JPH08332543A - Welded metal net - Google Patents

Abstract

PURPOSE: To fold up a net around iron wires by connecting sheet like metal nets each other, in which vertical wires and horizontal wires are orthogonally crossed and geometrically arrayed and intersecting points are welded, at the end part of vertical wire and/or horizontal wires with iron wires. CONSTITUTION: Vertical wires and horizontal wires are orthogonally crossed/ geometrically arrayed and intersecting points are resistance welded, thus a sheet like metal net is constructed. Sheet like metal nets each other are connected at the end part of each vertical wire and/or each horizontal wire with iron wires, the connected net can be folded up to the dimension of one sheet of sheet like metal net around iron wires. Accordingly, the equipment, transporting method, execution of work and storage place same as conventional ones are used, by spreading folded up one at execution of work, desired product dimension is easily obtained, improvement of work efficiency and working environment are achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welded wire net mainly used for a concrete structure and its reinforcement in construction related to civil engineering and construction. The present invention relates to a large-sized sheet-like welded wire mesh that is used by unfolding.

[0002]

2. Description of the Related Art Welded wire mesh has the effect of increasing the strength of concrete, so it is widely used in prefabricated construction, construction related to concrete panels and water tanks, and civil engineering related to concrete paved roads, revetments, bridge decks and runways. It is used.

Further, in order to cope with cost increase due to labor shortage and material cost increase, a welding wire mesh is often used in civil engineering and construction work as a means for saving labor in working processes and improving work efficiency.

Conventionally, the welding wire net, particularly the sheet-like welding wire net, is limited in terms of the capability of the manufacturing machine and the transportation surface of the manufactured welding wire net, and also has a convenient carry-in space around the construction site. There was a limit to the size of dimensions. That is, the maximum size of the sheet-shaped welded wire mesh is 3000 mm in width.
× The length was about 7,000 mm.

On the other hand, since the roll-shaped welded wire mesh is formed by winding a sheet into a cylindrical shape, the length can be increased in this case. However, as for the width, there is a limitation on the maximum size as in the case of the conventional sheet-shaped welded wire mesh. Further, the roll-shaped welded wire mesh has poor work efficiency when it is wound in a cylindrical shape, or when it is changed from a cylindrical shape to a flat shape in the case of construction, and in addition, the points where electric resistance welding is performed may peel off.

Therefore, a sheet-like welded wire mesh having a small size is laid out, and a large number of connecting parts are required for that purpose, and butt welding or bending is performed at the construction site, so that work efficiency is improved. It could be extremely low. Further, it may be a problem in terms of work environment.

As a method for manufacturing a sheet-shaped welded wire mesh, for example, a method for manufacturing a wire mesh by welding, which is a method of incorporating a bending step of an end portion of the welded wire mesh into a welding step of the welded wire mesh, is disclosed in Japanese Patent Publication No. 56-20939. Proposed. Further, Japanese Patent Publication No. 4-75100 discloses a method of plastically deforming a welded wire mesh standard panel prepared in advance, as a “method for manufacturing a welded wire mesh panel for a fence”. However, the sheet-shaped welded wire net targeted by the methods proposed in the above-mentioned publications does not exceed the conventional product size range. Therefore, by using a sheet-shaped welded wire net having a large product size, it has not been possible to sufficiently meet the demand of users who want to improve the work efficiency and further improve the work environment.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above situation, and since the size of each sheet-shaped welded wire net constituting the product welded wire net is the same as that of the conventional one, the manufacturing machine has a high capacity. Of the sheet-shaped product of the desired size easily by expanding the wire mesh at the time of on-site construction, without being affected by the restrictions on the surface and product transportation, and the space around the construction site. An object of the present invention is to provide a sheet-like welded wire mesh that can be folded and that can contribute to both improvement of working efficiency and working environment.

[0009]

The gist of the present invention is the following welded wire mesh.

