KR20220040181A - Safety apparatus for manhole - Google Patents

Abstract

The present invention relates to a safety apparatus for a manhole, comprising a fixing part fixed to the opening of a manhole, a fall prevention part extending from the fixing part and surrounding the upper part of the opening to prevent a fall, an opening and closing part connected to the fall prevention part to open and close the fall prevention part, and a locking part allowing or restricting the opening and closing operation of the opening and closing part. The safety apparatus of the present invention can be firmly fixed to a manhole.

Description

SAFETY APPARATUS FOR MANHOLE

The present invention relates to a safety device for a manhole, and more particularly, to a safety device for a manhole capable of preventing a fall into the manhole.

In general, a manhole is a structure for allowing workers to enter and exit, and may be divided into water/sewage, rainwater, sewage, and telecommunications according to its use.

These manholes may be installed in water and sewage treatment facilities such as sewage treatment plants, water purification plants, stormwater pumping stations, and sewage storage tanks, or in roadways or sidewalks to maintain and repair water/sewer pipes, rainwater pipes, sewage pipes and telecommunication pipes buried underground. .

On the other hand, when work inside the manhole is required, the manhole is opened by removing the manhole cover for entry and exit into the manhole, and accordingly, accidents in which pedestrians, objects, etc. fall into the manhole frequently occur.

In order to solve this problem, conventionally, a rubber cone or a safety fence is installed, but the rubber cone or safety fence is not firmly fixed to the ground, so it is pushed with a small force, and there is a problem that it cannot substantially prevent a fall accident such as a pedestrian. there is.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 10-1815976 (registered on Jan. 02, 2018, title of the invention: safety manhole).

An object of the present invention is to provide a safety device for a manhole that can be firmly fixed to the manhole.

In addition, an object of the present invention is to provide a safety device for a manhole that can selectively allow entry and exit into the manhole while preventing a fall into the manhole.

A safety device for a manhole according to the present invention in order to solve the above problems includes: a fixing part fixed to the opening of the manhole; a fall prevention part extending from the fixing part and wrapping the upper part of the opening part to prevent a fall; an opening and closing part connected to the fall prevention part and opening and closing the fall prevention part; and a locking part installed on the fall prevention part and the opening/closing part, and allowing or restricting the opening/closing operation of the opening/closing part.

In addition, the fixing part may include: a fixing member disposed to face the opening and provided with a communication part communicating with the opening; and an insertion part extending from the fixing member and inserted into the opening to fix the fixing member.

In addition, the fixing member has a wider width than the width of the insertion portion.

In addition, the fixing part, is provided between the fixing member and the ground, the fixing member to prevent the relative movement with respect to the ground; it further includes a;

In addition, the fall prevention unit includes a material of fiber-reinforced plastic.

In addition, the fall prevention part, a plurality of first fall prevention members that are arranged to be spaced apart from the upper side of the fixing part, one side of which is opened; and a plurality of second fall prevention members extending from the fixing part to connect the plurality of first fall prevention members, and to be spaced apart from each other along the circumference of the first fall prevention member.

In addition, the second fall prevention member, a pair of first supports disposed at the end of the first fall prevention member; and a plurality of second supports arranged to be spaced apart from each other by a predetermined distance along the circumference of the first fall prevention part between a pair of the first supports.

In addition, the opening and closing part, a door part disposed on one side of the first fall prevention member, forming a closed curve together with the first fall prevention member; and a hinge part extending from the door part and rotatably connected to any one of the first supports.

In addition, the locking unit may include: a first locking member fixed to the other first support; and a second locking member that is rotatably connected to the door part and interferes with the first locking part as it rotates to one side to limit rotation of the door part.

The safety device for a manhole according to the present invention can effectively prevent a fall accident of a pedestrian, an object, etc. as the fixed part is restricted from moving on the opening of the manhole.

