KR102509963B1 - Multifunctional manhole fall prevention safety plate - Google Patents

Abstract

The present invention relates to a safety plate mounted to a manhole (1) for wastewater and sewage. The safety plate mounted to a manhole (1) for wastewater and sewage comprises: a safety ring (10) which is loosely or forcibly inserted into a passage of an upper floating body (1a) forming the manhole (1); a safety dome (20) which convexly protrudes from a lower end of the safety ring (10) toward the center at a predetermined curvature to provide cover separation prevention, human fall prevention, and odor blockage functions; an outlet (30) which has a predetermined size and penetrates the safety dome (20) to be radially arranged so as to drop a substance introduced from the outside; and a detachable member (40) which is fastened to the safety ring (10) and the upper floating body (1a) to fix the safety ring (10) to a location adjacent to the manhole (1) cover. Accordingly, the present invention can prevent injury to a human body from a fall by forming a safety dome, narrowly covering the passage of the manhole, in a hemispherical shape so that the upper surface thereof is formed in a concave curved surface to minimize interference with a falling person, and a lower surface thereof is formed in a convex curved surface to eddy-refract air and rainwater flowing backward to the ground surface to block odors and prevent separation of the cover. The present invention can provide an effect of preventing the cover from being separated due to backward flowing of rainwater even when strong water pressure is applied since fixing strength increases as water pressure becomes greater due to deformation stress outwardly widened by water pressure applied to the lower surface.

Description

Multifunctional manhole fall prevention safety plate}

The present invention relates to a safety plate mounted on a rainwater and sewage manhole to prevent cover separation, prevent human fall, and prevent odor, and more particularly, a safety ring and a safety dome constituting the safety plate are manufactured at a lower cost and cost than metal ones. In addition, by forming a synthetic resin material with light weight and relatively high rigidity, it relates to a multifunctional manhole fall prevention safety plate that is not only easy to transport and install, but also can guarantee a high lifespan with excellent corrosion resistance and chemical resistance.

A manhole is an underground structure that allows people to enter and exit in order to inspect, repair, or clean water and sewage pipes and rainwater pipes buried underground.

This manhole blocks the passage by seating the cover on the pedestal installed near the surface to prevent people or vehicles from falling out.

However, when high water pressure is generated inside due to an external shock or flood caused by a vehicle, the cover is forcibly removed and a pedestrian falls, resulting in a fatal accident through news.

That is, in order to solve this problem, a manhole cover to which a locking device is applied to block the separation of the cover has been proposed.

This locking type cover has a problem in that it is exposed to the outside and quickly corrodes, and is damaged by repeated impacts by a vehicle and loses its locking function.

As another example, as disclosed in patent literature, a support frame and a chain having a locking function have been proposed.

That is, since the proposed support frame and chain are covered by the cover, corrosion and shock can be minimized, and even if the cover is separated, it provides an advantage of preventing a fall accident.

However, since it is made of a metal that is vulnerable to moisture, there is a problem in that it cannot safely support a fallen person due to a long-term decrease in durability due to corrosion.

Moreover, there is a problem in that the life is inevitably shortened because shock is continuously transmitted through the cover as it is mounted on the pedestal supporting the cover.

Republic of Korea Patent Publication No. 10-0725352 Title of Invention: Manhole Cover Separation Prevention Device Republic of Korea Patent Registration No. 10-1184646 Title of Invention: Fall prevention safety net for manhole

The present invention has been proposed to solve the above problems, and the safety ring and safety dome constituting the safety plate are formed of a synthetic resin material having low manufacturing cost, light weight and relatively high rigidity compared to metal, so that transportation and installation are easy. The purpose is to provide a multi-functional manhole fall prevention safety plate that can guarantee a high lifespan with excellent corrosion resistance and chemical resistance.

In addition, according to the present invention, as the water pressure applied from the bottom of the manhole causes the deformation stress to spread outward, the higher the water pressure, the higher the fixing strength, preventing the backflow of rainwater even when strong water pressure is applied, and distributing the water pressure to the manhole sidewall The purpose is to provide a multi-functional manhole fall prevention safety plate that can prevent the cover from breaking away by reducing the water pressure.

The present invention relates to a safety plate mounted on a manhole for wastewater and sewage, comprising: a safety ring inserted into a passage of an upper sphere constituting the manhole with a loose or interference fit; a safety dome protruding convexly with a predetermined curvature toward the center at the lower end of the safety ring to provide a function to prevent the cover from coming off, to prevent people from falling, and to block odor; a discharge port having a predetermined size that is arranged radially through the safety dome to drop materials introduced from the outside; A detachable member fastened to the safety ring and the upper sphere to fix the safety ring to a position adjacent to the cover of the manhole; characterized in that it comprises a.

