KR101852082B1 - Re-tensioning anchorage device - Google Patents

Abstract

The present invention relates to a re-tensioning anchoring apparatus to re-tension a tensioning member with introduced tension, capable of minimizing a size of an anchoring hole to freely select an installation position, simplifying a re-tensioning work, and being economical due to a simple equipment configuration. According to the present invention, the apparatus comprises: an anchoring plate into which a tensioning member is inserted and penetrated, wherein a fixation hole having a female thread is formed on an inner circumferential surface; an anchoring device installed on the outer surface of the anchoring plate, and having a through-hole, into which the tensioning member is penetrated and inserted, formed in the center, a wedge accommodated in a wedge hole formed on one end such that one end of the tensioning member is anchored by the wedge, and two or more flat surfaces formed on an outer circumferential surface; and a re-tensioning adaptor installed between the anchoring plate and the anchoring device, having a through-hole formed on the center such that the tensioning member penetrates therethrough, and separating the anchoring device from the anchoring plate by rotation. The re-tensioning adaptor comprises: a main body part formed in a tubular shape having a thread formed on an outer circumferential surface to be screw-coupled to the fixation hole of the anchoring plate; and an anchoring device support part coupled to an outer end of the main body part to protrude outwardly more than the main body part, having a groove part formed on an outer circumferential surface to accommodate the one end of the anchoring device, and having a polygonal outer circumferential surface.

Description

[0001] Re-tensioning anchorage device [0002]

The present invention relates to a fixing apparatus for re-tensioning a tension member introduced with a tension, which can minimize the size of the fixing member and freely select an installation position, simplify re-tensioning operation, will be.

In prestressed structures and anchors for reinforcing the ground, tensions are used. Such tensions cause tension loss due to relaxation due to the passage of time after introducing the tensions through the initial tension. Therefore, if tension is lost due to relaxation of tension or additional tension is needed, it is necessary to re-tension the tension during use.

However, since such a re-tensioning operation is usually performed by a high-level elevating operation, it is difficult to re-tension when working with a heavy-weight hydraulic jack, and there is a problem in safety of workers. In addition, since the tension member protruding outward from the fixing member after the completion of the tension member initial tension operation is cut short, there is a problem that it is difficult to fix the tension member by engaging the tension member in the hydraulic jack.

Also, since the volume of the hydraulic jack is large, a considerable space is required for arranging the hydraulic jack at the rear end of the fixing hole, so there is a restriction on the arrangement of the tension member and the fixing hole. Specifically, when a tension member is installed on a steel beam joined to a steel column of an H-shaped steel column, the tension member is fixed through the flange of the steel column. Since the size of the hydraulic jack is larger than the interval between the flanges, the tension member can not be fixed between the flanges. There is a problem that the tension member must be fixed on the opposite side of the steel column. In this case, not only the length of the tension member is long, but also the fixture is exposed to the outside of the steel column to make the finishing process difficult, and when the tension members are installed on both sides of the steel column, they are interfered with each other.

As a result, a screw is formed on the outer circumferential surface of the auxiliary body unit, which is a fixing unit, to which the wedge-shaped fixing member is fixed, and screwed into the nut-shaped main body unit to rotate the auxiliary body unit, Technology has been proposed. However, such a conventional technique requires a thread to be formed on the entire outer circumferential surface of the auxiliary body unit, machining is difficult because the rotary operation unit must be coupled to the upper portion of the auxiliary body unit, and the main body unit is coupled to the outside of the auxiliary body unit. have.

In addition, when the auxiliary body unit as the fixing unit is rotated, the wedge-shaped fixing member coupled to the fixing unit is rotated to twist the tent, so that the tent is severed or loosened.

Also, in the related art, when the size of the auxiliary body unit is changed, the main body unit must be changed, which makes the operation cumbersome and uneconomical.

