KR20040110593A - Method of Producing Gabion Mesh - Google Patents

Abstract

PURPOSE: A method for manufacturing a Gabion mesh is provided to increase the productivity by automatically manufacturing the Gabion mesh without a loss of over 20 to 30 minutes wasted in conventional method that needs, at least, over 2 or 3 experienced people according to the size of the Gabion mesh in partly automatic manufacturing process. CONSTITUTION: Two lengthwise iron wire(A,B) forms a pair. If the lengthwise iron wires are rotated in one direction, a spiral twisting structure at a front portion is formed. Then, one horizontal iron wire(C) is inserted horizontally into the spiral twisting structure at the front portion. Then, the lengthwise iron wire is rotated in the direction which is opposite to the above direction to form a spiral twisting structure at a rear portion, thereby forming one dual twisting structure body. The dual twisting structure body is continuously and repeatedly formed.

Description

Method of Producing Gabion Wire Mesh {Method of Producing Gabion Mesh}

The present invention relates to a method for producing a Gabion wire mesh well known as a gabion, and more particularly, to a method of manufacturing a Gabion wire mesh in which two vertical wires and one horizontal wire forms an organic spiral twist structure.

Gabion is generally known as a gabion, and it is made by bending a special galvanized iron wire or two wires coated with PVC on it to form a rectangle, or by twisting two wires in duplicate to form a hexagon, This is a unit of the basic mesh structure. Among them, hexagonal gabion has a high strength and solid characteristics compared to square gabion because the two strands of iron wire form a tightly twisted structure. Therefore, hexagonal gabion is more preferred than rectangular gabion today.

Hexagonal Gabion is shown in Figure 1, the two wires form a twisted structure with each other, then split each other to form the same twisted structure again with other wires adjacent to it, again splitting with each other the previous wire By forming a twisted structure with another iron wire and repeating the above process again and again, as a result, the basic units of the hexagon are formed in the front, rear, left, and right directions, and these basic units of the hexagon are continuous with each other in the front, rear, left, and right directions. By forming a connection, a large iron mesh gabion is formed. In this case, the two iron wires can be described by dividing the upper steel wire (A) guided by the upper die (S) and the lower wire wire (B) guided by the lower die slider in the manufacturing method.

Moreover, the product which improved the conventional hexagonal gabion is shown in FIG. The improved product divides the size of the hexagon into half by inserting a separate horizontal wire (C) into the twisted structure of the upper and lower wire wires (A) and the lower wire wires (B), thereby filling a smaller sized filler. I would have to.

Today, this type of hexagonal gabion is used for various types of applications by using a rectangular mesh structure. The most used field is the field used as civil engineering structure. In this field, if there is a risk of collapse and falling rocks, the Gabion slope (ordinary surface) is formed to protect the cut surface of the soil, or when the retaining wall of a road or cliff is to be assembled, the Gabion wire mesh is assembled to the space 100mm-300mm. Cobblestones and waste-rock (crushed stone) are filled and the retaining wall is built up, or when scour phenomena occur or are likely to occur in the dam or river structure, the Gabion wire mesh is put in the filling material to prevent dam or river scour. It is also used for. In particular, when retaining walls are formed as civil structures, since the space filling material of the retaining wall is a pebble or crushed stone, the groundwater flowing from the ground can naturally flow between the space filling material, thereby becoming a natural drainage, and thus the wall surface of the retaining wall. Since there is no room for water pressure inside, there is an advantage to prevent the collapse due to water pressure. In this respect, the Gabion retaining wall is evaluated to be superior to other civil structures. In addition, the civil engineering structure using the Gabion wire mesh is filled with the surrounding soil and the like gradually in the empty space between the filling material, and based on it provides a soil and environment for the surrounding plants to germinate and grow, There is an advantage in terms of eco-friendliness over similar-purpose structures such as concrete retaining walls and stone slabs. Therefore, it is an environmentally friendly product and is widely used as a civil engineering structure in developed countries such as Europe.

