EML340型连续采煤机截割臂振动特性分析

Analysis of vibration characteristics of cutting arm of EML340 continuous miner

为了准确得到连续采煤机截割臂工作时的振动特性,以模态运动能分析结果为主要参考依据,模态应变能结果为辅助参考依据,对连续采煤机截割臂上传感器进行优化配置。利用传感器采集截割臂振动加速度信号,并对振动加速度信号进行时域和频域分析,得到了该信号的特征和频带能量分布情况,为进一步优化连续采煤机结构设计和故障诊断提供了理论基础。

In order to get vibration characteristics of cutting arm of continuous miner in working condition,the optimized sensor disposition was done taking results of the modal movement energy as mainreference and results of modal strain energy as auxiliary reference.Vibration acceleration signals of cutting arm were collected by the sensor,and time-domain analysis and frequency-domain analysis of the signal were done.And the distribution of vibration characteristics and frequency-band energy was obtained.It provides a theoretical basis for further optimization of structural design and fault diagnosis of continuous miner.