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How to use and maintain the planetary reducer during the running-in period?

Planetary gearboxes pay attention to the operating load during running-in. In general, the operating load during running-in shall not exceed 85% of the rated operating load. After the planetary reducer leaves the factory, it is generally stipulated that the running-in time is about 200 hours (it is necessary to change the oil after the time), and the appropriate amount of operation is organized. Avoid the overheating phenomenon caused by the long-term continuous operation of the planetary reducer. Pay attention to frequent inquiries. If there is an abnormality, you should park the car in time to clean it. If the cause is not found and the fault is not cleaned, the operation should be stopped.Reasonable selection of lubricating oil for planetary reducers, especially for reducers with input power greater than 11KW, should be filled with medium-load gear oil. Pay attention to frequently check the lubricating oil, hydraulic oil, coolant, oil level and quality, and check the tightness of th...

2019-05-09



What are the parameters of the micro reducer

The function of the micro reducer is to reduce the speed of the drive motor and increase the output torque, which can drive a relatively large load. The parameters of the micro reducer determine the size of the driven load. The parameters of the reducer are briefly introduced below.Micro reducerThe main parameters of the miniature reducer are speed ratio, torque, voltage, diameter, gear series, return clearance, power, no-load speed, full-load efficiency, etc.1) Speed ratio: The speed ratio determines the output speed and torque of the micro gear motor. The larger the reduction ratio, the greater the impact on the output torque and the lower the speed. The input speed of the micro motor can be divided by the output speed of the reducer. To calculate the reduction ratio, assuming that the output speed of the micromotor is 20000 rpm, and the output speed after passing through the reducer is 200 rpm, then the reduction ratio is 20000÷200=100, which is 100:1.2) Torque: It is also the torq...

2019-05-09



The root cause of failure caused by high-power gear reduction

High-power gear reducer is a very important gear transmission product, and gear transmission is one of the main ways of mechanical transmission. At present, gear reducers are used in metallurgy, petrochemical, mining, transportation and other industrial sectors. , also used gears. However, due to the harsh working environment of the gear location and other reasons, it is easy to be harmed and faulty. According to statistics, 80% of the faults in high-power gear reduction machinery are caused by gears.There are various failure modes of gears. Among them, the more common crack failure is a more serious failure mode. The further expansion of the crack may lead to fatigue fracture of the gear teeth, and even cause the failure of the entire gear. Therefore, it is very important to analyze the fault mechanism of cracks and find a useful method for diagnosing crack faults.For a long time, people have carried out a lot of research on the diagnosis method of tooth root cracks, and achieved a lo...

2019-05-09



Refueling method and precautions of worm gear reducer

Users who have used the worm gear reducer may know that the reason why it can work smoothly is the consumption of oil. When it is used, we need to fill it with oil, so how can it be better completed? What about this job?If the oil quantity is judged under the working condition of the worm gear reducer, the distance from the actual oil quantity is relatively large. The reason why lubricating oil should not be added when the worm gear reducer is working is because during the working process of the worm gear reducer, the internal gears or the worm gear rotates to drive the internal lubricating oil to work together. If you judge the oil amount of the worm gear reducer, it may be full, or it may be lower than 2/3 of the oil window, or even there may be no lubricating oil.When the worm gear reducer is used for the first time or is not used for a long time, it should be tested for 200 to 400 hours. During the trial work period, abnormal phenomena may be found. If there is, take measures to de...

2019-05-09



How to solve the problem of reducer wear

For the wear problem, the traditional solution of the enterprise is to repair welding or brush plating after machining, but both have certain drawbacks: the thermal stress caused by the high temperature of repair welding cannot be completely eliminated, and it is easy to cause damage to raw materials, resulting in bending or breaking of parts; The brush plating is limited by the thickness of the coating, which is easy to fall off, and the above two methods are both repairing the metal with metal, which cannot change the "hard-to-hard" matching relationship, and will still cause re-wear under the combined effect of various forces. For some large bearing companies, it is impossible to deal with them on the spot, and they must rely on external assistance for correction.Contemporary western countries use polymer composite materials to repair the above problems. According to authoritative statistics, many products are used now, which have comprehensive functions such as strong adh...

