车速表试验台的设计研究

标准型车速表试验台的设计研究TheResearchOntheDesignofstandardspeedometerTestBench摘要标准型车速表试验台是以滚筒模拟路面，利用车轮与滚筒在无相对滑移时线速度一致的原理，通过与滚筒同步的转速传感器测量汽车车速表示值误差的设备。车速表是提供汽车行驶速度信息的重要仪表，驾驶员在行车途中能够正确掌握车速，是提高运输生产力与保证安全行车的关键。因而为保证行车安全，车速表要经过车速表试验台定期检验和校验，为减少交通事故及减轻事故过程中对乘员及行人的伤害，从而提高交通安全性有着非常重要的意义。详细介绍标准型车速表实验台的结构、工作原理，并对操作方法做有简单介绍。利用SolidWorks软件对标准型车速表试验台进行设计。着重对标准型车速表试验台机械部分进行设计：一、对机械部分的设计进行分析，如滚筒的尺寸及强度设计，机架强度设计、轴承座的设计、举升机构的设计。二、对部分零件的选择与校核进行分析，即滚筒支撑轴承的选择与校核。关键词：SolidWorks软件；标准型车速表试验台；机械设计；零件校核ABSTRACTStandarddrumspeedometersimulationtestbenchusesthedrumtosimulatetheground.Bytheprincipleoftheconsistentspeedisthesamewhenthere’snorelativeslipbetweenthewheelandthedrum,thebenchcandetectthevehiclespeederrorwiththespeedsensorthatsynchronizewiththedrum.Speedometerisanimportantinstrumenttoprovidevehiclespeedinformation.Thedrivercorrectlyknowingthevehiclespeedontheway,isakeypointtoimproveproductivityandensurethesafetyoftransportation.Inordertoensuretrafficsafety,speedometersshouldbeperiodicallyinspectedonthespeedometerbench.Inordertoreducetrafficaccidentsandreducethecrew’sinjuryduringtheaccident,thisbenchplaysanimportantroleinimprovingtransportationsafety.Thispaperdetailedintroducesthestructureandtheworkingprincipleofthestandardbench,andthemethodtooperateisbrieflyintroduced.ThedesignofthebenchusesSolidworkssoftware.Thispaperfocusesonthedesignofthemechanicalpartofthebench.Firstly,analyzingthedesignofthemechanicalpart,suchasthesizeoftherollandthedesignofthestrength,framestrengthdesign,bearingdesign,thedesignofliftingmechanism.Secondly,analyzingtheselectionandverificationofsomespareparts,thechoiceandverificationofrollerbearings.KeyWords：SolidworksSoftware;Standardspeedometertester;Mechanicaldesign;Partschecking目录1绪论........................................................................................................................11.1课题研究背景.......................................................................................................11.2汽车安全检测技术的发展...................................................................................11.3课题研究的目的和意义.......................................................................................21.4国内外汽车安全检测技术的发展状况...............................................................21.5课题研究的主要内容...........................................................................................32对于SOLIDWORKS软件的基本介绍............................................................................42.1SOLIDWORKS软件的制作背景...................................................................................42.2SOLIDWORKS软件的特点..........................................................................................42.3SOLIDWORKS软件的基本功用...................................................................................53标准型车速表试验台概述..........................................................................................83.1标准型车速表试验台的基本结构.......................................................................83.2工作原理.............................................................................................................103.3车速表误差形成的原因.....................................................................................113.4有关标准.............................................................................................................123.5使用方法.............................................................................................................123.6使用注意事项.....................................................................................................134标准型车速表试验台机械部分设计........................................................................144.1滚筒组..................................................................................................................144.2框架.....................................................................................................................164.3举升机构..............................................................................................................164.4联轴器.................................................................................................................175机械部分设计及部分零件选择与校核的计算........................................................185.1滚筒设计..............................................................................................................185.1.1主要技术指标..............................................................................................185.1.2尺寸设计......................................................................................................185.1.3强度校核......................................................................................................195.2滚筒中心距的设计..............................................................................................205.3机架的设计..........................................................................................................215.3.1支撑轴承座型钢计算..................................................................................215.3.2总支撑型钢计算..................................................................