ZKX2448直线振动筛结构共振的双判定  

Double judgment of structure resonance for ZKX2448 linear vibrating screen

作　　者：王新文[1] 韩阳[1] 常圣强 宫三朋 杨伟[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《煤炭工程》2016年第10期117-119,123,共4页Coal Engineering

摘　　要：为了准确判断ZKX2448直线振动筛是否发生结构共振,利用INV3018CT型24位高精度数据采集仪与DASP-V10分析软件进行测试分析。首先通过试验模态和工作频率的测试,判定振动筛在近7阶结构固有频率附近工作;然后测出筛机6个测点的振动轨迹,与模态振型相对比确定筛机发生结构共振;最后通过左右侧板6个测点X、Y、Z三向振幅和相位,定量计算筛机变形程度,判断出振动筛易损坏区域,为其选择合理的工况点提供依据。In order to accurately confirm the structure resonance of ZKX2448 linear vibrating screen,the INV3018 CT 24bits high precision data acquisition instrument and DASP- V10 analysis software were applied for data collection and analysis. According to experimental modal and working frequency testing,the working frequency of vibrating screen was around 7 order inherent frequency; then vibration tracks of six measuring points on the screen were measured,which were compared with the modal shape confirming the structure resonance; finally,based on amplitude and phase of the 6 points in X, Y, Z three directions, deformation degree was obtained quantitatively, and the vulnerable parts were found,providing basis for selection of reasonable working conditions.

关 键 词：直线振动筛 试验模态 振动轨迹 结构共振 筛机形变 

分 类 号：TD679[矿业工程—矿山机电]