基于采煤机载荷谱的滚筒截割阻力分析

Force Analysis of Drum Based on Shearer’s Cutting Load Spectrum

针对采煤机滚筒受力的问题,采用最大似然函数和改进的牛顿-拉夫森算法,对上湾矿采煤机的载荷谱进行分析处理,求出采煤机的截割载荷及其服从的伽玛分布的概率密度函数,进而得到牵引速度对截割载荷的影响。

The maximum like lihood methods and improved Newton-Ralph’s algorithm are used to certain the magnitude of the drum’s force.The shearer’s cutting load spectrum in the Shangwan mine is analysed and processed.Working out the shearer’s cutting load and the Gamma distribution probability density function which the cutting load is possessed at,and then it is determined how the cutting load affect the traction speed.