A structure of a sewer cover and a working method thereof

By designing a manhole cover structure with a lifting device and reflective warning signs, the problems of manhole covers being difficult to open and safety hazards when water is deep are solved, achieving reliable flood discharge and safety warning.

CN116180811BActive Publication Date: 2026-06-19XUZHOU UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XUZHOU UNIV OF TECH
Filing Date
2023-03-07
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing manhole covers are difficult to open when the road is flooded, and they are easily washed away by floods. In addition, the lack of warning devices poses a safety hazard.

Method used

A manhole cover structure was designed, comprising a rectangular manhole cover plate, a lifting device, a filtering device, a limiting device, and a safety protection device. The manhole cover is reliably opened and closed through a lifting screw rod, a rotating lever, and a bearing structure, and is equipped with reflective warning signs.

Benefits of technology

It enables timely opening of manhole covers to drain floodwater when the water is deep, preventing the manhole covers from being washed away, and warning pedestrians in the vicinity during the flood drainage process, thus improving safety and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a sewer manhole cover structure and its working method, including a manhole cover structure device, a lifting device, and a filtering device. When draining roads, different drainage methods can be selected according to the amount of water accumulated. When the water accumulation is small, simply opening the manhole cover is sufficient for drainage. When the water accumulation is large, the rectangular manhole cover is raised by the lifting device, allowing water to pass through the filtering device below the rectangular manhole cover before being discharged into the sewer manhole, achieving high-flow-rate drainage. Therefore, it is convenient for both small-flow and large-flow drainage. Furthermore, during high-flow drainage, the rectangular manhole cover is in a raised state, which serves as a warning to surrounding personnel in good daylight conditions, preventing them from approaching the sewer manhole opening without the need for additional warning signs.
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