In addition, the safety device for a manhole according to the present invention can alleviate the impact caused by a collision as the fall prevention member includes a material of fiber-reinforced plastic, and can achieve weight reduction.

In addition, since the safety device for a manhole according to the present invention can open the fall prevention member by the opening and closing part, it is possible to solve the inconvenience of having to repeat installation and dismantling for a worker's entry and exit.

In addition, the safety device for a manhole according to the present invention can prevent the opening and closing part from arbitrarily opening the fall prevention member by the locking part.

1 is an installation state diagram schematically showing an installation state of a safety device for a manhole according to an embodiment of the present invention.
Figure 2 is an installation state diagram showing in more detail the installation state of the safety device for a manhole according to an embodiment of the present invention.
3 is a perspective view schematically showing the configuration of a safety device for a manhole according to an embodiment of the present invention.
Figure 4 is a perspective view showing an open state of the opening and closing portion of the safety device for a manhole according to an embodiment of the present invention.
5 is an enlarged view schematically illustrating the configuration of a locking unit according to an embodiment of the present invention.
6 is a perspective view schematically showing the configuration of a safety device for a manhole according to another embodiment of the present invention.
Figure 7 is an installation state diagram showing the installation state of the safety device for a manhole according to another embodiment of the present invention.

Hereinafter, an embodiment of a safety device for a manhole according to the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.

In addition, in this specification, when it is said that a certain part is "connected (or connected)" with another part, it is not only "directly connected (or connected)" but also "with another member interposed therebetween" Indirectly connected (or connected)" is included. In this specification, when a part "includes (or includes)" a certain component, it does not exclude other components unless otherwise stated, but further "includes (or includes)" other components. means you can

Also, like reference numerals may refer to like elements throughout. Even if the same or similar reference signs are not mentioned or described in a particular drawing, the reference signs may be described based on different drawings. Also, even if there are parts to which reference signs are not indicated in specific drawings, those parts may be described based on other drawings. In addition, the relative differences in the number, shape, size, and size of detailed components included in the drawings of the present application are set for convenience of understanding, and do not limit the embodiments and may be implemented in various forms.

Figure 1 is an installation state diagram schematically showing the installation state of the safety device for a manhole according to an embodiment of the present invention, Figure 2 is an installation state diagram showing in more detail the installation state of the safety device for a manhole according to an embodiment of the present invention 3 is a perspective view schematically showing the configuration of a safety device for a manhole according to an embodiment of the present invention, and FIG. 4 is a perspective view showing an open state of the opening and closing part of the safety device for a manhole according to an embodiment of the present invention am.

1 to 4 , the safety device 1 for a manhole according to an embodiment of the present invention includes a fixing part 100 , a fall prevention part 200 , an opening and shutting part 300 , a locking part 400 , and a display part. (500).

The fixing part 100 is fixed to the opening 11 communicating the inner space of the manhole 10 with the outside to support the safety device 1 for a manhole according to an embodiment of the present invention. The fixing part 100 according to an embodiment of the present invention includes a fixing member 110 and an insertion part 120 .

The fixing member 110 is disposed to face the opening 11 to provide a space in which the fall prevention part 200 to be described later can be installed. The fixing member 110 may be supported on the opening 11 as one surface is in direct contact with the ground 2 , and otherwise may be indirectly supported on the opening 11 by the non-slip part 130 to be described later. . The fixing member 110 may be provided to have a wider width than the width of the insertion part 120 to be described later. Accordingly, the area supported by the ground 2 is increased for the fixing member 110 to more firmly support the configuration of the fall prevention unit 200 and the like.

The fixing member 110 may be provided with a communication part 111 communicating with the opening 11 of the manhole 10 . Accordingly, the communication part 111 may allow a worker to enter and exit the opening 11 in a state in which the fixing member 110 is supported on the opening 11 .

