JP2015209970A - Pipe damaged part encapsulation band fixation tool and method for fixing pipe damaged part encapsulation band - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe damaged part encapsulation band fixation tool for repairing a pipe damaged part and a method for fixing a pipe damaged part encapsulation band.SOLUTION: This invention relates to a pipe damaged part encapsulation band fixing tool for repairing the pipe damaged part. This tool has a band in which both ends in a peripheral direction have a wedge-like clearance and the band is formed into band-shape by thin plates so as to be laid over a pipe entire inner peripheral surface and an implantation wedge so as to bury the clearance in the circumferential direction of the band to cause the band to be closely fixed to the pipe inner peripheral surface. The band and the implantation wedge are applied to cause the fixing plates connected to each other after laying to connect the adjoining bands to each other.

Description

  The present invention relates to an in-pipe damaged portion sealing band fixing tool and an in-pipe damaged portion sealing band fixing method for repairing a damaged portion in a pipe such as a water pipe or sewage distribution pipe or an industrial drain pipe.

  Conventionally, repair parts and repair methods have been proposed to repair damaged parts in water pipes such as water and sewage or industrial drainage pipes, and various repair methods are used at construction sites. Has been.

  And the same applicant invented the damage part sealing band in a pipe | tube in patent document 1 as one proposal, and disclosed the content concretely.

JP 2014-58995 A (see FIG. 3)

  That is, as shown in FIG. 3, the damaged pipes 21, 23, 24 and the driving wedge 25 cover the inner surface of the drain pipe 21 or the like in the part having the damaged section, and then securely drain the pipe 21. In order to fix the three damaged portion sealing bands 22, 23, 24 and the driving wedge 25 on the inner surface, etc., screw holes are respectively formed. It is difficult to produce and firmly fixed.

  However, when the anchor bolt is attached and tightened, the positional displacement hardly occurs temporarily and it is firmly fixed. However, since the local stress is applied to the inner surface of the pipe by the anchor bolt, the drain pipe or the like is changed with time. Deterioration of the inner surface advances and a gap is easily generated between the tip of the anchor bolt and the inner surface of the drain pipe or the like. In addition, the bolt tip portion is slightly vibrated by an earthquake or other vibration, which causes a phenomenon in which the surface of the drain pipe or the like is scraped off, and this aspect also lacks reliability. For this reason, it is difficult to fix the damaged portion sealing band in a predetermined state over a long period of time using such a conventional anchor bolt mounting method.

  Under such circumstances, there is a need for a repair part and a repair method in which the repair work is simple and does not require labor, and the repair portion is stable and the sealing effect is sustainable.

  The present invention solves the above-described problems, and lays an in-tube damaged portion sealing band for repairing a damaged portion in the tube in a portion including the damaged portion on the inner surface of the tube, and the band is attached to the inner surface of the tube. In-pipe damaged part sealing band fixing tool and the band used in the damaged part surely without being deteriorated or loosened by various phenomena with time change after being in close contact An object of the present invention is to provide a method for fixing a damaged portion sealing band in a tube.

  In order to achieve the above object, according to the first aspect of the present invention, in the in-pipe damaged part sealing band fixture for repairing a damaged part in the pipe, both ends in the circumferential direction have wedge-shaped gaps. A band formed of a thin plate so as to be laid over the entire inner peripheral surface of the pipe, and the gap between both ends in the circumferential direction of the band are filled and the band is brought into close contact with the inner peripheral surface of the pipe when installed. The band and the driving wedge are configured such that a fixing plate connected to each other after laying connects and fixes adjacent bands to each other. .

  According to the second aspect of the present invention, in the in-pipe damaged part sealing band fixing method for repairing a damaged part in the pipe, both ends in the circumferential direction have wedge-shaped gaps and the entire inner peripheral surface in the pipe A band formed in a strip shape with a thin plate so as to be laid over the circumference, and a driving configured to be wedge-shaped so as to fill the gap in the circumferential direction of the band and to bring the band into close contact with the inner peripheral surface of the pipe when mounted A fixing method in which a wedge and a fixing plate for connecting and coupling the band and the writing wedge are sequentially laid, and after the band and the writing wedge are installed, the band and the writing wedge are connected by the fixing plate. To do.

  According to the first aspect of the present invention, since the band and the driving wedge are configured so that the fixing plates connected to each other after laying connect and fix the adjacent bands, it is possible to repair a damaged portion in the pipe. The damaged band in the tube is laid on the part including the damaged part on the inner surface of the tube, and the band is brought into close contact with the inner surface of the tube, and no local stress is generated. In addition, it is possible to provide an in-tube damaged portion sealing band fixing device that is surely installed in a damaged portion without causing loosening of the band, and to repair the in-tube damaged portion.

  Further, according to the invention described in claim 2, the in-tube damaged part sealing band for repairing the damaged part in the pipe is laid in a site including the damaged part on the inner surface of the pipe, and the band is brought into close contact with the inner surface of the pipe. In-pipe damaged part sealing band using in-pipe damaged part sealing band fixture securely installed in damaged part without deterioration or loosening of the band due to various phenomena with time change A fixing method can be provided.

It is the perspective view explaining installation of the damage part sealing band fixing tool in a pipe by one embodiment of this invention. It is the perspective view which installed the wedge attachment tool of the damage part sealing band in a pipe | tube by one Embodiment of this invention. It is a perspective view of the conventional in-tube damage part sealing band.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, there is a case where water leakage or a partial defect of a joint portion of the drainage pipe 21 or the like may occur inside the existing drainage pipe 21 or the like, and it is necessary to repair such a damaged part 21a. Is one of the solutions.

