KR20120116767A - Steel strand extension device having angle adjustment anchor bracket - Google Patents

Abstract

PURPOSE: A steel strand extension device having an angle adjustable anchor bracket is provided to extend the steel strand while maintaining the horizontal state of a through hole and a steel strand. CONSTITUTION: A steel strand extension device having an angle adjustable anchor bracket comprises first and second anchor brackets(130, 140), first and second fastening pieces(150, 160), a connecting piece(170), a rotation guide(180), an anchor head(10), a gripping piece(20), a rubber ring, a connector, a tension guide bar, a fixing member(60), a hydraulic cylinder(70), and a backing plate(80). The first and second anchor brackets comprise rotary shaft insertion holes(131, 141) and bolt holes(132, 142). The first and second fastening pieces are coupled with and support the first and second anchor brackets. The rotation guide is inserted to the rotary shaft insertion holes to be rotated. The anchor head supports a wedge assembly. The gripping piece holds the exterior surface of the anchor head. The rubber ring is inserted in the coupling groove of the gripping piece. The connector comprises an insertion groove for the insertion of the projection of the gripping piece. The hydraulic cylinder lifts the fixing member.

Description

Steel Strand Extension Device having Angle adjustment anchor bracket

The present invention relates to a tension wire tensioning device having an angle adjustment anchor bracket, and in particular, the structure is so that the strand can be stretched without bending even if the inclination of the strand inserted into the drilling hole is changed according to the angle of the drilling hole drilled in the ground An improved stranded tension device is disclosed.

Ground anchor is a fixing device which is essential for civil engineering or building construction, and is used for fixing various structures or buildings to the ground, or supporting walls which are installed so that the side walls of the ground formed by excavation do not collapse. It is used to fix it to the side wall.

The ground anchor is inserted into a drilled hole drilled into the ground and then fixed by a grout to firmly fix the structure, the building, or the support wall at the corresponding position.

Figure 1 schematically shows an example in which a conventional ground anchor is constructed. As shown in Fig. 1, the ground anchor is provided to support the supporting wall 5 so that the side wall W generated by excavating the ground S does not collapse.

Forming a drilled hole (4) inclined with respect to the side wall (W), inserting the strand (1) in the drilled hole (4) and injecting grout (13, grout) into the drilled hole (4) ) Secures the inside of the drilling hole (4), the strand (1) protruding out of the side wall (W) passes through the bracket 12, the anchor head 11, and the wedge assembly 14, the wedge assembly ( The stranded wire 1 extending from 14) is pulled by a separate stranded tensile machine (not shown).

By the way, as shown in Fig. 2, in the case where the drilling holes 4 are formed at different angles in the ground, the conventional bracket 12 is supported in a state where the strand is bent (see " A " in Fig. 2). . It is difficult to apply an appropriate load to the strand when the strand is pulled by the strand tensioner while the strand is bent, and the anchor head 11, the wedge assembly 14, and the bracket 12 that support the strand after tension are subjected to uneven load. There is a problem that the structure is changed by the damage.

The present invention has been made to solve the above problems, and provided with an angle bracket for adjusting the angle so that the strand can be maintained in a horizontal state with the perforation hole even when the angle is formed with respect to the ground is different. It is an object to provide a strand tension device.

