OSC modular movable rigid protective barrier with enhanced mounting stability

Abstract

The present invention relates to an OSC modular movable rigid protective barrier with enhanced mounting stability, comprising: a plurality of protective blocks of which at least two are arranged in the forward-backward longitudinal direction; pile accommodation structures respectively embedded and coupled in a plurality of mounting recesses recessed at predetermined intervals on a surface, to which the plurality of protective blocks are to be mounted, and each having, therein, a first pile insertion recess opened upward; and pile structures each provided in a cylindrical shape so as to be insertively provided in the first pile mounting recess provided in the pile accommodation structure such that a portion of the upper side thereof protrudes from the ground, wherein the protective block includes: a protective block body which is provided in a tapered shape in which the horizontal width thereof narrows toward the upper side, and which has at least one second pile insertion recess recessed upward on the lower surface thereof in the forward-backward longitudinal direction such that a portion, which protrudes from the ground, of the pile structure insertively provided in the first pile insertion recess is inserted thereinto; and a reinforcing structure which is buried in the protective block body, and which includes a plurality of first reinforcing parts provided as an "inverted-U" structure using a reinforcing bar and disposed to be spaced apart from each other in the forward-backward direction, and second reinforcing parts which are provided as a "horizontal-line" structure using a reinforcing bar, and which are spaced from each other in the vertical direction and orthogonally connected to both the left and right sides of the plurality of first reinforcing parts so as to form a latticed reinforcing structure on both the left and right sides inside the protective block body.

Description

OSC modular movable rigid protective fence with enhanced installation stability

[0001] The present invention relates to an OSC modular movable rigid protective fence with enhanced installation stability.

[0002] A barrier is a facility that prevents vehicles from leaving the road and minimizes damage in the event of a vehicle collision. Depending on the installation location, it is classified into roadside, divider, sidewalk, and bridge use, and depending on the structural characteristics, it is divided into flexible barriers and rigid barriers.

[0003] The main function of a flexible barrier is to absorb impact energy while undergoing a certain range of structural deformation in the event of a vehicle collision. Representative examples include guardrails, guard pipes, and guard cables. On the other hand, a rigid barrier is a structure that focuses on minimizing deformation of the structure itself to guide the vehicle back to its path rather than absorbing impact. It is generally formed as an integral concrete structure.

[0004] In particular, in the case of mobile rigid barriers that are installed for a limited period of time, such as in construction areas or for road maintenance purposes, and then removed, a method that can be installed simply without excavating the road is preferred, but the existing method of fixing the structure to the installation surface only by the weight of the structure itself is vulnerable to high-speed collisions or vibrations, and there is a constant risk of detachment, overturning, and rotation.

[0005] Accordingly, there is a growing need for an installation structure that can effectively secure stability without foundation work, especially a mechanical joint method or ground insertion structure that allows for repeated installation and dismantling.

[0006] In addition, the movable safety fence is composed of several block units and is arranged continuously. In addition to ensuring stability of the connection between each block, a structure is required to control each individual block from rotating or being pushed out from the installation surface.

[0007] To achieve this, applying a pile-shaped support structure to the bottom of the block or the installation surface, or introducing an insertion groove-pile combination structure, are being considered effective solutions. These technical considerations serve as essential prerequisites for meeting the requirements of ease of installation, ease of repair and reinstallation, and stability in the event of a collision.

[0008] In this regard, a prior art document for providing a soundproof fence foundation structure that minimizes obstruction of traffic when installed on the roadside, enables rapid construction, and allows the concrete structure for installing a soundproof fence to be constructed with minimal size, time, and cost is disclosed in Korean Patent Publication No. 10-1186563 entitled “Soundproof fence foundation structure using precast concrete pile foundation and construction method thereof” (hereinafter referred to as “prior art”).

[0009] However, existing concrete material protective fences, including prior art ones, have been used by burying separate metal materials or reinforcing members inside the concrete for the purpose of improving protective performance or structural strength. However, since such reinforcement has been applied indiscriminately without comprehensively considering the shape, arrangement, and material characteristics related to structural performance, there has been a problem in which the performance improvement effect is minimal or the shock absorption performance is reduced due to fracture or scattering.

[0010] In addition, existing concrete barriers, including conventional technologies, often rely on the weight of the structure itself or are simply fastened between blocks, assuming that they can be easily installed on roads. Therefore, there is a constant risk that the structure may detach, rotate, or tip over in the event of a collision with a high-speed vehicle, and repeated installations may result in a decrease in the structure's grip and limitations in maintaining installation stability.

[0011] The present invention was created to solve the above problems, and the purpose of the present invention is as follows.

[0012] First, the purpose is to provide a movable rigid safety fence that can prevent vehicle departure and induce stable vehicle behavior after a collision by securing strength performance and deformation performance in the event of a collision through the specification of the structure and specifications for each component.

[0013] Second, the purpose is to provide a protective fence with improved safety in terms of the degree of scattering and the distance of discharge of scattering products by optimizing the structural joint form and the arrangement conditions of components to minimize scattering due to breakage or detachment of components upon impact.

[0014] Third, by including a pile structure that is inserted and fixed into the lower part of the protective block and a pile receiving structure that receives the pile structure, the protective fence can be stably fixed to the installation surface without foundation work, and the protective fence has improved installation stability that can effectively suppress the occurrence of the structure falling, rotating, or sliding in the event of a collision.

[0015] Fourth, the purpose is to provide a highly functional, mobile protective structure that is easy to repeatedly install and maintain even under various field conditions, such as construction areas and temporary installation areas, by making it easy to install, dismantle, and reuse the protective fence through the file insertion and separation structure.

[0016] In order to achieve the above object, the OSC modular movable rigid protective fence with enhanced installation stability of the present invention comprises: a plurality of protective blocks, at least two of which are arranged along the longitudinal direction of the front and rear; a pile receiving structure having a first pile insertion groove that is formed by being buried and connected in each of a plurality of installation grooves formed at predetermined intervals in the installation surfaces of the plurality of protective blocks at predetermined intervals and having an upwardly open inner surface; and a pile structure that is provided in a tubular shape and is inserted and installed in the first pile insertion groove provided in the pile receiving structure so that an upper portion thereof protrudes from the ground; wherein the protective block is provided in a tapered shape in which the width from left to right narrows upwardly, and has at least one second pile insertion groove on a lower surface thereof that is recessed upward along the longitudinal direction of the front and rear and into which a portion of the pile structure that is inserted and installed in the first pile insertion groove is inserted, the protective block body having a second pile insertion groove that is inserted into the first pile insertion groove and protrudes from the ground. And it includes a reinforcement structure including a plurality of first reinforcement parts which are installed inside the body of the protective block and are provided with a '┌┐' structure using steel bars and are spaced apart from each other in the front-back direction; and a second reinforcement part which is provided with a '-' structure using steel bars and is connected to the left and right sides of the plurality of first reinforcement parts in a vertical direction orthogonal to each other to form a grid-like reinforcement structure on both left and right sides inside the body of the protective block.

