The working principle of the planetary gear reducer is generally divided into the following types. From the mechanical production factory in China: Shanghai Dianmai Transmission Technology Co., Ltd. brings you to understand together.
1) The ring gear is fixed, the sun gear is active, and the planet carrier is passive. It can be seen from the demonstration that this combination is for speed reduction transmission. Usually, the transmission ratio is generally 2.5 to 5, and the direction of rotation is the same.
2) The ring gear is fixed, the planet carrier is active, and the sun gear is passive. It can be seen from the demonstration that this combination is for speed increase transmission. The transmission ratio is generally 0.2 to 0.4, and the direction of rotation is the same.
3) The sun gear is fixed, the ring gear is active, and the planet carrier is passive. It can be seen from the demonstration that this combination is for speed reduction transmission. The transmission ratio is generally 1.25 to 1.67, and the direction of rotation is the same.
4) The sun gear is fixed, the planet carrier is active, and the ring gear is passive. It can be seen from the demonstration that this combination is for speed increase transmission. The transmission ratio is generally 0.6 to 0.8, and the direction of rotation is the same.
5) The planet carrier is fixed, the sun gear is active, and the ring gear is passive. It can be seen from the demonstration that this combination is for speed reduction transmission. The transmission ratio is generally 1.5 to 4, and the direction of rotation is opposite.
6) The planet carrier is fixed, the ring gear is active, and the sun gear is passive. It can be seen from the demonstration that this combination is for speed increase transmission. The transmission ratio is generally 0.25 to 0.67, and the direction of rotation is opposite.
7) The situation where any two elements among the three elements are combined as one:
When the planet carrier and the ring gear are combined as one to be the active element, and the sun gear is the passive element, or when the sun gear and the planet carrier are combined as one to be the active element, and the ring gear is the passive element for the motion situation. It can be seen from the demonstration that there is no relative movement among the planetary gears, and they operate as a whole. The transmission ratio is 1, and the direction of rotation is the same. This combination mode is commonly used in automobiles to form the direct gear.
8) Any one of the three elements is active, and the remaining two elements are free:
It can be known from the analysis that the remaining two elements have no definite rotational speed output. For the sixth combination mode, due to the large speed increase and the opposite directions of rotation of the active and passive elements, this combination is usually not used in automobiles. The remaining seven combinations are more commonly used.
Now, do you have some understanding of the working principle of the planetary gear reducer? If you still have questions or need similar products, welcome to contact us!