KR100635216B1 - Coupling apparatus for moving concrete structure - Google Patents

Abstract

Provided is a coupling device for conveying concrete structures, which simplifies coupling with a drawing hook of an external drawing device, prevents the drawing hook from being decoupled by external impact, and improves workability and cost efficiency when conveying and storing concrete structures. The coupling device for conveying concrete structures comprises: an insertion member(100) that comprises a head portion, body portion and a bed portion and is inserted into concrete structures to apply an external drawing force directly to the concrete structures; and a connection member(200) that comprises a coupler portion coupled to the head portion and a coupling ring portion coupled to a drawing hook of an external drawing device. In the coupling device, the coupler portion of the connection member comprises: a main body; an insertion port(213) into which the head portion is inserted; a guide groove along which the head portion rotates; a space portion for housing the head portion; and a chuck piece formed in the space portion and engaged with the head portion via the rotation of the connection member along z-axis.

Description

Fastening device for transporting concrete structures {COUPLING APPARATUS FOR MOVING CONCRETE STRUCTURE}

1A to 1G are perspective views each showing an embodiment of the insertion member according to the present invention;

Figure 2 is a side cross-sectional view showing a state in which the insertion member is inserted into the interior of the concrete structure according to the present invention,

Figure 3a to 3e is a perspective view, front view, side view, plan view, side cross-sectional view of an embodiment of a connecting member according to the present invention,

4a to 4e are a perspective view, a front view, a side view, a plan view, a bottom view of another embodiment of a connecting member according to the present invention,

5a to 5c is a three-dimensional view, front view, side view of the fastening device for conveying the concrete structure,

6A and 6B are cross-sectional views taken along line A-A and line B-B of FIGS. 5B and 5C;

7A to 7C are cutaway perspective views, a cutaway front view, and a cutaway side view of cutting a main part in a state in which an insertion member and a former are coupled according to the present invention;

8a and 8b is a perspective view showing another embodiment of the fastening device for transporting the present concrete structure,

FIG. 9 is a perspective cutaway view of the main part of the inserter and the former of FIG. 8A and FIG.

10 is an exploded perspective view showing a state in which the auxiliary fixing means is added to the connection member of FIG.

11 is a perspective view showing another embodiment of a connecting member according to the present invention;

12 is a cross-sectional view taken along the line C-C of FIG.

13 is a perspective view showing a state in which an insertion member is fastened to the connection member of FIG.

FIG. 14 is a cutaway perspective view of the main part of FIG. 13;

15A to 15C are perspective views illustrating the fastening process of FIG. 13 in order;

16A and 16B are perspective views showing another embodiment of the insertion member according to the present invention;

17A and 17B are perspective views of a connection member corresponding to the insertion member of FIGS. 16A and 16B.

18A and 18B are perspective views showing the fastening device for conveying concrete structures of an example installed in a mold without a former by the insertion member of FIGS. 16A and B and the connection member of FIGS. 17A and 17B;

19 is a perspective view showing another embodiment of the fastening device for conveying concrete structures;

20 is a perspective view showing a state in which the present concrete structure transfer fastening device is used,

21A to 21C are front view, side view, and plan view of FIG. 20.

<Description of the symbols for the main parts of the drawings>

One; Fastening device for transporting concrete structures, 3; Tow Hook,

5; Concrete structure, 7; Former,

9; Groove 100; Insertion member,

110; Head portion 130; Body Part,

130a; Deformed bar, 150; Bed,

200; A connecting member, 210; Coupler,

211; Body 212; Coupler Support Flange,

213; Insertion hole, 215; Space,

217; Hanging piece, 219; Guide groove,

230; Fastening part 300; Auxiliary fixing means,

300a; Steel ball, 300b; Elastic Spring,

300c; Captive bolt, 400; Support Flange,

500; Auxiliary foundation member, 600; mold.

