ASSEMBLY HAVING A DEVICE FOR CONTROLLING, BY MEANS OF RACKS, THE ANGULAR POSITION OF PIVOTING TURBINE ENGINE VANES

摘要

The invention relates to an assembly, in a turbine machine, for controlling a plurality of toothed pivoting blades (30), said assembly comprising an actuation gear (40) for controlling the position of the vanes. Racks (50), mounted on the gear, each have teeth engaged with the teeth of one of the vanes so as to place the latter in a selected angular position, said racks being kept in the radial direction by a radial positioning means (70) that is attached to the vane. Each rack is mounted onto the gear by means of a plurality of guides (62A, 62B) that are placed along the circumference of the gear, said guides linking the movements of the rack and the gear in the circumferential direction.