Manhole cover which is resistant to theft, noise, sedimentation and reverse gushing and opened in hidden mode

Abstract

The invention relates to the technical field of construction engineering pipelines. A manhole cover is composed of a manhole cover body, a base, pawls, cover opening ejector rods, elliptical reverse thread locking heads, unlocking opening reverse thread rods and the like. A trapezoid stopping ring on the bottom surface of the manhole cover body is sleeved with a pressure-proof rubber ring for preventing noise. When the manhole cover body is installed and placed on the base, the pawls are pressed down by the trapezoid stopping ring, and elastic force of ejector rod springs is transmitted to the pawls through levers and pawl connection rods to abut against and lock the trapezoid stopping ring so that an antitheft effect can be achieved. When the manhole cover body is opened, reverse thread pressure proof rubber plugs, gib headed keys and the elliptical reverse thread locking heads are taken out, the unlocking opening reverse thread rods are screwed into elliptical reverse thread locking holes, conical funnels and conical ejector rods are sleeved and connected, the levers are pushed, and the pawls are receded and unlocked through the pawl connection rods; and at the moment, the levers are just jacked to the upper ends of long-strip-shaped opening unlocking holes, and the manhole cover body is opened in a hidden mode by the pushing force of the unlocking opening reverse thread rods through the levers and the cover opening ejector rods. The contact surface between the manhole cover and a road is increased in a multilayer mode through a pawl mechanism box, a pressure-proof rubber ring flange face and a pavement flange face so that sedimentation can be prevented.

Description

technical field [0001] The invention relates to the technical field of construction engineering pipelines. The anti-theft, anti-noise, anti-settling, anti-backflow, and hidden opening inspection well covers are applied to inspection wells of various sizes and shapes in construction engineering pipelines. Background technique [0002] The inspection well is the entrance and exit of various underground facilities such as roads, communications, water supply and drainage, electricity, gas, heat, fire protection, sanitation, communities, schools, etc. The inspection well cover is the gatekeeper for entering and exiting the inspection well, and it is an indispensable facility in the pipeline of construction projects. With the rapid development of urban modernization, the number of various inspection wells is also increasing sharply. It not only needs to ensure the smooth flow of roads and the safety of traffic pedestrians, but also reflects the image of the city to a certain extent...

AI Technical Summary

Problems solved by technology

In the current manhole cover market, there are anti-theft manhole covers with various methods such as iron chains, hinge connections, counter-rotation, bolts blocking holes, lock keys, etc., but their anti-theft performance is still very low, and thieves can easily destroy the connection. In case of heavy rain, the phenomenon of backflow of the urban drainage inspection well will easily wash away the inspection well cover, resulting in the missing of the inspection well cover, and it is difficult to be found when it is submerged in floods. The inspection well becomes a trap, resulting in casualties. Although there are Some of them are equipped with anti-falling nets, but they still leave serious safety hazards for vehicle traffic and pedestrian traffic; In the end, it was difficult for me to open it myself, and I couldn't enter the inspection well to work.

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