差速器与传动轴是如何工作的?

2025-04-07 11:16:45
推荐回答(1个)
回答1:

如果行星齿轮转动只会出现两个结果,一个是两半轴齿轮朝两个不同方向转动,这点很好理解,想一想三个齿轮中间一个转动两边的情况就明白了!还有一个可能就是等效于第一种的,就是一边停转或者慢转另一边正常转动,这就是我们要求的差速效果!但是你可能有这个疑问,要是行星齿轮可以随意转动,那不是哪边打滑或者说哪边容易转动哪边车轮就会空转动,车不就不好控制甚至跑不动了吗!其实很简单,就是把行星齿轮的半径做成半轴齿轮的一半,因为力的作用是相互的,所以轮胎会给行星齿轮的反扭力,由于行星齿轮是半轴齿轮的一半,所以轮胎反扭力就需要比驱动力大一半才能推动行星齿轮自转,所以车子在转弯时或者一边卡住时车轮才会出现差速,正常情况时行星齿轮都是不转的,卡住半轴齿轮随半轴公转!

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