2019-05-09

Adjustment of Spindle Rotation Accuracy of Planetary Reducer

If the machining error of the spindle itself meets the requirements, the rotation accuracy of the reducer spindle is generally determined by the bearing. The key to adjusting the rotation accuracy of the spindle is to adjust the bearing clearance.Maintaining a proper bearing clearance is critical to spindle component function and bearing life.For rolling bearings, when there is a large gap, not only will the load concentrate on the rolling body in the direction of force, but also serious stress concentration will occur at the contact of the inner and outer ring raceways of the bearing, shortening the bearing life, It will also cause the spindle center line to drift, which is easy to cause the spindle components to vibrate.Therefore, the adjustment of the rolling bearing must be preloaded, so that a certain amount of interference occurs inside the bearing, and then a certain elastic deformation occurs at the contact between the rolling body and the inner and outer ring raceways, thereby...

2019-05-09



The problem of broken shaft that occurs when the reducer is not concentric

Some users have broken the output shaft of the drive motor after the equipment has been working for a period of time. Why does the output shaft of the drive motor twist off?When we carefully observe the cross-section of the broken output shaft of the drive motor, we will find that the outer ring of the cross-section is brighter, and the color of the cross-section is darker toward the axis, and there are broken marks (point marks) at the axis. This phenomenon is mostly caused by the inconsistency of the drive motor and the reducer when they are installed.When the concentricity between the drive motor and the reducer is well ensured, the output shaft of the drive motor only bears the rotational force (torque), and it works smoothly without pulsation. When it is not concentric, the output shaft of the drive motor also bears the radial force (bending moment) from the input end of the reducer. The effect of this radial force will force the output shaft of the drive motor to bend, and the di...

2019-05-09



How to install the shaft-mounted reducer?

1. The connection between the reducer and the working machine: The reducer is directly sleeved on the main shaft of the working machine. When the reducer is working, the reaction torque acting on the reducer body is balanced by the anti-torque bracket installed on the reducer body or by other methods. The reducer is directly matched, and the other end is connected with the fixing bracket.2. Installation of the anti-torque bracket 1) The anti-moment bracket should be installed on the side of the reducer facing the working machine to reduce the bending moment attached to the working machine shaft. 2) The shaft sleeve at the connection end of the anti-torque bracket and the fixed support uses an elastic body such as rubber to prevent deflection and absorb the torque fluctuation that occurs. 3) The installation relationship between the reducer and the working machine: In order to avoid the deflection of the main shaft of the working machine and the additional force on the...

2019-05-09



What are the industries that use a large amount of reducers for gear motors?

What are the industries that use a large amount of reducers for gear motors?The occupations with a large amount of reducers used in gear motors mainly include: food machinery, electric machinery, metallurgical machinery, environmental protection machinery, electronic appliances, road construction machinery, chemical machinery, light industrial machinery, mining machinery, transportation machinery, construction machinery, building materials machinery , cement machinery, rubber machinery, water conservancy machinery, petroleum machinery, etc., the number of reducer products used in these industries has accounted for 60%-70% of the total number of reducers used in various industries in the country.The reducer used in the gear motor will also increase with the demand for heavy machinery equipment and spare parts in the world market. With the gradual economic recovery of European and American countries, re-establishing the position of the real economy in the national economy and the basic c...

2019-05-09



What is the relationship between the motor and the reducer

A geared motor refers to an integrated body of a reducer and a motor (motor). Such an integrated body may also generally be referred to as a gear motor or a gear motor. Generally, a professional reducer manufacturer will supply it as a complete set with the motor after it is integrated and assembled.1) Reduce the speed and increase the output torque at the same time. The torque output share is multiplied by the motor output multiplied by the reduction ratio, but be careful not to exceed the additional torque of the reducer.2) Deceleration reduces the inertia of the load at the same time, and the reduction of inertia is the square of the reduction ratio. You can see that the general motor has an inertia value.Gearbox use1. Speed up the deceleration: It is often referred to as a variable speed gearbox.2. Change the transmission direction: for example, we use two sector gears to directly transmit the force to the other rolling shaft.3. Change the rolling torque: under the same power condi...