However, even in the case of such an eco-friendly gabion wire mesh, there are some fatal disadvantages due to the limitations of the basic structure.

First, in the conventional method of manufacturing a Gabion wire mesh, the upper and lower sliders continuously rotate in only one direction, so that the twist structure is not released at all, and this phenomenon continues during the manufacturing process of Gabion Wire Mesh. Since it accumulates, in order to solve this problem, it is necessary to cut short the length of the graft iron wire A induced in the glyph slider. Today, the upper steel wire (A) is called a spring steel wire, which is used to cut significantly shorter than the lower steel wire (B).

In addition, the manufacturing method of the conventional Gabion wire mesh is not fully automatic process, only intermittent automatic process is possible. In the conventional Gabion manufacturing method, since the length of the upper barbed wire A is cut short and used, when a spiral twist structure is formed by using the upper barbed wire A and the lower barbed wire B, it is common. This is because the joint work has to be carried out several times until it completely consumes the undercarriage, and this joint work must be performed by hand. Therefore, in producing a conventional gabion wire mesh, there was a disadvantage that the manufacturing process can not be fully automated.

In addition, the conventional method of manufacturing Gabion wire mesh has a disadvantage that requires skilled workers. In order to manufacture a conventional Gabion wire mesh, it is necessary to re-bond the graft iron wire (A) to the glyph slider in the middle, and this coupling operation is difficult because the automatic process is virtually difficult, and requires the touch of skilled workers .

As such, the conventional method of manufacturing Gabion wire mesh, which is common and commonly used today, has a disadvantage in that its productivity is very low. This manufactures conventional Gabion wire mesh, whose manufacturing process relies on intermittent and partial automatic processes, and requires at least two or three skilled workers, depending on the size of Gabion wire mesh, This is because at least 20 to 30 minutes of time was spent for each bonding process.

Accordingly, it is an object of the present invention to provide a method of manufacturing a new type of Gabion wire mesh that can overcome the problems in the conventional method of manufacturing Gabion wire mesh and fully automate it.

1 is a partially enlarged view of a conventional hexagonal gabion and its basic unit,

2 is an enlarged view of an improved type Gabion and its basic unit reinforced with a vertical iron wire in the conventional hexagonal Gabion,

Figure 3 is a view showing an exemplary spiral double twist structure of the Gabion unit prepared by the manufacturing method of the present invention,

4 is a view of a Gabion wire mesh in which the positions of two vertical wires and one horizontal wire in arbitrary letters (n, k) to explain the manufacturing method of the present invention,

5 is a view conceptually illustrating a manufacturing apparatus for manufacturing a gabion wire mesh according to the present invention.

♠ Explanation of symbols for the main parts of the drawings.

10: combined structure for Gabion unit, 12: first half spiral twist structure,

14: late spiral twist structure, 20: upper slider

30: lower slider, A: upper steel wire,

B: lower wire, C: vertical wire,

The present invention is an improvement of the conventional method for manufacturing Gabion wire mesh, and relates to a new concept manufacturing method that can fully automate the entire system.

The method for manufacturing a Gabion wire mesh according to the present invention basically performs a step of forming a spiral double twist structure including two longitudinal wires (A) (B) and one horizontal wire (C), such spiral double twist structure It includes the step of performing sequentially and successively repeated.

In the present invention, the forming step of the spiral double twisted structure is a pair of upper iron wire (A) and the lower iron wire (B) to form a pair, then they rotate with each other in one direction to form a spiral twist structure of the first half Steps; The barbed wire (C) is sandwiched between the upper barbed wire (A) and the lower barbed wire (B) in the transverse direction with respect to the traveling direction of the first half spiral twisted structure, whereby the above barbed wire (A) and the above Forming a turning point to be converted in the opposite direction with respect to the traveling direction of the bottom bar wires (B) thereof; In addition, the upper steel wire (A) and the lower steel wire (B) includes a step of forming a rear half spiral twist structure while rotating in the opposite direction of the one direction with the horizontal wire (C) as a center line.

