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ID:28136369
大小:1.11 MB
页数:47页
时间:2018-12-07
《毕业设计(论文)-汽车起重机结构设计论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、汽车起重机结构设计摘要6.3吨汽车起重机属于架型起重机,它将起重和运输相结合,不仅节省劳动力,而且极大的减小了工作强度、提高了工作效率。本次毕业设计在6.3吨随车起重机上首次采用了伸缩臂型结构,并对起重机臂进行了优化设计。它具有结构紧凑、易于操作的特点,可广泛用于交通运输、港门、仓库、以及所有中小型工业货物装卸与远距离运输之中。起升机构包括液压马达、减速机、棘轮停止器和卷筒。减速机用來降低液压马达驱动速度,卷筒用于绕进或放出钢丝绳。机构工作时,液压马达驱动减速机,减速机的低速轴带动卷筒,将钢丝绳卷上或放出,经过滑轮组系统使载荷实现上升或下降,其升降
2、由马达的旋转方向而定,通过棘轮停止器实现制动。起重臂采用伸缩式、箱形结构。箱形结构内装有伸缩油缸,臂的每个外节段内装有滑块支座,因此起重机的变幅可通过液压缸实现。为Y减轻吊臂B重,充分发挥钢材的作用,吊臂的不同部位采用不同强度的钢材。回转机构由回转支承装置和回转驱动装置组成。即一对脂润滑的回转支承装置、蜗轮旋杆减速机和液压马达。这种结构自重轻、受力合理、运行平稳,可以使机构在水平面内运输货物。关键词:汽车起重机;起升机构;起重臂;回转机构;回转支承;Abstract6.3TruckMountedCrane(abbreviationTMC)belon
3、gstoboom-Crane.Itcombinestheadvantages.Soitcangreatlydecreaselaborintensity,increaseworkingIuseflexibleboominTMCforthefirsttimeandhaveaoptimizationdesign.Thisproducthasfeaturesofcompactstructure,easyoperation.Itissuitableforwideuseintraffictransportantion,dockwarehouseandallsm
4、all-sizedindustriesforgoodsloadingloadingandunloadingandlongdistancetransportation.Themaintaskofthisdesignistodecidethemechanicalpartincludingmaterialselected,principledecided,transmissionandservo-motorchoosedandsoon.Thewinchmechanismconsistsofhydraulicmotor,reducer,ratchetwhe
5、elstopandwinchdmm.Reducerlowersthespeedofhydraulicmotorfordrivingthewinchdrumtowindorunwindtheloadhoistingwirerope.Whenworking,themotordrivesreducerandbringalongwinchdrumrotation,thenthewireropeiswoundorunwound,theloadwillbeliftorloweredthroughpulleyblocksystem.Liftingorloweri
6、ngoftheloadwillbecontrolledbytherotationdirectionofthemotor.Ratchetwheelstopisusedtostopthemotionofthedrum,holdingtheloadintheair.Theboomadoptsflexibletypeandbox-shapedstructure.Cylinderbodiesarefittedontheboom.Thereareslidesupportsatoutsidesofeverysectionofbooms.Theworkingran
7、geofTMCcanoutsidesofeveryarefittedontheboom.Thereareslidesupportsatoutsidesofeverysectionofbooms.TheworkingrangeofTMCcanberealizedbytheextensionorretractionofcylinderbody.Itusesdifferentsteelproductsindifferentpositionsfordecreasingboom’sweightandfullydevelopingsteelproducts’f
8、unction.Swingmechanismcontainsswingbearingandswingdriver,thes
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