| 摘要 |
An electric cable tray structure for a building is provided to support a cable protection pipe while joining a support tray to a steel bar by inserting a center support bar into a bar hole formed in the cable protection pipe without fastening with a bolt. An electric cable tray structure for a building includes a steel bar(3), a cable protection pipe(10), a connection hole(20), and a support tray(30). A bolt unit(4) is formed on an upper end of a bar-shaped body of the steel bar. An hinge unit(5) of which center is incised is formed on a lower end of the body. The upper bolt unit is fastened to a nut previously buried in a ceiling slab, and the support tray is fixed to the lower hinge unit. Two round-shaped pipes are combined by a connection unit(12) and forms one pipe body(11). Two pipe holes(14) are formed in the pipe body. Electric cables(8) are inserted into the pipe holes. A bar hole(13) is formed at one side of the connection unit. A hinge hole(33) are formed on an upper end of the a center support bard(32). The center support bar is fixed to the hinge unit of the steel bar via the bar hole with a nut and a bolt. |
