大齿轮带动小齿轮,转动速度会变快,这是齿轮传动比的原理。为什么小齿轮带动大齿轮省力?
通过大齿轮来说,动力来自于齿轮,阻力来自于轴;通过杠杆原理,F动*R轮=F阻*R轴,F动/F阻=R轴/R轮。所以要是想要节省力气增加效率我们就可以通过小齿轮来带动大齿轮,由于小齿轮更加省距离,而大齿轮愈加的节省力气。
齿轮传动的传动比等于转矩反比吗?
齿轮传动的传动比等于转矩反比。对于两根轴组成的传动系统,若设:主动轴(输入轴)的转速为n1,齿轮齿数为z1;从动轴(输出轴)转速为n2,齿轮齿数为z2。则传动比k为:k=n1/n2=z2/z1。
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