Traversing hoists – Having means facilitating assembly or disassembly – Of boom sections
Patent
1997-05-28
2000-10-17
Brahan, Thomas J.
Traversing hoists
Having means facilitating assembly or disassembly
Of boom sections
212300, B66C 2370
Patent
active
061317500
ABSTRACT:
A connecting system for aligning the fly lug of a strut on a boom extension for connection to the boom head shaft of a crane boom. The apparatus includes an offset jack screw extending through a threaded aperture in the boom head shaft parallel to the strut of the boom extension and a laterally extending tab affixed to the fly lug. The jack screw has a swivel pad at the head that contacts the tab. Manual adjustment to the jack screw is operative to move the lug so that a hole for a pin aligns with a mating hole in the head shaft. The face portion of the swivel pad universally mates with the operative face of the tab that extends at a 10.degree.-15.degree. angle normal to the axis of the strut to cancel the induced turning moment caused by the offset of said jack screw.
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Brahan Thomas J.
Link-Belt Construction Equipment Co
Sumitomo Construction Machinery
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