KR20140120097A - Manhole cover structure with plastic body - Google Patents
Manhole cover structure with plastic body Download PDFInfo
- Publication number
- KR20140120097A KR20140120097A KR1020130035760A KR20130035760A KR20140120097A KR 20140120097 A KR20140120097 A KR 20140120097A KR 1020130035760 A KR1020130035760 A KR 1020130035760A KR 20130035760 A KR20130035760 A KR 20130035760A KR 20140120097 A KR20140120097 A KR 20140120097A
- Authority
- KR
- South Korea
- Prior art keywords
- manhole cover
- support
- support piece
- supporting piece
- piece
- Prior art date
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1472—Cover entirely made of synthetic material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
- E02D2200/1607—Shapes round, e.g. circle
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0006—Plastics
- E02D2300/0017—Plastics thermoplastic
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention relates to a manhole cover structure made of a synthetic resin material. Since the support pieces of the inner frame of the manhole cover are arranged so as to evenly divide the circumferential angle of the manhole cover, the load applied to the manhole cover is uniformly dispersed Since the body of the manhole cover is formed of a synthetic resin material, various colors and patterns can easily be formed, which can contribute to the enhancement of the aesthetic appearance of the city, and the manufacturing cost is reduced as compared with the conventional manhole.
Description
The present invention relates to a manhole cover structure made of a synthetic resin material using synthetic resin as a material of a manhole cover for weight reduction and applying an inner frame having a plurality of support pieces stacked for strength reinforcement, load distribution and durability enhancement.
A manhole is a kind of passage that connects the upper and the sewer pipes or various kinds of ducts and other underground facilities to the ground. The manhole is generally composed of a reinforced concrete bath body having an upper iron opening and a manhole cover coupled to the opening.
The material of the manhole cover is mainly made of cast iron and usually manufactured through a casting. However, the material of the manhole cover is not only large in weight but also has a large cross section for securing strength.
In general, the manhole is located on the plane linear shape of the underground facilities, so that the installation position can not be limited according to the ground facilities, and the manhole cover coupled to the opening of the manhole is mass produced through standardization in order to reduce the construction cost and maintenance cost. As a result, it is practically impossible to apply manhole covers of different strength and dimensions to the installation point, so that the maximum load condition is applied at all times.
Therefore, in the case of a mass-produced manhole cover, it is inevitable that the weight of the manhole cover should be increased based on the maximum working load, such as the wheel load on the car.
Such a conventional manhole cover has a serious problem in various aspects such as a risk of safety accident due to heavy self weight during opening and closing.
In addition, since the material of the manhole cover, which is the primary color of the cast iron of dark color, can not only inhibit the beauty of the city, but also has low discrimination during night work, there are many difficulties in ensuring workability and safety.
Korean Patent Laid-Open No. 10-2010-0019291 is known as a conventional technique for a manhole cover.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an internal frame for reinforcing the inside of a lid while achieving economical cost and weight reduction by using a synthetic resin material, To provide a manhole cover structure made of a synthetic resin material.
The above and other objects can be accomplished by the provision of a base plate having a circular plate shape and a plurality of support pieces fixed to the base and each having a horizontal part and a vertical part, A manhole cover formed of a resin material body enclosing the manhole cover, a manhole cover provided with a seating part on which the manhole cover is seated around the circular opening, and a side flange formed on the periphery for burying on the ground, This is achieved by a manhole cover structure made of material.
In order to achieve the above object, the support pieces comprise a first support piece, a second support piece and a third support piece which evenly divide the circumferential angle with respect to the center of the manhole cover, And the second supporting piece and the third supporting piece are sequentially stacked with respect to the base, so that the first supporting piece, the second supporting piece and the third supporting piece are located at different heights of the respective horizontal parts desirable.
In addition, it is preferable that a fastening groove is formed at one circumference of the body portion, and a fastening protrusion inserted and fastened to the fastening groove of the body portion is formed inside the manhole cover.
