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Analysis of the dynamic forces acting on a vibrating screen and its support structure using a scale model
Measurement ( IF 5.2 ) Pub Date : 2021-02-16 , DOI: 10.1016/j.measurement.2021.109179
Thiago Bento Linhares , Claysson Bruno Santos Vimieiro

Vibrating screens are equipment used in various industries, such as mining, steel and food. Although it is simple to install vibratory equipment on a support structure, it is necessary to consider the static and dynamic forces caused by vibration. The present work aims to perform a dynamic analysis of a vibrating screen and measure the dynamic forces transmitted to its metallic support structure, by means of the acceleration g collected. For this, a model of a prototype vibrating screen was created to perform vibration tests, the data were collected on the equipment using accelerometers positioned at strategic points through magnetic devices. In this way, the values obtained by the instrumentation were compared with the theoretical data obtained through a proposed analytical calculation. Analysing the vibrating screen, graphs were made to compare the displacements, resulting in minimal differences between the experimental and analytical data. Specially for this model, the results show that between 1100 rpm and 1400 rpm is the best frequency to obtain results in terms of efficiency and sieving, with less impact on the equipment and its structure. Analysing the forces transmitted from the vibrating screen to its structure, the analytical and experimental values were quite different, mainly at higher frequencies.



中文翻译:

使用比例模型分析作用在振动筛及其支撑结构上的动力

振动筛是在采矿,钢铁和食品等各种行业中使用的设备。尽管将振动设备安装在支撑结构上很简单,但有必要考虑由振动引起的静力和动态力。本工作旨在通过收集的加速度g对振动筛进行动力分析,并测量传递到其金属支撑结构的动力。为此,创建了一个原型振动筛模型来执行振动测试,并使用通过磁性设备定位在关键点的加速度计在设备上收集了数据。通过这种方式,将通过仪器获得的值与通过建议的分析计算获得的理论数据进行比较。分析振动筛,制作图表以比较位移,从而使实验数据与分析数据之间的差异最小。特别针对该模型,结果表明,在1100 rpm和1400 rpm之间是获得效率和筛分结果的最佳频率,而对设备及其结构的影响较小。在分析从振动筛传递到其结构的力时,分析值和实验值存在很大差异,主要是在较高频率下。

更新日期:2021-02-25
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