JP2016176638A - Pipeline reinforcement device and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability of wire winding work to a pipeline, in a pipeline reinforcement device and method.SOLUTION: A pipeline reinforcement device includes: a wire winding jig 11 arranged at the outer peripheral part of a pipeline T into a ring shape, and winding a wire W around the outer periphery of the pipeline T in a spiral manner; a second drive device 32, as a wire winding device, winding the wire W around the wire winding jig 11; and a first drive device 31, as a wire taking-up device, winding the wire W around the outer peripheral surface of the pipeline T by taking up part of the wire W wound around the outer periphery of the pipeline T in the spiral manner by the wire winding jig 11.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a piping reinforcement device and method applied to a boiler installed in a power plant or the like.

  Conventionally, large-diameter pipes applied to boilers such as thermal power plants are likely to be damaged at the welds. This damage proceeds with radial expansion during use in a high temperature environment. For example, there exists a thing described in the following patent document 1 as what prevents the damage by the bulging deformation | transformation of a boiler tube, for example. The method for reinforcing a boiler tube described in Patent Document 1 is to wind a metal wire around the outer peripheral surface of the boiler tube. In this boiler tube reinforcement method, a metal wire is wound around the outer peripheral surface of the bulge portion of the boiler tube along the circumferential direction of the boiler tube so as to fix the bulge portion. It is possible to prevent the boiler tube from being damaged due to bulging.

JP2013-096681A

  In the above-described conventional boiler tube reinforcement method, an operator manually winds a metal wire around the outer peripheral surface of the boiler tube. When applied to a welded portion of a large-diameter pipe, the burden on the worker increases and the work time also takes a long time, so improvement in workability is desired.

  This invention solves the subject mentioned above, and it aims at providing the reinforcement apparatus and method of piping which aim at the improvement of workability | operativity of wire winding work around piping.

  In order to achieve the above object, the pipe reinforcing device of the present invention comprises a wire winding jig which is arranged in the outer periphery of a pipe in a ring shape and causes the wire to follow the outer periphery of the pipe in a spiral shape. A wire winding device that winds the wire around the wire winding jig; and the wire winding jig winds up a part of the wire that is spirally copied around the outer periphery of the pipe. And a wire winding device for winding the wire around the outer peripheral surface of the pipe.

  Therefore, the wire winding jig is arranged on the outer periphery of the pipe. First, when the wire is wound around the wire winding jig by the wire winding device, the wire spirals around the outside of the pipe by the wire winding jig. Next, when a part of the wire is wound up by the wire winding device, the wire is wound around the outer peripheral surface of the pipe. As a result, the wire can be automatically wound around the outer peripheral surface of the pipe, and the workability of the wire winding work around the pipe can be improved.

  In the pipe reinforcing device of the present invention, the wire winding jig is configured by connecting a plurality of dividing jigs in a ring shape.

  Therefore, the wire winding jig can be easily attached to the existing piping by configuring the wire winding jig by connecting a plurality of split jigs in a ring shape.

  In the pipe reinforcing device according to the present invention, the wire winding jig can be fixed with a predetermined gap with respect to the outer peripheral surface of the pipe, and the tip end portion of the wire is guided to the inner peripheral surface. Is characterized in that a guide portion is provided on the outer periphery of the pipe in a spiral shape.

  Therefore, when the tip of the wire is inserted into the inner peripheral surface of the wire winding jig fixed to the outer peripheral surface of the pipe, the wire is spirally copied to the outer periphery of the pipe by the guide portion, The wire can be easily arranged around the outside of the pipe.

  In the pipe reinforcement device of the present invention, the guide portion is a spiral groove portion.

  Therefore, by guiding the tip of the wire to the spiral groove, the wire can be easily spiraled around the outer periphery of the pipe.

  In the pipe reinforcing apparatus of the present invention, the wire winding jig is provided with a guide hole for introducing the wire from the outside into the guide portion.

  Therefore, by providing a guide hole in the wire winding jig, the wire can be easily introduced from the outside through the guide hole into the guide portion.

  In the pipe reinforcement device according to the present invention, the wire winding device and the wire winding device are drive devices capable of rotating a wire reel around which a wire having a predetermined length is wound forward and backward.

  Therefore, by using the drive device also as the wire winding device and the wire winding device, the device can be simplified and the cost can be reduced.

  In the pipe reinforcing device according to the present invention, the pipe driving device is provided between the first driving device capable of rotating the wire reel around which the wire having a predetermined length is wound forward and backward, and the wire winding jig and the wire reel. And a second driving device capable of rotating the relay reel forward and backward. The wire winding device is the second driving device, and the wire winding device is the first driving device. It is said.

  Accordingly, by setting the wire winding device as the second driving device and the wire winding device as the first driving device, it is possible to efficiently feed the wire and wind the wire.

