Untersuchungen der akustischen Wirkung von Tragrollen zur zielgerichteten Lärmminderung an Gurtförderanlagen /
- 出版日期：2014.
- 语种：ger
- 出版者：Technische Universität Bergakademie,
- 页数：xiii, 190 pages :
- 出版地：Freiberg :
- 第一责任说明：Dirk Täschner.
- 尺寸：21 cm.
- 分类号：a722
- ISBN：9783860124765(paperback) :
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02h0061158 20161027145215.0 161026s2014 gw a frb |000|||ger d 9783860124765(paperback) : CNY500.00 NGL eng rda NGL NGL ger ger ; eng a722 Taschner, Dirk, author. Untersuchungen der akustischen Wirkung von Tragrollen zur zielgerichteten Lärmminderung an Gurtförderanlagen / Dirk Täschner. Investigations of the acoustical effect of idlers for a purposeful noise reduction on belt conveyor system Freiberg : Technische Universität Bergakademie, 2014. aFreiberg : bTechnische Universität Bergakademie, c2014. xiii, 190 pages : color illustrations ; 21 cm. atext btxt 2rdacontent aunmediated bn 2rdamedia avolume bnc 2rdacarrier Freiberger Forschungshefte ; C546 Includes bibliographic reference. Belt conveyor systems are used in mining operations and other industry sectors to transport bulk material. The plant operation is being linked to noise emissions. During inspections and maintenance this can cause an increased noise exposure for affected employees. In the environment of residential buildings or areas in need of protection the exceedance of immission guideline values can lead to a temporary operational limitation of these highly efficient plants. Noise abatement measures primarily at the source or in the vicinity are required to reduce noise immission. The idlers on the carrying belt side of the belt conveyor systems are of crucial importance to the acoustical properties. Their sound power level is determinable at different belt speeds with a test stand for idlers. The results allow conclusions about the mechanical stress and sound emissions during operation in a belt conveyor system. The thesis identifies the sources of noise during the roll process and places them in conjunction with the properties of the surface and the centre offset of the axis. The examination of these two parameters is based on a total indicator reading (TIR) measurement. The angle-dependent data obtained allow a calculation of the eccentricity of the axis and the curve of the circular deviation of the roller tubes. Therefrom derived characteristic values serve as specifications for the adaptation and development of manufacturing processes as well as for a careful selection of low noise idlers for belt conveyors. Text in German, abstract in German and English. Belt conveyor systems. ; Noise reduction. ; Acoustics. Freiberger Forschungshefte ; C546. aCN b010001 010001 P 206 F88 vC546 ; h1 ; rCNY500.00 gljx1607