KR102297176B1 - Easy to assemble truss girder and deck plate coupling spacer - Google Patents

Abstract

In the present invention, it is easy to manufacture the spacer connecting between the truss girder and the deck plate, so the manufacturing cost is low, and the productivity and workability are good by simply fastening the pin to the spacer and pressing it once with a hand or a tool. It is to provide a spacer for combining the truss girder and the deck plate, which is convenient to do.
The demolding deck plate according to the present invention is configured so that the spacer 30 is coupled to the truss girder 10 and the deck plate 20, and is manufactured at the factory. 1 is manufactured by welding and fixing the reinforcement part 311 and the truss girder 10, and after pouring concrete and curing the concrete, the deck plate 20 is removed.

Description

Easy to assemble truss girder and deck plate coupling spacer

The present invention relates to a spacer for combining a truss girder and a deck plate, and more particularly, it is easy to manufacture a spacer connecting between a truss girder and a deck plate, and a pin for coupling the deck plate and the spacer body can be easily fastened. It relates to a spacer for combining a truss girder and a deck plate that is convenient to assemble, which can improve productivity and workability.

A deck plate is used as a substitute for a formwork in forming a slab of a building, and refers to a material for a slab manufactured by processing a metal plate such as a galvanized steel sheet to form a structure without dismantling even after concrete is poured. When a slab structure is built using such a deck plate, there is no need for a separate mold, so the time and cost required for construction can be reduced. Its use is on the rise because of its advantages. Among these deck plates, a representative material widely used for slab floor construction of large buildings is a truss-type deck plate.

The general form of the truss-type deck plate consists of a deck plate 1 and a truss girder 2 fixed by welding on the upper part, as shown in FIGS. 7A and 7B, and the truss girder 2 is a metal wire. The lattice bar (3) is symmetrically arranged in a truss shape, and the upper and lower reinforcing bars (4) and lower reinforcing bars (5) are welded and fixed to the upper and lower parts of the lattice bar. The deck plate 1 made of the same metal is used as a substitute for the formwork, and the structure is formed without being removed (dismantled) after concrete is poured.

In the truss-type deck plate as described above, concrete is poured in the state where the truss girder is welded to the deck plate, which is the base member, and the concrete is fixedly installed, so it is impossible to reuse the deck plate that performs the formwork function. However, even if cracks occur, there is a problem that the exact point where the crack or crack occurred in the concrete cannot be found because of the deck plate located under the concrete. As a way to solve this problem, after concrete is poured and cured, the deck plate, which is the base member, is removed (dismantled) so that if cracks or cracks occur in the concrete, it can be checked and the deck plate can be reused. Plates have appeared and are being used.

The demolding deck plate is usually provided with a truss girder on the upper portion of the deck plate, which is a base member, and spacers (connectors) connecting them are provided and are detachably coupled by bolts passing through the deck plate. Therefore, in order to screw the bolt passing through the deck plate to the spacer, a through hole is formed in the deck plate, and a female thread is formed in the spacer. There is a problem in that productivity is low due to the increase in the number of processes. In addition, in the process of separating the deck plate, there is a problem in that the working time is delayed because a number of bolts have to be loosened, and the air is long. Therefore, the technically important point of the demolding deck plate is that it is easy to combine the deck plate with the truss girder, and it should be possible to quickly and easily remove (dismantle) the deck plate after concrete curing.

One of the technologies that have emerged to solve this problem is Patent Registration No. 1406910 "Spacer for demolding deck plate", which patented a cylindrical spacer body at both ends of a metal connecting rod formed by bending in a '∧' shape. is inserted, and is radially cut in the lower part of the cylindrical body so that the elastic locking part formed in the cone shape is fastened through the shutter. However, the patent has a problem that it is difficult and time-consuming to combine and remove the spacer, and as the inserted part is separated by the enormous weight of the concrete, the deck plate is also separated and collapsed or there is a problem that deformation may occur in some.

The applicant (inventor) of the present invention has researched and developed to solve the above problems, and at the end of the research and development, Patent Application No. 2019-47369 "Spacer for detachable deck plate that is easy to combine and remove", Patent Application No. 2019-83569 "Truss girder" and Deck Plate Combination Spacer", Patent Application No. 2019-171723 "A spacer for combining a truss girder and deck plate for easy bonding and dismounting" has been developed and applied. This series of processes led to the present invention.

