主減速器齒輪計算載荷的確定

主減速器齒輪計算載荷的確定通常將發(fā)動機最大轉(zhuǎn)矩配以傳動系最低擋傳動比時和驅(qū)動車輪在良好路面上開始滑轉(zhuǎn)時這兩種情況下作用在主減速器從動齒輪上的轉(zhuǎn)矩(Tje和Tj少)的較小者，作為載貨汽車和越野汽車在強度計算中用以驗算主減速器從動齒輪最大應(yīng)力的計算載荷，即T=T iKn/njeemaxTL0TTj@=G2^rr/(nLBiLB)式中：T 是發(fā)動機的最大轉(zhuǎn)矩，T =200NXmemax emaxiTL由發(fā)動機至所計算的主減速器從動齒輪之間的傳動系最低TL擋傳動比，iTL=6.5；nT傳動系上述傳動部分的傳遞效率，取nt=0.85K0由于“猛接合”離合器產(chǎn)生沖擊載荷時的超載系數(shù)，對于一般載荷汽車K0=ln汽車驅(qū)動橋數(shù)目；n=1G2汽車滿載時一個驅(qū)動橋給水平地面的最大載荷15600N少輪胎對地面的附著系數(shù)，取0.85r輪胎的滾動半徑，r=0.2985m；rrnTB，iTB分別為由所計算的主減速器從動齒輪到驅(qū)動輪之間的LBLB傳遞效率和傳動比n=0.95i=1TB ，TBT=TiKn/njeemaxTT0T=200*6.5*1*0.85/1=1105N*mTj<p=Gcpr/ni)2rLBLB=15600*0.85*0.2985/1/0.95=4166.44N*m3．2．3主減速器齒輪基本參數(shù)的選擇T.=(G+Gt)r(fR+t+f)/(nLBiBn)N*mjm aTrRHp LBLBG滿載總重量，G=24000N;a aGT所牽引的掛車的滿載總重量，N,=0勒道路滾動阻力系數(shù)=0.018fH汽車正常使用時的平均爬坡能力系數(shù)，通常0.07fp汽車的性能系數(shù)pf=[16－0.195(G+G)/T ]/100p aTemax0.195(G+G)/T >16,取f=0aTemax p所以fp=0pT=(G+G)r(f+f+f)/(ninjmaTrRHp LBLB=(24000+0)*0.2985*(0.018+0.07+0)=663.613N*m主減速器主從動齒輪的齒數(shù)，根據(jù)加工原則和推薦值z1=9，z2=46主減速器雙曲面從動齒輪節(jié)圓直徑由經(jīng)驗公式：d=K(T)1/32d2jKd2直徑系數(shù)，取15T.計算轉(zhuǎn)矩N*m取min(T.和Tjp)j je從動錐齒輪節(jié)圓直徑確定后，按m=d2/z2計算大端端面模數(shù)m=217.7/46=4.732且按下面公式校核m=K(T)1/3mjK模數(shù)系數(shù)，取0.3-0.4m3．2．4主減速器圓弧及延伸外擺線齒螺旋錐齒輪與雙曲面齒輪的幾何尺寸計算z19z246(1)/(2)0.195652F大齒輪齒面寬F=0.155d2；F<=10m40E33d2217.7r=[2KKAA-AA(2-sin0 sin0八 00mm 2 L2)]o.5+Amsin02114.30l'=25o+5o[power(z2/Z],0.5)]+90oE/d250tanR]'1.1918cotY=1?2(3)2i0.2348sinY2i0.97353Rm=[(6)-(4)*(11)]/2104.154sins'i等于(5)(11)/(12)0.30845