The strand extension device having an angle adjusting anchor bracket according to the present invention for achieving the above object, the first anchor bracket is formed, the first anchor bracket is formed spaced apart at regular intervals in the vertical direction; A second rotation shaft insertion hole is formed at a position corresponding to the first rotation shaft insertion hole, a second bolt hole is formed at a position corresponding to the position at which the first bolt hole is formed, and is disposed in parallel with the first anchor bracket Anchor bracket; A first fastening piece detachably coupled to an upper portion of the first and second anchor brackets, and having first and second fastening holes formed at positions corresponding to the first and second bolt holes; A second fastening piece which is detachably coupled to a lower portion of the first and second anchor brackets, respectively, and has third and fourth fastening holes formed at positions corresponding to the first and second bolt holes; A connection piece disposed between the first and second anchor brackets and fixed to the first and second anchor brackets; A first guide hole through which the strand passes, and a rotation guide rotatably inserted into the first and second rotation shaft insertion holes; An anchor head disposed on an upper side of the rotation guide, and having a locking groove formed on an outer circumferential surface thereof, the wedge assembly holding a stranded wire fastened and supported by the wedge assembly; A plurality of gripping fragments surrounding the outer circumferential surface of the anchor head, and having a locking jaw formed at the lower end of the inner circumferential surface and a protrusion formed at the upper end of the inner circumferential surface, and having a coupling groove formed along the circumferential direction of the outer circumferential surface; A rubber ring inserted into the coupling groove of the plurality of grip pieces; A connector having an insertion groove in which the protrusion is inserted along a circumferential direction; A tension guide rod having one end coupled to the connector; A fixing member coupled to the other end of the tension guide rod; A hydraulic cylinder through which the tension guide rod penetrates is formed and is disposed between the fixing member and the connector to lift the fixing member; The tension guide rod has an insertion hole through which an insertion hole is inserted, and has a seating plate on which the hydraulic cylinder is seated, a support leg supporting the seating plate, and a support plate having a mounting groove into which the first and second anchor brackets are inserted. It is characterized by.

In addition, a second guide hole through which the strand is passed is formed in the center, it is preferably provided with a load cell disposed between the anchor head and the rotation guide to measure the load applied when the strand is tensioned.

The upper end of the first fastening piece may include a first bent part including a first extension part extending in a horizontal direction and a second extension part extending downward from an end of the first extension part, and an upper end part of the second fastening piece And a second bent portion including a third extension portion extending in the horizontal direction and a fourth extension portion extending downward from an end of the third extension portion.

The strand strand tensioning device having an angle adjusting anchor bracket according to the present invention may be stretched in a state in which the strand is kept horizontal with the boring hole even when the angle at which the boring hole is formed with respect to the ground is different.

In addition, since the load applied to the stranded wire can be measured by the load cell, it provides an effect of accurately applying as much load to the stranded wire as desired.

In addition, when the wire tension device according to the present invention is mounted on the "H" beam provided in the construction site, it can be easily mounted using the first and second bent parts formed on the first and second fastening pieces, and is placed in the vertical direction " When the H " beams are different from each other, the first and second fastening pieces can adjust their vertical distance by using the first and second bolt holes.

In addition, the anchor head is gripped by using a plurality of grip pieces, and a connector and a tension guide rod are connected to the plurality of grip pieces, and the hydraulic cylinder moves the anchor head upward while the tension guide rod is inserted into the hydraulic cylinder. Since the strand is tensioned, the strand may be stretched even in a relatively narrow workspace around the anchor head. That is, the tension guide rod is inserted into the hydraulic cylinder, the hydraulic cylinder is located directly above the anchor head does not require excessive work space around the anchor head.

In addition, the plurality of gripping fragments holding the anchor head is coupled to each other rubber ring, each of the lower end of the gripping fragment is formed with a locking jaw caught in the locking groove of the anchor head but the locking jaw is inclined thinner toward the lower side Lose. Therefore, when a plurality of holding pieces coupled by rubber rings are approached from the upper side of the anchor head and the locking jaws of the holding pieces are inserted into the locking grooves of the anchor head, the respective holding pieces are joined by the rubber rings at their lower ends. As the outer circumferential surface of the anchor head slides along the inclined surface while being opened, the locking jaw is easily inserted into the locking groove to improve workability.

