KR102556480B1 - Fall prevention device for manhole - Google Patents

Abstract

The present invention relates to a manhole. Specifically, according to the present invention, in a manhole main body, chemical anchor nuts are installed at equal intervals on the lower part inner periphery spaced apart from a manhole frame so as not to interfere with the manhole frame. In addition, after a fall prevention grating is inserted, an anchor bolt is fastened to the chemical anchor nut so that the fall prevention grating is firmly and tightly fixed to the manhole main body. Therefore, damage to a connection part due to shaking, and so on is prevented. A fall preventing apparatus for the manhole of the present invention comprises: a manhole main body; a manhole bracket; a manhole cover; the fall prevention grating; and an odor blocking film.

Description

Fall prevention device for manhole {FALL PREVENTION DEVICE FOR MANHOLE}

The present invention relates to a manhole, and more particularly, chemical anchor nuts are installed at regular intervals on the lower inner periphery spaced apart from the manhole frame so as not to interfere with the manhole frame in the manhole body, a fall prevention grating is inserted, and then the chemical anchor nut is It relates to a fall prevention device for a manhole that prevents damage to a connection part due to shaking by fastening an anchor bolt so that the fall prevention grating is firmly and closely fixed to the manhole body.

In general, when the manhole is not in use, the manhole cover is seated on the manhole support to block the manhole to prevent vehicles or people from falling out. However, when an external shock or high water pressure occurs in the manhole, the manhole cover is forcibly opened and safety accidents in which a pedestrian falls out often occur.

Recently, a safety accident occurred in which a manhole cover on the road was blown off by water pressure due to torrential rain and a pedestrian fell into the manhole and died.

In order to prevent the manhole cover from being opened due to this problem, a lot of manholes with locking devices installed on the manhole cover have been developed and used.

However, due to the nature of the manhole in which the locking device is installed, the locking device is corroded due to long-term non-use, and thus the operation of the locking device is not smooth, and it often occurs when the locking device is damaged by repeated impact. In this case, there is a problem in that the manhole cover is eventually opened and a safety accident occurs in which a pedestrian or a vehicle falls into the manhole.

A manhole that solves this problem has been published as Korean Patent Publication No. 10-2004-0025553. Looking at its structure, a manhole cover is combined on the upper part of the manhole frame, and a manhole safety net in the form of a radial frame at regular intervals is seated at the lower part of the manhole frame. made up of a structure

In addition, Korean Patent Registration No. 10-0750497 relates to a fall prevention structure of a manhole, and a collapsible safety net that can be artificially opened and closed while preventing a fall of a pedestrian or vehicle is installed in the inner hole of the manhole frame. A "┗┑" type consisting of an opening part, a horizontal guide part and a locking part, or a "┗-" type fitting groove consisting of an opening part and a horizontal guide part is formed on both sides of the opposite wall of the lower part of the lid seating jaw, and a folding safety net is formed. It is made by forming locking protrusions inserted into the "┗┑" type fitting grooves formed in the manhole frame at both ends of both sides.

In addition, Korean Utility Model Registration No. 20-0336571 relates to a safety device for a manhole, in a manhole in which a cover is installed to be able to be opened and closed on the upper part of a manhole body forming a hole in the center, on the inner periphery of the hole in the body A stepped portion is formed, and the screen safety net is seated so as to be supported on the stepped portion, and the screen safety net can be opened and closed by pivoting upward by hinge-connecting a coupling portion formed on one side of the safety net and a bracket formed on the stepped portion.

In addition, Korean Utility Model Registration No. 20-0292771 relates to a manhole with a fall-off prevention function, and is composed of a manhole frame having a manhole passage inside and a manhole cover covered and installed on the inner upper part of the manhole frame. And, a safety net is detachably coupled and installed on the inner lower part of the manhole frame.

However, in this safety manhole, a safety net forms a hole in the manhole frame and bolts are fastened to the hole, and shaking occurs due to an error during manufacturing, which causes damage to the connection part and inflow of rainwater. In order to do this, a plurality of rain holes are formed in the manhole cover, but there is a problem in that odor flows backward through the rain holes.

Publication No. 10-2004-0025553 (2004.03.24.) Registered Patent Publication No. 10-0750497 (2007.08.11.) Registered Utility Model Publication No. 20-0336571 (2003.12.09.) Registered Utility Model Publication No. 20-0292771 (2002.10.08)

The present invention is to solve the above problems, chemical anchor nuts are installed at equal intervals on the lower inner periphery spaced apart from the manhole frame so as not to interfere with the manhole frame in the manhole body, a fall prevention grating is inserted, and then the chemical anchor The purpose is to provide a fall prevention device for manholes that prevents damage to the connection part due to shaking by fastening the anchor bolt to the nut so that the fall prevention grating is firmly and closely fixed to the manhole body.

