悬臂式掘进机截割头截齿排列的优化设计
发布时间：2018-10-08 14:15
【摘要】：悬臂式掘进机是一种集截割、装载、运输以及喷雾系统为一体的综掘机组,主要用在煤和半煤岩巷道的掘进开采。其截割执行部分通常由悬臂和截割头组成。截割头是掘进机上最重要的部件之一，可以在工作面自由运动，形成任意形状断面的巷道，其直接参与截割煤岩，结构复杂，参数较多，是研究设计的重点。 国内某煤矿机械公司生产的EBZ-135型悬臂式掘进机工作时，截割头振动严重，各截齿受到的外力差异较大，造成截齿的使用寿命差异较大，不利于截齿的修配。导师和我受企业的委托，本课题将对该型号掘进机截割头的截齿排列进行优化设计。 本论文开篇说明了课题研究的目的和意义，介绍了国内外掘进机的发展状况，，让读者对掘进机有一个大概的了解。接着在Pro/Engineer WildFire5.0中建立截割头和煤岩的3D模型，将模型无缝连接到ANSYS/LS-DYNA13.0中进行显式动力分析，从而建立截割头在横切和钻进两种工况时的虚拟样机模型，再通过LS-PREPOST3.0通用后处理器查看求解结果，得到截割头和各截齿的受力随时间变化情况，并对各截齿受力数值进行统计分析。然后建立截割头在横切工况时的受力数学模型，基于MATLAB R2010b工具箱封装的遗传算法（GA算法）和相关理论公式，考虑到截割头体的形状特点，分三段优化各截齿的截线间距，使截割头载荷波动降低,截齿受到的外力差异减小，从而减少截齿的修配耗时，提高截齿使用寿命和整机截割性能。
[Abstract]:The cantilever roadheader is a kind of fully mechanized excavator which integrates cutting loading transportation and spray system. It is mainly used for driving and mining of coal and semi-coal roadway. The cutting part usually consists of a cantilever and a cutting head. Cutting head is one of the most important parts in the roadheader. It can move freely in the working face and form the roadway with any shape section. The cutting head is directly involved in cutting coal and rock, the structure is complex and the parameters are many, so it is the focus of research and design. When the EBZ-135 type cantilever roadheader produced by a coal mine machinery company in China is working, the vibration of the cutting head is serious, and the external force of the cutting teeth varies greatly, which results in the great difference in the service life of the cutting teeth, which is not conducive to the repair of the cutting teeth. The tutor and I are entrusted by the enterprise, this subject will optimize the arrangement of the cutting head of this type of roadheader. At the beginning of this paper, the purpose and significance of the research are explained, and the development of the roadheader at home and abroad is introduced, so that readers can have a general understanding of the roadheader. Then the 3D model of cutting head and coal rock is established in Pro/Engineer WildFire5.0, and the model is seamlessly connected to ANSYS/LS-DYNA13.0 for explicit dynamic analysis, and then the virtual prototype model of cutting head under two conditions of crosscutting and drilling is established. Then through the LS-PREPOST3.0 general post processor to check the results of the solution, the force of the cutting head and each tooth changes with time, and the value of the force of each cutter is statistically analyzed. Then the force mathematical model of cutting head under transverse cutting condition is established. Based on the genetic algorithm (GA algorithm) encapsulated in MATLAB R2010b toolbox and related theoretical formulas, considering the shape characteristics of cutting head body, the cutting line spacing is optimized in three sections. The load fluctuation of cutting head is reduced, and the difference of external force is reduced, which reduces the working time of gear cutting, and improves the service life and cutting performance of cutting machine.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD421.5
[Abstract]:The cantilever roadheader is a kind of fully mechanized excavator which integrates cutting loading transportation and spray system. It is mainly used for driving and mining of coal and semi-coal roadway. The cutting part usually consists of a cantilever and a cutting head. Cutting head is one of the most important parts in the roadheader. It can move freely in the working face and form the roadway with any shape section. The cutting head is directly involved in cutting coal and rock, the structure is complex and the parameters are many, so it is the focus of research and design. When the EBZ-135 type cantilever roadheader produced by a coal mine machinery company in China is working, the vibration of the cutting head is serious, and the external force of the cutting teeth varies greatly, which results in the great difference in the service life of the cutting teeth, which is not conducive to the repair of the cutting teeth. The tutor and I are entrusted by the enterprise, this subject will optimize the arrangement of the cutting head of this type of roadheader. At the beginning of this paper, the purpose and significance of the research are explained, and the development of the roadheader at home and abroad is introduced, so that readers can have a general understanding of the roadheader. Then the 3D model of cutting head and coal rock is established in Pro/Engineer WildFire5.0, and the model is seamlessly connected to ANSYS/LS-DYNA13.0 for explicit dynamic analysis, and then the virtual prototype model of cutting head under two conditions of crosscutting and drilling is established. Then through the LS-PREPOST3.0 general post processor to check the results of the solution, the force of the cutting head and each tooth changes with time, and the value of the force of each cutter is statistically analyzed. Then the force mathematical model of cutting head under transverse cutting condition is established. Based on the genetic algorithm (GA algorithm) encapsulated in MATLAB R2010b toolbox and related theoretical formulas, considering the shape characteristics of cutting head body, the cutting line spacing is optimized in three sections. The load fluctuation of cutting head is reduced, and the difference of external force is reduced, which reduces the working time of gear cutting, and improves the service life and cutting performance of cutting machine.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD421.5
【参考文献】
相关期刊论文 前10条
1 王荣杰,陈义胜,李保卫,徐龙君;用气体吸附法研究煤的分形维数[J];包头钢铁学院学报;1997年03期
2 沙永东;李晓豁;;纵轴式掘进机截割头结构参数模糊优化模型[J];辽宁工程技术大学学报;2006年S2期
3 毛君;吴常田;谢苗;;浅谈悬臂式掘进机的发展及趋势[J];中国工程机械学报;2007年02期
4 李晓豁;何洋;李婷;杨婷婷;;纵轴式掘进机截割机构纵向随机振动的仿真研究[J];工程设计学报;2013年06期
5 李晓豁;闫建伟;张惠波;邓云;;割岩截齿的应力分布及其载荷的仿真研究[J];计算机仿真;2011年11期
6 白金泽,丁桦,梁乃刚;一种岩石概率型本构及其应用[J];力学与实践;2005年03期
7 张鑫,曾庆良;掘进机截割头多目标优化设计研究[J];煤矿机械;2005年06期
8 汪胜陆;孟国营;田R
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