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当前位置:首页 > 商业/管理/HR > 质量控制/管理 > 小型牧草割压机拨禾轮的设计与试验研究
20150,,:;;;,[1]。,。,,。1,,。1.1(1)、、,、、、,,,,,:2012()(201203024);(1105NCNA095);2012(2012GS05590);(GNCX-2013-39):“、”。:2014-12-29:2015-03-05doi:10.3969/j.issn.1673-3142.2015.07.006,,(730070)[]、,。,:3.17,500mm,121r/min,165mm,。,,:1.26%,4.46%,,。[];;;;[]S817.11[]A[]1673-3142(2015)07-0026-04DesignandExperimentalResearchontheReelofSmallForageCuttingFlatteningMachineMaShilun,ZhaoChunhua,ChenKai(CollegeofEngineering,GansuAgriculturalUniversity,LanzhouCity,GansuProvince730070,China)[Abstract]Aimingatthepresentproblemsofpoorforagedialingperformanceandhighlossratebysmallforagecuttingflatteningmachinereel,atypeofreelsuitableformountainwalkingforagecuttingflatteningmachineisdesigned,testedandstudied.Byanalyzingthetrajectoryofthecuttingflatteningmachinereel,itsmaintechnicalparametersaredetermined:wheelspeedratiois3.17,reeldiameteris500mm,reelspeedis121r/min,thepitchis165mm,allconformingtotherequirementsofreelworking.Onthisbasis,fieldcontrasttestsareconductedtothetwokindsofreelsdesigned,andtheresultsshowthattheaveragelossratebyeccentricreeltakingbackis1.18%,andthatbypressureplatetypereelis4.05%,therefore,eccentricreelisdesignedmoresuitableforwalkingmountaingrasscuttingflatteningmachineoperationthanthepressureplatetypereel.[Keywords]grasscuttingflatteningmachine;reel;headerloss;lossratebyreeltakingback;test1.2.3.4.5.1Fig.1PressureplatetypereelAGRICULTURALEQUIPMENT&VEHICLEENGINEERING537Vol.53No.720157July201512345537,,。1.2(2)、、、、、、[2]。,,,,,,[3]。,。22.1,,V1V2,V1/V2=λ,λ。λ1,(3),。λ,,λ[4]。:λ,,。λ,,[5]。V2,λV1。:3m/s,,,V1=3m/s[6]。λ1.2~2.5,λ,3.17。2.2:(1)0;(2),1/3()[7]。,R=Rsinα+13(L-h)(1):R———,mm;L———,400~800mm;h———,70mm;α———,°。sin坠=1λ(2)D=2λ(L-h)3λ(λ-1)(3):D———,mm;λ———;L———,400~800mm;h———,70mm。D=440~973mm。,,,,D=500mm。2.36.3kW。3。10.5m/s,21m/s,31.5m/s。,。V1V2=λ(4)V2=nπD60(5)1.2.3.4.5.2.Fig.2Mechanismofeccentricdialreel124533λFig.3Reeltrajectorywithdifferentλvalueλ<1λ>1λ=1λ′=0λ=∞OH+h:272015:n———,r/min;D———,m;V2———,m/s;λ———。(4)(5),,V1=3.17m/s,121r/min.2.4,,,,。,H=L+Rλ+I-h(6):H———();L———;R———;λ———;I———;h———。(6),10mm,H=600mm,。2.5,。,,,;,,。,,。bmax=D2λλ2-1姨(7):bmax———,mm;D———,mm;λ———。D=500mm,λ=3.17(7)bmax=26.1mm。,26.1mm,。2.6,,,,0.1~0.6m。Xz=TVZ=πDZλ(8):T———,s;Z———;V———,m/s;D———,m;λ———。(、、),。,。Z=3,(8),Xz=0.165m,。2.7。NB=BPVp×10-3(9):P———,N/m,25~40N/m;B———,m;VB———,m/s。9GY-1.2,B=1.2m。3,(11m/s,22m/s,33m/s),(9),0.03~0.144kW。,。3,,。GB/T5256-2008《》[8]、JB/T9700-2013《》[9]、JB/8836-2004《》[10]、JB/T6287-2008《》[11]GB/T10940-2008《》[12]9GY-1.2。、、、、,1。,。,,28537:。,[13]。,。:1m,1.2m;(),。3,1.2m230mm,1×1.2,。2、3。3.1(23),1.26%;4.46%,,,,,。4,,,,,。,,。,。,9GY-1.2。[1].[M].:,2003.[2].[M].:,2007.[3].9GBQ-3.0[D].:,2012.[4],,,.[J].,2014,4(3):113-117.[5].[D].:,2008.[6].[J].,2009,31(11):93-95.[7],,.[J].,2010,32(12):141-145.[8]GB/T5256-2008,[S].[9]JB/T9700—2013,[S].[10]JB/8836-2004,[S].[11]JB/T6287-2008,[S].[12]GB/T10940-2008,[S].[13].[D].:,2008.(1989—),,,,。E-mail:1012619503@qq.com(1972—),,,,,。1Tab.1Alfalfatestconditions5.64/Pa11.62/mm626/·m-2476/%78.32Tab.2Lossratebyeccentricreeltakingback/m2/g/g/%11.28.88001.1021.212.410201.2031.214.611501.2641.217.812781.4051.215.612301.2661.220.014801.353Tab.3Lossratebyordinarypressureplatetypereeltakingback/m2/g/g/%11.2369323.8621.24811234.2031.25212704.1041.25011804.2051.26012504.8061.27413055.6029
本文标题:小型牧草割压机拨禾轮的设计与试验研究
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