Safety structure for preventing falling into manhole

Abstract

The present invention relates to a manhole structure in which a fall prevention part is coupled to a support so as to prevent a pedestrian or a vehicle from falling and the support is fixed to a concrete structure so that the manhole structure is stably installed. The purpose of the present invention is to provide a safety structure for safely preventing falling into a manhole, wherein a support and a fall prevention part are fixed in a manner of inserting a key so that the installation thereof is easy and convenient, and the support is installed to be in close contact with concrete so as to prevent the support from being separated by external pressure.

Description

Fall prevention safety structure in manholes

[0001] The present invention relates to a fall prevention safety structure in a manhole, and more specifically, to a safety structure in which a fall prevention member is combined with a support to prevent a pedestrian or a vehicle from falling, and the support is fixed to a manhole structure to be stably installed.

[0002] In general, a manhole is a hole made from the road surface to allow people to enter and exit underground. Depending on its purpose, it is classified into water supply and sewage, rainwater, wastewater, and telecommunications, and can be commonly seen in various locations such as roads, sidewalks, and residential areas.

[0003] Typically, manhole covers are secured to supports when not in use, preventing vehicles or people from falling out. However, external impacts or high water pressure within the manhole can force the cover open, often resulting in pedestrians falling into the opening. Furthermore, accidents often occur when a manhole cover is opened for work, causing pedestrians to fall, unaware that work is in progress.

[0004] In the past, to prevent falling accidents, caution signs were installed around manholes, or after drilling in the narrow space of the manhole where the manhole cover is connected, screw taps were made, and brackets were fixed with bolts and welding, and then a net-shaped fall prevention safety device was installed.

[0005] The method of installing fall prevention safety devices has the problem of frequent complaints about traffic obstruction due to the complex work required for maintenance work and the additional hassle of having to perform separate fixing work to fix the fall prevention safety devices to the bracket.

[0006] In addition, when a worker needs to enter a manhole to work, there is the difficulty of having to separate the fall prevention safety device from the bracket, and the bracket protruding inside the manhole can cause a safety accident if the worker inside the manhole gets caught on the protruding bracket.

[0007] In addition, there is a problem that an accident may occur if a pedestrian steps on the fall prevention safety device and passes by, as the fall prevention safety device fixed to the bracket is not firmly supported.

[0008] [Prior Art Literature]

[0009] [Patent Document]

[0010] (Patent Document 0001) 1 Republic of Korea Patent Publication No. 10-2556064 ("Manhole Fall Prevention Safety Device and Fall Prevention Method", July 11, 2023)

[0011] The present invention has been devised to solve the above problems, and the purpose of the present invention is to provide a fall prevention safety structure in a manhole that is easy to install by inserting a key to fix a support and a fall prevention part.

[0012] In addition, it provides a safe fall prevention safety structure in a manhole that prevents the support from being dislodged by external pressure by installing the support in close contact with the concrete.

[0013] The fall prevention safety structure in a manhole of the present invention is characterized by including a cylindrical support member which is inserted and installed in a manhole structure and has an open upper surface and a lower surface; a fall prevention member which is mounted on the upper portion of the support member and is formed with a mesh structure to close part or all of the entrance of the manhole structure; and a manhole cover member which is mounted on the upper portion of the support member and opens and closes the entrance of the manhole structure.

[0014] In addition, the support is characterized in that it further includes a cylindrical housing having an open upper surface and a lower surface and a predetermined height, a mounting portion formed to extend outward from all or part of the upper edge of the housing by a predetermined width and having a lower surface in contact with the ground in an area surrounding the manhole structure, and a plurality of connecting portions formed to protrude by a predetermined height on the upper surface of the mounting portion.

[0015] In addition, the support is formed by extending downward from the lower end of the housing to a predetermined depth, and is characterized by including a plurality of vertical portions formed at predetermined intervals along the lower circumference direction of the housing, a horizontal portion in the form of a plate formed at the lower end of the vertical portion and formed to be perpendicular to the vertical portion, and a cylindrical coupling protrusion formed by protruding to a predetermined height on the upper surface of the horizontal portion.