[0017] Here, the protective block body is provided with a size ratio of a front-back reference length (D), a vertical reference height (H), a left-right reference bottom width (W1), and a left-right reference top width (W2) of 3000 mm (D): 1270 mm (H): 550 mm to 615 mm (W1): 180 mm to 250 mm (W2), and the diameter of the reinforcing bar of the first reinforcing part and the diameter of the reinforcing bar of the second reinforcing part are provided with a size ratio of 10 mm to 16 mm.

[0018] In addition, the first reinforcing part includes an upper part of a '-' structure arranged on the upper part based on a '┌┐' structure using steel bars; and a column part that is connected by being inclined in a ' / ' structure from the left end of the upper part and is connected by being inclined in a '\' structure from the right end of the upper part to be symmetrical on the left and right; and the first reinforcing part is provided with a size ratio of a left-right reference length (L1) of the upper part, a vertical reference inclined length (L2) of the column part, and a left-right reference spaced length (L3) of the lower ends of the column part in the left and right directions, which is 145 mm to 150 mm (L1): 1170 mm to 1180 mm (L2): 520 mm to 425 mm (L3).

[0019] In addition, the lattice-shaped reinforcing structure formed on both left and right sides of the reinforcing structure is provided with a plurality of square frames forming a plurality of rows and columns through orthogonal cross-connections of the first reinforcing portion and the first reinforcing portion, and among the plurality of square frames, the square frames of the front row and the rear row based on the front-to-back direction are provided with a front-to-back length (D3) of 460 mm to 465 mm, the square frames of the remaining rows of the plurality of square frames are provided with a front-to-back length (D2) of 580 mm to 620 mm, and the plurality of square frames are provided with a tilted height (D4) based on the vertical direction of 290 mm to 310 mm.

[0020] And the protective block further includes a plurality of first reinforcing members, which are provided in a '-' structure using steel bars and are buried so as to be arranged at the left-right center of the protective block body on at least one height of each of the front and rear sides of the protective block body; and a second reinforcing member, which is provided in a '-' structure using steel bars and is buried so as to be arranged at the left-right center of the protective block body from the front to the rear of the protective block body on the upper side of the protective block body; and the diameter of the reinforcing bars of the plurality of first reinforcing members and the second reinforcing member is provided to be 26 mm to 32 mm.

[0021] In addition, the protective block further includes a first metal wire member that is wound in a spring shape around the outer side of the plurality of first reinforcing members so that each of the plurality of first reinforcing members is placed at the inner center; the diameter of the first metal wire member is set to be 4 mm to 5 mm, and the diameter of the spring shape formed by the first metal wire member winding around the outer side of each of the plurality of first reinforcing members is set to be 190 mm to 210 mm.

[0022] In addition, the protective block further includes a second metal wire member that is wound in a spring shape around the outer side of the second reinforcing member so that the second reinforcing member is placed in the inner center; the diameter of the second metal wire member is set to be 4 mm to 5 mm, and the diameter of the spring shape formed by the second metal wire member winding around the outer side of each of the second reinforcing members is set to be 190 mm to 210 mm.

[0023] And the mobile rigid protective fence with the self-generation and light-emitting functions further includes a connecting device that is connected at one end to one protective block at the front end among the plurality of protective blocks arranged adjacent to each other in the front and rear, and at the other end to the other protective block at the rear end; wherein the protective block body is provided with a pair of connecting device installation grooves that are open in the left-right direction on both left and right sides of the front and rear sides that are symmetrical in terms of the height of the installation of the second reinforcing member, and the protective block is connected to the front and rear ends of the second reinforcing member, respectively, and has a pair of second coupler parts that are connected at opposite sides of the connection portions and are connected to the connecting device installation grooves; And a second fastening member including a pair of second eyebolt parts which are installed so that the connecting bolt insertion holes provided in the center are exposed in the left and right directions within the connecting device installation groove, each of which is connected to each of the second coupler parts, wherein the connecting device comprises a plurality of connecting bodies provided in a '┌┐' structure and arranged in front and rear of a position where the pair of connecting device installation grooves are provided on the upper outer side of the protective block body; an upper plate structure arranged so that one end covers the upper surface of the connecting body arranged at the rear end of one of the front-end side protective blocks among the plurality of protective blocks arranged adjacent to each other in the front and rear, and the other end covers the upper surface of the connecting body arranged at the front end of the other of the rear-end side protective block; a fastening plate structure arranged so that one end covers the lower ends of both left and right sides of the connecting body arranged at the rear end of one of the front-end side protective blocks among the plurality of protective blocks arranged adjacent to each other in the front and rear, and the other end covers the lower ends of both left and right sides of the connecting body arranged at the front end of the other of the rear-end side protective block; A first fastening member is provided with front and rear end portions of the upper plate structure from the outside, a first connecting bolt portion penetrating the upper surface of the connecting body, and a first nut portion fastened to both ends of the connecting bolt portion; and a second fastening member is provided with a second connecting bolt portion penetrating the front and rear end portions of the connecting plate structure from the outside, the left and right ends of the connecting body, the connecting device installation groove, and the connecting bolt insertion hole of the second eye bolt portion, and a second nut portion fastened to both ends of the connecting bolt portion.

[0024] According to the present invention, the following effects are achieved.

[0025] First, the characteristics related to strength and protective performance can be improved through the reinforcing structure, first reinforcing member and second reinforcing member forming the protective block and grid-type reinforcing structure having a specific structure, material and specification.

[0026] Second, the performance level, such as the degree of scattering and the emission distance of scattering products, can be sufficiently alleviated through the reinforcing structure, the first reinforcing member, and the second reinforcing member that form the protective block and the grid-type reinforcing structure with specific structure, material, and specifications, in relation to the scattering of the component parts.

