The utility model relates to the technical field of insulators, and discloses a power distribution network insulator, which comprises a cross arm, a bottom mounting rod, a fixing bolt, a bottom connecting sleeve, a
ceramic column and an insulator umbrella, the bottom mounting rod is vertically embedded in the middle of the cross arm, the fixing bolt is nested above the outer wall of the bottom mounting rod, and the bottom connecting sleeve is fixed at the top of the bottom mounting rod. A
ceramic column is fixedly embedded into the upper portion of the interior of the bottom connecting sleeve, an insulator umbrella is fixed to the outer wall of the
ceramic column, a bottom
ball bearing is embedded into the outer wall of the bottom connecting sleeve, a top connecting sleeve is fixed to the top of the ceramic column, and a top
ball bearing is embedded into the outer wall of the top connecting sleeve. According to the utility model, pollutants such as
bird droppings adhered to the outer wall of the insulator can be automatically cleaned, birds are driven to leave the insulator by reflecting
sunlight at multiple angles through the mirror board capable of automatically rotating, the staying of the birds and the
excretion of the droppings are reduced, and the
impact force can be buffered, so that the bird repelling effect is improved. The
impact force on the insulator umbrella and the ceramic column is reduced, and the service life of the insulator is further prolonged.