The present invention has been devised to solve the above problems, and an object of the present invention is to easily manufacture a spacer connecting between a truss girder and a deck plate, thereby reducing the manufacturing cost, and coupling between the deck plate and the spacer body. To provide a spacer for combining a truss girder and deck plate, which is convenient to assemble, which can greatly improve productivity and workability by simply pressing a pin on the pin fastening part of the spacer body with a hand or a tool once. will be.

The spacer for combining the truss girder and the deck plate, which is convenient to assemble according to the present invention, is bent vertically at both ends of the horizontal part of the rectangular shape formed by the plate to form a vertical part of a certain height, and the end of the vertical part ) is bent outward again to form a pin fastening part, and the pin fastening part has a spacer body having a hole through which the pin is inserted; It is composed of an outer pin and an inner pin that is inserted into and fastened to the outer pin, and the inner pin and the outer pin pass through the through hole formed in the pin fastening part to fix the spacer body and the deck plate together; including; The spacer body is characterized in that it is manufactured through a press process using a metal material.

The spacer according to the present invention is formed in a rectangular shape formed of a plate, both ends are provided with pin fastening portions, respectively, the pin fastening portion has a spacer body in which a through hole is formed into which the pin is inserted; Consists of an outer pin and an inner pin that is inserted into and fastened to the outer pin, and the inner pin and the outer pin pass through a through hole formed in the pin fastening portion to couple and fix the spacer body and the deck plate; and a spacer. The body is characterized in that it is manufactured through a press process using a metal material.

Preferably, a jacket made of plastic and capable of accommodating the pin fastening portion is further coupled to the pin fastening portion, wherein the jacket has a hollow portion capable of accommodating the pin fastening portion therein, and a housing with one side open; It is composed of a through hole formed in the housing positioned at the upper and lower portions of the hollow portion, and the pin is fastened through the through hole formed in the jacket and the through hole formed in the pin fastening portion.

Preferably, the inner pin in the pin is configured by integrally forming a column part having a spiral formed on the outer circumferential surface and a head having a diameter larger than that of the column at one end of the column part, and the outer pin in the pin is a disk In the shape, an insertion hole is formed in which the pillar portion of the inner pin is inserted in the central portion, and an insertion groove is formed in which the head of the inner pin is seated by being formed to be stepped on the outside of the insertion hole; In the lower part of the head part, split pins formed by being divided into 2 to 5 are installed in the vertical direction to the head part. and a split pin portion formed so as to be elastically open and closed, and a portion surrounded by the split pin in the split pin portion forms a hollow portion, so that the insertion hole formed in the head portion by the pillar of the inner pin is formed. As it penetrates through the hollow portion of the split pin portion, the split pin has an outwardly open shape.

Preferably, on the inner surface of the split pin, a spiral is formed for each split pin so that one spiral is formed on the entire inner circumferential surface of the split pin part.

Preferably, the horizontal portion of the spacer body has a first reinforcing portion formed along the longitudinal direction so that the cross-section forms a '∧' or '∩' shape, and a second reinforcing portion is formed at a portion where the horizontal and vertical portions of the spacer body meet. 2 Reinforcing parts are formed and configured.

Since the spacer for deck plate coupling according to the present invention is made of a metal material and finished in one press process, the manufacturing process is simple as well as the production cost can be significantly reduced. In addition, a separately manufactured pin is coupled to the pin fastening part located at both ends of the spacer body. When coupling to the deck plate, place the pin on the pin fastening part of the spacer body and use a hand or tool in a one-touch method. Since it is combined by just pushing it once, the work of combining the spacer to the deck plate can be done very conveniently and quickly. No matter how heavy a load is applied, the deck plate and spacer will be separated and will not collapse or deform.

1 is a partially enlarged cross-sectional view showing a truss girder, a deck plate and a spacer separated and a spacer coupled to the deck plate.
Figure 2 is a cross-sectional view of the spacer and the deck plate according to the present invention is coupled and separated state.
3 is a perspective view of a spacer according to the present invention;
Figure 4 is a view showing a jacket (jacket).
5 is a view illustrating an inner pin and an outer pin and a state in which they are coupled.
6 is a view showing another embodiment of a spacer according to the present invention.
7A is a perspective view of a general truss girder and a deck plate, and FIG. 7B is a cross-sectional view taken along line AA of FIG. 7A and a partially enlarged view.