[0027] Third, by using the first metal wire member and the second metal wire member with specific installation structure, material, and specifications, not only can the characteristics related to strength and protective performance be improved, but furthermore, the degree of occurrence of flying products can be ultimately reduced and the emission of flying products can be prevented as much as possible.

[0028] Fourth, through the combination of the second pile insertion groove formed at the bottom of the protective block and the pile receiving structure and insertion pile structure embedded in the installation surface, the protective block is mechanically connected to the ground to secure structural stability, so that the structure can be effectively prevented from being detached, overturned, or rotated due to impact without separate foundation work.

[0029] Fifth, the installation method using a file structure is easy to repeatedly install and dismantle depending on the field conditions, and the detachable structure of each component allows for excellent reinstallation and mobility, so it can be effectively utilized in various road environments such as temporary protection areas or maintenance work areas.

[0030] Figure 1 is a perspective view showing the configuration of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0031] Figure 2 is a perspective view showing the configuration and fastening form of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0032] Figure 3 is a side view showing the detailed configuration and structure of the protective block of the OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0033] Figure 4 is a front view showing the protective block structure of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0034] Figure 5 is a cross-sectional view showing the structure of a protective block of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0035] Figure 6 is a side view showing the connection form between adjacent protective blocks of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0036] Figure 7 is a plan view showing the installation structure of the first fastening member within the protective block of the OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0037] Figure 8 is a side view showing the detailed configuration and structure of a protective block of another embodiment of an OSC modular movable rigid protective fence with enhanced installation stability according to the present invention.

[0038] A preferred embodiment of the present invention will be described in more detail with reference to the attached drawings, but already well-known technical parts will be omitted or compressed for the sake of brevity.

[0039] 1. Description of the composition and structure of the OSC modular movable rigid protective fence with enhanced installation stability.

[0040] Referring to FIGS. 1 and 2, the OSC modular movable rigid protective fence (10) with enhanced installation stability of the present invention is a rigid protective structure that can be repeatedly installed and designed to be stably fixed to the ground without separate foundation work and to prevent detachment or overturning in the event of a collision, and for this purpose, it is configured to include a plurality of protective blocks (100) corresponding to protective units arranged in the longitudinal direction of the front and rear; a connecting device (200); a steel bar member (300); a pile receiving structure (400); and a pile structure (500); so that the protective units arranged in the longitudinal direction of the front and rear are connected, thereby enabling the construction of a long protective structure.

[0041] In this regard, the overall structure of the present invention is designed to enable pre-fabrication in modular units, taking into account the OSC (Off-Site Construction) method. The protective block (100), pile receiving structure (400), pile structure (500), connecting device (200), steel bar member (300), etc. are each composed of independent standardized parts, and these are precisely manufactured in advance at an external factory, then transported to the site and assembled for construction.

[0042] This OSC-based construction method minimizes on-site processing and drastically shortens installation time by manufacturing precisely according to pre-designed specifications such as the location of joints between members, fastening tolerances, and insertion groove depth.

[0043] In particular, the pile receiving structure (400) and pile structure (500) are structures that are directly embedded in the ground and secure the protective blocks in both vertical and horizontal directions, and are key modules that ensure the installation stability of the present invention. This insertion-type fixing method can be applied in the same manner regardless of ground conditions or road surface structure, and can maintain consistent construction quality with simple insertion and fastening between modularized members.

[0044] Furthermore, the present invention is designed as a mobile structure capable of repeated installation and disassembly, allowing flexible module placement, removal, and relocation in diverse environments, such as road construction, maintenance work, and temporary closure of construction areas. This directly correlates to the construction flexibility of the OSC method, allowing for the reuse of identical components or individual unit maintenance, thereby reducing long-term operating costs and maximizing construction efficiency.

[0045] As a result, the present invention is not limited to simple protective performance, but is a high-function protective system optimized for the OSC construction paradigm of factory prefabrication, easy on-site assembly, and repeatable operation, and can realize superior effects in terms of shortened construction period, quality stability, and installation safety compared to existing on-site cast or integral structures.

[0046] The protective block (100) is a protective unit made of precast concrete to have a structure as shown in FIG. 3, and includes a protective block body (110), a reinforcing structure (120), a first reinforcing member (130), a second reinforcing member (150), a first fastening member (140), and a second fastening member (160).

[0047] Here, the protective block body (110) is a concrete segment forming the basic structure of the protective block (100), and has a central structure provided in a tapered shape in which the width from left to right becomes narrower as it goes upward.

[0048] Specifically, the protective block body (110) is provided with a size ratio of the front-back direction reference length (D), the vertical direction reference height (H), the left-right direction reference bottom width (W1), and the left-right direction reference top width (W2) as shown in FIGS. 3 and 4, which is 3000 mm (D): 1270 mm (H): 550 mm to 615 mm (W1): 180 mm to 250 mm (W2).

[0049] Most preferably, the protective block body (110) can provide optimal protective performance when it has a front-back standard length (D) of 3000 mm, a vertical standard height (H) of 1270 mm, a left-right standard bottom width (W1) of 610 mm, and a left-right standard top width (W2) of 200 mm.

[0050] In addition, the protective block body (110) is composed of a first body part (111) that corresponds to the lower region as shown in FIG. 4 and extends upwards with the same width from the left-right reference bottom width (W1), a second body part (112) that corresponds to the middle region and extends upwards in a tapered shape with a width that gradually narrows from the top of the first body part (111) to the level of the left-right reference bottom width (W1) and forms an integral part, and a third body part (113) that corresponds to the upper region and extends upwards in a tapered shape with a width that further narrows from the top of the second body part (112) and forms an integral part.

[0051] Specifically, based on 1270 mm corresponding to the vertical reference height (H) of the protective block body (110), the first body part (111) corresponds to an area up to a height (Ha) of 135 mm to 140 mm (most preferably 138 mm), the second body part (112) corresponds to an area having a height (Hb) of 160 mm to 170 mm from the top of the first body part (111) (most preferably 166 mm), and the third body part (113) corresponds to an area having a height (Hc) of 960 mm to 970 mm from the top of the second body part (112) (most preferably 966 mm).

[0052] In addition, the second body part (112) is formed so that the part connected to the upper end of the first body part (111) at the lower end has a curvature of R150 on the outside, and the part connected to the lower end of the third body part (133) at the upper end has a curvature of R260 on the inside.

