Apparatus for unloading barges or vessels of shallow draught transporting bulk materials and installation using this apparatus

摘要

Apparatus for unloading boats, constituted by a gantry crane placed on the quayside 16 and on which is articulated, about a horizontal axis, a jib 22 whose end carries a bucket take-up wheel 26, and including means for modifying the height position of the take-up wheel, causing the jib to pivot about the said axis, and means for displacing the bucket wheel transversely with respect to the quayside over the entire width of the hold of the boat 34. In order to simplify and lighten the apparatus, the jib 22 is mounted on the gantry crane so as to be able to rotate about a vertical axis located above the quayside and the bucket wheel 26 is fastened obliquely at the end of the jib so that its median plane forms an angle alpha , alpha ' with the edge of the quayside when it is located close to the longitudinal edges 36, 36' of the hold and is parallel to the quayside in an intermediate position of the wheel 26a. IMAGE