[0016] In addition, the support further includes a fixing support formed with a plurality of holes penetrating the surface and fitted into the coupling protrusion, and the fixing support is characterized in that the support is fixed to the manhole structure by rotating in one direction with the coupling protrusion as a rotation axis and coming into contact with the concrete surface inside the manhole structure.

[0017] In addition, the fixing support is formed in an 'ㄱ' shape, and a first hole and a second hole are formed in the horizontal portion, and a vertical portion is formed as a support plate and comes into contact with the concrete surface, and the first hole is fitted into the connecting projection, and a bolt-shaped height adjustment part is inserted into the second hole, and the fixing support is characterized in that it moves up and down by rotation of the height adjustment part.

[0018] In addition, the support further includes a ring-shaped fixed key insertion portion formed on the inner wall surface of the housing at a predetermined interval along the circumference direction of the inner wall surface, and a fixed key is inserted into the fixed key insertion portion to prevent reverse rotation of the support plate.

[0019] In addition, the support includes a vertical portion in the form of a vertical bar formed to extend to a predetermined height, a horizontal portion in the form of a plate formed at the lower end of the vertical portion and formed to be perpendicular to the vertical portion, a cylindrical coupling protrusion formed to protrude to a predetermined height on the upper surface of the horizontal portion, and a coupling hook formed at the upper end of the vertical portion and formed at the front and / or rear of the vertical portion, wherein the coupling hook is characterized in that it is coupled to the housing.

[0020] In addition, the support further includes a fixing support formed with a plurality of holes penetrating the surface and fitted into the coupling protrusion, and the fixing support is characterized in that the support is fixed to the manhole structure by rotating in one direction with the coupling protrusion as a rotation axis and coming into contact with the concrete surface inside the manhole structure.

[0021] In addition, the fixing support is formed in an 'ㄱ' shape, and a first hole and a second hole are formed in the horizontal portion, and a vertical portion is formed as a support plate and comes into contact with the concrete surface, and the first hole is fitted into the connecting projection, and a bolt-shaped height adjustment part is inserted into the second hole, and the fixing support is characterized in that it moves up and down by rotation of the height adjustment part.

[0022] In addition, the vertical portion further includes a ring-shaped fixed key insertion portion formed in a support plate that extends laterally by a predetermined width from the stop of the vertical portion, and a fixed key is inserted into the fixed key insertion portion to prevent reverse rotation of the support plate.

[0023] The manhole fall prevention safety structure of the present invention, having the above configuration, is easy to install by inserting a key to fix the support and the fall prevention part, and is safe because the support is installed in close contact with the concrete, preventing the support from being detached due to external pressure.

[0024] Figure 1 is an exploded perspective view of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0025] Figure 2 is a perspective view of a support structure of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0026] Figure 3 is a flow chart of the support installation of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0027] Figure 4 is a perspective view of a fall prevention part of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0028] Figure 5 is a flow chart of the installation of a fall prevention unit of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0029] Figure 6 is an example of the installation of a manhole cover portion of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0030] Figure 7 is a perspective view of a support structure of a fall prevention safety structure in a manhole according to a modified example of one embodiment of the present invention.

[0031] Figure 8 is an exploded perspective view of a fall prevention safety structure in a manhole according to another modified example of one embodiment of the present invention.

[0032] Figure 9 is an example of installation of a fall prevention part of a fall prevention safety structure in a manhole according to another modified example of one embodiment of the present invention.

[0033] Explanation of key symbols in the drawing

[0034] 10 Manhole Structure 100, 500 Support

[0035] 110, 510 housing 111, 511 fixed key insert

[0036] 120, 520 mounting part 130, 530 connecting bolt

[0037] 140, 540 vertical section 141, 541 horizontal section

[0038] 142, 542 coupling protrusion 150, 550 fixing support

[0039] 151 Hole 1 152 Hole 2 153 Support plate

[0040] 160 Height adjustment part 200 Fall prevention part 210 Safety net

[0041] 220 First connecting bolt through hole 300 Manhole cover

[0042] 310 Second coupling bolt through hole 320 Combination nut 400 Fixed key

[0043] A fall prevention safety structure in a manhole according to the present invention is characterized by including: a cylindrical support member inserted and installed in a manhole structure and having an open upper surface and a lower surface; a fall prevention member mounted on the upper portion of the support member and formed with a mesh structure to close part or all of the entrance of the manhole structure; and a manhole cover member mounted on the upper portion of the support member to open and close the entrance of the manhole structure.

