WO2021251706A1

WO2021251706A1 - Manhole cover including inner cover

Info

Publication number: WO2021251706A1
Application number: PCT/KR2021/007073
Authority: WO
Inventors: 한정욱
Original assignee: 한정욱
Priority date: 2020-06-10
Filing date: 2021-06-07
Publication date: 2021-12-16
Also published as: KR102219411B1

Abstract

The present invention relates to a manhole cover including an inner cover and, more specifically, to a manhole cover including an inner cover, wherein: the inner cover used for a manhole is made from a mixed material including a corrosion-preventing material mixed therein to enable prevention of corrosion; safety information for management and maintenance of the manhole and prevention of a safety accident is marked using a number and a logo on the upper surface of the inner cover, so as to enable the safety information to be promptly recognized, whereby at a moment when the manhole cover is opened, information can be promptly recognized and maintenance can be promptly performed on the basis of the recognized information; and the inner cover is fastened or held in such a structure that the inner cover is suspended by multiple annular rods coupled to the inner circumferential edge of a manhole housing, to prevent falling thereof and enable easy attachment or detachment.

Description

Manhole cover with inner cover

The present invention manufactures an inner lid that is not corroded by general gas, and various safety information for maintenance and safety accident prevention are marked. It's about manhole covers.

The inner cover (inner cover) of the existing manhole cover is located just below the manhole cover when the manhole cover is opened.

In general, KEPCO's electric manholes and KT's telecommunication manholes have been used only for fall prevention and have been limited so that they can be manufactured only with rolled steel sheets.

However, the use position of the inner lid was in the shape of placing the lid on top of the pot. In addition, due to the nature of the location where the manhole cover is used, it was not possible to prevent corrosion of the inner cover made of iron materials due to various methane gas generated from the manhole box and pipeline.

In particular, it can be said that the situation is even more serious in the sewage manhole where hydrogen sulfide gas and various gases are generated. Moreover, due to the absolute shortage of on-site manpower, communication is not well communicated where foreign workers are employed, and asphyxiation and fall accidents often occur in the sewage manhole box, which is becoming a social problem.

[Prior art literature]

[Patent Literature]

(Patent Document 1) Republic of Korea Patent Publication No. 10-1606817 (Registered on March 22, 2016)

The present invention has been devised to solve the above problems, and an object of the present invention is to mark various information on the upper surface of the inner cover in the manhole so that the manhole maintenance and repair can be processed quickly, and the inner cover is manufactured It is manufactured to prevent corrosion during operation, and it can be installed in a form that maintains airtightness in the manhole, preventing human damage in advance through harmful gas in the manhole, and has a structure in which the inner cover is securely fastened to and mounted on the manhole housing. It is to provide a manhole cover equipped with an inner cover that is easy to fasten and also enables fall prevention.

Other objects and advantages of the present invention will be set forth below and will be learned by way of example of the present invention. Further, the objects and advantages of the present invention may be realized by means and combinations indicated in the claims.

The present invention is a means for solving the above problems,

On the inner periphery of the manhole housing 20 provided with the manhole cover 30 to be opened and closed at the top, the manhole cover 30 and the openable and openable inner cover 40 installed horizontally and spaced apart from the manhole cover 30 are provided,

The inner lid 40 is manufactured by coating the outer periphery with an anticorrosive material, or by mixing the anticorrosion material with a steel plate material for manufacturing the inner lid 40 at a preset ratio, inside the manhole 10 or in a pipeline To prevent corrosion caused by toxic gas rising from the top,

Safety information 44 for the management and maintenance of the manhole 10 and the prevention of safety accidents on the upper surface of the inner lid 40 is marked with numbers and logos to enable quick recognition, so that rapid maintenance and human damage do not occur. It is characterized in that it is not.

As described above, in the present invention, safety information for maintenance and safety accident prevention is marked on the upper surface of the inner lid, so that rapid manhole maintenance processing is possible, and human accidents due to harmful gases and falls do not occur. It works.

In addition, the present invention has the effect of reducing the maintenance cost by manufacturing the inner lid of a material that can prevent corrosion, so that the deterioration of the inner lid does not occur due to harmful gas.

In addition, the present invention has an effect that the risk of falling of the operator does not occur by having a structure in which the inner cover corresponds to the concave groove of the inner periphery of the manhole housing and is fastened or fixed.

1 is a view of an embodiment showing an inner lid according to the present invention.

Figure 2 is a view of another embodiment showing the inner lid according to the present invention.

Figure 3 is a view of an embodiment showing the installation state of the inner lid according to the present invention.

4 is a view of an embodiment showing an installation state of the gas monitoring sensor according to the present invention.

