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1、掩护式液压支架设计说明书摘要由于地下煤层的地质环境比较复杂，这就要求在不同的煤层环境中使用不同的与之适应的液压支架。本论文主要阐述了一般掩护式液压支架的设计过程。设计内容包括：选架型、总体设计、主要零部件的设计、主要零部件的校核。支架的形式为掩护式支架。支架除了要有效的对顶板进行有效支撑，还要实现升、降、推移四个步骤。支架采用四连杆机构，改善支架的受力状况，缩小支架的升降过程中顶梁前端前后移动的距离。立柱采用单伸缩液压缸，前端带有加长杆，以满足支架最低及最高位置时的高度要求。顶梁掩护梁、底座都做成箱体结构用钢板焊接而成。整个液压支架的设计都源于煤层厚度这一初始条件，这很好的说明了不
2、同煤层需要不同的液压支架，于是液压支架的更新换代对于提高采煤效率和增加井下安全性显得十分重要。在研制液压支架时，需要对支架进行生产试验和分析研究，确定合理的液压支架受力参数、运动参数和结构参数，以及选定液压支架最佳方案等方面综合性的科学技术问题。本设计主要从支架的工作原理这手，然后进行总体结构设计以及校核。关键词：液压支架；顶梁；底座；立柱；结构设计AbstractAsthecoalundergroundgeologicalenvironmentmorecomplex,whichrequirescoalindifferentenvironmentswithdifferenttoth
3、ehydraulicpressuresupport.Thearticlemainlyelaboratedthegeneralshieldtypehydraulicpressuresupportdesignprocess.Thedesigncontentincludes:Chooses,thesystemdesign,themainsparepartdesign,themainsparepartexamination.Thesupporteliminatesmustrealizeeffectivelycarriesonthestruttotheroof,butalsomustreal
4、ize,tofall,topush,movefoursteps.thesupportusesfourlinkmotiongears,improvesthesupportthestresscondition,reducesthesupporttoriseandfullthedistancewhichintheprocessfortendthetop-beamaroundmoves.Thecolumnusesthelistexpansionandcontractionhydrauliccylinder,frontendhaslegthensthepole,satisfiesthesup
5、porttobelowestandtimethehighestpositionhighrequest.Thetop-beam,shieldsLiang,thefoundationallmakesthepackedinaboxbodystructure,becomeswiththesteelplatewelding.Thedesignofthehydraulicpressuresupportfromallseamthicknessoftheinitialconditions,whichisverygooddescriptionofthedifferentneedsofdifferen
6、tcoalhydraulicpressuresupport,andthereforetheupgradinghydraulicpressuresupportforimprovingefficiencyandincreasingtheundergroundminingsafetyitisextremelyimportant.Atresearchtopressesthesupport,needtocarryonproducetoexperimentandanalyzetheresearch,makesurereasonableofliquidpressesthesupporttobes
7、ubjectedtothedintparameter,thesportparameterandthestructureparameters,andmakeselectiontheliquidtopressthesyntheticsciencetechniqueproblemofaspectofetc.ofthebestprojectofsupport.Thisdesignmainlythishandfromtheworkprincipleofthesupport,th