In the present invention, the helical double twisted structure is a pair of two vertical wires form a pair of spiral twisted structure of the spiral direction of the first half twisted structure and the second half twisted structure around the one horizontal wire Refers to a structure in which spiral directions are formed opposite to each other.

The method for manufacturing a Gabion wire mesh according to the present invention forms a double twist structure by forming the rotation direction of the first half spiral twist structure and the rotation direction of the second half spiral twist structure opposite to each other by the horizontal wire, and the double twist structure After forming, it is characterized in that the upper and lower sliders for inducing vertical iron wires can be returned to their original positions.

In addition, the manufacturing method of the Gabion wire mesh according to the present invention, after manufacturing the first double twisted structure, the second double according to the direction of movement of the upper and lower sliders to guide the longitudinal wire (A) (B) The position of the twisted structure may be different, and after the second double twisted structure is manufactured, the third double twisted structure of the third double twisted structure according to the moving direction of the upper slider and the lower slider, which guides the longitudinal wires (A) and (B), Although the positions may be different from each other, it is intended to be clear that these are only various embodiments including the core technical spirit of the present invention.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in more detail. However, the accompanying drawings are only intended to describe the technical spirit of the present invention in more detail, and the technical spirit of the present invention is not limited thereto.

Figure 3 is a view showing a spiral double twist structure 10 of the Gabion unit produced by the manufacturing method of the present invention by way of example, Figure 4 is a longitudinal wire (A) (B) to explain the manufacturing method of the present invention And a view of the Gabion wire mesh 100 in which the position of the horizontal wire C is represented by arbitrary letters (n, k), and FIG. 5 is a conceptual diagram of a manufacturing apparatus for manufacturing Gabion Wire Mesh 100 according to the present invention. This is described.

First, referring to FIG. 3, in order to more clearly understand the manufacturing method of the present invention, the spiral double twist structure 10 of the Gabion unit, which is the basis of the present invention, will be described.

In the present invention, the spiral double twist structure 10 of the Gabion unit is a spiral twist structure (12) of the first half twisted while forming a pair of upper wire (A) and lower wire (B) in one pair and rotate in one direction It includes. At this time, the upper iron wire (A) refers to the longitudinal wire to be fitted to the upper slider of the Gabion wire mesh manufacturing apparatus, the lower iron wire (B) is a longitudinal iron wire coupled to the lower slider of the manufacturing apparatus By reference, they mean relative wires that are in the same position as each other. In the present invention, the rotation in one direction may be clockwise or counterclockwise. In this case, when rotating in the one direction, the angle of rotation is 180 ^° based on the case where the upper form iron (A) and the lower form iron wire (B) start in a state of standing upright with respect to the ground. It is preferable to set it as an integer multiple ((pi) * p, p is an integer other than 0), More preferably, it is a case where said integer p is 10 or less. In addition, the first half spiral twist structure 12 is the number of the twist structure is determined according to the number of revolutions (p) of the upper iron wire (A) and the lower iron wire (B) is rotated in a semicircle (180 ^o ) You lose.

In the present invention, the helical double twist structure 10 of the Gabion unit includes a horizontal wire (C) fitted in the transverse direction with respect to the traveling direction of the first half spiral twist structure 12, which is the upper girder wire It is located between (A) and said lower barbed wire (B). Therefore, the horizontal wire (C) provides a branch point for the upper iron wire (A) and the lower iron wire (B) to proceed after the switch in the opposite direction for each travel direction. This is because the horizontal wire of the conventional Gabion unit simply serves as a reinforcing means of the Gabion wire mesh, the horizontal wire (C) in addition to such a function also contributes to the automation of the manufacturing method as confirmed in the manufacturing method below, Remarkably different.

