Power tower lightning arrester

The utility model discloses a power tower lightning arrester which comprises a fixing plate, a clamping mechanism is arranged on the back surface of the fixing plate, a limiting ring is arranged on the front surface of the fixing plate, a rotating rod with external threads is arranged in the limiting ring, and the right end of the rotating rod penetrates through the left side wall of an adjustingbox and can be in threaded connection with a base arranged on the inner side wall of the adjusting box. Through holes are formed in the top and the bottom of the adjusting box, jack seats are arrangedoutside the through holes, a plurality of connecting supports are arranged on the side face of the lower portion of the lightning receiving rod, locking mechanisms capable of being fixed to the bottom of the adjusting box are arranged on the connecting supports, and insulating connectors are fixedly arranged on the right side face of the fixing plate. A connecting hole is formed in the left sideface of the adjusting box,