1 is a view schematically showing a construction example of a conventional ground anchor,
2 schematically illustrates a problem of a conventional bracket;
Figure 3 is an exploded perspective view of the wire tension device according to an embodiment of the present invention,
4 is a coupling diagram of FIG.
5 is an exploded perspective view of the main part of FIG. 3;
6 and 7 is a view showing the operating state of the wire tension device according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is an exploded perspective view of the wire tension device according to an embodiment of the present invention, Figure 4 is a combined view of FIG. Figure 5 is an exploded perspective view of the main portion of Figure 3, Figure 6 and Figure 7 is a view showing the operating state of the strand tension device according to the embodiment of the present invention.

3 and 4, the strand extension device according to an embodiment of the present invention, the first anchor bracket 130, the second anchor bracket 140, the first fastening piece 150, the second fastening piece 160 ), Connecting piece 170, rotation guide 180, anchor head 10, gripping section 20, rubber ring 30, connector 40, tension guide rod 50, fixing member 60, hydraulic A cylinder 70, and a backing plate 80.

The first and second anchor brackets 130 and 140 are plate members arranged in parallel to each other, and support other components constituting the present invention and are installed in close proximity to the drilling hole.

A first rotation shaft insertion hole 131 is formed in the first anchor bracket 130, and a first bolt hole 132 is formed to be spaced apart at regular intervals in a vertical direction.

The second anchor bracket 140 has a second rotation shaft insertion hole 141 is formed at a position corresponding to the first rotation shaft insertion hole 131, the position corresponding to the position where the first bolt hole 132 is formed The second bolt hole 142 is formed. That is, the first and second anchor brackets 130 and 140 are disposed to face each other, and a plurality of the first and second bolt holes 132 and 142 are formed in the vertical direction.

The first fastening piece 150 is detachably coupled to the upper portions of the first and second anchor brackets 130 and 140, and the first and second fastening holes at positions corresponding to the first and second bolt holes 132 and 142. 151 and 152 are formed.

The first fastening piece 150 has a first sub-section 153 which is placed in a direction in which the first and second anchor brackets 130 and 140 are spaced apart from each other, and two first protruding pieces which protrude vertically from the first sub-section 153. 154, and the first and second fastening holes 151 and 152 are formed in the first protruding pieces 154, respectively. The bolts are inserted into the first and second bolt holes 132 and 142 and the first and second fastening holes 151 and 152 to fasten the first and second anchor brackets 130 and 140 and the first fastening piece 150.

In addition, in the present embodiment, the upper end of the first fastening piece 150 is provided with a first bent portion (200). The first bent part 200 includes a first extension part 201 extending in a horizontal direction and a second extension part 202 extending downward from an end of the first extension part 201. The first bent part 200 is provided to mount the first and second anchor brackets 130 and 140 on the “H beam” installed in the support wall provided at the entrance side of the drilling hole.

The second fastening piece 160 is detachably coupled to the lower portions of the first and second anchor brackets 130 and 140, respectively, and the third and fourth fastening portions 160 are fastened to positions corresponding to the first and second bolt holes 132 and 142. Balls 161 and 162 are formed.

The second fastening piece 160 includes a second sub-section 163 in which the first and second anchor brackets 130 and 140 are spaced apart from each other, and two second protrusions vertically protruding from the second sub-section 163. 164, and the third and fourth fastening holes 161 and 162 are formed in the second protruding pieces 164, respectively. The bolts are inserted into the first and second bolt holes 132 and 142 and the third and fourth fastening holes 161 and 162 to fasten the first and second anchor brackets 130 and 140 and the second fastening piece 160.

In addition, in the present embodiment, the upper end of the second fastening piece 160 includes a second bent portion 210. The second bent part 210 includes a third extension part 211 extending in a horizontal direction and a fourth extension part 212 extending downward from an end of the third extension part 211.

The second bent part 210 is provided to mount the first and second anchor brackets 130 and 140 on the “H beam” installed in the support wall provided at the inlet side of the drilling hole together with the first bent part 200. .