In the present invention, the helical double twisted structure 10 of the Gabion unit is the upper iron wire (A) and the lower iron wire (B) as the center line of the horizontal iron wire (C) thereafter the opposite of the one direction The rear half spiral twist structure 14 is formed while rotating in the direction. Therefore, when the first half spiral twist structure 12 rotates in a clockwise direction, the second half spiral twist structure 14 rotates in a counterclockwise direction, and the first half spiral twist structure 12 is in a counterclockwise direction. When rotating, the latter half spiral twist structure 14 rotates clockwise. In this case, the angle of rotation of the latter half spiral twist structure 14 is in the state in which the traveling direction is completely shifted about the horizontal wire C, and the upper wire A and the lower wire ( B) the 180 ^o integral multiple of when, based on the case where from an upright state with respect to each other, the ground-decided to be preferable, and more preferable that {π * (q), only q is non-zero constant} is the Is the case where the integer q is 10 or less. In this case, more preferably, the rotation speed p of the first half spiral twist structure 12 and the rotation speed q of the second half spiral twist structure 14 are equal to each other.

As such, in the spiral double twist structure 10 for the Gabion unit, the rotation direction of the first half spiral structure 12 and the rotation direction of the second half spiral structure 14 are formed opposite to each other by the horizontal wire C. There is a characteristic in that point.

FIG. 4 is a diagram of a Gabion wire mesh 100 in which the positions of the two vertical wires A and B and the horizontal wire C are displayed using arbitrary letters n and k, respectively. The preferred embodiment of the invention is well described.

5 is a view conceptually illustrating a manufacturing apparatus for manufacturing the gabion wire mesh 100 according to the present invention. The manufacturing method according to the present invention can be realized by applying a conventional manufacturing apparatus used in the related art. Therefore, detailed description of the mechanical part of the manufacturing apparatus will be omitted in the specification of the present invention.

Method for producing a Gabion wire mesh according to the present invention is 1). forming a k-th spiral double twist structure (10 _k ) using an n-th upper bar (A _n ), an n-th lower bar (B _n ), and a k-th horizontal bar (C _k ); 2). The k + 1 th spiral double twist structure ( _n ) using the n th top wire (A _n ), the n ± 1 th bottom wire (B _{n ± 1} ) and the k + 1 th horizontal wire (C _{k + 1} ). 10 _{k + 1} ); 3). And performing the above-mentioned various steps continuously and continuously repeatedly.

In this case, n denotes a positional relationship between the upper and lower iron wires (A) and the lower iron wires (B), and means a positive integer including 0, where k is the horizontal iron wire ( C) is to represent the positional relationship with each other, and means a positive integer including 0.

In the present invention, the forming step of the k-th spiral double twisted structure (10 _k ) is the n-th upper iron wire (A _n ) and the n-th lower iron wire (B _n ) paired with each other, in that state in one direction Rotating to form the first half spiral twist structure. This is easily accomplished by the manufacturing apparatus according to FIG. 5. According to FIG. 5A, the n-th upper iron wire A _n is guided to the n-th upper slider 20 _n of the Gabion wire mesh manufacturing apparatus, and the n-th lower iron wire B _n is the n-th lower iron wire. Guided to the slider 30 _n , each of the other upper and lower steel wires are also guided to the respective upper and lower sliders. In addition, FIG. 5A illustrates the case where they start from slightly different positions. In the present invention, the n-th upper slider 20 _n and the n-th lower slider 30 _n move relative to each other to be paired with each other, and rotate in one direction in that state to form a first half spiral twist structure. To form. At this time, one direction of the above is a case that proceeds in a clockwise direction, of course, it can be progressed in the opposite direction. On the other hand, the upper slider 20 _n and the lower slider 30 _n can use a conventional manufacturing apparatus, and in the rotational movement therebetween, it can be based on a conventional control method, so that the mechanical A detailed description of the configuration, the method of combining the wires and the control method will be omitted.

