Patent ID: 7611021

Claim:
A crane vehicle having a base plate ( 16 ) fastenable to its undercarriage to receive ballast and two hoisting means ( 18 , 20 ) structured and arranged to be vertically fastened to a part of a the superstructure projecting outwardly in opposite direction to a boom, said hoisting means ( 18 , 20 ) having first load receiving points ( 22 ) structured and arranged to be moved into engagement with cut-outs ( 32 ) of connection rods ( 26 ) arranged at the base plate ( 16 ) and upwardly engage into matched recesses ( 24 ) in the connection rods ( 26 ), wherein both hoisting means comprise piston rods ( 20 ) which are extended beyond the first load receiving points ( 22 ) and provided at their extended ends with second load receiving points ( 28 ) which are structured and arranged to simultaneously engage into corresponding shape-matched recesses ( 30 ) of the connection rods ( 26 ) as said hoisting means ( 18 , 20 ) are upwardly drawn and substantially accept forces perpendicular to an axis of the hoisting means ( 18 , 20 ), such that said hoisting means ( 18 , 20 ) absorb torques in addition to forces, and with ballasting independent of position of center of gravity.