Folding chair frame body seat disc reinforcing device

The utility model discloses a seat disc reinforcing device for a folding chair frame body. The seat disc reinforcing device comprises a seat disc, a chair frame, a reinforcing sheet, a supporting rod,a pull ring and a connecting plate, wherein two connecting columns are respectively arranged on two sides of the seat disc, one end of each connecting column is fixedly connected with the seat disc,the other end of each connecting column is connected with a chair frame bearing, the inner side of the seat disc is fixedly connected with a reinforcing sheet through riveting, eight welding spots arearranged on the reinforcing sheet, a groove is formed in the seat disc, the seat disc is movably connected with a pull plate, and a sliding block is arranged on the pull plate; the chair frame comprises a front supporting leg and a rear supporting leg, protruding blocks are arranged on the outer side of the front supporting leg and the outer side of the rear supporting leg, and the connecting plate is movably connected wit