In the present invention, the forming step of the k-th spiral double twist structure (10 _k ) is the k-th horizontal iron wire (C _k ) is the n-th upper iron wire (A _n ) and the n-th lower iron wire of the first half spiral twist structure ( B _n ) is inserted in the transverse direction between (see Fig. 5b). In this step, it is important that the horizontal wire C _k is fitted in the transverse direction with respect to the traveling direction of the first half spiral twist structure. Because, the horizontal wire (C _k ) provides a branch point to switch the direction of progress of the upper iron (A _n ) and the lower iron (B _n ), and the horizontal iron (C _k ) This is because the first half spiral twist structure and the second half twist structure are symmetrical with each other and at the same time prevent them from being released from each other.

In the present invention, the forming step of the k-th spiral double twist structure (10 _k ) is the n-th upper iron wire (A _n ) and the n-th lower iron wire (B _n ) is the k-th horizontal iron wire (C _k ) With the center line as the center line to the reverse direction again in the opposite direction to form a second half spiral twist structure. This can be easily achieved by rotating the n th upper slider 20 _n and the n th lower slider 30 _{n in} the opposite direction while the k th horizontal wire C _k is fitted. . The n-th upper slider 20 _n and the n-th lower slider 30 _n rotate once in the opposite direction to form the latter half spiral twisted structure, and then release from each other to move left and right, respectively. In this state, each of them is paired with another slider (see FIG. 5C). In FIG. 5, the n th upper slider 20 _n and the n th lower slider 30 _n are separated from each other and returned to the first position. However, in the present invention, the n th upper slider 20 is illustrated. _n ) and the n-th lower slider 30 _n may be separated from each other and may proceed in a direction opposite to the above direction.

Thus, the step of forming the k-th spiral double twist structure 10 _k is completed, and then proceeds to the next step.

In the present invention, the step of forming the k + 1 th spiral double twist structure (10 _{k + 1} ) is the n-th upper slider 20 _n and any one of the lower lower slider (30 _{n ± 1} ) adjacent thereto. Can proceed in pairs. In the present invention, this is not shown in detail in FIG. 5, but according to FIG. 4, the n-th upper slider 20 _n is paired with the n-1 th lower slider 30 _n-1 adjacent thereto. Hints if it is going.

First, when the n-th upper iron wire (A _n ) is paired with the n-1 th lower iron wire (B _n-1 ) adjacent to it. At this time, the n-th upper slider 20 _n moves in a relative motion toward the n-1 th lower slider 30 _n-1 adjacent thereto, and the n-th upper iron wire A _n and _n are moved. The -1 th lower steel wire (B _n-1 ) is paired with each other, in which state the n th upper slider (20 _n ) and the n-1 th lower slider (30 _n-1 ) in one direction As it rotates, it forms a first half spiral twist. After that, the k + 1 th horizontal wire C _{k + 1} is interposed between the n th upper iron wire A _n and the n-1 th lower iron wire B _n-1 in the horizontal direction. Then, the n-th upper slider 20 _n and the n-1 th lower slider 30 _n-1 are arranged in the one direction with the k + 1 th horizontal wire line C _{k + 1} as the center line. The reverse rotation in the opposite direction forms the latter half spiral twist.

Next, the case in which the n-th upper iron wire A _n is paired with an n + 1 th lower iron wire B _{n + 1} adjacent thereto is as follows. At this time, the n th upper slider 20 _n moves in a relative motion toward an n + 1 th lower slider 30 _{n + 1} adjacent to the n th upper slider (A _n ) and the n th upper linear wire (A _n ). The +1 th lower bar (B _{n + 1} ) is paired with each other, and the n th upper slider (20 _n ) and the n + 1 th lower slider (30 _{n + 1} ) are in one direction. As it rotates, it forms a first half spiral twist. After that, the k + 1 st horizontal wire (C _{k + 1} ) is sandwiched between the n th upper iron wire (A _n ) and the n + 1 th lower iron wire (B _{n + 1} ) in the horizontal direction, Again, the n th upper slider 20 _n and the n + 1 th lower slider 30 _{n + 1} are opposite to each other in one direction with the k + 1 th horizontal wire C _{k + 1} as a center line. While rotating in reverse to form the latter spiral twisted structure.

