Grounding connection device

The utility model discloses a grounding connecting device, which belongs to the technical field of grounding connecting devices, and comprises grounding flat iron and a grounding wire, the upper end of the grounding flat iron is provided with a wiring port, one end of the wiring port is provided with a wiring groove, and the inner wall of the wiring groove is fixedly connected with four conductive metal elastic sheets which are uniformly distributed in a ring shape. One end of the grounding wire is fixedly connected with a connector lug, one end of the connector lug extends into the wiring groove, the four conductive metal elastic pieces are clamped on the outer circumferential surface of the connector lug, the outer circumferential surface of the connector lug is fixedly connected with a bearing, and the outer circumferential surface of the bearing is fixedly connected with an internal thread connector. The internal thread connector is in threaded connection with the outer circumferential surface of the wiri