Coupling failure formation and diaphragm coupling lubrication

　　The sprocket coupling can be made into two types with protective cover and without protective cover. The main function of the cover is to protect the coupling from being knocked out when it breaks. Secondly, it can reduce The role of noise.Several reasons for the failure of sprocket coupling:
　　1. Overload, the use of the coupling exceeds the load;
　　2. Excessive wear of the chain or sprocket after long-term use;
　　The characteristics of the sprocket coupling: the chain coupling has a simple structure (composed of four pieces), easy to assemble and disassemble, the two connected shafts do not need to be moved during disassembly, compact size, light weight, compensation capability, and installation accuracy requirements Not high, reliable work, long life, low cost and other advantages.Roller chain couplings can be used for shafting transmissions of textiles, agricultural machinery, lifting and transportation, engineering, mining, light industry, chemical industries and other machinery. They are suitable for high temperature, humidity and dusty environments. They are not suitable for high speeds and severe impacts. In the case of load and transmission of axial force, the chain coupling should work under the conditions of good lubrication and a protective cover.
　　During the effective service life of the diaphragm coupling, the wedge-shaped clearance surfaces that are inclined to each other need to be maintained, lubricated, and fed from the large port to the small port.The two surfaces have sufficient relative motion speed, the fluid has sufficient viscosity, and sufficient oil supply is required.In the maintenance process, it is important to grasp the basic scope of hydrodynamic lubrication, which is also the theoretical basis of sliding bearing design.
　　The diaphragm coupling can actively compensate the axial, radial and angular offset caused by the motor, as well as the influence caused by factors such as manufacturing error, installation error, bearing deformation and temperature rise.Diaphragm coupling is a metal elastic element in flexible coupling. The advantages of driven torque transmission, elastic vibration, no noise, and no lubrication are the ideal products to replace gear couplings and general couplings.
　　The diaphragm coupling bolt connection does not need to be threaded on the connecting piece, the use is not restricted by the connecting piece, the structure is simple, and the disassembly and assembly are convenient.Stud bolts can be used in occasions where bolts cannot be used due to structural restrictions, but a compact connection structure is required.The bolt connection does not have a nut and has a smooth exposed surface, but it is not suitable for frequent disassembly and connection to avoid damage to the threaded hole.