中文摘要：

论文以某采煤机摇臂传动系统为研究对象,在UG中建立该齿轮传动系统样机模型,利用ADAMS对齿轮传动系统进行动力学仿真分析。获得摇臂传动系统的高速齿轮在正常、几何偏心1mm和几何偏心2mm不同故障下的啮合力的时域和频域曲线,研究结果表明：随着偏心程度的增加,在时域中啮合力有明显的周期性冲击且对应幅值变大,在频域中啮合频率幅值逐渐减小,而边频带的幅值和密集程度逐渐增加,并引用边带啮合频率幅值比表征这个故障程度。

英文摘要：

First, taking a coal cutter as the research object, the virtual prototype model of transmission system is established in UG and the gear system is systematically analyzed in ADAMS. The gear system of coal cutter under the normal,geometric eccentric 1 mm and geometric eccentric 2 mm fault conditions is simulated. And the meshing force curves in different time and frequency domain are obtained. The results show that with the increase of eccentric degree,meshing force has obvious cyclical impact in the time domain and the corresponding amplitude increases,besides,in the frequency domain meshing frequency amplitude decreases, the side band amplitude and intensity increases gradually.