  In the pipe reinforcing apparatus of the present invention, the wire winding jig can be rotatably mounted on the outer peripheral portion of the pipe, and the guide for causing the outer surface to follow the wire spirally around the outer periphery of the pipe. It is characterized in that a part is provided.

  Therefore, by rotating the wire winding jig, the guide portion can easily wind the wire spirally around the outer circumferential surface of the wire winding jig.

  In the pipe reinforcing device of the present invention, the wire winding device is a rotating device that rotates the wire winding jig with respect to the pipe.

  Therefore, the wire can be easily wound around the outer peripheral surface of the wire winding jig by rotating the wire winding jig with respect to the pipe by the rotating device.

  In the pipe reinforcing device according to the present invention, the wire winding device is a drive device capable of rotating the wire reel around which the wire having a predetermined length is wound forward and backward.

  Therefore, by using a driving device as the wire winding device, the device can be simplified and the cost can be reduced.

  In the reinforcement apparatus for piping according to the present invention, a moving device for moving the wire winding device in the longitudinal direction of the piping is provided.

  Therefore, by moving the wire winding device in the longitudinal direction of the pipe by the moving device, the wire winding position on the outer peripheral surface of the wire winding jig can be shifted, and the wire can be easily wound in a spiral shape. .

  Further, in the wire reinforcing method for a pipe of the present invention, a step of fixing a wire winding jig having a ring shape on the outer peripheral part of the pipe, and an inner peripheral surface of the wire winding jig from the outside A step of spiraling the wire around the outer periphery of the pipe by the guide portion by feeding the wire toward a guide portion provided on the wire, and fixing the tip of the wire to the outer peripheral surface of the pipe. A step of winding a part of the wire to wind the wire around the outer peripheral surface of the pipe; and a step of cutting and fixing the wire wound around the outer peripheral surface of the pipe. .

  Therefore, the wire can be made to follow the outer periphery of the pipe simply by feeding the wire toward the guide portion of the wire winding jig, and the wire can be wound around the outer peripheral surface of the pipe simply by winding the wire. It is possible to improve the workability of the wire winding work around the pipe.

  In the wire reinforcing method for a pipe according to the present invention, a step of rotatably mounting a wire winding jig having a ring shape on the outer peripheral part of the pipe, and fixing the tip of the wire to the outer peripheral surface of the pipe. Winding the wire around the outer periphery of the wire winding jig by rotating the wire winding jig relative to the pipe, and winding the wire from between the pipe and the wire A step of pulling out a jig, a step of winding a part of the wire to wind the wire around the outer peripheral surface of the pipe, and a step of cutting and fixing the wire wound around the outer peripheral surface of the pipe It is characterized by this.

  Therefore, the wire can be made to follow the outer periphery of the pipe simply by rotating the wire winding jig with respect to the pipe, and the wire can be wound around the outer peripheral surface of the pipe simply by winding the wire. The workability of the wire winding work around the pipe can be improved.

  According to the apparatus and method for reinforcing a pipe of the present invention, a wire can be automatically wound around the outer peripheral surface of the pipe, and the workability of the wire winding work around the pipe can be improved.

FIG. 1 is a front view illustrating a piping reinforcement device according to the first embodiment. FIG. 2 is a horizontal longitudinal sectional view showing a pipe reinforcement device. FIG. 3 is a cross-sectional view showing a guide portion in the wire winding jig. FIG. 4 is a schematic diagram illustrating a method for reinforcing a pipe. FIG. 5 is a schematic diagram showing a method for reinforcing a pipe. FIG. 6 is a perspective view showing a reinforcing state of the piping. FIG. 7 is a front view illustrating the piping reinforcement device of the second embodiment. FIG. 8 is a horizontal longitudinal sectional view showing a piping reinforcement device. FIG. 9 is a schematic diagram illustrating a method for reinforcing a pipe. FIG. 10 is a schematic diagram illustrating a method for reinforcing a pipe. FIG. 11 is a perspective view showing a reinforcement state of the piping.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment, and when there are two or more embodiments, what comprises combining each embodiment is also included.

[First Embodiment]
FIG. 1 is a front view showing a pipe reinforcement device according to the first embodiment, FIG. 2 is a horizontal longitudinal sectional view showing a pipe reinforcement device, and FIG. 3 is a cross-sectional view showing a guide portion in a wire winding jig. is there.

  The apparatus and method for reinforcing a pipe according to the present embodiment are intended for boiler pipes provided in a thermal power plant, particularly large-diameter boiler pipes. This boiler pipe is likely to be damaged at the weld, and this damage proceeds while causing radial expansion during use in a high-temperature environment. In order to prevent breakage due to the bulging deformation of the boiler piping, a metal wire is wound around the outer peripheral surface of the boiler piping for reinforcement.

