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十吨位桥式起重机起升机构设计说明书[带图纸].doc十吨位桥式起重机起升机构设计说明书[带图纸].doc -- 45 元

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无锡太湖学院毕业设计(论文)题目十吨位桥式起重机起升机构设计信机系机械工程及自动化专业学号学生姓名指导教师(职称讲师)(职称)2013年5月25日III摘要起重机是用来对物料做起重、运输、装卸和安装等作业的机械设备,它可以减轻体力劳动、提高劳动生产率和在生产过程中进行某些特殊的工艺操作,实现机械化和自动化。起升机构包括电动机、制动器、减速器、卷筒和滑轮组。电动机通过减速器,带动卷筒转动,使钢丝绳绕上卷筒或从卷筒放下,以升降重物。本文就十吨桥式起重机起升机构做设计计算,确定起升机构传动方案,确定起升机构工作级别,对起升机构的主要部件卷筒、钢丝绳、滑轮等钢丝绳卷绕系统,电动机、联轴器、减速器等驱动装置进行设计计算,验证卷筒壁压应力,卷筒应力,确定吊钩装置构造方案,吊钩横梁,滑轮轴的计算等。对起升机构运行的过程,包括起升速度、起升和制动时间进行计算和验算。关键词传动方案卷绕系统驱动装置起升运行IVAbstractCraneisusedtostartheavymaterials,transportation,handlingandinstallationofmachineryandequipmentandotheroperations,whichcanreducemanuallabor,improvelaborproductivityandintheproductionprocessforsomespecialprocessoperation,mechanizationandautomation.Liftingmechanismincludesamotor,brake,reducer,drumandpulley.Motorthroughreducer,drivingdrumrotation,sothatthewireropearoundthedrumorfromarolldowntoliftheavyloads.Inthispaper,tentonscranehoistingmechanismtodothedesigncalculationstodeterminethetransmissionschemeliftingmechanism,hoistingmechanismtodeterminetheworkinglevelofthemaincomponentsofthehoistingmechanismdrum,wirerope,wireropewindingsystempulleys,motors,Unitedcoupling,reducerdrivesthedesigncalculations,validationreelwallstress,stressreel,hookdeviceisconfiguredtodetermineprogram,hookbeams,pulleyshaftcalculation.Hoistingmechanismforrunningprocesses,includingtheliftingspeed,liftingandbrakingtimecalculationsandchecking.KeywordstransmissionschemewindingsystemdriveliftingoperationV目录摘要.............................................................................................................................................IIIAbstract.........................................................................................................................................IV目录................................................................................................................................................V1绪论...........................................................................................................................................11.1桥式起重机的简介..............................................................................................................11.2起重机械的发展..................................................................................................................21.3起重机械的特点..................................................................................................................22起升机构主要部件的设计计算.................................................................................................42.1主要参数...............................................................................................................................42.2确定起升机构传动方案.......................................................................................................42.3确定吊钩和滑轮组..............................................................................................................52.4钢丝绳的计算......................................................................................................................62.4.1钢丝绳所受最大拉力....................................................................................................62.4.2钢丝绳允许的偏斜角....................................................................................................72.5卷筒的计算..........................................................................................................................82.5.1卷筒材料........................................................................................................................82.5.2卷筒直径计算................................................................................................................82.5.3卷筒长度........................................................................................................................82.5.4卷筒壁压应力验算........................................................................................................82.5.5卷筒应力验算................................................................................................................92.6绳端固定装置的计算........................................................................................................102.7取物装置............................................................................................................................122.7.1确定吊钩装置构造方案..............................................................................................122.7.2吊钩主体结构的主要尺寸的计算..............................................................................122.7.3吊钩强度验算..............................................................................................................132.7.4吊钩弯曲部分断面AA强度验算.............................................................................132.7.5吊钩弯曲部分断面BB强度验算.............................................................................142.7.6推力球轴承的选择......................................................................................................142.7.7吊钩横梁的计算..........................................................................................................152.7.8滑轮轴的计算..............................................................................................................162.7.9拉板的强度校核..........................................................................................................173起升运行机构设计...................................................................................................................193.1力矩的计算........................................................................................................................193.1.1平稳上升阶段..............................................................................................................193.1.2平稳下降阶段..............................................................................................................203.1.3上升起动阶段..............................................................................................................20VI3.1.4下降制动阶段..............................................................................................................223.2电动机的选择....................................................................................................................223.2.1电动机的功率确定......................................................................................................223.2.2验算电动机发热条件..................................................................................................233.3减速器的选择....................................................................................................................233.3.1减速器传动比..............................................................................................................233.3.2减速器的选取..............................................................................................................233.3.3输出轴强度校核..........................................................................................................233.4起升速度和实际所需功率................................................................................................243.4.1实际速度......................................................................................................................243.4.2实际功率......................................................................................................................243.5制动器的选择....................................................................................................................243.6起升和制动时间验算........................................................................................................253.6.1起动时间验算..............................................................................................................253.6.2制动时间验算..............................................................................................................263.7.1疲劳计算......................................................................................................................263.7.2强度验算......................................................................................................................274总结与展望...............................................................................................................................294.1总结....................................................................................................................................294.2展望....................................................................................................................................29致谢...........................................................................................................................................30参考文献.......................................................................................................................................31
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