CN204690794U - A kind of anti-stealing manhole cover - Google Patents
A kind of anti-stealing manhole cover Download PDFInfo
- Publication number
- CN204690794U CN204690794U CN201520275629.7U CN201520275629U CN204690794U CN 204690794 U CN204690794 U CN 204690794U CN 201520275629 U CN201520275629 U CN 201520275629U CN 204690794 U CN204690794 U CN 204690794U
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- CN
- China
- Prior art keywords
- cavity
- retainer spring
- opening
- pedestal
- manhole cover
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of anti-stealing manhole cover, comprise pedestal and cover plate, in described cover plate, there is cylindrical chamber, the first end of described cavity has opening up extract opening, second end of described cavity has downward opening fore shaft, second end of described cavity is provided with lock body, described lock body comprises the piston body hooking body and be positioned at cavity, described hook body hooks on described pedestal through fore shaft, retainer spring is provided with in described cavity, first end and the piston body of described retainer spring lean, and the second end of described retainer spring is fixing on the cover board.Because the gas of transferring in cavity makes piston body move to inside cavity by vacuum pump, impel and hook body disengaging pedestal, realize unblanking, use vacuum pump sound of unblanking larger, general robber dare not use, and this manhole cover anti-theft is very competent, avoids a large amount of well lid to be equipped with the trouble of a large amount of key.
Description
Technical field
The utility model belongs to municipal technical field, relates to a kind of anti-stealing manhole cover.
Background technology
It is antitheft that well lid of the prior art all adopts common lockset to carry out usually, and lockset is easily stuck up, and the ability of unblanking of robber is also all very strong now, and lockset is lofty affects evenness of road surface on well lid.
Summary of the invention
The utility model proposes a kind of anti-stealing manhole cover for prior art Problems existing, and object is the anti-theft capability improving well lid.
The utility model is achieved in that
A kind of anti-stealing manhole cover, comprise pedestal and cover plate, it is characterized in that, in described cover plate, there is cylindrical chamber, the first end of described cavity has opening up extract opening, second end of described cavity has downward opening fore shaft, second end of described cavity is provided with lock body, described lock body comprises the piston body hooking body and be positioned at cavity, described hook body hooks on described pedestal through fore shaft, be provided with retainer spring in described cavity, first end and the piston body of described retainer spring lean, and the second end of described retainer spring is fixing on the cover board.
Preferably, the mouth wall of described extract opening is helicitic texture.
A kind of anti-stealing manhole cover provided by the utility model, because by vacuum pump, the gas of transferring in cavity makes piston body move to inside cavity, impel and hook body disengaging pedestal, realization is unblanked, use vacuum pump sound of unblanking larger, general robber dare not use, and this manhole cover anti-theft is very competent, avoids a large amount of well lid to be equipped with the trouble of a large amount of key.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model well lid.
Detailed description of the invention
Below just accompanying drawing in conjunction with the embodiments, is described in further detail detailed description of the invention of the present utility model, is easier to understand, grasp to make technical solutions of the utility model.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Present embodiments provide a kind of anti-stealing manhole cover, adopt vacuum to unblank.Specifically, as shown in Figure 1, well lid comprises pedestal 100 and cover plate 200, in described cover plate 200, there is cylindrical chamber 210, the first end of described cavity 210 has opening up extract opening 220, second end of described cavity 210 has downward opening fore shaft 230, second end of described cavity 210 is provided with lock body 250, described lock body 250 comprises the piston body 251 hooking body 252 and be positioned at cavity 210, described hook body 252 hooks on described pedestal 100 through fore shaft 230, retainer spring 240 is provided with in described cavity 210, first end and the piston body 251 of described retainer spring 240 lean, second end of described retainer spring 240 is fixed on cover plate 200.
During use, the lower surface hooking body 252 is inclined plane, and during lid cover plate 200, when hook body 252 encounters pedestal 100, piston body 251 moves in cavity 210, and spring 240 shrinks, and after cover plate 200 lid puts in place, spring 240 return, hook body 252 hooks and realizes locking on pedestal 100.When cover plate 200 opened by needs, the exhaust tube of vacuum pump is connected to extract opening 220, the gas in cavity 210 taken out by use vacuum pump, and piston body 251 moves gradually in cavity 210, realizes unblanking.
Further, the mouth wall of extract opening 220 is helicitic texture, when normal use well lid, blocking extract opening 220 with screw prevents mud from entering in cavity 210, when needs are unblanked, one end of exhaust tube also has the helicitic texture coordinated with extract opening 220, is convenient to exhaust tube and extract opening 220 is sealedly and fixedly connected.
Should be understood that; the foregoing is only preferred embodiment of the present utility model; be not sufficient to limit the technical solution of the utility model; for those of ordinary skills; within spirit of the present utility model and principle; can be increased and decreased according to the above description, replaced, converted or improved, and all these increases and decreases, replacement, conversion or the technical scheme after improving, all should belong to the protection domain of the utility model claims.
Claims (2)
1. an anti-stealing manhole cover, comprise pedestal and cover plate, it is characterized in that, in described cover plate, there is cylindrical chamber, the first end of described cavity has opening up extract opening, second end of described cavity has downward opening fore shaft, second end of described cavity is provided with lock body, described lock body comprises the piston body hooking body and be positioned at cavity, described hook body hooks on described pedestal through fore shaft, be provided with retainer spring in described cavity, first end and the piston body of described retainer spring lean, and the second end of described retainer spring is fixing on the cover board.
2. anti-stealing manhole cover according to claim 1, is characterized in that, the mouth wall of described extract opening is helicitic texture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275629.7U CN204690794U (en) | 2015-04-29 | 2015-04-29 | A kind of anti-stealing manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275629.7U CN204690794U (en) | 2015-04-29 | 2015-04-29 | A kind of anti-stealing manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204690794U true CN204690794U (en) | 2015-10-07 |
Family
ID=54231103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520275629.7U Expired - Fee Related CN204690794U (en) | 2015-04-29 | 2015-04-29 | A kind of anti-stealing manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204690794U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941592A (en) * | 2019-03-26 | 2019-06-28 | 中山市华宝勒生活用品实业有限公司 | A kind of antitheft air extraction hood |
-
2015
- 2015-04-29 CN CN201520275629.7U patent/CN204690794U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109941592A (en) * | 2019-03-26 | 2019-06-28 | 中山市华宝勒生活用品实业有限公司 | A kind of antitheft air extraction hood |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160429 |