In order to solve the problems of the prior art as described above, the present invention can re-tension the tension member by rotation of the re-tension adapter without a separate tension device, thereby facilitating the re-tensioning operation, minimizing the size of the fixing device, And to provide a fixing device for re-tensioning.

According to a preferred embodiment of the present invention, there is provided an image forming apparatus, comprising: a fixing plate having a fixing hole having an inner peripheral surface through which a tension member is inserted; A through hole through which a tensile material is inserted into the fixing plate is formed at the center, a wedge is received in a wedge hole formed at one end, one end of the tensile material is fixed by the wedge, Two or more fixing holes formed; A main body part formed between the fixing plate and the fixing member and having a through hole at the center thereof so as to penetrate therethrough, a main body part formed in a tubular shape having threads on an outer peripheral surface thereof and screwed to the fixing hole of the fixing plate, The fixing unit may include a fixing part formed to protrude outwardly from the main body, a groove formed in the outer surface of the fixation part to receive one end of the fixing part, and a polygonal outer circumferential surface, ; The fixing device for re-tensioning according to claim 1,

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According to another preferred embodiment of the present invention, the groove of the fixing member support portion is formed so that the inner circumferential surface thereof corresponds to the outer circumferential surface of the fixing member, and the outer circumferential surface thereof has a shape and size corresponding to the inner circumferential surface of the groove portion, And a fixing device for re-tensioning the fixing device.

According to another preferred embodiment of the present invention, a fixing nut is screwed to the outer circumferential surface of the body portion between the fixing plate and the fixing member supporting portion.

According to another preferred embodiment of the present invention, a screw is formed on the outer circumferential surface of the fixing unit.

The present invention has the following effects.

First, a re-tension adapter is provided to allow re-tensioning without the need for additional strain equipment such as a hydraulic jack.

Second, the retensioning fixing device of the present invention can be freely selected because of its small size.

Third, there is almost no need to process the anchorage holes, the construction is simple, and the amount of steel is small.

Fourth, since the fixture support portion of the re-tension adapter is not in close contact with the fixation plate, the re-tension adapter is easy to rotate because of low frictional resistance.

Fifth, since the re-tension adapter is pre-screwed to the fusing plate, it is easy to install the tension device for re-tensioning.

Sixth, if the guide ring is provided, re-tension adapter of the same size can be used irrespective of the fixing port size, so that the operation is simple and economical.

1 is a perspective view showing a conventional anchor device for re-tensioning.
2 is a perspective view showing a state in which a fixing device for re-tensioning according to the present invention is installed.
3 is a cross-sectional perspective view showing the re-tension adapter of the present invention.
4 is a cross-sectional view of the fixing apparatus for re-tensioning according to the present invention.
FIG. 5 is a perspective view showing the engagement relationship of the fixing device for re-tensioning according to the present invention. FIG.
6 is a perspective view showing a coupling relationship of the guide rings;
7 is a cross-sectional view showing a fixing apparatus for re-tensioning according to the present invention in which a guide ring is combined.
8 is a cross-sectional view showing a fixing device for re-tensioning according to the present invention, to which a fixing nut is coupled.
9 is a perspective view showing various embodiments in which the retensioning fixing device of the present invention is applied.
10 is a perspective view of a fixing apparatus for re-tensioning according to the present invention in which a thread is formed on the outer circumferential surface of the fixing member.
11 is a cross-sectional view of the fixing apparatus for re-tensioning according to the present invention shown in Fig.

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

3 is a cross-sectional perspective view showing the re-tension adapter of the present invention, FIG. 4 is a sectional view of the fixing device for re-tensioning according to the present invention, and FIG. 5 is a perspective view showing the engagement relationship of the retensioning fixing device of the present invention.

