Couplings belong to the category of mechanical general-purpose components, which are used to connect two shafts (active shaft and driven shaft) in different mechanisms to rotate together to transmit torque mechanical parts. In high-speed heavy-duty power transmission, some joints The shaft has the functions of buffering, damping and improving the dynamic performance of the shafting. The coupling consists of two halves, which are respectively connected with the driving shaft and the driven shaft. The general power machine is mostly connected to the working machine by means of the coupling. It is the most commonly used coupling component for shafting of mechanical products. The role of the coupling and the choice of the coupling are mainly to consider the height of the required transmission shaft, the size of the load, the installation accuracy of the two parts to be connected, the smoothness of the rotation, the price, etc., refer to the various types of couplings. Characteristic, choose a type of coupling that is used together. The working speed of the coupling and the amount of centrifugal force caused. For high-speed transmission shafts, couplings with high balance accuracy, such as diaphragm couplings, should be used, and it is not suitable to use eccentric slider couplings. The amount and nature of the torque to be delivered and the requirements for the buffer vibration function.
The biggest function of the coupling is to connect the two shafts (sometimes also coupling the shaft and other rotating parts), so that the two shafts rotate together to transmit motion and torque, realize the connection and separation between the shaft and the shaft, thereby realizing the transmission of power and Interrupted. The coupling also has the ability to compensate for two-axis offsets to eliminate or reduce additional loads caused by the relative offset of the two shafts, improving transmission performance and extending machine life. In order to reduce the vibration of the mechanical transmission system and reduce the impact spike load, the coupling should also have a certain cushioning shock absorption performance.
However, due to fierce market competition, many manufacturers in order to make profits, to use fake and inferior products to fill the good products, so that consumers suffer losses, therefore, it is also important to choose quality products. The role of the flexible coupling is absolutely impossible due to the impossibility of manufacturing and installing the elastic coupling, and the elastic deformation and temperature difference deformation of the foundation, the frame and other components when the work is loaded, the two axes connected by the elastic coupling are inevitably To produce a relative offset servo motor. The relative offsets that may occur in the two coupled axes of the flexible coupling are: axial offset, radial offset and angular offset, and combined offsets where the three offsets occur simultaneously. The presence of the relative offset of the two axes of the flexible coupling will cause additional loads on the shaft, bearings and elastic couplings, and even severe vibrations. Therefore, the flexible coupling should also have a certain ability to compensate for the two-axis offset to eliminate or reduce the additional load caused by the relative offset of the two shafts, improve the transmission performance, and extend the life of the machine. In order to reduce the vibration of the mechanical transmission system and reduce the impact peak load, the elastic coupling should also have a certain cushioning shock absorption performance.