10: manhole 20: housing

21: installation jaw 22: concave groove

30: manhole cover 40: inner cover

41: Warning sign 42: Piping information mark

43: Manhole information mark 44: Safety information

51: 1st round bar 52: 2nd round bar

60: gas detection sensor

Before describing various embodiments of the present invention in detail, it will be understood that the application is not limited to the details of the construction and arrangement of components described in the following detailed description or shown in the drawings. The invention is capable of being embodied and practiced in other embodiments and of being carried out in various ways. Also, device or element orientation (eg, “front”, “back”, “up”, “down”, “top”, “bottom”) The expressions and predicates used herein with respect to terms such as ", "left," "right," "lateral," etc. are used merely to simplify the description of the invention, and the associated apparatus Or it will be appreciated that it does not simply indicate or imply that an element must have a particular orientation. Also, terms such as “first” and “second” are used in this application and the appended claims for the purpose of description and are not intended to indicate or imply relative importance or spirit.

In order to achieve the above object, the present invention has the following features.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, and the inventor should properly understand the concept of the term in order to best describe his invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so at the time of the present application, various It should be understood that there may be equivalents and variations.

Hereinafter, a manhole cover with an inner lid according to a preferred embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 .

The manhole cover provided with the inner cover according to the present invention is as follows.

The manhole cover 30 of the present invention is provided with an inner cover 40, and is spaced apart from the manhole cover 30 on the inner periphery of the manhole housing 20 having the manhole cover 30 on the upper portion to be opened and closed. It is provided with an openable and openable inner lid 40 that is horizontally installed.

This inner lid 40 is to prevent corrosion,

The inner lid 40 is manufactured by coating the outer periphery with an anti-corrosion material, or by mixing the anti-corrosion material with a steel plate material for manufacturing the inner lid 40 at a preset ratio. Prevent corrosion due to toxic gas rising from the top.

Corrosion prevention materials for this purpose include any one or a mixture of two or more of calcium vinyl chloride, PE (polyethylene, poly-ethylene), PP (polypropylene, poly-propylene), PC (polycarbonate, polycarbonate), and rubber. material can be used.

Of course, in the above, it has been described that the inner lid 40 is manufactured by mixing the above corrosion-preventing material with the steel plate material, but it is possible to manufacture the inner lid 40 only with a rubber material (ex: MBR rubber material). . According to the user's embodiment, it is natural that the selection of such a material can be changed to various materials if it is possible to prevent corrosion due to harmful gas.

This, the installation form of the inner lid is as follows,

The first installation form in which the inner lid 40 outer periphery is seated and installed on the inner periphery installation jaw 21 of the manhole housing 20, or the first in which both ends horizontally protrude to the outer periphery when the inner lid 40 is manufactured; A plurality of concave grooves 22 formed on the inner periphery of the manhole housing 20 at both ends of the first and

second round bars

51 and 52 by protruding the two

round bars

51 and 52 together by insert injection or extrusion. It can be detachably fastened to or mounted on the manhole housing 20 in any one of the second installation forms that are fixedly installed while correspondingly fastened (or mounted) to some of them.

That is, the first and

second round bars

51 and 52 are formed on both wing portions of the inner lid 40 in preparation for a fall, and are formed by insert injection or extrusion to serve as a pillar (beam).

In addition, the inner lid 40 is marked with numbers and logos on the upper surface of the safety information 44 for the management and maintenance of the manhole 10 and the prevention of safety accidents to enable quick recognition, so that rapid maintenance and loss of life are possible. make sure that does not occur.

More specifically, there has been inconvenience in that the employees of the sewage pipe management office have to carry various file folders when they go to the site for maintenance of the sewage manhole box. In contrast, by displaying various warning boards on the upper part of the inner lid 40, as well as simple information such as information on the inflow and outflow pipe diameters of the sewage pipe and the flow direction of the sewage pipe in the pipe diameter, it is possible to increase work efficiency. In addition, if the management number of the box of the manhole cover 30 and the information of the box of the manhole cover 30 are marked with a barcode or QR code attached to the inner cover 40 of the manhole cover 30, the management office staff can do it more quickly It will be possible to handle the case, and it will be possible to guarantee the safety of the transmitter, which is currently not being implemented due to the corrosion of various gases in the manhole box, so that the business of the network of the sewage pipe central management system will be faster.

For this, the safety information 44 is composed of a warning mark 41 for safety, a pipe information mark 42, and a manhole information mark 43 as follows.

The warning mark 41 is a warning displayed in case of a suffocation risk or a fall risk.

