| 摘要 |
PROBLEM TO BE SOLVED: To eliminate any welding operation for simple work by attachably/ detachably mounting respective tools for explosion-proof electric equipment and an explosion-proof instrument system, and a conduit on the beam and column of a building using a hanging unit and a bolt nut. SOLUTION: The L-shaped angle of a hanging unit 20 is fixed to a beam 52 using an L-shaped clamp with fixing bolts 26 and nuts 26a. The position (height) thereof is determined, a lower angle 23 is fixed to an upper angle 21 with fixing bolts 26 and nuts 26a, and a square pipe steel 28 on the side of a lighting unit 30 is fixed to the perforated L-shaped angle with an L-shaped pressure angle 27, the fixing bolts 26, and nuts 26a. The lighting unit 30 (square pipe steel 28, conduit 34, positioning box 31, hanging fitting mounting plate 82) is assembled in a plant in advance and carried in a site, the square pipe steel 28 is fixed to the perforated L-shaped angle with the L-shaped angle 27, fixing bolts 26, and nuts 26a. |
