KR20190087887A - Grating having flange part and method thereof - Google Patents

Abstract

The present invention provides a grating having a flange part, which can greatly improve welding efficiency and process efficiency by forming a flange part provided to surround a part of a bearing bar adjacent to a grating, and a manufacturing method thereof. The grating of the present invention includes a frame, a plurality of bearing bars and a plurality of cross bars.

Description

TECHNICAL FIELD [0001] The present invention relates to a grating having a flange portion and a method of manufacturing the grating.

The present invention relates to a grating having a flange portion and a method of manufacturing the same, and more particularly, to a flange portion capable of greatly improving welding efficiency and process efficiency by forming a flange portion configured to surround a part of a bearing bar adjacent to a grating And a method of manufacturing the same.

Generally, the grating is widely used for the cover of a rainwater drainage channel installed in a road, a residential complex, a subway, etc., and has a plurality of rectangular grid structures in general.

Recently, as the industry develops, it is widely used as floor or stairs of structures such as chemical plants, shipyards, nuclear plants, plant factories, ships and the like.

The grating of the rectangular grating structure is made of a bearing bar and a cross bar. The bearing bars and the cross bars are arranged to divide the rectangular edges of the grating at right angles to each other, and the finished gratings have a rectangular shape because the installation intervals of the two bars are different from each other. Then, the cross bar disposed between the bearing bars is fixed to the bearing bar or the frame by welding.

However, such a welding operation necessarily requires a downward load from the upper part of the grating, so that the grating flows finely during the welding process, so that when the operator manually performs the welding operation, Not only is not easy, but also the welding reliability is deteriorated and productivity is lowered.

Accordingly, there is a need for a technical improvement of a grating capable of improving a production process efficiency in a grating welding process in order to solve the above problems.

Patent Registration No. 90-003386 (1990.05.18) Registration Utility Model Bulletin No. 20-0448098 (Mar. 18, 2010)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art and the technical problems required from the past.

The inventors of the present application have conducted intensive research and various experiments and have found that a grating formed with a flange portion capable of greatly improving welding reliability by forming a flange portion having a shape that surrounds a bearing bar in a grating, Method.

Another object of the present invention is to provide a flange portion capable of greatly improving the process efficiency as compared with a method performed by a conventional worker by performing welding after the flange portion of the grating is wrapped around a part of the bearing bar And to provide a method for manufacturing the same.

According to an aspect of the present invention, there is provided a grating having a flange portion,

A frame in which an inner space is formed;

A plurality of bearing bars disposed at predetermined intervals in an inner space of the frame and having at least one stopper formed therein; And

And a plurality of cross bars seated on the stopper of the bearing bar,

The cross bar may have a structure in which at least one flange portion for coupling with the bearing bar is formed

In one preferred embodiment of the present invention, the flange portion may be formed in a shape to cover at least a part of the upper portion of the bearing bar.

In one preferred embodiment of the present invention, the flange portion may be formed in a shape that does not interfere with the adjacent flange portion.

In one preferred embodiment of the present invention, the welding of the flange portion may be a structure in which the bearing bar is joined in a spot welding manner.

In one preferred embodiment of the present invention, it may further comprise a safety net interposed between the bearing bar and the cross bar.

Here, in one preferred embodiment of the present invention, the safety net may have a plurality of through holes formed at predetermined intervals on the inner surface thereof.

' 형상으로 형성될 수 있다.In one preferred embodiment of the present invention,

≪ / RTI >

According to another aspect of the present invention, there is provided a method of manufacturing the grating, wherein the flange portion is welded by a spot welding method in a state where the bearing bar and the cross bar are disposed.

In one preferred embodiment of the present invention, the flange portion may be welded at a time using an external welding device.

As described above, the grating having the flange portion according to the present invention and the method of manufacturing the same according to the present invention have the effect of greatly improving the reliability of welding by forming the flange portion which is shaped to wrap the bearing bar in the grating.

In addition, in the grating having the flange portion according to the present invention and the method of manufacturing the same, welding is performed after the flange portion of the grating is wrapped around a part of the bearing bar. As a result, There is an effect that can be improved.

In addition, since the grating having the flange portion according to the present invention and the method of manufacturing the same can weld the flange portion of the grating over the bearing chamber at one time using a welding device or the like, the process speed is greatly improved There is an effect that can be.

1 is a perspective view of a grating with a flange portion according to an embodiment of the present invention;
2 is a partial enlarged view of a portion A in Fig. 1;
3 is a side view of a grating with a flange portion according to an embodiment of the present invention;
Figure 4 is a side view of a crossbar in accordance with an embodiment of the present invention;
5 is a perspective view of a crossbar according to one embodiment of the present invention;
6 is a cross-sectional view showing a flange portion of a cross bar according to an embodiment of the present invention;
7 is a perspective view of a grating formed with a flange portion according to another embodiment of the present invention;
8 is a perspective view of a crossbar according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the embodiments are not intended to limit the scope of the present invention, which should be construed to facilitate understanding of the present invention.