  In the first embodiment, as shown in FIGS. 1 and 2, the piping reinforcement device 10 includes a wire winding jig 11, and a wire winding device and a drive device 12 as a wire winding device. .

  The wire winding jig 11 has a ring shape and is arranged on the outer periphery of the pipe T so that the wire W follows the outer periphery of the pipe T in a spiral shape. The wire winding jig 11 is configured by connecting a plurality of (two in this embodiment) split jigs 21 and 22 in a ring shape. That is, the split jigs 21 and 22 have substantially the same half crack shape, and are integrally formed at one end portion in the axial direction of the jig main bodies 21a and 22a having a semicircular cross-sectional shape and the jig main bodies 21a and 22a. And fixed portions 21b and 22b having a semicircular cross-sectional shape, and flange portions 21c and 22c integrally formed at respective end portions in the circumferential direction of the jig main bodies 21a and 22a and the fixed portions 21b and 22b. .

  The jig bodies 21a and 22a and the fixing portions 21b and 22b are combined so that their inner peripheral surfaces face each other, and the flange portions 21c and 22c that are in close contact with each other are connected by fastening with the connecting bolts 23. .

  The jig main bodies 21a and 22a are set to have an inner diameter larger than the outer diameter of the pipe T, and a predetermined amount of gap S is secured between the inner peripheral surface of the jig main bodies 21a and 22a and the outer peripheral surface of the pipe T. . The radial length of the gap S is set to be larger than the outer diameter of the wire W. In addition, the fixed portions 21b and 22b have an inner diameter set to be approximately the same as the outer diameter of the pipe T, and the inner peripheral surface of the fixed portions 21b and 22b and the outer peripheral surface of the pipe T are in close contact with each other. Therefore, the wire winding jig 11 is fixed to the outer peripheral portion of the pipe T by fastening the flange portions 21c and 22c with the connecting bolt 23 in a state where the fixing portions 21b and 22b are in close contact with the pipe T.

  The wire winding jig 11 (dividing jigs 21 and 22) guides the tip end portion of the wire W to the inner peripheral surfaces of the jig main bodies 21a and 22a, and copies the wire W spirally around the outer periphery of the pipe T. A guide portion 24 is provided. The guide portion 24 is an inner peripheral surface of the jig main bodies 21a and 22a and has a function of making the wire W follow the outer periphery of the pipe T in a spiral shape. The guide portion 24 is, for example, a spiral groove portion 25 as shown in FIG. As shown in FIGS. 1 to 3, the wire winding jig 11 (dividing jig 21) is provided with a guide hole 26 for introducing the wire W into the guide portion 24 from the outside in the jig main body 21 a. . The guide hole 26 is formed along a tangential direction at a position approaching the fixed portions 21b and 22b side of the jig main bodies 21a and 22a. Therefore, when the guide portion 24 is the spiral groove portion 25, the spiral groove portion 25 is formed so as to draw a spiral in a direction away from the fixing portions 21b and 22b from a position facing the guide hole 26.

  The driving device 12 feeds the end of the wound wire W toward the wire winding jig 11 and winds up a part of the wire W that is spirally copied around the outer periphery of the pipe T. W is wound around the outer peripheral surface of the pipe T.

  The drive device 12 includes a first drive device 31 and a second drive device 32. The first drive device 31 is configured such that a wire reel 35 is detachably supported on a drive shaft 34 of a drive motor 33. A wire W having a predetermined length is wound around the wire reel 35 and can be driven to rotate forward and backward by a drive motor 33. The second drive device 32 is configured such that a relay reel 38 is supported on a drive shaft 37 of a drive motor 36. The relay reel 38 is provided between the wire winding jig 11 and the wire reel 35, and can be driven forward and reverse by a drive motor 36.

  In this case, when the pipe T is arranged along the vertical direction, the wire winding jig 11, the first driving device 31, and the second driving device 32 are arranged such that the axis is along the vertical direction. The pipe T, the wire winding jig 11, the first driving device 31, and the second driving device 32 are arranged on a substantially straight line in a front view (FIG. 1), but in a straight line in a plan view (FIG. 2). It is desirable that the relay reel 38 is shifted to one side (winding side). As a result, the winding amount of the wire W on the relay reel 38 is increased, and the wire W can be fed out efficiently by the rotational drive of the relay reel 38.

  In this embodiment, the second drive device 32 functions as a wire winding device, and the first drive device 31 functions as a wire winding device. Therefore, the wire reel 35 can idle with respect to the drive motor 33, and the relay reel 38 can idle with respect to the drive motor 36. In this case, the one-way clutch is interposed between the drive shaft 34 of the drive motor 33 and the wire reel 35 and between the drive shaft 37 of the drive motor 36 and the relay reel 38 without causing the drive motors 33 and 36 to idle. You may let them.

