
The diagram of couplings visually illustrates the structural principles and functional logic of core mechanical components used to connect rotating shafts in mechanical systems. Couplings are primarily designed to transmit torque and rotational motion between adjacent shafts while accommodating minor shaft misalignments caused by manufacturing errors, installation deviations, or operational vibrations. Typically divided into rigid and flexible types, they serve distinct mechanical scenarios. Rigid couplings ensure precise shaft alignment and stable power transmission for high-precision equipment, while flexible couplings effectively buffer shock loads, reduce mechanical vibration, and compensate for axial, radial and angular misalignments during operation. By standardizing structural layouts and assembly relationships, coupling diagrams help technicians understand installation norms, judge operating states, and optimize mechanical transmission stability, laying a solid foundation for the reliable and long-term operation of various industrial mechanical devices.