The technical feature of the spacer for deck plate coupling according to the present invention is that it can be manufactured in a single press process when manufacturing the spacer body, and when fastening the pin, the pin is pressed against the spacer body by hand or tool once. The fastening work is finished, and after the pin is fastened, the spacer and the tech plate are not separated, which significantly increases productivity, workability and safety.

The demolding deck plate according to the present invention is configured so that the spacer 30 is coupled to the truss girder 10 and the deck plate 20 and is manufactured at the factory, and the first reinforcement part ( 311) and the truss girder 10 are welded and fixed, and the concrete is poured in the field and after the concrete is cured, a part of the pin 30 is easily removed and the deck plate 20 is removed.

When the spacer 30 is described with reference to FIG. 2 , the spacer 30 includes a spacer body 31 made of an iron plate (metal material), and pin fastening portions formed at both bent ends of the spacer body 31 . By inserting the pin 33 into the 313, the spacer body 31 and the deck plate 20 are coupled and fixed.

' 형상이다. 이와 같이 철판(금속재)으로 된 스페이서 본체(31)는 한 번의 프레스 공정으로 제작되므로 제작이 매우 수월하고 간단하여 제조단가를 현저하게 낮출 수 있다.The spacer body 31 is manufactured in a rectangular shape formed of a plate having a predetermined width and length, and is first bent vertically at both ends in the longitudinal direction of the horizontal portion to form a vertical portion of a predetermined height, and ends of the vertical portion (端部) is bent outward again to form a pin fastening part 313, and the pin fastening part 313 is configured with a through hole into which the pin 33 is inserted.

' is the shape. As described above, since the spacer body 31 made of an iron plate (metal material) is manufactured by a single press process, it is very easy and simple to manufacture, so that the manufacturing cost can be significantly reduced.

Since the upper portion of the spacer body 31 and the truss girder 10 need to be welded, the spacer body 31 has a cross-section so as to be convex upward in the longitudinal direction between the portions that are first bent at both ends. It is preferable to form the first reinforcing part 311 having a shape such as '∧' or '∩'. In addition, since the spacer body 31 is made of a thin iron plate, in the first and second bent portions for strength reinforcement, a second reinforcing portion formed by pressing certain portions on both sides of the bent portion in the bent inward direction. It is preferable to form the 312, and the second reinforcing part 312 is formed in one or two places for each bent portion.

The pin fastening part 313 may further include a jacket 32 made of plastic and having a shape capable of accommodating the pin fastening part 313 . The jacket 32 is a housing 321 in which a hollow portion 322 is formed therein. A hollow portion 322 in which the pin fastening portion 313 is accommodated is formed in the housing 321, One side of the part 322 is opened, and the pin fastening part 313 of the spacer body is inserted into the jacket 32 through the open side and coupled thereto. A through hole 323 is formed in the housing 321 positioned at the upper and lower portions of the hollow portion 322 , so that when the pin 33 is fastened, the pin 33 is a through hole 323 formed in the jacket and the pin. It is fastened through the through hole formed in the fastening part 313 .

When the deck plate 20 is separated after the concrete is cured, if the jacket 32 is not used, the lower surface of the pin fastening part 313 of the spacer body is exposed to the cured concrete surface, and the pin fastening part ( Because the 313 is made of metal, problems such as corrosion occur, but when the deck plate 20 is separated after the concrete is cured when the jacket 32 is covered on the pin fastening part 313, plastic Since the jacket 32 made of is exposed, the problem of corrosion does not occur.

The pin 33 is composed of an outer pin 332 and an inner pin 331 inserted and fastened to the outer pin 332 , and the inner pin 331 and the outer pin 332 are the pin fastening parts 313 . ) through the through hole formed in the spacer body 31 and the deck plate 20 is coupled and fixed. The inner pin 331 is configured by integrally forming a pillar portion 331a having a spiral formed on its outer circumferential surface, and a head portion 331b having a larger diameter than the pillar at one end of the pillar portion (see FIG. 5). .

