KR20060033609A - The repairing device for inside of non-excavation pipe - Google Patents

Abstract

The present invention is to adhere to the inner surface of the conduit for repair of the abnormal part of the conduit, by using a mechanical device having an expansion pressure, the felt impregnated with the adhesive resin liquid, even after dismantling the machinery immediately after the close contact The present invention relates to an inner surface repair apparatus of a non-excavated conduit in which a contact force of a felt with respect to an inner surface of a conduit can be continuously maintained, wherein the incision 11 is formed on one side to have a variable diameter; A locking part (2) for fixing the tubular body (1) in an expanded state; Attached along the outer circumference of the pipe (1) and composed of a felt (3) impregnated with an adhesive resin has the effect of ensuring the speed and efficiency and economic efficiency of the work.

Tube, Locking part, Felt, Incision, One-way tooth, Locking piece, Long hole

Description

The repairing device for inside of non-excavation pipe

Figure 1 is an exploded perspective view of the overall configuration of the present invention.

Figure 2a, Figure 2b is showing the configuration and action of the locking portion of the present invention,

2A is a partially enlarged view showing a state before coupling;

Figure 2b is a partially enlarged view showing a state of engagement.

3 is a cross-sectional view showing a state of use of the present invention.

4 is a cross-sectional view taken along the line A-A of FIG.

* Explanation of symbols for main parts of the drawings

1: tube

  11: Incision 12: Breakaway Jaw

  13: Reinforcing rib

2: locking section

  21: one-way teeth 22: long

  22a: taper 23: insertion hole

  23a: oval hole 24: locking piece

  25: extension part 26: insertion protrusion

  26a: front slope 26b: rounding part

  27: fixed jaw portion 27a: rear slope

3: felt

The present invention relates to a device for repairing the inner surface of a non-excavated pipe, and more specifically, to repair an abnormal portion of the pipe, using a mechanical device having an expansion pressure on the inner surface of the pipe, the felt impregnated with an adhesive resin solution. When closely contacted, the present invention relates to an internal repair device for an unexcavated pipeline, which allows the felt's adhesion to the inner surface of the pipeline to be maintained continuously even after the mechanical device is immediately dismantled.

In general, partial repair of small diameter pipes, such as small sewage pipes, water pipes, and gas pipes, which are partially buried, or abnormalities such as gaps or gaps in the joints of the pipes, is usually performed. This impregnated annular felt is used.

That is, after the felt against the inner surface of the pipeline of the abnormal portion, by installing a mechanical device having a rubber pack inside the felt to be in close contact with the felt on the inner surface of the pipeline by the expansion pressure of the rubber pack, The felt is continuously pressed with a rubber pack until the impregnated adhesive resin solution is hardened, and then the withdrawal of the mechanical device is made while the felt is hardened and hardened.

However, the conventional method of repairing the inner surface of the non-excavated pipe line does not withdraw the mechanical device that presses the inside of the felt until it is completely hardened in a state in which the felt is in close contact with the pipe to be repaired. There was a problem that caused inefficiency.

Accordingly, the present invention has been made to solve the conventional problems as described above, the purpose of the adhesive resin liquid using a mechanical device having an expansion pressure on the inner surface of the pipeline for repairing the abnormal portion of the pipeline When the impregnated felt is brought into close contact, the contact force of the felt against the inner surface of the conduit can be maintained even after the mechanical device is removed immediately after the close contact.

In addition, an object of the present invention is to convey the pipe used to maintain the adherence of the abnormal portion of the pipe line as described above and maintaining the adhesion of the felt to the inner surface of the pipe line, that is, the pipe with a felt attached to the outside of the pipe side When doing so, it is possible to prevent the felt from being released from the tube.

In addition, an object of the present invention is to enable the strength reinforcement for the tube.

It is also an object of the present invention to make it easier to form a locking means for the tube having a variable diameter in the tube.

In order to achieve the object of the present invention, the incision is formed on one side and the tube having a variable diameter; A locking part to fix the tubular body in an expanded state; Attached along the outer periphery of the tube and provided with an inner repair device of the non-excavated pipeline, characterized in that consisting of a felt impregnated with the adhesive resin.

In addition, the separation prevention protrusion protruding to a predetermined length along the circumference of the tubular body is formed to be fixed to the felt attached along the outer circumference of the tubular body.

In addition, a plurality of reinforcing ribs forming a plurality of irregularities in the longitudinal direction of the circumference on the tubular body between the separation prevention jaw is characterized in that configured to the strength reinforcement for the tubular body.

In addition, the locking part is formed on the one end side of the tube, a pair of one-way teeth facing each other in the circumferential length direction of the tube body, and the other end side of the tube body is moved along the one-way tooth during expansion and fixed in the opposite direction A locking piece is formed.

