Lattice piece for use with drive, particularly power pack, for crane, particularly mobile crane, has four corner shafts and zero bars and diagonal bars connecting corner shafts

摘要

The lattice piece (1) has four corner shafts (11,13) and zero bars (15,16,17) and diagonal bars (18,19) connecting the corner shafts. An adjustment unit is provided to execute the folding movement. A drive is connected with the adjustment unit. The adjustment unit has a partially telescopic diagonal bar. The telescopic diagonal bar has a hydraulically driven hydraulic cylinder.