| 摘要 |
<p>The present invention provides a complete cable tray system having only six components. The material used for the cable tray system is made up of Hot rolled steel sheets (of order 1.6 to 2 mm thick) fabricated, galvanized, assembled and installed at site. The column (1) used as the supporting part of system as well as the foundation. The rafter (2) is placed over the column (1) with slotted holes in horizontal direction for maintaining the alignment. The tray assembly consists of runners (5), rungs (4) and cap (6) is then bolted over the rafter (2) by the connection plate (3). The tray assembly is put with the vertical slotted holes to adjust the terrain level difference and alignment. The rungs (4) are welded to the runners at the fabrication workshop at regular intervals for supporting the cables, also contains holes on the top surface to help in dissipation of heat from cables. The cap (6) is bolted at site after lying of cables into the tray and protects the cables from the direct environmental attacks like rain, sun, etc. The width of cable tray is developed based on the number of cables to be laid. The span of column support (1) is developed based on the load, width of cable tray, height of tray and soil conditions. Fig. 1.</p> |
