| 摘要 |
<p>The present invention relates to: a prefabricated cable tray using flame retardant plastic which can be conveniently and efficiently provided when providing a retardant prefabricated cable tray for feeding plurality of cables; and a coupling device therefor. The present invention comprises: a frame having a plurality of coupling holes at both ends in the longitudinal direction; a pair of side panels having a coupling part formed to protrude to the outside of the frame, and positioned in a direction to mutually each other; a plurality of rung members detachably coupled to the coupling part to firmly and mutually support the side panels; and a connection unit detachably coupled with the coupling holes of the frame to firmly couple the plurality of side panels, coupled in the longitudinal direction, to each other.</p> |
