High-temperature-resistant maintenance structure capable of being quickly opened

The utility model discloses a high-temperature-resistant maintenance structure capable of being quickly opened, which comprises a maintenance port frame arranged on the surface of equipment, and a plurality of T-shaped compression bolts are hinged to the surface of the maintenance port frame; a closed heat preservation cover body is embedded in the access hole frame, the heat preservation cover body is filled with heat preservation materials, a plurality of clamping plates matched with the T-shaped compression bolts are fixed to the surface of the heat preservation cover body, and the T-shaped compression bolts and the clamping plates are clamped together in the using process; a circle of sealing groove is formed in the embedded connection position of the heat preservation cover body and the access hole frame, and a sealing strip is arranged in the sealing groove; a fixing frame is further arranged on the surface, close to one side of the access hole frame, of the equipment, and a turnover assembly is hinged