What Are The Common Treatment Methods For Reducer Noise?
The reason why the reducer produces noise is mainly due to the friction, vibration and collision of the transmission gear. How to effectively reduce and reduce the noise and make the reducer more in line with environmental protection requirements is also a key research topic at home and abroad.
Reducing the gear transmission noise during the operation of the reducer has become an important research topic in the industry. Many scholars at home and abroad regard the change of gear tooth meshing stiffness in gear transmission as the main factor of gear dynamic load, vibration and noise. Use the method of shape modification to minimize the dynamic load and speed fluctuation to achieve the purpose of reducing noise. This method has proved to be a more effective method in practice. However, with this method, the process requires shaping equipment, which is often impossible for the majority of small and medium-sized factories.
After years of research, some scholars have proposed that by optimizing gear parameters, such as modification coefficient, tooth height coefficient, pressure angle, center distance, etc., to minimize the impact velocity of engagement, the ratio of the impact velocity of engagement and the impact velocity of engagement is at For a certain value range, the gear design method that reduces or avoids the impact of the meshing pitch circle can significantly reduce the gear noise of the reducer.
1. When installing the reducer, you should face up to the center axis of the transmission, and the error should not be greater than the compensation amount of the coupling used. Good alignment can prolong the service life and obtain ideal transmission efficiency.
2. When the transmission part is installed on the output shaft, do not use a hammer to strike it. Usually the assembly fixture and the internal thread of the shaft are used to press the transmission part in with bolts, otherwise it may cause damage to the internal parts of the reducer. It is best not to use a rigid fixed coupling, because improper installation of this type of coupling will cause unnecessary external loads, which will cause early damage to the bearing, or even break the output shaft in severe cases.
3. The reducer should be firmly installed on a stable level foundation or base, the oil in the oil drain groove should be drained, and the cooling air cycle should be smooth. The foundation is unreliable, which will cause vibration and noise during operation, and cause damage to bearings and gears. When the transmission coupling has protrusions or adopts gears or sprockets for transmission, it should be considered to install protective devices. When the output shaft bears a large radial load, the reinforced type should be selected.
4.The installation is carried out according to the defined standard, which can ensure that the staff can conveniently approach the oil mark, vent plug and oil drain plug. After the device is in place, the correctness of the device position and the reliability of the pressing of the fasteners should be checked in order, and it should be able to roll flexibly after the device is installed. The reducer adopts oil pool splash lubrication. Before operation, the user needs to remove the screw plug of the vent hole and replace the vent plug. Check the height of the oil level line by opening the oil level plug screw according to different device positions. Add oil from the oil level plug until the lubricating oil overflows from the oil level plug screw hole. Load trial run, the time shall not be less than 2 hours. The operation should be stable, and there should be no shock, vibration, noise and oil leakage. Any abnormality should be eliminated in time. After a certain period of time, the oil level should be checked again to prevent possible leakage from the casing. If the ambient temperature is too high or too low, the grade of the lubricant may be changed.
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