KR102618737B1 - Prefabricated safety fence that is easy to combine and disassemble - Google Patents

Abstract

The present invention relates to a prefabricated safety fence that is easy to assemble and dismantle. Specifically, it is easy to install and assemble in the field, is easy to separate and store after use, and can be reused after storage, resulting in economical cost savings. It is about a prefabricated safety fence that is not only obtainable, but is also easy to assemble and dismantle, maximizing work efficiency by allowing easy entry and exit during construction.
The present invention is a facility in which a plurality of fence units (100) are adjacent to each other to form a fence by temporarily installing for a predetermined period of time to decorate the exhibition space and dividing it from the utilized space. It is installed on the floor and has one or more horizontal rails. Base 110 on which (111) and vertical rail 112 are formed; A partition 120 whose lower end is inserted into the vertical rail 112; and a blocking wall 130 that is perpendicular to the partition wall 120 and has a coupling member 131 protruding so as to be inserted into the horizontal rail 111.

Description

Prefabricated safety fence that is easy to combine and disassemble}

The present invention relates to a prefabricated safety fence that is easy to assemble and dismantle. Specifically, it is easy to install and assemble in the field, is easy to separate and store after use, and can be reused after storage, resulting in economical cost savings. It is about a prefabricated safety fence that is not only obtainable, but is also easy to assemble and dismantle, maximizing work efficiency by allowing easy entry and exit during construction.

Exhibition halls, model houses, promotional booths, expo booths, gallery partitions, graduation work exhibitions, academic conference booths, conference booths, etc. can be installed in spaces with individual rooms with separate doors, but are generally set in spaces such as large open spaces. After being allocated, an event is held by installing a simple wall to divide the allocated space from other spaces, and then when the event ends, the simple wall is demolished.

Therefore, a wall that is temporarily installed as above and must be removed satisfies several conditions.

First, it must be easy to transport. Since events can take place anywhere in the country rather than a specific space, ease of transportation is required. In order to ensure ease of transportation, two major conditions must be satisfied: first, the object to be transported must be very light, and second, the size of the object to be transported must be small.

If you move an object that meets the conditions opposite to the above, that is, an object that is not easy to transport, you will face the problem of requiring excessive labor and having to carefully calculate the movement route due to its large size when transporting it. .

Next, it must be easy to install and dismantle. Where an event takes place, the space must be temporarily divided, and then the wall used for the division must be demolished, so the same operation is repeated in reverse. This is a very cumbersome task, and if it takes a long time to install and also takes a long time to demolish, it will not meet the requirements for a simple wall.

Next, the less special installation tools are required, the better. If the number of installation tools required for a simply installed wall increases, the ease of transportation mentioned above will be hindered, and the installation and demolition process will also become complicated, so this will also fall short of the requirements for a simple wall.

Lastly, recyclability is required. If a wall that is easily installed and removed as a one-time product is manufactured, the burden on the business operator who installs and removes the simple wall increases, which is ultimately passed on to the consumer who wants to hold the event. Therefore, if the wall is assembled, dismantled, and then reused, costs will be reduced for both business owners and consumers.

For example, Registered Office No. 20-0366647 discloses an assembly member for an exhibition booth, specifically, a coupling hole is perforated on one side, the inside is open, and the outer surface of either the upper/lower side or the left/right side is longitudinally oriented. A frame is formed with an indentation groove formed along the frame, and an inlet groove is formed at one end, and an arc opposite to each other in the inward direction is fastened to the inlet groove on one side of the frame and has a guide groove on one side of the upper end and an inner tip that is open on both sides. A body with two uneven surfaces stepped in a shape and a concave inlet formed on the front part of the other end, a stopper part that enters the inside of the body from one side and is formed on the other end, a fitting hole formed in one end of the inner surface of this stopper part, and one end of this fitting hole. A fastening piece that extends and is spaced apart from each other and has a fastening portion bent in opposite directions at the ends and an elastic portion located between the two fastening pieces, and an eccentric eccentrically coupled to a fitting hole formed in the fastening piece by an adjustment pin. It consists of a fastener having a cam and the control pin.

