CN203034488U - Manhole cover - Google Patents
Manhole cover Download PDFInfo
- Publication number
- CN203034488U CN203034488U CN 201220735172 CN201220735172U CN203034488U CN 203034488 U CN203034488 U CN 203034488U CN 201220735172 CN201220735172 CN 201220735172 CN 201220735172 U CN201220735172 U CN 201220735172U CN 203034488 U CN203034488 U CN 203034488U
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- well lid
- manhole cover
- utility
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Abstract
The utility model relates to a manhole cover which is in a plate shape and made from reactive powder concrete. Ribs are arranged at the bottom of the manhole cover in order to reduce the weight. Through holes are also provided in order to facilitate opening. Strength of the manhole cover is guaranteed, raw materials are saved evidently, and the manhole cover structurally features light weight and thinness. In addition, the manhole cover is highly durable, is larger than P16 in impermeability, well impermeable, and capable of effectively stopping invasion of harmful media. 600 fast frost-thaw resistance tests show that the manhole cover for test made from the reactive powder concrete is free of dynamic modulus of elasticity and free of quality loss. Therefore, labor in maintaining and replacing the manhole cover is reduced, maintenance cost is lowered, and the manhole cover has the advantages of no worth for stealing and selling, stable quality, easiness in construction and effectively lowered cost in transportation and installation.
Description
Technical field
The utility model is about a kind of well lid, especially a kind of well lid of being made by RPC.
Background technology
Generally have facility well lids such as the communication buried underground for maintenance under being, heat distribution pipeline, draining at urban road, residential quarter sidewalk, according to its with occasion and the load that bears unusual be divided into light, in, weigh three types, light-duty well lid is applied in residential quarter and park, the greenery patches usually, bears People's Bank of China and bicycle load; Medium-sized well lid is applied on the little road in city, bears the general vehicle load; Heavy well lid is applied on the city thoroughfare, can bear large-scale load-carrying vehicle load.Purposes difference according to each facility, the management of city manhole cover is under the jurisdiction of a plurality of departments, as municipal administration, plumbing, gardens, illumination, heating power, electric power, tap water, public security, environmental protection, telecommunications etc., all have dedicated line and corresponding well lid ownership and the administrative power of oneself.
Present common well lid adopts different materials to make according to the occasion difference of its application, as be broadly divided into three kinds of casting iron well lid, composite drain cover and ordinary reinforced concrete well lids, overwhelming majority well lid is the circle of different-diameter, and individual other has rectangle, is solid construction.
Wherein, casting iron well lid has the intensity height, from the advantage of heavy and light, the problem of existence, and the one, consume a large amount of cast irons (namely consuming iron ore), the latter belongs to the national strategy resource, is applied in municipal well lid occasion, is the waste on a kind of resource is used; Another problem is because phenomenon of rupture appears in the fragility of its material easily; Topmost defective is to be stolen and sold, and it is outstanding especially that this situation seems in the outlying district.
And the defective that composite drain cover has been avoided casting iron well lid embrittlement and has been stolen and sold, but the problem that exists is that its application life is not long, is frequently bearing the dynamic load impact and is being exposed to extraneous natural conditions, easily the generating material ageing failure influences application life.
Advantage cheap, that do not wear out and be difficult for being stolen and sold that the ordinary reinforced concrete well lid has, but the subject matter that exists is strength deficiency, very easily ftractures under the carrying situation repeatedly under load action or repeatedly, causes a large amount of maintain and replace workloads.
Though city manhole cover is a widget in the municipal engineering, but its applied range, use amount is big, as long as the place of road is arranged all can use, and well lid in case destroy loses, and the consequence that causes is often very serious, and little then causing had inconvenient traffic, the vehicle damage that greatly then causes casualties has a strong impact on city image simultaneously.Therefore in city management work, well lid is a link that enjoys attention.
Because the above-mentioned defective that known technology exists, the design people is according to the experience of the practice of being engaged in RPC and well lid for many years and research and development, developed and of the present utility modelly made by RPC, and be specially adapted to the well lid that urban road uses.
