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US 4,050,850 AGranted
Arrangement for locking parts into the rotor of a turbomachine
AssigneeBBC Brown, Boveri & Company, Limited
InventorWolfgang Beckershoff
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AssigneeBBC Brown, Boveri & Company, Limited
InventorWolfgang Beckershoff
Estimating the term…
Rotor parts, such as blades, are locked in axially extending slots in a rotor by locking members positioned in circumferentially extending slots extending between and intersecting the axially extending slots. The locking members are slidably positionable into the circumferentially extending slots and displaceable between a release position and a locking position where they hold the rotor parts within the axially extending slots. A retaining element is in operative association with the locking member for securing it in the locking position. The locking members have ridges which seat against corresponding ridges formed in the circumferentially extending slots for retaining the locking members within the slots. In the locking position, the locking elements form a closure for the opening through the rotor surface into the circumferentially extending slots so that a completely smooth surface is presented on the surface of the rotor.
An arrangement for locking parts in the rotor of a turbomachine comprising a rotor having first slots extending circumferentially around said rotor and second slots extending transversely across said first slots and spaced apart in the circumferential direction around said rotor so that said second slots extend generally in the axial direction of said rotor, rotor parts having roots thereon with each said rotor part having its roots fitted into one of said second slots so that the roots of said rotor part are spaced apart in the circumferential direction by the said first slots, and locking means positioned within said first slots and displaceable only in a plane transverse to said second slots and passing through said first slots for movement therein between a release position and a locking position, said locking means having outer end faces disposed in locking engagement with the surface of the roots of said rotor parts when in the locking position, said outer end faces of said locking means being displaced from locking engagement with said rotor parts when in the release position, and said locking means being incompressible along the direction of said first slots when in the locking position.
An arrangement for locking parts in the rotor of a turbomachine comprising a rotor having first slots extending circumferentially around said rotor and second slots extending transversely across said first slots and spaced apart in the circumferential direction around said rotor so that said second slots extend generally in the axial direction of said rotor, rotor parts having roots thereon with each said rotor part having its roots fitted into one of said second slots so that the roots of said rotor part are spaced apart in the circumferential direction by the said first slots, locking means positioned within said first slots and displaceable only in a plane transverse to said second slots and passing through said first slots for movement therein between a release position and a locking position with said locking means in the locking position being disposed in locking engagement with the surface of the roots of said rotor parts, and being incompressible in the direction of said first slots when in the locking position, and in the release position said locking means being displaced from locking engagement, said locking means comprising a locking assembly and a securing piece positioned within each said first slot and located therein between two adjacent said second slots, a retaining device displaceably carried by said locking assembly for retaining said locking means in said locking position, said locking assembly and said securing piece being aligned with each other in each said first slot so that at one end of the first slot said locking assembly can be positioned in contact with the root of the rotor part in the adjacent said second slot and at the other end of the first slots said securing piece can be positioned in contact with the root of the rotor part in the other adjacent said second slot, said locking assembly and said securing piece each having first end surfaces and second end surfaces extending transversely of the circumferential direction of the rotor, said first end surfaces facing one another and said second end surfaces facing the roots of said rotor parts in said second slots located at the opposite ends of the said first slot, said first end surfaces having corresponding steps arranged to fit together in the locking position, recesses arranged in the roots of said rotor parts to face into said first slots, projections on the second end surfaces of said locking assembly and securing piece arranged to be displaceably fitted into the recesses in said roots, and said first slots having a hammerhead shape in transverse section with inwardly directing ridges extending along the circumferentially extending edges of said first slots at the outer surface of said rotor.
Dependencies are inferred from the claim text.