The present invention relates to a fastening device for transporting concrete structures, in particular, in the fastening work for transporting concrete structures, the traction hook of the external traction member can be easily and easily fastened to the fastening device for transporting concrete structures. In addition to improving the workability, the problem of the conventional fastening device in which the towing hook is dislodged by external shock or imbalance during the transfer operation prevents the risk of safety accident, and the tip of the head is positioned lower than the surface of the concrete structure. Therefore, when storing and transporting concrete structures, they can be stacked in multiple layers, which greatly reduces storage and transport costs, and prevents cracking and appearance damage due to stress concentration caused by conventional protrusions. Labor cost and work cost by eliminating the need for cutting of the existing link through The present invention relates to a fastening device for transporting concrete structures, which improves aesthetics after work by filling a space between the head part and the concrete structure using mortar and the like after installation.

In general, concrete structures used when constructing panels, walls, beams and bulkheads have a weight of several tons or tens of tons, so lifting, conveying, transporting or assembling work is performed through an external towing member such as a large crane. Perform.

The method mainly used in the conventional work site is largely a method of winding the concrete structure with a wire rope and transporting it to an external towing member such as a crane, and the towing hook of the external towing member to a lifting hook or anchor exposed to the outside of the concrete structure. Or by hooking the tow rope.

However, the former method has a disadvantage that the fastening operation for transporting is very complicated and manpower consumption is very serious, and the work is very dangerous. The latter method is the concrete structure of the lifting ring or anchor due to external impact or vibration. Not only does it have a problem of being easily separated from, but also the lifting ring or anchor is exposed to the outside of the concrete structure so that it cannot be transported or stored in multiple layers, and after the installation is completed, the lifting ring or anchor is oxygenated. Problems such as the need to remove using a welding machine.

In order to solve such a problem, techniques such as domestic registered utility model No. 20-0191011 (inserted anchor for concrete structure lifting) and domestic registered utility model No. 20-0229791 (hanger set of concrete assembly) have been proposed.

Specifically, the domestic registered utility model No. 20-0191011 (concrete structure lifting insertion anchor) is to be recognized that by slightly bending the lower end of the buried portion embedded in the interior of the concrete structure, the binding force of the insertion anchor and the concrete structure slightly improved. However, there is still a conventional problem, such that the front end of the insertion anchor is exposed to the outside of the concrete structure, so that multi-stage stacking is impossible, and the cutting anchor should be separately cut after installation.

On the other hand, the domestic registered utility model No. 20-0229791 (hanger set of concrete assembly) is separated from the anchor and hanger, using the anchor fixture to the tip of the anchor is not configured to be exposed to the outside of the concrete structure is excellent However, if the anchor and the hanger are not fixed, and an external factor such as external impact, vibration, or unbalance of the center of gravity is caused during the transfer of the concrete assembly, the hanger may be separated from the anchor. Carry the risk of.

Therefore, there is a need for a new concrete structure transfer fastening device that can solve the above problems.

The present invention has been made in view of the above necessity, and can easily and easily fasten the towing hook of the external towing member to the fastening device for transporting the concrete structure during the fastening work for the transport of the concrete structure, thereby simplifying and working the fastening work. As well as improving the performance, the problem of the conventional fastening device that the towing hook is separated by the external shock or imbalance during the transfer operation to prevent the problem of safety accidents, because the head of the head is located lower than the surface of the concrete structure When storing and transporting concrete structures, they can be stacked in multiple layers, which greatly reduces storage and transport costs. After installation, cutting of conventional connecting rings through an oxygen welding machine is unnecessary, thus greatly reducing labor and work costs. After knowing the space between the head and the concrete structure The purpose of the present invention is to provide a fastening device for conveying concrete structures in which aesthetics are improved after work by filling with tar or the like.

The present invention for achieving the above object is made of a head portion, a body portion, and a bed portion, the insertion member is inserted into the interior of the concrete structure directly to the external traction force to the concrete structure; And a coupling member having a coupler portion coupled to the head of the insertion member and a coupling ring portion extending vertically in the coupler portion and engaged with a traction hook of an external traction member. Part is characterized in that the fastening device for transporting concrete structures, characterized in that consisting of any one of a rectangular shape, a circular shape with one or more ears, an ellipse shape, a cone shape.

