KR102535797B1 - Traction Head for New Pipe Close Fit Lining Process for Water or Sewage Pipe Rehabilitation - Google Patents

Abstract

The present invention fixes the new pipe, which is mainly a polyethylene (PE) pipe, with high strength to the traction head that pulls the high-strength new pipe in the new pipe insertion method for complete structural reinforcement and rehabilitation of the existing pipe, while compressing the new pipe to be inserted into the old pipe, reducing the pipe diameter It relates to a traction head having a fuse coupling part that can be bent so that it can be reduced together with the fuse inside the fuse when the fuse is opened. When the front end of the pipe is fixed to the traction head by screwing, etc., the length is long so that it can be inserted deeply into the polyethylene pipe, which is the fuse, so that the fixing strength can be maintained strongly, and the flexible material so that the pipe diameter can be reduced together with the fuse when the fuse is compressed. Alternatively, by providing a traction head including a length extension for fixing the fuse having a joint structure, it is possible to perform stable traction work by preventing damage to the fuse connection during traction.

Description

Traction Head for New Pipe Close Fit Lining Process for Water or Sewage Pipe Rehabilitation}

The present invention relates to a traction head for a fuse insertion method (CFL) that is fixed with a fuse for regeneration of water and sewage pipes, and in particular, traction that pulls a high-strength fuse in a fuse insertion method for complete structural reinforcement and rehabilitation of an existing pipe. While fixing the fuse, which is mainly a polyethylene (PE) tube, to the head with high strength, when the tube is compressed to be inserted into the old tube and the tube diameter is reduced, the traction head equipped with a fuse coupling part that can be bent so that it can be reduced together with the fuse inside the fuse it's about

Underground pipes, such as water supply pipes and sewer pipes, are corroded or eroded by moisture outside the pipes and water or oil inside the pipes over time after burial, and are also damaged by tectonic shifts and external shocks. In this way, when damage accumulates in underground pipes, pipe replacement or repair is required. However, replacing or repairing pipes by digging the ground is a long-term construction involving a large-scale excavation process, requiring huge construction costs as well as traffic due to construction. It is accompanied by many problems such as disability.

In order to minimize the problems of these excavation works, various methods of rehabilitation of aged pipes have been developed. Representative regeneration methods include a cleaning method for the purpose of removing foreign matter or scale that adheres gently to the pipe, a customs method that can remove rust or dirt that is firmly attached, and a pipe cross-sectional area by removing rust and scale in the pipe. Corrosion prevention or structural reinforcement, such as inner pipe lining method, etc. have been developed and applied.

One of these methods, Close-Fit Lining, which mainly uses polyethylene (PE) pipes, is a method that completely closes polyethylene pipes inserted into existing pipes, and was developed to make the most of the space inside the existing pipes. The polyethylene pipe inserted for replacement is drawn to reduce its thickness before being inserted into the existing pipe, but after installation, the original pipe is fully adhered to the existing pipe and restored. The typical construction form of this method is also called the Swage Lining Method in the sense of thinning the end of the pipe.

However, in the process of drawing and inserting a new tube in the process of implementing the swage lining method for insertion adhesion, there is great resistance to the advancement of the new tube depending on the degree of curvature of the old tube and the degree of contamination inside the old tube. Resistance due to the insertion of the fuse is concentrated at the front end of the fuse fixed to the traction head, and the fuse fixed to the traction head with a bolt or the like may be torn or cut. In order to solve this problem, there is a method of increasing the contact area between the traction head and the fuse, but there is a limit to increasing the length of the traction head due to the situation in which the fuse must be thinly stretched for insertion.

Korean Patent Registration No. 1505668 relates to 'a method for constructing a swage lining of an existing pipe', and discloses a method for constructing a swage lining for an existing pipe in which an existing pipe buried in the ground is swage-lined with a liner pipe using a swaging die. . While the above invention explains the drawing and configuration of the traction head, it is explained that the traction head can be firmly coupled by a plurality of bolts. In this case, there is a problem that the bolt joint may be damaged.

Korean Registered Patent No. 1505668, ‘Method of constructing swage lining of existing pipe’

When the front end of the polyethylene pipe is fixed to the traction head by screwing, etc., the length is long so that it can be inserted deeply into the polyethylene pipe, which is the fuse, so that the fixing strength can be maintained strongly. It is intended to provide a traction head having a length extension that is flexible or includes a joint structure so as to be reduced.

The present invention is a traction head for insertion closure method (CFL) fixed to a new pipe for regeneration of water and sewage pipes, wherein the traction head is provided with a fastening hole so that a draw bar is fastened through the center of the peak, and a screw thread on the side wall. a conical body portion having a plurality of fastening holes formed therein and having a bottom diameter smaller than an inner diameter of the fuse; and a plurality of band-shaped extensions extending from the bottom of the conical body along a sidewall direction, having a plurality of fastening holes having threads formed on an outer surface thereof, and arranged at intervals from each other, wherein the plurality of band-shaped extensions are inside the fuse. Provided is a traction head for an insertion closure method (CFL) fixed to a new pipe for regeneration of water and sewage pipes, which is provided with a bent part or made of a material having elasticity so that it can be bent and inserted.

In the present invention, the belt-shaped extension part includes a first-stage bent part and a second-stage bent part, the first-stage bent part is in contact with the inner diameter of the fuse, and the second-stage bent part is in a swaged state of the fuse Provides a traction head for insertion closure method (CFL) that is fixed with a new pipe for regeneration of water and sewer pipes, in contact with the inner diameter of

In the present invention, the conical body part and the belt-shaped extension part are separable from each other, and the belt-shaped extension part is screwed to the conical body part, and the traction head for the insertion compaction method (CFL) fixed to the new pipe for regeneration of water and sewage pipes provides

In the present invention, the fastening hole of the main body part further comprises a fixing nut for fastening the towbar exposed through the penetration of the towbar under the lower surface of the main body part, an insertion tight operation method that is fixed to the new pipe for regeneration of water and sewage pipes (CFL) tow head is provided.

