Coupling installation and maintenance skills

Coupling dimensions, that is, radial peak and axial dimensions, must be within the allowable installation space of machine equipment. The coupling should be selected for convenient assembly and disassembly, no maintenance, long maintenance cycle or convenient maintenance, replacement of wearing parts without moving two shafts, easy centering adjustment.
It is difficult for large machines and equipment to adjust the two shafts, so couplings with durability and convenient replacement of wearing parts should be selected. The service life of metal elastic element flexible coupling is generally longer than that of non-metal elastic element flexible coupling. The need for sealing lubrication and the use of durable coupling will inevitably increase the workload of maintenance. For long-term continuous operation and high economic benefits of the occasion, such as the high speed end of the rolling mill drive system in metallurgical enterprises in China, currently commonly used is the gear coupling, although the gear coupling theoretically transfer torque is large, but must be in good lubrication and sealing conditions to work. Besides, it is necessary to check the sealing condition frequently and inject lubricating oil or grease. The maintenance workload is large, which increases the auxiliary working hours and reduces the effective working time, and affects the production efficiency. In developed industrial areas abroad, the diaphragm coupling with long service life and no lubrication and maintenance has been commonly used to replace the drum gear coupling, which not only improves the economic benefits, but also can purify the working environment. In the drive system of rolling mill, the elastic movable pin coupling and fan-shaped block elastic coupling developed in China are adopted, which not only have the advantages of diaphragm coupling, but also have good cushioning effect and lower price.