CN2378439Y

CN2378439Y - Antitheft cover for manhole

Info

Publication number: CN2378439Y
Application number: CN 99203281
Authority: CN
Inventors: 胡广银
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-13
Filing date: 1999-02-13
Publication date: 2000-05-17
Anticipated expiration: 2009-02-13

Abstract

The utility model discloses an anti-theft manhole cover. After covered, the manhole cover is not easy to prize by that an anti-theft groove is arranged on a soleplate, and an anti-theft claw is arranged on an upper plate. The anti-theft claw and the cover are integrally cast and molded, and the cover is not easy to rust. Even when people dredge mud, and the manhole cover is prized, the manhole cover is not easy to steal since the manhole cover and the soleplate are connected by an anti-theft chain. Thus, the utility model has double safety functions, and has the advantages of precise design, simple manufacturing process and reliable anti-theft performance. The utility model which can fundamentally solve urban traps in municipal construction is a good renewal product of the existing manhole cover.

Description

A kind of anti-stealing manhole cover

The utility model provides a kind of anti-stealing manhole cover, relates generally to a kind of device that is used for sink hole or tap water meter valve well.

At present, the lid of sink hole that China is adopted in the city and tap water meter valve well is to be made of the loam cake that is embedded in the base plate in the ground and cover on base plate, because it is fastening that loam cake does not have on base plate, be easy to be pried open, so often there is the stolen phenomenon of well lid to take place.Well lid is stolen, not only causes the loss of national wealth, also has the pedestrian to fall in the sewer and the generation of other traffic accidents, causes very big infringement for the people's life and property.Chinese patent 94235734.5 discloses a kind of anti-stealing manhole cover, its loam cake and base adopt bolt, played antitheft effect to a certain extent, but because the loam cake in countersunk head hole can only seal dust, can not seal water, screw one is met water electrode and is easily got rusty, lure in case give birth to, just can't open, bring very big inconvenience to desilting work, and complex manufacturing technology.The purpose of this utility model is exactly at above-mentioned weak point, and a kind of well lid of dual-safety anti-theft is provided.

The utility model solves by following technical proposals, and two or three grooves are set around base plate, the corresponding antitheft pawl that two or three projectioies are set with the relevant position of bottom plate groove around well lid.

In order to increase safety factor, can between well lid and base plate, link with an iron chains.

The utility model is by antitheft groove is set on base plate, after last covering is provided with antitheft pawl, well lid is covered, be difficult for being pried open, and antitheft pawl is the monoblock cast shaping with loam cake, is not easy to get rusty.Even when desilting and other well lids are levered up,, also be not easy to be stolen, thereby have the dual-safety anti-theft function because well lid and base plate have antitheft iron chains to link.

Description of drawings:

Fig. 1 is the base plate vertical view

Fig. 2 is a upper cover top view

Fig. 3 is the loam cake sectional view

Sectional view when Fig. 4 covers for well lid

The utility model is described in further detail below in conjunction with accompanying drawing:

Two grooves 8 are set, the corresponding antitheft pawl 1 that two projectioies are set around well lid 2 with the relevant position of groove 8 around base plate 6.

Also three grooves 8, the corresponding antitheft pawl 1 that three projectioies are set with the relevant position of groove 8 around well lid 2 can be set around base plate 6.

One and base plate 6 casting all-in-one-piece u type hooks 3 are arranged on base plate 6, one and loam cake 2 casting all-in-one-piece u type hooks 3 are arranged on loam cake 2, door chain 4 two are defended with two u type hooks 3 respectively and are connected together.

On base plate 6, also be provided with reinforcing rib 7, installing hole 5, on loam cake 2, also be provided with word filling place 9, reinforcing rib 7, handle aperture 10, lever up hole 11.

When mounted, with after the groove 8 of base plate 6 is aimed at, well lid 2 can cover, and rotates an angle then with the protruding antitheft pawl 1 of well lid 2, and at this moment well lid 2 just can not pried open easily.Well lid must be rotated to once more the angle of closing when covering, just can pry open, even well lid 2 is pried open, because well lid 2 has iron chains 4 to be connected with base plate 6, well lid 2 also is difficult for being stolen, and therefore has the dual-safety anti-theft function.

Claims

1, a kind of anti-stealing manhole cover is characterized in that: around base plate (6) two or three grooves (8) are set, at corresponding with the relevant position of groove (8) the antitheft pawl (1) that two or three projectioies are set of well lid (2) on every side.

2, a kind of anti-stealing manhole cover according to claim 1 is characterized in that: have an iron chains (4) to be connected between base plate (6) and loam cake (2).