| 摘要 |
A manhole with an automatic cover for hiding impurities is provided to remove the impurities accumulated on covers by employing a plurality of covers rotating according to amount of the accumulated impurities. A manhole with an automatic cover(7) for hiding impurities comprises a housing, a spring, and inclined covers(6). The housing has front and rear slants(8) and right and left slants(4) at the top. The automatic cover is installed at the top center of the housing. The spring is installed at a shaft of a hinge mounted at the center of the automatic cover. The inclined covers are installed under the right and left inclined slants. |
