Labyrinth type anti-theft and anti-blocking well cover used for municipal engineering

Abstract

The invention belongs to the technical field of well covers in municipal engineering and particularly relates to a labyrinth type anti-theft and anti-blocking well cover used for municipal engineering. The labyrinth type anti-theft and anti-blocking well cover comprises well-wall labyrinths and an anti-blocking well cover, wherein two completely-same well-wall labyrinths are circumferentially and uniformly distributed on the inner circle surface of the well wall; by the designed well-wall labyrinths, stealers can be prevented from stealing; and due to arrangement of the anti-blocking well cover, foreign matters such as leaves and dust can be prevented from being taken into a well and blocking the well when raining. When a non-staff rotates the well cover, the well cover can move along a wrong channel, and when the non-staff moves a supporting column downwards at a third vertical cavity, due to bad mastering for the force, a locking block arranged in a locking block hole is contacted, and further a cavity in the inner circle surface of the well wall is locked; and when the well cover is moved by a person and is not at the initial position, a staff can find the initial position of the supporting column by matching of a marking block at the upper end of the well wall and a marking block at the upper end of the well cover, so that unlocking is achieved. The labyrinth type anti-theft and anti-blocking well cover has better anti-theft effect.

Description

[0001] Technical field [0002] The invention belongs to the technical field of municipal engineering well covers, in particular to a labyrinth anti-theft and anti-blocking well cover used in municipal engineering. Background technique [0003] At present, the manhole covers used in municipal engineering are often round iron covers. When it rains or there is water on the road, the water on the round iron covers is not easy to clean, and the water that falls into the well often contains impurities. Cause the blockage of well, because circular iron cover is simple in structure, often is stolen by criminals, and after being stolen, easily causes pedestrian and automobile to have an accident, causes casualty and economic loss. [0004] The invention designs a labyrinth anti-theft and anti-blocking manhole cover used in municipal engineering to solve the above problems. Contents of the invention [0005] In order to solve the above-mentioned defects in the prior art, the inventi...

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Problems solved by technology

[0003] At present, the manhole covers used in municipal engineering are often circular iron covers. When it rains or there is water on the road, the water on the circular iron covers is not easy to clean, and the water that falls into the well often co

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