The connecting piece 170 maintains a constant distance between the first and second anchor brackets 130 and 140 together with the first and second fastening pieces 150 and 160, and the structure of the first and second anchor brackets 130 and 140 when the strand is stretched. It serves to support the first and second anchor brackets 130 and 140 so as not to change.

The connecting piece 170 is disposed between the first and second anchor brackets 130 and 140 and both ends thereof are fixed to the first and second anchor brackets 130 and 140. In the present embodiment, two connecting pieces 170 are provided, but the number and shape of the connecting pieces 170 may be variously changed.

The rotation guide 180 has a first guide hole 181 through which the strand extending from the drilling hole passes, and is rotatably inserted into the first and second rotation shaft insertion holes 131 and 141.

Therefore, when the angle of inclination with respect to the ground of the drilling hole is changed, the rotation guide 180 is rotated in the state inserted into the first and second rotation shaft insertion holes (131, 141) to guide the strand to extend in a straight line without bending.

Referring to FIG. 5, the anchor head 10 is disposed above the rotation guide 180, and a locking groove 11 is formed on an outer circumferential surface thereof so that the plurality of grip pieces 20 may be coupled thereto. .

In the present embodiment, the anchor head 10 has a lower outer circumferential surface thereof is smaller in diameter than an upper outer circumferential surface, and a thread step 12 is formed on the upper outer circumferential surface thereof. After the tension is made by the tensioning device according to the present invention, the head cap 120 is coupled to the screw step 12.

A plurality of holes are formed in the anchor head 10, and the holes have a truncated conical shape that decreases in diameter toward the ground (S) side, and the wedge assembly 2 corresponding to the shape of the holes is inserted into the holes. The strand 1 is supported by the anchor head 10 in a state of being fastened to the wedge assembly 2.

The holding piece 20 is a portion for holding the outer peripheral surface of the anchor head 10, it consists of a plurality. In the present embodiment, three holding pieces 20 are provided, and when the three holding pieces 20 are coupled to each other, the outer peripheral surface of the anchor head 10 is completely wrapped.

Each grip piece 20 wraps the outer circumferential surface of the anchor head 10 by 120 degrees. A locking jaw 21 is formed at the lower end of each of the gripping fragments 20, and a protrusion 22 inserted into the connector 40 is formed at the upper end.

The locking jaw 21 is inclined to become thinner toward the lower side. That is, it is provided with the inclined surface 21a which becomes closer to the outer peripheral surface of the holding piece 20, and becomes thinner toward the lower side.

When the grip piece 20 approaches the anchor head 10 from the upper side, the lower end of the grip piece 20 is opened and the locking step of the grip piece 20 is caught in the locking groove 11 of the anchor head 10. This is to make it easy to catch (21).

In addition, coupling grooves 23 are formed on the outer circumferential surface of each gripping segment 20 at the same height so as to be coupled to each other by a rubber ring 30, and coupled to the outer circumferential surface of the upper end of each gripping segment 20 in this embodiment. Grooves 23 are formed.

The outer circumferential surface of the connector 40 is formed along the circumferential direction in the insertion groove 41 into which the protrusion 22 of the gripping segment 20 is inserted, and a coupling hole in which the tension guide rod 50 is coupled to the center portion is formed. The threaded hole is formed in the coupling hole.

One end of the tension induction bar 50 is connected to the connector 40, the other end opposite the one end of the fixing member 60 is coupled. In this embodiment, one end and the other end of the tension guide rod 50 is formed with a screw step, screwed with the connector 40 and the fixing member 60, the center is a hole extending in the longitudinal direction Is formed.

5 and 6, the hydraulic cylinder 70 has a through hole 71 through which the tension guide rod 50 is inserted, and is formed at the center thereof. Ascending and lowering inner cylinder 72 is coupled, the outer circumferential surface is formed with an inlet 73 and outlet 74 through which fluid 110 is introduced and discharged.

