Material or article handling – Well pipe or rod racking mechanism – With slope change
Patent
1981-03-09
1983-12-20
Spar, Robert J.
Material or article handling
Well pipe or rod racking mechanism
With slope change
166 775, 294 90, E21B 1906
Patent
active
044214472
ABSTRACT:
In a drilling apparatus for handling strings of drill pipe on a drilling rig which includes a lift member or travelling block positionable over a borehole and carrying a pair of bails or links supported from the lift member at their upper ends, and having open loops at their lower ends which serve to lift the elevators. A link powered control device is attached to the lifting member so that, on command, it will spread the links so that they can be removed from one elevator and will draw the links backwards, away from the borehole, for attachment to a second elevator. The invention comprises a setback platform mounted on the drilling floor with spaces on its surface for positioning a second elevator while a first elevator is positioned on the rotary table. Hydraulic or pneumatic cylinders are provided, for moving an elevator from the rotary table to the surface plate of the setback platform, and back to the rotary table. Troughs are provided that extend forwardly, on each side of the rotary table, so as to provide forward stops as the links are moved to center the open loops to the elevator over the borehole. Stops are also provided on the back, to limit the backward motion of the links so as to be positioned properly with reference to the second elevator on the setback platform.
REFERENCES:
patent: 3063509 (1962-11-01), Guier
patent: 3099323 (1963-07-01), Kelley
patent: 3267783 (1966-08-01), Kepes
patent: 3308970 (1967-03-01), Wilson et al.
patent: 3532229 (1970-10-01), Scaggs
patent: 3680412 (1972-08-01), Mayer et al.
patent: 3929235 (1975-12-01), Howard et al.
patent: 3941413 (1976-03-01), Johnson et al.
patent: 4108318 (1978-08-01), Rode et al.
patent: 4253219 (1981-03-01), Krasnov
Gudgel Howard S.
Guier William E.
Krizek Janice
Spar Robert J.
Zena Equipment, Inc.
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