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And, the insertion portion consisting of a head portion, a body portion, and a bed portion, which is inserted into the concrete structure to directly apply external traction force to the concrete structure; And a coupling member having a coupler portion coupled to the head of the insertion member and a coupling ring portion extending vertically in the coupler portion and engaged with a traction hook of an external traction member. The body and the body surrounding the outside; An insertion opening having the same shape as the head portion and into which the head portion is first inserted; A guide groove which is a passage through which the head portion can rotate along; A space part accommodating the head part inserted inwardly through the insertion hole; It is preferably provided in the space portion, the engaging piece for locking the head portion by the Z-axis rotation of the connecting member.

On the other hand, consisting of the head portion, the body portion and the bed portion, the insertion member is inserted into the interior of the concrete structure directly to the external traction force to the concrete structure; And a coupling member having a coupler portion coupled to the head of the insertion member and a coupling ring portion extending vertically in the coupler portion and engaged with a traction hook of an external traction member. The body and the body surrounding the outside; An insertion opening having the same shape as the head portion and into which the head portion is first inserted; It is preferable to include a; guide groove for receiving the head portion inserted inwardly through the insertion hole to guide in one direction and hold the head portion.

Further, it is more preferable that an auxiliary fixing means inserted into the coupler body on one side or both sides of the coupler part is inserted inward to prevent the reverse rotation of the head portion or to prevent the reverse movement of the head portion.

Here, the auxiliary fixing means is a steel ball in close contact with the head portion, an elastic spring connected to the steel ball to provide a predetermined support force, and the tightening bolt for pressing the elastic spring at the same time and inserted into the body of the coupler portion It is preferable to make.

In addition, the coupler is formed on one side or the entire body of the coupler portion, in contact with the surface of the concrete structure to reduce the load applied to the head portion located inside the coupler portion, and a coupler support flange for preventing rotation of the coupler portion is It is more preferable that it is further provided.

And, the head portion of the insertion member is preferably made of an eye bolt or eye nut.

In addition, the coupler portion of the connecting member is made of an eye nut or eye bolt that can be screwed with the head portion, between the coupler portion and the fastening ring portion of the support flange of any one of the shape of a circle, oval, square It is more preferable that is further provided.

On the other hand, the present invention for achieving the above object, consisting of the head portion, the body portion and the bed portion, is inserted into the interior of the concrete structure is configured to apply the external traction force directly to the concrete structure, the head portion Ω It is characterized in that the fastening device for conveying the concrete structure, characterized in that the shape or ring shape is fastened to the towing hook of the external towing member.

Here, the body portion is made of a deformed reinforcement, or preferably a plurality of protrusions formed on the outer periphery of the body portion.

In addition, the bed portion is made to have a predetermined area, it is more preferable that a separate auxiliary base member is further provided on the upper or lower portion of the bed portion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Of course, the scope of the present invention is not limited to the following examples, and various modifications can be made within the scope without departing from the technical gist of the present invention.

1A to 1G are perspective views each showing an embodiment of the insertion member according to the present invention, FIG. 2 is a side cross-sectional view showing a state in which the insertion member is inserted into the concrete structure according to the present invention, and FIGS. 3A to 3E. Is a perspective view, front view, side view, top view, side cross-sectional view of an embodiment of a connecting member according to the present invention, Figures 4a to 4e is a perspective view, front view, side view, top view, of another embodiment of the connecting member according to the invention 5A to 5C are three-dimensional, front and side views of the present fastening device for concrete structures, and FIGS. 6A and 6B are cross-sectional views taken along line AA and BB of FIGS. 5B and 5C, 7A to 7C are cutaway perspective views, a cutaway front view, and a cutaway side view of the main portion of the inserter and the former in which the inserter is coupled according to the present invention, and FIGS. 8A and 8B are views of the fastening device for transporting the present concrete structure; 9 is a perspective view showing a different embodiment of the main part in a state in which the insertion member and the former of FIG. 8A and B are coupled, and FIG. 10 is a state in which the auxiliary fixing means is added to the connection member of FIG. 3A. 11 is a perspective view showing another embodiment of a connecting member according to the present invention, FIG. 12 is a cross-sectional view taken along line CC of FIG. 11, and FIG. 13 is a state in which an insertion member is fastened to the connecting member of FIG. 14 is a perspective view showing the incision of the main portion of Fig. 13, Figure 15a to 15c is a perspective view showing the fastening process of Figure 13 in order, Figure 16a and 16b is inserted in accordance with the present invention 17A and 17B are perspective views illustrating a connection member corresponding to the insertion member of FIGS. 16A and 16B. FIGS. 18A and 18B are views of the insertion member and FIGS. 17A, 16A and 16B. b Connecting element to mold without former A molten example is a perspective view showing a fastening device for transporting concrete structures, Figure 19 is a perspective view showing another embodiment of the fastening device for transporting concrete structures, Figure 20 shows a state in which the fastening device for transporting the concrete structure is used. Fig. 21A to Fig. 21C are front views, side views, and plan views of Fig. 20.

