Assembly having a control device with racks for controlling the angular position of pivotally-mounted blades in a turbine engine

摘要

An assembly in a turbine engine for controlling plural toothed pivotally-mounted blades arranged in azimuth around the axis of the turbine engine and including an actuator ring controlling a position of the blades. Racks mounted on the ring present corresponding sets of teeth meshing with the set of teeth of a respective one of the blades to place it in a selected angular position, and they are held in the radial direction by radial positioning mechanism fastened to the blade. Each rack is mounted on the ring by plural guides spaced apart circumferentially around the ring, that connect together movements of the rack and of the ring in the circumferential direction, and that are configured to slide relative to the ring, for each guide in its own radial direction, and relative to the rack in a direction of movement that is substantially radial and specific to the rack.

主权项

1. An assembly comprising:
an actuator ring; a plurality of pivotally-mounted blades distributed in azimuth around a first axis; a control device controlling angular position of the plurality of pivotally-mounted blades by the actuator ring; each of the blades presenting a set of teeth; racks mounted on the ring; wherein each rack meshes with the set of teeth of one of the blades to place the blade in a selected angular position; each rack is held in the radial direction by radial positioning means fastened to the blade; each rack is mounted on the ring by a plurality of guides spaced around the circumference of the ring, linking movements of the rack in the circumferential direction to movements of the ring, and configured to slide firstly relative to the ring along the radial direction specific to each guide, and secondly relative to the rack along a movement direction that is substantially radial and specific to the rack.