Aiming at the power supply wiring problems caused by the rotating state of the monitoring equipment for rotating mechanical components in industry, as well as the problems of easy wear and short service life existing in the traditional conductive slip ring technology, a new type of wireless power supply solution is proposed. First, the overall system planning was completed, and the layout method and operation mode of the wireless energy transmitter on the rotor were established. By constructing the theoretical model of the LCC-S type magnetic coupling wireless power transmission system, the energy transmission characteristics under rotating conditions were mainly studied. The energy balance criterion that the periodic transmission energy should be greater than the load energy consumption was innovatively proposed, and the static indicators of the system were designed based on this. Through the design of coupling coils and hardware circuit systems, a wire-less power supply device has been successfully developed. Finally, the effective operation of the device under simulated rotating conditions was verified through a self-built rotating experiment platform. The research provides an innovative technical path for the wireless power supply of monitoring equipment for rotating mechanical components.