基于多目标优化的采矿机滚筒结构参数优化设计

Optimization Design of Shearer Drum Structure Parameters Based on Multi-objective Optimization

针对采矿机滚筒结构参数进行优化,以期提高其工作可靠性及工作效率。建立截割比能耗、载荷波动系数以及生产率和块煤率评价指标,并将其作为滚筒性能优化评价指标。使用MATLAB软件对多目标优化数学模型的求解过程进行优化。通过理论分析和虚拟样机仿真方法得知,当截割阻抗值较低时,优化前后滚筒性能优化评价指标相差不大。随着截割阻抗变大,优化后的滚筒性能优化评价指标相比传统滚筒的性能评价指标变得更优,说明优化后的滚筒,对采矿机的截割性能有很大的提升,能够较好的提升采矿机的生产率、块煤率,降低载荷波动系数和比能耗值。

The structural parameters of the shearer drum are optimized to improve the reliability and efficiency,including the establishment of cutting specific energy consumption,the load fluctuation coefficient,the productivity and the lump rate evaluation index as the drum performance optimization evaluation index. MATLAB software is used to optimize the mathematical model of multi-objective optimization. Through theoretical analysis and virtual prototype simulation,it is found that when the cutting impedance value is low,there is little difference between the performance evaluation index of the cylinder before and after optimization. With the cutting resistance larger,the optimized drum performance index in the optimization performance compared with traditional index of drum becomes better. After optimization,the mining machine cutting performance has been greatly improved,as can improve the productivity of coal mining machine to reduce the load fluctuation coefficient and the ratio of energy consumption value.