KR101921310B1 - Bolts to repair cracks in the structure - Google Patents

Abstract

A bolt for crack repair and reinforcement of a structure is disclosed. The present invention enables a blade structure mounted on the lower part of the head of a screw to directly work on a cracked portion to fix a crack, thereby eliminating the need for an additional process and permanently reinforcing the crack The advantage to be implemented is implemented.

Description

{BOLTS TO REPAIR CRACKS IN THE STRUCTURE}

The present invention relates to bolts for repairing and reinforcing cracks in structures.

Cracks are generated by the impact after the installation, the external force applied continuously, and the aging due to the elapse of time. The generated cracks affect the strength of the structure. If the structure is left without repairing, It will act as a cause of destruction.

Therefore, it is necessary to periodically check the occurrence of cracks, which is a fatal factor that threatens the safety of the structure, and to immediately repair and reinforce the work.

In the conventional work for reinforcing a structure, when a crack is generated, a step of installing a plurality of locking members capable of temporarily fixing a crack around a crack at a crack occurrence region Must be provided. The fixing member prevents the crack from being further extended, and then fixes to the crack site using the fixing screw.

1 is a process flow chart schematically showing a technique for performing maintenance of a structure 10 in which a conventional crack (CR) is generated.

1, a hole (H) is formed in a direction perpendicular to a crack by using a drill (D) and a drill jig (20) in order to repair a portion where a crack (CR) ) Are formed and arranged in a plurality of rows.

(b), thereafter, the foreign material or the residue generated after the drilling operation is removed in the hole (H).

(c) Next, the reinforcing key member K is inserted and arranged in the inside of the arrayed holes H. It is preferable to form a plurality of such key members so as to prevent further progress of cracks CR and to generate a constant clamping force.

(d) Thereafter, the bolt insertion holes H1 and H2 are drilled again using the drill D in order to insert the bolt member in the direction in which the crack is generated by using the bolt B for reinforcement.

(e) Thereafter, an operation of inserting the reinforcing bolts B into the bolt insertion holes H1 and H2 to fix the crack portions is performed.

(f) Such reinforcing bolts B need to be provided with a plurality of key members H3 and H4, and a plurality of reinforcing bolts are inserted and fixed in the direction of the cracks.

However, in such a construction method, it is necessary to arrange the reinforcing key member K as a fixing member inevitably, and a drilling operation is required to fix the reinforcing key member K. As a result, an unnecessary impact is applied to the crack portion, There arises a problem that additionally occurs.

In addition, the construction for inserting the reinforcing key member and the punching operation for inserting the reinforcing key member necessarily takes place, which increases the construction cost and the process time.

In addition, after inserting the reinforcing key member, the drilling operation for inserting the reinforcing bolt is performed again, and the working time is further increased.

In addition, although it is intended to perform reinforcement construction for permanent crack prevention, reliability of the construction can not be ensured due to aging of the fixing member, re-cracking at the site where the cracks are adhered, and the like.

Korean Registered Utility Model No. 20-0446223

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a blade structure, which is mounted on a lower portion of a head portion of a screw, And it is an object of the present invention to provide a bolt for repairing and reinforcing cracks of a structure that does not require an additional process and can implement permanent crack reinforcement in a simple process.

As a means for solving the above-mentioned problems, in an embodiment of the present invention, as shown in Figs. 2 to 4, a body part 100 having a plurality of threaded structures inclined downward around an outer circumferential surface thereof; And a head portion (200) disposed on the body portion and having a tightening groove, wherein the head portion (200) extends from the head portion (200) and protrudes downward, To provide a bolt for crack repair and reinforcement of a structure including two or more blade structures (210).

In this case, the blade structure 210 includes at least two corner portions 211, 212, and 213 that extend downward from the outer circumferential surface of the head portion 200 and converge to the attachment T, And a blade-shaped cutting portion is formed on at least one of the corner portions.

The blade structure 210 according to the embodiment of the present invention is provided in an inner region of the vertical width A formed by the outer circumferential surface of the head portion 200, .