At this time, the safety ring according to the present invention is characterized in that a detachable hole having a predetermined diameter is formed radially from the center so that the detachable member is interposed therethrough and fastened with the upper sphere.

In addition, the safety dome according to the present invention is characterized in that it is formed in a hemispherical shape having the same outer diameter and thickness as the safety ring.

In addition, the detachable member according to the present invention, the detachable bolt interposed from the inner side toward the outer side of the safety ring fastened to the upper sphere; It is characterized by consisting of; a protective washer interposed between the safety ring and the head of the detachable bolt to disperse the fastening pressure applied to the safety ring and prevent loosening.

In addition, the protection washer according to the present invention is characterized in that one side in close contact with the safety ring is rounded with the same curvature as the inner diameter of the safety ring to prevent deformation and damage of the safety ring and improve the strength of fastening with the upper sphere. to be

In addition, the safety dome according to the present invention, safety ribs protruding and arranged in a predetermined pattern on the upper surface to prevent breakage by distributing the water pressure flowing back to the surface from the conduit of the manhole and the impact of a person falling into the manhole; characterized by the formation of

In addition, the safety rib according to the present invention, a linear rib that is straightly spread radially on the upper surface of the safety dome; Circular ribs surrounded in a ring shape at predetermined intervals on the upper surface of the safety dome; It is characterized in that it is formed by any one of them or formed in combination.

In addition, in the safety dome according to the present invention, the water pressure applied when rainwater flows backward from the manhole conduit to the surface is transmitted to the upper sphere while acting as a deformation stress to spread outward. Fixed strength proportional to water pressure It is characterized in that it prevents the separation of the cover due to the reverse flow of rainwater.

In addition, the safety dome according to the present invention, when rainwater flows backward from the conduit of the manhole to the surface, the lower surface adjacent to the upper sphere so that the deformation stress that is closed together with the inflow of rainwater into the gap between the upper sphere and the safety ring is blocked. It is characterized in that a hemispherical groove of a predetermined curvature is formed on the edge to cause eddy vortex or convert the applied water pressure to be transmitted to the upper sphere.

First, in the present invention, the safety ring and the safety dome constituting the safety plate are formed of a synthetic resin material having a low manufacturing cost, light weight and relatively high rigidity compared to metal, so that transportation and installation are easy, as well as excellent corrosion resistance and chemical resistance. There is an effect that can guarantee a high lifespan.

Second, the present invention forms a hemispherical safety dome that narrowly blocks the manhole passage, so that the upper surface is made of a concave curved surface to minimize interference with a falling person, thereby preventing damage to the body due to a fall. It consists of a convex curved surface to eddy and refract the air and rainwater that flow back to the surface to block odor and prevent the cover from escaping. Even if strong water pressure is applied due to high water pressure, there is an effect of preventing the cover from being separated due to the reverse flow of rainwater.

Third, the present invention forms safety ribs protruding and arranged in a predetermined pattern on the upper surface of the safety dome, thereby dispersing the impact of a person falling and the water pressure flowing back to the surface to the side wall of the manhole, so that excellent safety and high lifespan can be expected. there is.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a cross-sectional view showing a manhole equipped with a safety plate according to the present invention.
2 is a perspective view showing a safety plate according to the present invention as a whole.
3 is a cross-sectional view showing a safety plate according to the present invention by cutting it;
4 is an enlarged view showing in detail the fastening member of the safety plate according to the present invention.
5 is a reference diagram showing stress distribution applied when water pressure is applied to the safety plate according to the present invention by reverse flow of rainwater.
6 and 7 are configuration diagrams showing a safety plate according to a modification of the present invention.

Hereinafter, various embodiments of this document will be described with reference to the accompanying drawings. However, this is not intended to limit the technology described in this document to specific embodiments, and it should be understood that it includes various modifications, equivalents, and/or alternatives of the embodiments of this document. In connection with the description of the drawings, like reference numerals may be used for like elements.

In addition, expressions such as “first,” “second,” etc. used in this document may modify various components regardless of order and/or importance, and to distinguish one component from another. It is used only and does not limit the corresponding components. For example, 'first part' and 'second part' may indicate different parts regardless of order or importance. For example, a first element may be named a second element without departing from the scope of rights described in this document, and similarly, the second element may also be renamed to the first element.