This prior art can significantly reduce the burden of installation costs through a simple configuration, and when disassembling an installed booth, the fastener can be disassembled and stored with the fastener inserted into one end of the frame. When installing the booth, the length of the outer surface of the frame can be After inserting a fastener into a groove formed in a direction, the frame with the fastener inserted can be moved to a location desired by the user.

However, in the case of the prior art, as the width of the frame is widened to insert fasteners into the inside of the frame, the width of the frame is inevitably large relative to the entire space of the exhibition booth, which not only reduces space utilization but also reduces the space inside the exhibition booth. In other words, there is a problem that the exhibition space becomes narrow.

In addition, since the frame is firmly fastened to the frame by the fastener inserted into the inside of the frame, the fastener must be aligned with the coupling hole of the frame, so the task of aligning the fastener inserted into the inside of the frame, which is a narrow space, with the coupling hole is required. Due to this difficulty, there is a problem in that installation workability is significantly reduced.

Republic of Korea Registered Utility Model No. 20-0366647

The present invention was invented to solve the above problems, and its purpose is to provide easy installation and assembly in the field, easy to separate and store after use, and reuse after storage, thereby achieving economical cost savings. The purpose is to provide a prefabricated safety fence that is easy to assemble and dismantle, maximizing work efficiency by allowing easy entry and exit during construction.

The present invention to achieve the above-described technical problem is a facility in which a plurality of fence units 100 are adjacent to each other to form a fence to be temporarily installed for a predetermined period of time to decorate the exhibition space and to divide the space into use, and the floor surface is It is installed on the base 110 on which one or more horizontal rails 111 and vertical rails 112 are formed; A partition 120 whose lower end is inserted into the vertical rail 112; and a blocking wall 130 that is perpendicular to the partition wall 120 and has a coupling member 131 protruding so as to be inserted into the horizontal rail 111.

In one embodiment, a manipulation unit 150 is provided inside the upper and lower portions of the partition wall 120, and when the manipulation unit 150 is operated, the barrier wall 130 is configured to rise and fall. ) is embedded in the receiving portion 151 formed on the inner side of the partition wall, and has teeth 153 formed on one side of the inner wall surface movable body 152; A rotating body 154 formed on the outside to engage with the teeth 153, rotated at the center by a rotating shaft 156, and exposed to the front surface of the partition 120; And it is formed to protrude on the outer surface of the rotating body 154, is inserted into the recessed portion 132 formed at one end of the blocking wall 130, is moved by the moving body 152, and is configured to be symmetrical from top to bottom. Includes a protruding member 155.

In one embodiment, it further includes an adjustment tool 200 for moving the blocking wall 130 coupled to both sides of the partition wall 120 up and down, wherein the adjustment tool 200 moves the partition wall 120 A pair of insertion rods 201 each inserted into the insertion holes 157 formed in the upper and lower parts of the rotating body 154; a rotation tool 202 provided between the insertion rods 201 and coupled to the rotation body 154 to rotate the rotation body 154; A power transmitter 203 that transmits power to the rotating tool 202; A housing 204 surrounding the power transmission element 203 from the outside; and a handle 205 provided on the outside of the housing 204, which transmits power to the power transmitter 203 by rotation.

In one embodiment, the blocking walls 130 are arranged in a row so as to be adjacent to each other, or are arranged alternately in a zigzag shape.

According to the prefabricated safety fence that is easy to assemble and dismantle of the present invention, it is possible to temporarily construct an exhibition hall booth for product advertisement, a wall for product display, or a partition in a building, so as to display or promote the product. Construction can be done efficiently, and installation and disassembly can be performed more efficiently.

In addition, it is possible to easily deliver goods to the construction site and allow workers to enter and exit, thereby increasing work efficiency by allowing work to be done by only partially opening the installed fence without completely dismantling it.

In addition, anyone can easily and easily install the fence unit, making it easy to install and assemble in the field. It is also easy to separate and store after use, and the barriers and partitions are tightly bound and fixed, providing durability as well as support. There is an effect that can greatly improve one's performance.

