WO2011118925A1

WO2011118925A1 - Anchor structure for preventing a steel wire from being twisted

Info

Publication number: WO2011118925A1
Application number: PCT/KR2011/001649
Authority: WO
Inventors: 이인귀
Original assignee: Lee In-Kwi
Priority date: 2010-03-25
Filing date: 2011-03-10
Publication date: 2011-09-29
Also published as: KR100997672B1

Abstract

The present invention relates to an anchor structure for preventing a steel wire from being twisted, and more particularly, to an anchor structure in which: a steel wire coupled to an anchor is protected by an inner member, a spacer, and a spiral tube, so as to stably extend without being twisted when a casing is rotated; and a protection cap is coupled to the rear end of the steel wire to prevent the steel wire from interfering with machinery when a puncher is operated, thereby preventing accidents from occurring and providing work safety.

Description

Anchor structure to prevent twisting of strand

The present invention relates to an anchor structure that prevents twisting of stranded wire. More specifically, the stranded wire fastened to the anchor body is protected by a lower body, a spacer, and a spiral tube, so that the stranded wire is not twisted when the casing rotates. This is stable, and relates to a removable anchor structure that prevents the twisting of the stranded wire to prevent the safety accident by preventing the phenomenon of the stranded wire caught on the machine when the perforator is working by fastening the protective cap to the rear end of the stranded wire.

In general, permanent anchors are widely used for excavation support systems required for construction of civil engineering-related facilities such as trenches, muds, natural and artificial slopes adjacent to railways and roads, underground structures and tunnels, repairing existing retaining walls, and installing retaining walls. It is used for civil engineering or building construction.

For example, the permanent anchor is a series of reinforcement work through the process of excavation or cutting, and excavation to a stable height that can stand the slope or excavation excavation surface, at the same time construct a surface protection surface and perforate the excavation back Insert anchors and grout them to form reinforcement soils.

That is, the permanent anchor is inserted into the excavation back at a narrow interval to increase the overall shear strength to reinforce the existing ground to form a reinforcement body that acts integrally like a gravity retaining wall.

The construction sequence using the permanent anchor is inserted into the anchor hole (about 10-30 m in length) which is drilled by the drilling equipment (about 105 mm), and then grouted (water + cement) and undergoes a curing period. Construction is performed in order to fix a structure (wall) and an anchor, and apply prestress (tension) and stabilize.

When the conventional permanent anchor is drawn while rotating the casing installed inside the drilling hole, the twisted wire is also twisted while the long connected strand is rotated, and in severe cases, the conduit is torn or burst so that the grout fluid is inserted into the anchor body so that the tension is not made at all. There was this.

In addition, the rear end of the stranded wire is exposed in an unorganized state, so when working with a puncher, there is a problem that safety accidents frequently occur such as worker's hands are injured or severely cut.

In addition, the strand is exposed to the outside and the bending process to insert the hole into the hole was very inconvenient and the appearance was not clean.

The present invention has been made in consideration of various problems as described above, and an object thereof is to provide a removable anchor that prevents twisting of a stranded wire to maximize the tensile force by stably installing the stranded wire fastened to the anchor body without twisting.

In addition, the installation is easy to integrate the appearance of the anchor, and to provide a removable anchor structure to prevent the twisting of the strand to prevent the safety accident of the operator by installing a protective cap to the rear end of the strand.

In order to achieve the above object, the present invention is the upper case having a coupling protrusion formed with a screw thread on the lower outer peripheral surface, the inner space formed with a fixing pin on the upper inner peripheral surface of the guide bar and the outer surface of the guide bar fastened to the upper end of the wedge An anchor body consisting of a lower case having an elastic spring to be fastened; A strand wire fastened by the wedge of the anchor body and having a conduit fastened to an outer surface thereof; A lower body having insertion holes inserted into both sides and inserting holes inserted into both sides of the strand, and through holes formed at regular intervals on both sides of the inserting hole, and having insertion grooves in the upper and lower centers thereof; A spacer which is tightly coupled to the rear face of the inner body and forms a body having semicircular insertion grooves formed up and down, left and right, and a rear face of the body has a coupler having a narrower width than the front face; It is fastened to the coupler of the spacer and the strand is inserted into the spiral tube having a plurality of corrugations; constitutes.

The present invention as described above has various effects as follows.

First, the stranded wire fastened to the anchor body keeps the lower body, the spacer and the spiral tube always horizontal, so that no twisting occurs even when the anchor body rotates. There is an effect that can be performed.

Second, it is easy to install the anchor by forming the inner body, the spacer and the spiral tube installed at the tip of the anchor integrally, and there is no necessity of bending work on the outer surface, which has a neat appearance.

Third, by installing a protective cap at the rear end of the strand, there is an effect to prevent a safety accident in which the worker is injured or cut during work.

