鉴于滚筒式采煤机割煤时摇臂的振动加剧了设备相关部件的失效及截齿的消耗,故对采煤机摇臂的振动进行分析,建立数学建模。通过对系统的闭环特征时域、频域判断,由奈奎斯特判据进行稳定分析,确定振动的性质。提出了摇臂振动问题的解决方案,以达到降低振动提高设备使用寿命、降低故障率的目的。 In view of the vibration of the rocker during the cutting of coal shearer, the failure of the equipment and the consumption of the picks are exacerbated. Therefore, the vibration of the rocker of the shearer is analyzed and the mathematical modeling is established. Through the closed-loop characteristics of the system time and frequency domain judgments, the Nyquist criterion for stable analysis to determine the nature of the vibration. A solution to the problem of rocker arm vibration is put forward to achieve the purpose of reducing the vibration, improving the service life of the equipment and reducing the failure rate.