Lightning protection device for high-voltage overhead insulated line

The invention discloses a lightning protection device for a high-voltage overhead insulated line, and the device comprises a plurality of groups of supporting frames disposed among a plurality of groups of cables, the end part, corresponding to the plurality of groups of cables, of each group of supporting frame is rotatably provided with a fixing ring, and the other end of each group of fixing ring is fixed to the corresponding supporting frame through a bolt. Mounting cavities are formed in the axes of the supporting frames, grounding assemblies are mounted in inner cavities of the mounting cavities, every two adjacent grounding assemblies are connected through a wire connector, and each supporting frame is provided with a lightning protection assembly electrically connected with the corresponding grounding assembly. According to the lightning protection device for the high-voltage overhead insulated line, the grounding assembly, the lightning protection assembly and the positioning assembly are installed o