基于Edem-RecurDyn联合仿真的火车皮厢底冻黏浮煤清扫机构性能优化分析  

PERFORMANCE OPTIMIZATION ANALYSIS OF CLEANING MECHANISM FOR BOTTOM FROZEN STICKY FLOAT COAL IN TRAIN BODY BASED ON Edem⁃RecurDyn CO⁃SIMULATION

作　　者：谢苗[1] 李思遥 刘怡 聂仁东[1] 张鸿宇 朱昀 刘东旭 XIE Miao;LI SiYao;LIU Yi;NIE RenDong;ZHANG HongYu;ZHU Yun;LIU DongXu(School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000

出　　处：《机械强度》2024年第3期626-635,共10页Journal of Mechanical Strength

基　　金：国家自然科学基金面上项目(51874158,51904142)资助。

摘　　要：火车皮作为煤炭运输的主要设备之一,其运输效率一直是煤炭运输行业的关注重点,在北方地区冬季低温条件下,影响运输效率的主要原因是煤炭中所含的水分与凹凸不平的车厢内表面形成黏附,逐渐由车厢表层向煤炭内部扩散,最终产生冻车现象导致设备无法继续运行。首先,以不同清扫方式现存的问题为出发点,结合实际的工程项目,设计了一款自动化冻黏浮煤清扫机构并对其清扫性能进行优化研究。其次,通过理论研究分析建立浮煤冻黏颗粒模型,分析清扫过程中滚刀的运动情况并建立力学模型和数学模型。最后,联合多体动力学软件RecurDyn对清扫机构底部清扫滚筒性能进行仿真研究,求解不同滚筒转速、牵引速度和清扫深度对清扫性能的影响规律,通过优化寻求清扫阻力最小、能耗最低的性能参数匹配方案。结果表明,清扫机构的清扫效率受滚筒转速影响较小,随滚筒转速提高,清扫阻力大小在一定范围内波动;随着牵引速度不断提高,清扫阻力先降低后逐渐增高;清扫深度对清扫阻力的影响最大,随清扫深度的增加,其清扫阻力不断增加。根据单因素参数对清扫阻力大小影响规律,取合理范围利用响应面法对其综合影响规律进行仿真试验,得到目标函数后,利用Matlab对其数学模型求解最优解,最终得到滚筒转速为78 r/min、牵引速度为0.05 m/s、清扫深度为100 mm时,清扫机构所受阻力最小、清扫比能耗最低为0.22 kWh/m^(3),清扫机构性能达到最优。As one of main equipments of coal transportation,the transportation efficiency of train skin has always been the focus of the coal transportation industry.Under the condition of low temperature in winter in northern China,the main reason affecting the transportation efficiency is that the water contained in coal is adhered to the inner surface of the uneven carriage,and gradually diffuses from the surface of the carriage to the inside of the coal,finally,the phenomenon of frozen car causes the equipment to be unable to continue to run.In this paper,firstly,based on the existing problems of different cleaning methods,combined with the actual project,an automatic frozen sticky floating coal cleaning mechanism was designed and its cleaning performance was optimized.Through theoretical research and analysis,the floating coal frozen particle model was established.Secondly,the movement of the disc cutter during the cleaning process was analyzed,and the mechanical model and mathematical model were established.Finally,the multi⁃body dynamics software RecurDyn was used to simulate the performance of the cleaning drum at the bottom of the cleaning mechanism.The influences of different drum speed,traction speed and cleaning depth on the cleaning performance was solved,and the performance parameter matching scheme with the smallest cleaning resistance and the lowest energy consumption was sought by optimization.The results show that the cleaning efficiency of the cleaning mechanism is less affected by the drum speed.With the increase of the drum speed,the cleaning resistance fluctuates within a certain range.As the traction speed continues to increase,the cleaning resistance firstly decreases and then gradually increases;the cleaning depth has the greatest influence on the cleaning resistance.With the increase of the cleaning depth,the cleaning resistance increases continuously.According to the influence law of single factor parameters on the cleaning resistance,the response surface method was used to simulate the comprehe

关 键 词：清扫机构 冻黏浮煤 联合仿真 清扫性能 参数优化 

分 类 号：TD562[矿业工程—矿山机电]