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  Summary:The main structure of the JSB serpentine spring coupling is composed of two half couplings, two half outer covers, two sealing rings and serpentine spring plates.It transfers torque by embedding the serpentine spring into the tooth grooves of the two coupling halves, and the coupling uses serpentine springs to be embedded in the tooth grooves of the two coupling halves to realize the link between the driving shaft and the driven shaft.

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

　　Structural features of JSB serpentine spring coupling:

　　1. Simple structure, convenient assembly and disassembly.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 close, so that the assembly, disassembly and maintenance are simpler than ordinary couplings.

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

　　3. Large range of bearing variable load and safe starting.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 curved surfaces of the teeth, 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 size of the transmitted torque, and its transmission characteristics are variable stiffness.Therefore, it has a greater 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 strong impact load, to a certain extent, protects the safety of the supporting parts.

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

　　5. Good vibration damping and long service life.The coupling is axially embedded in the tooth grooves of the two coupling halves with a serpentine spring sheet, and torque is transmitted through the tooth grooves of the embedded two halves of the coupling.The serpentine spring plate is made of high-quality spring steel, undergoes strict heat treatment, and is specially processed. 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 (such as elastic sleeve pin coupling). Shafts, nylon rod pin couplings) have greatly increased.

　　6. Large installation deviation is allowed.Because 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.

　　JSB type serpentine spring coupling is mainly applicable occasions:

　　1. It is suitable for medium and high-power transmission shafts connecting two coaxial lines, with certain compensation for the relative deviation of the two shafts, vibration reduction and buffering performance, working temperature -30℃~+150℃, and transmission of nominal torque 45~800000N.m.

　　2. Mainly used in rock crusher, crank reciprocating motion, reducer, metallurgy, mining, hoisting machinery, etc.

　　The basic parameters and main dimensions of the JSB serpentine spring coupling: