L-shaped bolt fastening structure for upright fastening

An L-shaped bolt coupling structure comprising:

• a lower structure which is positioned below equipment of an industrial facility and in which a hole for fastening is formed;
• an L-shaped bolt inserted into the hole of the lower structure and including an upper vertical portion on which a thread is formed and a lower horizontal portion which is formed to extend from a lower end of the upper vertical portion through a bent portion;
• a fall-prevention washer which has a ring shape, is fastened to the L-shaped bolt, and is supported on an upper surface of the lower structure to prevent the L-shaped bolt from falling below the lower structure;
• a bracket disposed on the lower structure and having a long hole into which the L-shaped bolt is inserted;
• an anti-loosening washer and a fixing nut disposed on the bracket and sequentially fastened to the L-shaped bolt;
• and
• a coupling long hole washer fastened to the L-shaped bolt and disposed between the bracket and the anti-loosening washer.