  Here, the reinforcement method of piping of 1st Embodiment is demonstrated. 4 and 5 are schematic views showing a method for reinforcing a pipe, and FIG. 6 is a perspective view showing a reinforcing state of the pipe.

  The method for reinforcing a pipe according to the first embodiment includes a step of fixing a wire winding jig 11 having a ring shape on the outer peripheral portion of the pipe T, and a wire W provided from the outside on the inner peripheral surface of the wire winding jig 11. The wire W is drawn out toward the guide portion 24 to cause the wire W to spirally follow the outer periphery of the pipe T by the guide portion 24, and the tip end portion of the wire W is fixed to the outer peripheral surface of the pipe T. A step of winding the wire W around the outer peripheral surface of the pipe T, and a step of cutting the wire W wound around the outer peripheral surface of the pipe T.

  Hereinafter, the method for reinforcing a pipe according to the first embodiment will be described in detail.

  As shown in FIGS. 1 and 2, first, the wire winding jig 11 is fixed to a reinforcing portion in the pipe T. That is, the split jigs 21 and 22 are arranged outside so as to cover the reinforcing portion in the pipe T, and the inner peripheral surfaces of the fixing portions 21b and 22b and the outer peripheral surface of the pipe T are brought into close contact with each other. The split jigs 21 and 22 are fixed to the outer peripheral portion of the pipe T by fastening the portions 21 c and 22 c with the connecting bolt 23. On the other hand, the wire reel 35 is attached to the drive shaft 34 of the drive motor 33 in the first drive device 31, and the relay reel 38 is attached to the drive shaft 37 of the drive motor 36 in the second drive device 32. By winding the wire W from the wire reel 35 around the relay reel 38 once, the wire W is wound. Then, after the wire W fed out from the wire reel 35 is wound around the relay reel 38 a plurality of times, the wire tip portion Wa is directed to the wire winding jig 11 side.

  Next, the wire tip portion Wa fed from the relay reel 38 is passed through the guide hole 26 of the dividing jig 21 in the wire winding jig 11, and the inner peripheral surface of the wire winding jig 11 and the outer peripheral surface of the pipe T The gap S is inserted. Then, by driving the relay reel 38 in the normal direction by the second driving device 32, the wire W is sent to the wire winding jig 11 side, and the inner peripheral surface of the wire winding jig 11 and the outer peripheral surface of the pipe T are It feeds into the gap S between them at a predetermined speed. Then, as shown in FIG. 4, the wire W follows the outer peripheral surface of the pipe T while the wire tip portion Wa slides on the guide portion 24 in the gap S. At this time, if the guide portion 24 is the spiral groove portion 25, the wire tip portion Wa moves while being guided by the spiral groove portion 25, and the wire W is copied in a spiral shape around the outer periphery of the pipe T.

  As shown in FIG. 5, when a predetermined amount is copied around the outer periphery of the pipe T so that the wire W can cover the reinforcing portion of the pipe T, the second driving device 32 is stopped and the wire T is wound from the pipe T. Remove the attachment jig 11. Then, as shown in FIG. 6, the wires W are closely spaced and arranged, and the wire W is disposed at a position covering the reinforcing portion of the pipe T, and then the wire tip portion Wa is welded to the outer peripheral surface of the pipe T. Temporarily fix with. In this state, the wire reel 35 is reversely driven by the first driving device 31 to wind up a part of the wire W. Then, the wire W is wound around the outer peripheral surface of the pipe T without a gap with the wire tip portion Wa temporarily fixed to the pipe T as a fulcrum, and the first driving device 31 is stopped here.

  Thereafter, the wire rear end Wb is temporarily fixed to the outer peripheral surface of the pipe T by welding, and the wire W is cut. Then, the reinforcing part of the pipe T is covered with the wire W, and the pipe T is reinforced.

  As described above, in the pipe reinforcement device according to the first embodiment, the wire winding treatment is arranged on the outer peripheral portion of the pipe T in a ring shape so that the wire W follows the outer periphery of the pipe T in a spiral shape. The tool 11, the second drive device 32 as a wire winding device for winding the wire W around the wire winding jig 11, and the wire W that is spirally copied around the outer periphery of the pipe T by the wire winding jig 11. A first driving device 31 is provided as a wire winding device that winds a part of the wire W around the outer peripheral surface of the pipe T.

  Accordingly, the wire winding jig 11 is arranged on the outer periphery of the pipe T, and first, when the wire leading end portion Wa is fed out toward the wire winding jig 11 by the second driving device 32, the wire W is turned into the wire winding jig. After the wire 11 is spirally copied around the outer periphery of the pipe T by the tool 11, and then the wire distal end portion Wa is fixed to the outer peripheral surface of the pipe T, when a part of the wire W is wound up by the first driving device 31, The wire W is wound around the outer peripheral surface of the pipe T. As a result, the wire W can be automatically wound around the outer peripheral surface of the pipe T, and the workability of the wire winding work around the pipe T can be improved.

