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ML280螺旋钻采煤机工作机构的设计毕业论文.doc

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ML280螺旋钻采煤机工作机构的设计毕业论文.doc

中国矿业大学2005届本科生毕业设计第1页目录1绪论...................................................11.1采煤机的发展史........................................................................................51.2我国采煤机的发展展望............................................................................61.2.1大功率、大截深电牵引采煤机的进一步研究..............................61.2.2大功率采煤机的工况监测、故障诊断与控制系统的研究..........61.2.3应用高新技术,严格管理,提高可靠性......................................61.3螺旋钻采煤机的概述................................................................................71.4螺旋钻采煤机的市场价值......................................................................102设计要求及方案确定.....................................122.1设计要求..................................................................................................122.1.1使用条件........................................................................................122.1.2液压系统........................................................................................142.1.3钻杆................................................................................................152.1.4供电系统........................................................................................152.2总体方案的设计......................................................................................153螺旋钻杆结构参数的优化设计..............................173.1煤机螺旋钻杆结构参数优化数学模型的建立......................................183.1.1螺旋钻杆的装煤生产率理论分析................................................183.1.2螺旋钻杆装煤生产率的计算........................................................193.1.3螺旋叶片设计及强度校核............................................................213.1.4优化约束条件的建立....................................................................253.1.5模型的求解....................................................................................273.2钻杆轴及连接件的设计..........................................................................293.3联接套的设计..........................................................................................324传动减速箱的设计计算...................................364.1齿轮传动的设计与计算..........................................................................364.1.1基本的参数....................................................................................374.1.2齿轮的计算....................................................................................374.1.3弯曲强度校核计算........................................................................424.2轴的设计计算..........................................................................................444.2.1按扭转强度概略计算轴径............................................................444.2.2计算支反力和绘弯扭矩图............................................................454.2.3强度精确校核(验算安全系数)................................................495推进液压缸、机架以及导轨的设计..........................535.1液压缸的设计..........................................................................................535.1.1钢筒的设计计算............................................................................54中国矿业大学2005届本科生毕业设计第2页5.1.3液压缸的校核................................................................................615.2液压缸的结构..........................................................................................655.2.1缸筒与端盖的连接........................................................................655.2.2活塞组件........................................................................................665.2.3活塞组件的密封............................................................................675.3推进机构导轨的设计..............................................................................696螺旋钻采煤机的使用与维护................................706.1润滑及注油..............................................................................................706.2地面检查与试运转..................................................................................706.3下井及井下组装......................................................................................716.4采煤机的井下操作..................................................................................726.5机器的维护与检修..................................................................................73专题部分................................................75题目螺旋钻头的研究.....................................75引言...................................................751煤及煤层的性质.........................................761.1煤的强度..................................................................................................761.2煤的坚固性系数......................................................................................771.3煤的截割阻抗..........................................................................................771.4煤的压张效应..........................................................................................772截割工况和刀具.........................................782.1截割刀具的几何参数..............................................................................782.2刀具几何参数对截割性能的影响..........................................................793截齿受力分析..........................................824截齿运动模型..........................................854.1坐标系的建立..........................................................................................854.2截齿的运动学模型..................................................................................864.3不干涉条件..............................................................................................885截齿的优化布置.........................................91结论...................................................97参考文献................................................99附录1.................................................101螺旋钻杆优化设计程序(MATLAB).....................................................101附录2.................................................102螺旋钻杆连接件优化设计程序(MATLAB、LINGO).........................102附录3.................................................104螺旋钻专题程序(MATLAB、LINGO).................................................104翻译部分...................................错误未定义书签。英文原文.........................................................................错误未定义书签。中国矿业大学2005届本科生毕业设计第3页中文译文.........................................................................错误未定义书签。致谢.................................................116摘要本毕业设计由一般设计和专题设计两大部分组成,主要设计思想是以本机械专业知识为基础的最优化设计。一般设计部分主要是对螺旋钻采煤机的工作机构进行的优化设计,本文所设计的ML280螺旋钻采煤机,首先通过对螺旋叶片的受力分析和钻杆的输送能力进行的设计,建立了以螺旋钻杆输送能力最佳为目标函数的优化模型,对螺旋钻的参数化进行的设计,并且取得了非常好的效果,同时本文结合本机械专业知识和参考机械设计手册,对钻头的转动齿轮和推进液压缸进行了设计。专题部分的设计着眼于对螺旋钻头的设计,通过对煤层性质的分析,以截煤理论和力学知识为基础,建立了钻头的运动学模型和动力学模型,本专题主要是对截齿的干涉和螺旋钻头的截煤能力进行研究,并建立以截割能耗最底为目标函数的优化模型,对截齿的布置进行最优化设计,通过计算机MATLAB和LINGO编程求得截齿的布置参数同时在PRO/E软件下对模型进行了模拟,以观察钻头的干涉情况。关键词螺旋钻采煤机螺旋钻头干涉优化设计中国矿业大学2005届本科生毕业设计第4页ABSTRACTThisdiplomawinningdesigniscontainedtwoparts,onepartisgeneraldesignsandtheotherpartisdissertation.Thethoughtofmypaperisoptimumdesignwhatbaseonmymajorprofession.Thegeneralpartisoptimumdesignonthemainlyworkorganizationwhichdrivethetwistdrillstocuttingthecoal,theshearderdesignedinthispaperML280.Firstthroughanalysisthestressofthescrewbladeandthecapabilityoftheaugerstem,settingupoptimummodelwhichobjectiveismakingthetransportationcapabilitymaximizing,thencangainedtheparameteroftheaugerstem.Thismodelhasachievedexcellenteffect.Thistextcombinestheprofessionalknowledgeofmechanicalengineeringandtheenchiridionofmechanicalengineeringdesigneddrivewheelgearandthehydraulicpressuresystem.Thedissertationisfocusontheaugerbitstudying,throughanalysisthecharacterofcoalseam,andbaseonthetheoryofexcavatecoalanddynamics,thenestablishthemodelwhichobjectiveismakingthecuttingpowercostminimizing,thencompiletheMATLABandLINGOprogramstheresolvethisproblem,andgettheparameterofthewayofaugerbitscollocation.AtthesametimecheckthevalidityofbyPRO/Esoftware,inordertoobservedtheaugerbitinterferencestatus.Keywordshearderaugerbitsinterferenceoptimumdesign

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