Patent ID: 7516858

Claim:
A mobile crane comprising a telescopic boom assembly which includes one or more telescopic boom sections, said boom assembly being pivotably supported at a boom articulation section ( 5 ) to be luffed about a horizontal axis, further comprising a boom guying ( 15 ) which has at least one guy rope ( 18 ) said boom guying ( 15 ) having an inner end fixed in the region of said horizontal axis and an outer end connected adjacent a tip of the telescopic boom assembly or a collar of an innermost telescopic section thereof, wherein said boom guying is supported between its inner end and its outer end by a guying support ( 16 ) extending from said telescopic boom assembly ( 4 ) at a location between said horizontal axis and said telescopic boom assembly tip, and said guy rope ( 18 ) of said boom guying is fixed at an outer end to a bending moment jib ( 20 ) that projects from an upper side of the telescopic boom assembly ( 4 ) transversely to the longitudinal boom axis in the direction of luffing of said boom assembly, said bending moment jib ( 20 ) rigidly secured to said telescopic boom assembly at points spaced apart in the longitudinal direction of said telescopic boom assembly ( 4 ), wherein said at least one guy rope is connected to said bending moment jib ( 20 ) at a point spaced apart from said upper side of the boom assembly in the luffing direction thereof such that a tensile force of the guy rope ( 18 ) induces a bending moment in the crane boom via the bending moment jib ( 20 ) to counter bending moments generated by the telescopic boom assembly and a load thereon.