manhole cover

Abstract

The invention discloses a manhole cover which comprises a manhole cover body and a manhole cover seat matched with the manhole cover body. A pressure-sensitive sensor is arranged at the matched position of the manhole cover seat and the manhole cover body. Illuminators in a circle are arranged on the manhole cover seat on the periphery of the manhole cover body, and a warning device made of expansion foam is arranged in the manhole cover seat and comprises an air sac. A gas generating chamber and a liquid storage chamber are arranged in the air sac, the liquid storage chamber is provided with a baffle which is controlled by a liquid sensitive switch, and a chemical substance which can generate plenty of gas when reacting with water is filled in the gas generating chamber. The pressure-sensitive sensor can detect whether the manhole cover exists or not, and if not, the illuminators around the manhole cover can emit limit to prompt passers-by. Besides, when water jetted from a sewer and carries away the manhole cover, the carried-away manhole cover can drive a rope to tear off a sealing cover of the warning device, and the warning device can be inflated and expanded to float over the water.

Description

technical field [0001] The invention relates to the technical field of inspection well covers, in particular to an inspection well cover with the function of indicating that the inspection well cover is missing. Background technique [0002] Manhole covers are an indispensable municipal facility on urban roads. At present, manhole covers are often stolen. However, existing manhole covers do not have the functions of timely alarming and prompting passers-by and vehicles to avoid when the manhole covers are stolen, which often causes pedestrians to fall. Injuries in the well, damage to vehicles, and even death in severe cases. In addition, for well-known reasons, more inspection manhole covers are stolen at night. Due to the dim light at night and the difficulty of observation, inspection wells without manhole covers pose a greater threat to passers-by and vehicles. In the event of casualties or vehicle damage, it is often difficult for the relevant departments to deal with t...

AI Technical Summary

Problems solved by technology

[0002] Manhole covers are an indispensable municipal facility on urban roads. At present, manhole covers are often stolen. However, existing manhole covers do not have the functions of timely alarming and prompting passers-by and vehicles to avoid when the manhole covers are stolen, which often causes pedestrians to fall. Injuries in wells, vehicle damage, and even death in severe cases

In addition, for well-known reasons, more inspection manhole covers are stolen at night. Due to the dim light at night and difficult observation, inspection wells without manhole covers pose a greater threat to passers-by and vehicles.

In the event of casualties and vehicle damage, the relevant departments often face many difficulties in dealing with the issue of responsibility and compensation, which has caused a great burden to the country and society.

[0003] In addition, in areas where floods occur, the manhole cover is often washed away by the gushing water from the sewer. Since the manhole cover is submerged in the water at this time, it cannot be seen with the naked eye, and it is easy to cause pedestrians to fall into the manhole.

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