| 摘要 |
The invention relates to a guide vane adjustment device for a turbomachine, for rotation about a radial guide vane axis of a plurality of guide vanes that are grouped to a vane ring. Said guide vane adjustment device comprises an input shaft (26) and a control ring (27) that transmits rotation of the input shaft (26) onto the guide vanes (21) in order to rotate said guide vanes. The input shaft (26) is directly coupled to one of the guide vanes (21) such that said guide vane can be directly rotated without interposition of the control ring (27), starting from the input shaft (26). The input shaft (26) or the guide vane (21) that can be directly driven by the input shaft (26) is coupled to the control ring (27) via a transmission lever (28) in an articulated manner. The input shaft (26) is indirectly coupled to the other guide vanes (21) such that the other guide vanes of the vane ring can be indirectly rotated with the interposition of the control ring (27), starting from the input shaft (26). The guide vanes (21) that can be indirectly driven by the input shat (26) are coupled to the control ring (27) via additional transmission levers (29) in an articulated manner, the control ring (27) being movable in the circumferential direction and in the axial direction. |
