仓库大门开闭机构设计毕业论文.doc

第1页目录1绪论11.1概述···················································································11.2链传动················································································11.3齿轮传动·············································································31.3.1齿轮传动发展趋································································32链传动部份的设计·····································································52.1链的设计·············································································52.2滚子链强度校核···································································73减速机构的设计········································································83.1电机的选型··········································································83.2传动零件设计·······································································93.2.1第一级传动······································································93.2.2第二级传动·····································································143.2.3第三级传动·····································································193.3轴的计算············································································243.3.1高速轴············································································243.3.2中间轴···········································································283.3.3中间轴···········································································323.3.4输出轴···········································································363.4滚动轴承的选择和计算························································403.5键连接的计算·····································································433.6减速器的润滑和密封形式·····················································453.7减速器箱体、附件设计·························································473.8出厂检验与试验··································································493.9储运、安装、试动转、维护···················································513.10试运转·············································································523.11使用维护··········································································534链轮的具体尺寸设计·······························································544.1整体尺寸···········································································544.2轴向齿廓及尺寸··································································555链轮轴的设计与布置································································565.1链条的竖直张紧与轴的设计··················································56第2页5.2链轮的水平张紧与轴的设计··················································585.3大门2的主动轮布置····························································59结论······························································································61参考文献······················································································62翻译部分英文原文··············································································64中文译文··············································································69致谢······························································································73摘要仓库大门主要是为了方便仓库内的贷物进出，为了达到此目的。此次设计中大门为对开式，每扇门宽4米、高6米，重900千克。大门开闭驱动方式为电机驱动，而且两扇门共用一个电机。电机带动一个圆柱直齿三级减速器，在减速器的输出轴上带链轮，大门的伸缩杆卡在链条的卡口内，当链轮转动时带动链运动从而使大门与链同步运动。为了使两个大门能实现同步开闭，在电机的输出轴上还带有一个齿轮，与另一扇门的链轮轴上同尺寸齿轮相啮合，使另一扇门的链轮与电机直接驱动的链轮转速相等而方向相反。门的开与闭由电机正反转控制。当大门开到极限位置时，会将大门导轨上的行程开关触点压开电机停止转动。整个机构中主要涉及的传动方式为链传动。由于每扇大门宽4米所以链传中系统中两个链轮的设计中心距为4.5米，为了防止中心距过大链产生下垂，采用增大中心距的办法对链进行张紧。而链轮轴都采用悬臂梁式轴，一端伸在预埋在墙上的钢板内，在轴表面车螺纹轴用螺母将其固定在钢板上。第3页关键词：链传动、链张紧、三级减速ABSTRACTWarehousedooristofacilitatethestorageoftheloan-to-access,inordertoachievethisobjective.Thedesignoftheoff-door,thedoorofeachfourmeterswide,sixmetershigh,weight900kg.Closedthedooropenforthedrivemotordrive,andtwodoorsshareamotor.Acylindricalmotordriventhreestraightteethreducer,theoutputshaftinreducerwithsprocket,theexpansion-carddoortothechainofcardsinthemouth,whentherotationwhenthesprocketchaindrivenmovementsothatthedoorchainsynchronizationwiththemovement.Inordertoachievethetwodoorscanbeopenedsimultaneouslyclosed,theoutputshaftinthemotoralsohasagear,andanotherdoorofthesamesizegearsprocketaxisofengagementsothatanotherdoorofthemotoranddirectdrivesprocketMovingthesprocketandthesamespeedinoppositedirections.Thedoorsopenedandclosedbythepositiveandmotorcontrol.Whenthedooropenedtothelimitposition,thedoorwillguidethetripswitchcontactpressuretostopamotorrotation.Themainagenciesinvolvedinthetransmissionmodeforthechaindrive.Sinceeachdoorfourmeterswideintheso-linkedsystemofthetwosprocketdesigncenterdistanceof4.5metres,inordertopreventthecenterfromadroptoomuchlinkedwithincreaseddistancetothechaintension.Thechainaxle-shaftcantileverused,intheendstretchofembeddedinthewallplate,intheshaftsurfacecarnutthreadedshaftwithitsfixationontheplate.第4页Keywords：Chaindrive、Chaintension、Threereducer1绪论