In the present embodiment, the outer circumferential surface of the tensile induction bar 50 is in contact with the inner circumferential surface of the through hole 71, and the fixing member 60 is coupled to the other end of the tensile induction bar 50, and the fixing member ( 60 and the support plate 90 is coupled between the upper end of the hydraulic cylinder (70).

The support plate 90 is formed to a size such that the upper end of the inner cylinder 72 can push the support plate 90 when the inner cylinder 72 is raised.

The support plate 80 is formed with a mounting groove 84 into which the first and second anchor brackets 130 and 140 are inserted, and the hydraulic cylinder 70 is seated. The support plate 80 includes a seating plate 81 formed at a center thereof with an insertion hole 83 through which the tension guide rod 50 is inserted, and a support leg 82 supporting the seating plate 81. Is done.

On the other hand, the strand extension device having an angle adjustment anchor bracket according to an embodiment of the present invention, further comprises a load cell 190.

The load cell 190 is for measuring the load applied to the stranded wire when the stranded wire is tensioned, and a second guide hole 191 through which the stranded wire passes is formed in the center. The load cell 190 is disposed between the anchor head and the rotation guide 180.

The operation of the load cell 190 is to measure the load applied using the Wheatstone bridge, the specific method of which is already known, so a detailed description thereof will be omitted.

Hereinafter, the operation of the strand extension device having an angle adjusting bracket according to the present embodiment by the above configuration in detail.

The strand extension device according to an embodiment of the present invention is installed in an "H beam" provided on a support wall provided at the inlet side of the drilling hole (see Fig. 1).

The first and second anchor brackets 130 and 140 mounted with the rotation guide 180 are mounted on the H beams placed in the vertical direction. Since the intervals of the H beams installed on the upper and lower sides are different for each construction site, the positions of the first and second fastening pieces connecting the first and second anchor brackets 130 and 140 are adjusted to the intervals of the H beams placed in the vertical direction.

The first and second bolt holes 132 and 142 and the first and second fastening holes 151 and 152 are fitted to fasten the first and second anchor brackets and the first fastening piece 150, and are spaced apart from the H beam in the vertical direction. In accordance with the second fastening piece 160 is fastened.

Subsequently, the first and second anchor brackets 130 and 140 are installed by mounting the first and second bent parts 200 and 210 formed on the first and second fastening pieces to the respective H beams. In this case, the strand extending from the drilling hole to pass through the first guide hole 181 of the rotation guide 180.

Subsequently, the load cell 190 is disposed above the rotation guide 180, and the anchor head 10 is disposed above the load cell 190. At this time, the wedge assembly is coupled to the strand, so that the wedge assembly is fired in the anchor head (10).

The connector 40 is coupled to the upper end of the grip piece 20. The protruding jaw formed at the upper end of the gripping segment 20 is inserted into the insertion groove 41 of the connector 40, and the gripping segments 20 are adjacent to each other.

A plurality of grip pieces 20 adjacent to each other is coupled to each other using a rubber ring (30). Since the coupling grooves 23 are formed at the same height as the upper end portions of the respective gripping fragments 20, the rubber rings 30 are fitted into the coupling grooves 23.

Subsequently, the plurality of grip pieces 20 coupled by the rubber ring 30 are coupled to the anchor head 10. At this time, while approaching the gripping fragments 20 from the upper side of the anchor head 10, the lower end of the gripping fragments 20 is opened by the inclined surface 21a of the locking projection 21 formed on the lower end of the gripping fragments 20 The locking jaw 21 of the gripping piece 20 is inserted into the locking groove 11 of the anchor head 10.

Subsequently, one end of the tension guide rod 50 is screwed into the connector 40. Subsequently, the tension guide rod 50 is inserted into the insertion hole 83 of the support plate 80 on which the hydraulic cylinder 70 is seated. The mounting groove 84 formed at the lower end of the support plate 80 is inserted into the first and second anchor brackets 130 and 140 to be seated.

