| 摘要 |
PURPOSE: A manhole, and a manhole cover and a manhole body included in the same are provided to reduce noise or the separation of the manhole cover because the manhole cover is stably fixed by the manhole body. CONSTITUTION: A manhole comprises a manhole body(302) and a manhole cover(300). The manhole body comprises a support part, a vertical part(402A) which is extended in the direction crossing the support part, a first protrusion(404), and a fourth protrusion. The first and fourth protrusions are extended from the upper end of the vertical part in the direction crossing the vertical part. The manhole cover has a cover base(410) formed with a groove on the rear surface and a third protrusion(414) protruding from a part of the cover base. The groove is located opposite to a recess, which is formed in the first protrusion, with respect to the center of the manhole body. |