The pipe information display 42 is pipe information in which each pipe diameter (pipe diameter) of the inflow pipe and the outflow pipe inside the manhole 10 and the flow direction of the sewage are displayed.

The manhole information mark 43 is a mark on which the management number and product information of the manhole cover 30 are displayed.

Of course, the safety information 44 is that all three pieces of information may be displayed or selectively displayed depending on the manhole 10 where the inner lid 40 is installed, the installation location, and the surrounding environment.

In addition, as a display method in which the safety information 44 is displayed on the upper surface of the inner lid 40, three methods are presented.

When the inner lid 40 is manufactured by injection or extrusion, a first display form in which the safety information 44 is displayed in an engraved or embossed form, and a second display form in which the safety information 44 is displayed by screen or marking printing , is the third display form in which the safety information 44 is attached and displayed with a special sticker engraved with a barcode. is there

In addition, in order to determine the presence or absence of toxic gas between the manhole cover 30 and the inner lid 40 separation space (A), the inner lid 40 is on the upper surface of the inner lid 40, toxic in the first first color When gas is detected, the gas detection sensor 60, which is changed to a preset second color (ex: red, etc.) different from the first color (ex: white), is installed with a sticker or device, so that the operator can use the manhole cover ( 30) at the moment of opening, look at the color of the gas detection sticker, check whether the gas inside the manhole 10 comes out from the inner cover 40 to the separation space (A), and to prevent safety accidents.

In addition, various electronic devices such as a transmission device for network transmission with the management server, that is, transmission/reception of various information in the manhole, etc. may be installed on the upper surface of the inner lid 40 according to various embodiments of the user. In order to accommodate such an electronic device, the upper surface of the inner lid 40 is made of a rubber material with good adhesion and blocking gas and moisture in preparation for various gases to be generated to guarantee corrosion of the transmitter, but the inner lid ( It is possible to avoid the silicone rubber material with poor adhesion of various safety label stickers to be attached to 40), and make it possible to form a storage space made of MBR rubber material that is strong in oil and can increase hardness.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those of ordinary skill in the art to which the present invention pertains. It goes without saying that various modifications and changes are possible within the scope of equivalents of the claims to be described.

Claims

On the inner periphery of the manhole housing 20 provided with the manhole cover 30 to be opened and closed at the top, the manhole cover 30 and the openable and openable inner cover 40 installed horizontally and spaced apart from the manhole cover 30 are provided,

The inner lid 40 is manufactured by coating the outer periphery with an anti-corrosion material, or by mixing the anti-corrosion material with a steel plate material for manufacturing the inner lid 40 at a preset ratio. To prevent corrosion caused by toxic gas rising from the top,

Safety information 44 for management and maintenance of the manhole 10 and prevention of safety accidents on the upper surface of the inner lid 40 is marked with numbers and logos to enable quick recognition, so rapid maintenance and human damage do not occur. to avoid,

The anticorrosion material is calcium vinyl chloride, PE, PP, PC, any one of rubber materials, or a mixed material of two or more is used,

The safety information 44 is

Warning signs (41) displayed in case of suffocation and fall risk;

The manhole 10, the pipe information display 42, the pipe diameter of the inlet and outlet pipes and the flow direction of the sewage is displayed;

Manhole information display 43 that displays the management number and product information of the manhole cover 30; is made up of

The safety information 44 is

At the time of injection or extrusion production of the inner lid 40,

a first display form in which the safety information 44 is displayed in engraved or embossed form;

a second display form in which the safety information 44 is displayed by screen or marking printing;

a third display form in which the safety information 44 is attached and displayed as a special sticker engraved with a barcode; Either one is indicated and used, or two or more display forms are used together,

The inner lid 40 is

When the inner lid 40 is manufactured, the first and second round rods 51 and 52 whose both ends horizontally protrude toward the outer periphery are formed to protrude together by insert injection or extrusion, so that both ends of the first and second round rods 51 and 52 are , is detachably fastened and mounted to the manhole housing 20 in a second installation form that is fixedly installed while correspondingly fastened or mounted to some of the plurality of concave grooves 22 formed on the inner periphery of the manhole housing 20,

The inner lid 40 is

In order to determine the presence or absence of toxic gas between the manhole cover 30 and the inner cover 40 space (A), on the upper surface of the inner cover 40, when toxic gas is detected in the first first color, a dictionary different from the first color The gas detection sensor 60, which is changed to the set second color, is attached and installed in the form of a sticker or device,

On the upper surface of the inner lid (40)

An electronic device for exchanging manhole information with the management server can be installed, and a storage space made of MBR rubber is formed on the upper surface of the inner cover to prevent corrosion of the electronic device. .