CN2124257U - Round theftproof metal manhole cover device - Google Patents
Round theftproof metal manhole cover device Download PDFInfo
- Publication number
- CN2124257U CN2124257U CN 92217183 CN92217183U CN2124257U CN 2124257 U CN2124257 U CN 2124257U CN 92217183 CN92217183 CN 92217183 CN 92217183 U CN92217183 U CN 92217183U CN 2124257 U CN2124257 U CN 2124257U
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- CN
- China
- Prior art keywords
- cover plate
- theft device
- cage
- well covers
- cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model relates to an anti-theft device for well covers, which is suitable for inspection wells in the underground pipeline engineering, control valve wells, etc. for water supply and discharge, coal gas, communication, etc. The anti-theft device for well covers is characterized in that the lower part of a cover plate is provided with an inner buckle, and the inner ring of a cover seat is provided with a ring gap; the upper part of the cover plate is provided with three holes arranged in a straight line. The heavy metal cover plate can be opened only by a special cover opening wrench made according to the three holes of the cover plate so that the anti-theft device for well covers achieves favorable anti-theft effect. The anti-theft device for well covers has the advantages of simple and reasonable structure, easy production and refit, low cost and convenient assembly and disassembly, and is an ideal anti-theft device for well covers.
Description
The utility model relates to the circular metal well lid of manhole in the professional underground pipeline project such as cities and towns plumbing, coal gas, communication, by-pass valve control well etc.
Existing manhole lid device is to adopt the circular casting iron well lid of flat lid type, comprise that cover plate and cage are separated from each other formula, and the cage outer shroud does not have the angle tooth, can not with the pavement concrete anchoring, cover plate and cage are all stolen easily, bring some losses economically to country, also bring some unsafe hidden danger to people's lives.
The purpose of this utility model is to provide a kind of anti-stealing manhole cover device that overcomes above-mentioned defective.
The technical solution of the utility model is: do not increase or the former design technology cost basis of less increase on, adopt casting and welding procedure or transform original well lid structure by this, make it to play good antitheft effect.This anti-stealing manhole cover mainly is made of two parts, i.e. cage and cover plate.Three holes that on the cover board are provided for opening, three holes are symmetrical arranged under the cover plate in two and buckle on the cover board in line, in cage, be provided with on the ring simultaneously with cover plate on interiorly buckle corresponding ring and lack, the angle tooth is set on the cage outer shroud, its angle tooth when mounted with the pavement concrete anchoring.When cover plate places on the cage, be to lack down by the corresponding ring that is buckled in two on the cover plate on encircling in the cage, again by special-purpose opening instrument rotation cover, ring interlock in button and the cage in making.
Below in conjunction with accompanying drawing the utility model is described in detail.
Figure 1A is a mounting structure schematic diagram of the present utility model;
Figure 1B is a plan structure schematic diagram of the present utility model;
Fig. 2 is an opening spanner structure schematic diagram.
Referring to Fig. 1 and Fig. 2, the outer shroud (6) of cage (7) is provided with angle tooth (4), and cage (7) is provided with ring mark (2), and angle tooth (4) is anchored in the pavement concrete, and the interior ring (5) of cage (7) is provided with ring and lacks (3); Be provided with under the cover plate (9) in two and buckle (8), cover plate (9) is provided with three holes (1) that are used to open, and three holes on the cover board in line.Accompanying drawing 1 is seen in the concrete installation of this anti-stealing manhole cover.Leave certain frame when encircling (5) installation in the cage and hang the borehole wall, cage outer shroud (6) has angle tooth (4) to be anchored in the pavement concrete, and button (8) leaves certain space after encircling (5) interlock with cage is interior in the well lid.Because cover plate and cage (7) are tied by interior linking, and open well lid and just have only rotary well cover plate (9), make buckle in the cover plate in (8) and the cage ring ring scarce (3) identical after, can open.And because cover plate (9) is heavier, make the cover plate rotation must overcome the frictional force between the ring (5) in cover plate and the cage, and the contact surface of cover plate and cage is more coarse, its frictional force is quite big, have only by cover central hole to make cover plate break away from the cage matsurface, rotate with corresponding opening spanner (accompanying drawing 2) and just can open.
The concrete structure of opening spanner is according to three special spanners that the hole is designed on the cover plate (9), and it is made up of loop bar (13), latch (10) and center latch (12).Center latch (12) comprises blade-shaped pin pin (11), suspension ring (14) and tightrope section (15).The characteristics of this opening spanner are to utilize fulcrum and the center of circle of center latch (12) as the well lid rotation, and have a tightrope section (15) to make it activity freely in the middle of the center latch (12).Pivot point in addition and effect will be opened well lid just very difficult.
In conjunction with Fig. 1 and Fig. 2: during dismounting, earlier ［ can cast affixed the latch (10) of opening spanner with spanner loop bar (13), also can be threaded with spanner be inserted in loop bar (13) and cover plate (9) corresponding perforations, use center latch (12) to be inserted in opening spanner and word hole, cover plate center " " again, rotate an angle, make the blade-shaped pin pin (11) and clamping at the bottom of the cover plate of center latch (12), the suspension ring (14) that are inserted in center latch (12) with crowbar are gone up sled, cover plate (9) is lifted on slightly, rotate loop bar (13), cover plate is screwed into three holes (1) and cage ring mark (2) in line the time, and well lid has just been opened.
The utlity model has following advantage: simple and reasonable, make easily, also can press this transformation on existing well lid arrangement basis, process costs and former well lid and cage are suitable, and the opening instrument resembles a simple key, and installing/dismounting is also more convenient.
Claims (1)
1, a kind of circular metal anti-stealing manhole cover device, it is to be made of cage and cover plate two parts, it is characterized in that:
A, described cover plate (9) are provided with three holes (1) that are used to open, three holes (1) on the cover plate (9) in line, are arranged with under the cover plate (9) and buckle (8) in two.
The interior ring (5) of B, described cage (7) is provided with the corresponding ring of interior button the (8) scarce (3) with cover plate (9), and cage outer shroud (6) is provided with the angle tooth (4) with the pavement concrete anchoring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92217183 CN2124257U (en) | 1992-06-18 | 1992-06-18 | Round theftproof metal manhole cover device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92217183 CN2124257U (en) | 1992-06-18 | 1992-06-18 | Round theftproof metal manhole cover device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2124257U true CN2124257U (en) | 1992-12-09 |
Family
ID=4961264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92217183 Granted CN2124257U (en) | 1992-06-18 | 1992-06-18 | Round theftproof metal manhole cover device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2124257U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141320A (en) * | 2014-04-02 | 2014-11-12 | 徐发达 | Anti-theft lock inspection well lid capable of being mounted and dismounted through special key only |
-
1992
- 1992-06-18 CN CN 92217183 patent/CN2124257U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104141320A (en) * | 2014-04-02 | 2014-11-12 | 徐发达 | Anti-theft lock inspection well lid capable of being mounted and dismounted through special key only |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |