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The installation method of the diaphragm coupling and the reason for the damage of the diaphragm

Publication time: November 2016, 12【L Small

  The diaphragm coupling is composed of several groups of diaphragms (stainless steel sheet) with bolts (different types of bolts according to different outer diameters) and the two halves of the coupling are tightly connected. Each group of diaphragms is made up of several pieces. The slices are divided into different shapes such as round or triangular.

  1. Install correctly.Install in strict accordance with the factory instructions, and check the coaxiality during installation.

  2. Regularly check the use condition to see if the diaphragm is damaged and the nut is loose.

  3.Replace the damaged diaphragm in time.

  To install the diaphragm coupling, the important thing is to install the bolts. Whether it is installed correctly or not will directly affect the performance, life and performance of the diaphragm coupling, otherwise it will cause a certain amount of waste of manpower and accessories.Therefore, the correct installation of the bolt direction is a key part, and you must remember not to install it backwards or drop any small parts including spring washers, so that the bolt assembly can exert its excellent performance and will not damage other parts of the coupling.

  Insert the bolt from the outside of the small hole in the flange, and then pass it into the diaphragm hole (pay attention to the direction of the diaphragm. The diaphragm is made up of many single sheets with rivets and rivet washers. The rivet washers should be in contact with the buffer sleeve, otherwise It will affect the service life of the rivet set), and then insert the buffer sleeve, elastic washer, and tighten the nut from the outside of the large hole of the flange, so that the bolt does not rotate, because the bolt and the flange are matched. The surface is a very important part of the torque transmission, and the integrity of the surface directly affects the performance.The gap between the bolt fitting section of the double diaphragm coupling and the flange hole fitting section is generally based on the bolt diameter of 0.20mm to 0.30mm. This fitting section plays a key role in transmitting torque. If the gap exceeds the standard, replace it.The diameter gap between the inner hole of the buffer sleeve and the diaphragm rivet and the bolt is 0.5mm~0.7mm, which plays the role of pressing and positioning the diaphragm.If the bolts are installed in the direction, it is easy to cause the bolts to deviate, and the diaphragm will be distorted.Therefore, you must pay attention to the direction of the bolt when installing the bolt. Do not install the bolt direction at will, otherwise it will cause the diaphragm to twist, and long-term operation will damage the surface of the diaphragm and the bolt mating section, and the small hole of the semi-shaft joint.

Keywords of this article:Plum coupling | Oldham coupling | Pin coupling |