[0044] Hereinafter, an embodiment of the present invention as described above will be described in detail with reference to the drawings.

[0045] Fig. 1 illustrates an exploded perspective view of a fall prevention safety structure in a manhole according to one embodiment of the present invention. As illustrated in Fig. 1, the fall prevention safety structure of the present invention largely includes a support (100), a fall prevention member (200), and a manhole cover member (300).

[0046] The support (100) is formed in a cylindrical shape of a predetermined height, with the upper and lower surfaces open, and is installed by being inserted into the upper part of the manhole structure, i.e., a hole in the ground, to a predetermined depth. The upper part of the support (100) is formed with a mounting portion (120) that extends outward by a predetermined width in whole or in part along the edge, and the lower surface of the mounting portion (120) is formed to be in contact with the ground. The support (100) can be installed without falling into the manhole by the mounting portion (120).

[0047] The fall prevention device (200) is installed in combination with the support (100), and a mesh-shaped safety net (210) is formed to prevent the wheels of pedestrians or vehicles from falling into the manhole.

[0048] The manhole cover part (300) is installed to open and close the manhole. When work is required, the manhole cover part (300) is moved to open the manhole, and when work is not in progress, the manhole cover part (300) is fitted into the upper part of the manhole to close the manhole.

[0049] FIG. 2 is a perspective view of a support of a fall prevention safety structure in a manhole according to one embodiment of the present invention. As illustrated in FIG. 2, the support (100) of the present invention includes a cylindrical housing (110) formed with an open upper surface and a lower surface, a mounting portion (120) formed by extending partly or entirely from the outer side of the upper edge of the housing (110) in a horizontal direction of a predetermined width, a plurality of connecting bolts (130) formed at a predetermined interval along the circumferential direction on the upper surface of the mounting portion (120) and formed by protruding a predetermined height, a vertical portion (140) formed by extending downward from the housing by a predetermined length, and a horizontal portion (141) formed at the end of the vertical portion (140) and being horizontal to the ground.

[0050] The horizontal portion (141) is formed with a width wider than that of the vertical portion (140), and a cylindrical coupling protrusion (142) having a predetermined height is formed by protruding from the upper surface of the horizontal portion (141). A fixing support (150) for fixing the support (100) to the manhole structure (10) is fitted into the coupling protrusion (142), which will be described later with reference to FIG. 3.

[0051] On the inner surface of the housing (110), a ring-shaped fixed key insertion portion (111) is formed at a predetermined interval along the circumference. The fixed key insertion portion (111) is provided to insert a fixed key to prevent reverse rotation of the fixed support (150), and is formed on the inner surface of the housing (110), but is preferably formed around an imaginary line extending vertically from the side end of the horizontal portion (141).

[0052] Referring to FIG. 3, a method of installing the support (100) of the present invention to a manhole structure (10) will be described in detail.

[0053] Fig. 3 illustrates a flow chart for installing a support for a fall prevention safety structure in a manhole according to one embodiment of the present invention. First, as illustrated in Fig. 3a, a support (100) is fitted into a manhole structure (10) having a hole of a predetermined diameter formed on its upper surface. At this time, a housing (110) is inserted into the hole of the manhole structure (10), and the lower surface of the mounting portion (120) is installed so as to be in contact with the ground, thereby preventing the support (100) from falling into the manhole structure (10).

[0054] Next, as illustrated in FIG. 3b, an 'ㄱ' shaped fixing support (150) is fitted into the engaging protrusion (142) of the horizontal portion (141). A first hole (151) in the form of a through hole for engaging with the engaging protrusion (142) is formed in the horizontal portion of the fixing support (150) to be engaged with the bolt, and a second hole (152) is formed to be engaged with the bolt later. When the engaging protrusion (142) penetrates the first hole (151) and the engaging protrusion (142) and the fixing support (150) are engaged, as illustrated in FIG. 3c, the supporting plate (153), which is the vertical portion of the fixing support (150), is held and rotated clockwise so that the end of the supporting plate (153) faces outward.

