Automatic opening and closing anti-theft manhole cover

Abstract

The invention discloses a novel anti-theft well cover capable of being automatically opened and closed. The novel anti-theft well cover capable of being automatically opened and closed comprises a cover seat, a cover plate, a crank, an air spring, a connecting rod and a lock, and is characterized in that a stopping opening is formed in the top end of the cover seat, a hinging seat I and a hinging seat II are arranged at the bottom surface of the cover plate, a long end of the crank is hinged to the hinging seat I, a short end of the crank is hinged to a hinging seat III arranged on the inner side wall of the cover seat, a pushing rod end of the crank is hinged to one end of the air spring, the other end of the air spring is hinged to a hinging seat IV arranged on the inner side wall of the cover seat, one end of the connecting rod is hinged to a hinging seat V arranged on the inner side wall of the cover seat, the other end of the connecting rod is hinged to the hinging seat II, the cover seat, the cover plate, the crank and the connecting rod form a four-bar mechanism, the air spring provides power so that the functions of automatic opening and closing the cover plate can be achieved, the lock is fixed to the middle of the cover plate, and a locking rod of the lock is inserted into a locking hole in the inner side wall of the cover seat to achieve the anti-theft function. The novel anti-theft well cover capable of being automatically opened and closed is simple in structure, has the functions of automatic opening and closing and theft prevention, and is convenient to use.

Description

technical field [0001] The invention relates to a manhole cover widely used in daily life, in particular to an automatic opening and closing anti-theft manhole cover. Background technique [0002] In real life, all kinds of manhole covers can be seen everywhere. The manhole cover is the closure leading to the top of the entrance and exit of underground facilities. It is necessary to install manhole covers in places where tap water, communications, electricity, gas, heat, fire protection, environmental protection and other public facilities are installed. According to statistics, a city with a population of 500,000 needs 10,000 to 20,000 sets of manhole covers every year. At present, the number of manhole covers in the country is about hundreds of millions of sets. above. However, with the development of economy and society, some people are obsessed with interests, regardless of the safety of others, and try to steal manhole covers to earn economic benefits for themselves. ...

AI Technical Summary

Problems solved by technology

In addition, many manhole covers are relatively thick and heavy, and are not easy to move, which brings great difficulties to installers and maintenance personnel.

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