Patent · US Active

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

US8550236B2 · kind B2 · utility

21Cited by

6References

28Claims

0Family size

Assignee

Caterpillar Global Mining Europe GmbH · DE

Inventors

Gerhard Merten · L Atkinson Lane, DE
Karl-Heinz Schurer · Herne, DE
Jorg Wirtz · Witten, DE
Manfred Bäumler · Fellbach, DE
Uwe Böker · Bad Marienberg, DE

Key dates

Filing date	Sep 8, 2008
Grant date	Oct 8, 2013
Priority date	—
Expiry date	Mar 14, 2030

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21F13/066
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.