TOWER CRANE RUNNING SUPPORT FRAME Russian patent published in 2007 - IPC B66C5/10 B66C9/00 

FIELD: mechanical engineering; tower cranes.

SUBSTANCE: proposed running support frame has central part with upper and lower sheets, support ring with holes in ring and upper sheet secured on upper sheet and connected by pivots and braces with central part of cantilever. Central part of frame is provided with cross box beams. Conical inserts are arranged between adjacent beams, being rigidly connected with beams. Stiffening ribs are vertical attached to each insert in its upper part over perimeter of frame. Each conical insert is rigidly connected with upper and lower sheets of central part of frame, each stiffening rib is arranged between holes of upper sheet, vertical walls of each beam and conical inserts are connected with upper and lower sheets, and central part of frame and cantilevers are provided with engaging stops.

EFFECT: increased strength of frame, reduced metal usage and labor input in manufacture.

5 cl, 9 dwg