The fixing member 110 may be provided with a weight reducing part 112 formed through the fixing member 110 to reduce the weight of the fixing member 110 . The weight reduction part 112 may be provided in plurality and may be disposed along the circumferential direction of the fixing member 110 . Accordingly, the weight reduction unit 112 can make it easier to transport or install the safety device 1 for a manhole according to an embodiment of the present invention.

The fixing member 110 according to an embodiment of the present invention is formed to have a substantially disk shape and is disposed on the upper portion of the opening 11 . In the central portion of the fixing member 110 , a communication portion 111 having a diameter corresponding to the diameter of the opening 11 is formed through the fixing member 110 . A plurality of weight reduction parts 112 provided in the form of a hole penetrating vertically through the fixing member 110 are provided on the circumference of the fixing member 110, that is, at a portion where the fixing member 110 is in contact with the ground. They are arranged at equal intervals along the circumferential direction.

The insertion part 120 extends from the fixing member 110 and is inserted into the opening 11 to fix the fixing member 110 . More specifically, the insertion part 120 is inserted into the opening 11 to prevent the fixing member 110 from arbitrarily moving on the opening 11 as it interferes with the inner surface of the opening 11 . The insertion part 120 according to an embodiment of the present invention is formed in a shape in which a plurality of bars extending vertically from the lower end surface of the fixing member 110 are arranged in a circle along the circumferential direction of the fixing member 110 . The insertion part 120 is formed to have a width corresponding to the width of the opening 11 .

Alternatively, the insertion part 120 may be provided in a shape in which the width of the lower side is wider than the width of the upper side by extending obliquely from the lower end surface of the fixing member 110 . In this case, the insertion part 120 may include an elastic material having an elastic restoring force. Accordingly, the insertion part 120 presses the inner surface of the opening 11 in the state inserted into the opening 11 to be in close contact with the inner surface of the opening 11 , thereby more firmly fixing the fixing member 110 . .

The fall prevention unit 200 extends from the fixing unit 100 and wraps the upper portion of the opening 11 to separate the upper space of the opening 11 from the outside, thereby preventing the fall of workers, pedestrians, and other objects. The fall prevention unit 200 may include a material of fiber-reinforced plastic (FRP), which is a material that is hardened after impregnating a reinforcing fiber in a thermosetting resin composition. Accordingly, the fall prevention unit 200 can mitigate the impact in the event of a collision with a worker or a pedestrian, and can reduce the weight of the safety device 1 for a manhole according to an embodiment of the present invention. The fall prevention unit 200 may be provided to have a color or pattern such as yellow or red on the surface to visually prevent a pedestrian from approaching the opening 11 .

The fall prevention unit 200 according to an embodiment of the present invention includes a first fall prevention member 210 and a second fall prevention member 220 .

The first fall prevention member 210 is formed so that one side is opened, is provided in plurality, and is disposed to be spaced apart from each other in the upper direction of the fixing unit 100 . The first fall prevention member 210 according to an embodiment of the present invention is formed to have a ring shape in which a portion of the circumference is omitted. The first fall prevention member 210 is disposed horizontally with the ground. The plurality of first fall prevention members 210 extend in a vertical direction from the fixing member 110 , and each of the first fall prevention members 210 is spaced apart from each other by a predetermined interval. The number and spacing of the first fall prevention members 210 are not limited to the number and spacing shown in FIGS.

The second fall prevention member 220 extends from the fixing part 100 to connect the plurality of first fall prevention members. The second fall prevention member 220 is provided in plurality and is disposed to be spaced apart along the circumference of the first fall prevention member 210 . Accordingly, the second fall prevention member 220 is provided to form a substantially grid shape together with the first fall prevention member 210 . The second fall prevention member 220 may be integrally connected with the fixing unit 100 , and may be detachably connected from the fixing unit 100 .

The second fall prevention member 220 according to an embodiment of the present invention includes a first support 221 and a second support 222 .

