Structure for damping the oscillation of building cranes

Details Structure for damping the oscillation of building cranes Structure for damping the oscillation of building cranes

1978-08-22

1981-12-01

Blix, Trygve M.

Traversing hoists

With haul-in line

212196, 212225, 188378, 33344, B66C 1306

Patent

active

043031641

ABSTRACT:
An apparatus for inhibiting the oscillation of a vertical crane or similar structure with a horizontal main jib supporting a load hoist apparatus. The main jib has a counter jib which supports a counterweight mass by a linkage system. The linkage system permits the counterweight mass to swing through an arc so that it dampening the swinging movement of the crane. The linkage system also permits the counterweight mass to be vertically adjustable relative to the main jib so as to accommodate crane structure of different sizes.

REFERENCES:
patent: 3240353 (1966-03-01), Leavesley
patent: 3259212 (1966-06-01), Nishioka et al.
patent: 3533524 (1970-10-01), Wilcox
patent: 3536165 (1970-10-01), Desjardins
patent: 3642148 (1972-02-01), Durand
patent: 3851767 (1974-12-01), Durand

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