DEVICE TO ADJUST ADJUSTABLE GUIDE VANES Russian patent published in 2015 - IPC F04D29/56 F01D17/16 

FIELD: machine building.

SUBSTANCE: device (3) to adjust adjustable guide vanes (10, 11) of a compressor in a gas turbine engine with an axial flow comprises a control rod (50) to adjust the angular position of the vanes (10, 11) and a rotating shaft (61) with which the control rod (50) is coupled pivotally. The first holder (70) and the second holder (72) each have the first end (73, 74) connected to the casing (2) of an axial-flow machine. The first connection element (80) is attached to the second end (75) of the first holder (70) and provides for adjustable positioning of the first end (62) of the shaft (61). The second connection element (81) is attached to the second end (76) of the second holder (72) and provides for adjustable positioning of the second end (63) of the shaft (61). The first (80) and the second connection elements (81) are spatially positioned in respect to each other only via the first stationary joint between the first end 973) of the first holder (70) with the casing (2) of the axial-flow machine and via the second stationary joint between the first end (74) of the second holder (72) with the casing (2) of the axial-flow machine. The first (80) and/or the second connection elements (81) are presented as a ball connection and a sliding pin connection.

EFFECT: simplified manufacturing and elimination of mechanical stresses from thermal expansion.

13 cl, 6 dwg