[0053] In addition, the difference between the lower width and the upper width of the second body part (112), that is, the reduced width size, is 75 mm, and the difference between the lower width and the upper width of the third body part (113), that is, the reduced width size, is 113 mm.

[0054] The features regarding the structure and specifications of the protective block body (110) correspond to specific features for providing a high level of protective performance through fusion with other configurations to be described later.

[0055] And, in order to achieve connection between a plurality of protective blocks (100) arranged adjacently in the front and rear using a steel bar member (300), a connection member installation groove (110H) is provided on the inside (towards the bottom in the case of the front end, towards the front end in the case of the rear end) at the front and rear ends of the protective block body (110), as shown in FIGS. 2, 4, and 7.

[0056] In addition, as shown in Fig. 4, a pair of connecting device installation grooves (115H) open in the left-right direction are provided to connect a plurality of protective blocks (100) arranged adjacent to each other in the front and rear, using connecting devices (200) on both sides of the front and rear left and right sides symmetrical in terms of the height of the second reinforcing member (150) to be described later of the protective block body (110) to achieve connection.

[0057] Next, the reinforcing structure (120) is a structure made of steel bars and is embedded with a specific structure inside the protective block body (110) to provide structural reinforcement. The level of structural reinforcement can be greatly improved through the specific structure constructed through the first reinforcing part (121) and the second reinforcing part (122).

[0058] First, the first reinforcing member (121) is provided in a '┌┐' structure using reinforcing bars having a reinforcing bar diameter of 10 mm to 16 mm (most preferably a standard of D13), and is a plurality of reinforcing bar structures arranged to be spaced apart from each other in the front-rear direction, and is laid out as shown in FIGS. 3 and 5.

[0059] Specifically, the first reinforcing member (121) is formed of an upper part (121a) of a '-' structure placed on the upper part based on a '┌┐' structure using steel bars as illustrated in FIG. 3, and a pillar part (121b) that is connected by being inclined in a ' / ' structure from the left end of the upper part (121a) and is connected by being inclined in a '\' structure from the right end of the upper part to be symmetrical on the left and right, so that it most preferably has a structure of an isosceles trapezoid with the bottom side excluded as shown in FIG. 5.

[0060] Here, the first reinforcing member (121) is provided with a size ratio of the left-right reference length (L1) of the upper portion (121a), the up-and-down reference inclined length (L2) of the column portion (121b), and the left-and-right reference spaced length (L3) of the lower ends of the column portion (121b) as shown in FIG. 5, which is 145 mm to 150 mm (L1): 1170 mm to 1180 mm (L2): 520 mm to 425 mm (L3).

[0061] Most preferably, the first reinforcing member (121) can provide optimal protective performance when the left-right reference length (L1) of the upper portion (121a) is 147 mm, the vertically inclined length (L2) of the column portion (121b) is 1177 mm, and the left-right reference distance (L3) of the lower portions of the column portion (121b) is 424 mm.

[0062] In addition, it is preferable that the first reinforcing member (121) be arranged in a form in which the upper portion (121a) of the side reference is positioned at a position (L4) spaced 70 mm downward from the upper surface of the third body part (113), as shown in FIG. 5, and the pillar portion (121b) is positioned at a position (L5) spaced 38 mm inward from the left and right sides of the third body part (113).

[0063] In addition, the second reinforcing member (122) is a plurality of reinforcing bar structures formed in a '-' structure using reinforcing bars having a reinforcing bar diameter of 10 mm to 16 mm (most preferably a standard of D13), and as shown in FIG. 3, it is connected to the left and right column parts (121b) of the plurality of first reinforcing members (121) in a vertical direction and spaced apart from each other, thereby forming a grid-like reinforcing structure on both left and right sides inside the protective block body (1110).

[0064] In addition, the second reinforcing member (122) is spaced apart from each other at equal intervals in the vertical direction perpendicular to the column portion (121b) of the first reinforcing member (121), and the distance (D4) at which the two are spaced apart at equal intervals is set to 290 mm to 310 mm.

[0065] Through this, a plurality of square frames forming a plurality of rows and columns are provided through orthogonal cross-connections (interconnected through welding depending on the implementation) of the column portion (121b) of the first reinforcing portion (121) and the second reinforcing portion (122), thereby forming a grid-like reinforcing structure on both left and right sides of the reinforcing structure (120).

[0066] Specifically, among the plurality of square frames formed through the orthogonal cross-connection of the column portion (121b) of the first reinforcing member (121) and the second reinforcing member (122), the square frames of the front row and the rear row based on the front-back direction are provided with a front-back reference length (D3) of 460 mm to 465 mm (most preferably 462.5 mm), and the square frames of the remaining rows among the plurality of square frames are provided with a front-back reference length (D2) of 580 mm to 620 mm (most preferably 600 mm).

[0067] In addition, a plurality of square frames formed through orthogonal cross-connections of the column portion (121b) of the first reinforcing member (121) and the second reinforcing member (122) are provided with a tilted height (D4) in the vertical direction of 290 mm to 310 mm (most preferably 300 mm).

[0068] The buried structure and standard features of the first reinforcing member (121) and the second reinforcing member (122) that constitute the reinforcing structure (120) are linked to the structural and standard features of the protective block body (110) described above, thereby achieving an improvement in protective performance.

[0069] In addition, the first reinforcing member (130) is a plurality of reinforcing bar structures made of a '-' structure using reinforcing bars having a reinforcing bar diameter of 26 mm to 32 mm (most preferably a standard of D29), and is installed so as to be positioned at the center of the left and right direction of the protective block body (110) at least one height above each of the front and rear sides of the protective block body (110) as shown in FIG. 3.

[0070] Specifically, the first reinforcing member (130) is provided in three pieces, one piece is placed on the front side of the protective block body (110) and two pieces are placed on the rear side. As shown in FIGS. 3 and 4, it is preferable that the first reinforcing member (130) placed on the front side of the protective block body (110) be placed at a height between the two first reinforcing members (130) placed on the rear side of the protective block body (110) in the vertical height direction.

[0071] In addition, the installation height (H1) of the first reinforcing member (130) disposed at the lower end of the first reinforcing member (130) disposed at the rear of the protective block body (110) is set to 350 mm, the installation height (H2) of the first reinforcing member (130) disposed at the front of the protective block body (110) is set to 500 mm, and the installation height (H3) of the first reinforcing member (130) disposed at the upper end of the first reinforcing member (130) disposed at the rear of the protective block body (110) is set to 650 mm, so that it is preferable that the intervals between the installation heights of each first reinforcing member (130) be 150 mm at equal intervals.

