主减速器齿轮计算载荷的确定

主减速器齿轮计算载荷的确定通常将发动机最大转矩配以传动系最低挡传动比时和驱动车轮在良好路面上开始滑转时这两种情况下作用在主减速器从动齿轮上的转矩(Tje和Tj少)的较小者，作为载货汽车和越野汽车在强度计算中用以验算主减速器从动齿轮最大应力的计算载荷，即T=T iKn/njeemaxTL0TTj@=G2^rr/(nLBiLB)式中：T 是发动机的最大转矩，T =200NXmemax emaxiTL由发动机至所计算的主减速器从动齿轮之间的传动系最低TL挡传动比，iTL=6.5；nT传动系上述传动部分的传递效率，取nt=0.85K0由于“猛接合”离合器产生冲击载荷时的超载系数，对于一般载荷汽车K0=ln汽车驱动桥数目；n=1G2汽车满载时一个驱动桥给水平地面的最大载荷15600N少轮胎对地面的附着系数，取0.85r轮胎的滚动半径，r=0.2985m；rrnTB，iTB分别为由所计算的主减速器从动齿轮到驱动轮之间的LBLB传递效率和传动比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主减速器齿轮基本参数的选择T.=(G+Gt)r(fR+t+f)/(nLBiBn)N*mjm aTrRHp LBLBG满载总重量，G=24000N;a aGT所牵引的挂车的满载总重量，N,=0勒道路滚动阻力系数=0.018fH汽车正常使用时的平均爬坡能力系数，通常0.07fp汽车的性能系数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主减速器主从动齿轮的齿数，根据加工原则和推荐值z1=9，z2=46主减速器双曲面从动齿轮节圆直径由经验公式：d=K(T)1/32d2jKd2直径系数，取15T.计算转矩N*m取min(T.和Tjp)j je从动锥齿轮节圆直径确定后，按m=d2/z2计算大端端面模数m=217.7/46=4.732且按下面公式校核m=K(T)1/3mjK模数系数，取0.3-0.4m3．2．4主减速器圆弧及延伸外摆线齿螺旋锥齿轮与双曲面齿轮的几何尺寸计算z19z246(1)/(2)0.195652F大齿轮齿面宽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

负-tana0]=[(41)(55)-(46)(54)]/(53) 0.086负-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双重收缩齿：02=(84)(85)单位分1.03sin020.018双重收缩齿：52=(84)-(89)单位分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项单位为分) 77.88UZ/SinY020.9777C0SY020.21YR2=(48)-(91)(91项单位为分).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.