As a result, the step of forming the k + 1 th spiral double twist structure 10 _{k + 1 according} to the present invention is completed, and the next step of the k + 2 th spiral double twist structure 10 _{k + 2} is completed. It can be transferred to the forming step.

In the present invention, the forming step of the _{k + 2} helical double twisted structure (10 _{k + 2} ) is the n-th upper iron wire (A _n ) is a relative movement in any direction to one pair with any lower iron wire It will vary slightly depending on whether you proceed. However, the forming step of the k + 2 th spiral double twist structure 10 _{k + 2} is the forming step of the k th spiral double twist structure 10 _k and the k + 1 th spiral double twist structure described above. It can be achieved by performing the forming step of the kink structure 10 _{k + 1} continuously and repeatedly. Therefore, the description of this step will be duplicated and will be omitted.

In addition, the method for manufacturing a Gabion wire mesh according to the present invention is to be able to manufacture the gabion wire mesh 100 of the net form as a whole by repeating and continuously performing the above series of processes.

As described above, in the manufacturing method of the Gabion wire mesh according to the present invention by performing the rotation direction of the first half twist structure and the rotation direction of the second half twist structure opposite to each other, as a whole, the upper upper slider 20 and the lower lower slider ( 30) will result in the original position to be restored. Therefore, when using the manufacturing method according to the present invention, there is no need to shorten the length of the upper iron wire (A) guided to the upper slider 20 as in the prior art, the lower iron wire guided to the lower mold slider ( There is an advantage that can be used to form the same as the length of B).

In addition, the manufacturing method of the Gabion wire mesh according to the present invention can use the upper and lower wires of the same length, and after forming at least one spiral double twist structure, the upper and lower sliders of the manufacturing apparatus is the original original Since it is reduced to the position, there is an advantage that can realize a fully automated system by performing this continuously and repeatedly.

In addition, when manufacturing the Gabion wire mesh using the method of manufacturing the Gabion wire mesh according to the present invention, it can be automated to significantly improve the productivity, moreover, the same length of the upper and lower wires in the spiral length by the same tensile force Since it is possible to form a twisted structure of the wire mesh structure can be made uniform, there is an advantage that can improve the product quality.

In the above description of the method for producing a Gabion wire mesh according to the present invention in detail, but this is only for describing the most preferred embodiment of the present invention, the present invention is not limited thereto, the scope of the appended claims Determined and defined. In addition, anyone of ordinary skill in the art will be able to make various modifications and imitations by the description of the specification of the present invention, but it will be apparent that this is also outside the scope of the present invention.

Claims (7)