[0072] In connection with this, a first fastening member (140) for fastening a plurality of protective blocks (100) arranged adjacently in the front and rear using a steel bar member (300) is connected to the front end of the first reinforcing member (130) arranged in front of the protective block body (110) and the rear end of the first reinforcing member (130) arranged in the rear of the protective block body (110).

[0073] For this purpose, the first fastening member (140) includes a first coupler portion (141) and a first eye bolt portion (142).

[0074] First, the first coupler part (141) is a plurality of coupler modules that are connected to the front end of the first reinforcing member (130) embedded in the front side of the protective block body (110) among the plurality of first reinforcing members (130) and the rear end of the first reinforcing member (130) embedded in the rear side of the protective block body (110) among the plurality of first reinforcing members (130), as shown in FIGS. 6 and 7, respectively, and have a predetermined open space that is connected to the fastening member installation groove (110H) on the opposite side of the connection portion.

[0075] Next, the first eye bolt portion (142) is a plurality of eye bolt modules that are installed so as to be fastened to each of the plurality of first coupler portions (141) as shown in FIGS. 6 and 7 and placed within the fastening member installation groove (110H), and when installed, the steel rod insertion hole (142H) provided in the center is exposed in the vertical direction.

[0076] According to the implementation, the first coupler part (141) and the first eye bolt part (142) have a one-touch coupler type fastening structure so that when connected, the first eye bolt part (142) is pushed toward the first coupler part (141) to fasten at once, and the connection is not easily disconnected.

[0077] Through this, as shown in FIG. 6, at least one first eye bolt portion (142) disposed in a fastening member installation groove (110H) provided at the rear end of one front-end protective block (100) among a plurality of protective blocks (100) disposed adjacently in the front and rear, and at least one first eye bolt portion (142) disposed in a fastening member installation groove (110H) provided at the front end of another protective block (100) on the rear end, a steel rod member (300) in the form of a rod is installed through the steel rod insertion hole (142H) of both the first eye bolt portion (142) and the fastening member installation groove (110H) provided at the front end of the other protective block (100) on the rear end, so that fastening is achieved between a plurality of protective blocks (100) disposed adjacently in the front and rear.

[0078] In addition, in the process of performing the fastening between a plurality of protective blocks (100) adjacently arranged in the front and rear using a reinforcing member (300), it is preferable that the installation positions of the front end of the first reinforcing member (130) arranged in front of the protective block body (110) and the first reinforcing member (130) arranged in the rear of the protective block body (110) do not overlap and are spaced apart from each other at equal intervals along the height in order to prevent the first eye bolt portion (142) of the first fastening member (140) coupled to the end of the first reinforcing member (130) from colliding with each other.

[0079] In addition, the second reinforcing member (150) is a plurality of reinforcing bar structures made of a '-' structure using reinforcing bars having a reinforcing bar diameter of 26 mm to 32 mm (most preferably D29 standard), and as shown in FIG. 3, it is installed on the upper side of the protective block body (110) from the front to the rear of the protective block body (110) so as to be positioned at the center of the left and right directions of the protective block body (110).

[0080] In connection with this, a second fastening member (160) is connected to the front and rear ends of the second reinforcing member (150) using a connecting device (200) to fasten a plurality of protective blocks (100) arranged adjacent to each other in the front and rear.

[0081] For this purpose, the second fastening member (160) includes a second coupler portion (161) and a second eye bolt portion (162).

[0082] First, the second coupler part (161) is a plurality of coupler modules connected to the front and rear ends of the second reinforcing member (150) as shown in FIGS. 3 and 6, respectively, and has a predetermined open space connected to the connecting device installation groove (115H) on the opposite side of the connecting portion.

[0083] Next, the second eye bolt portion (162) is a plurality of eye bolt modules that are fastened to each of the plurality of second coupler portions (161) as shown in FIGS. 3 and 6, and is installed so that the connecting bolt insertion hole (162H) provided in the center is exposed in the left and right directions within the connecting device installation groove (115H).

[0084] According to the implementation, the second coupler part (161) and the second eye bolt part (162) have a one-touch coupler type fastening structure so that when connected, the second eye bolt part (162) is pushed toward the second coupler part (161) to fasten at once, and the connection is not easily disconnected.

[0085] Accordingly, the connecting device (200) that performs the connection by connecting one end of a front-end side protective block (100) among a plurality of adjacently arranged protective blocks (100) and the other end of a rear-end side protective block (100) includes a pair of connecting bodies (210), a pair of fastening plate structures (220), an upper plate structure (250), a first fastening member (230), and a second fastening member (240) as shown in FIGS. 2 and 6 to achieve connection using a connecting device installation groove (115H) and a second eye bolt portion (162).

[0086] Here, a pair of connecting bodies (210) are provided in a '┌┐' structure and are placed at the front and rear of each position where a pair of connecting device installation grooves (115H) are provided on the outer upper surface of the protective block body (110).

[0087] Through this, a pair of connecting bodies (210) are installed so that the lower part of the pillar portions placed vertically on the '┌┐' structure of the connecting body (210) covers the left and right ends of the connecting device installation groove (115H) as shown in FIGS. 2 and 6.

[0088] Next, the upper plate structure (250) is a plate structure arranged so that one end covers the upper surface of a connecting body (210) arranged on the rear end of one protective block (100) on the front side among a plurality of protective blocks (100) arranged adjacently in the front and back as shown in FIG. 6, and the other end covers the upper surface of a connecting body (210) arranged on the front end of another protective block (100) on the rear side among a plurality of protective blocks (100) arranged adjacently in the front and back.

[0089] Next, a pair of fastening plate structures (220) is a plate structure arranged so that one end covers the lower ends on both sides of the left and right sides of the connecting body (210) arranged on the upper rear end of one protective block (100) on the front side among a plurality of protective blocks (100) arranged adjacently in the front and back as shown in FIG. 6, and the other end covers the lower ends on both sides of the left and right sides of the connecting body (210) arranged on the front end of the other protective block (100) on the rear side among a plurality of protective blocks (100) arranged adjacently in the front and back.

[0090] In addition, the first fastening member (230) is configured for coupling between the upper surface of a pair of connecting bodies (210) and the upper plate structure (250) as shown in FIGS. 2 and 6, and is composed of a first connecting bolt portion and a first nut portion.