The outer pin 332 is divided into a head portion 332a and a split pin portion 332b. The head portion 332a has a circular plate shape, and the column portion 331a of the inner pin 331 is inserted into the center portion of the insertion hole. (332c) is formed, the outer side of the insertion hole (332c) is formed so as to be stepped (段), the insertion groove (332d) in which the head (331b) of the inner pin (331) is seated is formed is formed.

The split pin portion 332b is formed by vertically dividing 2 to 5 divided pins formed in the lower portion of the head portion 332a so as to be perpendicular to the head portion 332a, and each split pin has a tip end inside It is formed thickly, and is formed so as to be elastically open and closed around a portion where the head portion 332a and the split pin come into contact with each other. The part surrounded by the split pin in the split pin part 332b forms a hollow part, and as the column part 331a of the inner pin penetrates the hollow part of the split pin part 332b through the insertion hole 332c formed in the head part, the split pin is formed. It has an outwardly open shape (see FIGS. 2 and 5). As such, as the inner pin 331 is inserted, the split pin portion 332b of the outer pin 332 opens outward, so the fastening force of the pin 33 is strengthened and once fastened, no matter how heavy a load is applied to the deck. The plate 20 and the spacer 30 are separated so that no collapse or deformation occurs.

In addition, when fastening the pin 33, insert the split pin portion 332b of the outer pin 332 into the through hole of the pin fastening portion 313, and then insert the column portion 331a of the inner pin into the insertion hole of the outer pin ( 332c), if the upper part of the head 331b of the inner pin is pressed only once with a hand or a tool, the column part 331a of the inner pin is inserted into the hollow part of the split pin part 332b, and the tip part is moved inward. Since the thickly formed split pin is spread apart, the split pin portion 332b of the outer pin is opened outward. In this way, since the pin 33 fastening operation is finished only by pressing once with a hand or a tool by an operator, the fastening operation is also very easy and simple, and workability is greatly improved.

On the inner surface of the split pin, it is preferable that a spiral is formed for each split pin so that one spiral is formed on the entire inner circumferential surface of the split pin portion 332b. When a spiral is formed on the inner circumferential surface of the split pin portion 332b as described above, it is coupled with the spiral formed on the outer circumferential surface of the column portion 331a of the inner pin, thereby being more strongly coupled.

On the other hand, if a notch is formed on the outer peripheral surface of the split pin and the column part 331a of the inner pin, when the deck plate 20 is removed after the concrete is cured, the inner pin 331 protruding to the lower part of the deck plate 20 and Even if only a slight impact is applied from the side of the outer pin 332 with a hammer, tool, or grinder, the portion where the notch is formed is cracked and the inner pin 331 and the outer pin 332 located below the notch are removed, so the deck plate The removal (disassembly) of (20) can be done very conveniently and quickly.

6 shows another embodiment of the spacer according to the present invention, the difference from the embodiment described above is that the spacer body is not bent, and the rest are the same. 6, since the spacer body 31' has a shape that is not bent, it has a flat plate shape without forming a vertical part, and a pin fastening part having a through hole is located at both ends of the plate shape. , the jacket 32' is covered with the pin fastening portion is the same. In addition, since the upper part of the spacer body 31' and the truss girder 10 must be welded, the spacer body 31' has a cross section so as to be upwardly convex in the longitudinal direction between the pin fastening parts positioned at both ends. (斷面) It is preferable to form the first reinforcing part 311' having a shape such as '∧' or '∩', and the first reinforcing part 311 ' may be formed in one line, but it is preferable to form it in two lines. desirable.

The above description is illustrative of the present invention, and the embodiments published in the specification are for explanation rather than limiting the technical idea of the present invention, so those of ordinary skill in the art to which the present invention pertains. Various modifications and variations will be possible without departing from the technical idea of Therefore, the protection scope of the present invention should be construed by the matters described in the claims, and technical matters within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10 : truss girder
20: deck plate
30: spacer 31, 31': spacer body
311, 311': first reinforcement part 312: second reinforcement part
313: pin fastening part
32, 32': jacket 321: housing
322: hollow part 323: through hole
33: pin 331: inner pin
331a: pillar part 331b: head part
332: outer pin 332a: head part
332b: split pin part 332c: insertion hole
332d : insertion groove

Claims (7)

