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Comparison of seat designs for underground mine haulage vehicles using the absorbed power and ISO 2631-1(1985)-based ACGIH threshold limit methods.

Authors
Mayton-AG; Amirouche-F; Jobes-CC
Source
Int J Heavy Vehicle Syst 2005 Jul; 12(3):225-238
NIOSHTIC No.
20030404
Abstract
Based on prior mine vehicle studies of operators' exposure to whole-body vibration, NIOSH researchers evaluated four seat designs on mine haulage vehicles with regard to roadway-induced jarring/jolting and operator comfort. Investigators collected objective and subjective data from vehicle operators on two existing and two NIOSH seat designs. This study included time and frequency response data using accelerometers and a data recorder, operator perceptions of jarring/jolting and discomfort levels using a linear visual analog scale, and data from a questionnaire developed for this study. Results from the analysis of subjective data show that operators generally favored the NIOSH-designed seats over the existing seats. The results of analyses from the absorbed power method and the threshold limit method, based on ISO 2631-1, support the premise that NIOSH seat designs are superior to the existing vehicle seat designs on both models of mine shuttle cars used in the study. The NIOSH seat designs, featuring viscoelastic foam padding, were more effective in reducing vibration energy for operators exposed to vehicle jarring/jolting. In this paper, the performances of the NIOSH and existing seat designs are compared relative to the operator's exposure to vehicle vibration (mainly jarring/jolting).
Keywords
Mining-industry; Ergonomics; Vibration; Mining-equipment; Injuries; Injury-prevention; Safety-research; Coal-mining; Underground-mining; Author Keywords: seat designs; whole body vibration; comfort analysis; absorbed power; mine operators; mine vehicles; National Institute for Occupational Safety and Health; NIOSH; viscoelastic foam
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
Publication Date
20050701
Document Type
Journal Article
Email Address
AMayton@cdc.gov
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Issue of Publication
3
ISSN
1744-232X
NIOSH Division
PRL
Source Name
International Journal of Heavy Vehicle Systems
State
PA; IL
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