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.
GRUE À TOUR AVEC POINÇON À PLIAGE ET DÉPLIAGE AUTOMATIQUES
TOWER CRANE WITH AUTOMATIC FOLDING AND UNFOLDING STANCHION
TURMKRAN MIT AUTOMATISCH EIN- UND AUSKLAPPBAREM GEGENAUSLEGER
2023-10-11
Patent
Electronic Resource
French
IPC: | B66C Krane , CRANES |
Grue à tour avec poinçon à pliage et dépliage automatiques
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