例五.如图差速器中,已知 a=48.8=42,==18=b=21,n=100mpm,nb=80pm其转 向如图所示求n? 解: nb-nH 80 48 9.28r 例六.(复合轮系)如图 20.2g=30,b=80n=300m,求n? n1_1 第六章—14第六章— 146 例五．如图差速器中，已知 z 48,z 42,z 18,z 21, n 100rpm, n 80rpm. a = g = f = b = a = b = 其 转 向如图所示求 ? nH 解： n rpm n n z z z z n n n n i H H H a f g b b H H a H ab 9.28 48 49 80 100 = = − − − − = − − − = 例六．（复合轮系）如图 20, 30, 20, 30, 80. 300 , ? 1 2 a g b 1 nH z = z = z = z = z = n = rpm 求 解： 2 1 2 1 12 z z n n i = = −