A manhole cover for asphalt pavement and its usage method

By combining a deep-mounted manhole casing, cover, and adjustment mechanism, the problem of elevation deviation between the manhole cover and the asphalt pavement after the manhole is lifted is solved, ensuring the flatness of the manhole cover and the road surface, and improving the comfort and safety of road traffic.

CN116575509BActive Publication Date: 2026-06-30GUANGDONG YINGJU CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGDONG YINGJU CONSTR ENG CO LTD
Filing Date
2023-06-06
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

After the manhole cover is lifted, there is a deviation in elevation between the left and right sides and the asphalt pavement, resulting in poor overall flatness and affecting the comfort and safety of road traffic.

Method used

The system employs a combination of a deep-mounted manhole casing, cover, and adjustment mechanism, including hydraulic jacks, a circular stabilizing tray, and fine-tuning components. The hydraulic jacks are used to raise or lower the cover, and the fine-tuning components are used to adjust the cover to be flush with the asphalt pavement. Reinforcement components are used to increase stability.

Benefits of technology

This design achieves flush alignment between manhole covers and asphalt pavement, improving road comfort and safety, and is simple and efficient to operate.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application relates to the field of municipal engineering, and in particular to a manhole cover for asphalt pavement and its usage method. The manhole cover includes a recessed manhole cylinder, a cover body, and an adjusting mechanism. The recessed manhole cylinder is installed at a pre-drilled hole in the asphalt pavement, with one end abutting against the roadbed and the other end abutting against the opening of the pre-drilled hole. The cover body is detachably connected to the recessed manhole cylinder and is used to seal it. The adjusting mechanism is located inside the recessed manhole cylinder, with one end abutting against the roadbed and the other end abutting against the cover body. The adjusting mechanism is used to lift the cover body. This application effectively solves the problem in related technologies where the elevation of the manhole cover after lifting is often deviated from the asphalt pavement, resulting in poor overall flatness and severely affecting the comfort and safety of road traffic.
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