【摘要】：懸臂式掘進(jìn)機(jī)是一種集截割、裝載、運(yùn)輸以及噴霧系統(tǒng)為一體的綜掘機(jī)組,主要用在煤和半煤巖巷道的掘進(jìn)開采。其截割執(zhí)行部分通常由懸臂和截割頭組成。截割頭是掘進(jìn)機(jī)上最重要的部件之一，可以在工作面自由運(yùn)動，形成任意形狀斷面的巷道，其直接參與截割煤巖，結(jié)構(gòu)復(fù)雜，參數(shù)較多，是研究設(shè)計(jì)的重點(diǎn)。 國內(nèi)某煤礦機(jī)械公司生產(chǎn)的EBZ-135型懸臂式掘進(jìn)機(jī)工作時(shí)，截割頭振動嚴(yán)重，各截齒受到的外力差異較大，造成截齒的使用壽命差異較大，不利于截齒的修配。導(dǎo)師和我受企業(yè)的委托，本課題將對該型號掘進(jìn)機(jī)截割頭的截齒排列進(jìn)行優(yōu)化設(shè)計(jì)。 本論文開篇說明了課題研究的目的和意義，介紹了國內(nèi)外掘進(jìn)機(jī)的發(fā)展?fàn)顩r，，讓讀者對掘進(jìn)機(jī)有一個(gè)大概的了解。接著在Pro/Engineer WildFire5.0中建立截割頭和煤巖的3D模型，將模型無縫連接到ANSYS/LS-DYNA13.0中進(jìn)行顯式動力分析，從而建立截割頭在橫切和鉆進(jìn)兩種工況時(shí)的虛擬樣機(jī)模型，再通過LS-PREPOST3.0通用后處理器查看求解結(jié)果，得到截割頭和各截齒的受力隨時(shí)間變化情況，并對各截齒受力數(shù)值進(jìn)行統(tǒng)計(jì)分析。然后建立截割頭在橫切工況時(shí)的受力數(shù)學(xué)模型，基于MATLAB R2010b工具箱封裝的遺傳算法（GA算法）和相關(guān)理論公式，考慮到截割頭體的形狀特點(diǎn)，分三段優(yōu)化各截齒的截線間距，使截割頭載荷波動降低,截齒受到的外力差異減小，從而減少截齒的修配耗時(shí)，提高截齒使用壽命和整機(jī)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.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TD421.5

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