Anti-sway system for a spreader suspended from a crane

Details Anti-sway system for a spreader suspended from a crane Anti-sway system for a spreader suspended from a crane

1974-03-11

1976-03-23

Spar, Robert J.

Traversing hoists

Overhead

Cable

254144, 212126, B66C 502

Patent

active

039455041

ABSTRACT:
An apparatus for arresting the pendulums and rotational sway motion of a suspended load relative to its lifting platform and utilizing a compensated reeving system. Rope drums are mounted on the ends of a shaft which is rotatably secured to a lifting spreader having a load attached thereto. Wire ropes are reelable from the rope drums and are secured at their ends to a feeder reel mounted on the lifting platform. Unreeling of the ropes from the drums due to sway of the load causes work to be done on a brake engaged with the shaft. The feeder reel gathers in and pays out the wire rope as the load is raised and lowered.

REFERENCES:
patent: 3081884 (1963-03-01), Minty
patent: 3179259 (1965-04-01), McLean
patent: 3476263 (1969-11-01), Komatsu et al.
patent: 3532324 (1970-10-01), Crittenden
patent: 3746182 (1973-07-01), Tax et al.

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