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1、毕业设计(论文)矿井提升机电控系统原理设计摘要我国矿井提升机大多是采用交流异步电机拖动,其电气控制系统采用转子串、切电阻调速,由继电器-接触器构成逻辑控制装置。本文以安全、可靠、高效、经济为出发点,以可靠性原则为依据,对矿井交流提升机电控系统进行研究设计,由可编程控制器(PLC)代替继电器-接触器构成的逻辑控制装置。其中简单介绍了国内外矿井提升机发展概况,提升机机械结构、工作原理,分析了其技术经济性。对于PLC的控制原理及应用做了一般性的介绍。详述了提升机电控系统和调速原理,如:测速部分和保护部分。本文以TKD-NT单绳缠绕式矿井提升
2、机为例,提出了研究设计方案,并且在实践中成功实施。PLC电控系统实现了对提升过程的程序控制,精度高;实现了速度、电流以及矢量的数字交换等,对提升机进行闭环调节;实现行程、速度等重要参数及提升状态的监视;实现无触点控制,寿命长,可靠性大大提高,具有良好的控制监视系统;实现了显示、记录等有关数据的全部自动化。关键词:矿井交流提升机,PLC,调速,电控技术研究29毕业设计(论文)THEDESIGNOFELECTRICCONTROLSYSTEMBASEDONMINEELEVATORABSTRACTInChina,mineelevatorwho
3、seelectriccontrolsystemusesspeedregulationbymeansofstringingandslicingtherotorresistance,anditconstitutesthelogiccontroldevicebytherelayandcontactoradoptingthemeansofthedriveofACasynchronousmotorinmostcases.ThispaperwhichstudiesanddesignstheelectriccontrolsystemofACmine
4、elevator,adoptingPLCwhichtakestheplaceofthelogiccontroldeviceconstitutedbytherelayandcontactortakesthesecurity,reliability,highefficiency,economyasastartingpoint,andtakesthereliabilityprincipleasthebasis.Thereinto,thispapergivesabriefintroductiononthedevelopmentofmineel
5、evatorinhomeandabroad,itsframeworkandtheory,whiledoingsomeeconomicstudy.Then,itintroducesthetheoryandapplicationofPLCsimply.Ontheside,itgoesintoparticularsaboutelectriccontrolsystem,forexample,speedmeasurementandsafeguard.ThispapersetsTKD-NTelevatorforanexample,proposes
6、theresearchanddesignplanwhichputsinpracticesuccessfully.TheelectriccontrolsystembasedonPLChascarriedouttheprocedurecontrolofhoistprocessandhighaccuracy,closed-cyclecontrolofmineelevatorthroughspeed,electriccurrentaswellasdigitalswitchingofvectorandsoon,themonitorofimpor
7、tantparameterssuchasthedistanceoftravel,speed,thestateofhoist.Inaddition,thesystemalsohascarriedoutcontactlesscontrol,longlife-span,reliabilitygreatlyimproved,goodcontrolsupervisorysystemandcompletelyautomationofrelevantdata’sdemonstration,recordingandsoon.KEYWORDS:ACmi
8、neelevator,PLC,speedregulation,electriccontroltechnologyresearch29毕业设计(论文)目录前言1第1章国内外矿井提升机发展概述2§1.1国外矿井提升机现状2§