The first support 221 is disposed at the end of the first fall prevention member 210 formed as one side of the first fall prevention member 210 is opened, and an opening and closing part 300 and a locking part 400 to be described later are installed. Make space for it to be. The first support 221 is provided as a pair and is disposed at both ends of the first fall prevention member 210, respectively. The first support 221 according to an embodiment of the present invention extends vertically from the upper surface of the fixing member 110 and is formed in the shape of a bar disposed in contact with the end of the first fall prevention member 210 . . The first support 221 is disposed in a direction parallel to the arrangement direction of the plurality of first fall prevention members 210 . The first support 221 is coupled to each of the first fall prevention members 210 by welding, screw coupling, etc. to integrally connect the plurality of first fall prevention members 210 to each other.

The second supporter 222 is provided in plurality, and each second supporter 222 is arranged to be spaced apart from each other by a predetermined distance along the circumference of the first fall prevention unit 210 between the first supports 221 . The second support 222 according to an embodiment of the present invention extends vertically from the upper surface of the fixing member 110 and is formed in the shape of a bar arranged in parallel with the first support 221 . Each of the second supports 222 is arranged at equal intervals along the circumference of the first fall prevention member 210 , that is, in the circumferential direction of the first fall prevention member 210 . The second support 222 is coupled to each of the first fall prevention members 210 by welding, screw coupling, or the like to integrally connect the plurality of first fall prevention members 210 to each other. The number and spacing of the second supports 222 are not limited to the number and spacing shown in FIGS.

The opening/closing unit 300 is connected to the fall prevention unit 200 , and is provided so that an operator can selectively enter and exit the fall prevention unit 200 by opening and closing the fall prevention unit 200 . The opening and closing part 300 according to an embodiment of the present invention includes a door part 310 and a hinge part 320 .

The door part 310 is disposed on one side of the first fall prevention member 210 , that is, the opened side of the first fall prevention member 210 . The door part 310 is provided to form a closed curve together with the first fall prevention member 210 when the fall prevention member 200 is closed. The door part 310 may be formed to have a lattice shape like the fall prevention member 200 .

The door part 310 according to an embodiment of the present invention is formed in an arc shape, is horizontally disposed with the ground 2 , and is spaced apart from the fixing member 110 by a predetermined distance above the first door member 110 . 311 and a plurality of second door members 312 formed in the shape of a rod, disposed in a direction perpendicular to the first door member 311, and integrally connecting the plurality of first door members 311 may include

The hinge part 320 extends from the door part 310 and is rotatably connected to any one of the first supports 221 to guide the rotational operation of the door part 310 . One side of the hinge part 320 according to an embodiment of the present invention is fixed to the second door member 312 disposed at the right end (refer to FIGS. 3 and 4 ) of the first door member 311 . The hinge part 320 is rotated on the first support 221 with the other side extending vertically from the second door member 312 and disposed at the right end (refer to FIGS. 3 and 4) of the first fall prevention member 210 . possible to connect The specific shape of the hinge part 320 is not limited to the shape shown in FIGS. 3 and 4 , and the technical idea of a shape capable of relatively rotating the door part 310 with respect to any one of the first supports 221 . Various design changes are possible within.

The locking unit 400 is installed on the fall prevention unit 200 and the opening and closing unit 300 , and allows or restricts the opening and closing operation of the opening and closing unit 300 . Accordingly, the locking unit 400 can prevent the opening and closing unit 300 from arbitrarily opening the fall prevention unit 200 .

5 is an enlarged view schematically illustrating the configuration of a locking unit according to an embodiment of the present invention.

3 to 5 , the locking part 400 according to an embodiment of the present invention includes a first locking member 410 and a second locking member 420 .

