The driving structure performance of JMJ double diaphragm coupling

The JMJ double diaphragm coupling is a mechanical component that connects the drive and the follower and rotates together to transfer energy and motion. It has no lubrication, long service life, and great compensation ability. Coupling can be divided into rigid coupling and elastic coupling, rigid coupling is generally used under the overview of low speed and heavy load, its role is to transfer greater power; And elastic coupling is mainly used for high-speed rotor system, it uses elastic components or specific structure to adjust and compensate due to the production, installation and temperature changes caused by the wrong, together with the general elastic coupling has the function of vibration isolation.

JMJ double diaphragm coupling diaphragm assembly is more convenient, and does not need lubrication, can be used in a variety of working conditions. However, because of its good function, it is favored by construction machinery and pressure extension machinery. Although JMJ double diaphragm coupling is durable, it will cause failure or even scrap due to various reasons, so it is of great significance to study its failure causes. Diaphragm failure is the primary form of coupling failure. Fault tree analysis is a common and useful system reliability analysis method in engineering. The method is simple, intuitive, sensitive and suitable for failure analysis of diaphragm coupling. Coupling adopts the form of tooth top positioning. At static state, the floating outer gear sleeve has a bias pain relative to the rotating center of the shaft. When rotating up at high speed, in the absence of torque transmission, the floating outer tooth extraction sleeve under the action of centrifugal force will be partial operation, and partial load to complete the stable operation is necessary to transfer enough torque. Because the tip positioning is generally small, the lifting of the external gear sleeve can be biased less, the centrifugal force is small, and the required torque for stable operation is small. In order to make the gear coupling run smoothly, small torque is required when the high speed rotation, to correctly confirm the bias caused by the open space of the top of the gear, it is also necessary to consider the difference between the ring and the outer gear shaft sleeve caused by the high speed rotation of the radial expansion.

JMJ double diaphragm coupling under normal working conditions, the torque transmitted is much larger than R constant running torque, but after transferring the torque, it can finish the self-centering and reach stable running. The coupling shaft in the coupling is planned into a hollow shaft to reduce the weight and improve the stability of the floating parts. The gear teeth are positioned at the top of the tooth to reduce the top clearance. Dynamic balancing accuracy requires the improvement of action balance by separating the output shaft and gas turbine rotating shaft installed in the accessory gear box. Similar tooth couplings in various areas choose grease lubrication, we change to oil injection lubrication, in order to improve the lubrication conditions.