Connecting lug plate structure for pin shaft connection on steel ring beam

The utility model discloses a connecting lug plate structure connected with a pin shaft on a steel ring beam, which comprises a ring beam and a lug plate, the lug plate is plate-shaped, the lug plate is fixedly welded and connected on a section plane of the ring beam, one end of the lug plate connected with the ring beam is thicker than one end of the lug plate far away from the ring beam, and a connecting hole is arranged on the lug plate. The end, away from the circular ring beam, of the lug plate is an arc section concentric with the connecting hole, the two ends of the arc section extend to intersect with the circular ring beam respectively, the two sides of the lug plate are fixedly connected with two reinforcing plates respectively, the two reinforcing plates are parallel, the distances from the center of the circular ring beam to the two reinforcing plates are equal, and the reinforcing plates are welded to the circular ring beam and the lug plate at the same time. The lug plate is welded to the sectio