Adjustable service platform apparatus for a gantry crane

Details Adjustable service platform apparatus for a gantry crane Adjustable service platform apparatus for a gantry crane

1984-02-07

1985-10-15

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Horizontal traversing - actuation, control, or response

182 37, 182 625, 182 69, 182142, E04G 310

Patent

active

045468524

ABSTRACT:
An adjustable service platform apparatus for a gantry crane has an elongated base frame generally comforming in size and shape to a conventional load carrying lifting spreader, and twin service platform units secured to opposite lateral ends of the base frame. Work platforms atop the service platform units can be raised and lowered and laterally extended and retracted independently from the hoist and trolley motions of the crane, with the crane's hoist and trolley motions being interlocked with the position of the work platforms. Using work platform controls operators standing on the work platforms can readily access and inspect the structural elements of the crane's A-frame supporting structure and the crane's boom structure from the top of the boom to the base of the crane. The work platforms can additionally have inboard and outboard extensions for readily accessing the interior of the boom structure and the outside surfaces of the A-frame structure.

REFERENCES:
patent: 748962 (1904-01-01), Lewis
patent: 803717 (1905-11-01), Schwarz
patent: 2067344 (1937-01-01), Ringe
patent: 3302976 (1967-02-01), Grant
patent: 3454133 (1969-07-01), Gregord
patent: 3814211 (1974-06-01), Pamer
patent: 3817346 (1974-06-01), Wehmeyer
patent: 3820631 (1974-06-01), King

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