Further, the blade structure 210 may have a cut surface 214 disposed in a direction of the center B of the body 100 among the cutting surfaces implemented by the at least two corner portions, And a first curvature processing unit R1 having a first curvature processing unit R1.

In addition, the bolt for repairing and reinforcing cracks of the structure according to the embodiment of the present invention may include a second curvature processing unit R4 that implements a curved edge portion of the contact interface between the distal end of the body 100 and the blade 210, Can be formed.

Also, the threaded structure provided on the body part may have a structure in which the threaded part of the threaded part is inclined downward on the outer peripheral surface of the body part, and the edge part of the threaded part has the second cutted part of the blade structure.

In addition, the bolt for repairing and reinforcing cracks of the structure according to the embodiment of the present invention may have a structure in which a perforation tip structure 310 for perforating the end portion of the body portion 100 is provided.

In this case, it is possible to further comprise a vortex-shaped strip discharge groove 310a which discharges the strip generated by the operation of the piercing tip structure 310 to the outside, adjacent to the major tip structure 310 .

According to the embodiment of the present invention, the blade structure mounted on the lower part of the head portion of the screw can directly implement the operation of dugging and fixing the crack to the cracked portion, so that no additional process is required and permanent crack reinforcement Can be realized by a simple process.

That is, it is not necessary to perform an additional drilling operation for installing a reinforcing member to reinforce a crack region, and it is possible to prevent expansion of a crack, to directly block the uniformity, to quickly and easily repair and reinforce Advantages can be achieved.

Therefore, the blade structure according to the embodiment of the present invention directly penetrates the crack surface of the structure and a fixed reinforcing operation is realized.

In addition, since the region of the bolt gradually comes in contact with the cracked region during the repair and reinforcement work of the cracks occurring in the structure, the region contacting the inner side of the structure is wider than that formed by the straight line, It is possible to effectively prevent a crack generated in the process of construction because the horizontal component is large as compared with a straight line segment.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process diagram showing a repairing and reinforcing process of a crack occurring in a conventional structure. FIG.
2 is a perspective view illustrating a structure of a bolt for repairing and reinforcing cracks in a structure according to an embodiment of the present invention.
3 is an enlarged view of a main portion of a bolt for repairing and reinforcing cracks of a structure according to an embodiment of the present invention.
4 is a cross-sectional view taken along the line A-A 'in Fig.
5 and 6 are perspective views showing a construction method using a bolt for repairing and reinforcing cracks of a structure according to an embodiment of the present invention.

Hereinafter, the configuration and operation according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description with reference to the accompanying drawings, the same reference numerals denote the same elements regardless of the reference numerals, and redundant description thereof will be omitted. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

FIG. 2 is a perspective view illustrating a structure of a crack repairing and reinforcing bolt (hereinafter referred to as 'the present invention') of a structure according to an embodiment of the present invention. FIG. 3 is an enlarged view of the main part of the present invention, Is a cross-sectional view along the line A-A 'in Fig.

2 to 4, the present invention provides a hair dryer comprising a body part 100 having a plurality of threaded structures inclined downwardly around an outer circumferential surface thereof, a head part 200 disposed on the body part, And at least two blade structures 210 extending from the head 200 and projecting downwardly and having an attachment T at a distal end thereof.

More particularly, the present invention relates to a bolt structure that allows a surface of a cracked structure to be easily pierced, reinforced and repaired, and more particularly, to a bolt structure that extends from a head portion and penetrates a surface of a structure (Hereinafter referred to as " blade structure ").

Therefore, in the general bolt structure, a structure including at least one blade structure projecting downward from the head corresponding to the head portion of the bolt will be included in the gist of the present invention.

Specifically, in the body 100, the legs 300 form perforations on the surface of the structure, and, in a state in which a part of the legs 300 are drawn, the bolts for repairing and reinforcing cracks in the structure according to the embodiment of the present invention, A screw structure having a generally cylindrical shape and inclined downwardly around an outer circumferential surface of the structure may be implemented as a means for drawing out to the outside of the structure after being drawn into the inside of the structure.