As shown in FIGS. 2 to 5, the fixing apparatus for re-tensioning according to the present invention includes a fixing plate 3 having a fixing hole 31 having an inner peripheral surface through which a tension member 1 is inserted; A through hole 41 is formed in the center of the fixing plate 3 and through which the tension member 1 is inserted. The wedge 5 is received in the wedge hole 42 formed at one end, (4) having one end of the fixing member (1) fixed by the wedge (5) and having at least two flat surfaces (43) formed on the outer circumferential surface thereof; And a through hole 61 formed at the center of the fixation plate 3 and the fixture 4 so as to penetrate the tensile material 1. The fixation plate 3 is formed into a tubular shape having threads on its outer surface, The fixing part 4 is formed on the outer side of the fixing part 4 so as to protrude outwardly from the main body part 62. The fixing part 4 is fixed to the fixing hole 31 of the fixing part 4, A re-tension adapter 6 formed of a fixing port support portion 63 having a polygonal outer circumference and formed with a groove portion 631 for accommodating the fixation port 4 and separating the fixing port 4 from the fixing plate 3 by rotation; . ≪ / RTI >

The fixing port 4 is provided with a fixing hole 4 for a common tension member in which a through hole 41 through which the tension member 1 is inserted is formed at the center and a wedge hole 42 in which a wedge 5 is received is formed at one end, Can be used.

The re-tension adapter 6 is provided between the fixing plate 3 and the fixing port 4 so that when the re-tension adapter 6 is rotated in one direction, the re-tension adapter 6 moves in a direction away from the fixing plate 3 The tension member 1 is re-tensioned by pushing the fixing port 4 and separating it from the fixing plate 3.

Reference numeral 11 denotes a covering material covering the outside of the tensile member 1.

3 to 5, a female screw thread is formed on the inner circumferential surface of the fixing hole 31 of the fixing plate 3, and the re-tension adapter 6 has a tubular shape having threads on the outer circumferential surface thereof, And a fixture support portion 63 coupled to an outer end of the main body portion 62 to support the fixation port 4.

The main body 62 is provided at the rear end of the re-tension adapter 6 and is screwed to the fixing hole 31 of the fixing plate 3. As a result, when the re-tension adapter 6 is rotated, the main portion 62 is moved forward or backward in the fixing hole 31 of the fixing plate 3 to move the re-tension adapter 6, The re-tensioning adapter 6 moves the fixing port 4 outwardly so that the tension member 1 fixed thereto is re-tensioned.

The fixture support portion 63 is provided at the front end of the re-tension adapter 6 and supports not only one end of the fixation port 4 but also a tool for rotating the re-tension adapter 6 on the outer circumference of the fixture support portion 63 .

The fixture support portion 63 may be formed to have a larger diameter than the fixture hole 4 and the main body portion 62 so as to stably support one end of the fixation port 4 and facilitate grasping of the tool.

Since the fixture support portion 63 is separated from the fixation plate 3 without being in close contact therewith, there is no friction with the fixation plate 3 when the fixture plate 3 rotates.

A through hole 61 through which the tension member 1 is inserted is formed at the center of the main body portion 62 and the fixing port support portion 63. 5, the tension member 1 is inserted into the through hole 41 of the fixation port 4 through the retension adapter 6 through the through hole 61 of the re-tension adapter 6, And is fixed by the wedge 5.

Of course, if the fixing port is located at the fixed end, the fixing port 4 may be directly fixed to the fixing plate 3 without an adapter.

It is preferable that a washer 7 is provided between one end of the fixing port 4 and the fixing port support portion 63 to disperse the pressure of the contact surface and effectively support the fixing port 4.

The retension adapter 6 is screwed and fixed to the fixing hole 31 of the fixing plate 3 in advance before the fixture 4 and the tension member 1 are installed. This makes it easy to install the re-tensioning adapter 6 and the fixing port 4 is simply mounted on the fixing port supporting portion 63 of the re-tensioning adapter 6 so that there is no interference of the re-tensioning adapter 6, ) And the tension member 1 can be easily installed. In addition, since only the screw connection with the fixing plate 3 can be released, the re-tension adapter 6 can be easily removed and replaced.