The first locking member 410 is fixed to the other first supporter 221 not connected to the hinge part 320 . The first locking member 410 is provided with a locking groove 411 which is recessed into the first locking member 410 and into which a second locking member 420 to be described later is inserted. The first locking member 410 according to an embodiment of the present invention is fixed to the first support 221 disposed on the left side (based on FIGS. 3 and 4 ) by welding, screwing, or the like. In the first locking member 410 , a locking groove 411 is vertically depressed from the upper surface of the first locking member 410 to the inside of the first locking member 410 .

The second locking member 420 is rotatably connected to the door part 310 . As the second locking member 420 rotates to one side, it interferes with the first locking part 410 to limit rotation of the door part 310 . The second locking member 420 may be provided with a gripper 421 that is formed to be gripped by an operator to rotate the second locking member 420 . One side of the second locking member 420 according to an embodiment of the present invention is rotatable to the second door member 312 disposed at the left end (based on FIGS. 3 and 4) of the first door member 311 . connected The second locking member 420 is formed so that the other side has a shape and a length that can be inserted into the locking groove 411 provided in the first locking member 410 . A gripper 421 is formed on the side surface of the second locking member 420 to protrude in a direction perpendicular to the longitudinal direction of the second locking member 420 .

The display unit 500 is coupled to the fall prevention unit 200 or the opening/closing unit 300, and visually provides information such as whether the opening 11 is opened to a worker or a pedestrian. The display unit 500 according to an embodiment of the present invention may be formed in a plate shape and fixed to the outside of the door unit 310 of the opening/closing unit 300 . The display unit 500 may be printed or attached to a warning phrase, a color, etc. notifying a worker or pedestrian of a danger. The text and color of the display unit 500 are not limited to the text and color of FIGS. 1 to 5 , and various design changes are possible within the technical idea of the text and color that can arouse the attention of workers or pedestrians.

Figure 6 is a perspective view schematically showing the configuration of a safety device for a manhole according to another embodiment of the present invention, Figure 7 is an installation state diagram showing the installation state of the safety device for a manhole according to another embodiment of the present invention. Hereinafter, descriptions overlapping with the safety device 1 for a manhole according to an embodiment of the present invention will be omitted for convenience of description.

6 and 7 , the fixing part 100 of the safety device 1 for a manhole according to another embodiment of the present invention may further include an anti-slip part 130 .

The non-slip part 130 is provided between the fixing member 110 and the ground surface 2, and prevents the fixing member 110 from moving relative to the ground. More specifically, the non-slip part 130 prevents the fixing member 110 from moving on the opening 11 by frictional force generated as it comes into contact with the ground 2 . Accordingly, the non-slip part 130 may include a material such as rubber having a high coefficient of friction. The non-slip part 130 according to an embodiment of the present invention is formed in the shape of a pad including a material having a high coefficient of friction and is attached to the lower surface of the fixing member 110 .

Hereinafter, the installation process and operating state of the safety device 1 for a manhole according to an embodiment of the present invention will be described in detail.

1 to 7 , when work inside the manhole 10 is required, the manhole cover (not shown) is removed to communicate the opening 11 with the outside.

Thereafter, the operator inserts the insertion part 120 into the opening 11 . In this case, the insertion part 120 prevents movement of the fixing member 110 by making contact with the inner surface of the opening 11 or pressing the inner surface of the opening 11 .

As the insertion part 120 is inserted into the opening 11, the non-slip part 130 disposed on the lower side of the fixing member 110 prevents movement of the fixing member 110 by frictional force generated in contact with the ground. do.

As the insertion part 120 is inserted into the opening 11, the fall prevention part 200 extending to the upper part of the fixing member 110 blocks the upper space of the opening 11 from the outside, so that workers, pedestrians, etc. 11) to prevent falling. In addition, the fall prevention unit 200 can prevent the fall of the pedestrian by blocking the approach of the pedestrian by the color or pattern of the surface.

On the other hand, since the fall prevention unit 200 includes a material of fiber-reinforced plastic, even when a pedestrian directly collides with the fall prevention unit 200, it is possible to prevent injuries to pedestrians by mitigating the impact by elastic deformation.

