Protection and Troubleshooting of Coal Mine Electrical Cables - 4 Volume Set. Volume 1 - Shuttle Car Reel Test Unit.
NTIS: PB/235-639 Available for Reference At Bureau Libraries :102 pages
Severe whipping of shuttle car trailing cables occurs when the car stops suddenly or reverses direction. This causes cable damage and can seriously injure personnel near the cable. This report (contract h0122011) describes work to develop a reel control system that will reduce or eliminate whipping. Results of engineering effort show that the following conditions are primarily responsible for the whipping problem: poor quality hydraulic components, improper adjustment of the hydraulic system, and hydraulic circuit design inappropriate to the components selected. The reel test unit developed demonstrated two different types of hydraulic systems that do not cause whip. Either of the two systems will provide shuttle car reel operation (1) that is essentially whipfree and (2) with maximum cable forces much lower than those common with existing systems.
CP; Final Contract Report;
NTIS Accession No.
NTIS: PB/235-639; Available for Reference At Bureau Libraries