Figure 1 is a front view showing a portion of the prefabricated safety fence that is easy to assemble and disassemble according to the present invention.
Figure 2 is a plan view of Figure 1.
Figure 3 is an exploded perspective view of a fence unit constituting a prefabricated safety fence that is easy to assemble and disassemble according to the present invention.
Figure 4 is a front cross-sectional view of Figure 1.
Figure 5 is a cross-sectional view of Figure 1.
FIG. 6 is a diagram for explaining the operating state of FIG. 4.
Figure 7 is a perspective view schematically showing an adjustment tool for opening and closing a blocking wall constituting a fence unit.
Figure 8 is a cross-sectional view showing the interior of Figure 7.
Figure 9 is a diagram showing a modified example of Figure 2.

Hereinafter, a detailed description of preferred embodiments of the present invention will be described with reference to the accompanying drawings. It should be noted that like elements in the drawings are represented by like symbols wherever possible. In the following description, specific details appear and are provided to aid in a more general understanding of the invention. Also, in describing the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

The terms used in this specification are general terms that are currently widely used as much as possible while considering the function in the present invention, but this may vary depending on the intention or precedent of a technician working in the technical field to which the present invention belongs, the emergence of new technology, etc. there is. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the relevant description of the present invention. Therefore, the terms used in this specification should be defined based on the meaning of the term and the overall content of this specification, rather than simply the name of the term.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another component, for example, without departing from the scope of rights according to the concept of the present invention, a first component may be named a second component and similarly a second component A component may also be named a first component.

When a component is said to be “connected” or “connected” to another component, it is understood that it may be directly connected to or connected to that other component, but that other components may also exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly adjacent to" should be interpreted similarly.

The terms used in this specification are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in this specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings they have in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

Hereinafter, the prefabricated safety fence that is easy to assemble and dismantle of the present invention will be described in detail by explaining preferred embodiments of the present invention with reference to the attached drawings.

Figure 1 is a front view showing a portion of the prefabricated safety fence that is easy to assemble and disassemble according to the present invention, Figure 2 is a plan view of Figure 1, and Figure 3 is a prefabricated safety fence that is easy to assemble and disassemble according to the present invention. This is an separated perspective view of the fence unit, FIG. 4 is a front cross-sectional view of FIG. 1, and FIG. 5 is a cross-sectional view of FIG. 1.

Referring to Figures 1 to 5, the prefabricated safety fence that is easy to assemble and disassemble according to the present invention is installed temporarily for a predetermined period of time to decorate the exhibition space, and has a plurality of fence units 100 adjacent to each other to partition the space to be used. It is an invention that constructs a fence while doing so. In particular, in the present invention, when the fence unit 100 is provided with a plurality to form a prefabricated safety fence, it can be used as a commercial exhibition hall for the purpose of commerce such as a department store, trade fair, or exhibition, as well as a variety of small space exhibitions, etc. It can be installed anywhere. In other words, it can be reused as a structure that consists of a plurality of fence units 100, temporarily divides them to form a work space, and then dismantles after performing work such as interior decoration for exhibition. In addition, it has a relatively simple structure and is easy to install and dismantle with a small number of people, so workers can operate it easily.

Looking more specifically, the present invention is installed on the floor and includes a base 110 on which one or more horizontal rails 111 and vertical rails 112 are formed, and a partition 120 whose lower end is partially inserted into the vertical rail 112. ) and a blocking wall 130 that is perpendicular to the partition wall 120 and has a coupling member 131 protruding so as to be inserted into the horizontal rail 111.

Steps are formed at both ends of the base 110 so that the adjacent bases 110 can be smoothly aligned with each other, and a coupling hole 113 is formed at each, so that a bolt or piece nail is inserted into this coupling hole 113. It is fixed to the floor using a back, and the bases 110 are connected to each other.

In addition, a vertical rail 112 is recessed in the middle portion of the base 110, and horizontal rails 111 that are symmetrical to each other are formed on both sides of the vertical rail 112.

Meanwhile, the lower end of the partition wall 120 is inserted into the vertical rail 112 and fixed thereto.

