KR102322585B1 - Sleeper for formwork - Google Patents

Abstract

The present invention relates to a sleeper for a formwork, which is installed on an upper part of a staging to support the formwork. The sleeper (100) for the formwork of the present invention comprises: a main body (110) made of an I-beam; cut surfaces (120) formed at both ends of the main body (110); a square beam (130) attached to the cut surfaces (120) to form an integral structure with the main body (110); an extension member (140) which is slidably coupled to the inside of the square beam (130); an insertion hole (150) formed in the square beam (130); and a tightening bolt (170) which is fastened to the insertion hole (150) and closely fixes the extension member (140) inside the square beam (130).

Description

Yoke material for formwork {Sleeper for formwork}

The present invention relates to a yoke material for a form that is installed on the upper part of the dongbari to support the form.

In general, the yoke material is a form support member used together with the ridge supporting the form when constructing a concrete structure.

Since such a yoke material receives a large load from the top when concrete is poured into the formwork, it is generally made of a steel beam structure with a square cross-section with excellent strength, and both ends are mounted on top of the two facing pillars to connect the two pillars. is constructed

However, the conventional yoke material has a chronic problem that the central portion sags down by the load of the concrete poured into the formwork.

In this case, the formwork supported by the yoke material sags downward along the yoke material, and as a result, a serious defect in construction occurs in that the concrete is molded into a convex shape downward.

In order to prevent such a defect, the installation interval of the dongbari should be narrowed, but in this case, the installation quantity and installation time of the dongbari increases rapidly, causing another problem in that the construction period is delayed and the amount of work is greatly increased.

In addition, since the conventional yoke material is a steel beam having a square cross section, there is a problem in that it is difficult to install, transport and handle because it is a member of high weight that is difficult for an operator to handle.

In addition, the conventional yoke material is produced in different lengths according to the spacing of the yoke because the spacing of the dongbari is different for each site, so it is difficult to manage the specifications and has a problem in that the production cost is greatly increased.

Domestic Registered Patent Publication No. 10-1415254

The present invention has been devised to solve the above problems, and the purpose is to provide a yoke material for formwork that is light in weight, easy to handle, has excellent flexural strength to prevent sagging, and can respond to copper bars of different intervals. .

In order to achieve the above object, the yoke material for formwork of the present invention has a main body made of I-beam, cut surfaces formed at both ends of the main body, and a square beam attached to the cut surface to form an integral with the main body, and the inner side of the square beam It includes an extension member slidingly coupled to the square beam, an insertion hole formed in the square beam, a nut attached to the insertion hole, and a tightening bolt fastened to the nut to closely fix the extension member inside the square beam.

In addition, the cut surface may be formed of a horizontal cut surface formed from the end of the body toward the center of the body and a vertical cut surface formed from the horizontal cut surface to the upper end of the body.

In this case, the vertical cut surface is formed to have the same length as the height of the square beam, so that the top surface of the main body and the top surface of the square beam are located on the same plane.

On the other hand, a fixing bracket may be attached to the end of the extension member so as to be fixed by hanging on a surrounding fixture.

In the present invention configured as described above, since the main body is made of I-beam, it is lighter in weight and superior in flexural strength compared to the conventional steel beam having a square cross section, and it is easy to transport and handle, so workability is improved and sagging is prevented. Rather, by increasing the distance between dongbari and reducing the amount of dongbari installation and dongbari installation work, the construction period can be shortened and the construction cost can be greatly reduced.

In addition, in the present invention, since the square beam is attached to both sides of the main body and the extension member is slidably coupled to the inside of the square beam, the entire length can be freely stretched and contracted, so that the response according to the installation interval of the dongbari is free and Since it is not necessary to manufacture several types for each length, it is possible to greatly reduce the manufacturing cost and has the effect of facilitating the specification management.

1 is a perspective view of a yoke material for formwork according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of a yoke material for a form according to an embodiment of the present invention.
Figure 3 is a state diagram of the use of a yoke material for formwork according to an embodiment of the present invention.
Figure 4 is a state diagram of the use of a yoke material for formwork according to another embodiment of the present invention.

The features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments, taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in the present specification and claims are based on the principle that the inventor can appropriately define the concept of the term in order to best describe his invention in the technical spirit of the present invention. It must be interpreted with a corresponding meaning and concept.

