Coupling distinction and knowledge of diaphragm coupling

　　Nowadays, more and more people are disregarding their interests, so when buying and choosing couplings, they should look for trusted manufacturers and check them carefully to avoid buying secondary products or fakes, which will affect their production and life. .
　　1. Please carefully check the material of the coupling first: the commonly used materials of the coupling are phenolic plastic, nylon, polytetrafluoroethylene and so on.However, most of the couplings are made of steel, but because the price of steel has been high now, some profiteers have made great efforts in the raw materials of the couplings!Reduce the steel model to recharge!Use ordinary steel, carbon steel, malleable steel and other materials, and some even use iron pipes instead of steel products.Therefore, it can be seen from the appearance of the coupling that there are many differences in color. The appearance of these low-cost steels is mostly whitish and there is a clear difference from the greenish color of bearing steel.
　　2. Measuring the tightening angle of the lock nut can be used to determine the correct interference of small and medium-sized bearings on the tapered journal.A guide value for the tightening angle a has been established, which helps to locate the bearing on the tapered journal.Porous metal is a kind of powder material. It has a porous structure. If it is immersed in lubricating oil, the micropores are filled with lubricating oil and become an oil-containing bearing with self-lubricating properties.Porous metal materials have low toughness and are only suitable for steady non-impact loads and medium and low speeds.
　　Diaphragm couplings are very common in the industrially developed applications. Compared with gear couplings, there is no relative sliding, no lubrication, sealing, no noise, basically no maintenance, easy to manufacture, and can partially replace gear couplings. Device.The diaphragm coupling is composed of several groups of diaphragms (stainless steel thin plates) that 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 rods and different shapes. Sliced.The diaphragm coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the two shafts connected. It is a high-performance flexible coupling with strong metal components. It does not require lubrication, and has a compact structure, high strength and long service life. , No rotation gap, not affected by temperature and oil pollution, with acid and alkali resistance and corrosion resistance, suitable for high temperature, high speed, and corrosive medium shafting environment.
　　The diaphragm coupling is composed of at least one diaphragm and two shaft sleeves.The diaphragm is fastened to the sleeve with a pin and generally will not loosen or cause backlash between the diaphragm and the sleeve.Some manufacturers provide two diaphragms, and some provide three diaphragms, with one or two rigid elements in the middle, and the two sides are connected to the shaft sleeve.The difference between the single diaphragm coupling and the double diaphragm coupling is the ability to handle various deviations. In view of the complex bending of the diaphragm, the single diaphragm coupling is not suitable for eccentricity.The double diaphragm coupling can bend in different directions at the same time to compensate for eccentricity.