The utility model content
The purpose of this utility model provides a kind of well lid, especially a kind of well lid of being made by the RPC material.
For this reason, the utility model proposes a kind of well lid, this well lid is tabular, is made by RPC.
Aforesaid well lid, wherein, the extension downwards of the bottom edge of described well lid is provided with a ring boss.
Aforesaid well lid wherein, is provided with at least one fin in the boss of described well lid bottom surface.
Aforesaid well lid wherein, has many fins arranged in a crossed manner in length and breadth in the boss of described well lid bottom surface.
Aforesaid well lid, wherein, described well lid is provided with a plurality of through holes.
Aforesaid well lid, wherein, described through hole is circular hole, slotted eye or slotted hole.
Aforesaid well lid, wherein, the upper surface of described well lid is provided with anti-skid design.
Well lid of the present utility model all adopts the RPC material to manufacture, can be according to using needs that steel bar stress suitably is set in the member; The utility model has overcome the problem that known casting iron well lid, composite drain cover and ordinary reinforced concrete well lid exist, and have the advantage of above-mentioned various materials, have superhigh intensity (resistance to compression 130MPa), high-durability (freeze proof ≯ F500) and high tenacity (anti-folding 18MPa).
Well lid of the present utility model has inorganic material character, anti-aging, has high-durability, its impermeability is greater than P16, impervious good, can stop the intrusion of hazardous medium effectively, through 600 quick freeze thawing resistances tests, dynamic modulus of elasticity free of losses, the quality free of losses of the well lid test specimen of being made by RPC.Therefore, reduce maintenance, replacing workload to well lid, reduced maintenance cost.
Require to reach 75 ± 5 ℃ stream curing in the utility model well lid manufacturing process, the concrete component factory that this curing condition is general can realize that all therefore, the well lid that the utility model proposes is easy to processing.And the well lid that the utility model is made by RPC also have do not have steal and sell value, steady quality, be easy to construct, the advantage of in light weight, effective reduction transportation installation cost.
Description of drawings
The following drawings only is intended to the utility model done and schematically illustrates and explain, does not limit scope of the present utility model.Wherein,
Fig. 1 is the top surface structure schematic diagram of the utility model well lid;
Fig. 2 is the cross-sectional schematic of an embodiment of the utility model well lid;
Fig. 3 is the elevational schematic view of an embodiment of the utility model well lid.
The drawing reference numeral explanation:
1, well lid 2, through hole 3, boss 4, fin
5, concave part
The specific embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast the description of drawings specific embodiment of the present utility model.Wherein, identical parts adopt identical label.
As shown in Figure 1, the well lid 1 that the utility model proposes is tabular, RPC (RPC) by superhigh intensity is made, its thickness is smaller or equal to 100mm under the general mode of occupation, more than or equal to 30mm, therefore well lid of the present utility model is easy to processing, and also have do not have steal and sell value, steady quality, be easy to construct, the advantage of in light weight, effective reduction transportation installation cost, be specially adapted to municipal engineering as the substitute of casting iron well lid, composite drain cover and ordinary concrete well lid.
Further, can under the prerequisite that guarantees instructions for use, can reduce thickness and the deadweight of member significantly by hole and groove are set at well lid.
As shown in Figure 1, in a specific embodiment, can be provided with a plurality of through holes 2 by well lid 1 along the short transverse of described well lid 1, this through hole 2 can be circular hole, slotted eye or slotted hole.And through hole 2 is distributed in the surface of described well lid.
In another feasible technical scheme.The bottom edge of well lid 1 extends to form a ring boss 3 downwards, and the middle part then constitutes concave part 5.Adopt this structure not only can reduce the deadweight of well lid, but also can cut down finished cost, guarantee the installation accuracy of well lid.
In addition, in the bottom surface boss 3 of described well lid 1, namely can be provided with at least one fin 4 in the concave part 5, as Fig. 2, shown in Figure 3, this fin 4 can arrange many, and it is arranged in a crossed manner in length and breadth to be preferably many fins 4, thereby help to increase the intensity of well lid, improve its application life.
