Patent ID: 7311489

Claim:
A device to mount a rotating implement to a crane arm, comprising: a rotator locatable between the crane arm and the implement that at one end is pivot-mounted to the implement for rotating the same relative to the crane arm and slewing around a first pivot axis and at the other end is mountable to the crane arm via a hinged link for slewing around a second pivot axis, a swivel coupling arranged on the rotator for supplying the working chambers of a drive for the rotator with a hydraulic medium; one or more connecting unions provided to one end of the said swivel coupling, said connecting unions being provided with hydraulic medium lines leading from the crane arm, wherein: the hinged link between the crane arm and the rotator is designed as an open joint defined by two hinged points located at a distance from each other along the joint axis of the second pivot axis, the connecting unions are arranged extending parallel to the first pivot axis and facing towards the second pivot axis, whereby the hydraulic medium lines connected to the connecting unions pass between said hinged points located at a distance from each other, the crane arm is of the extendable telescopic type comprising two telescopic boom-like parts mounted one inside the other, a guide for the lines is arrangable on the free end of the crane arm between which guide and the crane arm the lines are arrangable during the relative movement of the boom-like parts, and the guide comprises a rigid arm, one end of which is fastenable at the hinged link on the free end of the crane arm and which arm, locatable parallel with the outer section of the crane arm and a distance from its upper side, exhibits an inside to face the crane arm against which the lines are brought and fixed.