That is, a sheet-like welded wire mesh produced by geometrically arranging vertical lines and horizontal lines orthogonally and electrical resistance welding at intersections is used to form iron wires at the ends of each vertical line and / or horizontal line. It is a welded wire mesh characterized by being connected by.

[0011]

The above-mentioned welded wire mesh has the same size as that of the conventional sheet-shaped welded wire mesh which constitutes the product welded wire mesh, and the capacity of the manufacturing machine and the restrictions on the product transportation surface, and further around the construction site. It doesn't depend on the loading space. That is, in the welded wire mesh of the present invention, the sheet-shaped welded wire meshes constituting the welded wire mesh are connected to each other by the iron wire at the ends of the vertical lines and / or the horizontal lines. It can be folded to the size of a wire-welded wire mesh, and the space around the construction site can be small with the same equipment and transportation method as before. Furthermore, at the time of on-site construction, the folded product can be expanded to easily obtain a sheet-shaped product with a desired size, and both work efficiency and work environment can be improved.

In order to connect the sheet-like welded wire meshes with the iron wire at the ends of the respective vertical lines and / or horizontal lines, for example, a jig 1 having a hole for a welded wire mesh joint as shown in FIG. 2 and then, as shown in FIG. 2, a connecting iron wire 2 made of the same material as the iron wire 3 used for the sheet-shaped welded wire mesh may be passed through the hole of the jig 1. The jig 1 with a hole for the welded wire mesh joint described above does not break during folding, unfolding, transportation, etc., and prevents corrosion of the welded wire mesh or jig 1 due to contact of dissimilar metals. In order to achieve this, the material (steel material) of the same material as the iron wire 3 used for the sheet-shaped welded wire net may be used for manufacturing. Further, the sheet-like welded wire meshes are connected to each other by vertical lines and / or
Also, for the iron wire to connect at the end of the horizontal wire, in order to prevent corrosion of the welded wire mesh or the iron wire 2 due to contact of different metals, use the same material (steel material) as the iron wire 3 used for the sheet-shaped welded wire mesh. You can use it to make it.

The jig 1 with a hole for the welded wire mesh joint shown in FIG. 3 has a shaft portion which is perforated as shown by a broken line so that it can be fitted into the end portion of the iron wire in a cap manner. However, even if the machined portion (hole portion) of the jig 1 with a hole for the welded wire mesh joint and the end of the iron wire 3 of the vertical wire and / or the horizontal wire of the welded wire mesh are connected by screwing. good. Further, when connecting the sheet-like welded wire meshes with the iron wire 2 at the ends of their respective vertical lines and / or horizontal lines, by bending the end of the iron wire 3 of the sheet-like welded wire mesh as shown in FIG. It may be used as a hole for. In this case, the jig 1 with a hole for the welded wire mesh joint as described above is not necessary.

As described above, a jig 1 having a hole is attached to each of the two or more sheet-shaped welded wire nets at a position to be connected, or the end of the iron wire 3 of the sheet-shaped welded wire net is bent, Iron wire for connecting sheet-like welded wire mesh 2
A large-sized welded wire mesh (hereinafter, may be simply referred to as “product welded wire mesh”) that is a product is manufactured by connecting with each other. In this case, when transporting the product welded wire mesh, the product welded wire mesh can be folded around the iron wire 2 for connecting the sheet-shaped welded wire mesh as shown in FIG. 5, so that the product welded wire mesh can be carried by a carrier in a small space. As with conventional products, a small storage space around the construction site is sufficient for storage. Furthermore, since the folded welded wire mesh can be easily returned to the original product welded wire mesh having a desired size, the work efficiency can be improved at the time of on-site construction. In addition, the omission of butt welding is not limited to simply omitting the work process, it leads to an improvement of the work environment in that it can eliminate inferior welding work in the field, and eventually it also has the effect of facilitating the securing of workers. .

[0015]

EXAMPLES The present invention will be described below with reference to examples.

