Movable liftable large-diameter reinforcement cage welding operation platform

The utility model discloses a movable liftable large-diameter reinforcement cage welding operation platform. Bottom plate, a mounting groove is formed in the right side of the upper surface of the bottom plate; a balancing weight is placed in the mounting groove; a standing platform is arranged on the upper left portion of the bottom plate. A hydraulic press is fixedly mounted on the upper surfaceof the bottom plate and located on the left side of the fixed round pipe, two output shafts of the hydraulic press movably penetrate through the two limiting round holes correspondingly and are fixedly connected with the lower end of a standing platform, universal wheels are mounted at the four corners of the lower end of the bottom plate correspondingly, and a protective surrounding rod is mounted at the upper end of the standing platform. The height of the welding operation platform can be adjusted and controlled according to the on-site welding progress height, the distance between the standing platform and a rein