[0055] Next, as illustrated in FIG. 3d, a bolt-shaped height adjustment part (160) is inserted into the second hole (152), and the height adjustment part (160) is rotated in one direction to raise the fixing support (150). When the fixing support (150) is raised by the rotation of the height adjustment part (160), the upper surface of the support plate (153) comes into contact with the surface where the step is formed in the manhole structure (10), and thus the support (100) is fixedly installed in the manhole structure (10).

[0056] Lastly, as shown in Fig. 3e, a fixed key (400) in the shape of the letter 'ㄱ' or 'T' can be inserted vertically into the fixed key insertion portion (111) to prevent the fixed support (150) from rotating counterclockwise due to external force.

[0057] FIG. 4 is a perspective view of a fall prevention part of a fall prevention safety structure in a manhole according to one embodiment of the present invention, and FIG. 5 is a flowchart illustrating an installation sequence of a fall prevention part of a fall prevention safety structure in a manhole according to one embodiment of the present invention.

[0058] As shown in FIGS. 4 and 5, the fall prevention unit (200) of the present invention includes a safety net (210) formed in a mesh shape, and a plurality of first coupling bolt through holes (220) in the form of holes are formed in the safety net (210). It is preferable that the first coupling bolt through holes (220) are formed at positions corresponding to the coupling bolts (130) formed in the support (100).

[0059] When the fall prevention unit (200) is coupled to the support (100), the first coupling bolt penetration hole (220) is formed in a form in which the coupling bolt (130) penetrates, so that the fall prevention unit (200) can be coupled without being detached from the support (100).

[0060] Since the support (100) and the fall prevention part (200) are connected so as not to be separated by the connection bolt (130) and the first connection bolt penetration hole (220), when the manhole cover part (300) is open but work is not being done inside the manhole, the fall prevention part (200) can prevent pedestrian safety accidents or wheel detachment accidents of a means of transportation, and when work is being done inside the manhole, the fall prevention part (200) can be lifted to easily open the manhole.

[0061] Fig. 6 illustrates an example of installing a manhole cover portion of a fall prevention safety structure in a manhole according to one embodiment of the present invention. As illustrated in Fig. 6a, the manhole cover portion (300) is coupled to a structure in which a support member (100) and a fall prevention member (200) are coupled. At this time, it is preferable that the diameter of the manhole cover portion (300) be the same as or a predetermined length longer than the diameter of the mounting member (120) of the support member (100).

[0062] When the manhole cover part (300) is combined with the structure in which the support (100) and the fall prevention part (200) are combined, as illustrated in Fig. 6b, the coupling bolts (130) are inserted into a plurality of second coupling bolt insertion holes (310) formed by penetrating the manhole cover part (300). After inserting the coupling nut (320) into the upper side of the second coupling bolt insertion hole (310), and then rotating it in one direction, the coupling bolt (230) and the coupling nut (320) are combined, thereby completing the fall prevention safety structure of the present invention.

[0063] Fig. 7 is a perspective view of a support of a fall prevention safety structure in a manhole according to another embodiment of the present invention. As shown in Figs. 7a and 7b, the support (500) according to another embodiment of the present invention includes a cylindrical housing (510) formed with an upper surface and a lower surface open, a mounting portion (520) formed by extending a portion of a predetermined width in a horizontal direction from the outer side of the upper edge of the housing (510), and a plurality of connecting bolts (530) formed on the upper surface of the mounting portion (520) and formed to protrude a predetermined height.

[0064] In the example described above with reference to FIG. 2, the vertical portion (140), the horizontal portion (141), and the coupling protrusion (142) are formed integrally with the housing (110), but in another embodiment illustrated in FIG. 7, the vertical portion (540), the horizontal portion (541), and the coupling protrusion (542) are coupled in a form in which they are mounted on the housing (510) by a coupling hook (543).

[0065] To explain in more detail, it includes a vertical portion (540) formed by extending in the vertical direction and a horizontal portion (541) formed at the lower end of the vertical portion (540) and formed to be horizontal to the ground, and a cylindrical connecting protrusion (542) having a predetermined height is formed by protruding on the upper surface of the horizontal portion (541).

