辊压机煤粉成型力学分析  

Study on the Forming Mechanics of Coal Fines in Roller Machine

作　　者：张波[1] 荆森 张宁 雷贤卿[1] 杨正海 ZHANG Bo;JING Sen;ZHANG Ning;LEI Xianqing;YANG Zhenghai(College of Mechanical and Electrical Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China)

机构地区：[1]河南科技大学机电工程学院

出　　处：《机械设计与研究》2019年第4期187-192,共6页Machine Design And Research

基　　金：国家自然科学基金资助项目(U1730130)

摘　　要：基于理论与实验相结合的方法,针对实际工况下辊压机辊压区内的力学状态进行研究分析。对煤粉受力与压缩状态进行标定实验,得到煤粉受力与受压后密度之间的公式。基于散体力学相关理论对辊轮进行力学分析,建立辊轮承受扭矩的数学模型并计算辊轮承受扭矩,再进行扭矩实验验证与辊轮电机优选。验证结果表明:辊轮承受扭矩的理论计算值与实验验证值的相对误差为0.45%~3.69%,验证了理论计算的正确性;并且辊轮电机选取15 KW即可满足要求,在降低辊压机生产成本的同时,也为辊压机之后的工作节省了运行成本。Based on the method of combining theory with experiment,The research and analysis of the mechanical state in the roller pressing area of the roller machine under the actual working condition are carried out. The relation between mechanics state of coal fines with compression of coal fines are calibrated by experiment,the formula between the pressure of coal fines and the density after compression is obtained. Mechanical analysis of roller wheel based on knowledge of bulk mechanics is carried,to built mathematical model of bearing torque roller wheel and compute bearing torque of roller wheel,to verify validity of theoretical arithmetic by experiment and selected optimal motor. The verification results show that the relative error of bearing torque of roller wheel is 7. 1% or 9. 6%,the correctness of the theoretical calculation is verified. The requirement can be reached by selecting 7. 5 KW roller wheel motor. While reducing the production cost of the roller machine,it also saves the running cost for roller machine.

关 键 词：辊压机 辊压区 散体力学 力学分析 辊轮电机 

分 类 号：TH122[机械工程—机械设计及理论]