The terms used in the examples are used only to illustrate specific embodiments and are not intended to limit the embodiments. The singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, the terms "comprises" or "having" and the like refer to the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The terminology used herein is a term used for appropriately expressing an embodiment of the present invention, which may vary depending on the user, the intent of the operator, or the practice of the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this embodiment belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as ideal or overly formal in the sense of the art unless explicitly defined herein Do not.

In the following description of the present invention with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant explanations thereof will be omitted. In the following description of the embodiments, a detailed description of related arts will be omitted if it is determined that the gist of the embodiments may be unnecessarily blurred.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to facilitate a person skilled in the art to which the present invention pertains.

As described above, in the conventional grating structure, there is a limitation in manufacturing a grating capable of ensuring the reliability of welding by the load applied to the grating in the welding process.

In the present invention, the welding is performed in a state where the flange portion formed in the grating is positioned to surround a part of the adjacent bearing bar, thereby greatly improving the welding reliability and work efficiency as compared with the grating by the conventional welding method. I tried to solve it.

FIG. 1 is a perspective view of a grating formed with a flange portion according to an embodiment of the present invention, and FIG. 2 is a schematic enlarged view of a portion A of FIG.

1 and 2, a grating 100 according to the present invention includes a rectangular frame 200, a plurality of bearing bars 300 mounted inside the frame 200, and a bearing bar 300 And a plurality of cross bars 500 having flanges 520 formed thereon.

The frame 100 may be formed in a substantially square or rectangular shape so as to have an empty space, but the present invention is not limited thereto and may be modified into a circle, an ellipse, a diamond, a triangle, etc. without departing from the scope of the present invention. Will be fully understood by those skilled in the art. In the case where the frame 100 is formed in a rectangular shape, the length and width of the frame 100 can be changed according to the place to be installed or the size of the place of use.

The frame 200 may be made of, for example, flat steel, stainless steel, or the like, or may be integrally formed or formed of a horizontal bar and a vertical bar, As shown in FIG. Such a frame 200 may be made of a metal such as steel, stainless steel or the like in a flat shape having a thickness of approximately 3 mm and a height of approximately 25 mm.

A bearing bar 300 is spaced apart from the inner space of the frame 200 by an interval of about 45 mm and a cross bar 500 is mounted between the bearing bars 300.

The bearing bar 300 is for reinforcing the supporting force of the grating 100. Both ends of the bearing bar 300 may be welded to the inner wall of the frame 200 or may be integrally formed. The material of the bearing bar 300 is not particularly limited, and a metal having the same or comparatively low rigidity as the frame 200 may be used. The thickness of the bearing bar 300 is preferably designed to meet the required load conditions.

The cross bar 500 is installed at a predetermined distance so as to divide the inner space of the frame 200. In general, the cross bar 500 is formed in a zigzag shape such as a triangle or the like, such as a rounded or semicircular shape. The cross bar 500 is formed with a flange portion 520 at a bent portion thereof in order to engage with the bearing bar 300.

Here, a plurality of stoppers 510 protruding upward are formed on the crossbar 500. The bottom surface of the stopper 510 may be approximately 4.0 mm to 10.0 mm, preferably approximately 7.0 mm, and the length of the upper surface of the stopper 510 may be approximately 2.0 mm to 10 mm, 0.0 > mm, < / RTI > preferably about 5.0 mm. The height of the stopper 510 may be approximately 0.5 to 2.5 mm, and preferably approximately 1.5 mm. Through this structure, stability can be ensured without interfering with the walking of the pedestrian.

The stopper 510 is formed of the same material as the crossbar 500. Preferably, the stopper 510 is formed by chamfering a part of the flatiron.

FIG. 3 is a side view of a grating with a flange according to an embodiment of the present invention. FIGS. 4 to 5 show a side view and a perspective view of a cross bar according to an embodiment of the present invention. Sectional view showing a flange portion of a cross bar according to an embodiment of the present invention.

Referring to FIGS. 3 and 6 together with FIGS. 1 and 2, the grating 100 includes a cross bar 500 disposed between a plurality of bearing bars 300 and an adjacent bearing bar 300.

' 형상으로 형성되어 인접한 베어링 바(300)의 상부면과 측면의 일부를 감싸는 구조로 이루어져 있다. 이 때, 프랜지부(520)의 폭은 평면의 절곡 부위(550) 폭에 대해 대략 1/2 크기를 갖도록 형성되어 있다. 따라서, 크로스 바(500)의 플랜지부(520)와 인접한 크로스 바(500)의 플랜지부(520)가 베어링 바(300)의 상면과 측면 일부를 감싸면서 상호 간섭되지 않고 교번하여 배치되게 된다.Here, an upper portion of the bent portion 550 of the cross bar 500 is eccentrically arranged in one direction, and the flange portion 520 is doubly bent,

'And is configured to surround a part of the upper surface and the side surface of the adjacent bearing bar 300. At this time, the width of the flange portion 520 is formed to be approximately 1/2 of the width of the bent portion 550 of the plane. The flange 520 of the cross bar 500 and the flange 520 of the cross bar 500 adjacent to the flange 520 of the cross bar 500 wrap around the upper and side portions of the bearing bar 300 without being interfered with each other.