Mild steel wire rod SWR specified in JIS G 3505
After drawing M8 at room temperature by a normal method to form a wire for wire mesh SWM-P specified in JIS G3532, sheet-shaped weld wire meshes A and B specified in JIS G3551 are prepared by a normal method.
(All dimensions are width 2000 mm x length 6500 mm)
Was produced. In addition, as shown in FIG. 1, in producing each sheet-shaped welded wire mesh, seven vertical lines and 22 horizontal lines were geometrically arranged orthogonally.

After the sheet-shaped welded wire nets of A and B were individually manufactured, 11 of each of the 22 ends of each of the sheet-shaped welded wire nets forming a pair were heated, and then, as shown in FIG. It was bent into a circular shape. Then, using the above-mentioned welded wire netting wire SWM-P as the iron wire 2 for connecting the welded wire nets, the sheet-like welded wire nets A and B were bent into the eleven sets of circular shapes in the same manner as shown in FIG. Then, the welded wire mesh having a desired size of 4000 mm × 6500 mm was finished by connecting the welded parts. In addition, this sheet-shaped welded wire mesh A
The welded wire mesh of 4000 mm × 6500 mm size in which B and B are connected can be folded around the iron wire 2 for connecting the welded wire mesh as an axis as shown in FIG.

Since the sheet-like welded wire mesh measuring 4000 mm in width and 6500 mm in length has a large size, it exceeds the capability of a conventional manufacturing machine with one sheet, and even if it can be manufactured, it is transported to the construction site. Was impossible. On the other hand, the 4000 mm × 6500 mm welded wire mesh of the present invention is one in which two sheet-shaped welded metal meshes having a width of 2000 mm × a length of 6500 mm are connected, and can be sufficiently manufactured by a conventional manufacturing machine. Since it can be folded around the iron wire for connecting the welded wire mesh as described above, it was possible to carry the product with dimensions of width 2000 mm × length 6500 mm as in the conventional case. Even when carried in on site, it had a width of 2000 mm and a length of 6500 mm when folded, so that it could be carried in a narrow transportation space around the construction site. Furthermore, since the folded welded wire mesh can be easily returned to the product size of 4000 mm × 6500 mm by unfolding, the work time for the bar arrangement work can be halved at the time of on-site construction, and the work efficiency can be greatly improved. .

[0019]

As described above, in the welded wire net according to the present invention, the size of each sheet-shaped welded wire net constituting the product welded wire net is the same as the conventional one, so that the capability of the manufacturing machine and the product transportation can be improved. It is not affected by restrictions in terms of space and the space around the construction site.

That is, since the ends of the vertical lines and / or the horizontal lines of the sheet-like welded wire nets constituting the product welded wire net are connected by the iron wire, it is possible to fold the iron wire as the axis into the conventional size for each sheet. Therefore, the same equipment, transportation method, and storage space around the construction site as before are sufficient.
Further, at the time of on-site construction, it is possible to easily obtain a desired product size by unfolding the folded product, and it is possible to achieve both improvement of work efficiency and improvement of work environment.

[Brief description of drawings]

FIG. 1 is a view showing a welded wire mesh of the present invention manufactured in an example.

FIG. 2 is a view showing an example of a joint portion of the welded wire mesh of the present invention.

FIG. 3 is a view showing an example of a jig with a hole for a welded wire mesh joint.

FIG. 4 is a diagram showing another example of a hole for a welded wire mesh joint.

FIG. 5 is a diagram showing a method for folding a welded wire mesh according to the present invention.

[Explanation of symbols]

 1: Jig with hole for welded wire mesh joint 2: Iron wire for welding wire mesh connection 3: Vertical line (or horizontal line) of welded wire mesh

Claims (1)

[Claims] 1. A vertical line and a horizontal line are orthogonally and geometrically arranged,
A welded wire mesh characterized in that sheet-shaped welded wire meshes manufactured by electric resistance welding at intersections are connected to each other by iron wires at ends of vertical lines and / or horizontal lines.