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Mining Publication: Analysis of a Mechanism Suspension to Reduce Noise from Horizontal Vibrating Screens
Keywords: Noise Noise and vibration control Processing plants Sound level Sound power level
Original creation date: November 2011
Authors: DS Yantek, MJ Lowe
Peer Reviewed Journal Article - November 2011
Download PDF Document (0.59 MB)
NIOSHTIC2 Number: 20040108
Noise Control Eng J 2011 Nov-Dec; 59(6):568-580
A-weighted sound levels around vibrating screens in coal preparation plants often exceed 90 dB. The National Institute for Occupational Safety and Health (NIOSH) is developing noise controls to reduce noise generated by horizontal vibrating screens. Horizontal vibrating screen noise is dominated by sound radiated from the screen body. NIOSH researchers analyzed a mechanism suspension system that could reduce screen body-radiated noise. A finite element (FE) model of the entire screen was used to analyze the screen with the added mechanism suspension. The spring rates for the mechanism suspension were tuned to transmit vibration at the mechanism operating speed while attenuating vibration transmitted from the mechanisms to the screen body at frequencies above 100 Hz. The FE results were used to estimate the A-weighted sound power level radiated by the screen sides and feedbox for various mechanism suspension spring rates. The results indicate that a tuned mechanism suspension could reduce the A-weighted sound power level radiated by the screen body due to gear and bearing forces inside the mechanisms by 7 to 18 dB.
Image of publication Analysis of a Mechanism Suspension to Reduce Noise from Horizontal Vibrating ScreensPeer Reviewed Journal Article - November 2011
Download PDF Document (0.59 MB)
NIOSHTIC2 Number: 20040108
Noise Control Eng J 2011 Nov-Dec; 59(6):568-580
See Also
Determination of Sound Exposures (DOSES): Software Manual and Implementation Guide
Noise and Vibration Reduction of a Vibrating Screen
A Noise Control for A Roof Bolting Machine: Collapsible Drill Steel Enclosure
Noise Controls for Vibrating Screen Mechanisms
Practical Application of a Partial Cab to Reduce the A-Weighted Sound Level at the Operator's Station on Surface Drill Rigs
Results of Noise Measurements from Underground Testing of a Roof Bolting Machine Duty Cycle
Structural Vibration as a Noise Source on Vibrating Screens
A Technique for Estimating the Sound Power Level Radiated by Pneumatic Rock Drills and the Evaluation of a CSIR Prototype Rock Drill with Engineering Noise Controls
Technology News 536 - NIOSH Develops New Software to Analyze and Reduce Noise Exposure
Water Well Safety Bits: Health And Safety Information For The Water Well Industry
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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