P series planetary gear reducer to share with you the structure and characteristics of planetary reducer

Release time:

2021-08-26

The main transmission structure of the planetary reducer is: planetary gear, sun gear, and outer ring gear.

Because of the structure of the planetary reducer, what is the minimum single-stage deceleration, and the maximum generally does not exceed 10. The common reduction ratios are: 3, 4, 5, 6, 8, 10, and the number of stages of the reducer generally does not exceed 3, but some are large The reduction ratio custom reducer has 4 levels of reduction.

Compared with other reducers, planetary reducers have high rigidity, high precision (single-stage can be within 1 minute), high transmission efficiency (single-stage 97%-98%), high torque/volume ratio, and lifetime maintenance-free, etc. Features.

Because of these characteristics, planetary reducers are mostly installed on stepper motors and servo motors to reduce the speed, increase the digging torque, and match the inertia.

The rated input speed of the reducer can reach up to 18000rpm (related to the size of the reducer itself, the larger the reducer, the smaller the rated input speed), the output torque of the industrial-grade planetary reducer generally does not exceed 2000Nm, and the special super-torque planetary reducer can be used Above 10000Nm, the working temperature is generally around -25℃ to 100℃, and the working temperature can be changed by changing the grease.

About several concepts of planetary reducer: Number of stages: the number 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 requirements of supporting a larger transmission ratio. Because of the number of planetary gears, the length of the 2-stage or 3-stage reducer will increase and the efficiency will decrease.

Return clearance: fix the output end, rotate the input end clockwise and counterclockwise, 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, unit It is a "point", which is one-sixtieth of a degree, which is also called a backlash.

Planetary reducer is an industrial product with a wide range of uses. Its performance is comparable to other military-grade reducer products, but at the price of industrial grade products, it is used in a wide range of industrial applications.

The deceleration machine is small in size, light in weight, powerful in carrying capacity, long in service life, stable in operation and low in noise. It has the characteristics of power splitting and multi-tooth meshing. The maximum input power can reach 104kw. Suitable for lifting and transportation, construction machinery, metallurgy, mining, petrochemical, construction machinery, light industry and textile. New types of planetary series WGN fixed-shaft transmission reducers, WN sub-gear transmission reducers, and elastic uniform load and small tooth difference reducers in the planetary series of medical equipment, instrumentation, automobiles, ships, weapons and aerospace industries.

Planetary reducer is a novel reducer with wide versatility. The internal gear adopts 20CvMn carburizing fire and grinding teeth. The whole machine has the characteristics of small structure size, large output torque, high speed ratio, high efficiency, and safe and reliable performance. This machine is mainly used for the slewing mechanism of the planting tower crane, and can also be used as a supporting component in lifting, excavating, transportation, construction and other industries.