(1) Material and specifications: The bottom layer of the material and specifications is 50mm × 100mm rectangular cold -bent and empty heart tube. The wall thickness is not less than 4mm. The main keel is 40 mm × 40mm galvanized square tube. × 1200mm, the height is 3000mm, the length of the suspension point is 400mm, and the bottom layer and the upper main dragon skeleton form a triangular cone. The electric gourd device is installed on the frame. (2) The connection of this device adopts a single -sided welding of 422 boxes that meet national standards, and its material shall comply with the current national standards. (3) The total weight of the bottom layer weight is 80kg. The horizontal movement of the foot wheel is used. Each can be carried by not less than 2T, and the pressure of not less than 1.5T when moving. The movement of the movement is equipped with a brake function. (4) The welding of the mobile hanging operation platform must meet the requirements of the steel structure welding specification.