[0066] A coupling hook (543) is formed at the front and / or rear at the top of the vertical section (540), and a fixed key insertion portion (511) is formed on a support plate extending laterally by a predetermined width from the end of the vertical section (540).

[0067] Since the vertical portion (540), the horizontal portion (541), the coupling protrusion (542), and the fixed key insertion portion (511) are formed to be detachable from the housing (510) by the coupling hook (543), the fixing support (550) can be selectively coupled to the position where the inner step surface of the manhole structure (10) is formed. In addition, since the coupling hooks (543) are formed in the front and rear, i.e., in both directions, the housing (510) can be coupled to the front hook, or the housing (510) can be coupled to the rear hook, there is an effect that it can correspond to the shape of the manhole structure (10).

[0068] The method of combining the fixed support and the fixed key and the method of combining the fall prevention part and the manhole cover part are the same as described above with reference to FIGS. 3 to 6.

[0069] Fig. 8 illustrates an exploded perspective view of a fall prevention safety structure inside a manhole according to another modified example of one embodiment of the present invention. As illustrated in Fig. 8, the fall prevention safety structure inside a manhole according to a modified example of one embodiment of the present invention differs from the embodiment described above with reference to Figs. 1 to 7 in that the support (1000) and the fall prevention member (2000) are bracket-joined.

[0070] The support (1000) includes a housing (1100) and a mounting portion (1200) formed by extending a predetermined width from the upper edge of the housing (1100), and a plurality of first brackets (1300) having holes penetrating the side are formed at predetermined intervals in the mounting portion (1200).

[0071] In addition, a second bracket (2200) is formed in the fall prevention part (2000) with holes formed at predetermined intervals along the perimeter direction of the safety net (2100) and penetrating the side surface, and a plurality of coupling bolts (2300) are formed on the surface of the safety net (2100), and the plurality of coupling bolts (2300) are coupled to the coupling nut (3200) by penetrating the holes (3100) formed in the manhole cover part (3000).

[0072] Fig. 9 illustrates an example of installing a fall prevention unit of a fall prevention safety structure in a manhole according to another modified example of one embodiment of the present invention. As illustrated in Fig. 9, the safety net (2100) of the fall prevention unit (2000) is formed to have a diameter similar to that of the housing (1100) of the support (1000), and the second bracket (2200) formed on the edge of the safety net (2100) is connected to be mounted on the mounting portion (1200) of the support (1000).

[0073] Next, the fall prevention member (2000) is rotated so that the first bracket (1300) and the second bracket (2200) come into contact, and then the fixed key is sequentially inserted through the holes formed on the sides of the first bracket (1300) and the second bracket (2200). It is preferable that the fixed key be in the shape of the letter 'ㄱ' or 'T'.

[0074] Although not shown in the drawing, the fixed key can be fixed using a fixing means such as an R pin or hinge pin to prevent the fixed key from coming off after being inserted into the hole formed in the first bracket (1300) and the second bracket (2200).

[0075] Since the support (1000) and the fall prevention part (2000) are connected by a fixed key, when the manhole cover part (3000) is open but work is not being done inside the manhole, the fall prevention part (2000) can prevent pedestrian safety accidents or wheel detachment accidents of a means of transportation, and when work is being done inside the manhole, the manhole can be easily opened by removing the fixed key.

[0076] Referring to FIGS. 8 and 9, the fall prevention safety structure in the manhole described above, and also the method of installing the fixing support to the support and the method of combining the manhole cover are the same as the above-described example, and the mounting portion (1200) may be formed only in a part as in FIG. 7, so that the vertical portion, horizontal portion, combining projection, and fixing key insertion portion can be formed to be detachable by a hook structure.

[0077] The technical concept of the present invention should not be construed solely based on the above-described embodiments. The scope of application is diverse, and various modifications and variations are possible within the scope of those skilled in the art without departing from the spirit of the invention as claimed in the claims. Therefore, such improvements and modifications, as long as they are obvious to those skilled in the art, fall within the scope of protection of the present invention.

