Crane boom in grid construction

摘要

The present invention relates to a crane boom (1) in a grid construction with at least two via a connection arrangement (4, 104) detachably connected to one another crane boom parts (2, 102; 3, 103) with a belt tubes (5, 105), on the respective ends (5e, 105e) at least on one side, the connecting arrangement (4, 104) is welded.In order to provide a crane boom, in which the connection arrangement between two jib parts, in particular bolts - or flange connections, can be produced more easily, it is proposed that the wall thickness (s) of the strap tube ends (5e, 105e) is greater than the wall thickness (s) of the tube to the belt ends (5e, 105e) adjoining central areas (5, 105m) of the belt tubes (5, 105) is.