Porcelain insulator steel cap cleaning brush

The utility model discloses a porcelain insulator steel cap cleaning brush, and belongs to the technical field of electric power maintenance. Comprising a holding rod, a connecting rod, a sleeve and a brush head, a notch is formed in the end of the holding handle, the connecting rod is inserted into the notch and rotationally connected with the holding rod, the sleeve sleeves the bottom of the connecting rod, a clamping groove is formed in one side of the bottom of the connecting rod, a through hole is formed in the side wall of the sleeve and corresponds to the clamping groove, and a button penetrates through the through hole and is inserted into the clamping groove. A pressing plate is arranged on the circumferential side wall of the button, a spring is arranged between the pressing plate and the clamping groove, the brush head is arranged at the bottom of the sleeve, and the brush head and the connecting rod are detachable, so that in the working process, only one holding rod and a plurality of brush heads