[0078] As described above, the fall prevention safety structure in a manhole according to the present invention is easy to install by inserting a key to fix the support and the fall prevention part, and the support is installed in close contact with the concrete, thereby preventing the support from being detached due to external pressure, thereby improving safety, and is therefore an invention with very high industrial applicability.

Claims

1. A cylindrical support with open upper and lower surfaces, installed and inserted into a manhole structure; A fall prevention member mounted on the upper part of the support and formed with a mesh structure to close part or all of the entrance of the manhole structure; and A manhole cover part installed on the upper part of the above support part to open and close the entrance of the manhole structure; A fall prevention safety structure in a manhole, characterized by including a .

2. In paragraph 1, the support, A cylindrical housing having an open upper and lower surface and a predetermined height. A mounting portion formed by extending outwardly from all or part of the upper edge of the housing by a predetermined width and having a lower surface in contact with the ground in the area surrounding the manhole structure; A plurality of connecting parts formed by protruding to a predetermined height on the upper surface of the above-mentioned mounting part A fall prevention safety structure in a manhole, characterized by further including:

3. In the second paragraph, the support, A vertical section formed by extending downward from the bottom of the housing to a predetermined depth and formed in multiple places at predetermined intervals along the lower circumference of the housing; A horizontal portion in the shape of a plate formed at the bottom of the vertical portion and formed to be perpendicular to the vertical portion; and A cylindrical joint projection formed by protruding to a predetermined height on the upper surface of the above horizontal section A fall prevention safety structure in a manhole, characterized by including a .

4. In the third paragraph, the support, A plurality of holes penetrating the surface are formed, and a fixing support member is further included that is fitted into the connecting projection. A fall prevention safety structure inside a manhole, characterized in that the above-mentioned fixed support is rotated in one direction about the above-mentioned coupling projection as a rotation axis and is fixed to the manhole structure by coming into contact with the concrete surface inside the manhole structure.

5. In the fourth paragraph, the fixed support, It is formed in the shape of the letter 'ㄱ', with the first hole and the second hole formed in the horizontal part, and the vertical part formed as a support plate and in contact with the concrete surface. A fall prevention safety structure in a manhole, characterized in that the first hole is fitted into the coupling projection, a bolt-shaped height adjustment part is inserted into the second hole, and the fixing support moves up and down by rotation of the height adjustment part.

6. In paragraph 5, the support, It further includes a ring-shaped fixed key insert formed on the inner wall surface of the housing, and formed at a predetermined interval along the circumferential direction of the inner wall surface. A fall prevention safety structure inside a manhole, characterized in that a fixed key is inserted into the fixed key insertion portion to prevent reverse rotation of the support plate.

7. In the second paragraph, the support, A vertical bar-shaped part formed by extending to a predetermined height, A horizontal portion in the shape of a plate formed at the bottom of the vertical portion and formed to be perpendicular to the vertical portion; A cylindrical joint projection formed by protruding to a predetermined height on the upper surface of the above horizontal portion, and A fall prevention safety structure in a manhole, characterized in that it is formed on the upper end of the vertical portion, and includes a coupling hook formed at the front and / or rear of the vertical portion, and the coupling hook is coupled to the housing.

8. In paragraph 7, the support, A plurality of holes penetrating the surface are formed, and a fixing support member is further included that is fitted into the connecting projection. A fall prevention safety structure inside a manhole, characterized in that the above-mentioned fixed support is rotated in one direction about the above-mentioned coupling projection as a rotation axis and is fixed to the manhole structure by coming into contact with the concrete surface inside the manhole structure.

9. In the 8th paragraph, the fixed support, It is formed in the shape of the letter 'ㄱ', with the first hole and the second hole formed in the horizontal part, and the vertical part formed as a support plate and in contact with the concrete surface. A fall prevention safety structure in a manhole, characterized in that the first hole is fitted into the coupling projection, a bolt-shaped height adjustment part is inserted into the second hole, and the fixing support moves up and down by rotation of the height adjustment part.

10. In paragraph 9, the vertical section, It further includes a ring-shaped fixed key insertion part formed on a support plate that extends laterally by a predetermined width from the stop of the above vertical part, A fall prevention safety structure inside a manhole, characterized in that a fixed key is inserted into the fixed key insertion portion to prevent reverse rotation of the support plate.

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