Boom section for telescopic crane boom

Details Boom section for telescopic crane boom Boom section for telescopic crane boom

1977-08-26

1978-09-12

Braun, Leslie

Static structures (e.g., buildings)

Machine or implement

52118, E04C 304, E04H 1234

Patent

active

041126491

ABSTRACT:
A large light-weight deflection-resistant telescopic boom section of hollow rectangular cross-section comprises spaced apart top and bottom plates and spaced apart vertical side plates welded therebetween inwardly of the side edges thereof. Longitudinal corner stiffeners of angular cross-section are welded between the outwardly extending portion of the top and bottom plates and the associated vertical side plate to shorten the effective height of the side plate, to stiffen the top and bottom plates, to increase the mechanical section properties, and to provide a flat built-in slide pad bearing surface. Vertical side stiffeners of U-shaped cross-section are welded to the vertical side plates at intervals therealong and to the longitudinal corner stiffeners to provide the buckling resistance and increased shear load capacity of side plates.

REFERENCES:
patent: 1345304 (1920-06-01), Zied
patent: 2125691 (1938-08-01), Ragsdale et al.
patent: 3708937 (1973-01-01), Sterner
patent: 3719403 (1973-03-01), Sung
patent: 3736710 (1973-06-01), Sterner
patent: 4003168 (1977-01-01), Brady
patent: 4045936 (1977-09-01), Sterner

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