Traveling crane and assembling/disassembling method thereof

Details Traveling crane and assembling/disassembling method thereof Traveling crane and assembling/disassembling method thereof

2007-11-09

2008-11-25

Brahan, Thomas J. (Department: 3654)

Traversing hoists

Having vertically swinging boom

Having means to swing boom vertically

C212S239000, C212S300000

Reexamination Certificate

active

07455187

ABSTRACT:
A traveling crane according to the present invention includes a hook hoisting guide sheave for guiding a hook hoisting rope from the top of a boom toward the end of a jib, and the hook hoisting guide sheave is arranged on the top of the boom in a state that the guide sheave can guide the hook hoisting rope along the upper surface of the boom by folding the rope toward an upper spreader placed at a position adjacent to a boom anchor during assembling/disassembling of the crane. Thereby, the upper spreader can be moved between the boom anchor and a far end of the boom without providing a guide sheave dedicated for moving the upper spreader. Pairs of support legs are downward provided on both sides and in front and in rear of the upper spreader and a roller is provided for each support leg, so that interference between the upper spreader during movement and obstacles on the boom upper surface can be prevented even in a horizontal movement system excellent in operating efficiency.

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