螺旋钻采煤机钻杆的结构参数优化设计.pdf

GG!9李建平,张永忠,杜长龙(Sv,null221008)Knull1:在对螺旋钻杆的输煤机理进行分析研究的基础上,选择螺旋钻杆输煤生产率作为优化设计的目标,以钻杆叶片内径a钻杆工作转速a叶片螺旋升角和导程为设计变量,同时考虑了块煤率a浮煤量和单位能耗等因素的影响,建立了数学模型b1oM:螺旋钻采煤机；钻杆；优化设计ms|:TD421null6nullnullnullDS:AnullnullnullcI|:0253-2336(2006)08-0008-03OptimizeddesignofdrillingrodstructureparameterforscrewminerLIJian-ping,ZHANGYong-zhong,DUChang-long(ChinaUniversityofMiningandTechnology,Xuzhounull221008,China)Abstract:Baseontheanalysisandresearchoncoalconveyingmechanismofthescrewdrillingrods,thecoalconveyingratewasselectedasthetargetoftheoptimizeddesign.Accordingtotheinnerdiameterofthebladefordrillingrods,theworkingrotaryspeedofthedrillingrods,thescrewingupangleofthebladeandthestrokeasthevariationofthedesignandinconsiderationoftheinfluencesofthelumpcoalrate,floatcoalquantity,unitenergyconsumptionandotherfactors,amathematicsmodelwasestablished.Keywords:screwminer；drillingrod；optimizeddesignnullnullGB?%7a4q!bFhG,GhGB,iYVG|,TbGUim1Ub图1null螺旋钻机采煤示意nullnullGGLCyG1q,Gd=Gh.,s.TGhaebGh/9YVG_bGV,M*,/=QbyN!9GH,VZIn,YV!9,4,?r4vqrTbGs$,4G3qT!9S,G=aGTa=6!9M,HInvqa?yY,y,PG!9T?T1pb1nullGnullnull!SahbLr)RMTbGnullH,MVm2pb=OLv0=rnullVOOAVU,Z_OMLZ_；MMM,OLMLZ_,VOABVUbIn=H,5MvnOELZ_,VOOBVUb=,RMvZ_ELBnullbvs,5VR_v1v2bv1,7v25EbnullnullRMms,V9_Mq:v1=Ln60cos2null(1-nulltannull)(1)8348nullnullnullnullnullnullnullnullnullnullnullnullnullS/nullnullnullnullnullnullnullnullnullnullnullnullnullnullnull2006M8图2null煤颗粒运动速度分析TnullLnullnullnull=,m；nnullnullnullG,r/min；nullnullnullnullO6,(null)；nullnullnullnull=Wy,null=tannull；nullnullnullnull,(null)b2nullGnullnulls$,G3qSf,YVMT!9M,BHq/!9,G!9Tb2null1nullG3q9nullnullG3qQQ=60vpSKc(2)TnullKcnullnullnullA；SnullnullnullGKvV?,m2；vpnullnullnullG_,m/sbnullnullG_V=(6nullc(nullc=nullg+nully2)vpe9,nullgnully=a6bT(1):vp=Lncosnullg+nully260cosnullcosnullg+nully2+null(3)nullnullGKvV?SS=null4(D2y-D2g)1-mnullLcosnullc(4)5Q=null4(D2y-D2g)Lcosnullg+nully2-mnullnullnKccosnullg+nully2+nullcosnull(5)T,Dy,Dg,nullsY=a=a,m；m=hbnullnullT(5)V,YQ10,m,nullVG5；DyVGh_%；Kc,nullV?；Dg,n,L,nully,nullg5,!9H,|T!9M,5!9MXVVU:X=x1nullx2nullx3nullx4nullx5T=DgnullnnullLnullnullynullnullgTnullnullG3qQXf,V/T/G3qNSf:min-F(x)=-null4(D2y-x21)x2Kcnullx3cosx4+x52-mnullcosx4+x52+nullcosnull(6)2null2nullHqy(1)=DgHqb=bW,V,GHhlG=,V9vbW,43qb=hl,9v,yN=Bwi0null3DynullDgnull0null4Dy5nullnullg1(x1)=0null3Dy-x1null0g2(x)=x1-0null4Dynull0nullnull(2)GTnbRG,P3BFbGVBH,R30,nullnull/2-nullby=Dg)6nullgKv,7)R_v1Kl,#nullgnull/2-nullbnullnull=ynull=0null58,7null=tannull,NV=null=30null,#=Dg)6nullgAl60nullbLlV,G=6nullgB2545nullS=1abnullnullG=SB0null3Dy0null4Dy,7BG=B,yN,=6nully|B822null,g4(x)=x4-22null0g5(x)=8-x4null0g6(x)=x5-45null0g7(x)=25-x5null0nullnull(4)=LHqbGV,InsWs5,；1PV?v_,H,1P_V?v,v2nullv1,|T(1):Lnull2nullrtan(null/4-null)nullnull=),2r=Dy,TV:LnullnullDytan(null/4-null)nullnullH,P=WbW?7$vv5,=W:Lcosnullcmnull0null250null4mnullnull=1:1null0null2Lm(Dy-Dg)null4null45nullnullg8(x)=x3-nullDytan(null/4-null)null0g9(x)=0null4m-x3cosx4+x52null0g10(x)=m(Dy-x1)-2x3null0g11(x)=x3-2null2m(Dy-x1)null0nullnull(5)Tb=i)M,L=nullDytannully()L=nullDgtannullg(=)nullnullnullnullg12(x)=nullDytanx4-x3=0g13(x)=nullx1tanx5-x3=0nullnullHq,GGmin-F(x)=-null4(D2y-x21)x2Kcnullx3cosx4+x52-mnullcosx4+x52+nullcosnullX=x1nullx2nullx3nullx4nullx5T=DgnullnnullLnullaynullagTs.tg1(x1)=0null3Dy-x1null0g2(x)=x1-0null4Dynull0g4(x)=x4-22null0g5(x)=8-x4null0g6(x)=x5-45null0g7(x)=25-x5null0g8(x)=x3-nullDytannull4-nullnull0g9(x)=0null4m-x3cosx4+x52null0g10(x)=m(Dy-x1)-2x3null0g11(x)=x3-2null2m(Dy-x1)null0g12(x)=nullDytanx4-x3=0g13(x)=nullx1tanx5-x3=0nullnullGG,G=ah,I99,VG1K,G!9bID:1null.G!99ZELJ.=,1995(6)2nullC,oW.!9yLlM.:,1998.3nully.m(!)M.:,1993.4null.,.Oc?J.,2001(2).5nullF.#1J./,1998(3).nullnullTe:李建平(1967-),3,)=,pV3,Z_!9#