Firstly, four bases are arranged at the approximate position on the ground, and the calves are adjusted to be on a horizontal plane; Insert the lower part of the diagonal brace into the four corners of the outer side of the base, and insert 2 pieces in each corner, totaling 8 pieces; Fix the counter head on the base with screws, and pay attention to the rotation direction of the counter head consistent with the direction marked in the figure; Put a square sleeve on the counter head; Connect the beams on the ground; Connect the two ends of the beam with the two square sleeves on both sides respectively, and then assemble the beam components on the ground; Connect the column truss horizontally, then screw one end on the counter head and the other end on the cross arm, and connect the crane with the cross arm at the same time. The crane is used to lift the lower beam truss. Several people together will slowly erect the column truss. Be careful not to push the column too hard, and then fix it. Fix the screw on the counter head; After the column is erected, hook the hook below the hoist to the beam below through the sling; Four people slowly pull the hoist together and pull the beam to the left and right position of the head; Install lighting and audio equipment on the beam; Four people pull the hoist together and stop at a predetermined height; Fasten one end of the diagonal brace to the column and the other end to the cross brace of the base, thus building the gantry.

First of all, only when the precision of the equipment meets the requirements of the technical specifications of the drawings can micro-welding be carried out. When the weld needs preheating, it must be preheated to the specified temperature before micro-welding. If cracks appear in micro-welding, micro-welding can be re-determined after analyzing the reasons. Then there is the requirement of welding. When assembling the stage, it is necessary to strictly control the energy and the maximum temperature, and it is not allowed to damage the base material on the working face at will. When manual multi-layer and multi-pass welding, the welded joints should be staggered.