Sliding block type wedge-shaped lightning protection downlead connecting device

The invention discloses a sliding block type wedge-shaped lightning protection downlead connecting device which comprises a connector connected with a power transmission tower, a graphite belt connected with a grounding grid and a wedge-shaped conductive sleeve connecting the connector and the graphite belt. The outer wall of the wedge-shaped conductive sleeve is provided with a circular tube for insertion of the galvanized round steel, one end, far away from the wedge-shaped conductive sleeve, of the galvanized round steel is connected with the connector, and the small-diameter end of the wedge-shaped conductive sleeve is used for penetration of one end, far away from the grounding grid, of the graphite belt and penetrates out of the small-diameter end of the wedge-shaped conductive sleeve again, so that a bending section is formed on the graphite belt in the wedge-shaped conductive sleeve. A wedge-shaped clamping plate is arranged in bent section of graphite belt, and heat shrink tubes for sealing wedge-sha