The difference between elastic coupling and plum coupling

　　The characteristics of the elastic sleeve pin coupling: a very widely used non-metal elastic element flexible coupling, its structure is similar to the flange coupling, but the bolt is replaced by a pin with an elastic element, so Can cushion and absorb vibration.The structure is simple, the cost is low, the assembly and disassembly are convenient, and it is suitable for the occasions with high rotation speed, vibration and frequent start-ups with frequent forward and reverse rotation.
　　 The quincunx elastic coupling (national standard GB5272-85) uses a drum-shaped quincunx-shaped elastic body to be placed between the two half-coupling claws to realize the elastic connection of the two half-couplings.When the coupling is working, the drum-shaped elastic petals embedded between the driving and driven pawls in the direction of rotation can fully contact the paws of the half-coupling, which compensates for the deviation of the elastomer petal pitch and the convexity of the half-coupling. The claw distance error of the claws makes the elastic body and the coupling uniformly stressed, which improves the load-bearing capacity of the coupling. At the same time, since the cross section of the elastic flap is drum-shaped, the angular displacement compensation of the coupled shaft is greatly improved.