[0091] Specifically, the first connecting bolt portion of the first fastening member (230) is installed so as to penetrate the front and rear ends of the upper plate structure (250) and the upper surface of the connecting body (210) from the outside, and a first nut portion is fastened to both ends of the first connecting bolt portion installed in this manner.

[0092] Lastly, the second fastening member (240) is configured for connection between the lower left and right sides of a pair of connecting bodies (210), a pair of fastening plate structures (220), and the upper part of the protective block body (110), as shown in FIGS. 2 and 6, and is composed of a second connecting bolt portion and a second nut portion.

[0093] Specifically, the second connecting bolt portion of the second fastening member (240) is installed so as to penetrate the front and rear ends of the fastening plate structure (220) from the outside, the left and right ends of the connecting body (210), the connecting device installation groove (115H), and the connecting bolt insertion hole (162H) of the second eye bolt portion (162), and the second nut portion is fastened to both ends of the second connecting bolt portion installed in this manner.

[0094] According to the implementation, the protective block (100') may further include a first metal wire member (170') and a second metal wire member (180') to prevent it from being broken more easily upon collision with a vehicle, to prevent it from being pushed backwards by a certain distance due to a vehicle collision, and to prevent flying debris such as concrete fragments from being generated more upon collision with a vehicle and from flying far even if they are generated.

[0095] Specifically, as illustrated in FIG. 8, inside the concrete protective block body (110') corresponding to the basic structure of the protective block (100'), the protective performance improvement structure by the first reinforcing member (121') and the second reinforcing member (122') corresponding to the same as described above and the protective performance improvement structure by the first reinforcing member (130') and the second reinforcing member (150') are linked, and the first metal wire member (170') and the second metal wire member (180') are extended and wound in the longitudinal direction along the outer periphery of the first reinforcing member (130') and the second reinforcing member (150') can achieve a more reliable and advanced improvement in protective performance.

[0096] Here, the first metal wire member (170') is configured to be wound in a spring shape on the outside of a plurality of first reinforcing members (130') so that each of the plurality of first reinforcing members (130') is arranged at the center inside, and welding is performed at any number of points through a connecting bar in which one end is connected to the outside of the first reinforcing member (130') and the other end is connected to the inside of the first metal wire member (170') in order to be interconnected while the first reinforcing member (130') is arranged at the center.

[0097] More specifically, the first metal wire member (170') is a wire member having a diameter of 4 mm to 5 mm (most preferably 4.5 mm), and the diameter of the spring-shaped member formed by winding around the outer side of each of the plurality of first reinforcing members (130') is provided to be 190 mm to 210 mm (most preferably 200 mm).

[0098] In addition, the second metal wire member (180') is configured to be wound in a spring shape on the outside of a plurality of second reinforcing members (150') so that each of the plurality of second reinforcing members (150') is arranged at the center inside, and welding is performed at any number of points through a connecting bar in which one end is connected to the outside of the second reinforcing member (150') and the other end is connected to the inside of the second metal wire member (180') in order to be interconnected while the second reinforcing members (150') are arranged at the center.

[0099] More specifically, the second metal wire member (180') is a wire member having a diameter of 4 mm to 5 mm (most preferably 4.5 mm), and the diameter of the spring-shaped member formed by winding around the outer side of each of the plurality of second reinforcing members (150') is provided to be 190 mm to 210 mm (most preferably 200 mm).

[0100] The file receiving structure (400) is embedded and connected to each of a plurality of installation grooves formed at predetermined intervals on the installation surface (L) of a plurality of protective blocks (100) as illustrated in FIG. 1, and is provided with a first pile insertion groove open upwards inside.

[0101] More specifically, the file receiving structure (400) is formed of concrete or synthetic resin material and is formed to be embedded within a plurality of installation grooves prepared in advance on the installation surface (L) of the protective block (100).

[0102] Depending on the implementation, the lower part of the pile receiving structure (400) may be designed with a structure that takes construction stability into consideration, including a tapered or protruding structure to increase friction with the ground and prevent rotation or horizontal deviation from the outside.

[0103] In addition, the inside of the file receiving structure (400) is provided with a first file insertion groove that is open toward the top, and this insertion groove has a size and depth corresponding to the outer diameter of the file structure (500) so that it can be tightly coupled without interference when inserted.

[0104] The interior of the first file insertion groove may be provided with friction ribs, elastic inserts, or adhesive materials to prevent rotation or reduce vibration of the file structure.

[0105] The file structure (500) is provided in a cylindrical shape as illustrated in FIG. 1, and is inserted and installed in the first file insertion groove provided in the file receiving structure (400) so that the upper part protrudes from the ground.

[0106] Here, the pile structure (500) is a cylindrical support member formed of a steel pipe or high-strength synthetic resin, etc., the lower end of which is inserted into the insertion groove of the pile receiving structure (400) and fixed to the inside of the ground, and the upper end is maintained in a state of protruding into the ground.

[0107] This protruding upper section acts as an area that is directly connected to the lower part of the protective block, and by being exposed at a certain height, it serves as a structural resistance that blocks the horizontal force or transfer force that occurs during a collision.

[0108] In connection with this, the protective block body (110) is provided with at least one second pile insertion groove (111H) into which a portion protruding from the ground of a pile structure (500) inserted into a first pile insertion groove is inserted by being inserted upward along the longitudinal direction of the front and rear of the lower surface as shown in FIG. 1.

[0109] Specifically, the interior of the second file insertion groove (111H) can be designed to include a guide groove or insertion depth control jaw to suppress the phenomenon of the protective block (100) moving horizontally or being lifted, and dimensional precision is secured to minimize fastening errors so that no gap occurs in the up-down and rotational directions after the block and the file are combined.

[0110] Through this structure, the pile receiving structure (400), the pile structure (500), and the protective block body (110) are joined in a mutually aligned state, and when a collision load is applied, the horizontal load is distributed through the pile receiving structure that is embedded and fixed in the ground, so that the phenomenon of the protective block falling, sliding, and rotating can be effectively prevented.

[0111] Additionally, because it is a detachable structure, it is easy to repeatedly install and dismantle on site, and it can be recycled without damaging the structure during maintenance or relocation, ensuring both convenience of construction and economy.

[0112]

[0113] 2. Description of the performance test of the OSC modular movable rigid protective fence with enhanced installation stability.

