Composition and significance characteristics of th

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

due to structural reasons, the minimum single-stage reduction is 3, and the maximum is generally no more than 10. The common reduction ratio is 3.4.5.6.8.10. The number of reducer stages is generally no more than 3, but some customized reducers with large reduction ratio have 4-stage reduction

compared with other reducers, planetary reducers have the characteristics of high rigidity, high accuracy (single-stage can achieve less than 1 point), high transmission efficiency (single-stage is 97%-98%), high torque/volume ratio, lifelong maintenance free, etc

because of these characteristics, most planetary reducers are installed on stepping motors and servo motors to reduce speed and improve torque. In 2016, the global market value of high-performance composites was $23.5 billion, matching inertia

the maximum rated input speed of the reducer can reach 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 planetary reducer generally does not exceed 2000Nm, and the special Super torque planetary reducer can reach more than 10000nm The working temperature is generally about -25 ℃ to 100 ℃, and its working temperature can be changed by changing the grease

several concepts of planetary reducer:

stage: number of sets of planetary gears Because a set of star gears cannot meet the requirements of large transmission ratio, sometimes two or three sets are needed to meet the requirements of supporting large transmission ratio Due to the increase in the number of star gears, the length of the 2-stage or 3-stage reducer will increase and the efficiency will decrease

return clearance: fix the output end, and rotate the input end clockwise and anticlockwise, so that when the input end produces the rated torque + -2% torque, there is a small angular displacement at the input end of the reducer, which is the return clearance The unit is minute, which is one sixtieth of a degree It is also called dorsal fissure

planetary reducer is an industrial product with a wide range of uses. Its performance can be comparable to other military reducer products, but it has the price of industrial products and is used in a wide range of industrial occasions

the reducer has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation and low noise. It has the characteristics of power diversion and multi tooth meshing. The maximum input power can reach 104kw. It is applicable to WGN fixed shaft transmission reducer, WN sub and mother gear transmission reducer and elastic load reducer with small tooth difference of planetary Series in industrial departments such as lifting and transportation, engineering machinery, metallurgy, mining, petrochemical industry, construction machinery, light industry and textile, medical instruments, instruments, automobiles, ships, weapons and aerospace

planetary reducer is a new reducer with wide versatility. The internal gear adopts 20cvmnt carburization, quenching and gear grinding. The whole machine has the characteristics of small structure size, large output torque, constant speed ratio, high efficiency, safe and reliable performance, etc. This machine is mainly used for the slewing mechanism of tower crane, and can also be used as a supporting part in lifting, excavation, transportation, construction and other industries

planetary reducer product features:

planetary gear reducer has the characteristics of light weight, small volume, large transmission ratio range, high efficiency, stable operation, low noise and strong adaptability. Reducer is widely used in metallurgy, mining, lifting and transportation, electric power, energy, building materials, light industry, transportation and other industrial departments

Product Description:

1. The P series planetary gear reducer adopts modular design, which can be combined according to customer requirements.

2. The reducer adopts involute planetary gear transmission, which makes rational use of internal and external meshing and power diversion.

3. The box body adopts nodular cast iron, which greatly improves the rigidity and seismic resistance of the box body.

4. The gears are carburized and quenched to obtain a high hardness and wear-resistant surface, All gears are ground after heat treatment, which reduces the noise and improves the efficiency and service life of the whole machine

5. The P series products of planetary reducer have type specifications, and the planetary transmission stages have 2 and 3 levels

reduction ratio:

25 ~ 4000r/min (combined with Rx, R, K series to achieve a larger speed ratio)

output torque: nm

motor power: 0 KW

installation form:

1, foot installation

2, flange installation

3, torque arm installation

shaft output mode:

1, solid shaft

2, involute spline solid shaft

3, open spline hollow shaft

4, hollow shaft with expansion disk

lubrication and maintenance:

put the recommended model and value of grease into the planetary reducer. Planetary reducer is lubricated with lubricating oil. For the planetary reducer installed vertically, since the lubricating oil may not guarantee the reliable lubrication of the uppermost bearing, other lubrication measures are adopted

before operation, inject an appropriate amount of lubricating oil into the planetary reducer, and the viscosity of the lubricating oil is selected according to the following list. Planetary gear units are usually equipped with oil filler holes and drain plugs. Therefore, the installation position must be specified when ordering the planetary reducer. The following table lists the brands and models of lubricants recommended for general applications

note: for the application of unconventional working conditions, please consult the manufacturer

the working oil temperature shall not exceed 80 ℃

the combined planetary gear reducer lubricated for life is filled with synthetic oil in the manufacturer. In addition, the planetary gear reducer is usually supplied without lubricating oil and with oil filling plug and oil drain plug. The quantity of planetary reducer lubricating oil listed in this sample is only an estimate. Set the position of the oil level plug according to the installation position specified during ordering to ensure correct oil filling. The oil filling amount of the reducer should be determined according to different installation methods. If the transmission power exceeds the thermal capacity of the reducer, an external cooling device must be provided

planetary reducer includes single-stage, double-stage and three-stage transmission, with 12 bases, 27 models and 58 speed ratios, which can form 498 reducers of different specifications

