Patent ID: 7258242
Filing Date: 2007-08-21
Classification: B66C

Abstract:
1. A mobile crane comprising: a mobile carrier; a superstructure rotatably coupled to the mobile carrier; a luffing boom connected to the superstructure, the luffing boom including a first boom section and a second boom section, the second boom section being kinematically coupled with said first boom section via a first piston-cylinder unit and being pivoted in a pivoting plane by means of said first piston-cylinder unit, wherein the first boom section comprises a main boom, and wherein said main boom includes at least one of a telescopic and a latticework boom for a mobile crane; and a self-sufficient hydraulic unit arranged either at a head of said first boom section or at the second boom section being kinematically coupled with the first boom section to supply hydraulic energy to at least the first piston cylinder, wherein said hydraulic unit is supported so that it may be rotated about at least one axis to maintain an essentially same pivotable position with respect to ground in any position of the luffing boom.