掘进机截割头动力学特征分析与优化

Dynamic Characteristics Analysis and Optimization of Roadheader Cutting Head

针对掘进机截割头截割载荷变化较大,影响作业的稳定性以及安全性,通过研究截割头的破煤机理,对截割头动力学特征进行分析,并以横摆工况为例,运用SQP算法对截割头各项受力参数进行优化。仿真实验结果表明,在保证截割速度的条件下,截割比能耗相较于优化前降低了16.55%,生产率提升了18.48%,且负载转矩曲线更加平滑,能够进一步提升掘进机的作业效率以及使用寿命,确保掘进机的作业安全性和稳定性。

In view of the large change of cutting load of roadheader cutting head,which affects the stability and safety of operation,analyzes the dynamic characteristics of cutting head by studying the coal breaking mechanism of cutting head,and optimizes the stress parameters of cutting head by using SQP algorithm under yaw condition.The simulation results show that under the condition of ensuring the cutting speed,the cutting specific energy consumption is reduced by 16.55%,the productivity is increased by 18.48%,and the load torque curve is smoother,which can further improve the operation efficiency and service life of the roadheader,and ensure the operation safety and stability of the roadheader.