1 is a perspective view showing the overall configuration of the present invention

Figure 2 is an exploded perspective view showing the configuration of the anchor body of the present invention

Figure 3 is a perspective view showing the inner body configuration of the present invention

Figure 4 is an enlarged plan view showing the configuration of the bolt hole formed in the inventors inner body

5 is a cross-sectional view showing a state in which the strand is fastened to the inventors load bearing body

Figure 6 is a perspective view showing the configuration of the spacer of the present invention

7 to 8 is a perspective view and a cross-sectional view showing a state in which the spacer is fastened to the spiral tube of the present invention

9 is a perspective view showing another configuration of the present invention

10 is a use state diagram showing a use state of the present invention

EMBODIMENT OF THE INVENTION Hereinafter, the anchor structure which prevents twisting of stranded wire for implementing this invention is demonstrated in detail.

1 is a perspective view showing the overall configuration of the present invention, Figure 2 is an exploded perspective view showing the configuration of the anchor body of the present invention, Figure 3 is a perspective view showing the inner body configuration of the present invention. In the drawing, reference numeral 100 denotes the main body of the anchor which prevents twisting of the strand of the present invention.

The main body 100 is composed of the upper and

lower cases

10 and 20, the anchor body 30 is provided with a wedge 22 in the inner space 21, and the wedge 22 of the anchor body 30 The wire strands 41 are fastened to the outer surface and the wire tube 41 is fastened to the outer surface, and the wire strands 40 are inserted into both sides to prevent the twisting of the strands 40 and the lower body 50 and the lower body 50. While installed on the rear surface of the plurality of strands 40, the spacer 60 is fastened to, and constitutes a spiral tube 70 to connect the spacer 60 to each other.

The anchor body 30 is composed of an upper case 10 and a lower case 20, as shown in Figure 2 attached, the upper case 10 is a coupling protrusion 12 is formed with a screw thread 11 on the lower outer peripheral surface ) Is protruding.

The lower case 20 has an internal space 22 formed with a screw thread 20a on the upper inner circumferential surface and a fixing pin 21 protruding forward to one side of the lower inner circumferential surface.

In addition, the lower end of the outer circumferential surface forms a fastening protrusion 24 having a fastening groove 23 to which the bolt 56 is fastened.

The inner space 22 of the lower case 20 is divided into three pieces and has a locking groove 25 on the inner circumferential surface of the upper side and installs a wedge 27 on which the rubber o-ring 26 is fastened to the outer circumferential surface. .

Then, the guide bar 28 having the locking jaw 28a formed at the bottom is inserted into the locking groove 25 of the wedge 27, and the elastic spring 29 is fastened to the outer circumferential surface of the guide bar 28.

Then, the screw thread 11 formed on the coupling protrusion 12 of the upper case 10 is coupled to the screw thread 20a formed on the upper inner circumferential surface of the lower case 30 to complete the anchor body 30.

The strand 40 is formed by twisting the strands of one strand and the strands of six strands on the outer surface at the center thereof and fastening the conduit 41 to the outer surface thereof.

As shown in the accompanying drawings, FIGS. 3 and 4, the load-bearing body 50 is formed to penetrate an insertion hole 51 into which the long strand 40 is inserted in the longitudinal direction in both sides, and the insertion hole 51. Both sides of the has a reinforcement bar 53 formed with a through hole 52 at regular intervals.

A fastening groove 51a to which the fastening protrusion 24 formed at the lower end of the lower case 20 of the anchor body 30 is fastened at the distal end of the insertion hole 51 to be wider than the diameter of the through hole 52.

The through hole 52 is formed in a rectangular shape, but may be formed in a circular or polygonal shape as needed.

By forming grooves 54 having various shapes on the upper and lower surfaces and the side surfaces of the reinforcement bar 53, the grout liquid injected into the drilling hole is filled and cured into the grooves 54, thereby making the tension more stable. You lose.

Then, bolt holes 55 are formed at both the front and rear ends of the lower body 50 and the bolts 56 are fastened to the bolt holes 55.

At this time, the bolt 56 is inserted into the fastening groove 23 formed in the fastening protrusion 24 of the lower case 20 fastened by the fastening groove 51a of the insertion hole 51 to firmly anchor the anchor body 30. To be fixed.

And in the center of the upper side and the lower side of the lower body 50 is formed a semi-circular insertion groove 57 is fastened the strand 40.

As the insertion hole 51 of the load-bearing body 50, as shown in Figure 5 attached to the stranded wire 40 is inserted through the conduit 41 of the stranded wire 40 in the external impact or ground environment To protect it from damage.

The spacer 60 is made of a synthetic resin material, and as shown in the accompanying drawings, the upper and lower sides of the

semicircular insertion grooves

61 and 62 form a body 63 formed in the longitudinal direction, as shown in Figure 6, the body The front face of the 63 is formed so that the coupler 64 narrower than the rear face protrudes outward.

The upper and lower insertion grooves 61 deeply form the front insertion grooves 61a, and the rear insertion grooves 61b are thinner than the front. The reason is that the depth of the front insertion groove 61a is deeply formed because the coupling hole 64 should be inserted into the spiral tube 70 to be described later together with the strand 40 which is fastened to the upper and lower insertion grooves 61. do.