Further, the manhole cover structure according to the present invention is characterized in that, among the first support piece, the second support piece, and the third support piece, the first support piece is formed at the uppermost portion of the manhole cover, It is preferable that the manhole cover receiving portion is embedded in the ground by determining the embedding direction of the manhole cover receiving portion.
According to the manhole cover structure made of a synthetic resin material according to the present invention, since the support pieces of the inner frame of the manhole cover are arranged to evenly divide the circumferential angle of the manhole cover, the load applied to the manhole cover is uniformly dispersed So that excellent structural strength can be maintained.
Also, the ability to resist the bending load is improved by the spaced structure between the base of the manhole cover and the support pieces, and the rigidity is excellent due to the laminated structure of the support pieces of the inner frame of the manhole cover, It is possible to minimize deformation.
In addition, since the body of the manhole cover is formed of a synthetic resin material, various colors and patterns can be easily formed, thereby contributing to an improvement in the appearance of the city.
The manhole cover structure according to the present invention is advantageous in that the manhole cover is made of a synthetic resin material, so that manufacturing cost is reduced as compared with a conventional metal manhole, and noise generated when the manhole cover is flowed is reduced.
1 is a perspective view showing a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention,
2 is a view showing the internal structure of a manhole cover of a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention,
3 is an exploded perspective view of a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention,
4 is a perspective view illustrating an inner frame forming a manhole cover of a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention,
FIG. 5 is a side view showing support pieces constituting the inner frame of FIG. 4,
FIG. 6 is a cross-sectional view of a manhole cover of a synthetic resin material according to a preferred embodiment of the present invention taken in a direction crossing a first support piece of a manhole cover,
7 is a schematic cross-sectional view illustrating a method of manufacturing a manhole cover of a synthetic resin material manhole cover structure according to a preferred embodiment of the present invention,
FIG. 8 is a cross-sectional view showing the cutaway portion AA 'of FIG. 2,
9 is a plan view showing an example of a pattern of a manhole cover of a synthetic resin material manhole cover structure according to a preferred embodiment of the present invention,
FIG. 10 is a diagram showing a comparison of the placement state of the first support pieces with the running direction of the road in the manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention,
11 is an exploded perspective view of a manhole cover structure made of a synthetic resin material according to another embodiment of the present invention,
12 is a view showing the internal structure of a manhole cover of a manhole cover structure made of a synthetic resin material according to another embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, the construction of a synthetic resin manhole cover structure according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view showing a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention, FIG. 2 is a view illustrating an inner structure of a manhole cover of a synthetic resin material manhole cover structure according to a preferred embodiment of the present invention And FIG. 3 is an exploded perspective view of a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention. FIG. 4 is an exploded perspective view of an inner frame forming a manhole cover of a synthetic resin- FIG. 5 is a side view showing supporting members constituting the inner frame of FIG. 4, FIG. 6 is a perspective view of a first supporting piece of a manhole cover of a synthetic resin material manhole cover according to a preferred embodiment of the present invention, Sectional view showing a cross section cut in the direction of traversal.
As shown in FIGS. 1 to 6, the synthetic resin manhole cover structure according to the present invention includes a
The
The
The
The
The lower ends of the
The
A
A method of manufacturing the
7 is a schematic cross-sectional view showing a mold apparatus for manufacturing a manhole cover of a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention.
7, a
Since the
The
Hereinafter, the operation and effect of the manhole cover structure made of the synthetic resin material according to the preferred embodiment of the present invention will be described.
1. Circumferential equalization of the support piece
2 and 6, a
The
Specifically, the first supporting
2. Separated structure of base and support pieces
2 and 6, in the manhole cover structure of the synthetic resin material according to the present invention, the
The
Since the
3. Laminated structure of support
8 is a cross-sectional view showing an incision taken along the line A-A 'in Fig.