2019-05-09

How to replace the reducer lubricating oil

How to replace the reducer lubricating oil:After cooling, the viscosity of the oil increases, and it is difficult to drain the oil. The reducer should be changed at the operating temperature.1. Cut off the power supply to prevent electric shock. Wait until the reducer cools down and there is no danger of burning; (Note: The reducer should still be warm when changing the oil.)2. Put an oil pan under the oil drain plug;3. Open the oil level plug, breather and oil drain plug;4. Remove all the oil;5. Install the oil drain plug;6. Inject new oil of the same grade (note: do not add lubricating oil of different grades into the same reducer);7. The amount of oil should be consistent with the installation position;8. Check the oil level at the oil level plug;9. Tighten the oil level plug and breather.

2019-05-09



How to measure the temperature rise in the operation of the reducer

1) Thermometer method: This is a simple and direct method of measuring temperature, which is often measured with an alcohol thermometer. When measuring, the thermometer can be placed close to the bearing surface or stator core to be measured, and the temperature indication can be read. When measuring the winding temperature, the thermometer can be inserted into the hoisting screw hole of the reducer. The measured temperature value is the surface temperature of the winding, plus the hot temperature difference (B-class insulation takes 10. c) is the hot spot of the reducer winding. temperature. The temperature of the reducer minus the ambient temperature is the temperature rise of the reducer.2) Resistance method: The resistance value of the metal wire increases correspondingly with the increase of temperature. In a certain temperature range, there is a certain functional relationship between the resistance value and the temperature. Using this principle, the winding can be measured by m...

2019-05-09



The problem of broken shaft when the output of the reducer is too small

If the drive motor shaft is not broken, but the output shaft of the reducer is broken, in addition to the reasons for the poor assembly concentricity of the output end of the reducer, there are the following possible reasons:First of all, the wrong type selection results in insufficient output of the equipped reducer. Some users mistakenly believe that as long as the rated output torque of the selected reducer meets the operating requirements, it is not the case.First, the additional output torque of the drive motor is multiplied by the speed ratio, and the value obtained is in principle smaller than the corresponding rated output torque provided by the product sample of the reducer;The second is to consider the overload capacity of the drive motor and the operating torque required in practical use. In theory, the operating torque required by the user must be less than twice the additional output torque of the reducer.Especially in some occasions, it is necessary to strictly abide by t...

2019-05-09



How to improve the level of the reducer

The reducer is a power transmission mechanism that uses the speed converter of the gear to reduce the number of revolutions of the motor (motor) to the required number of revolutions, and obtain a large torque mechanism. In the mechanism used to transmit power and motion, the application range of reducer is quite extensive.Today, I will briefly introduce some views on how to improve the level of the reducer:1. The theoretical knowledge is becoming more and more perfect and closer to reality (such as gear strength calculation method, modification technology, deformation calculation, optimization design method, smooth transition of tooth root, new structure, etc.);2. Use good materials, generally use various high-quality alloy steel forgings, and improve the quality control level of materials and heat treatment;3. The structure design is more reasonable; 4. The machining accuracy is improved to ISO5-6 level;5. The bearing quality and life are improved;6. The quality of lubricating oil is...

2019-05-09



How to choose between helical planetary reducer and spur gear planetary reducer?

Helical gear planetary reducer and spur gear planetary reducer are the reducer products we use widely at present, so when we choose planetary reducer, how to choose these two? Let's take a look with the planetary reducer!Planetary reducerEach part of the helical planetary reducer touches a different part of the tooth profile, so that each lamella will have the effect of gear errors.First, when both gears work well, helical gears must be more accurate than spur gears. Then, each part of the helical planetary reducer touches a different part of the tooth profile, so that each slice will have the effect of gear error.The disadvantage of the spur gear planetary reducer is that it will vibrate during operation. Whether due to design, manufacture, or deformation, the involute tooth profile may undergo some variation along the entire flank at the same time. This will cause each tooth to be stimulated on a regular basis, which is usually very powerful. The resulting vibrations can cause he...

2019-05-09