The threaded structure formed in the body 100 may have a structure in which the threaded portion of the threaded portion is inclined downward on the outer circumferential surface of the body portion and the edge portion of the threaded portion has the second cutout portion 115 . That is, the threaded structure simultaneously realizes the functions of the tab and the thread, so that the structure can be efficiently pierced.

The head 200 is integrally formed on the upper portion of the body 100. That is, the body 100 has an outer circumferential surface larger than the circumference of the outer circumferential surface, and the center of the lower surface is fixed to the center of the upper surface of the body 100 to be integrally formed.

In particular, a tightening groove 200a, which is recessed downwardly, is formed on the upper surface of the head part 200. The tightening groove 200a is formed in the upper surface of the head part 200 in a state in which the leg part 300 is drawn into the surface of the structure, This is to form a space in which a box, which is a tool used for tightening or loosening, can fit into the head.

In the first embodiment of the present invention, the tightening groove 200a is formed as a hexahedral space. However, the present invention is not limited thereto and various shapes such as a box, which is a tool used for tightening or loosening the bolt, It can be implemented.

In addition, the head part 200 is provided with a blade structure 210 which is a protruding structure extending downward. The blade structure 210 may be embodied as a three-dimensional structure that extends from the head 200, protrudes downward, and has an attachment T at its distal end.

At least one or more of the blade structures 210 may be disposed and the direction of the attachment T protrudes downward in the longitudinal direction of the body portion. When the body portion 100 rotates and moves downward , The attachment (T) comes into contact with the surface of the structure, and the head portion can be easily introduced more efficiently.

That is, when the attachment T touches the surface of the structure and rotates, the structure of the blade structure 210 naturally breaks the surface of the structure and can be inserted into the structure.

That is, when the hole is formed on the surface of the structure by the structure of the perforating tip 210, the body portion 100 enters the structure by the rotational movement of the threaded structure of the body portion, Then, the head 200 is naturally inserted into the space formed by the rotation of the blade structure 210.

2 and 3, the blade structure 210 includes at least two edge portions extending in the lower direction of the outer peripheral surface of the head portion 200 and converging at the attachment T 211, 212, and 213, respectively. Particularly, it is preferable that the cutting portion is formed in at least one of the corner portions. The cutting portion has a blade structure integrally formed with the corner portion and having a sharp edge with a sharp edge, and the inner surface of the structure can be easily cut by rotation.

The blade structure 210 of the present invention may be disposed in the inner region of the vertical width A: a1 to a2 formed by the outer peripheral surface of the head 200, as shown in FIG. That is, in the case of a structure in which the extension T extends outside the region of the horizontal width of the head 200, the attachment T is disposed outside the diameter of the cross section of the head, and the head is inserted into the structure, . Therefore, in order to implement strong insertion and binding force, the attachment T can be arranged in the inner region of the vertical width (A: a1 to a2) formed by the outer peripheral surface of the head portion 200. [

Preferably, the attachment may be located at or coincident with the underside of the outer periphery of the head 200, which may be formed by a blade structure having a width corresponding to the head 200 It is to be able to do.

As shown in FIG. 2, the blade structure of the present invention may have a plurality of blade structure unit pieces arranged at even intervals, but the present invention is not limited thereto.

The blade structure 210 includes at least two corner portions 211, 212, and 213 extending downward from the outer circumferential surface of the head portion 200 and converging at the attachment T, And by the convergence point attached thereto, it is possible to realize a three-dimensional structure as shown in Fig.

That is, the blade structure 210 may include a plurality of cutting surfaces that the at least two corner portions embody.

The cutting surface 214 disposed in the center portion B of the body 100 may be embodied as a first curvature processing portion R1 having a curved surface in the direction of the center of the body portion. The first curvature processing unit R 1 performs rounding on the surface of the blade to facilitate the discharge of the residue generated when cutting the surface of the structure, and to easily dig a surface of the structure.

In this case, when the plurality of blade structures are arranged, the first curvature processing unit R 1 is arranged such that curvature planes are uniformly arranged in one direction, so that the cutting operation can be made more smooth when the rotary cutting operation is implemented.

