The present invention describes an insulator stack cleaner to remove dust and dirt from power line transmission insulators. The cleaner autonomously cleans an insulator stack. The cleaner has two cleaning cups that counter-rotate during cleaning. The cleaner moves along an insulator stack by opening one cleaning cup while the other cup is locked onto an insulator, then the cleaner's transitional motors somersault the open cup onto the next insulator in the stack, and the open cup subsequently closes around the next insulator. A rack and pinion mechanism rotates the closed cup around an insulator and a cam mechanism opens and closes the cup around an insulator. Bristles on the cleaning cups scrub the insulators. The cleaner can be installed onto an insulator stack by a drone.

A shed housing is disclosed. The shed housing covers an insulator including at least one shed. The shed housing includes a receiving cavity allowing an upper surface and a lower surface of the shed to be received in the receiving cavity. The shed housing is provided with a mounting hole through which the insulator passes, and an opening corresponding to the mounting hole. The opening communicates the mounting hole with an outer edge of the shed housing. The mounting hole communicates with the receiving cavity. A first connecting portion and a second connecting portion cooperating with the first connecting portion are arranged respectively on both ends of the opening. When the first connecting portion is connected to the second connecting portion, the shed housing is closed along a circumferential direction. The shed housing is able to receive the entire piece of shed, and can be assembled on the shed without any additional connecting components, which is convenient and high-efficient and has good effect on preventing pollution flashover and rain flashover.