A COUPLING METHOD FOR CABLE TRAY

摘要

A coupling method of a cable tray is provided to reduce a labor cost by transferring the cable tray in a disassembled state to load a lot of cable trays and to facilitate management of the cable tray by minimizing gaps between a fixing unit and a stopping unit and between the stopping unit and a frame. A coupling method of a cable tray includes the steps of: forming fixing units(13) on frames(11) through chamfering by a press; forming hooking units on support bars(12) through the chamfering by the press; and fixing the support bars to the frames by inserting the hooking units into the fixing units of the frames, wherein the hooking units are formed by being bent from bending lines of the support bars. Two groove units are formed at an upper part of the fixing unit through the chamfering when the fixing unit is chamfered by the press. One opening between the groove units and the other opening at a lower end of the fixing unit are formed by the chamfering. A hole is perforated between the opening units by the chamfering.