Apparatus and device for automatically inserting and removing sc

Details Apparatus and device for automatically inserting and removing sc Apparatus and device for automatically inserting and removing sc

1992-12-16

1993-12-21

Smith, James G.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5738, 81 55, B25B 2900

Patent

active

052712974

ABSTRACT:
Apparatus employs a device for automatically threading and unthreading studs into tapped bores of a pressure vessel containing nuclear fuel to detach or fit a cover thereto. The apparatus also employs a device with a carrier ring supporting piston and cylinder units for tensioning the studs while nuts are fitted thereon. The stud threading device is supported on a carriage displaceable along a circular track to access each stud in turn. The stud threading device has a drive member, such as a tube or rod, which is driven by a rotary drive as well as a reciprocating drive. At the lower end the drive member has a coupler which fits onto a coupler at the upper end of each stud. The couplers on the studs take the form of bayonette-type fittings with U-shaped grooves for receiving locking projections on the coupler of the drive member to establish a connection resistant to tension and relative rotation.

REFERENCES:
patent: 4120218 (1978-10-01), Togel et al.
patent: 4380181 (1983-04-01), Bunyan
patent: 4581956 (1986-04-01), Robert

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