First, the fastening device 1 for transporting the concrete structure is composed of a head part 110, a body part 130, and a bed part 150, and is inserted into the concrete structure 5 to externally pull the traction force. An insertion member 100 directly applied to the concrete structure 5; Coupler portion 210 coupled to the head portion 110 of the insertion member 100, and extends in the vertical direction perpendicular to the coupler portion 210 to engage with the traction hook (3) of the external towing member (not shown) It is configured to include; or having a connection member 200 having a fastening ring 230

Consists of the head 110 and the body 130, and the bed 150, is inserted into the concrete structure 5 is configured to apply an external traction directly to the concrete structure 5, the head Part 110 is composed of a Ω-shaped or ring shape is configured to be coupled to the traction hook 3 of the external traction member (not shown).

More specifically, the head portion 110 of the insertion member 100 is made of a shape in which the ear shape is added to both sides of the circular shape as shown in Figure 1a, or made of a shape with a plurality of ears in a circular shape as shown in Figure 1b Although not shown in the drawing, it is made of any one of a rectangular shape, an ellipse shape, or a cone shape.

And, the body portion 130 of the insertion member 100 is made of a deformed reinforcement (130a) (meaning the reinforcing bar is formed on the round bar surface, as shown in Figure 1c) binding force to the concrete structure (5) It is configured to improve it. However, it is a matter of course that the same effect can be obtained by forming a plurality of protrusions on the outer circumference of the body portion 130 even if not the deformed reinforcement (130a).

In addition, the bed 150 of the insertion member 100 may distribute the load so as not to be separated from the concrete by the tensile force acting on the insertion member 100 as well as improving the bonding force to the concrete structure (5). It consists of a shape with a sufficient area.

Here, the specific shape is configured in a circular or elliptical shape as shown in Figure 1a to 1d, it may be composed of a square plate or other shaped iron plate or the like as shown in Figures 1e and 1f as necessary.

In addition, as shown in FIGS. 1D and 1G, an additional auxiliary base member 500 may be further provided on the upper or lower portion of the bed 150 to maximize the effect. In this case, the auxiliary base member 500 may be configured in multiple stages in the same shape as the bed unit 150 as shown in FIG. 1D or by adding a wire mesh to the lower portion of the bed unit 150 as shown in FIG. 1G.

The insertion member 100 configured as described above is inserted into the concrete structure 5 as shown in FIG. 2. At this time, a part of the head portion 110 and the body portion 130 of the insertion member 100 is inserted into the hemispherical former (former) 7 as shown in Figure 2 the interior of the concrete structure (5) It will not be inserted into. That is, the tip of the head 110 is not exposed to the outside of the surface of the concrete structure (5).

On the other hand, the connection member 200 is a fastening ring coupled to the coupler portion 210 and the towing hook 3 of the external towing member (not shown) is largely fastened to the head portion 110 of the insertion member 100. It is composed of a portion 230.