Further, the upper surface of described well lid 1 can also arrange anti-skid design, when being used on the road such as sidewalk when this well lid, can improve safety in utilization effectively.
Well lid 1 of the present utility model has superhigh intensity and toughness (resistance to compression 130MPa, anti-folding 18MPa), has reduced member thickness and deadweight greatly, and compare weight saving with the ordinary reinforced concrete well lid of known features nearly 60%, and structure is more frivolous.
During use, well lid of the present utility model is laid immediately on the well lid support, its operating principle is: perpendicular, transverse load that well lid will bear are passed to support, and support passes to ground with level and vertical load.
The well lid 1 that the utility model is made by RPC can reduce manufacturing cost by boss 3 is set in its bottom when guaranteeing installation accuracy, also alleviated the weight of well lid simultaneously.For guaranteeing the intensity of well lid, be provided with fin in its bottom surface.In addition, the through hole 2 that connects the well lid thickness direction can not reduce the weight of well lid, also helps the unlatching of well lid simultaneously, and therefore structure of the present utility model can significantly save material when guaranteeing well lid intensity, has light and handy slim design feature.
The above only is the schematic specific embodiment of the utility model, is not in order to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.And need to prove, each ingredient of the present utility model is not limited in above-mentioned overall applicability, each technical characterictic of describing in the manual of the present utility model can select one to adopt or select the multinomial use that combines separately according to actual needs, therefore, the utility model has been contained other combination relevant with this case inventive point and concrete the application in the nature of things.
Claims (7)
1. well lid, it is characterized in that: described well lid is tabular, is made by RPC.
2. well lid as claimed in claim 1 is characterized in that, the extension downwards of the bottom edge of described well lid is provided with a ring boss.
3. well lid as claimed in claim 2 is characterized in that, is provided with at least one fin in the boss of described well lid bottom surface.
4. well lid as claimed in claim 3 is characterized in that, has many fins arranged in a crossed manner in length and breadth in the boss of described well lid bottom surface.
5. well lid as claimed in claim 1 is characterized in that, described well lid is provided with a plurality of through holes.
6. well lid as claimed in claim 5 is characterized in that, described through hole is circular hole, slotted eye or slotted hole.
7. as each described well lid of claim 1 to 5, it is characterized in that the upper surface of described well lid is provided with anti-skid design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735172 CN203034488U (en) | 2012-12-27 | 2012-12-27 | Manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220735172 CN203034488U (en) | 2012-12-27 | 2012-12-27 | Manhole cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203034488U true CN203034488U (en) | 2013-07-03 |
Family
ID=48686623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220735172 Expired - Lifetime CN203034488U (en) | 2012-12-27 | 2012-12-27 | Manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203034488U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337442A (en) * | 2016-10-26 | 2017-01-18 | 福建诚兴新材料科技有限公司 | Reactive powder concrete material manhole cover and manufacturing method thereof |
| CN110629798A (en) * | 2019-09-27 | 2019-12-31 | 河南城建学院 | Underground works construction is with from closed well lid based on thermal evaporation principle |
-
2012
- 2012-12-27 CN CN 201220735172 patent/CN203034488U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106337442A (en) * | 2016-10-26 | 2017-01-18 | 福建诚兴新材料科技有限公司 | Reactive powder concrete material manhole cover and manufacturing method thereof |
| CN106337442B (en) * | 2016-10-26 | 2019-04-02 | 福建诚兴新材料科技有限公司 | A kind of Reactive Powder Concrete material inspection well lid and preparation method thereof |
| CN110629798A (en) * | 2019-09-27 | 2019-12-31 | 河南城建学院 | Underground works construction is with from closed well lid based on thermal evaporation principle |
| CN110629798B (en) * | 2019-09-27 | 2021-04-23 | 河南城建学院 | Underground works construction is with from closed well lid based on thermal evaporation principle |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |