Improvement in the radial locking of an adjustable orientation blade pivot for a turbomachine fan hub

摘要

Improvement in the radial locking of an adjustable orientation blade pivot for a turbomachine fan hub The invention relates to a blade pivot (2) with adjustable orientation for a turbomachine fan hub, comprising a stud (4) having retaining means (10) for a fan blade root and means of coupling for the transmission of a torque, a rolling bearing (14) for taking up centrifugal forces having an internal ring (16) mounted transversely against an outer radial part of the stud, a radial retention ring (24) of the stud relative to the rolling bearing housed in an annular groove (22) formed in the stud, a plurality of clamping pieces (26) each mounted in transverse bearing against the retention ring and in radial bearing against the inner ring of the rolling bearing, and a clamping nut (28) screwed onto an external thread (30) of the stud to bear conically against the clamping pieces so that said clamping pieces ensure tightening of the internal ring of the rolling bearing on the stud and a s wandering of the retention ring in the throat. Figure for the abstract: Fig. 1.