AUTOMATED MOUNTING CRANE WITH SELF-FOLDING BOOM Russian patent published in 2000 - IPC

FIELD: materials handling equipment. SUBSTANCE: automated mounted crane with self-folding boom has mast foldable in two, with mast upper and lower parts being connected by hinge joint for turning around horizontal axis, or telescopic mast, and boom connected by hinge joint with mast top and made up of boom main member, being boom support, and first intermediate boom member of relatively small length, boom members being hinge connected in tandem at level of truss lower chord. First main member of boom which serves as boom support is made with reduced height in rear part. First intermediate member is provided with front rigid post secured from top. Boom has second main member which is made of reduced height in its front part and is connected directly to first intermediate member for folding the boom. EFFECT: provision of compactness when boom is folded down. 9 cl, 13 dwg