In the spacer for coupling the truss girder and the deck plate in the demolding deck plate,
The spacer is
At both ends of the rectangular-shaped horizontal part formed by the plate, it is first bent vertically to form a vertical part of a certain height, and the end of the vertical part is secondly bent to the outside again to form a pin fastening part, respectively. , the first reinforcing part is formed along the longitudinal direction so that the cross-section forms a '∧' or '∩' shape between the primary bent parts, and in the primary and secondary bent parts, the bent part is the center a spacer body in which a second reinforcing part is formed by pressing certain portions of both sides in the bent inward direction, and a through hole into which a pin is inserted in the pin fastening part;
It consists of an outer pin and an inner pin that is inserted into and fastened to the outer pin, and the inner pin and the outer pin pass through a through hole formed in the pin fastening part to fix the spacer body and the deck plate by coupling;
Is configured to include, the spacer body is manufactured through a press process using a metal material,
In the pin, the inner pin is configured by integrally forming a pillar portion having a spiral formed on the outer circumferential surface, and a head portion having a larger diameter than the pillar at one end of the pillar portion,
In the pin, the outer pin is,
a head portion having an insertion hole in which the column of the inner pin is inserted in the central portion of the disk shape, and an insertion groove formed to be stepped on the outside of the insertion hole, in which the head of the inner pin is placed;
In the lower part of the head part, split pins formed by being divided into 2 to 5 are installed in the vertical direction to the head part. a split pin portion configured to be elastically open and retracted;
The portion surrounded by the split pin in the split pin part forms a hollow part, and as the pillar part of the inner pin penetrates the hollow part of the split pin part through the insertion hole formed in the head part, the split pin opens outwardly. A spacer for combining a truss girder and deck plate, which is convenient to assemble, characterized in that a notch is formed on the outer peripheral surface of each split pin and a certain part of the column part of the inner pin.
In the spacer for coupling the truss girder and the deck plate in the demolding deck plate,
The spacer is
It is formed in a rectangular shape formed of a plate, and pin fastening parts are positioned at both ends, respectively, and the first reinforcing part has a length between the pin fastening parts so that a cross-section forms a '∧' or '∩' shape. a spacer body formed along the direction and having a through hole through which the pin is inserted in the pin fastening portion;
It consists of an outer pin and an inner pin that is inserted into and fastened to the outer pin, and the inner pin and the outer pin pass through a through hole formed in the pin fastening part to fix the spacer body and the deck plate by coupling;
Is configured to include, the spacer body is manufactured through a press process using a metal material,
In the pin, the inner pin is configured by integrally forming a pillar portion having a spiral formed on the outer circumferential surface, and a head portion having a larger diameter than the pillar at one end of the pillar portion,
In the pin, the outer pin is,
a head portion having an insertion hole in which the column of the inner pin is inserted in the central portion of the disk shape, and an insertion groove formed to be stepped on the outside of the insertion hole, in which the head of the inner pin is placed;
In the lower part of the head part, split pins formed by being divided into 2 to 5 are installed in the vertical direction to the head part. a split pin portion configured to be elastically open and retracted;
The portion surrounded by the split pin in the split pin part forms a hollow part, and as the pillar part of the inner pin penetrates the hollow part of the split pin part through the insertion hole formed in the head part, the split pin opens outwardly. A spacer for convenient assembly of a truss girder and deck plate, characterized in that a notch is formed on the outer peripheral surface of each split pin and a certain part of the column part of the inner pin.
3. The method of claim 1 or 2,
A jacket made of plastic and capable of accommodating the pin fastening portion is further coupled to the pin fastening portion, the jacket comprising:
a housing having a hollow portion capable of accommodating the pin fastening portion therein and having one side of the hollow portion open;
a through hole formed in the housing positioned at the upper and lower portions of the hollow part;
Consisting of, the pin is a spacer for convenient assembly of the truss girder and deck plate, characterized in that the pin is fastened through the through hole formed in the jacket and the through hole formed in the pin fastening part.
delete According to claim 1,
A spacer for combining a truss girder and deck plate for convenient assembly, characterized in that a spiral is formed for each division pin so that one spiral is formed on the inner circumferential surface of the entire division pin on the inner surface of the division pin.
delete According to claim 1,
A spacer for convenient assembly of a truss girder and a deck plate, characterized in that a second reinforcing part is formed at a portion where the horizontal part and the vertical part meet of the spacer body.

Images