One). Basically forming a spiral double twist structure including two longitudinal wires (A) and (B) and one horizontal wire (C); 2). Method for producing a gabion wire mesh, characterized in that it comprises the step of performing the helical double twist structure sequentially and successively repeated. According to claim 1, wherein the forming step of the spiral double twist structure Iii). Forming a helical twisted structure in the first half by pairing the upper and lower wires A and B together with one another; Ii). A horizontal wire (C) is fitted between the upper iron wire (A) and the lower iron wire (B) in the transverse direction with respect to the traveling direction of the first half spiral twist structure; Iii). And forming the latter half spiral twist structure while the upper wire wire A and the lower wire wire B rotate in the opposite direction in the opposite direction from the horizontal wire C as a center line. How to. According to claim 1 or 2, wherein the forming step of the double helix twist structure The direction of rotation of the first half spiral twist structure and the direction of rotation of the second half spiral twist structure are formed opposite to each other by the horizontal wire to form a spiral double twist structure, and after forming the spiral double twist structure, induce a vertical wire. The upper and lower sliders to return to the original position method. One). forming a k-th spiral double twist structure (10 _k ) using an n-th upper bar (A _n ), an n-th lower bar (B _n ), and a k-th horizontal bar (C _k ); 2). k + 1 helical double twisted structure (10 _k ) using the _nth upper steel wire (A _n ), adjacent n ± 1th lower steel wire (B _{n ± 1} ), and the k + 1th horizontal steel wire (C _{k + 1} ) Forming ₊₁ ); 3). Method of producing a Gabion wire mesh comprising a; step of performing the above-described various steps continuously and continuously. {In this case, n is for indicating the positional relationship in which the upper steel wire (A) and the lower steel wire (B) exists relative to each other, means a positive integer including 0, wherein k is the horizontal wire (C) indicates the positional relationship where they exist relative to each other, and means a positive integer including 0.} The method of claim 4, wherein the forming of the k-th spiral double twist structure (10 _k ) is Iii). The n-th upper iron wire (A _n ) and the n-th lower iron wire (B _n ) can be paired with each other, and then rotate in one direction to form the first half spiral twisted structure. Ii). A k th horizontal wire (C _k ) may be inserted in the transverse direction between the n-th upper iron wire (A _n ) and the n-th lower iron wire (B _n ) of the first half spiral twist structure, Iii). The n-th upper iron wire (A _n ) and the n-th lower iron wire (B _n ) is rotated again in the opposite direction of the one direction with the k-th horizontal iron wire (C _k ) to form a rear half spiral twist structure How to include. {In this case, n is for indicating the positional relationship in which the upper steel wire (A) and the lower steel wire (B) exists relative to each other, means a positive integer including 0, wherein k is the horizontal wire (C) indicates the positional relationship where they exist relative to each other, and means a positive integer including 0.} 5. The method of claim 4, wherein the forming of the k + 1 th spiral double twist structure 10 _{k + 1} is performed. Iii). The n th upper wire A _n is paired with the n + 1 th lower iron wire B _{n + 1} adjacent thereto, and in the state, the paired upper iron wire A _n and the lower iron wire (B _{n + 1} ) can be rotated in one direction to form a first half spiral twist structure, Ii). A k + 1 th horizontal wire (C _{k + 1} ) may be inserted in the transverse direction between the pair of upper and lower iron wire (A _n ) and the lower iron wire (B _{n + 1} ) of the first half spiral twist structure, Iii). The paired upper barbed wire (A _n ) and lower barbed wire (B _{n + 1} ) are rotated again in the opposite direction to the one direction with the k + 1th horizontal bar wire (C _{k + 1} ) as the center line, and the latter half spiral. Forming a twisted structure. {In this case, n is for indicating the positional relationship in which the upper steel wire (A) and the lower steel wire (B) exists relative to each other, means a positive integer including 0, wherein k is the horizontal wire (C) indicates the positional relationship where they exist relative to each other, and means a positive integer including 0.} 5. The method of claim 4, wherein the forming of the k + 1 th spiral double twist structure Iii). The n-th upper iron wire (A _n ) is paired with the n-1 th lower iron wire (B _n-1 ) adjacent thereto, and in the state, the paired upper iron wire (A _n ) and lower iron wire (B). _n-1 ) can rotate in one direction to form the first half spiral twist structure, Ii). A k + 1 th horizontal wire (C _{k + 1} ) may be inserted in the transverse direction between the upper and lower iron wire (A _n ) and the pair of lower iron wire (B _n-1 ) of the first half spiral twist structure, Iii). The paired upper helical wires (A _n ) and lower helical wires (B _n-1 ) are rotated again in the opposite direction to the one direction with the k + 1 th horizontal wire (C _{k + 1} ) as the center line and the latter half spiral. Forming a twisted structure. {In this case, n is for indicating the positional relationship in which the upper steel wire (A) and the lower steel wire (B) exists relative to each other, means a positive integer including 0, wherein k is the horizontal wire (C) indicates the positional relationship where they exist relative to each other, and means a positive integer including 0.}