A、在图示轮系中,各齿轮均为标准齿轮,已知z<sub>1sub>=20,z<sub>2sub>=48,z<sub>2’sub>=20。试求z<sub>3sub>及传动比i<sub>1Hsub>。
A、在图示轮系中,各齿轮均为标准齿轮,已知z<sub>1sub>=20,z<sub>2sub>=48,z<sub>2’sub>=20。试求z<sub>3sub>及传动比i<sub>1Hsub>。
A、图示所示轮系,已知Z<sub>1sub>=18、Z<sub>2sub>=20、Z<sub>2’sub>=25、Z<sub>3sub>=25、Z<sub>3’sub>=2、Z<sub>4sub>=40,求该轮系的传动比,并判断蜗轮4的转向。
A、在图示轮系中,各轮齿数为z<sub>1sub>=10,z<sub>2sub>=40,z<sub>2’sub>=15,z<sub>3sub>=30,z<sub>3’sub>=20,z<sub>4sub>=40。试求传动比i<sub>14sub>,并确定O<sub>1sub>和轴O<sub>4sub>的转向是相同还是相反?
A、Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) B、Z<sub>1sub>+Z<sub>2sub>Z<sub>3sub>/(Z<sub>2sub>+Z<sub>3sub>) C、Z<sub>1sub>+Z<sub>2sub>+Z<sub>3sub> D、Z<sub>1sub>+(Z<sub>2sub>+Z3)/(Z<sub>2sub>Z<sub>3sub>)
A、i=ω<sub>1sub>/ω<sub>2sub> B、i=Z<sub>2sub>/Z<sub>1sub> C、i=n<sub>1sub>/n<sub>2sub> D、i=d<sub>2sub>/d<sub>1sub>