Tower crane with automatic folding and unfolding stanchion

A tower crane configured to fold and unfold between a working configuration and a transport configuration, the tower crane having a boom hinged in rotation relative to a mast about a main axis of rotation, the tower crane comprising:

• a rear retainer fastened to a frame supporting the mast and to a stanchion, the stanchion extending the boom rearwardly of the main axis of rotation and configured to be displaceable relative to the boom between a working position and a transport position,
• wherein the tower crane further includes a lifting cable connected to a winding device configured to exert a tension force on the lifting cable, the tension force applied on the stanchion by a return system configured to cooperate with the lifting cable, so as to cause a displacement of the stanchion from the working position to the transport position.