Air-insulated busway hot-dip galvanized tray bridge coating surface should be uniform, no burrs, over-burning, ash, scars, local galvanization and other defects, must not affect the installation of zinc, the plating of the thread should be smooth; bolted The piece should be able to be screwed in. The spray bridge should be smooth, smooth, uniform, non-skinned, and free of bubble blisters. The surface of the bridge weld is uniform, and there must be no defects such as leakage welding, cracks, slag inclusion, burn through, and crater. All types of bending and attachment specifications shall be suitable for engineering layout conditions and shall be matched with pallets and ladder frames; the specifications of supporting hangers shall be selected according to the specifications of pallets and ladder frames, and shall meet the requirements of loads. According to the construction drawing, determine the starting position to the end position, mark the direction along the drawing, find the horizontal, vertical, and bend through, and use the powder line bag or the drawing line to follow the bridge to strike the wall, ceiling, ground, beam, plate, column, etc. Draw lines, and draw the position of the branches, hangers, and brackets evenly.

 

 

 

 

1. The steel used for the air-insulated busbar support hanger and hanger shall be straight and without significant distortion. The length and length deviation after cutting should be within 3mm, and there should be no curling or burr at the incision.

 

2. Air-insulated busbar steel brackets and hangers shall be welded firmly and without significant deformation. Brackets and iron fittings with a thickness of more than 4 mm before welding shall be beveled, the welds shall be evenly leveled, the length of welds shall meet the requirements, and no cracks shall occur. Defects such as undercut, sag, and soldering.

 

3. Air insulated busway slot According to the load bearing the bracket, select the corresponding expansion bolt and drill bit; the length of the selected drill bit should be greater than the length of the expansion sleeve. The depth of the hole should be buried in the wall or in the top plate. As standard, the surface is flush. The debris in the cleaned hole should be removed first, and then the expansion bolt should be knocked into the hole with a wooden hammer. The sleeve should be flush with the surface of the building, the end of the bolt should be exposed, and the wire of the bolt must not be damaged when struck. buckle. After burying the bolts, use a nut and a corresponding washer to fasten the bracket or hanger directly to the metal expansion bolt.