Patent ID: 7721857

Claim:
A swing damping arrangement, particularly an arrangement pertaining to a swing damper ( 1 ) for supporting a tool ( 5 ) or working implement that hangs from a crane arm ( 2 ), wherein the damper ( 1 ) includes an upper part ( 11 ) connected to the crane arm ( 2 ), and a lower part ( 12 ) which supports a tool ( 5 ) or working implement, either directly or via a rotator ( 4 ) for instance, wherein the upper part ( 11 ) and the lower part ( 12 ) are pivotally connected to each other via a pivot joint ( 13 ), and wherein the damper ( 1 ) includes a brake arrangement ( 50 ), characterised in that the brake arrangement ( 50 ) includes a brake unit ( 60 ) having discs ( 70 , 80 ) that can swing around the pivot axle ( 14 ) of the pivot joint ( 13 ), in that at least one ( 70 ) of said discs is secured against rotation relative to the upper part ( 11 ), in that at least one ( 80 ) of said discs is secured against rotation relative to said lower part ( 12 ), in that the arrangement includes a tensioning element ( 90 ; 110 ; 130 ) which functions to press the discs ( 70 , 80 ) together in a braking operation, and in that the tensioning element ( 90 ; 110 ; 130 ) is located at least partially within one or two pivot bearings ( 46 ) located between the upper part ( 11 ) and the lower part ( 12 ).