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4--LB半喂入联合收割机总体设计摘要本文查阅了大量谷物联合收割机相关资料，对谷物联合收割机的发展历程、现状和趋势做了论述。经过分析对比，对4LB-1.3联合收割机进行了总体设计，包括整体结构设计、割台和拨禾装置及输送行走装置和脱粒装置的选型、传动方式、主要性能参数和结构参数计算、传动机构分析和计算。对偏心拨禾轮进行了具体设计和计算。该机采用自走，可一次性完成收割、脱粒、分离作业。本机器通过能力与适应能力均良好，能够在泥水深度不大于25cm的稻田中完成的正常收割任务。脱粒装置为半喂入轴流式，脱净率高、破碎率低，分离性能好。整机结构简单、制造成本低、可稻麦两用。关键词:自走式；联合收割机；总体设计；传动装置4--LB半喂入联合收割机总体设计AbstractThisthesisconsultsalotofgraincombinerelateddata,discussedthedevelopmentcourseofgraincombineharvester,statusandtrend.Afteranalysisandcomparison,the4LB-1.3combinetheoveralldesign,includingtheoverallstructuredesign,theheaderandthereeldeviceandaconveyingwalkingdeviceandathreshingdeviceselection,modeoftransmission,themainperformanceparametersandstructureparameters,transmissionmechanismanalysisandcalculation.Theeccentricreelwascalculatedandthespecificdesignand.Thismachineadoptsselfwalking,cancompleteharvesting,threshing,separatingoperation.Thepassingabilityandgoodadaptabilityinthemud,thedepthisnotmorethanthenormaloperationscanbe25cminpaddyfield.Threshingdeviceforsemifeedingaxialflowtype,highthreshingrate,lowbreakingrate,goodseparationperformance.Themachinehastheadvantagesofsimplestructure,lowmanufacturingcost,riceandwheatdual-purpose.Keywords:selfpropelled;combine;overalldesign;transmissiondevice4--LB半喂入联合收割机总体设计1目录摘要..........................................................................................................................11绪论....................................................................................................................22水稻联合收割机总体设计及工作原理...........................................................52.1谷物收获机械应满足的技术要求..............................................................................52.2联合收割机的设计类型..............................................................................................52.3联合收割机结构配置及悬挂......................................................................................52.4水稻联合收割机的工作流程......................................................................................62.5割台部分......................................................................................................................72.5.1切割机构...........................................................................................................72.5.2拨禾轮...............................................................................................................82.5.3卧式输送带.........................................................................................................92.5.4拨禾轮、割台、输送装置的相互布置.........................................................102.6夹持链输送装置........................................................................................................102.7脱粒装置....................................................................................................................112.8分离集谷输送装置....................................................................................................122.9履带行走装置..............................................................................................................122.10车架的选择................................................................................................................132.11机器总体配置..........................................................................................................133参数设计与选择..............................................................................................143.1发动机的选择............................................................................................................143.2收割机的参数设计....................................................................................................153.3功率计算....................................................................................................................174传动机构分析及计算.....................................................................................194.1各部分传动................................................................................................................204.2收割各部分机构转速计算........................................................................................214.3各部分带轮的选择......................................................................................................234.3.1第一级输出带轮设计...........................................................................................234.4各部链传动..................................................................................................................264.4.1第一级链轮设计..................................................................................................264.4.2传入夹持链动力链的设计....................................................................................27致谢........................................................................................................................304--LB半喂入联合收割机总体设计21绪论水稻是中国主要粮食作物之一，种植面积近3000万公顷，约占世界水稻种植面积的五分之一，产量占世界稻谷总产量的三分之一1统计。我国水稻主产区主要在南方，我国南方15省、市、县把推广水稻种植、收获机械化当作确保食品安全、促进劳动力向城市转移、增加农村人口收入、改善农业生产工作条件、建设和谐社会的重要工作，这也为水稻收获机械化发展创造了很好的条件呢。南方水田多位于丘陵、梯田等地方，地区季节性、收获环境相差较大，这对水稻收获机械化的适应能力和可靠程度提出了更高的要求。水稻联合收获机械一般使用全喂入和半喂