  A damaged portion sealing band formed of a stainless steel plate having a thickness of 5 mm and a width of 200 mm is attached to the inner circumferential surface including the damaged portion 21a. The thickness and width of the damaged portion sealing band are appropriately set according to the inner diameter of the existing drain pipe 21 to be applied and the width of the damaged portion, and the thickness may reach 12 millimeters or more.

  FIG. 1 is a perspective view when the damaged portion sealing bands 22, 23 and 24 and the driving wedge 25 to which the present invention is applied are installed. The existing drain pipe 21 and the like are manufactured and installed, for example, as a fume pipe having an inner diameter of 1100 millimeters.

  This damaged portion sealing band may be composed of a single sheet, but in the present embodiment, it is composed of three damaged portion sealing bands 22, 23 and 24 and a driving wedge 25 for convenience of transportation. Further, as shown in FIG. 1, a driving wedge 25 is disposed at the joint portion at both ends of the damaged portion sealing bands 22, 23, 24. In order to insert the driving wedge 25 into the gap 28, one is a wide opening 25b and the other is a narrow opening 25a. That is, as shown in FIG. 1, the damaged portion sealing band is formed by connecting three bands 22, 23, and 24, and a driving wedge 25 is inserted into a joint portion at both ends formed on the lower side. A gap 28 is formed.

  The wedge-shaped inclination angle is preferably 8 to 9 ° from the experimental results. Further, elongated projections 25c are formed on both sides of the inclined wedge-shaped end surface as shown in FIG. The elongated protrusions 25c on both sides of the end face are fitted into the thin-width grooves 22a and 24a formed at the joint portions at both ends when the driving wedge 25 is inserted into the joint portions at both ends of the sealing bands 22 and 24. Combined.

  In the present invention, a fixing plate 34 is attached to each joint portion of the sealing bands 22, 23, 24 and the driving wedge 25 configured as described above to cause water leakage or partial leakage of the joint portion such as the drain pipe 21. The repair of the damaged portion 21a such as a defect is completed.

  That is, as shown in FIG. 1, screw holes 22b, 24b and 25d are formed in the end portions of the sealing bands 22 and 24 and the central portion of the driving wedge 25, respectively. The fixing plate 34 is formed with screw mounting holes 34a and 34b so as to correspond to these screw holes. Here, the screw mounting holes 34a and 34b are taken into account because the end portions of the sealing bands 22 and 24 and the driving wedge 25 are extended and contracted and manufacturing errors occur. That is, the screw attachment holes 34a corresponding to the screw holes 22b and 24b of the sealing bands 22 and 24, respectively, are long holes in the circumferential direction, and the screw attachment holes 34b corresponding to the screw holes 25c of the driving wedge 25 are long in the cylindrical direction. It is formed as a hole.

  For the laying of the fixing plate 34, the three sealing bands 22, 23, 24 are connected and temporarily fixed to the inner surface of the drain pipe 21, etc., and finally the driving wedge 25 is formed on the inner surface of the drain pipe 21 etc. from the cylindrical direction. After being inserted into the gap 28 at the joint portion at both ends, the fixing plate 34 is installed in accordance with the screw holes 22b, 24b and 25c, and the mounting screws are attached to the respective screw holes 22b, 24b and 25d.

  That is, it means that the inner diameter of the entire sealing band swells greatly due to the insertion of the driving wedge 25, thereby acting to bring the sealing bands 22, 23, 24 into close contact with the inner surface of the drain pipe 21, etc. If left unattended, a displacement or the like tends to occur in the direction in which the driving wedge 25 is removed. For this purpose, the fixing plate 34 is attached to maintain the strong attachment state at the beginning of the installation of the damaged portion sealing bands 22, 23, 24 and the driving wedge 25 so that such a problem does not occur.

  In the above-described embodiment, the embodiment in which the fixing plate 34 is attached to the driving wedge 25 has been described. However, the fixing plate 34 may be attached to the joint between the sealing bands 22, 23, and 24.

  Moreover, although the embodiment in which the fixing plate 34, the sealing bands 22, 23, 24, and the driving wedge 25 are connected by screws has been described, the present invention is not limited to this, and the present invention is not limited to this. You may combine by.

  In addition, this invention is not limited to the said embodiment, Embodiment can be changed suitably and implemented within the range of the technical idea of this invention.

21; Existing drain pipe 21a; Damaged parts 22, 23, 24; Damaged part sealing band 25; Driving wedge 34; Fixing plate

Claims (2)

In the damaged band sealing band fixing tool for repairing the damaged part in the tube,
A band formed in a strip shape with a thin plate so that both ends in the circumferential direction have a wedge-shaped gap and are laid over the entire inner peripheral surface of the pipe,
And a driving wedge configured in a wedge shape so as to fill the gap in the circumferential direction of the band and to bring the band into close contact with the inner peripheral surface of the pipe at the time of mounting,
The in-tube damaged portion sealing band fixing tool, wherein the band and the driving wedge are configured such that fixing bands that are connected to each other after laying connect the adjacent bands. In the damaged band sealing band fixing method for repairing the damaged part in the tube,
A band formed in a strip shape with a thin plate so that both ends in the circumferential direction have a wedge-shaped gap and are laid around the entire inner circumferential surface of the pipe, and the gap in the circumferential direction of the band is filled and mounted Sometimes, a driving wedge configured in a wedge shape so that the band is in close contact with the inner peripheral surface of the pipe, and a fixing plate for connecting the band and the driving wedge are laid sequentially.
An in-tube damaged portion sealing band fixing method, wherein the band and the writing wedge are connected by the fixing plate and fixedly coupled after the band and the writing wedge are laid.

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