this reducer is mainly used in metallurgy, mining, lifting and transportation, petrochemical, coal energy, cement building materials, engineering building materials, engineering construction and other industries. It can also be used in light industry, textile, water conservancy and hydropower departments for deceleration or speed-up transmission

ngw planetary reducer includes single-stage units of coal based fine chemical phase I project of Xinjiang Guotai Xinhua Mining Co., Ltd. each unit has successively started feeding and commissioning, and two-stage and three-stage transmission. There are 12 bases, 27 models and 58 speed ratios, which can form 498 reducers of different specifications

this reducer is mainly used in metallurgy, mining, lifting and transportation, petrochemical, coal energy, cement building materials, engineering building materials, engineering construction and other industries. It can also be used in light industry and textile. Applicable conditions:

the peripheral speed of gear transmission of reducer shall not exceed 10 m/s

the input shaft speed is not higher than 1500 rpm

the operating ambient temperature of the reducer is -40 ℃ - +45 ℃

the reducer can be used for forward and reverse operation

working principle of planetary gear reducer:

1) the ring gear is fixed, the sun gear is active, and the planet carrier is passive. This combination is speed reduction transmission, and the transmission ratio is generally 2.5 ~ 5, with the same steering

2) the ring gear is fixed, the planet carrier is active, and the sun gear is passive. This combination is speed-up transmission. The transmission ratio is generally 0.2 ~ 0.4, and the steering is the same

3) the sun gear is fixed, the ring gear is active, and the planet carrier is passive. This combination is speed reduction transmission, and the transmission ratio is generally 1.25 ~ 1.67, with the same steering

4) the sun gear is fixed, the planet carrier is active, and the ring gear is passive. This combination is speed-up transmission. The transmission ratio is generally 0.6 ~ 0.8, and the steering is the same

5) the planet carrier is fixed, the sun gear is active, and the ring gear is passive. The transmission ratio is generally 1.5 ~ 4, and the steering is opposite

6) the planet carrier is fixed, the ring gear is active, and the sun gear is passive. This combination is speed-up transmission. The transmission ratio is generally 0.25 ~ 0.67, and the steering is opposite

7) the situation of combining any two of the three elements into one: when the planet carrier and the gear ring are combined as one as the driving part, the sun gear is the passive part, or the sun gear and the planet carrier are combined as one as 6) the physical meaning of the wear resistance coefficient is the ratio of the mass wear amount of the reference material and the experimental material after the wear test, the motion of the driving part and the gear ring as the passive part

. There is no relative movement between the planetary gears. They operate as a whole, with a transmission ratio of 1 and the same steering. This combination is commonly used in cars to form a direct

8) any of the three elements is active, and the other two elements are free: from the analysis, it can be seen that the other two elements have no definite speed output. In the sixth combination mode, due to the large speed increase, the steering of the active and passive parts is opposite. According to the random investigation of the effective travel of the electronic tension machine sold in the current market, it is learned that this combination is usually not used in cars. The other seven combinations are commonly used

installation method of planetary reducer:

in the reducer family, planetary reducer is widely used in servo, stepping, DC and other transmission systems because of its small size, high transmission efficiency, wide deceleration range and high precision. Its function is to reduce the speed, increase the torque and reduce the load/motor moment of inertia ratio on the premise of ensuring precise transmission. In the past few years, some users broke the output shaft of the reducer due to human factors such as illegal installation when using the reducer, causing unnecessary losses to the enterprise. Therefore, in order to better help users use the reducer, I will introduce in detail how to correctly install the planetary reducer

the correct installation, use and maintenance of the reducer is an important link to ensure the normal operation of mechanical equipment. Therefore, when installing the planetary reducer, please be sure to carefully assemble and use it in strict accordance with the following installation and use related matters

first step

before installation, confirm whether the motor and reducer are intact, and strictly check whether the dimensions of each part connected with the motor and reducer match. Here are the dimensions and matching tolerances of the positioning boss, input shaft and reducer groove of the motor

step 2

unscrew the screw on the dust hole on the outside of the reducer flange, adjust the PCS system clamping ring to align its side hole with the dust hole, insert the hexagon socket and tighten it. Then, remove the motor shaft key

step 3

connect the motor and reducer naturally. When connecting, it must be ensured that the concentricity of the reducer output shaft and the motor input shaft is consistent, and the outer flanges of the two are parallel. If the centrality is inconsistent, the motor shaft will be broken or the reducer gear will be worn

in addition, it is strictly forbidden to strike with a hammer during installation to prevent excessive axial or radial force from damaging the bearing or gear. Be sure to tighten the installation bolts before tightening the tension bolts. Before installation, wipe the antirust oil of the motor input shaft, positioning boss and the connecting parts of the reducer with gasoline or sodium zinc water. Its purpose is to ensure the tightness of the connection and the flexibility of operation, and to prevent unnecessary wear and tear

before connecting the motor with the reducer, the keyway of the motor shaft should be perpendicular to the tightening bolt. To ensure uniform stress, screw the installation bolts at any diagonal position first, but do not tighten them, then screw the installation bolts at the other two diagonal positions, and finally tighten the four installation bolts one by one. Finally, tighten the tension bolt. All tightening bolts shall be fixed and checked by torque wrench according to the indicated fixed torque data

the correct installation between reducer and mechanical equipment is similar to the correct installation between reducer and drive motor. The key is to ensure that the reducer output shaft and