As shown in FIGS. 2 and 3, in the case of the surface opposite to the first curvature processing portion R1, the curvature of the surface opposite to the curvature of the curvature processing portion R1 is realized, So that the operation can be performed.

The blade structure (three-sided or tetrahedron) shown in Figs. 3 (a) and 3 (b) is one example, and the present invention is not limited thereto, and blade processing for cutting (sharp- edged blade- A three-dimensional structure having a corner portion and a three-dimensional structure having a corner converging structure attached thereto, will be included in the blade structure of the present invention.

The operation of the blade structure of the present invention will be described with reference to FIGS. 2 and 3 (a).

The blade structure 210 is inserted into the structure by a threaded structure formed downwardly around the outer circumferential surface of the body portion 100 and fixed to the center of the upper surface of the body portion 100, And the head portion 200 is further drawn into the inside of the structure.

Therefore, this working example will be described by taking the structure shown in Fig. 3 (a) as an embodiment. The blade structure in this embodiment includes a straight first edge 211 extending straight downward from the periphery of the head 200 and one end connected to the other end of the edge 211, A second edge 212 of a curved line connecting the other end to a position spaced clockwise or counterclockwise from a position of abutting with one end of the first edge 211 in the periphery of the part 200, And a third edge 213 having a curved line connected to the other end of the body 211 at a position where the body 100 and the head 200 are in contact with each other, do.

Since the blade structure 210 is integrally formed with the first and second corners 211 and 213, blade structures (cutting portions) having sharp edges at their ends along the longitudinal direction are formed The legs 300 are inserted into the surface of the structure in a process of fitting the box into the tightening groove 200a of the head and rotating clockwise or counterclockwise.

When the body part 100 is drawn into the inside of the structure, the lower end of the blade 210, i.e., the other end of the first edge 211, the second edge of the second edge 211, 212, and the position where one end of the third component 213 abuts against the surface of the structure.

At this time, stress can be concentrated on an area where the structure touches the surface (the other end of the first corner, one end of the second edge, and one end of the third component come into contact with each other due to point contact with the structure) . So that it is possible to more easily enter the surface of the structure.

The sharp edges of the first and second corners 211 and 213 are integrally formed along the longitudinal direction of the first and second corners 211 and 213 so that the structure is cut inward along the direction of rotation, Can be drawn inward of the cut structure.

Since the blade structure 210 has a tetrahedron shape, the blade structure 210 can be more easily inserted into the inside of the structure. Even when the blade structure 210 is drawn inside the structure, the area contacting the inside of the structure widens As a matter of course, since the horizontal component is larger than that formed by the straight line edge, there is an effect that the crack generated in the process of construction can be effectively prevented.

Referring to Fig. 4, this shows a cross-sectional view along the line A-A 'in Fig.

Referring to FIG. 4, a stress concentration preventing groove 100a is formed in a rim region where the head portion 200 and the body portion 100 are in contact with each other. The stress concentration preventing groove 100a is recessed inwardly. In order to repair the cracks in the structure, the crack repair and reinforcement bolt 50 of the structure according to the first embodiment of the present invention is inserted into the recess 100a, It is possible to prevent cracks from being generated due to the concentration of stress in the edge region where the body portion 100 and the head portion 200 of the crack repairing and reinforcing bolt 50 of the structure according to the embodiment are in contact with each other.

More specifically, the present invention is a second curvature processing unit R4 for realizing curvature of a portion where the above-described stress concentration preventing groove, which is the edge portion of the contact interface of the blade 210, So that it can be formed into a structure to be implemented.

That is, the present invention is characterized in that the contact portion of the distal end portion of the body portion and the contact edge portion of the blade edge has a second curvature processing portion that realizes an edge portion with a curvature, and when the wave is crushed on the surface of the structure, It is possible to facilitate the dispersion and to prevent secondary cracks.

