Lifting frame and methods of lifting prefabricated building modu

Details Lifting frame and methods of lifting prefabricated building modu Lifting frame and methods of lifting prefabricated building modu

1975-02-20

1976-05-25

Blunk, Evon C.

Handling: hand and hoist-line implements

Hoistline attached load supporting frame

294 81SF, B66C 110, E04G 2114

Patent

active

039588246

ABSTRACT:
A lifting frame is provided for use in lifting elongated room-size prefabricated building modules and other large, heavy and bulky elongated loads having asymmetrical or lopsided weight distributions in the direction of elongation. The lifting frame includes a pair of generally parallel, side-by-side, spaced apart elongated beams and a pair of cross-brace beams running at right angles to the elongated beams and located therebetween. The elongated beams are adapted to be releasably fastened to the upper portion of the building module or other load with the longer dimension of such beams running in the same general direction as the longer dimension of the building module or other load. The cross-brace beams are adapted to receive and laterally position the lower ends of the cables of a cable-type lifting sling. Structure is provided for releasably fastening the cross-brace beams to the elongated beams at selected ones of a series of different longitudinal locations along the elongated beams for enabling the centerline of lift to be longitudinally aligned with the center of gravity of the building module or other load with a minimum of tipping of the module or load during the lifting process. By using lifting sling cables of proper different lengths on the two sides of the lifting frame, the centerline of lift can also be brought into lateral alignment with the center of gravity for the case of a building module or load having an asymmetrical lateral weight distribution.

REFERENCES:
patent: 3210113 (1965-10-01), Tantlinger
patent: 3404911 (1968-10-01), Burnett
patent: 3501193 (1970-03-01), Gray
patent: 3596968 (1971-08-01), Holm
patent: 3596970 (1971-08-01), Levert et al.
patent: 3724157 (1973-04-01), Miram

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