In addition, terms used in this document are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the technical field described in this document. Among the terms used in this document, terms defined in general dictionaries may be interpreted as having the same or similar meanings as those in the context of the related art, and unless explicitly defined in this document, ideal or excessively formal meanings. not be interpreted as In some cases, even terms defined in this document cannot be interpreted to exclude the embodiments of this document.

The present invention relates to a safety plate mounted on a manhole (1) for sewage and sewage as shown in FIG. 1, and as shown in FIGS. 40) as a main component, and is a multi-functional manhole fall prevention safety plate.

In the safety plate of the present invention, the safety ring 10 and the safety dome 20, except for the detachable member 40, which is a fastening element, are formed of high-strength synthetic resin material to ensure a long lifespan with excellent corrosion resistance and chemical resistance.

First, the safety ring 10 is a fixing part inserted into the passage of the upper sphere 1a constituting the manhole 1 as shown in FIG. 1 with a loose or interference fit.

As shown in FIG. 4, the safety ring 10 is formed with a detachable hole 11 having a predetermined diameter, which is radially penetrated from the center.

That is, the detachable hole 11 receives the detachable bolt 41 of the detachable member 40 to be described later through and induces fixation to the upper sphere 1a.

And, as shown in FIG. 2, the safety dome 20 is formed convexly protruding with a predetermined curvature toward the center at the lower end of the safety ring 10.

The safety dome 20 narrowly blocks the passage of the manhole 1 to prevent the cover from coming off, to prevent people from falling, and to block odor.

That is, the safety dome 20 supports people not to fall to the bottom surface inside the manhole even if a person falls into the passage due to the separation of the cover.

In addition, it minimizes the air flowing back to the surface to block odors and prevents the cover from escaping by lowering the flow rate and flow rate of backflowing rainwater.

Here, the safety dome 20 is preferably formed in a hemispherical shape having the same outer diameter and thickness as the safety ring 10 as shown in FIG. 3 .

The upper surface of the safety dome 20 is made of a concave curved surface, and the lower surface is made of a convex curved surface.

Therefore, due to the concave upper surface, interference and collision with a person falling into the aisle can be minimized, preventing leg and ankle fractures due to sudden falls.

In addition, due to the convex lower surface, air and rainwater flowing back to the surface are eddy-refracted toward the upper sphere 1a, minimizing outflow to the ground.

The outlet 30 is arranged through the safety dome 20 in a predetermined size as shown in FIGS. 1 to 3 to allow rainwater or dirt introduced from the outside to fall into the manhole 1.

In addition, the outlet 30 can check the bottom state of the manhole through the through hole without removing the manhole safety plate, and is installed between the safety ribs 21 in a plurality of circular or oval shapes.

Finally, the detachable member 40 is fastened to the upper sphere 1a as shown in FIGS. 1 to 3 to fix the safety ring 10 to a position adjacent to the cover of the manhole 1.

As shown in FIG. 4, the detachable member 40 is composed of a detachable bolt 41 and a protective washer 42.

The detachable bolt 41 is interposed through the detachable hole 11 on the inside of the safety ring 10 and fastened with the upper sphere 1a.

The protective washer 42 is interposed between the head of the safety ring 10 and the detachable bolt 41 to distribute the fastening pressure acting on the safety ring 10 and prevent loosening.

Here, one side of the protection washer 42 in close contact with the safety ring 10 is formed round with the same curvature as the inner diameter of the safety ring 10.

Therefore, even if a strong fastening pressure is applied from the detachable bolt 41, deformation and damage of the safety ring 10 can be prevented, so that a firm and close fixing performance can be secured.

At this time, as the safety dome 20 is formed in a hemispherical shape as described above, it is possible to prevent separation of the cover due to reverse flow of rainwater even when strong water pressure is applied.

That is, when water pressure is applied to the lower surface of the safety dome 20 as the lower surface protrudes convexly, deformation stress to spread outward from the safety ring 10 as a starting point is applied as shown in FIG. 5 .

As a result, the water pressure applied to the safety dome 20 is distributed to the inner wall of the concrete upper sphere 1a and has a fixed strength proportional to the water pressure applied to the safety dome 20.

Therefore, even if the water pressure of backflowing rainwater is strongly applied due to flooding, it can maintain a standing posture without being damaged or separated, which not only significantly lowers the flow rate and flow rate of rainwater flowing back to the surface, but also reduces the water pressure applied from the bottom of the manhole to the concrete upper sphere. By distributing it to the inner wall of (1a) and significantly reducing the water pressure, it prevents the cover from escaping.

On the other hand, the safety dome 20 is formed with a safety rib 21 protruding and arranged in a predetermined pattern on the upper surface as shown in FIGS. 2 and 3 .

That is, the safety rib 21 enhances the durability of the safety dome 20 and serves as a reinforcement to absorb the water pressure of rainwater flowing back to the surface from the conduit of the manhole 1 and the impact of falling, thereby preventing damage and stability can be obtained.

The safety rib 21 is formed as a linear rib 21a extending straight radially on the upper surface of the safety dome 20 as shown in FIG. 3A, or formed in a ring shape at a predetermined interval on the upper surface of the safety dome 20 as shown in FIG. 6A. Ji can be formed with a circular rib (21b).

Of course, according to the diameter of the safety ring 10 and the curvature of the safety dome 20, the linear rib 21a and the circular rib 21b may be formed in combination as shown in FIG. 6B.

In addition, as shown in FIG. 7, the safety dome 20 may further form a hemispherical groove 22 having a predetermined curvature at an edge of the lower surface adjacent to the upper sphere 1a.

This hemispherical groove 22 blocks the inflow of rainwater into the gap between the upper sphere 1a and the safety ring 10 when rainwater flows back to the ground.

In addition, the hemispherical groove 22 blocks the deformation stress that reduces the diameter of the safety dome 20 by the water pressure applied to the edge of the safety dome 20 when the safety dome 20 is closed to the center.

In addition, the hemisphere groove 22 causes eddy currents in the backflow of rainwater toward the center or converts the applied water pressure to be transmitted to the lower wall surface of the upper sphere 1a.

Although the preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and is common in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, various modifications are possible by those with knowledge of, and these modified embodiments should not be individually understood from the technical spirit or perspective of the present invention.

1: manhole
1a: upper sphere
10: safety ring
11: detachment hole
20: safety dome
21: safety rib
21a: linear rib
21b: circular rib
22: hemisphere groove
30: outlet
40: detachable member
41: Detachable bolt
42: protection washer

Claims (7)

In the safety plate mounted on the sewage and sewage manhole (1),
A safety ring 10 inserted into the passage of the upper sphere 1a constituting the manhole 1 with a loose or interference fit;
a safety dome 20 protruding convexly with a predetermined curvature toward the center at the lower end of the safety ring 10 to provide a function to prevent the cover from coming off, to prevent people from falling, and to block odor;
a discharge port 30 having a predetermined size that is arranged radially through the safety dome 20 to drop materials introduced from the outside;
A detachable member 40 fastened to the safety ring 10 and the upper sphere 1a to fix the safety ring 10 to a position adjacent to the cover of the manhole 1
The detachable member 40,
A detachable bolt 41 that penetrates from the inside to the outside of the safety ring 10 and is fastened to the upper sphere 1a;
It consists of a protective washer 42 interposed between the head of the safety ring 10 and the detachable bolt 41 to disperse the fastening pressure applied to the safety ring 10 and prevent loosening,
The protection washer 42,
One side in close contact with the safety ring 10 is rounded with the same curvature as the inner diameter of the safety ring 10 to prevent deformation and damage of the safety ring 10 and improve the strength of fastening with the upper sphere 1a,
The safety dome 20,
Safety ribs 21 protruding and arranged in a predetermined pattern on the upper surface to prevent breakage by dispersing the water pressure flowing back to the surface from the conduit of the manhole 1 and the impact of a person falling into the manhole 1;
A safety plate for preventing a multifunctional manhole fall, characterized in that formed. The method of claim 1,
The safety ring 10,
Detachable holes 11 having a predetermined diameter arranged radially from the center so that the detachable member 40 is interposed therethrough and fastened to the upper sphere 1a;
A multi-functional manhole fall prevention safety plate, characterized in that formed. The method of claim 2,
The safety dome 20,
A multifunctional manhole fall prevention safety plate, characterized in that formed in a hemispherical shape having the same outer diameter and thickness as the safety ring (10). delete delete The method of claim 1,
The safety rib 21,
Linear ribs 21a extending straight radially on the upper surface of the safety dome 20;
Circular ribs (21b) surrounded in a ring shape at predetermined intervals on the upper surface of the safety dome (20);
A safety plate for preventing a multifunctional manhole fall, characterized in that it is formed by any one of or in combination. The method of claim 3,
The safety dome 20,
The water pressure applied when rainwater flows backward from the conduit of the manhole 1 to the surface acts as a deformation stress to spread outward, and as it is transferred to the upper sphere 1a, a fixed strength proportional to the water pressure is generated, so that the rainwater A safety plate for preventing a multifunctional manhole fall, characterized in that it prevents the separation of the cover due to reverse flow.

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