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盘刀式茎秆切碎机结构设计说明书.doc

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盘刀式茎秆切碎机结构设计说明书.doc

黑龙江工程学院本科生毕业设计1目录摘要....................................................................................................................................ⅠABSTRACT.....................................................................................................................Ⅱ第1章绪论...................................................................................................................11.1本研究的目的和意义.............................................................................................11.2农作物秸秆综合利用现状.....................................................................................21.3秸秆的特性............................................................................................................31.3.1秸秆的物理特性.........................................................................................31.3.2秸秆的切碎特性.........................................................................................41.3.3秸秆的化学成分.........................................................................................4第2章切碎机整体设计方案................................................................................52.1总体结构设计........................................................................................................52.2样机的性能试验....................................................................................................52.3本章小结................................................................................................................7第3章秸秆切碎机结构设计................................................................................83.1切碎器设计............................................................................................................83.1.1切碎方式选择.............................................................................................83.1.2切碎原理分析.............................................................................................93.1.3割刀参数分析...........................................................................................103.1.4主要技术参数确定...................................................................................113.2喂入机构设计......................................................................................................123.3传动系统设计......................................................................................................133.4本章小结..............................................................................................................14第4章盘刀式切碎器刀刃曲线对切割能耗的影响.......................................154.1切割过程几何参数的分析..................................................................................154.2试验设计..............................................................................................................16黑龙江工程学院本科生毕业设计24.3结果与分析..........................................................................................................164.4结论.......................................................................................................................174.5本章小结...............................................................................................................18第5章动刀片受力分析........................................................................................205.1工作原理..............................................................................................................205.2动刀片的受力分析..............................................................................................215.2.1直刃口动刀片的受力分析.......................................................................215.2.2圆弧刃口动刀片的受力分析...................................................................245.2.3动刀片的受力特性曲线...........................................................................255.3分析结果讨论.......................................................................................................265.4本章小结...............................................................................................................26第6章切碎机整体结构的设计............................................................................276.1电机选择...............................................................................................................276.1.1切碎器转速的确定...................................................................................276.1.2切碎器功率消耗.......................................................................................276.1.3电机选择...................................................................................................276.2V带传动的设计计算........................................................................................286.3传动零件设计计算..............................................................................................306.3.1圆柱直齿轮传动.......................................................................................306.3.2圆锥齿轮传动...........................................................................................346.3.3链轮传动...................................................................................................376.4轴的设计计算和轴系零件的选定......................................................................406.4.1输入轴的设计与计算...............................................................................406.4.2大齿轮轴的设计计算...............................................................................436.4.3大圆锥齿轮轴的设计...............................................................................436.4.4输出轴的设计...........................................................................................446.4.5轴承的校核...............................................................................................456.5浮动装置内弹簧的选用及计算..........................................................................466.6箱体设计计算......................................................................................................486.7本章小结..............................................................................................................48黑龙江工程学院本科生毕业设计3结论....................................................................................................................................49参考文献...........................................................................................................................50致谢....................................................................................................................................52摘要本研究以棉秆等硬茎秆为研究对象,通过对秸秆原料特性的分析,确定切碎原理和方法,设计出动力消耗低、粒度大小满足压缩成型要求的秸秆切碎机。推动我国目前综合开发利用农作物秸秆资源的技术创新和实际应用。通过对原始数据的分析、方案的论证比较和有关数据的分析计算,主要完成了切碎机的总体设计,电动机的选择以及传动方案的分析、比较与选择等内容。在此基础上对切碎机机体的结构尺寸、驱动转轴的结构尺寸、V带传动等设计应用价值进行了详细的计算和说明。该机主要是由切碎器、变速箱和喂入机构、喂入槽、甩抛装置、带传动、电动机组成。其原理是秸秆由喂入槽喂入,在喂入机构作用下将其压实并卷入机构,被动定刀片组成的切碎器切碎,最后由抛送装置抛出机外。关键词盘刀,切碎机,茎秆,喂入槽,抛送机黑龙江工程学院本科生毕业设计4ABSTRACTInthisstudy,hardcottonstalkstalkastheresearchobject,throughthestrawrawmaterialscharacteristicanalysis,determinethecuttingprincipleandmethodofdesign,lowpowerconsumption,particlesizetomeettherequirementsofthechoppedstrawcompressionmoldingmachine.Promoteourcountrythecomprehensiveexploitationandutilizationofcropstrawresourcesintechnicalinnovationandpracticalapplication。Throughtheanalysisontheoriginaldata,programevaluationdatacomparisonandanalysisofthecalculation,mainlytocompletetheshreddingmachineoveralldesign,thechoiceofmotordriveandprogramanalysis,comparisonandselection.Onthebasisoftheshreddingmachinestructureofthebodysize,structuresizedriveshaft,suchasVbeltdrivedesignvaluearecalculatedindetailanddescription.Themachineismainlycomposedofcutter,gearboxandafeedingmechanism,feedingtrough,spinoffdevice,beltdrive,motor.Theprincipleisthatthestrawfromthefeedingchutefeeding,inthefeedingmechanismundertheactionofthecompactionandinvolvedmechanism,passivefixedbladeconsistsoftheshreddershredding,finallybythrowingdevicethrowingmachineKeywordsRadialknife,cutter,stalk,feed,thrower

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