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滚轮式脚踏式液压升降平台设计说明书.doc

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滚轮式脚踏式液压升降平台设计说明书.doc

滚轮式脚踏式液压升降平台车设计摘要本课题是为工厂车间等场所搬运货物而设计的脚踏液压升降台,是工业生产的必然产物。滚轮式脚踏式液压升降平台车由优质钢材、液压泵、液压缸、油管、脚轮等有机组合而成,它可以代替人手的繁重劳动,显著减轻工人的劳动强度,改善劳动条件,提高劳动生产率和自动化水平。本文所介绍的液压升降台最大载重量是500kg,该升降台由两部分组成机构本体和液压系统。升降台升降的操作控制是由一套液压系统和液压缸来完成的,而组合而成的液压系统全部放在液压油泵中。液压泵和液压缸都采用标准件,其中液压缸为单作用液压缸,液压泵为脚踏式,本文首先通过支撑铰架的受力分析详细阐述了要提升起货物,液压缸所需承受的最大压力。接着以之作为根据说明液压泵、液压缸等标准件的选用及型号,并介绍液压泵内部相关液压系统原理以及对液压泵储油量进行核算。此外在强度校核方面,主要通过材料力学知识对铰架以及液压缸作用两端的轴进行强度校核,最后对本升降台进行重量和成本核算。本毕业设计借鉴了大量的资料,采用了许多国家标准,充分的吸收了各行业有关专家的宝贵经验。关键词脚踏式升降台液压缸液压泵液压系统标准件成本核算RollertypehydraulicliftingplatformpedalcardesignAbstractThisissueisrollertypehydraulicliftingplatformpedalcardesignforplacessuchasfactoryandmachineshopforcargohandling,itisainevitableproductinindustrialproduction.Thismachineisposedbyhighqualitysteel,hydrauliccylinder,hydraulicpump,pipeline,castersandsoon.Itcanreplacetheheavymanuallabor,significantlyreducelaborintensityandimproveworkingconditionsandraisetheleveloflaborproductivityandautomation.Thebiggestloadofthissnorkeldescribedinthisarticleis500kgandtheplatformconsistsoftwopartsbodyandthehydraulicsystemlift.Theoperationandcontrolofthesnorkelarecompletedbyasetofhydraulicsystemsandhydrauliccylinders,alsothecombinationofallofthehydraulicsystemarestoredinthehydraulicpump.Bothhydraulicpumpsandhydrauliccylindersarestandard,theformerisasinglehydrauliccylinderandthelaterisPedaltype。firstly,Thisarticleexpoundtherequiredmaximumpressurethehydrauliccylinderbearthatneedtoupthegoodsthroughthesupportofthehingeforceanalysis.accordingtothis,thestandardandmodelchoiceofthehydraulicpump,hydrauliccylindearedetermined,Anditdescribesrelevanthydraulicsystemprinciplesandaccountoilvolumeofthehydraulicpump.Inaddition,thispapercheckthestrengthofthehingeframeandtheaxesatbothendsoftheHydrauliccylinderbymainlyusingthemechanicsofmaterialsknowledge,Finally,checktheweightandcostofthisliftingplatform.ThisGraduationProjecthavereferfromalargeamountofinformationandnationalstandards,itfullyabsorbedthevaluableexperienceofexpertsinallwalksoflife.KeywordPedalstyleplatformhydraulicpumphydrauliccylinderhydraulicsystemstandardpartscostaccounting目录1绪论1.1课题研究的目的及意义............................................................................................11.1.1滚轮式脚踏式液压升降平台车设计的目的............................................................11.1.2滚轮式脚踏式液压升降平台车设计的意义............................................................11.2国内外液压技术研究现状及发展趋势....................................................................11.2.1研究现状....................................................................................................................11.2.2发展趋势....................................................................................................................21.3本课题研究内容........................................................................................................22滚轮式脚踏式液压升降平台车的总计机设2.1总体方案的分析比较和确定....................................................................................32.2液压升降平台车的结构及运动原理........................................................................43升降台尺寸初步分析计算3.1升降台高度的计算...................................................................................................73.2相关角度的计算........................................................................................................73.3液压缸作用结构图分析............................................................................................84升降台受力及力矩分析4.1整体受力分析图......................................................................................................104.2外铰架受力分析图..................................................................................................104.3内铰架受力分析图..................................................................................................104.4力和力矩的分析计算..............................................................................................114.4.1铰架上端铰支受力..................................................................................................114.4.2整体受力分析计算................................................................................................124.4.3内、外铰架单独受力分析......................................................................................124.4.4力矩平衡分析..........................................................................................................124.5液压缸受力分析......................................................................................................134.5.1液压缸受力公式的导出..........................................................................................134.5.2液压缸最大受力时数值及角度计算......................................................................145液压系统的分析5.1受载分析.................................................................................................................165.2液压系统方案设计..................................................................................................165.2.1设计要求..................................................................................................................165.2.2液压系统原理图......................................................................................................176液压缸、液压泵的选型6.1液压缸基本尺寸计算..............................................................................................186.2液压缸具体选型......................................................................................................196.3液压泵设计计算及选型..........................................................................................196.4油量的校核..............................................................................................................207脚轮滚轮的选用7.1选用要求.................................................................................................................217.2脚轮实际选型.........................................................................................................217.3滚轮的选用...............................................................................................................228各构件参数设计8.1内、外铰架材料及设计尺寸选择..........................................................................228.2滚道材料及设计尺寸选择......................................................................................228.3升降工作台材料及设计尺寸选择..........................................................................238.4底座材料及设计尺寸选择......................................................................................239应力计算及强度校核9.1内、外铰架力的分解..............................................................................................239.2外铰架轴力图、剪力图和弯矩..............................................................................249.3内铰架轴力图、剪力图和弯矩图分析..................................................................269.4铰架应力强度校核..................................................................................................279.4.1铰架截面尺寸的确定..............................................................................................289.4.2铰架截面应力分析校核..........................................................................................289.5肋板连接轴强度校核..............................................................................................319.5.1肋板连接轴受力和弯矩图......................................................................................319.5.2肋板连接轴强度校核..............................................................................................3210升降平台车重量核算10.1升降台总重计算核对................................................................................................3311升降台成本核算11.1成本核算概念.........................................................................................................34

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