[0114] The following tests for safety review in the event of a vehicle collision were conducted by performing a collision simulation based on the OSC modular movable rigid protective fence (10) with enhanced installation stability according to the present invention, which is composed of a plurality of protective blocks (100); a connecting device (200); and a steel bar member (300); described above, in which the protective blocks (100) are connected and connected along the longitudinal direction in the front and rear directions.

[0115] Here, the plurality of protective blocks (100) of the OSC modular movable rigid protective fence (10) with enhanced installation stability to be inspected include a protective block body (110), a reinforcing structure (120), a first reinforcing member (130), a second reinforcing member (150), a first fastening member (140), and a second fastening member (160), and are manufactured in accordance with the most desirable specifications and structural conditions described above.

[0116] Specifically, the test items were strength performance for large vehicle collisions and passenger safety for small vehicle collisions. The review method was to conduct a crash simulation considering SB1 class crash conditions in accordance with the performance evaluation method of vehicle safety fences in the Road Safety Facility Installation and Management Guidelines (Ministry of Land, Infrastructure and Transport, 2014) and the Vehicle Protection Safety Facility Real Vehicle Crash Test Work Manual (Ministry of Land, Infrastructure and Transport, 2015).

[0117]

[0118] (1) Strength performance evaluation

[0119] The results of the strength performance evaluation are as shown in Table 1 below.

[0120] Item Performance Standard Simulation Results Structural Performance Strength Performance Strength will be maintained Has strength that trucks will not break through. Deformation Performance <Maximum Deformation> Concrete foundation: 0.3 m or less Pillars embedded in the soil: 1.0 m or less Maximum Deformation: 0.26 m Maximum Occupancy Width: 0.26 m Behavior of the vehicle after collision There will be no overturning of the vehicle The center of gravity of the vehicle will not invade the center line of the safety fence Escape Box Escape into the box Component Scatter Component members will not scatter onto or off the road and cause harm to passengers or third parties There will be no large scattering of component members in the event of a vehicle collision.

[0121] As shown in Table 1, the final deformation of the OSC modular movable rigid protective fence (10) with enhanced installation stability according to the present invention occurred at 0.26 m, and the maximum vehicle footprint during the collision occurred at 0.26 m. Accordingly, the center of gravity of the colliding vehicle did not infringe upon the center of the vehicle protective fence, and although the wheels of the vehicle did not completely leave the escape box during the analysis time, it was predicted that the boundary would not be violated based on the vehicle's travel path.

[0122] In addition, no abnormal behavior such as vehicle overturning was observed in the overall collision behavior, and the main damage to the OSC modular movable rigid protective fence (10) with enhanced installation stability according to the present invention after a collision with a large vehicle was a tensile crack on the opposite side of the collision of the protective block (100) that initially collided, and only a partial damage to the concrete occurred at the end of the protective block (100) near the collision site.

[0123]

[0124] (2) Passenger protection performance evaluation

[0125] The results of the passenger protection performance evaluation are as follows in Table 2.

[0126] Item Performance Standard Simulation Results Occupant Protection Performance THIV 33km / h or less 19.5km / h PHD 20g or less 7.7g ASI (reference) 0.98 Vehicle Safety Performance after Collision There will be no vehicle overturning, etc. The rotation angle of Roll and Pitch will be 75° or less Roll: 4.9°, Pitch: 8.6° Escape Box Escape within the box Component Flying Component parts will not fly onto or off the road and cause harm to passengers or third parties. No large flying of component parts can be seen in the event of a vehicle collision.

[0127] As shown in Table 2, the THIV, which is the occupant safety index of the OSC modular movable rigid protective fence (10) with enhanced installation stability according to the present invention, was 19.5 km / h, which is below the performance standard of 33 km / h, and the PHD was 7.7 g, which is below the performance standard of 20 g. The ASI used in the European standard was 0.98. Accordingly, the maximum rotation angle of the vehicle during the collision was Roll: 4.9°, Pitch: 8.6°, which is below the performance standard of 75°. The escape box for evaluating the vehicle behavior after the collision showed that the vehicle's wheels were separated into the escape box, and no abnormal behavior such as the vehicle overturning was observed in the overall collision behavior.

[0128] As a result, it can be seen that the OSC modular movable rigid protective fence (10) with enhanced installation stability according to the invention has a considerably high level of protective performance based on the characteristics of the specific structure and specifications of the detailed configuration when based on a plurality of protective blocks (100), and further, when the first metal wire member (170') and the second metal wire member (180') are further added according to implementation, not only the degree of rigidity but also the degree of scattering and the degree of scattering distance can be further reliably improved.

[0129] The embodiments disclosed in the present invention are intended to illustrate, not limit, the technical concepts of the present invention. These embodiments do not limit the scope of the technical concepts of the present invention. The scope of protection should be interpreted according to the following claims, and all technical concepts within the scope equivalent thereto should be construed as being included within the scope of the present invention.

[0130] <Explanation of symbols>

[0131] 10: OSC modular mobile rigid protective fence

[0132] 100, 100': Protective block

[0133] 110: Protective block body

[0134] 111: First body part 112: Second body part

[0135] 113: Third body part 110H: Fastening member installation groove

[0136] 115H: Connection device installation groove 111H: Second file insertion groove

[0137] 120: Reinforcement structure

[0138] 121: First reinforcement section 122: Second reinforcement section

[0139] 130: First reinforcing member

[0140] 140: First binding member

[0141] 141: First coupler section 142: First eye bolt section

[0142] 142H: Steel bar insertion hole

[0143] 150: Second reinforcing member

[0144] 160: Second binding member

[0145] 161: Second coupler section 162: Second eye bolt section

[0146] 162H: Connecting bolt insertion hole

[0147] 170': First metal wire member

[0148] 180': Second metal wire member

[0149] 200: Connector

[0150] 210: connecting body 220: fastening plate structure

[0151] 230: First fastening member 240: Second fastening member

[0152] 250: Top plate structure

[0153] 300: No steel bars

[0154] 400: File receiving structure

[0155] 500: File structure

Claims

1. A plurality of protective blocks, at least two of which are arranged along the longitudinal direction; A pile receiving structure having a first pile insertion groove that is formed at a predetermined interval in each of a plurality of installation grooves on the installation surface of the above-mentioned plurality of protective blocks and is provided with an upper-open first pile insertion groove therein; and A pile structure is provided in a tubular shape, and is inserted and installed in the first pile insertion groove provided in the pile receiving structure so that the upper part protrudes from the ground; The above protective block is, A protective block body having a tapered shape that becomes narrower from left to right as it goes upward, and having at least one second pile insertion groove in which a portion protruding from the ground of the pile structure inserted into the first pile insertion groove is inserted upward along the longitudinal direction of the front and rear on the lower surface; and A reinforcing structure comprising: a plurality of first reinforcing parts embedded inside the body of the protective block and arranged to be spaced apart from each other along the front-back direction in a '┌┐' structure using steel bars; and a second reinforcing part formed to be spaced apart from each other along the vertical direction orthogonally to the left and right sides of the plurality of first reinforcing parts and connected to form a grid-like reinforcing structure on both left and right sides inside the body of the protective block; characterized in that it comprises: OSC modular movable rigid protective fence with enhanced installation stability.

