Antitheft manhole cover with special opening and locking device

A locking device and manhole cover technology, which is applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as hindering maintenance personnel's work and construction, damage to safety, and easy to rust, etc., and achieve good promotion and application prospects, installation and Easy to use, strong anti-leakage effect

Inactive Publication Date: 2005-12-21
句容市科达技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, underground facilities are stolen, damaged and cause safety hazards
In addition, after some locking devices are opened, the manhole cover cannot be turned over 180°, which will hinder and affect the operation a

Method used

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  • Antitheft manhole cover with special opening and locking device

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Example Embodiment

[0017] The present invention will be further described below in conjunction with the drawings and specific embodiments. The present invention is not limited to the following embodiments.

[0018] With reference to the drawings, the present invention consists of a well cover 4, a support 1, a locking device and a special opener. When the manhole cover is thick and heavy without opening holes and opening notches, it can be pry-proof and anti-theft by its own weight. For better anti-prying and anti-theft, an anti-prying iron edge 3 and a bolt 2 can be designed to be installed around the manhole cover. The locking device only needs to use a T-shaped lock core 14 with a circular opening dovetail groove 5 at the top, and its groove depth is 3~5mm. To fix the lock core 14 in the T-shaped lock hole 10 of the manhole cover 4, it is better to integrate the lock core 14 and the manhole cover 4 to prevent the lock core 14 from moving in the lock hole 10. In order to make it difficult for the ...

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Abstract

The invention discloses anti-theft manhole cover, which consists of maphole cover with lock device, support base and special key. The lock device consists of a T stand lock core with a key-hole, bolt, boss, cross-pin; the special key consists of expanding wall, expanding core and handle. The lock device is simple which prevents the silt jamming with a handily installation and application. Workers will not be interfered after the cover is open for maintenance construction. There is no open hole and gap on the cover and the base. The cover and base associate tightly and is strongly anti-picking, anti-corrosion, anti-foul-release, and anti-frostbite so that rain water, silt and waste will not easily enter the observer well. The cover can not be opened without the special key so to prevent the underground wire facility from damaging, stolen.

Description

technical field [0001] The invention relates to an anti-theft inspection manhole cover applied to various underground pipeline inspection wells, in particular to an anti-theft manhole cover which is simple in structure, easy to install and use, but can only be opened with a special opener. Background technique [0002] Manhole covers of various underground pipeline inspection wells in cities are stolen from time to time, and incidents of personal casualties, vehicle damage, and underground pipeline facilities being stolen and damaged are also commonly reported, resulting in huge losses. Various types of anti-theft manhole covers designed and produced to prevent the manhole cover from being stolen have emerged as the times require. There are hinges or chains to connect the manhole cover and the support together; Check the manhole cover. Though certain anti-theft effect is arranged, still can not effectively prevent well cover from being stolen. Thieve...

Claims

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Application Information

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IPC IPC(8): E02D29/14
Inventor 陈方
Owner 句容市科达技术开发有限公司
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