Slack and overload rope protection system. Open file report, 28 Mar 79-15 Jan 83

Technical Report · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6893680

Farley, H L; Fish, R B; Jeffcoat, R L; Hoadley, D L

This report describes the development of an electronic system that detects unsafe slack and overload conditions in underground mine hoist ropes. The slack and overload rope protection system (SORPS) includes a fail-safe load cell inserted between the rope and the conveyance, and an accelerometer mounted on the conveyance. Signals from these transducers are telemetered via a radio link to the hoist control room, where they are combined with drum speed and chair status in a microprocessor-based decision and display unit. Abnormally high external force levels are detected as discrepancies between rope tension and cage acceleration; conveyance weight is inferred continuously. Hazardous conditions are displayed to the hoist operator, along with general hoist status.

• Research Organization: Foster-Miller, Inc., Waltham, MA (USA)
• OSTI ID: 6893680
• Report Number(s): PB-84-143460
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
HOISTS
ROPES
SAFETY ENGINEERING
UNDERGROUND MINING
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ENGINEERING
EQUIPMENT
MATERIALS HANDLING EQUIPMENT
MINING
012000* - Coal
Lignite
& Peat- Mining