How does the double diaphragm coupling compensate for eccentricity? The diaphragm coupling consists of at least one diaphragm and two shaft sleeves. The diaphragm is pinned to the bushing generally without loosening or causing backlash between the diaphragm and bushing. Some manufacturers offer two diaphragms, while others offer three diaphragms, with one or two rigid elements in the middle, and the two sides are attached to the bushing. The difference between a single-diaphragm coupling and a double-diaphragm coupling is the ability to handle various deviations. Since it requires complex bending of the diaphragm, the single-diaphragm coupling is not suitable for eccentricity. The double-diaphragm coupling can be bent in different directions at the same time to compensate for eccentricity.

The diaphragm coupling compensates the relative displacement of the two connected shafts by the elastic deformation of the diaphragm. It is a high-performance flexible coupling with strong metal elements. It does not need to be lubricated. It has a compact structure, high strength and long service life. , No rotation gap, not affected by temperature and oil pollution, it has the characteristics of acid resistance, alkali resistance and anti-corrosion, and is suitable for shafting transmission in high temperature, high speed and corrosive medium working conditions. Diaphragm coupling is composed of several groups of diaphragms (stainless steel sheets) connected with the two halves of the coupling alternately with bolts. Each group of diaphragms is formed by stacking several pieces. Whole piece. Double-diaphragm couplings are widely used in 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, high-speed power transmission systems, steam turbines, piston-type power mechanical transmission systems, crawler vehicles, and high-speed, double-diaphragm coupling high-power mechanical transmission systems for generator sets, which are applied to high-speed drive shafts after dynamic balancing has become more common.