In addition, the terms or words used in the specification and claims are used only to describe specific embodiments, and are not intended to limit the present invention.

For example, the singular expression includes the plural expression unless the context clearly dictates otherwise. In addition, terms such as "comprises" or "comprising" or "having" are intended to designate the presence of a feature, number, step, action, component, part, or combination thereof described in the specification, but one or more It should be understood that this does not preclude the possibility of addition or existence of other features or numbers, steps, operations, components, parts, or combinations thereof.

Also, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “directly on” but also the case where there is another part in between. Conversely, when a part of a layer, film, region, plate, etc. is said to be “under” another part, this includes not only cases where it is “directly under” another part, but also cases where there is another part in between.

In addition, terms including an ordinal number such as "first", "second", etc. used herein may be used to describe various elements, but the elements are not limited by the terms, and the terms are It is used only for the purpose of distinguishing one component from another.

Hereinafter, in describing an embodiment of the present invention in detail with reference to the drawings, the same reference numerals are used for the same components, and only different parts are mainly described so as not to overlap as much as possible for clarity.

Figure 1 is a perspective view of a yoke material for formwork according to an embodiment of the present invention, Figure 2 is an exploded perspective view of a yoke material for a formwork according to an embodiment of the present invention, Figure 3 is a formwork material according to an embodiment of the present invention As a state diagram of the use of the yoke material, as shown, the yoke material 100 for the formwork of the present invention has a main body 110, a cut surface 120, a square beam 130, an extension member 140, an insertion hole 150, and Consists of a nut 160 and a tightening bolt 170 .

The main body 110 is made of an I-shaped steel having a certain length.

It is suitable as the yoke material 100 because it is basically excellent in flexural strength due to the characteristics of the I-beam. Considering this point, it is preferable that the main body 110 is formed to have a longer vertical length compared to the left and right width to maximize bending strength.

Cut surfaces 120 are formed at both ends of the body 110 .

The cut surface 120 is a horizontal cut surface 121 formed from the end of the main body 110 toward the center of the main body 110 so as to correspond to the end shape of the square beam 130, and the main body 110 from the horizontal cut surface 121. ) is made of a vertical cut surface 122 formed as an upper end.

A square beam 130 is attached to the cut surface 120 made in this form.

The square beam 130 may be firmly attached through welding with one end in close contact with the cut surface 120 . That is, the lower surface of the square beam 130 is welded in close contact with the horizontal cut surface 121 of the cut surface 120 , and one end is welded in close contact with the vertical cut surface 122 of the cut surface 120 . will become

At this time, the vertical cut surface 122 of the cut surface 120 is formed to have the same length as the height of the square beam 130 so that the upper surface of the main body 110 and the upper surface of the square beam 130 are located on the same plane. should be configured to

Because, if the upper surface of the main body 110 and the upper surface of the square beam 130 are not located on the same plane, the yoke material 100 cannot support the form in a horizontal state, and accordingly, the form is uniformly This is because a serious defect in construction that sags down while not being supported occurs, or an accident in which the yoke material 100 is bent or damaged occurs while a concentrated load is applied to one side of the yoke material 100 .

On the other hand, the other end of the square beam 130 may protrude from the main body 110, but it is preferable to design the protrusion length not to exceed a certain range in consideration of the bending strength of the square beam 130.

According to the present invention, the extension member 140 is inserted into the square beam 130 .

The extension member 140 is slidably coupled in the left and right directions along the inside of the square beam 130 .

Since the extension member 140 receives a large load from the upper portion like the square beam 130 , it is preferable that the extension member 140 be made of a steel material having excellent strength.

In addition, since the extension member 140 bears the load acting on the upper portion of the square beam 130 together with the square beam 130 , the bending strength of the square beam 130 is greatly improved.

Therefore, the extension member 140 is preferably formed to be in close contact with the inner surface of the square beam (130).

Meanwhile, an insertion hole 150 is formed in the square beam 130 , a nut 160 is attached to the insertion hole 150 through welding, and a tightening bolt 170 is fastened to the nut 160 . .

The tightening bolt 170 is fastened to the nut 160 and passes through the insertion hole 150 to tightly tighten the extension member 140 so that it is closely fixed, thereby limiting the sliding movement of the square beam 130 .

