Caterpillar Global Mining Europe Gmbh

Dr. Ing. H.c. F. Porsche Aktiengesellschaft

Voith Patent Gmbh

Bucyrus Europe Gmbh

Manfred Bäumler

Gerhard Merten

Manfred Ziegler

Jörg Wirtz

Karl-Heinz Schürer

Uwe Böker

Claudius Freisinger

Herbert Horst

An extraction device, particularly for mining, having two drive stations and a drive chain which extends between the sprockets thereof. So that hanging chain or chain wear to a conveyor chain, in the case of a conveyor device, or to a plow chain, in the case of a plow device, can be detected, magnetic sensor units for detecting at least one chain condition of the drive chain are provided, wherein each sensor unit includes a transmitter, which is formed by a static or dynamic magnetic field generator, and a detector field, which is provided with a plurality of magnetic field detectors, as a detector, the detector and the transmitter being arranged to the side of a passage for the run of the drive chain that is to be scanned. The invention also relates to a method for controlling an extraction device for preventing hanging chain.

Extraction device, particularly for mining, and method for controlling the extraction device

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Fellbach, Germany

Manfred Bäumler