Righting itself sufficient crane with laterally in the transport position, together with folding boom

摘要

The crane is equipped with a jib foldable (6) is composed of at least three elements, an intermediate element (10) of folding the jib foot (7) with the second jib element (8) . The intermediate element (10) is composed of a rear part (15) and a front part (16), in the form of a pyramid with a rectangular base, respectively articulated (at 20, 30) at the foot of the arrow (7) and the second jib element (8), at the level of the lower chords (21, 31) . A hinge with a vertical axis (37) connects the rear parts (15) and (16), the axle (37) being offset laterally. Means are provided for joining the rear parts (15) and (16) in the working position of the foldable grue.application with cranes for their transport by road.