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, the minimum single-stage reduction is 3, and the maximum generally does not exceed 10. The common reduction ratio is: 3.4.5.6.8.10, and the number of stages of the reducer generally does not exceed 3. However, some large reduction ratios are customized for reducers. Level 4 slowdown.

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

　　Because of these characteristics, planetary reducers are mostly installed on stepper motors and servo motors to reduce speed, increase torque, and match 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) and above, 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 -25℃ to 100℃, and the working temperature can be changed by changing the grease.
 

　　Several concepts of planetary reducer::

　　Number of stages: the number of planetary gears. Since a 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. Due to the increase in the number of planetary gears, the second level Or the length of the 3-stage reducer will increase, and the efficiency will decrease.

　　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, and this angular displacement is the return clearance. It is a "point", which is one-sixtieth of a degree. Some people call it backlash.

　　

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

　　The reducer is small in size, light in weight, high in load 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 industrial sectors such as lifting and transportation, construction machinery, metallurgy, mining, petrochemical, construction machinery, light industry and textiles, medical equipment, instrumentation, automobiles, ships, weapons, aerospace and other industrial sectors. , WN sub-and-mother gear transmission reducer, elastic uniform load and small tooth difference reducer.

　　Planetary reducer is a novel reducer with wide versatility. The internal gear adopts 20CvMnT carburizing, quenching and tooth grinding. 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 tower cranes, and can also be used as a supporting component in lifting, excavation, transportation, construction and other industries.