Inverted kingpost crane

Details Inverted kingpost crane Inverted kingpost crane

1994-10-17

1996-01-30

Huppert, Michael S.

Traversing hoists

Having horizontally swinging boom or bridge

Having specific bearing structure

212223, B66C 2384

Patent

active

054874785

ABSTRACT:
An inverted kingpost crane is disclosed, the crane including an upperworks supporting a crane boom, the upperworks supported on a rotating kingpost, the kingpost supported in a sleeve, an upper radial bearing structure intermediate an upper section of the kingpost and the sleeve, a lower bearing structure comprising a thrust bearing and a radial bearing disposed intermediate a lower section of the kingpost and the sleeve. The upper bearing and the lower bearing structure are constructed of a relatively soft bearing material, the bearing material providing a sacrificial wearing surface between the rotating kingpost and the stationary sleeve.

REFERENCES:
patent: 2828872 (1958-04-01), Mangel
patent: 2998149 (1961-08-01), Bopp
patent: 4061230 (1977-12-01), Goss et al.
patent: 4184600 (1980-01-01), Goss et al.
patent: 4216870 (1980-08-01), Bonneson et al.
patent: 4354606 (1982-10-01), Morrow et al.
patent: 4511048 (1985-04-01), Volakakis et al.
patent: 4513869 (1985-04-01), Goudy
patent: 4688688 (1987-08-01), Volakakis et al.
patent: 5310067 (1994-05-01), Morrow
patent: 5328040 (1994-07-01), Morrow

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