Analyze the balancing factors of the coupling

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发布时间：2021-04-16 11:55

　　If the center of mass or the principal inertia axis of a coupling does not coincide with its rotating axis for various reasons, unbalanced centrifugal inertia force, centrifugal inertia moment, and dynamic deflection (vibration mode) will occur during operation, which is called rotor imbalance. This imbalance will inevitably cause vibration of the shaft system, affecting the normal operation and service life of the machine. The factors causing rotor imbalance are mainly three aspects: asymmetrical rotor shape, manufacturing and installation errors, and uneven material. The first aspect should be solved by calculating and adding balancing mass during the design phase. The latter two aspects can only be solved by balancing on a balancing machine or on-site, determining the magnitude and direction of the rotor imbalance, and then determining the magnitude, radius, and direction of the balancing mass to be added, and adding or subtracting balancing mass to achieve balance. After correction, the coupling may have the following unbalanced factors: 1. Tolerances specified in the balance correction standard. 2. Errors in the balance correction equipment, instruments, and the correction mandrel assembly. 3. Errors caused by reassembly and installation of the coupling on the two connected shafts after balance correction. 4. Significant changes in the rotor imbalance state caused by temperature changes. 1. Imbalance caused by manufacturing tolerances specified in the design specifications of the main coupling parts (half couplings, etc.). 2. Imbalance caused by the eccentricity of the coupling and shaft centering plane (cylindricity of the shaft hole and its coaxiality with the outer edge). 3. Clearance between mating parts in the coupling. 4. Imbalance caused by uneven or asymmetrical distribution of accessories (threaded fasteners, keys, shaft end plates) in the coupling. 5. Imbalance caused by uneven material or uneven wear of the parts in the coupling.

Working environment of the coupling

Maintenance and assembly of diaphragm couplings

Working environment of the coupling

Maintenance and assembly of diaphragm couplings

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