TELESCOPIC CRANE JIB PART WITH CROSS-SECTIONAL SEGMENTS OF LESS AND MORE PRONOUNCED CURVATURE IN THE TOP PROFILED PART AND IN THE BOTTOMPROFILED PART

摘要

The invention relates to a telescopic crane jib part (1) with a top profiled part (10) and a bottom profiled part (20) comprising curved cross-sectional portions (12 t o 19; 22 to 28), and the top profiled part (10) and the bottom profiled part (20) on a side of the cross-section, which is symmetrical with respect to the vertical mid-plane (3), each comprise, starting from the joining point (2) of the profiled parts (10, 20) , a less pronounced outwardly curved segment (14, 24) and a more pronounced outwardly curved segment (16, 26), and the mutually adjoining end segments (12, 22; 14 , 24) at the joining point (2) extend outwards at an angle.