Traversing hoists – Having means facilitating assembly or disassembly – Of traversing hoist from support
Patent
1985-05-22
1987-11-17
Nase, Jeffrey V.
Traversing hoists
Having means facilitating assembly or disassembly
Of traversing hoist from support
B66C 2326
Patent
active
047068256
ABSTRACT:
A portable folding bridge crane comprises a power unit having a folding tongue assembly for enabling the unit to be towed as a trailer by a vehicle, a crane rail assembly carrying a movable bridge crane thereon, a pair of support members pivotally connected to the unit and to an intermediate location of the rail assembly, first hydraulic actuators for pivoting the support members with respect to the unit to raise and lower the rail assembly, second hydraulic actuators for simultaneously pivoting the rail assembly with respect to the support members to maintain the rail assembly horizontal, and a pair of legs pivotally supported at the front of the rail assembly for movement between a stowed position at which the legs lie adjacent to the rail assembly and an operating position at which the legs are extended to engage the ground. Upon being erected, the rail assembly is supported by the front legs and by the support members connected to the power unit, and the tongue assembly is folded against the power unit to enable vehicles to be driven sideways beneath the rail assembly and the movable bridge crane to be employed for transferring loads to and from the vehicles.
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Harsco Corporation
Johnson R.
Nase Jeffrey V.
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