Why Does The Coaxiality Of The Coupling Affect Dynamic Balance

Sep 11, 2024

The coaxiality of the intermediate tube directly affects the dynamic balance quality of the coupling, which can lead to misalignment of the coupling installation and also affect the installation, stiffness changes, and performance of the rubber joint. If the coaxiality between the fiberglass pipe and the flange plates at both ends is too large, it will cause excessive imbalance of the transmission shaft, resulting in significant vibration and noise between the generator and gearbox. Therefore, the influence of coaxiality error on the dynamic balance of the transmission shaft should be considered in the design.

There are usually two safety pins installed on the main coupling between the main motor and the main reducer of the rolling mill, which provide overload protection for the main transmission system of the rolling mill. In actual operation, the safety pin breaks when the main transmission torque is far below the set value; When the main transmission torque is much higher than the set value, the safety pin still does not break, which fails to effectively protect the main transmission system of the rolling mill.
Adjust the diameter and transition arc radius of the stress concentration area at the bottom of the safety pin return groove to change its load-bearing capacity, so that the protective torque of the pin reaches the set value. The optimized sales can meet the production needs of the main transmission system of the rolling mill, and the calculation is simple during the optimization process. A coupling is a mechanical transmission component used to connect two shafts or shafts and rotating parts, depending on whether elastic elements are introduced.

The nonlinear stiffness and resistance of the coupling affect the torsional vibration of the system under impact loads. Due to the limitations of its own structure, there are some shortcomings. It is driven by an electric motor to drive the reducer, and then the output shaft of the reducer drives the press roller through the coupling. When the feed rate of the press is uneven, that is, when the load suddenly changes, it is easy to damage the coupling.