In addition, the present invention installs a junction plate in the center of the upper surface of the fall prevention grating, forms a drain hole at the same location on the junction plate, and attaches two or more overlapping synthetic resin odor blocking films to prevent rainwater from falling and odor to be removed. Another object is to provide a fall prevention device for manholes to prevent reverse flow.

The features of the present invention for achieving the above object are,

A manhole body formed in a box shape, having an entrance at the top, having an equal interval on the same line on the inner circumference of the lower part of the entrance, and into which a chemical anchor nut is drawn in and installed; A manhole bracket seated and coupled to the entrance of the manhole body; A manhole cover seated on the manhole bracket and having a first drainage hole; And it is formed in a circular ring shape to be inserted into the entrance of the manhole body, and a bearing bar is installed in a cross or lattice shape inside to prevent falling, and a through hole is formed at the same position as the chemical anchor nut on the outer surface to form an anchor bolt It is characterized in that it is made of a fall prevention grating fixed to the chemical anchor nut by.

Here, an attachment plate to which a tape is attached through a bolt hole or a belt is installed in the center of the upper surface of the fall prevention grating.

In addition, the fall prevention device for the manhole is formed in the form of a disc made of synthetic resin material, and forms a plurality of second drainage holes in the form of a multi-stage ring based on the center, and overlaps two or more sheets with each other, and the second Drainage holes are arranged in a staggered manner, and a second bolt hole corresponding to the first bolt hole is formed in the central portion or a Velcro tape is attached to the central portion of the bottom surface to prevent rainwater flowing through the first drain hole of the manhole cover. It is discharged through the second drainage hole, and an odor blocking film is fixed to the attachment plate and positioned on the upper surface of the fall prevention grating to prevent the odor from flowing backward.

Here again, the second drain hole is formed in a shape where the outer diameter is larger than the inner diameter so that drainage is easily performed according to the deflection of the odor blocking film due to its own weight.

According to the fall prevention device for a manhole of the present invention configured as described above, chemical anchor nuts are installed at regular intervals on the lower inner periphery spaced apart from the manhole frame so as not to interfere with the manhole frame in the manhole body, and a fall prevention grating is inserted, and then By fastening the anchor bolt to the chemical anchor nut so that the fall prevention grating is tightly and closely fixed to the manhole body, it is possible to prevent damage to the connection part due to shaking or the like in advance.

In addition, according to the present invention, by installing a junction plate in the center of the upper surface of the fall prevention grating, forming a drain hole at the same location on the junction plate, and attaching two or more overlapping synthetic resin odor barriers, rainwater falls and odor can prevent backflow.

1 is a perspective view showing the configuration of a fall prevention device for a manhole according to the present invention.
Figure 2 is an exploded perspective view of Figure 1;
3 is a partial cross-sectional view AA of FIG. 1 .
Figure 4 is a perspective view showing the configuration of the odor prevention film in the fall prevention device for manholes according to the present invention.
5 is an exploded perspective view of FIG. 4 .

Hereinafter, the configuration of the fall prevention device for manholes according to the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of a user or operator. Therefore, the definition should be made based on the contents throughout this specification.

1 is a perspective view showing the configuration of a fall prevention device for a manhole according to the present invention, Figure 2 is an exploded perspective view of FIG. 1, Figure 3 is a partial cross-sectional view A-A of FIG. 1, Figure 4 is a manhole fall according to the present invention It is a perspective view showing the configuration of an odor prevention film among the prevention devices, and FIG. 5 is an exploded perspective view of FIG. 4 .

1 to 5, the manhole fall prevention device 1 according to the present invention includes a manhole body 10, a manhole bracket 20, a manhole cover 30, a fall prevention grating 40, and an odor It consists of a blocking film (50).

First, the manhole body 10 is formed in a box shape in a conventional structure, and the entrance 11 is formed at the top.

As shown in FIG. 3, the manhole body 10 has equal intervals on the same line at the lower inner periphery of the entrance 11, and chemical anchor nuts N are inserted and installed. The chemical anchor nut (N) is installed during the manufacturing process of the manhole body 10, drills the corresponding area, injects an adhesive, and then inserts and fixes the chemical anchor nut (N).

And, the manhole bracket 20 is seated and coupled to the entrance 11 of the manhole body 10 in a conventional structure.

In addition, the manhole cover 30 is seated on the manhole bracket 20, and a plurality of first drainage holes H1 are formed.

In addition, the fall prevention grating 40 is made of metal or synthetic resin and is formed in a circular ring shape to be inserted into the entrance 11 of the manhole body 10, and has a cross or lattice bearing bar 41 inside to prevent a fall. is installed, and a through hole 43 is formed on the outer surface at the same position as the chemical anchor nut N, and is fixed to the chemical anchor nut N by the anchor bolt B.

