Automatic device for screwing and handling bolts

Details Automatic device for screwing and handling bolts Automatic device for screwing and handling bolts

1979-01-23

1981-05-12

Jones, Jr., James L.

Tools

Wrench, screwdriver, or driver therefor

Machine

81 5741, B25B 1350

Patent

active

042664519

ABSTRACT:
Apparatus for screwing, unscrewing, and handling large bolts such as stud bolts for the cover of the core tank of a nuclear reactor. A circular guide rail is positioned above the periphery of the core tank. A main chassis is suspended from and movable along the guide rail. The main chassis includes two vertical beams and a plurality of horizontal guide beams which extend over the core tank periphery toward the interior thereof. A secondary chassis includes a number of bars which cooperate with the guide beams to permit horizontal movement of the secondary chassis in a direction substantially perpendicular to the direction of movement of the main chassis. A screwing mechanism is vertically movable on the secondary chassis and includes a gripping device for gripping the screw and a jack for compensating for the weight of the screw. A second gripping device can be included for gripping a washer.

REFERENCES:
patent: 1447744 (1923-03-01), Wright
patent: 1478020 (1923-12-01), Butler
patent: 2582442 (1952-01-01), Lapp

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