Here, the coupler portion 210 is made of the same shape as the shape of the body 211 and the head portion 110 surrounding the outside, as shown in Figures 3a to 3e and 4a to 4e for the first time the head It is provided in the space portion 215 and the space portion 215 for receiving the insertion hole 213 is inserted into the portion 110, the head portion 110 inserted inward through the insertion hole 213, Is made of a engaging piece 217 to securely fix the head portion 110 by the Z-axis rotation of the connection member 200,

As shown in Figure 11 and 12, the body 211 surrounding the outside, made of the same shape as the shape of the head portion 110, the insertion hole 213 is inserted into the head portion 110 first, and the insertion hole A guide groove 219 for accommodating the head portion 110 inserted inwardly through a 213 and guiding in one direction, and holding and holding the head portion 110 and a space for accommodating the head portion 110. Section 215. At this time, the insertion port 213 is preferably configured so that the head portion 110 does not escape to the outside if the shape is not exactly matched even if the coupling is slightly loosened by an external impact.

That is, the insertion hole 213 is preferably formed in a shape having a vertical or predetermined angle with respect to the guide groove 219, wherein the head portion after the head portion 110 is inserted into the insertion hole 213 It is preferable that the guide groove 219 be moved by twisting in the Z-axis direction of the 110. That is, the width of the guide groove 219 is preferably narrower than the width of the insertion hole 213.

After the head part 110 finishes the movement along the guide groove 219, the head part 110 is accommodated in the space part 215, and the head part 110 is centered on the Z axis. Preferably, the space 215 is secured to rotate 360 °.

However, the shape of the body 211 should be made to be in close contact with the groove (9) formed by the former (former) (7).

More specifically, the connection member 200 having the coupler portion 210 illustrated in FIGS. 3A to 3E is fastened to the insertion member 100 having the head portion 110 having a rectangular shape in FIG. 1A, and the specific method thereof. 5A to 7C, after inserting the head portion 110 of the insertion member 100 into the insertion hole 213 of the coupler portion 210, the connection member 200 is referred to the Z axis. When rotated to (ie, rotate the connection member 200 relative to the insertion member 100 in one direction), the head portion 110 is moved along the guide groove 219 of the coupler portion 210 Then it is eventually caught by the locking piece 217 is accommodated in the space 215 is no longer rotated.

That is, when one end of the head portion 110 is fixed to the engaging piece 217 as shown in Figure 6a, the head portion 110 is the space portion 215 and the engaging piece 217 of the connection member 200 ) Is fixed so that it will not be released even if external traction is applied.

In addition, the connection member 200 having the coupler portion 210 illustrated in FIGS. 4A to 4E is fastened to the insertion member 100 having the head portion 110 having a plurality of ears in a circular shape of FIG. 1B. 8A, 9B, and 9, the specific method may be fastened and detached by a predetermined rotation in the same manner as in the case of the insertion member 100 having the head portion 110 having the quadrangular shape described above. Do.

On the other hand, as shown in FIG. 10, the head portion 110 is reversed to one or both sides of the body 211 of the coupler portion 210 having an insertion hole 213, a space portion 215, and a locking piece 217. It may be configured by adding an auxiliary fixing means 300 to prevent rotation.

More specifically, the auxiliary fixing means 300 is connected to the steel ball 300a and the steel ball 300a in close contact with the head portion 110, as shown in Figure 10 to provide a predetermined support force Composed of an elastic spring 300b and a tightening bolt 300c for pressing the elastic spring 300b and inserting the elastic spring 300b into the body 211 of the coupler 210.

The auxiliary fixing means 300 configured as described above is inserted into the body 211 of the coupler part 210 so that the head part 110 is spaced inside the coupler part 210 when the concrete structure 5 is transferred. When the reverse rotation from the portion 215 to the guide groove 219 is added to prevent the separation from the connecting member 200 by adding a resistance force.

