Serpentine spring coupling has good mechanical properties

The main structure of the serpentine spring coupling is composed of two half couplings, two half outer covers, two sealing rings and a serpentine spring sheet.It transfers torque by embedding the serpentine spring into the tooth slots of the two coupling halves, and the coupling uses serpentine spring sheets to be embedded in the tooth slots of the two coupling halves to realize the link between the driving shaft and the driven shaft.During operation, the driven end is driven by the axial force of the active end tooth facing the snake spring to transmit torque, which largely avoids the occurrence of resonance phenomenon and the elastic variable generated by the reed when transmitting torque , So that the mechanical system can obtain a better damping effect, with an average damping rate of more than 36%.

Serpentine spring coupling characteristics

1. The coupling is axially embedded in the two halves by a serpentine spring leaf for more than 36%.The serpentine spring leaf of the trapezoidal section is made of spring steel, which has undergone strict heat treatment and processing. It has good mechanical properties, so that the service life of the coupling is much longer than that of the non-metal elastic element coupling.

2. The tooth surfaces of the two half couplings in contact with the reeds are arc-shaped. When the transmission torque increases, the springs will deform along the tooth arcs, so that the force points of the two half couplings on the reeds are close .The contact point between the reed and the tooth surface, that is, the change of torque, changes with the magnitude of the transmitted torque, and its transmission characteristics are variable stiffness.Therefore, it has a larger load variation than general elastic couplings.The cushioning effect produced by the transmission force when the reed deforms along the tooth arc, especially when the machine is started or under impact load, has the performance of protecting the supporting parts to a certain extent.

3. The transmission efficiency of the coupling is determined to reach 99.47%, and its short-term overload capacity is twice the rated torque.

4. The aluminum alloy casing protects the spring from being thrown out during operation, and the casing is filled with butter, which not only makes the lubrication good, but also makes the noise when the reed engage is absorbed by the butter damping.

5. The whole machine has few parts, small size and light weight. The spring leaf designed as a trapezoidal cross-section and the trapezoidal tooth groove are particularly convenient and tight, so that the assembly, disassembly and maintenance are easier than ordinary couplings.

6. Since the spring leaf and the tooth arc surface are in point contact, the coupling can obtain greater flexibility.It can be installed to work normally under conditions of radial, angular and axial deviations at the same time.