CN202124248U - Manhole cover - Google Patents
Manhole cover Download PDFInfo
- Publication number
- CN202124248U CN202124248U CN2011201685332U CN201120168533U CN202124248U CN 202124248 U CN202124248 U CN 202124248U CN 2011201685332 U CN2011201685332 U CN 2011201685332U CN 201120168533 U CN201120168533 U CN 201120168533U CN 202124248 U CN202124248 U CN 202124248U
- Authority
- CN
- China
- Prior art keywords
- cover
- manhole cover
- manhole
- seal groove
- utility
- 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 - Lifetime
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses a manhole cover, which comprises an upper cover and a lower cover matched with the upper cover. A flanging extending downwards is formed at the edge position of the upper cover; a seal groove with a downward opening is formed at the edge position of the lower cover by means of punching; and the outer wall of the seal groove is fastened with the flanging. The manhole cover is in a double-layer cover structure, so that the strength of the manhole cover is higher than that of a single-layer manhole cover in the prior art. In addition, the seal groove is formed by a punching structure, so that subsequent machining process can be omitted, the lower cover is formed integrally, and machining time and production cost are saved.
Description
Technical field
The utility model relates to sealing element, particularly a kind of manhole cover that is used to seal manhole structure on bulk bin or the tank car.
Background technology
Bulk bin and tank container are similar, but do not belong to collection dress series, but constitute special-purpose series separately, and its collection dress ability surpasses tank container sometimes.This collection dress mode has cement bulk jar and oil, two representative types of fuel oil drum to represent system.
On bulk bin, being provided with manhole is convenient to the people and gets in the jar and clear up.On manhole, be provided with manhole cover, be used at charging rear enclosed manhole.
And existing manhole cover is a single layer structure, so intensity is lower, and service life is shorter, has potential safety hazard easily.And,, on manhole cover, be provided with seal ring with the cooresponding position of people's bore edges for manhole cover is carried out effective seal.
Two kinds of methods of available technology adopting are provided with seal ring, and the one, with glue seal ring is bonded on the manhole cover.This method causes seal ring in use to be shifted easily or comes off, and influences sealing effectiveness then.
Another kind method is through being machined into seal groove to be set on the manhole cover, then seal ring is fastened in the sealing ring recess.This method causes the later stage to process once more, further influences the intensity of manhole cover, has increased production time and cost simultaneously.
The utility model content
The technical matters that the utility model will solve is low in order to overcome manhole cover structural strength of the prior art, and sealing member comes off easily, and the defective that productive costs is higher provides a kind of intensity high, good sealing effect, and fitting process manhole cover easily.
The utility model solves above-mentioned technical matters through following technical proposals:
A kind of manhole cover, its characteristics are that it comprises: a loam cake and one and the adaptive lower cover of this loam cake; The edge of this loam cake is formed with to the flange that extends below; The seal groove that is formed with one Open Side Down in edge's punching press of this lower cover; The outer wall of said seal groove engages with said flange.
Wherein, this manhole cover also comprises a seal ring, and the sealing circle is arranged in the sealing groove.
Wherein, this flange and seal groove are annular.
Wherein, this loam cake is punch forming.
In the utility model, but above-mentioned optimum condition combination in any on the basis that meets this area general knowledge promptly gets each preferred embodiment of the utility model.
The positive progressive effect of the utility model is: the manhole cover of the utility model is the Double layer lid structure, so intensity is higher than single-layer type manhole cover of the prior art.In addition, adopt punching structure to form seal groove and can save follow-up machining processes, make lower cover one-body molded, thereby saved overhours and productive costs.
Description of drawings
Fig. 1 is the structural representation of the utility model one preferred embodiment.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to specify the technical scheme of the utility model.
As shown in Figure 1, the manhole cover of the utility model has comprised a loam cake 1, the punching press of the edge of loam cake 1 be formed with one the annular to the flange that extends below 11.This manhole cover also comprises a lower cover 2, the seal groove 21 that the edge punching press of this lower cover 2 is formed with Open Side Down, and the outer wall of sealing groove 21 engages with the edge of flange 11, thereby loam cake 1 and lower cover 2 are assembled up.
Though more than described the specific embodiment of the utility model, it will be understood by those of skill in the art that these only are casehistorys, the protection domain of the utility model is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite of principle that does not deviate from the utility model and essence, but these changes and modification all fall into the protection domain of the utility model.
Claims (3)
1. manhole cover is characterized in that it comprises: a loam cake and one and the adaptive lower cover of this loam cake; The edge of this loam cake is formed with to the flange that extends below; The seal groove that is formed with one Open Side Down in edge's punching press of this lower cover; The outer wall of said seal groove engages with said flange.
2. manhole cover as claimed in claim 1 is characterized in that this manhole cover also comprises a seal ring, and the sealing circle is arranged in the sealing groove.
3. according to claim 1 or claim 2 manhole cover is characterized in that this flange and seal groove are annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201685332U CN202124248U (en) | 2011-05-24 | 2011-05-24 | Manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201685332U CN202124248U (en) | 2011-05-24 | 2011-05-24 | Manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202124248U true CN202124248U (en) | 2012-01-25 |
Family
ID=45487317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201685332U Expired - Lifetime CN202124248U (en) | 2011-05-24 | 2011-05-24 | Manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202124248U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795430A (en) * | 2011-05-23 | 2012-11-28 | 福托伟阀门(上海)有限公司 | Manhole cover and assembly method thereof |
-
2011
- 2011-05-24 CN CN2011201685332U patent/CN202124248U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102795430A (en) * | 2011-05-23 | 2012-11-28 | 福托伟阀门(上海)有限公司 | Manhole cover and assembly method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120125 |
|
| CX01 | Expiry of patent term |