The rear surface of the spacer 60 is installed in close contact with the rear surface of the lower body 50, wherein the left and right insertion grooves 62 of the spacer 60 coincides with the insertion hole 51 of the lower body 50. It is installed.

The spiral tube 70 has a plurality of spirals 72 formed on an outer circumferential surface thereof and a through hole 71 penetrating therein.

The spiral tube 70 is inserted into the coupling hole 64 of the spacer 60 is fastened to the strand 40 to the through-hole 71 at both ends as shown in Figure 7 and 8 attached to the drawing. To fix it.

The spiral tube 70 serves to connect the two spacers 60 with each other and at the same time to prevent the strand 40 is exposed to the outside to completely protect the conduit 41 of the strand 40 do.

In addition, the present invention is a spiral tube 90 is coupled to the protective cap 80 of the metal material at the front end to the rear end of the strand 40 is fastened to the spacer 60 as shown in FIG. It is used after tightening.

The same spiral 81 as the spiral tube 90 is formed on the outer circumferential surface of the protective cap 80 and has an inclined surface 82 in front.

After inserting the spiral tube 90 into the inner side of the protective cap 80 can be fastened while rotating can be easily fastened without using a separate bolt.

The present invention as described above, as shown in the accompanying drawings, Figures 9 and 10, first, after fastening the anchor body 30, the stranded wire 40 is installed with a fastening groove 51a formed at the tip of the lower body 50; Fix with a bolt 56.

Then, the two spacers 60 are connected to each other by a spiral tube 70, and then the front spacer 60 is coupled to the rear surface of the lower body 50 in front of the spacer 60.

At this time, the strand 40 penetrates the left and right insertion grooves 62 of the spacer 60 connected to the spiral tube 70 and the insertion hole 51 of the lower body 50 to the wedge 27 in the anchor body 30. It is fastened to the lower body 50, the spacer 60, the spiral tube 70 is completed without the main body 100 is firmly combined integrally without being separated.

In this state, when the main body is to be installed in multiple stages, the main body 200 is formed after the main body 200 is formed in the same manner as described above by the space between the strands 40 installed in the spacer 60 of the main body 100. ) Is installed in the vertical direction, and the front end of the main body 200 is installed in close contact with the spacer 60 installed at the rear.

At this time, the strand wire 40 installed in the anchor body 30 of the tip body 100 is a spacer 60 connected to the insertion groove 57 and the spiral tube 70 of the lower body 50 of the main body 200 in the rear 60 ) Is fastened to the upper and lower insertion grooves (61). That is, the four strands 40 are provided in the spacer 60 of the rear main body 200.

The

main body

100, 200 installed in multiple stages as described above is inserted into the drilling hole, and grout liquid is injected into the grout hose.

At this time, the grout liquid is filled into the groove 55 formed on the outer circumferential surface of the lower body 50, and does not penetrate into the spiral tube 70.

When curing is completed after the grouting as described above, tension is applied to the strand 40 that is fastened to the anchor body 30.

At this time, the

main body

100, 200 is installed in multiple stages and the grout liquid is filled into the lower body 50 to distribute the load caused by the pressure of the inside of the drill hole to make the tension stable.

The present invention, even when the wire strand 40 installed in the anchor body to maintain the horizontal state of the spacer 60 connected to the lower body 50 and the spiral tube 70 is always in a horizontal state, even when rotating the casing installed inside the drilling hole, Tension is stable because long strands are not twisted.

In addition, since the perforator is operated after fastening the protective cap 80 having the spiral tube 90 to the rear end of the plurality of strands 40 during casing drawing operation, to prevent safety accidents occurring to the worker to ensure safe operation. .

Claims

Anchor consisting of an upper case having a coupling protrusion formed with a thread on the lower outer peripheral surface, a lower guide having an elastic spring fastened to the outer circumferential surface of the guide bar and a guide bar fastened to the top of the wedge and the wedge into an inner space having a fixing pin formed on the upper inner peripheral face. Sieve;

A strand wire fastened by the wedge of the anchor body and having a conduit fastened to an outer surface thereof;

A lower body having insertion holes inserted into both sides and inserting holes inserted into both sides of the strand, and through holes formed at regular intervals on both sides of the inserting hole, and having insertion grooves in the upper and lower centers thereof;

A spacer which is tightly coupled to the rear surface of the inner body and forms a body having semicircular insertion grooves formed up and down, left and right, and the rear surface of the body has a coupler having a narrower width than the front surface;

An anchor structure for preventing twisting of a stranded wire, comprising: a spiral tube fastened to a coupler of the spacer and inserted into a stranded wire and having a plurality of corrugations.
The method of claim 1,

Anchor structure to prevent twisting of the stranded wire, characterized in that to ensure a safe operation by fastening the protective cap is coupled to the spiral pipe to the rear end of the stranded wire.