In addition, a blocking wall 130 is inserted and coupled to the horizontal rail 111 described above. The blocking wall 130 has a protruding coupling member 131 to prevent it from being easily separated through firm coupling, and the coupling member 131 is inserted into and fixed to the horizontal rail 111. In addition, both ends are open so that the blocking wall 130 can be inserted by sliding from both ends of the base 110, and coupling holes 113 are formed at both ends of the horizontal rail 111.

In this way, when the partition 120 and the blocking wall 130 are inserted into each rail 111 and 112, they form a ‘十’ shape when viewed from a plan view.

When the fence units 100 are lined up adjacent to each other through such combination, they form a fence shape and a temporary wall. Once such a fence is installed, internal interior construction can be carried out to enable exhibition of various products that can promote products to the outdoors, and product promotion through displays. In other words, it may look like a wall has been installed when viewed from the inside, but in reality, construction is taking place inside, preventing pedestrians going between indoors and outdoors from seeing the construction site taking place inside the fence, thus preventing the phenomenon of spoiling the aesthetics. In the present invention, it has been explained that product promotion can be done outdoors, but in the case of a building where external light is blocked, it can also be used to display various products towards an indoor hallway, so depending on the direction of work, the base (110) ), you only need to change the installation location. Therefore, convenient temporary wall installation is achieved. Additionally, during construction, screens are installed on windows to prevent people from seeing the construction going on inside.

On the other hand, when the above construction is carried out, if materials, tools, etc. are needed inside, the barrier wall 130 must be temporarily opened to allow communication with the outside. For this purpose, an operating unit 150 is provided on the inside of the partition wall 120. do.

This operating unit 150 is embedded in the receiving part 151 formed on the inside of the partition, and is provided on the outside so as to engage with the moving body 152 with teeth 153 formed on one side of the inner wall, and the teeth 153. It is configured to be exposed to the rotating body 154 on which teeth are formed and the outer surface of the rotating body 154, and is inserted into the recessed portion 132 formed at one end of the blocking wall 130 to form the mobile body 152. It consists of a protruding member 155 that moves as shown. The above-described protruding member 155 is partially inserted into the inside of the blocking wall 130, but since it comes into contact with the blocking wall 130, its surface is made of a relatively soft material to prevent damage or damage to the blocking wall 130 when in contact. It is preferably formed of a hard material on the inside. In addition, the exposed portion of the rotating body 154 is shown in the drawing as a bolt head shape, but various other means may be applied. Accordingly, the shape of the rotating tool 202, which will be described later, is also configured in a box-shaped shape so that the bolt head can be inserted and fixed.

Meanwhile, the depression 132 formed in the blocking wall 130 allows the blocking wall 130 to stand upright because the protruding member 155 is inserted. That is, the protruding member 155 is made of a hard material. Therefore, it is supported on the side of the blocking wall 130 and can be erected. Additionally, the recessed portion 132 and the protruding member 155 are formed to be symmetrical top and bottom. To be precise, the protruding member 155 is not symmetrical between the top and bottom, but is arranged with a phase difference of 270 degrees. Therefore, the barrier wall 130 can be used by combining it with the side of the partition wall 120 without distinguishing between the left and right sides or the top and bottom.

Meanwhile, as will be discussed in the operating state described later, a separate adjustment tool 200 may be further provided in order to stably raise and lower the blocking wall 130 upward and downward.

Referring to the drawings, FIG. 7 is a perspective view schematically showing an adjustment tool for opening and closing a blocking wall constituting a fence unit, and FIG. 8 is a cross-sectional view showing the interior of FIG. 7.

Referring to FIGS. 7 and 8, the adjustment tool 200 includes a pair of insertion rods 201 each inserted into the insertion holes 157 formed at the upper and lower portions of the rotating body 154 of the partition 120, A rotating tool 202 provided between the insertion rods 201 and coupled to the rotating body 154 to rotate the rotating body 154, a power transmission element 203 that transmits power to the rotating tool 202, It consists of a housing 204 that surrounds the power transmitter 203 from the outside, and a handle 205 provided on the outside of the housing 204 that transmits power to the power transmitter 203 by rotation.

Before explaining, the part where the insertion rod 201 is located will be described as the front side, and the opposite will be described as the back side.