As shown in FIG. 3, a groove 631 may be formed on the outer surface of the fixture support 63 of the re-tension adapter 6 to receive one end of the fixture 4.

The groove 631 is formed in a shape corresponding to the shape of the end of the fixing member 4 and is formed to have a diameter slightly larger than that of the fixing member 4 to facilitate insertion of the fixing member 4 or rotation of the re- .

The position of the fixing port 4 is stably maintained because the one end of the fixing port 4 is accommodated in the groove portion 631 and the axis of the fixing port 4 and the re-tension adapter 6 are aligned, Can be easily rotated.

It is preferable that the fixing port support portion 63 of the re-tension adapter 6 has a polygonal outer circumferential surface. Thus, the fixture holder 63 can be held by a tool (not shown) such as an electric torque wrench, and the re-tension adapter 6 can be rotated easily.

Further, the fixation port 4, which is in close contact with the rotation of the re-tension adapter 6, may rotate like the re-tension adapter 6 due to friction on the contact surface. Therefore, the re-tension adapter 6 must be rotated while the fixture 4 is gripped by another tool (not shown) such as a wrench. To this end, the flat surface 43 ) Are preferably formed at least two times.

Since the fixing port 4 is fixed without rotating, it is sufficient to form the flat surface 43 only on both sides of the fixing port 4 as shown in FIG. 5 and the like.

FIG. 6 is a perspective view showing the engagement relationship of the guide rings, and FIG. 7 is a cross-sectional view showing the fixing device for re-tensioning according to the present invention to which the guide rings are coupled.

6 and 7, the inner circumferential surface of the groove portion 631 of the fixing port support portion 63 corresponds to the outer circumferential surface of the fixing port 4, and the outer circumferential surface thereof has a shape and size corresponding to the inner circumferential surface of the groove portion 631 And a guide ring 64 having one end of the fixing port 4 inserted therein may be provided.

Depending on the cross-sectional area of the tension member 1 and the magnitude of the tension applied thereto, the fixing holes 4 having various sizes and diameters can be used. In this case, the re-tensioning adapter 6 needs to be replaced in accordance with the standard of the fixing hole 4 . Therefore, the diameter of the groove 631 of the fixture holder 63 is relatively larger than that of the fixture 4 so that the same re-tension adapter 6 can be used irrespective of the fixture 4 standard, and the groove 631 and the fixture 4, the fixing port 4 can be positioned at the center of the re-tension adapter 6 by inserting the guide ring 64 into the gap.

The guide ring 64 may have various widths according to the standard of the fixing port 4 and may be selectively used. Alternatively, the guide ring 64 may be formed of a magnetic material so as not to be detached from the groove 631 and attached to the fixing port supporting portion 63.

8 is a cross-sectional view showing a fixing apparatus for re-tensioning according to the present invention, to which a fixing nut is coupled.

8, a fixing nut 65 may be screwed to the outer circumferential surface of the body portion 62 between the fixing plate 3 and the fixing port support portion 63. [

The tension of the tensioning element 1 continues to act on the fixture 4 and the tensioning adapter 6 during use and when the tensioning adapter 6 is rotated to re-tension the tensioning element 1, Since the fixing port support portion 63 of the tension member 6 is spaced apart from the fixing plate 3, the re-tension adapter 6 may be rotated in the reverse direction due to the tension of the tension member 1 and return to the fixing plate 3 side, .

Therefore, a fixing nut 65 may be coupled between the fixing plate 3 and the fixture holder 63 to prevent this.

The tensioner adapter 6 is rotated to move the tension member 1 by a predetermined distance in the direction of tension so that the fixing nut 65 is rotated to move toward the fusing plate 3 to be closely contacted with and supported by the fusing plate 3 So that the re-tension adapter 6 does not move toward the fixing plate 3 and the tension of the tension member 1 can be maintained.

9 is a perspective view showing various embodiments to which the retensioning fixing device of the present invention is applied.