cos￡，i 0.95124(14)+(9)*(13)1.3189(3)*(12)20.387Rm1=(15)*(16)26.877Tr=0.02(1)+1.061.24(12)/(10)+(17)470.463tann=(5)/(19)(21)0.07[1+(20)(20)]0.51.0024sinn=(20)/(21)0.0698n4.00436sins2=[(5)-(17)(22)]/(12)0.2988tans20.3131tanY1n=(22)/(25)0.2229cosy]][0.976sins2'=(24)/(27)0.306coss2'0.952tanp1n=[(15)-(29)]/(28)1.199(28)[(9)-(30)]-0.0022(3)(31)-0.00043sins1=(24)-(22)(32)0.2988tans10.328tanY1=(22)/(34) 0.2128Y112.01cosy10.978sins=(33)/(37)0.3055￡1'17.79cose1'0.9522tan01=[(15)+(31)-(40)]/(38)1.1930150.03COS010.642802=(42)-(39)32.21cos020.8461tan020.63cotY2=(22)/(33)0.2336Y276.85sinY20.9738cosy20.2274[(17)+(12)(32)]/(37)27.4358(12)/(50)458.021(51)+(52)485.4568(12)(45)/(49)90.4957(43)(51)/(35)82.8747

負-tana0]=[(41)(55)-(46)(54)]/(53) 0.086負-a丿014.928C0Sa010.9963(41)(56)/(51)0.00374(46)(56)/(52)0.0001183(54)(55)7499.804[(54)-(55)]/(61)0.001016(59)+(60)+(62)0.0048743[(41)-(46)]/(63)115.504rd，=(64)/(58)115.033(7)/(56)0.9859⑶(50);1.0-(3)左左0.0445；0.80435(5)/(34)-(17)(35);(35)(37)94.89；0.2081(37)+(40)(67)左左1.0204zm=(49)(51)26.717z=(12)(47)-(70)-2.387Am=(12)/(49)106.956A0=0.5(6)/(49)111.779(73)-(72)4.823h=k(12)(45)/(2)gm7.28(12)(46)/(7)0.574

(49)/(45)-(76) 0.577ai40sinai0.6428ai/2=(78)/220cos(ai/2)0.9397tan(ai/2)0.364(77)/(82)1.5852E6d=10560(83)/(2)363.9068，Ka0.17Kb=1.150-(85)0.98人口2=(75)(85)1.2376h，，m2=(75)(86)+0.057.1844雙重收縮齒：02=(84)(85)單位分1.03sin020.018雙重收縮齒：52=(84)-(89)單位分230.936，sinS20.0671h，2=(87)+(74)(90)1.3244h，，2=(88)+(74)(92)7.508C=0.150(75)+0.051.142h=(93)+(94)8.8324hg=(96)-(95)7.6904

Y02=(48)+(89)(89項單位為分) 77.88UZ/SinY020.9777C0SY020.21YR2=(48)-(91)(91項單位為分).R2.73.001SinY.R2.0.9563C0SY.R2.0.2924COtY.R2.0.3057d°2=2(93)(50)+(6)218.3(70)+(74)(50)27.814x02=(106)-(93)(49)26.5243[(72)(90)-(87)]/(99)0.7033[(72)(92)-(88)]/(102)-0.008z0=(71)-(108)-3.0903Zr=(71)+(109)-2.395(12)+(70)(104)112.321sins=(5)/(112)0.2938cosw=[1-(113)2]i/20.9559tans=(113)/(114)0.3074sinY01=(103)(104)0.2795Y0i16.2307cosy010.9601

tanY01 0.2911[(102)(111)+(95)]/(103)-3.9273G°=[(5)(113)-(120)]/(114)14.2512tan九'=(38)(67)/(69)左0.0133九'；cos"0.7633;0.999911△"=(39)-(123);cos△“左17.0267;0.9561901=(117)-(36);cosO14.2207;0.99729±(113)(67)右-(68)右石 石0.02821;-0.4444(123)右/(124)石石 石1.0457(68)左+(87)(68)左左 左95.1475(118)/(125)石石0.9627(74)(127)5.0434B0=(128)+(130)(129)+(75)(126)左100.208(4)(127)-(130)36.7846B=(128)-(132)(129)+(75)(126)1 右56.4997(121)+(131)114.4595d01=(119)(134)/0.566.638(70)(100)/(99)+(12)109.893sins0=(5)/(136)0.3￡017.