HMB

The working principle of planetary gear

by:HMB     2021-02-08
1) Gear ring is fixed, the sun wheel active, passive: planet carrier can be seen from the demonstration, this combination to slow down the transmission, usually ratio generally to 2. 5 ~ 5, towards the same. 2) Fixed ring gear, planet carrier active, passive: the sun round the combination for raising speed transmission, transmission ratio is commonly 0. 2 to 0. 4, to the same. 3) Sun wheel fixed, ring gear, planet carrier passive: this kind of combination to slow down the transmission, the transmission ratio is usually 1. 25 ~ 1. 67, turn to the same. 4) The sun wheel fixed, planet carrier initiative, gear ring passive: the combination of acc transmission, transmission ratio is commonly 0. 6 ~ 0. 8, towards the same. 5) Active, planet carrier is fixed, the sun wheel gear ring passive: this kind of combination to slow down the transmission, the transmission ratio is usually 1. 5 ~ 4, to the opposite. 6) Planet carrier fixed, ring gear, the sun wheel passive: this combination can be seen from the demo for raising speed transmission, transmission ratio is commonly 0. 25 ~ 0. 67, turn to the opposite. 7) Of the three components of any two components in one situation: when the planet carrier and ring gear combination as active, the sun wheel round the sun and the planets frame for passive parts or combined into an organic whole as active parts, gear ring as passive movement of one. We can see from the presentation, there is no relative movement between planetary gear, as a whole, the transmission ratio is 1, towards the same. Cars are commonly used this combination of file directly. 8) Three components of any components to active, and the rest two components: freedom from the analysis shows that the two remaining components determine the speed of the output. 6 kinds of combinations, due to the acc is larger, the main turning instead of passive parts, usually don't use this combination in the car. The rest of the seven kinds of combinations is commonly used.
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