Floor plate supporting structure convenient to disassemble and assemble

The utility model discloses a floor plate supporting structure convenient to disassemble and assemble, which comprises a floor middle plate, a floor rear plate and a supporting beam used for supporting the floor middle plate and the floor rear plate, and the floor middle plate and the floor rear plate are respectively connected with a first turnover plate and a second turnover plate. Sliding columns are welded to the bottom face of the floor middle plate and the bottom face of the floor rear plate correspondingly, the two ends of the supporting beam are welded and fixed to a truss of one of the escalator assemblies, a first opening groove and a second opening groove are formed in the supporting beam, and the first opening groove communicates with the second opening groove; a first lap joint plate and a second lap joint plate are welded to the side wall of the floor rear plate and the side wall of the second turnover plate correspondingly. According to the floor plate supporting structure convenient to disasse