Bauer Maschinen Gmbh

Tobias Siegmann

Roland Arthur Braun

The invention relates to a cable swivel for connecting a cable or a retainer to a component, in particular a Kelly bar, which is rotatable relative to the cable or the retainer, with a stationary first swivel part which can be fastened on the cable or the retainer, and a rotatable second swivel part which is supported in a rotatable and axially fixed manner on the stationary first swivel part and can be connected to the component. Furthermore, in the case of the invention provision is made in that the rotatable second swivel part is of sleeve-shaped design with an axial passage and in that on the stationary first swivel part a connecting pin is designed which at least partially extends axially along the passage of the rotatable second swivel part.

Cable swivel

The invention relates to a drill rod for transferring a torque comprising an elongate rod base body, along which runs at least one base line for a fluid and/or electric current and/or data, an upper suspension device for suspending the drill rod from a support element, a rotary bearing, which is arranged between the suspension device and the rod base body, wherein the rod base body is mounted rotatably relative to the suspension device about a rod longitudinal axis, and a rotary feedthrough, through which a line connection is formed between at least one feed line, which is fixed relative to the support element, and the at least one base line of the rotatably-mounted rod base body. The invention is characterized here in that the rotary bearing is arranged axially distanced from the rotary feedthrough, and in that the rotary bearing comprises an axial bearing which is arranged above or below the rotary feedthrough. The invention furthermore relates to a drilling apparatus comprising such a drill rod and to a method for retrofitting an existing Kelly bar arrangement.

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Pöttmes, Germany

Tobias Siegmann