ENTRANCE DEVICE OF BEAM FOR BRIDGE

摘要

PURPOSE: An entrance device of a beam for a bridge is provided to make an inspector conveniently go in and out of the beam by simplifying the structure, locking and releasing the entrance device with a simple operation, and opening and closing the device about a hinge-combined part. CONSTITUTION: An entrance device of a beam(100) for a bridge is composed of an entrance hole(110) formed on the beam to inspect facilities in the beam being a steel structure of the bridge; an entrance(120) disposed on the upside of the entrance hole and larger than the diameter of the entrance hole; an inserting tool(10) arranged at the other side of the entrance and combined by a nut; an inserting hole formed on the beam corresponding to the position of the inserting tool and fitted with the inserting tool and the nut; and a locking member(30) inserted and locked to a fixing hole(32) formed at the lower side of the inserting tool. One end of the entrance is movably hinge-combined with the beam of the correspondent entrance hole.