초록 ▼

A rotor assembly including a spool and a plurality of radially extending rotor blades mounted in a groove provided circumferentially of the spool is described. The groove includes a pair of inwardly extending flanges which define a throat area narrower than the groove. A stacking hole extends radial

A rotor assembly including a spool and a plurality of radially extending rotor blades mounted in a groove provided circumferentially of the spool is described. The groove includes a pair of inwardly extending flanges which define a throat area narrower than the groove. A stacking hole extends radially and communicates with the groove to allow the rotor blade members to be individually mounted to the spool. The locking device for retaining the rotor blades in the spool includes a C-shaped spring adapted to urge against the roots of each rotor blade in the groove and a locking protrusion adapted to engage in the stacking hole and in an opening formed in the platforms of two adjacent blades straddling the stacking hole whereby the locking device abuts against the ends of the flanges in the stacking hole and retains the rotor blades against circumferential movement. A pair of anchor members can also be provided near the ends of the C-shaped spring member for engagement in the root of pairs of blades.

대표청구항 ▼

A rotor assembly comprising a spool, a circumferential groove defined in the spool and including a pair of inwardly extending flanges defining a throat narrower than the groove and providing a pair of continuous shoulder receiving seats co-extensive with the groove, a radially defined stacking hole

A rotor assembly comprising a spool, a circumferential groove defined in the spool and including a pair of inwardly extending flanges defining a throat narrower than the groove and providing a pair of continuous shoulder receiving seats co-extensive with the groove, a radially defined stacking hole communicating with said groove, a plurality of rotor blade members each having a root portion including a pair of shoulders adapted to mate with the shoulder receiving seats, the stacking hole being such as to allow the root of each blade to pass therethrough, said root portion only partially filling said groove in axial cross-section, and each root portion including a spring receiving seat having an axis extending in the circumferential direction when mounted in the groove, each blade member including a platform member spaced radially from the root and adapted to be seated on the exterior of the flanges, at least two of the blade platforms each defining a complemental opening such that when all of the blade members are assembled on the spool, the two blades having platforms defining complemental openings are arranged to provide an opening aligned radially with the stacking hole, and a locking member including a spring member in the form of a segment of a circle being adapted to, when installed in the groove, press radially outwardly against the spring seats provided on the roots and a locking protrusion provided on the spring member adapted to fit and be located in the opening provided in the two platforms and aligned with the stacking hole.