▎ 摘　　要

NOVELTY - The cover has a mounting seat (1) whose upper end mounted on an inner side cover plate (5), where a lower side of the mounting seat is provided with an extending pipe (2). A fixing ring (3) is connected with the extending pipe, where the fixing ring is mounted on a bottom part of the mounting seat by a fixing bolt (4). A bottom part of a fixing cover is provided with a reinforcement part. A bottom part of a clamping insert is provided with a mounting bayonet. An outer side of a fixing screw rod is mounted with a locking nut. An inner side of an inner sleeve is provided with a bottom plate. A water leakage hole is formed with the bottom plate, where a cover board lock, a fixing buckle, a locking screw rod assembly, a sleeve fixing screw and a locking nut are made of graphene-containing material. USE - High-strength graphene-added casting well cover. ADVANTAGE - The cover greatly increases connection strength and reduces damage parts caused by dangerous when a pedestrian falling so as to improve security of the pedestrian, thus effectively improving interval intensity bear. DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a high-strength graphene added casting well. Mounting seat (1) Extending pipe (2) Fixing ring (3) Fixing bolt (4) Inner side cover plate (5)