An extension yoke (1), a self-hoisting wind turbine crane (5) with such a yoke a method of using such a yoke are disclosed. The yoke comprises a frame structure comprising a lifting portion (2) and a load transfer portion (3), forming an obtuse angle with each other, and at least one crane attachment element (4) positioned between the load transfer portion and the lifting portion, said at least one crane attachment element being configured for establishing a pivot connection to a crane. The lifting portion comprised a load attachment element (2) and the load transfer portion comprise at least one load transfer element (33), said load transfer element being configured for transferring compressive force by pressing against a reception surface (52) of the crane and for moving in relation to the reception surface. The frame structure may comprise at least two substantially parallel longitudinal beams (12a, 12b), at least one cross-beam (13), and/or at least one stabilisation element (12), and the crane attachment element may comprise a pulley block reception element.
AN EXTENSION YOKE FOR SELF-HOISTING CRANE, A SELF-HOISTING WIND TURBINE CRANE WITH AN EXTENSION YOKE, AND USE OF AN EXTENSION YOKE
VERLÄNGERUNGSJOCH FÜR EINEN SELBSTHEBEKRAN, SELBSTHEBEWINDTURBINENKRAN MIT EINEM VERLÄNGERUNGSJOCH UND VERWENDUNG EINES VERLÄNGERUNGSJOCHS
CULASSE D'EXTENSION POUR GRUE À AUTO-LEVAGE, GRUE À TURBINE ÉOLIENNE À AUTO-LEVAGE DOTÉE D'UNE CULASSE D'EXTENSION, ET UTILISATION D'UNE CULASSE D'EXTENSION
2023-05-17
Patent
Electronic Resource
English
IPC: | B66C Krane , CRANES |
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