Focal length self-adaptive cleaning gun for insulator laser cleaning

The invention discloses a focal length self-adaptive cleaning gun for insulator laser cleaning. Distance information between the cleaning gun and an insulator can be collected through a distance sensor, a sliding table in an automatic focusing system is controlled to move along a guide rail after the distance information is recorded through a storage control system, and it is guaranteed that a focus is located on the surface of the insulator in real time, and a good-temperature cleaning effect is realized; meanwhile, the distance information between insulators of different models and the cleaning gun can be recorded through the storage control system, and during next cleaning, the corresponding distance information only needs to be called according to the different insulator models and output to an automatic focusing system, so that the working efficiency is improved; and moreover, after a monitoring system is in communication connection with a display system on the ground, the working state and the cleaning