秸秆打包机毕业设计外文文献

秸秆打包机毕业设计外文文献

ID:28298037

大小:72.07 KB

页数:5页

时间:2018-12-09

秸秆打包机毕业设计外文文献_第1页
秸秆打包机毕业设计外文文献_第2页
秸秆打包机毕业设计外文文献_第3页
秸秆打包机毕业设计外文文献_第4页
秸秆打包机毕业设计外文文献_第5页
资源描述:

《秸秆打包机毕业设计外文文献》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、StrawbalepressAbalerisapieceoffarmmachineryusedtocompressacutandrakedcrop(suchashay,straw,orsilage)intocompactbalesthatareeasytohandle,transportandstore.Severaldifferenttypesofbalersarecommonlyused,eachproducingadifferenttypeofbales一rectangularorcylindrical,of

2、varioussizes,boundwithtwine,netting,orwire.Industrialbalersarealsousedinmaterialrecyclingfacilities,primarilyforbalingmetal,plastic,orpaperfortransport.RoundbalerThemostfrequentlyusedtypeofbalerinindustrializedcountriesisthelargeroundbaler.Itproducescylinder-s

3、hapednroundHor’Tolled"bales.Grassisrolledupinsidethebalerusingrubberizedbelts,fixedrollers,oracombinationofthetwo.Whenthebalereachesapredeterminedsize,eithernettingortwineiswrappedaroundittoholditsshape.Thebackofthebalerswingsopen,andthebaleisdischarged.Thebal

4、esarecompleteatthisstage,buttheymayalsobewrappedinplasticsheetingbyabalewrapper,eithertokeephaydrywhenstoredoutsideorconvertdampgrassintosilage.Variable-chamberbalerstypicallyproducebalesfrom48to72inches(120to180cm)indiameterandupto60inches(150cm)inwidth-Theba

5、lescanweighanywherefrom1,100to2,200pounds(500to1,000kg),dependinguponsize,material,andmoisturecontent.OriginallyconceivedbyUmmoLuebbenscirca1910,thefirstroundbalerdidnotseeproductionuntil1947,whenAllis-ChalmersintroducedtheRoto-Baler.Marketedforthewater-sheddi

6、ngandlightweightpropertiesofitshaybales,AChadsoldnearly70,000unitsbytheendofproductionin1960.Thenextmajorinnovationcamein1972,whentheVermeerCompanybegansellingitsmodel605-thefirstmodernroundbaler.Previously,roundhaybaleshadbeenlittlemorethanlumpsofgrasstiedtog

7、ether,buttheVermeerdesignusedbeltstocompacthayintoacylindricalshapeasisseentoday.LargerectangularbalerAnothertypeofbalerincommonuseproduceslargerectangularbales,eachboundwithahalfdozenorsostringsoftwinewhicharethenknotted.Suchbalesarehighlycompactedandgenerall

8、yweighsomewhatmorethanroundbales.IntheprairiesofCanadatheyarecalledprairieraptors.SmallrectangularbalerAtypeofbalerwhichislesscommontodayinsomeplacesbutwhichisstillprevalentinmanyc

当前文档最多预览五页,下载文档查看全文

此文档下载收益归作者所有

当前文档最多预览五页,下载文档查看全文
温馨提示:
1. 部分包含数学公式或PPT动画的文件,查看预览时可能会显示错乱或异常,文件下载后无此问题,请放心下载。
2. 本文档由用户上传,版权归属用户,天天文库负责整理代发布。如果您对本文档版权有争议请及时联系客服。
3. 下载前请仔细阅读文档内容,确认文档内容符合您的需求后进行下载,若出现内容与标题不符可向本站投诉处理。
4. 下载文档时可能由于网络波动等原因无法下载或下载错误,付费完成后未能成功下载的用户请联系客服处理。