2. In paragraph 1, The above protective block body is provided with a size ratio of the length (D) in the front-back direction, the height (H) in the up-down direction, the bottom width (W1) in the left-right direction, and the top width (W2) in the left-right direction as 3000 mm (D): 1270 mm (H): 550 mm to 615 mm (W1): 180 mm to 250 mm (W2). The reinforcing bar diameter of the first reinforcing part and the reinforcing bar diameter of the second reinforcing part are characterized in that they are set to 10 mm to 16 mm. OSC modular movable rigid protective fence with enhanced installation stability.

3. In paragraph 2, The above first reinforcement part is based on a '┌┐' structure using steel bars. The upper part of the '-' structure placed on top; and Includes a pillar part that is connected in a ' / ' structure from the left end of the upper part and is connected in a '\' structure from the right end of the upper part to be symmetrical on both sides; The above first reinforcing part is characterized in that the size ratio of the left-right reference length (L1) of the upper part, the up-down reference inclined length (L2) of the column part, and the left-right reference spaced length (L3) of the lower ends of the column part is provided as 145 mm to 150 mm (L1): 1170 mm to 1180 mm (L2): 520 mm to 425 mm (L3). OSC modular movable rigid protective fence with enhanced installation stability.

4. In paragraph 3, The lattice-shaped reinforcing structure formed on both sides of the above reinforcing structure is provided with a plurality of square frames forming a plurality of rows and columns through orthogonal cross-connections of the first reinforcing portion and the first reinforcing portion. Among the above multiple square frames, the square frames of the front and rear rows in the front-back direction are provided with a front-back standard length (D3) of 460 mm to 465 mm, and the square frames of the remaining rows in the above multiple square frames are provided with a front-back standard length (D2) of 580 mm to 620 mm. The above-mentioned plurality of square frames are characterized in that the vertically inclined height (D4) is set to 290 mm to 310 mm. OSC modular movable rigid protective fence with enhanced installation stability.

5. In paragraph 3, The above protective block is, A plurality of first reinforcing members are installed in a '-' structure using steel bars, and are placed at the center of the left and right direction of the protective block body on at least one height of each of the front and rear sides of the protective block body; and It further includes a second reinforcing member which is installed in a '-' structure using steel bars and is placed in the center of the left and right direction of the protective block body from the front to the rear of the protective block body on the upper side of the protective block body. The diameter of the reinforcing bars of the plurality of first reinforcing members and the second reinforcing members is characterized in that it is provided to be 26 mm to 32 mm. OSC modular movable rigid protective fence with enhanced installation stability.

6. In paragraph 5, The above protective block is, It further includes a first metal wire member that is wound in a spring shape on the outer side of the plurality of first reinforcing members so that each of the plurality of first reinforcing members is placed at the inner center; The diameter of the first metal wire member is set to 4 mm to 5 mm, The diameter of the spring-shaped member formed by winding the outer side of each of the plurality of first reinforcing members by the first metal wire member is set to 190 mm to 210 mm. OSC modular movable rigid protective fence with enhanced installation stability.

7. In paragraph 5, The above protective block is, It further includes a second metal wire member that is wound in a spring shape on the outside of the second reinforcing member so that the second reinforcing member is placed at the center inside; The diameter of the second metal wire member is set to 4 mm to 5 mm, The diameter of the spring-shaped member formed by the second metal wire member winding around the outer side of each of the second reinforcing members is set to 190 mm to 210 mm. OSC modular movable rigid protective fence with enhanced installation stability.

8. In paragraph 5, The above-mentioned mobile rigid protective fence with self-generation and light-emitting functions is It further includes a connecting device in which one end is connected to one of the front-end side protective blocks among the plurality of protective blocks arranged adjacent to each other, and the other end is connected to the other protective block on the rear-end side; The above protective block body is provided with a pair of connecting device installation grooves open in the left and right directions on the front and rear left and right sides symmetrical with respect to the installation height of the second reinforcing member, The above protective block is, It further includes a second fastening member including a pair of second coupler parts, which are respectively connected to the front and rear ends of the second reinforcing member, and opposite sides of the connection portions are connected to the connection device installation groove; and a pair of second eye bolt parts, which are fastened to each of the second coupler parts and installed so that the connection bolt insertion hole provided in the center is exposed in the left and right direction within the connection device installation groove. The above connecting device, A plurality of connecting bodies arranged in the front and rear of a position where a pair of connecting device installation grooves are provided on the upper outer surface of the protective block body, provided with a '┌┐' structure; A top plate structure arranged so that one end covers the upper surface of the connecting body arranged at the rear end of one of the plurality of protective blocks adjacent to each other in the front and rear, and the other end covers the upper surface of the connecting body arranged at the front end of the other protective block in the rear; A fastening plate structure arranged so that one end covers the lower left and right sides of the connecting body arranged at the rear end of one of the plurality of protective blocks adjacent to each other, and the other end covers the lower left and right sides of the connecting body arranged at the front end of the other protective block; A first fastening member provided with a first connecting bolt portion penetrating the front and rear ends of the upper plate structure from the outside, the upper surface of the connecting body, and a first nut portion fastened to both ends of the connecting bolt portion; and A second fastening member comprising front and rear end portions of the fastening plate structure from the outside, left and right end portions of the connecting body, the connecting device installation groove, a second connecting bolt portion penetrating the connecting bolt insertion hole of the second eye bolt portion, and a second nut portion fastened to both ends of the connecting bolt portion; characterized in that it includes; OSC modular movable rigid protective fence with enhanced installation stability.

Images