▎ 摘　　要

NOVELTY - The utility model claims a steel-free lining type fire-resistant window; the outer side of the window frame is provided with a fireproof plate sleeve through a mounting groove; the inner part of the window frame is provided with a reinforcing support plate and a fireproof heat preservation filling material through the supporting plate cabin; the inner side of the window frame is provided with a mounting groove; the inner side of the mounting groove is provided with a graphene expansion plate through the expansion chamber; a push plate and a crushing nail; between the expansion chamber and the mounting groove is provided with a nail hole; two sides of the mounting groove is provided with a mounting mechanism; The utility model replaces the traditional steel lining by reinforcing support plate matched with fireproof heat preservation filling material in three groups of support plate cabin; the weight of the light window frame makes the bearing capacity better; the fireproof plate sleeve is matched to make the window frame fire resistance better; at the same time, the fire is; the graphene expansion plate set at four corners of the window frame is heated and expanded, matched with the crushing nail to extrude the fragile corner of the toughened glass, automatically crushing, opening the convenient safety channel, convenient for escaping and convenient rescue.