Abstract:Aiming at the problem of uniform magnetization of steel wire rope in service due to vibration, a radial permanent magnetic ring combined excitation structure was proposed. Firstly, according to Biot Savart law, the magnetic field distribution of permanent magnet ring was modeled. Then, the key parameters affecting the magnetic field distribution of the excitation structure and the influence law on the magnetic field distribution were analyzed theoretically, which provided a theoretical foundation for setting the parameters of the excitation structure. Finally, the uniform magnetization effect of the steel wire rope under normal and vibration operation was simulated and analyzed by using the optimized axial permanent magnet ring combination and radial permanent magnet ring combination excitation structures. The results showed that the magnetization effect of the radial permanent magnet ring combination excitation structure proposed is better than that of the axial permanent magnet ring combination excitation structure with the same volume, and it is easier to install and replace the sensor and magnetic concentrator. The magnetizer is simplified, and the influence of vibration disturbance on the uniform magnetization of wire rope is small. This study lays a good foundation for the quantitative evaluation of mine hoisting wire rope damage in service, and it is of great significance to effectively prevent the occurrence of lifting wire rope fracture accidents.