液压支架毕业设计--放顶煤液压支架的设计-精品

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1、摘要采煤综合机械化，是加速我国煤炭工业发展，大幅度提高劳动生产率，实现煤炭工业现代化的一项战略措施。综合机械化不仅产量大，效率高，成本低，而且能减轻笨重的体力劳动，改善作业环境，是煤炭工业技术的发展方向。液压支架是综合机械化采煤方法中最重要的设备之一。液压支架主要由以下几个基本部分组成：顶梁，掩护梁，四连杆机构，侧护板，底座，立柱和千斤顶等。设计要遵循支护性能好、强度高、移架速度快、安全可靠等原则。在这次放顶煤液压支架的设计过程中，主要以底座、主顶梁、尾梁和立柱等结构件的机械部分设计为重点，用普通设计步骤设计总体结构尺寸，再用Solidworks初绘总体架型检查配合尺寸，然后转化为CAD并修

2、改细节，最后对主要构件进行强度校核，并用有限元分析部分构件。 关键词：放顶煤液压支架；顶梁；四连杆机构；有限元-86-AbstractThecomprehensivemechanizationofcoalminingistheaccelerationcoalindustrialdevelopmentofourcountry,raiseslaborproductivitysubstantially,realizesthemodernastrategicmeasureofcoalindustry.Synthesizemechanizationnotonlyoutputbig,efficiency

3、haslowcosthighandcanalleviateheavyphysicallaborandimprovementschoolworkenvironment,isthetechnologyofcoalindustrydevelopdirection.Hydraulicsupportistheoneofcomprehensivemostimportantequipmentinthemechanizationmethodofcoalmining.Hydraulicsupportmajorfromsomefollowingbasicallypartialcompositions:Topbe

4、am,screensbeamand4linkagemechanisms,sidefenderandbase,prop.Designtofollowprotectperformancegood,strengthisspeedhigh,moverapid,safelyreliableetc.principle.Inthisdesignprocessofcavinghydraulicsupport,mainlyinsupportofthebase,thetopbeam,thebeamandthecolumnstructureoftheendofthemechanicalpartofthedesig

5、nfocus,withthegeneraldesignproceduretodesigntheoverallbodysize.TheoverallstructureoftheinitialdrawingwithSolidworkstocheckwiththesize,andthentransformedintoandmodifythedetailsofthepartoftheCAD,atlastmajorcomponentofthestrengthcheck,andsomeelementsoftheFEManalysis.Keyword：cavinghydraulicsupport；Cres

6、tbeam；4linkagemechanisms；FEM-86-目录第1章放顶煤液压支架概论...........................11.1放顶煤液压支架发展历史...................................11.2液压支架的应用和意义.....................................31.3低位放顶煤液压支架的组成.................................41.4液压支架的工作原理.......................................71.5小结..................

7、..................................12第2章液压支架整体结构设计........................132.1支架主要尺寸的确定......................................132.2支架四连杆机构的确定....................................152.3四连杆机构的设计.................