DEVICE FOR ADJUSTING VARIABLE GUIDE VANES

摘要

According to the invention a device (3) for adjusting variable guide vanes (10, 11) of an axial-flow machine, comprises at least one control rod (50) for adjusting an angular position of the variable guide vanes (10, 11) and a rotatable shaft (61) to which the at least one control rod (50) is pivotably connected. Furthermore a first bracket (70) and a second bracket (72) are provided, each having a first end (73, 74) connectable to a casing (2) of the axial-flow machine. A first joint (80) and a second joint (81) are comprised, the first joint (80) fixed to a second end (75) of the first bracket (70) and providing adjustable positioning of a first end (62) of the shaft (61) and the second joint (81) fixed to a second end (76) of the second bracket (72) and providing adjustable positioning of a second end (63) of the shaft (61). The first joint (80) and the second joint (81) are spatially positioned to each other solely via a first fixed connection between the first end 73) of the first bracket (70) to the casing (2) of the axial-flow machine and via a second fixed connection between the first end (74) of the second bracket (72) to the casing (2) of the axial-flow machine. The first joint (80) and/or the second joint (81) is a ball-joint and a sliding pin-joint.