  In the pipe reinforcing device of the first embodiment, the wire winding jig 11 is configured by connecting a plurality of dividing jigs 21 and 22 in a ring shape. Therefore, the wire winding jig 11 can be easily attached to the pipe T by attaching the split jigs 21 and 22 to the existing pipe T and connecting them from the outside of the pipe T.

  In the pipe reinforcing device of the first embodiment, the split jigs 21 and 22 of the wire winding jig 11 can be fixed with a predetermined gap S with respect to the outer peripheral surface of the pipe T, and the wire is attached to the inner peripheral surface. A guide portion 24 that guides the tip portion Wa and spirals the wire W around the outer periphery of the pipe T is provided. Accordingly, when the wire tip portion Wa is inserted into the inner peripheral surface of the wire winding jig 11 fixed to the outer peripheral surface of the pipe T, the wire W is spirally copied around the outer periphery of the pipe T by the guide portion 24. Therefore, the wire W can be easily arranged around the outer periphery of the pipe T.

  In the piping reinforcement device of the first embodiment, the guide portion 24 is a spiral groove portion 25. Therefore, the wire tip portion Wa is guided by the spiral groove portion 25, so that the wire W can easily follow the outer periphery of the pipe T in a spiral shape.

  In the piping reinforcing device of the first embodiment, a guide hole 26 for introducing the wire W from the outside into the guide portion 24 is provided in the dividing jig 21 of the wire winding jig 11. Therefore, the wire W can be easily introduced into the guide portion 24 from the outside through the guide hole 26.

  In the pipe reinforcement device according to the first embodiment, the first drive device 31 capable of rotating the wire reel 35 around which the wire W having a predetermined length is wound in the forward and reverse directions, the wire winding jig 11, and the wire reel 35. A second driving device 32 capable of forward / reverse rotation driving of the relay reel 38 provided therebetween is provided, the wire winding device is the second driving device, and the wire winding device is the first driving device 31. Accordingly, the wire W can be fed out and the wire W can be wound up efficiently.

  In the method for reinforcing a pipe according to the first embodiment, the step of fixing the wire winding jig 11 having a ring shape around the outer periphery of the pipe T, and the wire W from the outside of the wire winding jig 11 are fixed. A step of spiraling the wire W around the outer periphery of the pipe T by the guide portion 24 by drawing out toward the guide portion 24 provided on the inner peripheral surface, and the outer end surface of the pipe T with the tip end of the wire W It includes a step of winding the wire W around the outer peripheral surface of the pipe T by fixing and winding a part of the wire W, and a step of cutting the wire W wound around the outer peripheral surface of the pipe T.

  Therefore, the wire W can be made to follow the outer periphery of the pipe T simply by feeding the wire W toward the guide portion 24 of the wire winding jig 11, and the wire W can be piped only by winding the wire W. The wire can be wound around the outer peripheral surface of T, and the workability of the wire winding work around the pipe T can be improved. Moreover, the pipe T can be efficiently reinforced by cutting and fixing the wire W wound around the outer peripheral surface of the pipe T.

[Second Embodiment]
FIG. 7 is a front view showing a pipe reinforcement device according to the second embodiment, and FIG. 8 is a horizontal longitudinal sectional view showing the pipe reinforcement device.

  In the second embodiment, as shown in FIGS. 7 and 8, the pipe reinforcing device 40 includes a wire winding jig 41, a rotating device 42 as a wire winding device, a moving device 43, and a wire winding device. And a drive device 44 as a device.

  The wire winding jig 41 has a ring shape and is arranged on the outer periphery of the pipe T so that the wire W follows the outer periphery of the pipe T in a spiral shape. The wire winding jig 41 is configured by connecting a plurality (two in the present embodiment) of split jigs 51 and 52 in a ring shape. That is, the split jigs 51 and 52 have substantially the same half-crack shape, and are jig body 51a and 52a having a semicircular cross-sectional shape, and one axial end portion of the jig bodies 51a and 52a in the circumferential direction. The flange portions 51b and 52b are formed integrally with each end portion. The jig bodies 51 a and 52 a are combined so that their inner peripheral surfaces face each other, and the flange portions 51 b and 52 b that are in close contact with each other are connected by being fastened by the connecting bolt 53.

  The jig main bodies 51 a and 52 a have an inner diameter larger than the outer diameter of the pipe T, and a predetermined amount of gap S is secured between the inner peripheral surface of the jig main bodies 51 a and 52 a and the outer peripheral surface of the pipe T. . The wire winding jig 41 (dividing jigs 51 and 52) can be rotatably mounted on the outer periphery of the pipe T. In other words, the split jigs 51 and 52 are each provided with a bearing 54 on the inner peripheral surface of each end in the axial direction. Each of the bearings 54 has an outer diameter set to be approximately the same as the inner diameter of the split jigs 51 and 52, and an inner diameter is set to be approximately the same as the outer diameter of the pipe T. Therefore, the flange portions 51b and 52b are fastened by the connecting bolt 53 in a state where the jig main bodies 51a and 252a are supported by the pipe T through the bearings 54, so that the wire winding jig 41 is connected to the outer periphery of the pipe T. The part is supported rotatably.