Looking specifically, the handle 205 is configured to protrude outside the rear of the housing 204, and the end of the handle 205 is located in the inner central part of the housing 204. A gear is coupled to the end, and the gear is also coupled to the power transmission body 203 so as to engage with the gear. That is, as shown in FIG. 8, the end of the handle 205 and both front ends of the power transmitter 203 are toothed in the form of a bevel gear so that the power generated by rotation of the handle 205 is transmitted to the power transmitter 203. The rotation tool 202 is rotated. For this purpose, the rear end of the rotary tool 202 and both ends of the power transmission body 203 also have bevel gears engaged with each other, so that the power transmitted from the handle 205 is transmitted to the rotary tool 202, so that the rotary tool 202 It is rotated.

Meanwhile, the sawtooth 153 in FIG. 4 is shown as being formed on the left side of the moving body 152, but considering the rotation direction when combined with the adjustment tool 200, it is located on either the left or right side of the moving body 152. Can be formed on one side

Hereinafter, we will look at the use status of the prefabricated safety fence that is easy to assemble and disassemble according to the present invention configured as described above.

Figure 6 is a diagram for explaining the operating state of the prefabricated safety fence that is easy to assemble and disassemble according to the present invention.

First, as shown in FIG. 1, when the fence units 100 are adjacent to each other to form a fence, the barrier wall 130 must be opened for materials and workers to enter the workplace. In this case, part or all of the blocking wall 130 can be opened using the manipulation unit 150.

Explaining again with reference to FIG. 4, as shown in FIG. 4, a temporary wall is formed in the shape of a fence, and from the inside of the fence, various products that can be promoted toward the outdoors, product promotion through displays, etc. When internal interior construction is in progress, the blocking wall 130 must be temporarily opened to allow necessary items to enter the interior or workers to enter and exit.

At this time, as shown in FIG. 6, when the upper rotating body 154 is rotated clockwise with respect to the partition wall 120, the moving body 152 rises, and at this time, the protrusion located on the right side with respect to the partition wall 120 The blocking wall 130, where the member 155 is inserted into one end, also rises at the same time. At this time, when the blocking wall needs to be completely removed, the worker pushes up the blocking wall 130 from the lower part of the blocking wall 130 and pulls the blocking wall 130 from the upper part to remove the blocking wall. At this time, since the protruding member 155 is made of a soft material, partial forcible removal of the barrier wall 130 can be easily performed without damaging the barrier wall 130 and the partition wall 120.

Conversely, when the lower rotating body 154 is rotated clockwise with respect to the partition wall 120, the moving body 152 rises, and at this time, the protruding member 155 located on the left with respect to the partition wall 120 is at one end. The inserted barrier wall 130 also rises at the same time.

In this way, when the blocking wall 130 needs to be raised through stable rotation of the rotating body 154, the rotating body 154 is rotated using the adjustment tool 200 shown in FIGS. 7 and 8. That is, the reason why a separate adjustment tool 200 is provided to separately raise and lower the blocking wall 130 is to raise and lower the blocking walls 130 adjacent to each other to the same height. In the present invention, since the barrier walls 130 provided on both sides with the barrier wall 120 at the center are composed of one fence unit 100, the barrier wall 130 on the left side of FIG. 6 is intact and the barrier wall on the right side is It is configured so that only (130) can be raised. In other words, when using the adjustment tool 200, the blocking wall 130 has a structure in which every other block can be raised and lowered. When raising and lowering only one blocking wall 130, one blocking wall 130 can be raised and lowered by rotating the rotating body 154 using a separate wrench, etc. However, in this case, the power may not be transmitted smoothly. This is because, in this case, the blocking wall 130 may not be raised in an upright position. Therefore, in order to raise and lower the blocking wall 130 stably and vertically, the insertion rod 201 is inserted into the insertion hole 157, and at the same time, when the front end of the rotating body 154 is inserted into the rotating tool 202, it is adjusted. The tool 200 is temporarily in a fixed form. Afterwards, when the handle 205 is rotated, this rotational power is transmitted to the rotary tool 202 and the rotating body 154 is rotated to raise or lower the blocking wall 130, thereby opening and closing the blocking wall 130. will be.

