| 摘要 |
PURPOSE: A cable tray system supporting a large load is provided to prevent a holder from being separated from a rod, thereby eliminating worries of people walking under a cable tray. CONSTITUTION: A cable tray system comprises a holder(200), a first coupling unit, and a nut(300). A coupling hole(205) with a screw thread is formed on the holder so that a rod(100) is coupled with the holder. The first coupling unit is formed on the external surface of the coupling hole in a sawtooth shape. A screw thread is formed on the external surface of the rod and protruded toward the holder. The coupling hole is coupled with the rod. The nut is coupled with the rod by a screw. A second coupling unit is formed on the nut so that the nut is coupled with the first coupling unit. |