The retensioning fixing device of the present invention can be applied to the case where the tension member 1 for reinforcing the beam 2b is fixed to the column 2a as the H-shaped steel, as shown in Fig. 9 (a). In this case, since the tension member 1 can be re-tensioned without a separate tension device such as a hydraulic jack, the fixing hole can be installed in a narrow space. Thus, the inner flange of the column 2a is used as the fixing plate 3, It is possible to settle.

9 (b), when the tension member 1 is fixed to the side surface of the beam 2b, the volume of the re-tension fixing device is small, 2b can be minimized and the tension member 1 can be brought into close contact with the side surface of the beam 2b as much as possible.

In addition, although not shown in the drawing, the tension member may be used as an underground anchor, and the fusing plate may be a base plate installed on the ground.

FIG. 10 is a perspective view of the retensioning apparatus of the present invention in which a thread is formed on the outer circumferential surface of the fixing member, and FIG. 11 is a sectional view of the fixing apparatus for retensioning of the present invention shown in FIG.

10 and 11, a screw thread 44 may be formed on the outer circumferential surface of the fixation port 4. As shown in FIG.

The protection cap 8 may be fastened to the outside of the fixing port 4 in order to protect the fixing port 4 and the like after the fixing of the tension member 1 and to prevent corrosion.

At this time, a thread 44 for fastening the protective cap 8 may be formed on the outer circumferential surface of the fixture 4 so that the protective cap 8 can be screwed outside the fixture 4. The inner surface of the protective cap 8 is formed with a female screw thread corresponding to the thread 44 of the fixation port 4 so that the protective cap 8 and the fixation port 4 are screwed together.

A grease 9 may be filled in the protective cap 8 to more reliably prevent corrosion of the fixation port 4. [

It is preferable that the protective cap 8 is formed so as to enlarge the diameter of the opened end side so as to cover and protect the fixing port supporting portion 63 of the re-tension adapter 6.

1: Tension material 11: Cover material
2a: column 2b: beam
3: Fusing plate 31: Fixed hole
4: Fixing hole 41: Through hole
42: Wedge hole 43: Flat surface
44: thread 5: wedge
6: Re-tension adapter 61: Through hole
62: main body part 63:
64: Guide ring 65: Fixing nut
7: Washer 8: Protective cap
9: Greece

Claims (8)

A fusing plate (3) having a fixing hole (31) in which a tension member (1) is inserted and formed with an internal thread on its inner surface;
A through hole 41 is formed in the center of the fixing plate 3 and through which the tension member 1 is inserted. The wedge 5 is received in the wedge hole 42 formed at one end, (4) having one end of the fixing member (1) fixed by the wedge (5) and having at least two flat surfaces (43) formed on the outer circumferential surface thereof; And
A through hole 61 is formed at the center of the fixation plate 3 and the fixation port 4 so that the tension member 1 penetrates through the fixation plate 3. The fixation plate 3 is formed in a tubular shape, And a fixing part 62 which is screwed to the fixing hole 31 of the main body part 62 and is formed to protrude outward from the main body part 62 by being coupled to the outer end of the main body part 62, A re-tension adapter 6 formed of a fixing port support portion 63 having a polygonal outer circumference and formed with a groove portion 631 to be accommodated and spaced from the fixing plate 3 by rotation of the fixing port 4; And a fixing device for fixing the toner image.
delete delete delete delete The method of claim 1,
The inner circumferential surface of the groove portion 631 of the fixing port support portion 63 corresponds to the outer circumferential surface of the fixing port 4 and the outer circumferential surface thereof has a shape and size corresponding to the inner circumferential surface of the groove portion 631, Wherein the guide ring (64) is inserted into the guide ring (64).
The method of claim 1,
Wherein a fixing nut (65) is screwed to an outer circumferential surface of the main body (62) between the fixing plate (3) and the fixing port supporting portion (63).
The method of claim 1,
Wherein a screw thread (44) is formed on an outer circumferential surface of the fixation port (4).

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