The fall prevention grating 40 has an attachment plate 45 to which the tape T is attached with a first bolt hole (not shown) or a belt in the center of the upper surface. In one embodiment of the present invention, the Velcro tape T is installed. shown

Subsequently, the odor blocking film 50 is formed in a disk shape made of a synthetic resin material such as tarpaulin, and a plurality of second drainage holes H2 are formed in a multi-stage ring shape based on the center, and two or more sheets are overlapped with each other, The second drain holes H2 are arranged in a staggered manner, and a second bolt hole (not shown) corresponding to the first bolt hole is formed in the center or a Velcro tape T is attached to the center of the bottom to cover the manhole cover ( Rainwater flowing through the first drain hole H1 of 30) is discharged through the second drain hole H2, and is fixed to the attachment plate 45 to prevent the odor from flowing back to the upper surface of the fall prevention grating 30. place

As shown in FIGS. 4 and 5, the second drainage hole H2 is formed in a shape in which the outer diameter is larger than the inner diameter so that drainage is easily performed according to the sagging of the odor blocking film 50 due to its own weight. it is desirable

It is preferable that only the rims of the odor barrier film 50 are mutually coupled by a rod material to form a space between the layers stacked inside. Since the second drain hole H2 is arranged because the drain hole H2 is arranged in a zigzag shape, a reverse flow of odor is prevented.

Hereinafter, the installation process and operation of the fall prevention device for manholes according to the present invention will be described in detail with reference to the accompanying drawings.

First, when the manhole body 10 is manufactured in a factory, chemical anchor nuts N are installed at equal intervals along the same line on the lower inner periphery of the entrance 11.

After installing the manhole body 10 in which the chemical anchor nut (N) is already installed in the ground, the fall prevention grating 40 is fixed to the chemical anchor nut (N) using the anchor bolt (B).

When the installation of the fall prevention grating 30 is completed, the manhole bracket 20 is installed in the entrance 11 of the manhole body 10.

When the installation of the manhole bracket 20 is completed, the odor blocking film 50 is attached to and fixed to the attachment plate 45 of the fall prevention grating 40.

Finally, cover the manhole cover 30 to complete the installation.

In this state, even if rainwater flows backward and the manhole cover 30 is lost due to water pressure, the fall prevention grating 40 is fixed to the entrance 11 to prevent pedestrians or vehicle wheels from falling into the entrance 11. do.

In addition, since the second drain hole H2 of the odor prevention film 50 is located in a zigzag shape, the inside is not completely dried while water is drained, and the upper and lower films maintain close contact with each other due to the surface tension of the water. Since back flow is blocked and the diameter of the second drain hole H2 increases toward the outside, the rainwater falling through the first drain hole H1 of the manhole cover 30 flows outward by the gradient and the diameter gradually increases. It is guided to the widened second drain hole (H2) so that it is smoothly discharged.

The present invention can be variously modified and can take various forms, and in the detailed description of the invention, only specific embodiments thereof have been described. However, it should be understood that the present invention is not limited to the particular forms mentioned in the detailed description, but rather it is understood to include all modifications, equivalents and substitutes within the spirit and scope of the present invention as defined by the appended claims. It should be.

10: manhole body 20: manhole bracket
30: manhole cover 40: fall prevention grating
41: bearing bar 43: through hole
45: attachment plate 50: odor barrier
B: Anchor bolts H1, H2: 1st and 2nd drainage holes
N : Chemical Anchor Nut T : Velcro Tape

Claims (4)

A manhole body formed in a box shape, having an entrance at the top, having an equal interval on the same line on the inner circumference of the lower part of the entrance, and into which a chemical anchor nut is drawn in and installed;
A manhole bracket seated and coupled to the entrance of the manhole body;
a manhole cover seated on the manhole bracket and having a first drainage hole;
It is formed in a circular ring shape to be inserted into the entrance of the manhole body, and a bearing bar is installed in a cross or lattice shape inside to prevent falling, and a through hole is formed at the same position as the chemical anchor nut on the outer surface to anchor the bolt a fall-prevention grating fixed to the chemical anchor nut by means of an attachment plate to which a tape is bonded with a bolt hole or a belt to the central portion of the upper surface; and
It is formed in the form of a disc made of a synthetic resin material such as tarpaulin, and a plurality of second drain holes are formed in a multi-stage ring shape based on the center, and two or more layers are overlapped, but the second drain holes are staggered. In order to form a space between the laminated inside, only the edges are mutually coupled by rods, and when the water is drained, the inside is not completely dried, and the upper and lower films are kept in close contact with each other by the surface tension of the water, and in the center A second bolt hole corresponding to the first bolt hole is formed or a Velcro tape is attached to the center of the bottom surface to discharge rainwater flowing through the first drain hole of the manhole cover to the second drain hole and prevent odors from flowing back. and an odor blocking film fixed to the attachment plate to prevent the fall and positioned on the upper surface of the anti-fall grating;
The second drain hole,
A fall prevention device for a manhole, characterized in that the outer diameter is larger than the inner diameter so that drainage is easily performed according to the sagging of the odor blocking film by its own weight. delete delete delete

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