A crane with a pivotal boom. The crane has a first and a second main hoisting system, which main hoisting system are configured for independent operation. Each system comprises a hoisting cable, an upper sheave block, a hoisting block assembly suspended from the upper sheave block by the hoisting cable in a multiple fall configuration, and a hoisting winch. The upper sheave blocks of the first and second main hoisting systems are each independently pivotable about a common pivot axis relative to the boom. Each hoisting block assembly comprises a hoisting block body, multiple fixed sheaves that are fixed on the hoisting block body, and multiple disconnectable sheave members, each disconnectable sheave member comprising a frame and at least one sheave rotatably supported by the frame.
CRANE, VESSEL COMPRISING SUCH A CRANE, AND A METHOD FOR UP-ENDING AN ELONGATE STRUCTURE
KRAN, SCHIFF MIT EINEM SOLCHEN KRAN UND EINE VERFAHREN ZUR AUFRICHTEN EINER LÄNGLICHEN STRUKTUR
GRUE, NAVIRE COMPRENANT UNE TELLE GRUE ET PROCEDE POUR BASCULER UNE STRUCTURE ALLONGÉE
2024-02-14
Patent
Electronic Resource
English
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