What is the function of the diaphragm coupling?

What is the function of the diaphragm coupling?
Diaphragm coupling uses a thin spring sheet (304 stainless steel sheet), each group of diaphragm by a number of laminated pieces, bolts or other connection with the two halves of the coupling, in order to achieve two shaft elastic connection. Diaphragm coupling connects two shafts (drive shaft and driven shaft) in different mechanism to rotate together and transfer torque, so that it can achieve the function of buffering, damping and improving the dynamic performance of shafting. , by the elastic deformation of the diaphragm to compensate the relative displacement of the two shafts, is a high-performance metal strong element flexible coupling, without oil, compact structure, high strength, long service life, no rotating gap, not affected by temperature and oil pollution, has the characteristics of acid resistance, alkali resistance and corrosion; Strong advantages: diaphragm coupling is simple in structure, no relative sliding, no lubrication, no sealing, no noise, basically no maintenance, easy to manufacture, can partially replace the tooth coupling.

The diaphragm of the diaphragm coupling is composed of multiple layers of 0.3~ 0.5mm stainless steel sheets stamped into four holes square or six holes plum shape and riveted together. Several groups of diaphragms (stainless steel sheet) are connected with the two halves of the coupling with bolts (different types of bolts according to different diameters). Each group of diaphragms is composed of several overlapping diaphragms, which can be divided into different shapes such as round or triangle. The coupling diaphragm consists of at least one diaphragm and two shaft sleeves. The diaphragm is fastened to the bushing with pins without loosening or causing recoil between the diaphragm and the bushing. Some manufacturers offer two diaphragms, while others offer three diaphragms, with one or two rigid elements in the middle, connected to the sleeves on both sides to form a variety of diaphragm coupling models.

Widely used in aviation, ship, petrochemical, machinery manufacturing and other fields in recent years, diaphragm coupling is with its huge application advantages in China’s machinery, petroleum, chemical, gas, electric power, steel, fans and pumps and other industries have been rapid development. Its application footprint has been expanded from aircraft, ships, tracked vehicles to civil gas turbine power station, steel rolling equipment, flexible connection between various power transmission equipment in power plants, various fans, water supply pump stations, petrochemical process pumps and so on. It plays an important role in improving equipment performance, saving energy and damping vibration.