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Application of a Portable Device for Measuring Dragline Roller Circle Track Deviations and Roller Loadings.

Authors
Pallini-R; Rumbarger-J; Powell-D; Et Al
Source
For Reference Only At Bureau Libraries :54 pages
Link
NIOSHTIC No.
10003455
Abstract
The objective of this work was to develop and demonstrate an instrumentation system for measuring roller circle distortions and roller loads, and to develop methods for using elastomeric materials to reduce the loading on thrust rollers in walking draglines. A practical and portable device was developed and demonstrated on a walking dragline at the Falkirk Mine, Underwood, North Dakota. The device performed reliably and provided data on the vertical (out-of-flat) and angular twist or warp of each dragline roller track. This information can identify whether the upper rotating frame structure, the tub structure, or both are the source of distortions. The combined distortion data can be used to calculate realistic roller loads, predict track service life, and assist in evaluating the cost effectiveness of potential field repairs (elastomeric cushioning materials) versus costly track and tub replacement.
Publication Date
19820101
Document Type
CP; Final Contract Report;
Fiscal Year
1982
Identifying No.
OFR 72-84
NIOSH Division
SRC;
Source Name
For Reference Only At Bureau Libraries
State
ND;
Performing Organization
Franklin Institute
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division