The bike chain drives a sun gear on the rear axle, which transmits power to planetary gears situated around it.

自行车的链条会驱动后轮轮轴上的太阳齿轮，将动力传送到四周的行星齿轮。

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Aiming at 2k-h planetary gear set, the physical model of sun gear scuffing damage is developed, and then the simulation signals of scuffing with different level severity are obtained.

针对2 K - H行星轮系，建立太阳轮胶合损伤的物理模型，通过仿真获得不同严重度的行星轮系损伤振动信号。

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Since the internal teeth sleeve for the gear coupling is floating with the sun gear in the planetary-stage, coupling gear is made of alloyed steel.

由于齿轮联轴器的内齿套也随行星级中的太阳轮一起浮动，所以联轴器齿轮也采用合金钢材料来制造。

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