  The wire winding jig 41 (dividing jigs 51 and 52) guides the wire distal end portion Wa to the outer peripheral surfaces of the jig main bodies 51a and 52a and causes the wire W to follow the outer periphery of the pipe T in a spiral shape. A portion 54 is provided. The guide portion 54 is provided on an outer peripheral surface of the jig main bodies 51a and 52a and is provided in an area where the flange portions 51b and 52b are not provided, and has a function of making the wire W follow the outer periphery of the pipe T in a spiral shape. Yes. The guide portion 54 is a flat surface, but may be a spiral groove portion.

  The rotating device 42 winds the wire W around the wire winding jig 41, and rotates the wire winding jig 41 with respect to the pipe T. The rotating device 42 includes a fixed base 55 and a drive motor 56. The fixing base 55 is configured by connecting a plurality of (two in this embodiment) divided fixing bases 55 a and 55 b in a ring shape, and integrally formed flange portions 55 c and 55 d are fastened by connecting bolts 57. Thus, the pipes T are connected to each other and fixed to the outer periphery of the pipe T. The drive motor 56 is supported by the fixed base 55, and a drive gear 58 is fixed to the drive shaft 56a. On the other hand, the wire winding jig 41 (dividing jigs 51 and 52) has a driven gear 59 fixed to one end portion in the axial direction. The drive gear 58 of the drive motor 56 meshes with the driven gear 59 of the wire winding jig 41. Therefore, the wire winding jig 41 can be rotated by the drive motor 56 via the drive gear 58 and the driven gear 59.

  The moving device 43 moves the driving device 44 in the longitudinal direction of the pipe T. The moving device 43 includes a base 61, a drive motor 62, and a moving table 63. The drive motor 62 is mounted on the base 61 and can drive the screw shaft 64 disposed along the longitudinal direction of the pipe T to rotate forward and backward. The moving table 63 is supported so as to be movable along the longitudinal direction of the pipe T with respect to the base 61 by a guide device (not shown), and a nut 65 is fixed to the vertical wall portion. The screw shaft 64 of the drive motor 62 is screwed into the nut 65. Therefore, the movable table 63 can be moved by the drive motor 62 via the screw shaft 64 and the nut 65.

  The driving device 44 winds the wire W around the outer peripheral surface of the pipe T by winding a part of the wire W that is spirally traced around the outer periphery of the pipe T.

  The drive device 44 is configured such that a wire reel 68 is detachably supported on a drive shaft 67 of a drive motor 66. The wire reel 68 is wound with a wire W having a predetermined length and can be driven to rotate forward and backward by a drive motor 66. The driving device 44 is mounted on a moving table 63 of the moving device 43, and can be moved along the longitudinal direction of the pipe T by the driving motor 62.

  Here, the reinforcement method of piping of 2nd Embodiment is demonstrated. 9 and 10 are schematic views showing a method for reinforcing a pipe, and FIG. 11 is a perspective view showing a reinforcing state of the pipe.

  The method of reinforcing the pipe of the second embodiment includes a step of rotatably mounting a wire winding jig 41 having a ring shape on the outer peripheral portion of the pipe T, and fixing the tip end portion of the wire W to the outer peripheral surface of the pipe T. The wire winding jig 41 is rotated around the pipe T to spirally wind the wire W around the outer peripheral surface of the wire winding jig 41, and the wire winding jig from between the pipe T and the wire W is wound. A step of extracting the tool 41, a step of winding a part of the wire W to wind the wire W around the outer peripheral surface of the pipe T, and a step of cutting the wire W wound around the outer peripheral surface of the pipe T.

  Hereinafter, the method for reinforcing a pipe according to the second embodiment will be described in detail.

  As shown in FIGS. 7 and 8, first, the wire winding jig 41 is fixed to the reinforcement portion in the pipe T. That is, the split jigs 51 and 52 are arranged on the outer side so as to cover the reinforcing portion in the pipe T, and the flange parts 51b and 52b are fastened by the connecting bolt 53, so that the split jigs 51 and 52 are piped. Fix to the outer periphery of T. On the other hand, the wire reel 68 is mounted on the drive shaft 67 of the drive motor 66 by the drive device 44. Then, the wire W from the wire reel 68 is pulled out, and the wire tip portion Wa is temporarily fixed to the outer peripheral surface of the wire winding jig 41 by welding.

