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首页> 外文会议>Society for Machinery Failure Prevention Technology Meeting; 20050418-21; Virginia Beach,VA(US) >EFFECT OF DAMPING ON COAL MILL VIBRATION
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EFFECT OF DAMPING ON COAL MILL VIBRATION

机译：阻尼对煤矿振动的影响

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A coal mill was observed to go into resonance at various coal feeder speeds. As a result of the resonant condition, shaft failures occurred. The dynamic displacements of the three grinding rollers were measured for subsequent analysis using instrumentation techniques developed by Engineering Consultants Group Inc. (ECG).rnA finite element model of the mill and grinding rollers (3 each) was developed. These major components of the FEA model were tied together through the coal bed stiffness. Basic measurements results and a modal analysis of the mill were reported at the 2004 meeting of MFPT. In the study, transient forces, which were based on measurement, were applied to the three grinding rollers to determine the dynamic response. The addition of dampers to the roller compression springs was evaluated for the effect on the shaft stresses.
机译：观察到磨煤机在各种给煤机速度下均会产生共振。由于共振条件，发生了轴故障。使用Engineering Consultants Group Inc.（ECG）开发的仪器技术测量了三个磨辊的动态位移，以便进行后续分析。开发了磨机和磨辊（每个3个）的有限元模型。 FEA模型的这些主要组成部分通过煤层刚度捆绑在一起。 MFPT的2004年会议报告了该厂的基本测量结果和模态分析。在研究中，将基于测量的瞬态力施加到三个磨辊上以确定动态响应。评估了在滚柱压缩弹簧上添加阻尼器对轴应力的影响。

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