CN2270752Y - Theft-proof manhole shaft cover - Google Patents
Theft-proof manhole shaft cover Download PDFInfo
- Publication number
- CN2270752Y CN2270752Y CN 96221871 CN96221871U CN2270752Y CN 2270752 Y CN2270752 Y CN 2270752Y CN 96221871 CN96221871 CN 96221871 CN 96221871 U CN96221871 U CN 96221871U CN 2270752 Y CN2270752 Y CN 2270752Y
- Authority
- CN
- China
- Prior art keywords
- push
- shaft cover
- manhole shaft
- pull
- theft
- 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.)
- Expired - Fee Related
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a theft-proof manhole shaft cover which comprises the manhole shaft cover (1). The manhole shaft cover (1) is provided with a locking hole (8) and a fixing column (6), and a fixing plate (7) is arranged on the fixing column. The fixing plate (7) and a push-pull plate (5) are connected by a polygon push-pull screw rod (9) and a locking nut (11), and both ends of the push-pull plate (5) are respectively provided with a push-pull rod (3) connected by a connecting pin (4). The edge part of the manhole shaft cover (1) is also provided with a supporter (2) of the push-pull locking rod. A locking mechanism which is provided with a simple structure and can only be opened by a special inner polygon open tool is additionally arranged on the manhole shaft cover. Thus the theft-proof manhole shaft cover has the advantages that anti-theft performance is provided, the cost is low, and the disposal of the existing manhole shaft cover device can not be resulted. The utility model can be used for various places that need the manhole shaft covers.
Description
The utility model relates to manhole cover, the well lid that the manhole of particularly various underground pipelines, line project is used.
The manhole lid device that existing manhole is used is many to be made of the manhole cover base, the well lid that separate.Manhole cover base is fixed on well head ground, and well lid directly covers thereon.Such manhole lid device exists often stolen problem of well lid in practicality.Well lid is often stolen, not only causes economic loss but also bring potential safety hazard to the public, the time have the pedestrian to fall in the well accident take place.Stolen in order to prevent well lid, people have designed some and have had the manhole lid device of anti-theft feature.But in these designs, the structure that makes manhole lid device that has is too complicated, and cost is too high; The structure that then will change existing manhole cover base or well lid that has can make a large amount of existing manhole lid devices be thrown aside; Therefore be difficult to accomplish to promote the use of.
The purpose of this utility model is: provide a kind of structure comparatively simple, cost is lower, does not change the anti-stealing manhole cover of just existing manhole lid device structure.It is comparatively simple by install a structure additional on existing well lid, must be realized by the retaining mechanism that special tool could be opened.
Formation of the present utility model: comprise well lid (1), described well lid (1) is provided with lockhole (8) and fixed leg (6), fixed head (7) is housed on the fixed leg (6), and fixed head (7) and draw back plate (5) are connect by polygon push-pull screw (9) and lock nut (11); The two ends of draw back plate (5) are respectively equipped with the push-and-pull locking bar (3) that connects with connecting pin (4), and the limit portion of well lid (1) also is provided with push-and-pull locking bar bracing frame (2).
Described polygon push-pull screw (9) can be that the termination is pentagonal screw rod.
The bottom of described lockhole (8) can be provided with dustproof sheet (10).
Compared with the prior art, the utility model is owing to only installed the comparatively simple retaining mechanism of a structure additional on well lid, and this retaining mechanism must use special-purpose inner polygon opener to open.Therefore having can be antitheft, cost is lower, can not cause the derelict characteristics of existing well lid arrangement.Can be widely used in the place that various need are provided with manhole lid device.
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Accompanying drawing 1 is the utility model structural representation;
Embodiment of the present utility model: formation of the present utility model comprises well lid (1), described well lid (1) is provided with lockhole (8) and fixed leg (6), fixed head (7) is housed on the fixed leg (6), and fixed head (7) and draw back plate (5) are connect by polygon push-pull screw (9) and lock nut (11); The two ends of draw back plate (5) are respectively equipped with the push-and-pull locking bar (3) that connects with connecting pin (4), and the limit portion of well lid (1) also is provided with push-and-pull locking bar bracing frame (2).
Described polygon push-pull screw (9) can be that the termination is pentagonal screw rod.
The bottom of described lockhole (8) can be provided with dustproof sheet (10).
The utility model in use, interior pentagon opener with special use, as special interior five jiaos of sleeves, stretch into lockhole (8), entangling the termination is pentagonal push-pull screw (9), the promptly rotatable draw back plate (5) of twisting sleeve, thus drive push-and-pull locking bar (3), it is stretched into or withdraw from the following bead of manhole cover base.Play the effect of pinning and opening well lid (1).
Claims (3)
1, anti-stealing manhole cover, comprise well lid (1), it is characterized in that: described well lid (1) is provided with lockhole (8) and fixed leg (6), and fixed head (7) is housed on the fixed leg (6), and fixed head (7) and draw back plate (5) are connect by polygon push-pull screw (9) and lock nut (11); The two ends of draw back plate (5) are respectively equipped with the push-and-pull locking bar (3) that connects with connecting pin (4), and the limit portion of well lid (1) also is provided with push-and-pull locking bar bracing frame (2).
2, anti-stealing manhole cover according to claim 1 is characterized in that: described polygon push-pull screw (9) is that the termination is pentagonal screw rod.
3, anti-stealing manhole cover according to claim 1 and 2 is characterized in that: the bottom of described lockhole (8) is provided with dustproof sheet (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221871 CN2270752Y (en) | 1996-09-03 | 1996-09-03 | Theft-proof manhole shaft cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96221871 CN2270752Y (en) | 1996-09-03 | 1996-09-03 | Theft-proof manhole shaft cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2270752Y true CN2270752Y (en) | 1997-12-17 |
Family
ID=33901634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96221871 Expired - Fee Related CN2270752Y (en) | 1996-09-03 | 1996-09-03 | Theft-proof manhole shaft cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2270752Y (en) |
-
1996
- 1996-09-03 CN CN 96221871 patent/CN2270752Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |