KR200480751Y1

KR200480751Y1 - Apparatus for preventing falling into manhole

Info

Publication number: KR200480751Y1
Application number: KR2020150005113U
Authority: KR
Inventors: 장석훈
Original assignee: 장석훈
Priority date: 2015-07-30
Filing date: 2015-07-30
Publication date: 2016-07-01

Abstract

The present invention relates to a manhole fall prevention apparatus.
The manhole fall prevention device of the present invention includes a manhole fixing portion fixed to an inner wall surface of a manhole; The hanger is hinged to be rotatable along an inner circumferential surface of the manhole fixing part. The hammock hanger is disposed horizontally so as to cover the manhole normally to prevent a fall of a pedestrian or a vehicle. In the case of heavy rain or flood, A plurality of fall preventive supporting plates rising upwardly from the manhole fixing portion by reverse flow water pressure to open the manhole; And a plurality of fall-down support plates provided on a lower portion of the plurality of fall-down support plates, the plurality of fall-down support plates being supported by the inner wall surface of the manhole when the fall- And a rotation preventive support restricting rotation of the plurality of fall preventing support plates so as to be arranged in a horizontal state without rotating.

Description

[0001] APPARATUS FOR PREVENTING FALLING INTO MANHOLE [

More particularly, the present invention relates to a manhole fall preventing apparatus, and more particularly, to a manhole fall preventing apparatus which can prevent a manhole from falling off a manhole by a manhole cover being opened in a manhole or various work processes, The present invention relates to a manhole fall prevention apparatus capable of preventing a safety accident such as falling into a manhole in advance.

Generally, the manhole is formed as a deep hole of a square or circular shape on a road or a side of a road, and various facilities such as collecting various kinds of sewage or sewage and various communication wires, gas or oil piping are installed therein. The upper part is closed by the manhole cover to prevent foreign matter from entering into the manhole, while preventing a pedestrian or a vehicle (including two-wheeled and four-wheeled vehicles) from falling into the inside during traveling.

However, in order to carry out such tasks as cleaning the sludge, inspecting faults of various facilities installed therein, replacing parts and repairing faults, the operator manually opens the manhole cover to open the manhole, The manhole cover can be left open naturally due to the backwashing pressure of the sewage or the sewage. At this time, the pedestrian or the driver of the vehicle moving on the upper part of the manhole with the manhole cover opened can not recognize the open manhole, Accidental human accidents occurred frequently.

KR 10-0750497 B1, 2007. 08. 11. KR 20-2014-0002669 U, 2014. 05. 09. KR 10-1184646 B1, 2012. 09. 14. KR 10-1092839 B1, Dec 06,

Accordingly, the present invention has been proposed in order to solve the problems of the prior art, and it is an object of the present invention to provide a manhole or a car which is capable of stably returning wastewater or stormwater during heavy rain or flood, The present invention provides a manhole fall prevention device that can prevent a safety accident such as falling down to a manhole.

According to one aspect of the present invention, there is provided a manhole fixing unit comprising: a manhole fixing unit having a stepped portion recessed inwardly from an inner wall surface and fixed to an inner wall surface of a manhole having a lower portion extended from an upper portion;
The hanger is hinged to be rotatable along an inner circumferential surface of the manhole fixing part. The hammock hanger is disposed horizontally so as to cover the manhole normally to prevent a fall of a pedestrian or a vehicle. In the case of heavy rain or flood, A plurality of fall preventive supporting plates rising upwardly from the manhole fixing portion by reverse flow water pressure to open the manhole; And
Wherein the plurality of fall preventing support plates are supported by the inner wall surface of the manhole when the fall preventive support plate is lowered by its own weight in a state where the plurality of fall preventive support plates are lifted up so that the fall preventive support plates are excessively rotated And an anti-rotation support for restricting the rotation of the plurality of fall prevention support plates so as to be horizontally disposed,
Wherein the plurality of fall preventive support plates are installed at the lower portions of the plurality of fall preventive support plates and are lifted and lowered together with the rising and falling of the fall preventive support plates so that the plurality of fall preventive support plates extend in the vertical direction with respect to the inner wall surface of the manhole, A connecting portion that is bent in a direction parallel to the inner wall surface of the manhole from the coupling portion, and a coupling portion that is recessed inward from the inner wall surface of the manhole so as to be parallel to the coupling portion, And a support portion that is bent at a jaw portion and supported at a lower portion of the step portion,
Wherein the plurality of fall-down support plates have a circular shape and are formed of any one of a fan blade shape, a propeller shape,
The plurality of fall prevention support plates are divided into four,
The plurality of fall preventive support plates are provided at an angle inclined with respect to the inner wall surface of the manhole by an anti-rotation support base capable of rotating together with the fall preventive support plate at the time of rising due to the high backwash water pressure from the lower portion of the manhole Wherein a part of the plurality of fall preventing support plates is exposed to an upper portion of the manhole.

delete

As described above, according to the present invention, when the inside of a manhole is opened naturally by a high reverse-flow water pressure in a heavy rain or a flood, and when a high reverse-flow water pressure is removed, It is possible to stably return the wastewater or stormwater during heavy rain or flood, thereby preventing the manhole fall preventing device from being detached from the manhole by the high backwash water pressure, and thus the pedestrian or the vehicle falls into the manhole Etc. can be prevented in advance.

1 is an assembled perspective view showing a manhole fall prevention device according to Embodiment 1 of the present invention.
FIG. 2 is an exploded perspective view of the manhole fall prevention device shown in FIG. 1. FIG.
3 is a sectional view showing a state in which the manhole fall prevention device shown in Fig. 1 is installed inside a manhole;
FIGS. 4 and 5 are diagrams for explaining operational characteristics of a manhole fall prevention apparatus according to the first embodiment of the present invention. FIG.
FIG. 6 is an assembled perspective view showing a manhole fall prevention device according to Embodiment 2 of the present invention; FIG.
7 is an exploded perspective view of the manhole fall prevention device shown in Fig.
8 is a sectional view showing a state in which the manhole fall prevention device shown in Fig. 6 is installed inside a manhole;
FIGS. 9 and 10 are diagrams for explaining the operational characteristics of the manhole fall prevention apparatus according to the second embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described below in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various other forms.

These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art to which the present invention belongs. And this invention is only defined by the scope of the claims. Accordingly, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, like reference numerals refer to like elements throughout the specification. Moreover, terms used herein (to be referred to) are intended to illustrate embodiments and are not intended to limit the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense that is commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Technical features of the present invention will now be described in detail with reference to the accompanying drawings.

1 is an exploded perspective view of a manhole fall prevention device according to a first embodiment of the present invention, FIG. 2 is an exploded perspective view of the manhole fall prevention device shown in FIG. 1, and FIG. 3 is a cross- Sectional view showing a state in which the manhole fall prevention device is installed inside the manhole.

1 to 3, the manhole fall prevention device 10 according to the first embodiment of the present invention is constructed such that the entrance of the manhole 1 is covered by a relatively lightweight wire mesh structure of a manhole cover A manhole cover provided at the upper part of the manhole instead of a conventional manhole cover having a steel structure and installed to cover the entrance of the manhole 1 may be used as a manhole cover, And can be installed inside.

As shown in Figs. 3 and 4, such a manhole fall prevention apparatus 10 prevents a safety accident such as a pedestrian or a vehicle falling down into the manhole 1 by closing the manhole 1 in a normal state, As shown in FIG. 5, the manhole 1 is opened to prevent stagnant sewage or rainwater from striking back into the manhole 1 to be staggered backward and to be released by the high reverse flow water pressure.

2 and 3, the manhole fall prevention device 10 is installed at the inside or the entrance of the manhole 1 and includes a manhole fixing portion 11, a fall prevention support plate 12 and a rotation prevention support 13 do.

2 and 3, one end of the manhole fixing part 11 is fixed to the inner wall surface 1a of the manhole 1 and a fall preventive support plate 12 is rotatably coupled to the other side.

The manhole fixing part 11 has a structure corresponding to the shape of the inner wall surface 1a of the manhole 1 such as a circular ring or a square ring structure &Lt; / RTI > Preferably, the fall preventing support plate 12 is formed in a circular ring structure so that it can rotate smoothly without interfering with each other when it rotates upward.

As shown in FIG. 3, one end of the manhole fixing part 11 can be embedded in the inner wall surface 1a of the manhole 1 and fixed depending on the material of the inner wall surface 1a of the manhole 1. [ And can be fastened and fixed to the inner wall surface 1a of the manhole 1 through a fastening member such as a bolt or a nail for concrete.

For example, when the inner wall surface 1a of the manhole 1 is made of a material such as earth which is easy to be buried, the manhole fixing portion 11 is formed so that one side is embedded in the inner wall surface 1a of the manhole 1, And when the inner wall surface 1a of the manhole 1 is made of a concrete material, it can be fastened to the inner wall surface 1a of the manhole 1 through a separate fastening member such as a bolt or a nail for concrete .

The manhole fixing part 11 is provided with a plurality of hinge parts 111 to which the hinge pins 14 are coupled so that the fall preventing support plates 12 can be rotated through the hinge pins 14 respectively on the other side .

The fall preventing support plate 12 has a hinge portion 121 provided on one side portion (outer side portion) thereof pivotally coupled to the hinge portion 111 of the manhole fixing portion 11 through a hinge pin 14. [ The entire shape of the plurality of fall preventing support plates 12 is circular, and each of the fall preventing support plates 12 may be formed of a fan blade shape, a propeller shape, or a Tai Chi pattern. However, the shape of the fall preventing support plate 12 of the present invention is not necessarily limited to the above-described shapes. The shape of the fall preventive support plate 12, which is circular, and does not interfere with each other when it rotates in the up- All of which can be applied.

FIGS. 4 and 5 are diagrams for explaining the operation characteristics of the manhole fall prevention apparatus according to the first embodiment of the present invention. FIG. 4 illustrates a state in which a normal manhole fall prevention apparatus is installed horizontally inside a manhole And FIG. 5 is a sectional view for explaining a state of a manhole fall prevention apparatus when rain or storm water or storm water flows backward.

As shown in Fig. 4, the fall preventive support plate 12 is normally supported on the upper portion of the anti-rotation support base 13 and arranged in a horizontal state. Accordingly, the inside of the manhole (1) can be closed by the fall preventing support plate (12) to prevent the fall of the pedestrian or the vehicle. As shown in FIG. 5, the fall preventive support plate 12 ascends upwardly from the lower portion of the manhole 1 in the event of heavy rain or flood, The manhole 1 is opened to stably return the wastewater or rainwater through the manhole 1. [

As shown in FIG. 2, the fall preventive support plate 12 is formed by dividing four, for example, into three or less, or five, corresponding to the shape and size of the manhole 1 or the fall- Or more. The divided fall preventive support plates 12 are preferably spaced apart from each other by an interval of about 1 mm to 10 mm so as not to interfere with each other when rotating, and to prevent foreign matter from being caught between them.

As shown in FIG. 5, each of the fall preventive support plates 12 rises up to the upper portion of the manhole fixing portion 11 due to a high backwash water pressure and a high backwash water pressure so that the manhole 1 is opened, And when the water pressure is removed, it is preferably made of a metal plate material having a predetermined weight so as to return to its original position (a position where it is normally arranged in a horizontal state) by its own weight.

Further, a plurality of holes (not shown) may be further formed in the fall preventing support plate 12 to discharge the gas filled in the manhole 1 to the outside or to ventilate the inside air.

