Anti-theft manhole cover used in municipal engineering

Abstract

The invention belongs to the technical field of municipal engineering manhole covers, and particularly relates to an anti-theft manhole cover used in municipal engineering. The manhole cover comprisesa well wall, an adjustment clamping position mechanism and a balance adjustment mechanism, wherein the balance adjustment mechanism is installed on a boss of the inner round surface of the well wall,and the adjustment clamping position mechanism is installed on the upper side of the balance adjustment mechanism; and functions of prevention of thievery, height adjustment of the manhole cover, andbalance adjustment of the manhole cover are achieved. Clamping strips extending out of adjusting grooves of an adjusting shell can be inserted into adjusting grooves on the well wall to play the roleof defining the up and down movement and the rotating movement of the adjusting shell and a top cover, and the manhole cover can be prevented from being prone to being lifted. The purpose of adjusting the expansion and contraction of a clamping block is achieved by inserting an auxiliary tool into a lock hole of an adjustment shaft to rotate the adjustment shaft.

Description

Technical field [0001] The invention belongs to the technical field of municipal engineering manhole covers, and particularly relates to an anti-theft manhole cover used in municipal engineering. Background technique [0002] At present, the manhole covers used in municipal engineering are often round iron covers, and the manhole covers are generally higher than the road surface. When the round iron covers are crushed by cars for a long time, the shaft wall boss is not flat enough, which will cause the circular iron cover to vibrate. , And the vibration sound is loud, so it will cause damage to the car and the road, and cause sound pollution. In addition, the manhole cover has a simple structure and is easy to be lifted and lost. [0003] The invention designs an anti-theft manhole cover used in municipal engineering to solve the above problems. Summary of the invention [0004] In order to solve the above-mentioned defects in the prior art, the present invention discloses an anti...

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Problems solved by technology

[0002] At present, the manhole covers used in municipal engineering are often circular iron covers, and the manhole covers are generally higher than the road surface. When the circular iron covers are crushed by cars for a long time, the circular iron covers will vibrate due to the unevenness of the well wall bosses. , and the vibration sound is loud, so it will cause damage to the car and the road surface, and cause sound pollution

In addition, the design and structure of the manhole cover is simple, easy to be lifted, resulting in loss

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