The yoke material 100 for the formwork of the present invention configured in this way properly draws out the extension member 140 from the square beam 130 according to the interval of the copper bar (A), and then inserts the tightening bolt 170 into the insertion hole 150 . ) and firmly fasten the extension member 140 by strongly tightening the tightening bolts 170, and then mount them on the upper ends of the copper bars (A) facing the ends of the extension member 140, respectively, to complete the installation.

Therefore, the yoke material 100 for the formwork of the present invention can freely expand and contract the entire length by using the extension member 140 regardless of the installation interval of the pillars (A), so the response according to the installation interval of the pillars (A) this is free

As a result, the user does not need to manufacture several types for each length, thereby greatly reducing the manufacturing cost and facilitating the specification management.

In addition, since the yoke material 100 for the formwork of the present invention has an I-shaped cross-section in the central body 110, the surface area is small compared to the steel beam having a square cross-section, and thus the weight is relatively light.

Therefore, the yoke material 100 for the formwork of the present invention is light in weight, so that it is easy to transport and handle, and the workability is greatly improved.

In addition, since the yoke material 100 for the formwork of the present invention has an I-shaped cross-section, the body 110 has superior flexural strength compared to an iron beam having a square cross-section, so sagging is reliably prevented.

This increase in flexural strength leads to an increase in the distance between the bars (A), so the number of bars (A) installed and the amount of work to be installed in bars (A) are reduced. As a result, it is possible to shorten the construction period and reduce construction costs. .

4 is a state diagram of the use of a yoke material for formwork according to another embodiment of the present invention. A fixing bracket 180 may be attached to the end of the extension member 140 so as to be suspended and fixed to the surrounding fixture (B). have.

In this case, it is preferable that the screw hole 185 is formed in the fixing bracket 180 so that it can be easily connected to the surrounding fixture (B). Of course, a through hole corresponding to the screw hole 185 should be formed in the fixture (B).

According to this embodiment, when the through hole of the peripheral fixture (B) and the screw hole 185 of the fixing bracket 180 are matched, and then the connection bolt 190 is fastened to the screw hole 185, the The yoke material 100 of the invention can be stably suspended and fixed to the surrounding fixture (B).

In this way, when the fixing bracket 180 is provided at the end of the extension member 140, the fixing bracket 180 is used at the work site where it is difficult to install the copper bar (A) to be firmly attached to the surrounding fixture (B). It is possible to stably support the formwork by connecting the

As such, although the preferred embodiment of the present invention has been described above with reference to the drawings, the present invention is not limited to the above-described embodiment, and a person skilled in the art can modify it without departing from the spirit of the present invention. It is possible, and such modifications will fall within the scope of the present invention.

100...Yoke material for formwork 110...Main body
120...Cutting section 121...Horizontal sectioning section
122...vertical section 130...square beam
140...extension member 150...insertion hole
160...Nut 170...Tightening bolt
180...Fixing bracket 185...Screw
B...fixtures

Claims (3)

a body having an I-shaped cross-section;
a square beam attached to the cut surfaces formed at both ends of the main body so as to be integral with the main body;
an extension member that is slidably coupled to the inside of the square beam;
an insertion hole formed in the square beam;
a nut attached to the insertion hole; and
A fastening bolt fastened to the nut to closely fix the extension member inside the square beam; including,
The cut surface consists of a horizontal cut surface formed from the end of the body toward the center of the body and a vertical cut surface formed from the horizontal cut surface to the upper end of the body,
The vertical cut surface is formed to have the same length as the height of the square beam so that the top surface of the main body and the top surface of the square beam are located on the same plane,
The lower surface of the square beam is welded in close contact with the horizontal cut surface of the cut surface, and one end of the square beam is welded in close contact with the vertical cut surface of the cut surface,
The extension member is a yoke material for formwork which is formed in close contact with the inner surface of the square beam. delete The method of claim 1,
A fixing bracket is attached to the end of the extension member so that it can be fixed by hanging on a surrounding fixture,
A screw hole is formed in the fixing bracket,
A through hole corresponding to the screw hole is formed in the fixture,
After the through hole and the screw hole are matched, a connection bolt is fastened to the screw hole to stably hang and fix the yoke material for the formwork to the fixture.

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