Further, on the upper surface of the fall prevention support plate 12, a buffer member (not shown) of rubber material may be further provided to minimize the shock transmitted to the pedestrian when the pedestrian falls. At this time, the cushioning member may have the same shape as the fall prevention support plate 12.

As shown in FIGS. 2 and 4, the anti-rotation support base 13 is installed at the lower portion of the anti-fall support plate 12 so that the anti-fall support plate 12 is floated upward due to high backwash water pressure, The downfalling hydraulic pressure is removed and supported by the inner wall surface 1a of the manhole 1 when the fall prevention support plate 12 is lowered by its own weight so that the fall preventive support plate 12 is excessively rotated to the lower portion of the manhole 1 So that the fall preventive support plate 12 restricts the rotation.

As shown in FIG. 2, each of the anti-rotation support rods 13 may be provided on each of the fall prevention support plates 12 so that the anti-rotation support rods 13 can be rotated together with the rise and fall of the fall prevention support plate 12.

4, when the inner wall surface 1a of the manhole 1 is formed so as to have the same inner diameter as the upper and lower portions of the manhole 1, A fastening part 131 extending in a direction perpendicular to the inner wall surface 1a of the manhole 1 and fastened to a lower portion of a plurality of fall prevention support plates 12 and a fastening part 131 fastened from the fastening part 131 to the inner wall surface 1a And a support portion 132 that is bent in a direction parallel to the inner wall surface 1a of the manhole 1 and supported by the inner wall surface 1a.

It is preferable that the supporting portion 132 is further provided with a buffering member (not shown) made of rubber on the outer side, that is, on the outer side which is supported in contact with the inner wall surface 1a of the manhole 1. When the raised fall preventive support plate 12 is lowered, the anti-rotation support base 13 is lowered in cooperation with the lowered anti-fall support plate 12. At this time, the support portion 132 of the anti-rotation support base 13 contacts the inner wall face 1a An impact sound due to a collision is generated between the metal support 132 and the inner wall surface 1a of the manhole 1. [ Such an impact sound may cause a large noise. Accordingly, in the present invention, a shock absorbing member made of a rubber material is provided on the outer surface of the support portion 132 to mitigate the impact noise generated during collision between the support portion 132 and the inner wall surface 1a of the manhole 1, have.

FIG. 6 is an assembled perspective view illustrating a manhole fall prevention apparatus according to a second embodiment of the present invention, FIG. 7 is an exploded perspective view of the manhole fall prevention apparatus shown in FIG. 6, and FIG. Sectional view showing a state in which the manhole fall prevention device is installed inside the manhole.

6 to 8, the manhole fall prevention device 20 according to the second embodiment of the present invention is similar to the manhole fall prevention device 10 according to the first embodiment in that the manhole fixing portion 21, 22 and an anti-rotation support base 23. Since the manhole fixing unit 21 and the fall prevention support plate 22 have the same configuration as the manhole fixing unit 11 and the fall prevention support plate 12 according to the first embodiment, .

FIGS. 9 and 10 are diagrams for explaining the operation characteristics of the manhole fall prevention apparatus according to the second embodiment of the present invention, and FIG. 9 shows a state where the manhole fall prevention apparatus is normally installed horizontally in the manhole And FIG. 10 is a sectional view for explaining the state of the manhole fall prevention apparatus when water or rainwater in heavy rain or storm water flows backward.

As shown in FIGS. 3 and 4, the inside of the manhole 1 may have the same diameter in the vertical direction, or may have a structure in which the lower portion is expanded as compared with the upper portion, as shown in FIGS.