Since the edge of the
4. Separate locking device for light weight
The synthetic resin manhole cover structure according to the present invention has a smaller weight than the
In order to prevent this, a manhole cover structure made of a synthetic resin material according to the present invention is characterized in that, as shown in FIG. 1, a
5. Implementation of various designs
Since the
However, since the synthetic resin manhole cover structure according to the present invention is made of a synthetic resin material outside the
6. Reduction of noise
The
However, since the synthetic resin material of the
As described above, since the
7. Identify the direction of the first support piece
FIG. 10 is a view showing a comparison of arrangement states of first support pieces with running direction of a road in a manhole cover structure made of a synthetic resin material according to a preferred embodiment of the present invention.
10A, the
10A, the
As a result, the load applied to the
If the
In order to prevent this, the
8. Decrease in manufacturing cost
Metal materials are more expensive than synthetic resin materials. Therefore, it is most economical to ensure structural strength while minimizing metal parts. The
FIG. 11 is an exploded perspective view of a manhole cover structure made of a synthetic resin material according to another embodiment of the present invention, and FIG. 12 is a view illustrating an inner structure of a manhole cover of a synthetic resin material manhole cover structure according to another embodiment of the present invention .
11 and 12, the manhole cover structure made of a synthetic resin material according to another embodiment of the present invention is the same as the structure of the preferred embodiment shown in FIGS. 1 to 10 in other respects, .
The
Since the
In the preferred embodiment of the present invention, three
Although the materials of the manhole cover and the manhole cover are described as examples in the above embodiments of the present invention, the present invention is not limited thereto. Various materials suitable for the purpose of the present invention can be manufactured and used in various manners . For example, artificial marble for expressing the beauty of marble as a material of a manhole cover, concrete for the purpose of harmonization with the road in appearance, and composite concrete containing glass fiber for strength reinforcement at the same time, And the like can be used.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And additions should be considered as falling within the scope of the claims of the present invention.
1 manhole cover, 2 side flanges, 4 walls, 7 fastening projections, 10 manhole cover, 12 base, 20 inner frame, 21 first support piece, 22 second support piece, 23 third support piece, 30 body part, 32 fastening groove
Claims (4)
A plurality of support pieces fixed to the base and each having a horizontal portion and a vertical portion, the plurality of support pieces being disposed by dividing the circumferential angle of the base uniformly; And
A manhole cover formed of a resin material body surrounding the base and the support pieces,
And a manhole cover support portion formed with a seating portion on which the manhole cover is seated is formed around a circular opening portion and a side flange is formed around the periphery for burying on the ground.
The first supporting piece, the second supporting piece, and the third supporting piece are sequentially laminated on the base, so that the first supporting piece, the second supporting piece, Wherein the manhole covers are located at different heights.
Wherein the first supporting piece is formed at the uppermost portion of the manhole cover,
Wherein the manhole cover receiving portion is embedded in the ground by determining the embedding direction of the manhole cover receiving portion so that the first supporting piece of the manhole cover is perpendicular to the road direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130035760A KR20140120097A (en) | 2013-04-02 | 2013-04-02 | Manhole cover structure with plastic body |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020130035760A KR20140120097A (en) | 2013-04-02 | 2013-04-02 | Manhole cover structure with plastic body |
Publications (1)
Publication Number | Publication Date |
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KR20140120097A true KR20140120097A (en) | 2014-10-13 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020130035760A KR20140120097A (en) | 2013-04-02 | 2013-04-02 | Manhole cover structure with plastic body |
Country Status (1)
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KR (1) | KR20140120097A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180006690A (en) * | 2016-07-11 | 2018-01-19 | 신영기술개발(주) | Open/close cover structure for tunnel common duct |
CN114134939A (en) * | 2021-12-31 | 2022-03-04 | 威海泽庭新型建材有限公司 | Resin-based high-polymer composite well lid and production process thereof |
-
2013
- 2013-04-02 KR KR1020130035760A patent/KR20140120097A/en not_active Application Discontinuation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180006690A (en) * | 2016-07-11 | 2018-01-19 | 신영기술개발(주) | Open/close cover structure for tunnel common duct |
CN114134939A (en) * | 2021-12-31 | 2022-03-04 | 威海泽庭新型建材有限公司 | Resin-based high-polymer composite well lid and production process thereof |
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