  Next, the wire winding jig 41 is rotated forward by the drive motor 56 of the rotating device 42, whereby the wire W is wound around the outer peripheral surface of the wire winding jig 41. At this time, as the wire winding jig 41 rotates, the drive motor 44 of the moving device 43 moves the driving device 44 in the winding direction via the moving table 63. Then, as shown in FIG. 9, the wire W is wound in order along the wire winding jig 41 on the outside of the pipe T while being guided by the guide portion 54.

  When the wire W is copied by a predetermined amount around the outer periphery of the pipe T so that the reinforcing portion of the pipe T can be covered, the rotating device 42 and the moving device 43 are stopped, and as shown in FIG. The wire winding jig 41 is removed so as to be pulled out in the axial direction. Then, the wire reel 68 is reversely driven by the drive motor 66 of the drive device 44 to wind up a part of the wire W. Then, as shown in FIG. 11, the wire W is wound around the outer peripheral surface of the pipe T without a gap with the wire tip portion Wa temporarily fixed to the pipe T as a fulcrum, and the driving device 44 is stopped here.

  Thereafter, the wire rear end Wb is temporarily fixed to the outer peripheral surface of the pipe T by welding, and the wire W is cut. Then, the reinforcing part of the pipe T is covered with the wire W, and the pipe T is reinforced.

  As described above, in the pipe reinforcement device according to the second embodiment, the wire winding treatment is arranged in a ring shape and arranged on the outer peripheral portion of the pipe T so as to follow the wire W spirally around the outer periphery of the pipe T. A tool 41, a rotating device 42 as a wire winding device for winding the wire W around the wire winding jig 41, and a wire W that is spirally copied around the outer periphery of the pipe T by the wire winding jig 41. A driving device 44 is provided as a wire winding device that winds the wire W around the outer peripheral surface of the pipe T by winding the portion.

  Accordingly, the wire winding jig 41 is disposed on the outer peripheral portion of the pipe T, and after the wire tip portion Wa is first fixed to the outer peripheral surface of the pipe T, the wire winding jig 41 is rotated by the rotating device 42. W is spirally copied around the outer periphery of the pipe T by the wire winding jig 41. Next, after removing the wire winding jig 41, a part of the wire W is wound by the driving device 44. The wire W is wound around the outer peripheral surface of the pipe T. As a result, the wire W can be automatically wound around the outer peripheral surface of the pipe T, and the workability of the wire winding work around the pipe T can be improved.

  In the pipe reinforcement device of the second embodiment, the wire winding jig 41 can be rotatably mounted on the outer peripheral portion of the pipe T, and the wire W is spirally formed around the outer periphery of the pipe T on the outer peripheral surface. The guide part 54 is provided. Therefore, by rotating the wire winding jig 41, the wire W can be easily wound around the outer peripheral surface of the wire winding jig 41 by the guide portion 54.

  In the pipe reinforcement device of the second embodiment, a rotating device 42 that rotates a wire winding jig 41 with respect to the pipe T is provided as a wire winding device. Therefore, the wire W can be easily wound around the outer peripheral surface of the wire winding jig 41 by rotating the wire winding jig 41 around the pipe T by the rotating device 42.

  In the pipe reinforcement device according to the second embodiment, a drive device 44 capable of forward / reverse rotation driving of a wire reel 68 around which a wire W having a predetermined length is wound is provided as a wire winding device. Therefore, by using the driving device 44 as the wire winding device, the device can be simplified and the cost can be reduced.

  In the piping reinforcement device of the second embodiment, a moving device 43 that moves the wire winding device in the longitudinal direction of the piping T is provided. Therefore, when rotating the wire winding jig 41 with respect to the pipe T by the rotating device 42, the outer peripheral surface of the wire winding jig 41 is moved by moving the drive device 44 in the longitudinal direction of the pipe T by the moving device 43. The wire winding position in can be shifted, and the wire can be easily wound in a spiral shape.

  In the method of reinforcing a pipe to a pipe according to the second embodiment, a step of rotatably mounting a wire winding jig 41 having a ring shape on the outer periphery of the pipe T, and a tip of the wire W are connected to the pipe T. A step of winding the wire W around the outer periphery of the wire winding jig 41 by rotating the wire winding jig 41 around the pipe T and fixing the wire W to the outer periphery of the pipe T; A step of extracting the wire winding jig 41 from between, a step of winding a part of the wire W to wind the wire W around the outer peripheral surface of the pipe T, and a step of cutting the wire W wound around the outer peripheral surface of the pipe T And.

  Therefore, the wire W can be made to follow the outer periphery of the pipe T simply by rotating the wire winding jig 41 with respect to the pipe T, and the wire W can be moved to the outer periphery of the pipe T simply by winding the wire W. It can be wound around the surface, and the workability of the wire winding work around the pipe can be improved. Moreover, the pipe T can be efficiently reinforced by cutting and fixing the wire W wound around the outer peripheral surface of the pipe T.