8 and 9, when the fall preventive support plate 22 is lowered, the inside of the manhole 1 on which the anti-rotation support rods 23 are supported is expanded, that is, When the lower stepped portion 1b is formed so as to be inwardly recessed from the inner wall surface 1a and the lower portion is expanded inwardly than the upper portion so that the anti-rotation support base 23 is stably supported on the step portion 1b of the manhole 1 The anti-rotation support base 23 includes a coupling portion 231 extending in a direction perpendicular to the inner wall surface 1a of the manhole 1 and fastened to a lower portion of the plurality of fall prevention support plates 22, A connecting portion 232 that is bent in a direction parallel to the inner wall surface 1a of the manhole 1 and a connecting portion 232 that is recessed inward from the inner wall surface 1a of the manhole 1 from the connecting portion 232 so as to be parallel to the connecting portion 231 And a support portion 233 bent in the direction of the jaw portion 1b and supported at the lower portion of the step portion 1b.

The fall preventive support plate 22 is provided with the normally anti-rotation support stand 23 as shown in FIG. 9, like the manhole fall preventive apparatus 10 according to the first embodiment, The inside of the manhole 1 can be closed by the fall-down support plate 12 to prevent a fall of a pedestrian or a vehicle.

As shown in FIG. 10, when the flood water or the flood is backwashed from the lower part of the manhole 1 to a high backwash water pressure, the fall preventive support plate 22 is supported by the hinge pin 24 coupled to the hinge part 221 As the hinge portion 211 of the manhole fixing portion 21 is pivoted upward, the manhole 1 is opened so that the sewage or rainwater can stably flow back through the manhole 1.

As described above, the technical idea of the present invention has been specifically described in the preferred embodiments, but the preferred embodiments described above are intended to be illustrative, not limiting. It will be understood by those of ordinary skill in the art that various embodiments are possible through combinations of Embodiments 1 and 2 of the present invention within the scope of the technical idea of the present invention.

10, 20: Manhole fall prevention device
11, 21: Manhole fixing section
12, 22: fall prevention support plate
13. 23: Anti-rotation support
14, 24: Hinge pin
1: Manhole
1a: inner wall (manhole)
1b: Step jaw (manhole)

Claims

A manhole fixing part provided on the inner wall surface of the manhole, the manhole having a stepped portion formed inwardly recessed from the inner wall surface and having a lower portion extended from the upper portion;
The hanger is hinged to be rotatable along an inner circumferential surface of the manhole fixing part. The hammock hanger is disposed horizontally so as to cover the manhole normally to prevent a fall of a pedestrian or a vehicle. In the case of heavy rain or flood, A plurality of fall preventive supporting plates rising upwardly from the manhole fixing portion by reverse flow water pressure to open the manhole; And
Wherein the plurality of fall preventing support plates are supported by the inner wall surface of the manhole when the fall preventive support plate is lowered by its own weight in a state where the plurality of fall preventive support plates are lifted up so that the fall preventive support plates are excessively rotated And an anti-rotation support for restricting the rotation of the plurality of fall prevention support plates so as to be horizontally disposed,
Wherein the plurality of fall preventive support plates are installed at the lower portions of the plurality of fall preventive support plates and are lifted and lowered together with the rising and falling of the fall preventive support plates so that the plurality of fall preventive support plates extend in the vertical direction with respect to the inner wall surface of the manhole, A connecting portion that is bent in a direction parallel to the inner wall surface of the manhole from the coupling portion, and a coupling portion that is recessed inward from the inner wall surface of the manhole so as to be parallel to the coupling portion, And a support portion that is bent at a jaw portion and supported at a lower portion of the step portion,
Wherein the plurality of fall-down support plates have a circular shape and are formed of any one of a fan blade shape, a propeller shape,
The plurality of fall prevention support plates are divided into four,
The plurality of fall preventive support plates are provided at an angle inclined with respect to the inner wall surface of the manhole by an anti-rotation support base capable of rotating together with the fall preventive support plate at the time of rising due to high backwash water pressure from the lower portion of the manhole Wherein a portion of the plurality of fall-down support plates is exposed to an upper portion of the manhole.

delete