THREE-ELEMENT TYPE FOLDABLE SUPPORT WITH FOLDING/ UNFOLDING DEVICE FOR TOWER TYPE CRANE

PROBLEM TO BE SOLVED: To make a support, which must hold a maximum height or given height in a work site, foldable within minimum external shape dimension or given transport external shape dimension. SOLUTION: A support 5 includes a lower support element 6 connected to a rotary chassis 3 of a crane,...

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Bibliographische Detailangaben
Hauptverfasser:	LAROCHE PAUL, AQUINO FRANCOIS
Format:	Patent
Sprache:	eng
Schlagworte:	CRANES HAULING HOISTING LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To make a support, which must hold a maximum height or given height in a work site, foldable within minimum external shape dimension or given transport external shape dimension. SOLUTION: A support 5 includes a lower support element 6 connected to a rotary chassis 3 of a crane, folding intermediate support element 7, and an upper support element 8 supporting a boom 13 of the crane. A folding/unfolding device of this support 5 includes at least one guide 23 connected to the rotary chassis 3 and the intermediate support element 7, cord 30 connecting the intermediate support element 7 to a king post of a boom 19, jack 27 set up between the rotary chassis 3 and the lower support element 6, and a drive means itself able to include a connecting rod assembly part 34 positioned in a level of the intermediate support element 7. The crane, during transport on a road, is folded.