In addition, in a state in which the door unit 310 closes the fall prevention unit 200 , the second locking member 420 is inserted into the locking groove 411 provided in the first locking member 410 , and the door unit Rotation of 310 is limited. Accordingly, it is possible to prevent the opening and closing unit 300 from arbitrarily opening the fall prevention unit 200 .

On the other hand, when the safety device 1 for a manhole according to an embodiment of the present invention is installed in the opening 11 and then wants to enter and exit the manhole 10 , the operator has a holding part protruding from the second locking member 420 . The second locking member 420 is rotated in a clockwise direction (based on FIG. 5 ) by gripping the 421 .

Thereafter, the second locking member 420 comes out of the locking groove 411 , and the second locking member 420 is separated from the first locking member 410 to release the restraints from the rotation of the door part 310 .

Thereafter, the operator rotates the door unit 310 in a counterclockwise direction (based on FIG. 4 ) to open the fall prevention unit 200 .

Thereafter, the worker who entered the inside of the fall prevention unit 200 may enter and exit through the communication unit 111 through the opening 11 of the manhole 10 .

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and it is understood that various modifications and equivalent other embodiments are possible by those of ordinary skill in the art. will understand

Therefore, the technical protection scope of the present invention should be defined by the following claims.

1: Safety device for manhole 2: Ground
10: manhole 11: opening
100: fixing part 110: fixing member
111: communication part 112: weight reduction part
120: insert 130: non-slip part
200: fall prevention unit 210: first fall prevention member
220: second fall prevention member 221: first support
222: second support 300: opening and closing part
310: door part 311: first door member
312: second door member 320: hinge part
400: locking part 410: first locking member
411: lock groove 420: second locking member
421: grip unit 500: display unit

Claims (9)

A fixing part fixed to the opening of the manhole;
a fall prevention part extending from the fixing part and wrapping the upper part of the opening part to prevent a fall;
an opening and closing part connected to the fall prevention part and opening and closing the fall prevention part; and
Safety device for a manhole, comprising a; is installed in the fall prevention part and the opening and closing part, allowing or restricting the opening and closing operation of the opening and closing part.
The method of claim 1,
The fixing part,
a fixing member disposed to face the opening and having a communication part communicating with the opening; and
Manhole safety device comprising a; extending from the fixing member, inserted into the opening to fix the fixing member.
3. The method of claim 2,
The fixing member is a safety device for a manhole, characterized in that it has a wider width than the width of the insertion portion.
3. The method of claim 2,
The fixing part,
A safety device for manholes, further comprising a; provided between the fixing member and the ground, and preventing the fixing member from moving relative to the ground.
The method of claim 1,
The fall prevention part is a safety device for a manhole, characterized in that it comprises a material of fiber-reinforced plastic.
The method of claim 1,
The fall prevention unit,
a plurality of first fall prevention members spaced apart from the fixing part upward and having one side open; and
Manhole safety comprising: a plurality of second fall prevention members extending from the fixing part to connect the plurality of first fall prevention members, and to be spaced apart from each other along the circumference of the first fall prevention member Device.
7. The method of claim 6,
The second fall prevention member,
a pair of first supports disposed at the ends of the first fall prevention member; and
A safety device for a manhole comprising a; a plurality of second supports spaced apart from each other by a predetermined distance along the circumference of the first fall prevention part between a pair of the first supports.
8. The method of claim 7,
The opening and closing part,
a door part disposed on one side of the first fall prevention member and forming a closed curve together with the first fall prevention member; and
A safety device for manholes comprising: a hinge portion extending from the door portion and rotatably connected to any one of the first supports.
9. The method of claim 8,
The lock is
a first locking member fixed to the other first support; and
and a second locking member rotatably connected to the door part, and interfering with the first locking part as it rotates to one side to limit rotation of the door part.

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