After partially raising or removing the blocking wall 130 as described above and completing the input of manpower and materials, the rotating body 154 is rotated again in the opposite direction to the upward movement to lower the blocking wall 130. It blocks the space from the workplace.

Hereinafter, we will look at a modified example of the prefabricated safety fence that is easy to assemble and disassemble according to the present invention configured as described above.

Figure 9 is a diagram showing a modified example of Figure 2.

Referring to Figure 9, the prefabricated safety fence that is easy to assemble and disassemble according to the present invention has all the same configurations as the above-described embodiment. However, the difference is that the blocking walls 130 are arranged in a zigzag shape rather than in a series adjacent to each other. This means that when the fence units 100 are arranged in series adjacent to each other, it is not easy to remove the barrier wall 130, so the work can be arranged in a zigzag manner for efficiency. In addition, since the blocking wall 130 can be easily removed even when necessary goods are delivered or workers enter or leave the interior, the blocking wall 130 can be arranged in a zigzag shape. The zigzag arrangement of the blocking walls 130 is a method used when the work space is relatively wide, and in the case of general work, the blocking walls 130 are arranged in series as in the embodiment of FIG. 2.

The embodiments of the prefabricated safety fence that are easy to assemble and disassemble of the present invention described above are merely illustrative, and those skilled in the art should not change the technical idea or essential features of the present invention. You will be able to understand that it can be easily transformed into another specific form. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. something to do.

100: fence unit 110: base
111: horizontal rail 112: vertical rail
113: Combiner
120: partition wall 130: barrier wall
131: Coupling member 132: Recessed portion
150: control unit 151: receiving unit
152: moving body 153: sawtooth
154: rotating body 155: protruding member
156: rotation axis 157: insertion hole
200: Adjustment tool 201: Insertion rod
202: Rotating tool 203: Power transmitter
204: Housing 205: Handle

Claims (4)

It is a facility in which a plurality of fence units (100) are adjacent to each other to form a fence to be temporarily installed for a certain period of time to decorate the exhibition space and to divide the space to be used,
A base 110 installed on the floor and formed with one or more horizontal rails 111 and vertical rails 112;
A partition 120 whose lower end is inserted into the vertical rail 112; and
It is perpendicular to the partition wall 120 and includes a blocking wall 130 on which a coupling member 131 protrudes so as to be inserted into the horizontal rail 111.
An operating unit 150 is provided inside the upper and lower portions of the partition wall 120, and when the operating unit 150 is operated, the blocking wall 130 is configured to rise and fall,
The operating unit 150,
A moving body 152 embedded in the receiving portion 151 formed on the inside of the partition wall and having teeth 153 formed on one side of the inner wall;
A rotating body 154 formed on the outside to engage with the teeth 153, rotated at the center by a rotating shaft 156, and exposed to the front surface of the partition 120; and
It is formed to protrude on the outer surface of the rotating body 154, is inserted into the recessed portion 132 formed at one end of the blocking wall 130, is moved by the moving body 152, and is configured to be symmetrical from top to bottom. A prefabricated safety fence that is easy to assemble and dismantle, comprising a protruding member (155). delete According to claim 1,
It further includes an adjustment tool 200 for moving the blocking wall 130 coupled to both sides of the partition wall 120 up and down,
The adjustment tool 200 is,
a pair of insertion rods 201 each inserted into the insertion holes 157 formed at the upper and lower portions of the rotating body 154 of the partition 120;
a rotation tool 202 provided between the insertion rods 201 and coupled to the rotation body 154 to rotate the rotation body 154;
A power transmitter 203 that transmits power to the rotating tool 202;
A housing 204 surrounding the power transmission element 203 from the outside; and
A prefabricated safety fence that is easy to assemble and dismantle, characterized in that it is provided on the outside of the housing 204 and includes a handle 205 that transmits power by rotation to the power transmitter 203. According to claim 1,
The blocking wall 130 is,
A prefabricated safety fence that is easy to assemble and disassemble, characterized by being arranged in a row adjacent to each other or alternately in a zigzag shape.

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