Traversing hoists – Having means facilitating assembly or disassembly
Patent
1984-05-17
1985-04-30
Blix, Trygve M.
Traversing hoists
Having means facilitating assembly or disassembly
212239, 212247, 212253, 384453, B66C 2384
Patent
active
045138699
ABSTRACT:
A pedestal crane mounting system utilizes a spherical thrust bearing, for vertically supporting the crane gantry on the pedestal, and a spherical radial bearing, for eliminating radial loading on the thrust bearing. The upper race of the spherical thrust bearing and the outer race of the spherical radial bearing have common points of origin for the generatrices defining the race guide surfaces. The thrust and radial bearings are carried in a cartridge which mounts in a yoke connectable to a crane gantry by support pins at first and second points of attachment. Disposition of the bearing cartridge in the yoke is such that the centerline of the support pins coincides with the centerline of the spherical radial bearing. The bearing cartridge is fitted onto a vertical shaft fixed in the upper end of the pedestal. The crane gantry attached to the yoke is rotational with respect to the pedestal, and is rotationally driven by a crane slewing mechanism including a spur gear fixed to the upper end of the pedestal, and a drive mechanism mounted to the gantry, including a planetary gear arrangement for engaging the spur gear.
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Armco Inc.
Avila Stephen P.
Blix Trygve M.
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