  In the first embodiment described above, the pipe along the vertical direction is reinforced, and in the second embodiment, the pipe along the horizontal direction is reinforced. The pipe reinforcing apparatus and method according to the present invention are not limited, and the pipe can be reinforced in any direction.

  In the embodiment described above, the split jig of the wire winding jig is connected by the flange portion and the connecting bolt. However, the invention is not limited to this configuration, and may be connected by spot welding, for example.

10, 40 Piping reinforcement device 11, 41 Wire winding jig 12 Drive device (wire winding device, wire winding device)
21, 22, 51, 52 Dividing jig 21a, 22a, 51a, 52a Jig body 21b, 22b Fixing part 21c, 22c, 51b, 52b Flange part 23, 53 Connecting bolt 24, 54 Guide part 25 Helical groove part 26 Guide Hole 31 First driving device (wire winding device)
32 Second drive device (wire winding device)
33, 36, 66 Drive motor 34, 37, 67 Drive shaft 35, 68 Wire reel 38 Relay reel 42 Rotating device (wire winding device)
43 Moving device 44 Drive device (wire winding device)
55 fixed base 56 drive motor 58 drive gear 59 driven gear 61 base 62 drive motor 63 moving base 64 screw shaft 65 nut T pipe S gap W wire Wa wire tip Wb wire rear end

Claims (13)

A wire winding jig that is arranged on the outer periphery of the pipe in a ring shape and causes the wire to follow the outer periphery of the pipe in a spiral shape;
A wire winding device for winding the wire around the wire winding jig;
A wire winding device that winds the wire around the outer peripheral surface of the pipe by winding a part of the wire spirally wound around the outer periphery of the pipe by the wire winding jig;
A piping reinforcement device comprising:   The apparatus for reinforcing a pipe according to claim 1, wherein the wire winding jig includes a plurality of division jigs connected in a ring shape.   The wire winding jig can be fixed with a predetermined gap with respect to the outer peripheral surface of the pipe, guides the tip of the wire to the inner peripheral surface, and spirals the wire to the outer periphery of the pipe The pipe reinforcement device according to claim 1, wherein a guide portion that conforms to the above is provided.   The pipe reinforcement device according to claim 3, wherein the guide portion is a spiral groove portion.   The said wire winding jig | tool is provided with the guide hole which introduces the said wire into the said guide part from the outside, The reinforcement apparatus of the pipe | tube as described in any one of Claims 1-4 characterized by the above-mentioned.   The wire winding device and the wire winding device are drive devices capable of rotating a wire reel wound with a predetermined length of wire forward and backward. The piping reinforcement device according to one item.   A first driving device capable of driving a wire reel around which the wire of a predetermined length is wound forward and backward, and a relay reel provided between the wire winding jig and the wire reel can be driven forward and backward. A second drive device is provided, the wire winding device is the second drive device, and the wire winding device is the first drive device. The reinforcement apparatus of piping as described in any one of these.   The wire winding jig can be rotatably mounted on an outer peripheral portion of the pipe, and a guide portion is provided on the outer peripheral surface to cause the wire to follow the outer periphery of the pipe in a spiral shape. The reinforcement apparatus for piping according to claim 1 or 2.   The said wire winding apparatus is a rotation apparatus which rotates the said wire winding jig with respect to the said piping, The reinforcement apparatus of the pipe | tube of Claim 8 characterized by the above-mentioned.   The pipe reinforcement device according to claim 8 or 9, wherein the wire winding device is a driving device capable of driving a wire reel around which the wire having a predetermined length is wound forward and backward.   The apparatus for reinforcing a pipe according to claim 10, further comprising a moving device that moves the wire winding device in a longitudinal direction of the pipe. Fixing a wire winding jig having a ring shape on the outer periphery of the pipe;
A step of spiraling the wire around the outer periphery of the pipe by the guide portion by feeding the wire from the outside toward the guide portion provided on the inner peripheral surface of the wire winding jig;
The step of winding the wire around the outer peripheral surface of the pipe by fixing the tip of the wire to the outer peripheral surface of the pipe and winding a part of the wire;
Cutting and fixing the wire wound around the outer peripheral surface of the pipe; and
A method of reinforcing a pipe, comprising: A step of rotatably mounting a wire winding jig having a ring shape on the outer periphery of the pipe;
A step of winding the wire spirally around the outer peripheral surface of the wire winding jig by fixing the tip of the wire to the outer peripheral surface of the pipe and rotating the wire winding jig with respect to the pipe;
Extracting the wire winding jig from between the pipe and the wire;
Winding the wire around an outer peripheral surface of the pipe by winding a part of the wire;
Cutting and fixing the wire wound around the outer peripheral surface of the pipe; and
A method for reinforcing a pipe to a pipe, comprising:

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