A tower crane configured to fold and unfold between a working configuration and a transport configuration includes a boom hinged in rotation relative to a mast about a main axis of rotation. The tower crane includes a rear retainer fastened to a frame supporting the mast and to a stanchion. The stanchion extends the boom rearwardly of the main axis of rotation and is displaceable relative to the boom between a working position and a transport position. The tower crane further includes a lifting cable connected to a winding device exerting, on the lifting cable, a tension force applied on stanchion by a return system configured to cooperate with the lifting cable, so as to cause displacement of said stanchion from the working position to the transport position.
Tower crane with automatic folding and unfolding stanchion
23.08.2022
Patent
Elektronische Ressource
Englisch
IPC: | B66C Krane , CRANES |
TOWER CRANE WITH AUTOMATIC FOLDING AND UNFOLDING STANCHION
Europäisches Patentamt | 2021
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