A seal plate system (24) for a rotor in a turbine engine. The rotor includes a rotor disc (10) for supporting a plurality of blades (16), and an annular groove (32) provided in the disc (10) adjacent at least one end (30) of the disc (10). A plurality of plate structures (60) are provided supported
A seal plate system (24) for a rotor in a turbine engine. The rotor includes a rotor disc (10) for supporting a plurality of blades (16), and an annular groove (32) provided in the disc (10) adjacent at least one end (30) of the disc (10). A plurality of plate structures (60) are provided supported between the annular groove (32) of the disc (10) and a groove (56) formed in a platform (26) of the blade (16) adjacent an end (30) of the disc (10). The plate structure (60) includes a plate (64) and an elongated resilient locking pointer (66) extending from the plate (64) for engaging in a lock notch (98) formed in an outer wall (38) of the annular groove (32). The locking pointer (66) forms a self-locking feature that is biased into the lock notch (98) as the plate structure (60) is moved into position on the disc (10).
대표청구항▼
What is claimed is: 1. In a rotor for a turbine engine, said rotor including at least one rotor disc with blade mounting sections provided in the periphery of the rotor disc for receiving and mounting blades, the improvement comprising: an annular, continuous groove provided in said disc adjacent a
What is claimed is: 1. In a rotor for a turbine engine, said rotor including at least one rotor disc with blade mounting sections provided in the periphery of the rotor disc for receiving and mounting blades, the improvement comprising: an annular, continuous groove provided in said disc adjacent at least one end of said blade mounting sections; blade platforms having grooves in radial alignment with said annular groove; a plurality of plate structures adapted to be disposed and supported between said disc and said blades, and including opposing inner and outer edges located in said grooves to form an annular array of said plate structures; a plurality of lock notches formed in an outer wall of said annular groove; and said plate structures comprising a plate and an elongated locking pointer having an outer end supported on said plate at a location between said outer wall and said blade platform, and said locking pointer extending radically inwardly toward said outer wall, and said locking pointer extending axially away from said plate toward said outer wall and having a distal end which does not extend beyond said inner edge and which is engaged within a respective lock notch to maintain a circumferential position of said plate structures relative to said disc. 2. The structure of claim 1, wherein said locking pointer comprises an elongated resilient member, said locking pointer being resiliently biased toward said outer wall to engage within said lock notch. 3. The structure of claim 2, wherein said elongated resilient member extends through said plate for supporting said locking pointer on said plate. 4. The structure of claim 2, wherein said lock notches extend radically into said outer wall. 5. The structure of claim 1 wherein said disc includes a ledge portion extending from an inner wall of said annular groove opposite from said outer wall, and said plates of said plate structures include a foot portion for engaging said ledge portion. 6. The structure of claim 5, wherein said ledge portion comprises an inclined surface, inclined radically outwardly, and said foot portion comprises an inclined surface engaged with said inclined surface of said ledge portion. 7. The structure of claim 5, wherein said ledge portion is defined by lugs separated by slots, and said foot portion comprises lugs sized to fit through said slots between said lugs of said ledge portion. 8. The structure of claim 5, including an intermediate wall between said inner and outer walls, and a shelf extending in said annular groove between said outer and intermediate walls, said intermediate wall located radically inwardly from said lock notches. 9. The structure of claim 8, wherein said plate structures are movable circumferentially to align said locking pointers with said lock notches, and said locking pointers slide along a portion of said annular groove adjacent said shelf and are biased toward engagement with said outer wall during said circumferential movement. 10. In a rotor for a turbine engine, said rotor including at least one rotor disc with axially extending peripheral recesses provided in the periphery of the rotor disc for receiving root portions of blades, the improvement comprising: an annular, continuous groove provided in said disc adjacent at least one end of said peripheral recesses, said disc including a ledge portion extending from an inner wall of said annular groove and partially closing said annular groove to form a relatively narrow entrance portion thereto; blade platforms having grooves in radial alignment with said annular groove; a plurality of plate structures adapted to be disposed and supported between said disc and said blades, and including opposing inner and outer edges located in said grooves to form an annular array of said plate structures; a plurality of lock notches formed in an outer wall of said annular groove; and said plate structures comprising a plate and an elongated locking pointer having an outer end supported on said plate at a location between said outer wall and said blade platform, and said locking pointer extending radically inwardly toward said outer wall, and said locking pointer extending axially away from said plate toward said outer wall and having a distal end which does not extend beyond said inner edge and which is engaged within a respective lock notch to maintain a circumferential position of said plate structures relative to said disc. 11. The structure of claim 10, wherein said locking pointer comprises an elongated resilient member, said locking pointer being resiliently biased toward said outer wall to engage within said lock notch. 12. The structure of claim 11, wherein said elongated resilient member extends through said plate for supporting said locking pointer on said plate. 13. The structure of claim 11, wherein said lock notches extend radically into said outer wall. 14. The structure of claim 11, wherein said plate structure may be disengaged from said disc by pressing said locking pointer toward said plate and moving said plate structure circumferentially relative to said disc. 15. The structure of claim 10, including a second annular continuous groove provided in said disc adjacent an opposite end of said peripheral recesses, said blade platforms having second grooves in radial alignment with said second annular groove, and a second plurality of plate structures adapted to be disposed and supported between said disc and said blades, and located in said second grooves to form a second annular array of said plate structures. 16. The structure of claim 15, wherein said annular arrays of plate structures function to limit axial movement of said blades relative to said peripheral recesses. 17. In a turbine engine comprising a rotor including at least one rotor disc with blade mounting sections provided in the periphery of the rotor disc for receiving and mounting blades, said disc including an annular groove adjacent at least one end of said blade mounting sections, a plurality of radically extending lock notches formed in an outer wall of said annular groove, and blade platforms having grooves in radial alignment with said annular groove, a plate structure comprising: a generally planar plate for extending between said disc and said blades, and including inner and outer edges for engagement in said grooves; an elongated locking pointer mounted on said plate at an attachment location, said locking pointer having an outer end supported between said inner and outer edges and including a distal end spaced from said attachment location radically inwardly toward said inner edge, and wherein said distal end does not extend beyond said inner edge; and said locking pointer extending radically inwardly from said attachment location and axially away from said plate toward said outer wall when said plate structure is mounted to said disc for positioning said distal end within one of said lock notches to maintain a circumferential position of said plate structure relative to said disc. 18. The structure of claim 17, wherein said locking pointer comprises a resilient elongated body member. 19. The structure of claim 18, wherein said attachment location comprises a slot through said plate and said elongated body member is threaded through said slot. 20. The structure of claim 17, wherein said inner edge includes a foot portion for engaging a ledge portion extending from said disc across a portion of said annular groove.
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