Method of guiding a blade having a variable pitch angle
AssigneeSnecma Moteurs
InventorsPierre Debeneix, Alain Bromann, Francois Buffenoir
Life of this patent
Estimating the term…
Abstract
A guide device for guiding a variable-pitch blade, in particular in a turbomachine compressor, the blade having a pivot formed by a cylindrical axial shank mounted in a cylindrical housing of a casing and pivotally guided about an axis in said housing by bearings, where the bearings are abutment bearings with conical rollers, the axes of the rollers being substantially perpendicular to the pivot axis of the blade.
Claims21
A guide device for guiding a variable-pitch blade, in particular in a turbomachine compressor, the blade having a pivot formed by a cylindrical axial shank mounted in a cylindrical housing of a casing and pivotally guided about an axis in said housing by bearings, wherein said bearings are abutment bearings with conical rollers, the rollers having rotation axes which are substantially perpendicular to the pivot axis of the blade, each roller abutment bearing comprises two annular rings with the rollers housed between them, each ring being in a plane substantially perpendicular to the pivot axis of the blade, and a first abutment bearing bears via one of its rings against one end of the blade and via its other ring against a shoulder in the housing in the casing, and the other roller abutment bearing has one of its rings bearing against a shoulder in the housing in the casing, and has its other ring bearing against a clamping nut screwed onto the axial shank of the blade.
A guide device for guiding a variable-pitch blade comprising:
- a blade having a pivot formed by a cylindrical axial shank mounted in a cylindrical housing of a casing;
- and
- bearings configured to pivotally guide the blade about a pivot axis in said housing, said bearings being abutment bearings with conical rollers, the rollers having rotation axes which are substantially perpendicular to the pivot axis of the blade,
- wherein each roller abutment bearing comprises two annular rings with the rollers housed between them, each ring being in a plane substantially perpendicular to the pivot axis of the blade, and a first abutment bearing bears via one of its rings against one end of the blade and via its other ring against a shoulder in the housing in the casing, and the other roller abutment bearing has one of its rings bearing against a shoulder in the housing in the casing, and has its other ring bearing against a clamping nut screwed onto the axial shank of the blade.
Dependencies are inferred from the claim text.