And, the connecting member 200 having the coupler portion 210 shown in FIGS. 11 and 12 is fastened with the insertion member 100 having the head portion 110 of the rectangular shape of Figure 1a, the fastening state 13 and 14, the specific fastening method is the angle of the head portion 110 of the insertion member 100 and the guide groove 219 of the coupler portion 210 as shown in Figure 15a to 15c. After insertion into the insertion hole 213 is positioned with, and rotates about the Z axis of the head portion 110 to match the width of the guide groove 219, based on the side Y axis of the coupler portion 210 The connection member 200 is moved in one direction, that is, the head 110 of the insertion member 100 is moved along the guide groove 219 of the connection member 200, the space portion 215 The head portion 110 to be accommodated. In the locked state, the head part 110 may rotate 360 ° about the Z axis of the head part 110 in the space part 215.

Here, Figure 15a is a view showing a state in which the head portion 110 of the insertion member 100 is inserted into the insertion hole 213 of the coupler portion 210, Figure 15b is inserted into the insertion hole 213 The head unit 110 is a view showing a state that is guided along the guide groove 219 of the coupler unit 210, Figure 15c is a movement is completed of the insertion member 100 and the connection member 200 A diagram showing a state in which the fastening is completed.

In addition, the connecting member 200 is rotated in one direction based on the Z axis, that is, the head portion 110 of the insertion member 100 so that the lower end of the guide groove 219 and the head portion 110 It is more preferable to increase the contact or locking area.

In addition, the coupler support flange 212 is installed on the opposite side of the insertion hole 213 of the coupler portion 210 when the coupling of the coupler portion 210 and the insertion member 100 is completed, the concrete structure (5) In close contact with the surface of the support force is increased to increase the stability by reducing the load received by the insertion member 100 in close contact with the coupler portion 210.

And, as in the connection member 200 (see Fig. 10) having the above-described coupler portion 210, the auxiliary fixing means 300 consisting of a steel ball (300a), elastic spring (300b), tightening bolt (300c) It is more preferable that the configuration is added to both sides of the body 211 of the coupler portion 210.

By adding the auxiliary fixing means 300, the head portion 110 is the guide before the both sides of the head portion 110 is pressed against the steel ball (300a) to artificially add a predetermined or more external force. Moving in the reverse direction along the groove 219 is prevented from being separated from the connecting member 200.

However, the head portion 110 of the insertion member 100 is a predetermined taper is formed at the lower portion of the head portion 110 is not simply formed in the shape of a square can be smoothly guided and moved along the guide groove 219 at the same time More preferably, it is made to be strengthened.

On the other hand, the head portion 110 of the insertion member 100 may be made of an eye nut or eye bolt as shown in Figures 16a and 16b, of the connecting member 200 is fastened to the insertion member 100 The coupler unit 210 may also be formed of an eye bolt or an eye nut as shown in FIGS. 17A and 17B.

At this time, when the insertion member 100 is installed on the mold 600, a former 7 may be used (not shown), and the insertion member 100 and the connection member 200 as shown in FIGS. 18A and 18B. ) May be directly connected to the mold 600 to be installed without using the former 7.

At this time, between the coupler portion 210 and the fastening ring portion 230 of the connection member 200 as shown in Figure 17a, b and 18a, b support flange 400 having any one of the shape of a circle, oval, square Is preferably provided.

Here, the size of the support flange 400 should be made large the area beam of the groove (9) formed by the former (former) (7).

The reason for placing the support flange 400 configured as described above between the coupler portion 210 and the fastening ring portion 230 is that the support flange during the fastening operation of the insertion member 100 and the connection member 200. 400 is to be in close contact with the outside of the groove 9 to provide a sufficient binding force.

On the other hand, the fastening device for transporting the concrete structure (1) is made of a head portion 110, a body portion 130, and a bed portion 150, as shown in Figure 19 to 21c, concrete structure (5) Is inserted into the interior of the structure is configured to apply an external traction force directly to the concrete structure (5), the head portion 110 is made of Ω shape or ring shape of the traction hook (3) of the external traction member (not shown) and It is configured to be fastened.

That is, as shown in FIG. 19, the fastening device 1 for transporting the concrete structure may be configured to simultaneously perform the roles of the insertion member 100 and the connection member 200 described above.

