机械毕业设计493大倾角皮带输送机(4)

I摘要随着大倾角带式输送机向大角度、长距离、高速度、大功率方向发展，除驱动装置外，张紧装置是保证输送机正常启动、运行、制动、和停车的不可缺少的重要部件之一，直接影响带式输送机的安全可靠性和稳定性。大倾角皮带输送机可沿水平或倾斜线路运行，一般使用光面输送带，靠所运物料与输送带之间的摩擦力，带动物料一起运行，因而工作倾角受限制。向上一般不超20°，向下的倾角还要小些。为了能在更大的倾角上使用，节省材料及节省占地面积，增大皮带输送机倾角有着重要的意义。本设计从大倾角皮带输送机的整体结构出发，对大倾角皮带机结构作了详细的论述。在皮带机起动阶段，能够在准确的时间开启皮带机；启动完毕后正常运行。此设计的特点是：可靠性高、倾角大、输送能力强等。关键词：大倾角皮带输送机；液压拉紧装置；传动系统IIAbstractWiththebiganglebeltconveyortothewide-angle,longdistance,highspeed,high-powerdirection,inadditiontodrivingdevice,thetensioningdeviceisnormallytheconveyorstart,run,brake,andstoppinganimportantandindispensablePartoneofadirectimpactonthesafetybeltconveyorreliabilityandstability.Inclinedbeltconveyorcanberunalongthehorizontalorinclinedlines,thegeneraluseofsmoothconveyorbelt,transportedbythefrictionbetweenthematerialandtheconveyorbelttobringtogethermaterialstorun,andthereforerestrictedtheworkofinclination.Upgenerallydoesnotexceed20°,dipdownevensmaller.Inordertouseagreaterinclinationtosavematerialsandtosaveareaandincreasetheangleconveyorbeltofgreatsignificance.Thedesignofinclinedbeltconveyorfromtheoverallstructuretothestructureoflargeanglebeltwerediscussedindetail.Inthebeltmachinestart-upphase,toopenattheexacttimeofbeltconveyor;startafterrunning.Thisdesignfeaturesare:highreliability,dipangle,transmissioncapacityandstrong.Keywords:highanglebeltconyeyer；hydraulicrobotstretcher；transmissionsystem；III目录摘要...........................................................IAbstract.......................................................III第1章绪论.....................................................11.1设计目的与意义..........................................11.2大倾角皮带输送机国内外发展状况.........................11.2.1国内发展情况......................................11.2.2国外发展情况......................................21.3本文设计研究的主要内容..................................2第2章大倾角皮带输送机总体方案的确定..........................32.1设计方案及主要参数的确定................................32.1.1大倾角皮带输送机主要的参数确定...................32.2方案对比................................................32.2.1滚筒布置方案确定..................................32.2.2带式输送机驱动组合................................42.2.3拉紧装置方案确定..................................5第3章大倾角皮带输送机结构设计.................................63.1输送带宽度校核..........................................63.2圆周驱动力与驱动功率....................................83.3输送带张力计算.........................................123.4电动机功率的确定.......................................17第4章大倾角皮带输送机主要部件的设计.........................184.1改向滚筒结构设计.......................................184.2输送带层数计算.........................................284.3拉紧力和拉紧行程的计算.................................294.4液压缸的设计...........................................304.4.1液压缸内径D和活塞杆直径d的确定................304.4.2液压缸壁厚和外径的计算..........................314.4.3缸底厚度.........................................32IV4.4.4连接零件的强度计算...............................33第5章大倾角皮带输送机主要零件的选型.........................345.1电动机的确定...........................................345.2液离耦合器的选用.......................................345.3联轴器的选用...........................................355.4托辊的选取.............................................355.4.1托辊的选型方法...................................355.4.2校核辊子载荷.....................................355.4.3托辊的额定负荷和最大转速........................395.5输送带.................................................405.6支架类装置.............................................405.6.1头架.............................................405.6.2中间架及支腿选型.................................415.6.3尾架.............................................425.7输送带跑偏故障..........................................445.7.1输送带跑偏故障原因...............................445.7.2输送带打滑故障...................................455.7.3输送带纵向撕裂及老化开裂故障....................456.1.4输送带断带故障...................................46结论..........................................................47致谢..........................................................48参考文献........................................................49VCONTENTSAbstract..................................................................................................................IChapter1Introduction.............................................11.1Thepurposeandsignificanceofadesign.......................11.2InclinedbeltconveyorDevelopmentofadomestic...............11.2.1Anddomesticdevelopmentsinaninclinedbeltconveyor....11.2.2Foreigninclinedbeltconveyorthedevelopmentof.........21.3Designofthemaincontentsofthisarticle......................2Chapter2inclinedbeltconveyortodeterminetheoverallscheme.........32.1Thedesignandmainparametersdeterminethe..................32.1.1Inclinedbeltconveyortodeterminethemainparametersof..32.2Comparisonprogram.......................................32.2.1DeterminetherollerLayout............................32.2.2Beltdriveportfolio...................................42.2.3Tensioningdeviceprogramtodetermine..................5Chapter3inclinedbeltconveyorstructuredesign......................63.1BeltwidthCheck..........................................63.2Thecircledriveandthedrivepower............