Subsequently, the hydraulic cylinder 70 is mounted on the seating plate 81 of the support plate 80, and the support plate 90 is fitted into the tension guide rod 50 protruding from the through hole 71 of the hydraulic cylinder 70. The end of the tension guide rod 50 protruding from the support plate 90 is screwed and fixed to the fixing member 60.

When the installation of the tensioning device is completed through the above process, the fluid 110 is supplied to the hydraulic cylinder 70 to raise the inner cylinder 72 to tension the strand wire 1.

Specifically, when the inner cylinder 72 is raised by the hydraulic cylinder 70, the inner cylinder 72 raises the support plate 90, and the fixing member 60 is lifted by the support plate 90.

Since the fixing member 60 is fixed to the tensile induction bar 50, the tension induction bar 50 is raised together with the fixing member 60, and the plurality of gripping segments 20 connected to the connector 40 are lifted up. 10) the strand 1 is lifted by lifting it. When the anchor head 10 is lifted, the support piece 100 is inserted as much as the space to maintain the tensile state of the strand 1.

In this case, the load applied to the stranded wire 1 is measured by the load cell 190 to be understood by the contractor, and provides data that can compare the load applied to the stranded wire 1 of another drilled hole.

As such, in the strand extension device having the angle adjusting anchor bracket according to the embodiment of the present invention, the rotation guide 180 rotates with respect to the first and second anchor brackets 130 and 140 even when the angles at which the holes are formed are different with respect to the ground. As a result, the strand can be stretched while being kept horizontal with the drilled hole.

In addition, since the load applied to the stranded wire can be measured by the load cell 190, it provides an effect that can accurately apply the load to the stranded wire as much as desired.

In addition, when the wire strand tension device according to the present invention is mounted on the "H" beam provided in the construction site, it can be easily mounted using the first and second bent parts (200, 210) formed in the first and second fastening pieces, vertically up and down When the distances of the "H" beams placed in the direction are different from each other, the first and second fastening pieces may adjust the vertical distance by using the first and second bolt holes 132 and 142.

In addition, the plurality of gripping fragments 20 hold the anchor head 10, connect the connector 40 and the tension guide rod 50 to the gripping fragment 20, the tension induction rod ( 50) saves work space by interpolating. That is, since the hydraulic cylinder 70 is located directly above the anchor head 10 with the tension guide rod 50 inserted therein, it does not dedicate excessive working space around the anchor head 10. It provides an effect that can easily stretch the strand (1) without.

In addition, when engaging the gripping fragments 20 to the anchor head 10, once all of the outer peripheral surface of the anchor head 10 is wrapped by using a plurality of gripping fragments 20 partially surrounding the outer peripheral surface of the anchor head (10) Since the gripping fragments 20 are coupled to each other by the rubber ring 30, the lower end of the gripping fragments 20 is slightly widened when the gripping fragments 20 coupled to each other on the upper side of the anchor head 10 are slightly opened. 10, it is possible to easily fasten the plurality of grip pieces 20 to the anchor head (10).

In addition, the locking jaw 21 formed at the lower end of each gripping segment 20 may be slidably contacted with the outer peripheral surface of the upper end of the anchor head 10 when the gripping segment 20 approaches the anchor head 10 from above. Since the photo inclined surface (21a) is provided, it provides an effect to smoothly move to the lower side of the anchor head 10 of the gripping section (20).

In the above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and many other modifications can be provided without departing from the scope of the present invention.

