How Many Do You Know About The Structure And Principle Of Planetary Gear Reducer?

The planetary gear reducer is a precision reduction motor, which has great working efficiency and applicability; according to the power, the planetary gear reducer is divided into a small planetary gear reducer and a high-power planetary reducer, which are used in different fields and scenarios; the following details are introduced The structure and working principle of planetary gear reducer.

The structure of planetary gear reducer:

The structure of planetary gear reducer is mainly composed of planetary gear, sun gear, ring gear, planet carrier, and transmission source (motor).

Working principle of planetary gear reducer

1. Number of stages: the number of sets of planetary gears. Because one set of planetary gears cannot meet the larger transmission ratio, sometimes 2 or 3 sets are needed to meet the user’s requirements for larger transmission ratios. Due to the increase in the number of planetary gears, the length of the 2-stage or 3-stage reducer will change. Increased, efficiency will decrease.
2. Return clearance: fix the output end and rotate the input end clockwise and counterclockwise to make the input end produce rated torque +-2% torque, there is a slight angular displacement at the input end of the reducer, this angular displacement is the return clearance .

3. The planetary gear reducer is tightly combined with an inner gear ring (A) on the gearbox housing. There is a sun gear (B) in the center of the ring gear which is driven by external power. The planetary gear set with the gears equally divided and combined on the tray (C) This set of planetary gears is supported by the output shaft, internal gear ring and sun gear to float during the period; when the input side power transmission sun gear, it can drive the planetary gear to rotate, and Following the trajectory of the inner gear ring and revolving along the center, the rotation of the planet drives the output shaft connected to the tray to output power.

Features of planetary gear reducer

1)Transmission characteristics: small rotation fluctuation, energy conversion utilization rate, fast speed adjustment;
2) Small size: small diameter size can reach 3.4mm;
3)Accuracy: The transmission accuracy of the planetary gearbox can be increased;
4). Long life: long continuous transmission time;
5)Transmission efficiency:high transmission efficiency with planetary gearbox;
6)Drag characteristics: the stability of the operation is very reliable, and the fluctuation of the speed is very small;
7)Application: Planetary gear reducer is used in smart home, electronic products, automobile transmission, communication equipment, industrial automation, robot transmission and other fields.