| 摘要 |
The present invention relates to a manhole, more particularly, a manhole capable of hiding foreign substances which are inserted inside of the manhole, capable of making fall, discharging below the manhole using an automatic cleaner (22) and discharge of backwater. The disadvantage of an existing manhole is an unpleasant exterior due to foreign substances existing between automatic opening/closing unit and grating and separation of a manhole cover from the grating due to discharge of backwater. Therefore, the present invention forms a sloped surface on the upper end of a housing, prevents separation of grating in case of heavy rain or flooding by installing a backwater discharging opening/closing unit in the center of a sloped stench blockage unit of the sloped surface as shown in 23 , makes foreign substances not pile up and forms an opening/closing unit to open and close by a free fall of a small amount of foreign substances due to the slope of the automatic opening/closing unit which is folded by the small amount of foreign substances. The blockage of stench from sewage on the road, hiding and discharge of foreign substances, discharge of backwater are possible and the backwater opening/closing unit as a prop of the automatic opening/closing unit downwardly opens and closes itself below a degree of 90°. |
