How can the service life of the diaphragm coupling be extended

The diaphragm coupling is composed of several groups of diaphragms (stainless steel thin plate) which are alternately connected with the two halves of the coupling with bolts. Each group of diaphragms is composed of several stacked ones. The diaphragms are divided into connecting rod type and different shapes The whole piece. It is a high-performance flexible coupling with metal elastic elements. It does not require lubrication, has a compact structure, high strength, long service life, no rotation gap, and is not affected by temperature and oil. It has the characteristics of acid, alkali and corrosion resistance. , It is suitable for shafting transmission in high temperature, high speed, and corrosive medium working conditions. It is widely used for shafting transmission of various mechanical devices, such as water pumps (especially high-power, chemical pumps), fans, compressors, hydraulic machinery, Petroleum machinery, printing machinery, textile machinery, chemical machinery, mining machinery, metallurgical machinery, aviation (helicopter), naval high-speed power transmission systems, after being dynamically balanced, are commonly used in high-speed transmission shaft systems. Our company specializes in producing diaphragm couplings.

The vulnerable part of the diaphragm coupling is the diaphragm assembly. The service life of the diaphragm assembly determines the service life and task efficiency of the coupling. There is a certain gap between domestically produced diaphragm couplings and foreign products in terms of appearance quality and service life. To this end, the researchers conducted a study on the diaphragm coupling. From the practically damaged diaphragm group and theoretical analysis, it can be seen that the damage of the diaphragm assembly mainly appears near the hinge point of the diaphragm group. This is because when there is angular displacement and axial displacement between the power machine and the task machine, additional stress will occur in the diaphragm group in the diaphragm coupling connecting the power machine and the task machine. When the diaphragm coupling is in a high-speed operation or repeated positive rotation, the diaphragm group receives the effect of alternating stress and is easily destroyed.

Compared with the gear coupling, the diaphragm coupling has no relative sliding, no lubrication, sealing, no noise, basically no maintenance, more convenient to manufacture, and can partially replace the gear coupling. Diaphragm couplings have been widely used in developed areas. In practical applications, the intermediate shaft type is generally used to improve the performance of two-axis offset compensation.