pin (6) and an adjustable lever (5) both of which are equipped with a pair of co-ordinated surfaces (62, 52) which, when in operation, slide onto each other when the guide vanes are adjusted. The adjusting ring (4) is displaced in order to adjust the guide vane, whereby the driving pin which is secured to the adjusting ring slides into a longitdudinal groove (51) of the adjusting lever and exerts a force upon said adjusting lever. As a result, an easy to mount, economical and robust construction is provided, resulting in a bearing surface having correspondingly low surface pressures and consequently greatly reduced wear and tear. |