The leg 300 of the present invention shown in FIG. 4 is provided with a piercing tip structure 310 for piercing the end of the body part 100, and adjacent to the piercing tip structure 310, Shaped strip discharge groove 310a, which discharges the strip generated by the operation of the stripper 310, to the outside.

The leg portion 300 is integrally formed by being fixed to the lower center of the body portion 100. The leg portion 300 is formed in a shape in which the circumference decreases gradually from the outer circumferential surface of the upper surface to the lower surface thereof so as to be easily inserted into the surface of the structure. So that the perforation tip structure 310 can be implemented at the end thereof.

5 and 6 are perspective views showing a construction method using a bolt for repairing and reinforcing cracks of a structure according to an embodiment of the present invention.

5, when the periphery of the cracked region of the structure is smaller than the periphery of the body portion 100 of the crack repairing and reinforcing bolt 50 of the structure according to the first embodiment of the present invention, In the leg of the bolt 50 for repairing and reinforcing cracks of the structure according to the embodiment of the present invention, the piercing tip structure is arranged to be in contact with the center of the region where the structure is cracked.

Thereafter, the reinforcing bolt (50) of the present invention is inserted into a region where the structure is cracked by rotating the box by fitting it into the tightening groove. At this time, since the blade structure is formed on the bottom surface of the head of the reinforcing bolt 50 of the present invention, when the reinforcing bolt 50 is pulled in by the blade easily penetrating and fixing the peripheral surface of the outer peripheral surface of the crack- It acts to cope with the force that is going on.

6, when the circumference of the cracked region of the structure is larger than the circumference of the outer circumferential surface of the body portion 100 of the crack repairing and reinforcing bolt 50 of the structure of the present invention, As a result, a plurality of reinforcing bolts 50 can be connected to prevent cracks.

In this case, particularly, in a region where the structure is cracked in the construction process and the region where the pore member 30 is in contact with, it is environmentally friendly with a low volatile organic component, and can be used for high insulation, impact resistance, It is also possible to apply a mold release material such as benzoin to finish a more stable anti-cracking construction.

In the foregoing detailed description of the present invention, specific examples have been described. However, various modifications are possible within the scope of the present invention. The technical idea of the present invention should not be limited to the embodiments of the present invention but should be determined by the equivalents of the claims and the claims.

100:
100a: stress concentration preventing groove
200a: Fastening groove
200: Head
210: blade structure
211, 212, and 213:
300: leg
310: Perforation team structure
310a: strip discharge groove
R1: first curvature processing unit
R4: second curvature processing unit

Claims (8)

A body portion (100) having a plurality of threaded structures inclined downwardly around an outer circumferential surface; And
And a head part (200) disposed on the body part and having a tightening groove,
At least two blade structures (210) extending from the head (200) and projecting downwardly and having an attachment (T) at the distal end,
The blade structure (210)
And at least two corner portions (211, 212, 213) extending in the lower direction of the outer peripheral surface of the head portion (200) and being converged by the attachment (T)
Wherein at least one of the corner portions is provided with a blade-shaped cutting portion,
(A) formed by the outer peripheral surface of the head part (200)
A cutting surface 214 disposed in a direction of a central portion B of the body portion 100 among the cutting surfaces implemented by the at least two corner portions,
And a first curvature processing unit (R1) having a curved surface in a direction of a central portion of the body portion.
delete delete delete The method according to claim 1,
A second curvature processing unit R4 that curves the edge portions of the body portion 100 and the contact interface edge portions of the blade structure 210;
Lt; / RTI >
Crack repair and reinforcement bolts of structures.
The method of claim 5,
Wherein the screw structure provided on the body portion comprises:
Wherein the threaded portion of the threaded portion is provided with a second cutting portion having a blade structure,
Crack repair and reinforcement bolts of structures.
The method of claim 6,
And a piercing tip structure (310) for piercing is provided at the distal end of the body part (100)
Crack repair and reinforcement bolts of structures.
The method of claim 7,
(310) adjacent to the piercing tip structure (310) and discharging the strip to the outside,
A strip discharge groove 310a of a vortex shape is realized,
Crack repair and reinforcement bolts of structures.

Images