In addition, the one-way teeth are formed together with the forming of the long hole formed along the circumferential longitudinal direction of the tube by press working, the insertion hole is formed on the rear side of the long hole wider than the long hole; The locking piece extends from the other end of the tubular body by press working, and an insertion protrusion corresponding to the insertion hole is formed at the tip of the extension portion having the same width as that of the long hole, and an insertion protrusion and a rear extension of the insertion protrusion. The fixed jaw portion is formed integrally with both sides at intervals.

In addition, the insertion hole is formed of an elliptical hole communicating with the long hole, the insertion protrusion forms a front inclined surface narrower toward the front end, characterized in that the rounded portion is formed at both rear corners.

In addition, the taper is formed in the long hole of the other end of the insertion hole is characterized in that the width is gradually narrower than the long hole toward the front side.

In addition, the fixing jaw portion is characterized in that the width is gradually formed toward the rear side to form a rear inclined surface formed integrally with the other end of the tube.

In addition, the tube is characterized in that formed of a stainless material.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration of the present invention according to the embodiment.

1 is an exploded perspective view showing the overall configuration of the present invention.

As shown therein, the present invention comprises a tubular body 1 formed of a cylindrical body made of stainless steel, and a felt 3 wound around the outer circumference of the tubular body 1.

The tubular body 1 has an incision 11 formed at one side such that the diameter is variable by an external force, and both ends of the tubular body 1 separated from each other by the incision 11 are locked by the locking part 2. Only expansion is possible and configured to be secured in the opposite direction.

Referring to this in more detail with reference to FIG. 2A, the locking part 2 is configured to be expanded only by using one-way teeth 21 and the opposite direction is fixed, and the one-way teeth 21 is fixed. Is formed at one end of the tubular body 1, and a locking piece 24 is formed at the other end of the tubular body 1 to move along the one-way teeth 21.

The one-way teeth 21 are formed together when forming the long hole 22 by press working, the long hole 22 forms a narrow and long hole shape along the circumferential length of the tubular body 1, A pair of one-way teeth 21 are formed integrally opposite to each other in the inside of the hole, and an insertion hole made of an elliptical hole 23a having a width greater than that of the long hole 22 on the rear side of the long hole 22 ( 23 is successively formed, and the tapered portion 22a of which the width gradually narrows toward the front side is formed in the other long hole 22 of the insertion hole 23.

The locking piece 24 has an extension part 25 formed at a predetermined length from the other end of the tubular body 1, and an insertion protrusion part inserted into the insertion hole 23 of the long hole 22 at the tip of the extension part 25. 26 is integrally formed, and both sides of the rear extension portion 25 of the insertion protrusion 26 are provided with fixed jaw portions 27 at intervals from the insertion protrusion 26.

The extension portion 25 has the same width as the long hole 22, the insertion protrusion 26 has a width and width corresponding to the insertion hole 23 of the long hole 22, the insertion to the insertion hole 23 To facilitate this, the front inclined surfaces 26a which are symmetrical to each other are formed so that the width is gradually narrowed toward the front side, and rounding portions 26b are formed at the rear both corner portions.

In addition, the fixing jaw portion 27 is formed integrally with the other end of the tubular body 1 while forming a rear inclined surface 27a, the width of which gradually increases toward the rear side, that is, toward the other end side of the tubular body 1 to increase the bearing force. Configured.

Next will be described in detail with reference to Figures 2a and 2b attached to the operation of the locking portion of the present invention configured as described above.

First, the insertion protrusion 26 of the locking piece 24 is inserted into the insertion hole 23 of the long hole 22, and then the locking piece 24 is pulled in the expanding direction to form a one-way tooth 21 portion of the long hole 22. It moves to connect between both ends of the tubular body 1 separated by the incision 11.

Then, the felt 3 impregnated with the adhesive resin liquid is wound around the outer periphery of the tube 1, and then placed on a partially broken pipe using a robot (not shown).

Then, by installing a mechanism inside the tubular body 1 so that the rubber pack of the machinery is inflated, the expansion pressure acts from the inside of the tubular body 1 to the outside. The locking piece 24 inserted therein is moved in the expansion direction along the one-way teeth 21 as shown in FIG. 2B, so that the expansion of the tubular body 1 is made, and the expansion tube of the tubular body 1 is expanded. Felt (3) wound around the outer periphery of the tubular body (1) is in close contact with the inner surface of the conduit (100).

Even if the mechanical device installed inside the tubular body 1 is dismantled in this state, the fixing jaw portion 27 of the locking piece 24 is fixed to the straight portion of the one-way tooth 21 to fix the felt 3 by the tubular body 1. The state of close contact is maintained continuously, and the felt 3 is hardened together by time after the impregnated adhesive resin liquid hardens to complete partial repair work on the inner surface of the series of pipes.