10 ... Anchor head 11 ... Hanging groove 20 ... Holding grip
21 ... Jamming 22 ... Projection 23 ... Coupling groove
30 ... Rubber ring 40 ... Connector 41 ... Insert groove
50 ... tension guide rod 60 ... holding member 70 ... hydraulic cylinder
71 ... through hole 80 ... support plate 81 ... seating plate
82 ... support leg 83 ... insertion hole 84 ... mounting groove
90 ... support plate 130 ... first anchor bracket
131 ... 1st rotation shaft insertion hole 132 ... 1st bolt hole
140 ... 2nd anchor bracket 141 ... 2nd rotation shaft insertion hole
142 ... 2nd bolt hole 150 ... 1st fastener 151 ... 1st fastener
152 .. 2nd fastener 153 ... 1st subsection 154 ... 1st protrusion
160 ... 2nd fastener 161 ... 3rd fastener 162 ... 4th fastener
163 ... 2nd subintersection 164 ... 2nd protrusion 170 ... Connection
180 ... Rotation guide 181 ... First guide hole 190 ... Load cell
191 ... 2nd guide hole 200 ... 1st bend 201 ... 1st extension
202 ... second extension 210 ... second bend 211 .. third extension
212 ... Fourth Extension

Claims (3)

A first anchor bracket 130 formed with a first rotation shaft insertion hole 131 and spaced apart from each other in a vertical direction by a first bolt hole 132;
The second rotation shaft insertion hole 141 is formed at a position corresponding to the first rotation shaft insertion hole 131, and the second bolt hole 142 is formed at a position corresponding to the position where the first bolt hole 132 is formed. A second anchor bracket 140 formed in parallel with the first anchor bracket 130;
The first fastening piece is detachably coupled to the upper portions of the first and second anchor brackets 130 and 140, respectively, and the first and second fastening holes 151 and 152 are formed at positions corresponding to the first and second bolt holes 132 and 142. 150;
Second fastening pieces that are detachably coupled to the lower portions of the first and second anchor brackets 130 and 140, respectively, and have third and fourth fastening holes 161 and 162 formed at positions corresponding to the first and second bolt holes 132 and 142, respectively. 160;
A connection piece 170 disposed between the first and second anchor brackets 130 and 140 and fixed to the first and second anchor brackets 130 and 140;
A first guide hole 181 through which the strand passes, and a rotation guide 180 rotatably inserted into the first and second rotation shaft insertion holes 131 and 141;
An anchor head disposed on an upper side of the rotation guide 180 and having a locking groove formed on an outer circumferential surface thereof, the wedge assembly holding a stranded wire fastened and supported by the wedge assembly;
The outer circumferential surface of the anchor head 10 is wrapped around the lower end of the inner circumferential surface. A plurality of gripping fragments 20 in which grooves 23 are formed;
A rubber ring 30 inserted into the coupling groove 23 of the plurality of grip pieces;
A connector 40 having an insertion groove 41 into which the protrusion 22 is inserted along a circumferential direction;
A tension induction rod having one end coupled to the connector 40;
A fixing member 60 coupled to the other end of the tensile induction bar 50;
A through-hole 71 through which the tension guide rod 50 penetrates, and is disposed between the fixing member 60 and the connector 40 to lift the fixing member 60;
The tension guide rod (50) has an insertion hole (83) through which it is inserted and has a seat plate (81) on which the hydraulic cylinder (70) is seated, and a support leg (82) for supporting the seat plate (81). And a support plate (80) having a support plate (80) formed with a mounting groove (84) into which the first and second anchor brackets (130,140) are inserted. The method of claim 1,
A second guide hole 191 through which the strand is passed is formed in the center, and is provided with a load cell 190 disposed between the anchor head and the rotation guide 180 to measure a load applied when the strand is stretched. A strand wire tension device having an angle bracket for angle adjustment. The method according to claim 1 or 2,
An upper end portion of the first fastening piece 150 includes a first extension part 201 extending in a horizontal direction and a second extension part 202 extending downward from an end of the first extension part 201. 1 bend section 200,
An upper end portion of the second fastening piece 160 includes a third extension part 211 extending in the horizontal direction and a fourth extension part 212 extending downward from an end of the third extension part 211. A twisted wire tensioning device having an anchor bracket for angle adjustment, characterized by having two bent portions 210.

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