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防窜仓往复式给煤机设计说明书毕业论文.doc

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防窜仓往复式给煤机设计说明书毕业论文.doc

第1页目录1.绪论.....................................................11.1往复式给煤机............................................11.2往复式给煤机防窜仓装置的设计研究........................21.2.1方案构思........................................21.2.2工作原理........................................21.3K4型给煤机的技术改造...................................31.3.1存在的问题......................................31.3.2改进措施.......................................31.3.3经济效益........................................52.电动机和减速器的选用.....................................62.1位移分析...............................................62.2速度分析..............................................72.3加速度分析............................................72.4往复式给煤机的工作简述..................................92.4.1往复式给煤机的运行阻力...........................102.4.2往复式给煤机的运行阻力由以下公式计算.............102.4.3电动机功率的计算.................................112.5电动机的选型...........................................122.6减速器的传动比.........................................132.7减速器的选用............................................133联轴器的选型................................................153.1联轴器的转矩...........................................153.2联轴器的理论转矩计算...................................163.3联轴器的计算转矩计算...................................163.4强度验算...............................................163.4.1抗剪强度验算....................................173.4.2压强验算........................................174辊轮轴的设计计算............................................184.1辊轮轴的设计计算.......................................184.2辊轮轴强度的校核.......................................225液压缸的设计................................................255.1料仓口的尺寸设计.......................................255.2液压缸的受力分析.......................................255.3液压缸的推力和速度.....................................265.4液压缸的主要尺寸计算...................................28第2页5.4.1液压缸内径及活塞杆直径的确定.....................285.4.2油液作用在单位面积上的压强......................285.4.3液压缸的理论作用力确定..........................295.4.4确定液压缸的壁厚................................305.4.5缸筒壁厚验算....................................305.5活塞杆的设计...........................................315.5.1活塞杆的结构、尺寸的确定........................315.5.2活塞杆的直径的强度校核..........................325.5.3活塞杆弯曲稳定性验算............................325.5.4活塞杆的结构....................................335.5.5活塞杆的材料和技术要求..........................345.6活塞杆的导向套、密封和防尘.............................355.6.1结构............................................355.6.2导向套的材料....................................365.6.3导向套长度的确定................................365.7活塞...................................................365.7.1活塞的结构型式..................................365.7.2活塞与活塞杆的连接...............................375.7.3活塞的密封.......................................375.7.4活塞的材料.......................................375.7.5活塞的尺寸及加工精度.............................385.7.6活塞的最小导向长度H及液压缸行程S的确定.........385.8液压缸油口直径0d的确定..................................385.9缸筒底部厚度计算........................................405.10液压缸的流量的确定.....................................445.11液压缸的密封...........................................456液压泵站的设计...............................................486.1液压泵的选用............................................486.2液压系统图的拟订........................................526.2.1液压回路的选择...................................526.2.2油箱选型.........................................536.3箱壁、清洗孔、吊耳、液位计..............................566.4阀的选型................................................587小结.........................................................60第3页7.1K式往复给煤机常见机械故障分析处理.....................607.1.lK式往复式给煤机构造原理......................607.1.2常见机械故障分析及处理措施.....................607.2结语.................................................60参考资料....................................................61英文翻译.....................................................62致谢......................................................70摘要往复式给煤机安装在煤仓下口处,在煤矿井下生产中,设置一定容量的煤仓对于保证消峰平谷和高产、高效是十分必要的。往复式给煤机由机架、底板(给煤槽)、传动平台、漏斗、闸门、托辊等组成。当电机开动后经弹性联轴器、减速机、曲柄连杆机构拖动倾料13°的底板在辊上作直线往复运动,煤均匀地卸到其他设备上。它可以有效地提高工作面采掘设备的利用率,充分发挥运输系统的潜力,保证连续均衡生产。但是,煤仓窜仓事故在我国煤矿经常发生。窜仓事故常造成设备严重损坏,井下停产,当窜仓煤量较大时,还会阻塞巷道,造成运输巷通风不畅,引起瓦斯爆炸等事故。为了防止和降低煤矿井下煤仓窜仓造成的设备损坏、人员伤亡、阻塞巷道和影响生产等危害,设计了一种用于往复式给煤机的防窜仓装置,从而为煤仓窜仓的防治提供了一个新的途径。关键词曲柄滑块机构煤仓窜仓防窜仓装置往复式给料机第4页ABSTRACTThereciprocationtypestokerinstallsinbunkertheendopeningplace,inthecoalminemineshaftproduction,theestablishmentcertaincapacitybunkerdisappearspeakPingguregardingtheguaranteeandthehighproduction,ishighlyeffectiveisextremelyessential.Thereciprocationtypestokerbytherack,theledgerwall,thetransmissionplatform,thefunnel,thestrobe,therequestrollerandsooniscomposed.Aftertheelectricalmachinerystartsaftertheflexiblecoupling,thespeedreducer,thecranklinkmotiongeardrivesleansthematerial13°ledgerwalltomakethestraightreciprocatingmotionontheroller,thecoalevenlyunloadstootherequipmenton.Itmayeffectivelyenhancetheworkingsurfaceexcavationequipmenttheusefactor,fullydisplaysthetransportationsystemthepotential,guaranteedcontinuouslybalancedproduces.But,bunkerfleesthewarehouseaccidentfrequentlytooccurinourcountrycoalmine.Fleesthewarehousemattersameasevertocreatetheequipmentmajordamage,themineshaftsuspendsproduction,whenfleesthewarehousecoalamountisbigger,butalsocanblockthetunnel,createstransportsthelanetoventilateimpeded,causesaccidentandsoongasexplosion.inordertopreventandreducecoalminecoalbunkerchannelingthewarehouseequipmentdamage,casualties,Roadwaycongestionandimpactproduction,andotherhazards,forthedesignofareciprocatingcoalchannelingantiaircraftpositionsdevices,forthecoalbunkerchannelingwarehousecontrolprovidesanewway.KeywordscoalbunkerchannelingwarehouseCoalAntichannelingdeviceswarehouse.

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