Steel structure maintenance platform for industrial building

The utility model discloses a steel structure maintenance platform for an industrial building. Comprising a support, a platform arranged on the support, two moving strips in sliding connection with the two sides of the platform correspondingly, a flat plate with the two ends connected with the ends of the two moving strips correspondingly, a connecting plate arranged at the lower end of the flat plate, an air cylinder arranged at the lower end of the platform, and at least two gear body structures, and the transverse plates are placed on the two adjacent blocking body structures, and the upper surfaces of the transverse plates are aligned with the upper surface of the platform. The horizontal extension platform is built, no height difference exists between the built extension platform and an original platform, a complete construction plane is formed, construction can be conveniently conducted at maintenance points with limited vertical space, and the horizontal extension platform has the advantages of being g