Here, the head portion 110 is formed in a ring shape as shown in FIG. 19 to be directly coupled to the towing hook 3 of the external towing member (not shown), or the head portion 110 as shown in FIGS. 20 to 21C. It is made of an Ω shape can be directly coupled to the traction hook (3).

In this case, the body portion 130 may be configured in plurality with FIGS. 21A to 21C, and the bed portion 150 may be configured to be bent into two sides.

Of course, the body portion 130 may be made of a deformed reinforcement (130a) or the like as described above, the bed portion 150 may be further provided with a separate auxiliary base member 500 as described above. .

In addition, in the case where the head 110 has a ring shape, the hook-shaped coupler 210 may be applied.

The present invention configured as described above, the traction hook of the external traction member can be easily and easily fastened to the fastening device for transporting the concrete structure during the fastening work for transporting the concrete structure, resulting in the simplification of the fastening work and improved workability Of course, by adding a fixing means such as a locking piece or an auxiliary fixing means or by varying the shape of the insertion hole and the width of the guide groove, solving the problem of the conventional fastening device in which the towing hook is separated by external shock or imbalance during the transfer operation. This prevents the risk of safety accidents, and because the tip of the head is located lower than the surface of the concrete structure, it can be stacked in multiple layers when storing and transporting the concrete structure, which significantly reduces the storage and transport costs. No need for cutting of the linkage, greatly reducing labor and work costs And it may be also provided as well as the effect that the appearance after the operation by giving bridge the space between the head portion and the concrete structure using a mortar, etc. to increase after installation.

In addition, the present invention is not limited to what has been described above and illustrated in the drawings, and of course, more modifications and variations are possible within the scope of the following claims.

Claims (12)

An insertion member comprising a head part, a body part, and a bed part and inserted into the concrete structure to directly apply an external traction force to the concrete structure; And a coupling member having a coupler portion coupled to the head portion of the insertion member and a coupling ring portion extending vertically in the coupler portion and engaged with a traction hook of an external traction member. Coupler portion of the connecting member and the body surrounding the outside; An insertion opening having the same shape as the head portion and into which the head portion is first inserted; A guide groove which is a passage through which the head portion can rotate along; A space part accommodating the head part inserted inwardly through the insertion hole; Fastening device for a concrete structure, characterized in that consisting of; provided on the space portion, the engaging piece for locking the head portion by the Z-axis rotation of the connection member. An insertion member comprising a head part, a body part, and a bed part and inserted into the concrete structure to directly apply an external traction force to the concrete structure; And a coupling member having a coupler portion coupled to the head portion of the insertion member and a coupling ring portion extending vertically in the coupler portion and engaged with a traction hook of an external traction member. Coupler portion of the connecting member and the body surrounding the outside; An insertion opening having the same shape as the head portion and into which the head portion is first inserted; And a guide groove for receiving the head portion inserted inwardly through the insertion hole and guiding in one direction while supporting the head portion. The method according to claim 1 or 2, Fastening device for transporting concrete structure, characterized in that the one side or both sides of the coupler portion is further provided with an auxiliary fixing means inserted inward to prevent the reverse rotation of the head portion, or to prevent the reverse movement of the head portion. The method of claim 3, The auxiliary fixing means is composed of a steel ball in close contact with the head portion, an elastic spring connected to the steel ball to provide a predetermined support force, and a tightening bolt for pressing the elastic spring and inserting it into the body of the coupler portion. Fastening device for transporting concrete structures, characterized in that. The method according to claim 1 or 2, Is formed on one side or the entire body of the coupler portion, and in contact with the surface of the concrete structure to reduce the load applied to the head portion located inside the coupler portion, further provided with a coupler support flange for preventing the rotation of the coupler portion Fastening device for transporting concrete structures, characterized in that the. It is composed of a head portion, a body portion, and a bed portion, is inserted into the concrete structure is configured to apply external traction directly to the concrete structure, The head portion is made of an Ω shape or ring shape is fastened to the towing hook of the external towing member, The body portion is made of a deformed reinforcement, or a concrete structure transfer fastening device, characterized in that a plurality of protrusions are formed on the outer periphery of the body portion. delete delete delete delete delete delete

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