
Coupling models serve as fundamental theoretical and practical frameworks for analyzing power transmission and motion coordination between mechanical components, laying a solid foundation for reliable mechanical system operation. These models primarily focus on simulating the connection state, torque transmission efficiency, and displacement compensation characteristics between rotating shafts, covering diverse structural designs adapted to different operating scenarios. Some basic coupling models feature rigid connection structures to ensure precise and synchronous power transmission with zero motion deviation, ideal for stable and low-vibration working environments. In contrast, flexible coupling models incorporate elastic buffer structures to offset axial, radial and angular displacements generated during equipment operation, effectively reducing mechanical vibration and wear. All coupling models are optimized to balance transmission stability, structural durability and environmental adaptability, helping mitigate mechanical friction, avoid energy loss, and extend the overall service life of mechanical transmission systems in various industrial operation scenarios.