The flange portion 520 may be made of various materials that can be heated and melted and the frame 200 and the cross bar 500 may be coupled while the flange portion 520 is spot welded and melted, And the cross bar 500 may be combined. The combination of the frame 200 or the bearing bar 300 and the cross bar 500 by such spot welding is advantageous in that it can be automated.

Here, according to the present invention, the flange portion 520 may be welded by spot welding, which is a hot pressure welding method. However, the present invention is not limited thereto. For example, it may be a non-heating type pressure welding among pressure welding methods, Arc welding, gas welding, and electric welding may be applied.

Hereinafter, the bearing bar 300 and the cross bar 500 are welded to each other, which will be described in more detail.

First, a quadrangular frame 200 is manufactured, and a plurality of bearing bars 300 are arranged at predetermined intervals in an inner space of the frame 200. In this case, the upper surface of the frame 200 and the upper surface of the bearing bar 300 have the same height, and the lower surfaces of the frame 200 and the bearing bar 300 have the same height.

Then, the cross bar 500 is bent at regular intervals to form a linear bending portion 550 having a predetermined length, and continuously forms a zigzag pattern. The cross bar 500 is eccentrically formed to one side from the center of the upper portion of each bending portion 550 The flange portion 520 is bent in two steps to prepare a cross bar 500 that surrounds a part of the bearing bar 300. The height of the cross bar 500 is relatively smaller than the height of the frame 200 or the bearing bar 300.

Next, after the cross bar 500 thus prepared is arranged from the upper portion of the frame 200, the cross bar 500 is positioned in the vicinity of the center of the bending portion 550 of the cross bar 500, When the flange portion 520 is welded to the upper surface of the bearing bar 20 by using a spot welder (not shown) in a state where the flange portions 520 are disposed to be in contact with or spaced apart from each other, (100) is completed. Here, if desired, the grating 100 may be coated through a surface treatment process such as plating.

The grating 100 having the flange portion 520 formed to surround the upper and side portions of the bearing bar 300 manufactured by such a process has a structure in which the bearing bar 300 and the cross bar 500 are fixed, ), It is possible to improve the ease of operation, increase the production speed, and lower the number of assembly operations.

FIG. 7 is a perspective view of a grating formed with a flange portion according to another embodiment of the present invention, and FIG. 8 is a perspective view of a grating having improved weldability by joint welding according to another embodiment of the present invention have.

7 and 8, unlike the grating 100 described above, the grating 700 includes a flange 520 formed on the bent portion 550 of the crossbar 500 mounted on the inner space of the frame 200, The flange portion 520 is positioned on the same line as the flange portion 520 formed on the bent portion 550 of the adjacent cross bar 500 with reference to an imaginary horizontal line, Except that interference is not generated and the width of the bending portion 550 is the same as the width of the bending portion 550 and is approximately twice as wide as the width of the bending portion 550. Therefore, a duplicate description will be omitted.

In this case, according to the present invention, since no interference occurs between the flange portions 520 as described above, the manufacturing process through welding can be made easier.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood. It is therefore to be understood that the above-described embodiments are illustrative and not restrictive in every respect.

Accordingly, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims are included in the scope of the present invention will be.

100, 700: Grating 200: Square frame
300: Bearing bar 500: Crossbar
510: stopper 520: flange portion
550: Bending area

Claims (9)

A frame in which an inner space is formed;
A plurality of bearing bars disposed at predetermined intervals in an inner space of the frame and having at least one stopper formed therein; And
And a plurality of cross bars seated on the stopper of the bearing bar,
Wherein the cross bar is provided with a flange portion having at least one flange portion for engaging the bearing bar.
The method according to claim 1,
Wherein the flange portion is formed in a shape to cover at least a portion of an upper portion of the bearing bar.
The method according to claim 1,
Wherein the flange portion is formed so as not to interfere with the adjacent flange portion.
The method according to claim 1,
Wherein the flange portion is welded to the bearing bar by a spot welding method.
The method according to claim 1,
Further comprising a safety net interposed between the bearing bar and the cross bar.
6. The method of claim 5,
Wherein the safety net has a plurality of through holes formed at predetermined intervals on an inner surface thereof.
The method according to claim 1,
The flange portion may be formed of a non-

And a flange portion formed on the flange portion.
A method of manufacturing a grating according to any one of claims 1 to 7, wherein a flange part welded with the flange part is welded in a spot welding manner in a state where the bearing bar and the cross bar are arranged.
9. The method of claim 8,
Wherein the flange portion is welded at one time.

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