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Anti-theft noise-proof device

An anti-noise and pinning technology, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as noise from manhole covers

Inactive Publication Date: 2008-09-10
沈佳玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device with convenient installation and maintenance, good anti-theft performance and good anti-noise effect in view of the problems in the prior art that the manhole cover is easy to be stolen and the noise is generated between the cover and the cover seat

Method used

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  • Anti-theft noise-proof device
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  • Anti-theft noise-proof device

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Embodiment

[0021] An anti-theft and anti-noise device, comprising a manhole cover 1 and a cover seat 4, on the manhole cover 1 there are several through grooves 11 perpendicular to the plane of the cover, the through grooves 11 may be in the shape of a "drum" or Square or rectangle, not only can load and unload cylindrical pin 2 with special tool by through groove 11, also can allow rainwater to flow in the sewer by through groove 11; The through hole 13 is a cylindrical through hole; there is a support 41 on the cover seat 4, a through hole 42 is arranged on the support 41, the support 41 is placed in the through groove 11, and the column pin 3 passes through the through hole 13 of the inspection well cover 1 With the through hole 42 on the support 41, a detachable connection device is formed between the inspection shaft cover 1, the column pin 3 and the cover seat 4; this can not only be beneficial to the maintenance of the inspection shaft, but also prevent the inspection shaft cover f...

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PUM

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Abstract

The invention discloses a theftproof and antinoise device. The structure of the invention mainly is that a detachable coupling device is formed among a manhole cover (1), a dowel pin (3) and a cover base (4); a convex-shaped rubber gasket (5) is clamped between the outer side of the lower underside of the manhole cover (1) and the outer side of the upper plane of the cover base (4); the device is used to effectively prevent the manhole cover from being thieved by outlaws and reduce the noise produced between the manhole cover and the cover base by impact.

Description

technical field [0001] The invention relates to an anti-theft and anti-noise device, in particular to an anti-theft and anti-noise device for a manhole cover. Background technique [0002] At present, cast iron manhole covers without anti-theft mechanism are generally adopted on roads and squares, so they are easily stolen by some lawless elements, burying hidden dangers for traffic safety. For this reason, municipal departments in some areas have changed the material of manhole covers from cast iron to plastics. However, ordinary plastics have formed new potential safety hazards due to poor strength and easy aging damage. And adopt high-performance engineering plastics, not only input cost is very high, but also do not solve anti-theft problem. In order to solve the stolen problem of cast iron manhole covers, the municipal departments in some areas adopt chains and iron locks to protect the manhole covers. Therefore, the iron lock cylinder cannot be opened due to corrosio...

Claims

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Application Information

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IPC IPC(8): E02D29/14
Inventor 沈佳玲
Owner 沈佳玲