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Instrumented Pick Detects Coal/Rock InterfaceInstrumented pick installed on cutting drum of coal shearer for longwall mining measures cutting force with strain-gage-bridge load cell. Force signal transmitted to remote recorder. Transmitter located in base of pick assembly. Antenna located in shadow of rotating pick. Changes in characteristics of force signals from pick used to determine whether pick is cutting coal or rock.
Document ID
19830000065
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Wu, T. (General Electric Co.)
Erkes, J. W. (General Electric Co.)
Date Acquired
August 11, 2013
Publication Date
August 1, 1983
Publication Information
Publication: NASA Tech Briefs
Volume: 7
Issue: 3
ISSN: 0145-319X
Subject Category
Mechanics
Report/Patent Number
MFS-25753
Accession Number
83B10065
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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