Several groups of diaphragms (stainless steel thin plates) are alternately connected with the two halves of the coupling with bolts. Each group of diaphragms is made up of several pieces. The diaphragms are divided into connecting rod type and different shape of the whole piece type. The diaphragm coupling relies on the elastic deformation of the diaphragm to compensate for the relative displacement of the connected two shafts. Diaphragm coupling is a high-performance flexible coupling with strong metal components. Diaphragm coupling 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 resistance, alkali resistance and corrosion resistance, suitable for high temperature, high speed, and corrosive medium operating conditions. Diaphragm coupling Main features: The diaphragm coupling can compensate for the axial, radial and angular deviations between the driving machine and the driven machine due to manufacturing errors, installation errors, load-bearing deformations and the effects of temperature rise changes. The diaphragm coupling is a flexible coupling with a metal elastic element. It relies on the metal coupling diaphragm to connect the main and driven machines to transmit torque. It has the advantages of elastic vibration reduction, no noise, and no need for lubrication. It is today's replacement tooth Ideal product for type coupling and general coupling. The main characteristics of the diaphragm coupling: 1. The ability to compensate the misalignment of the two axes is strong. Compared with the gear coupling, the angular displacement can be doubled, the reaction force is small during the radial displacement, the flexibility is large, and certain axial, radial and angular directions are allowed. Displacement. 2. It has obvious shock absorption, no noise and no wear. 3. Adapt to high temperature (-80+300) and work in harsh environments, and can operate safely under shock and vibration conditions. 4. High transmission efficiency, up to 99.86%. Especially suitable for medium, high speed and high power transmission. 5. Simple structure, light weight, small size, convenient assembly and disassembly. It can be assembled and disassembled without moving the machine (refer to the type with intermediate shaft), and no lubrication is required. 6. It can accurately transmit the speed without slip, and can be used for the transmission of precision machinery. Diaphragm coupling structure: 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 does 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. Diaphragm coupling select The correct choice of diaphragm coupling: 1. The diaphragm coupling consists 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. 2. The characteristic of diaphragm coupling is a bit like bellows coupling. In fact, the way the coupling transmits torque is similar. The diaphragm itself is very thin, so it is easy to bend when the relative displacement load is generated, so it can withstand up to 1.5 degrees of deviation, while generating a lower bearing load in the servo system. 3. Diaphragm couplings are often used in servo systems. Diaphragms have good torque rigidity, but are slightly inferior to bellows couplings. 4. On the other hand, the diaphragm coupling is very delicate, and it is easy to be damaged if it is misused in use or not installed correctly. Therefore, it is very necessary to ensure that the deviation is within the tolerance range of the normal operation of the coupling. 5. Adjust the model according to the shaft diameter: The initially selected coupling dimensions of the bearing coupling, that is, the shaft hole diameter d and the shaft hole length L, should meet the requirements of the shaft diameters of the driving and driven ends, otherwise the coupling specifications must be adjusted according to the shaft diameter d. It is a common phenomenon that the shaft diameters of the driving and driven ends are different. When the torque and speed are the same, and the shaft diameters of the driving and driven ends are different, the coupling model should be selected according to the larger shaft diameter. In the newly designed transmission system, the seven shaft hole types specified in GBT3852 should be selected, and the J1 shaft hole type is recommended to improve versatility and interchangeability. The shaft hole length is in accordance with the i-bearing coupling product standard . Diaphragm coupling Cause of abnormal noise: 1. The gap between the two halves of the coupling is too wide, causing the diaphragm to receive a large axial force, and the stranded holes or stranded bolts are worn out, causing abnormal noise; 2. Excessive axial deviation or excessive deflection angle of the two halves of the coupling will also cause vibration and abnormal noise during equipment operation; 3. The difference between the speed of the active end and the passive end will also cause vibration and abnormal noise when the equipment is running; 4. The speed code disc of the motor is faulty, causing the speed of the motor to be fast and slow, and the diaphragm coupling makes abnormal noise. For more details please email us at info@haiderglobal.com.pk