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How to avoid accidents in use of JSB serpentine spring coupling
2022-11-02

During the use of JSB serpentine spring coupling, there will be some failure problems. The problems that may occur in these failures are mostly vibration, so Xiaobian will explain to you how to solve this problem. This coupling The advantages of the coupling are small radial size, large bearing capacity, and long shafting transmission under low-speed and heavy-load conditions, and the dynamically balanced gear coupling can be used for high-speed transmission, such as the shafting transmission of gas turbines.

JSB serpentine spring coupling has few parts, small volume and light weight. It is designed to have a trapezoidal cross-section spring piece and trapezoidal tooth slot to match very conveniently and tightly, so that assembly, disassembly and maintenance are easier than ordinary couplings. Since the angular compensation of the drum gear coupling is greater than that of the straight gear coupling, the drum gear coupling is generally used. The straight gear coupling is an outdated product, and the user should try not to choose it. Measure the runout between the fan and the motor side journal without unfastening the JSB serpentine spring coupling cover, then unfasten the serpentine spring coupling cover to measure the alignment of the two rotors, and then remove the serpentine spring Measure the alignment of the two rotors. Since the spring piece is in point contact with the tooth arc surface, the coupling can obtain greater flexibility. It can be installed under the condition of radial, angular and axial deviation at the same time.

For JSB serpentine spring coupling, through the above analysis, some related faults such as the mass unbalance of the fan impeller, the unbalance of the fan rotor, bearing damage, poor installation and lubrication, or damage to the ventilation part of the fan have been ruled out. The vibration of the bearing at the driving end of the fan is larger than that of the bearing at the non-driving end. The vibration of the bearing at the driving end of the fan is similar in size and opposite to that of the bearing at the driving end of the motor. The horizontal, vertical and axial vibrations of each bearing are larger, and the double frequency component in the frequency spectrum is obvious. Such phenomena show that the two fans may have the problem of misalignment between the fan rotor and the motor rotor. Fault confirmation and processing process The fault confirmation is determined after discussion, and the alignment of the fan rotor and the motor rotor is reviewed.

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