Analysis of the characteristics and advantages of serpentine spring coupling

　　Features of serpentine spring coupling

　　1.Over 36% of the two halves, the coupling is axially embedded with serpentine spring blades.The serpentine spring leaf of the trapezoidal section is made of high-quality spring steel, which has undergone strict heat treatment and special processing.It has good mechanical properties, so that the service life of the coupling is much longer than that of non-metal elastic components (such as elastic sleeve pins, nylon rod pin couplings).

　　2. The tooth surfaces of the two half-coupling devices that are in contact with the reed are curved.When the transmitted torque increases, the spring will deform along the surface of the tooth arc, causing the two half couplings to act on the reed.The force point is close.The contact point between the reed and the tooth surface, that is, the torque changes, changes with the transmission torque, and its transmission characteristic is variable stiffness.Therefore, it has a larger load variable momentum than the general elastic coupling.Due to the buffering effect of the torque on the reeds on the tooth arc, especially when the machine is started or a strong impact load, the safety of the supporting parts is protected on Yujingping in Chengdu.

　　3. The transmission efficiency of the coupling is 99.47%, the short-term overload capacity is twice the rated torque, and the operation is safe and reliable.

　　4 The aluminum alloy shell protects the spring from being thrown out during operation. The shell is filled with butter, which not only has good lubrication, but also eliminates the noise in the reed engagement through the butter damping.

　　5. The whole machine has few parts, small size and light weight.The spring leaf designed with a trapezoidal cross-section is particularly convenient and tight to match the trapezoidal tooth groove, making assembly, disassembly and maintenance easier than general coupling.

　　6. Since the spring blade and the tooth arc surface are in point contact, the coupling can obtain greater flexibility.Under normal operating conditions, it can be installed on radial, angular and axial deviations.

　　Advantages of serpentine spring coupling

　　1. Good damping effect and long service life.

　　2. Wide variable load range and safe starting.

　　3. High transmission efficiency and reliable operation.

　　4.Low noise and good lubricity.

　　The structure is simple, easy to install and disassemble.

　　6. The whole machine has few parts, small size and light weight.

　　7. Allow large installation deviation.

　　If the equipment requires a low-torque gear coupling, the coupling used for replacement is also a low-torque coupling.If the low-torque coupling hub is a keyless hydraulic component, it is easy to install and disassemble, but if there is a key on the shaft, disassembly will be more troublesome.Low torque, the keyed hub can be installed by heating (usually using a stove or oil tank), but usually only use torches for heating during disassembly.Even with great care, the elastic diaphragm coupling may be damaged by local heating.In addition, the flexible element is very similar to the heat sink of the heat sink, which spreads the heat outward from the center of the hub.To solve this problem, engineers from Beijing Tonglian Technology Co., Ltd.Introduced a unique design of hydraulically disassembling the hub with keys.Machine some annular grooves and place the inner diameter of the hub so that the port is connected to the end of the hub barrel.By applying 500 to 1500 pounds per square inch of oil to the port, the hub "bounces" off the coupling shaft like a keyless hydraulic device.This modified design of the keyed wheels is widely used in refineries that do not want to use torches to disassemble the wheels.Question: The diameter of diaphragm couplings is usually larger than that of gear couplings.Therefore, can the diaphragm coupling match the existing coupling cover? When improving the project, should the wind tunnel influence be considered? Answer: When formulating the improved specifications, it is important to check the coupling The size of the cover.When the recommended radial clearance of the outer diameter of the diaphragm coupling is less than 1 inch (25 mm), the wind tunnel effect should also be calculated.The coupling manufacturer has developed a computer program for calculating the temperature increase inside the coupling cover.In addition, the ventilation holes should be improved to dissipate the heat generated by the coupling cover.

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