3 is a longitudinal sectional view showing a state of use of the present invention, Figure 4 is a cross-sectional view taken along the line A-A of FIG.

As described above, the present invention is in close contact with the felt 3 against the inner surface of the pipe line 100 by expansion of the pipe body 1, and the felt 3 has both end sides along the circumference of the pipe body 1. By the departure prevention projections 12 protruding to a predetermined length, when the pipe body 1 is transported along the inside of the pipeline 100, it is to prevent the felt 3 from being separated from the pipe body (1).

In addition, a plurality of reinforcing ribs 13 forming a plurality of unevennesses are formed on the tube 1 between the release preventing jaw 12 so that reinforcement can be made to the tube 1 according to external impact or ground subsidence. It will be able to prevent the risk of deformation and damage.

As described above, the present invention is to contact the inner surface of the conduit for the repair of the abnormal part of the conduit, when the felt impregnated with the adhesive resin liquid by using a mechanical device having an expansion pressure, the machine immediately after close contact By maintaining the adhesion of the felt to the inner surface of the pipeline even in the state of demolition, it is possible to secure the speed, efficiency and economic efficiency of the work.

In addition, the present invention is a pipe used for maintenance of the abnormal portion of the pipe line as described above and maintaining the adhesion of the felt to the inner surface of the pipe, that is, when conveying the pipe with a felt attached to the outside of the pipe side By preventing the detachment of the felt from the tubular body, there is an effect that the accuracy and simplicity of the operation can be given.

In addition, the present invention has the effect of preventing the risk of deformation and fracture due to external impact or ground subsidence by allowing the strength of the pipe can be reinforced.

In addition, the present invention is to provide a locking means for the pipe having a variable diameter in the pipe can be made more simply to reduce the production cost, as well as the convenience and efficiency of the operation, the productivity can be improved have.

Claims (9)

An incision 11 is formed at one side and a tube 1 having a variable diameter; A locking part (2) for fixing the tubular body (1) in an expanded state; The inner surface repair apparatus of the non-excavated pipeline, characterized in that the felt (3) attached along the outer periphery of the tube (1) and impregnated with an adhesive resin liquid. The method of claim 1, A separation prevention protrusion 12 protruding at a predetermined length along the circumference of the tubular body 1 is formed to be fixed to the felt 3 attached to the outer circumference of the tubular body 1. Inner repair device for unexcavated pipeline. The method of claim 2, A plurality of reinforcing ribs 13 forming a plurality of irregularities along the longitudinal direction of the circumference on the tube 1 between the departure prevention jaw 12 is configured to be configured to strengthen the strength of the tube (1) Inner repair device for unexcavated pipeline. The method of claim 1, The locking portion 2 forms a pair of one-way teeth 21 opposed to each other on one side end side of the tubular body 1 in the circumferential length direction of the tubular body 1, and extends to the other end side of the tubular body 1. The inner surface repair apparatus of the non-excavated pipeline, characterized in that the locking piece 24 is moved along the one-way teeth 21 and fixed in the opposite direction. The method of claim 4, wherein The one-way teeth 21 are formed together during the molding of the long holes 22 formed along the circumferential length direction of the tubular body 1 by press working, and wider than the long holes 22 on the rear side of the long holes 22. An insertion opening 23 is formed; The locking piece 24 extends from the other end of the tubular body 1 by press working and is inserted into the front end of the extension part 25 having the same width as that of the long hole 22. (26) is formed, the rear end portion 25 of the insertion protrusions 26 of the non-excavation pipe, characterized in that the fixing jaw portion 27 is integrally formed on both sides at intervals from the insertion protrusions (26). Internal repair device. The method of claim 5, The insertion hole 23 is formed of an elliptical hole 23a communicating with the long hole 22, and the insertion protrusion 26 forms a front inclined surface 26a that is narrower toward the tip, and has rounding parts at both rear corners thereof. 26b), the inner surface repair apparatus of the unexcavated pipeline. The method of claim 6, Tapered (22a) is formed in the long hole (22) of the other end of the insertion port 23, the inner surface repair apparatus of the non-excavated pipeline, characterized in that configured to gradually become narrower than the long hole (22) toward the front side. The method of claim 5, The fixing jaw portion 27 forms a rear inclined surface 27a that gradually increases in width toward the rear side, and is configured to be integrally formed at the other end of the pipe body 1, wherein the inner surface repair apparatus of the non-excavated pipeline. The method according to any one of claims 1 to 8, The tubular body (1) repairing the inner surface of the non-excavated pipeline, characterized in that formed of a stainless material.

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