Improved heightening device based on scaffold for building construction

The utility model discloses an improved heightening device based on a scaffold for building construction, and relates to the technical field of building auxiliary construction equipment. According to the technical key points, the folding device comprises a base, a plurality of folding devices are arranged in the base, a lifting mechanism is arranged above the base, a working platform is connected above the lifting mechanism, each folding device comprises a roller, one side of each roller is connected with a first rod piece, the first rod piece is connected with a worm gear, the first rod piece is connected with a second rod piece, and the second rod piece is connected with a first sliding block; a third rod piece is arranged in the first sliding block, limiting plates are connected to the two ends of the third rod piece, a worm is arranged on one side of the worm gear, supports are connected to the two ends of the worm, a threaded rod is connected to the worm gear, a rocker is connected to the threaded rod, a