In the present invention, the fastening hole of the main body part has a nut-shaped screw thread coupled to the bolt-shaped drawbar thread to fasten the bolt-shaped drawbar thread having a screw thread therein, for regeneration of water and sewage pipes. Provides a traction head for CFL that is fixed with the fuse.

To rehabilitate the water supply and sewage pipes of the present invention, the traction head for the insertion sealing method (CFL) fixed with the new pipe is inserted into the polyethylene pipe, which is the new pipe, so that the fixing strength can be maintained strongly when the front end of the polyethylene pipe is fixed to the traction head by screwing or the like. Provides a traction head that includes a length extension for fixing the fuse with a flexible material or joint structure so that the tube diameter can be reduced along with the fuse when the fuse is compressed and long enough to be inserted deeply, preventing damage to the fuse connection during traction. By doing so, stable towing operation can be performed.

1 is a perspective view (a) of a shape including an integral extension and a shape including a separate extension of a traction head for an insertion closure method (CFL) fixed to a new pipe for regeneration of water and sewer pipes according to one embodiment of the present invention. It is a schematic diagram showing a side view (b) for.
FIG. 2 is a conceptual diagram showing a shape in which a new pipe is screwed to a traction head for an insertion tightness method (CFL) that is fixed to the new pipe for regeneration of water and sewage pipes according to an embodiment of the present invention and approaches with a drawing device.
3 is a conceptual diagram showing a shape in which a new pipe is screwed to a traction head for a CFL (CFL) that is fixed to the new pipe for regeneration of water and sewage pipes according to an embodiment of the present invention and is pulled out by a drawing device.
Figure 4 is an insertion close-fitting method in which the new pipe is screwed to the traction head for the new pipe and fixed to the new pipe for the regeneration of the water and sewage pipes in accordance with one embodiment of the present invention, passing through the drawing device and approaching the old pipe. It is a conceptual diagram showing (CFL).

Prior to the detailed description of the present invention, the terms or words used in the present specification and claims described below should not be construed as being limited to common or dictionary meanings. Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention, various equivalents that can replace them at the time of the present application It should be understood that there may be waters and variations. Hereinafter, a preferred embodiment to the extent that a person skilled in the art to which the present invention pertains can be easily practiced will be described in detail with reference to the drawings.

The insertion tightness method (PE-CFL) refers to a method of inserting an inner pipe into an existing pipe, and the inner pipe for insertion used in the present invention adopts a polyethylene pipe having a thickness and strength that can be used as a single pipe by itself. Therefore, in the complete structural reinforcement method of the present invention, the life of the polyethylene pipe used as the inner pipe is the same as that of a normal pipe.

1 is a perspective view (a) of a shape including an integral extension and a shape including a separate extension of a traction head for an insertion closure method (CFL) fixed to a new pipe for regeneration of water and sewer pipes according to one embodiment of the present invention. It is a schematic diagram showing a side view (b) for. The present invention relates to a traction head (1) for an insertion closure method (CFL) fixed to a new pipe for regeneration of water and sewage pipes. It is provided with a fastening hole 11 as much as possible, and a plurality of fastening holes 12 having threads are formed on the side wall, and the bottom diameter length h is smaller than the inner diameter l of the fuse 3. body portion 10; and a plurality of strip-shaped extensions 20 extending from the lower surface of the conical main body along the sidewall direction, having a plurality of fastening holes 22 formed with threads on the outer surface thereof, and arranged at intervals from each other. Threads 14 are formed in the plurality of fastening holes 12 of the main body 10 according to one embodiment of the present invention so that the fuse can be coupled with the screws fixing the main body. In one embodiment of the present invention, threads 24 are formed in the plurality of fastening holes 22 of the band-shaped extension 20 so that the fuse can be coupled with the screws fixing the band-shaped extension. Since the traction head according to one embodiment of the present invention inserts the new pipe 3 into the old pipe 7 of the water supply and sewage pipe in the landfill section, it enters from the starting work tool 100 among the work tools at both ends of the landfill section and moves inside the old pipe. It is connected to the draw bar 2 that passes through and advances to the arrival work tool 200 to pull the new pipe. The towing bar 2 may have a prefabricated structure and receives traction force by the traction unit 5 .

In one embodiment of the present invention, the conical body portion and the strip-shaped extension portion may be separable from each other, and the strip-shaped extension portion may have a shape that is screwed (25) to the conical body portion. In this way, the detachable strip-shaped extension can secure more diversity than the integral type in the length, thickness and material selection of the extension.

In one embodiment of the present invention, the plurality of band-shaped extensions may be formed of a material having elasticity or having a bent portion so as to be bent and inserted into the fuselage. In one embodiment of the present invention, when the band-shaped extension part is made of the same material as the traction head, the thickness may be adjusted so as to be elastically maintained, or a joint structure capable of bending in one direction or in both directions may be provided. Through this joint structure, the band-shaped extension can be screwed into the fuse in a bent state in a direction parallel to the inner diameter of the fuse.

2 is a shape in which the new pipe is fixed by screwing (8) to the traction head for the insertion closure method (CFL) that is fixed to the new pipe for regeneration of water and sewage pipes according to one embodiment of the present invention and approaches the drawing device (4) 3 is a conceptual diagram showing, in accordance with one embodiment of the present invention, the fuse 3 is fixed to the traction head for the insertion closure method (CFL) that is fixed to the fuse for regeneration of the water and sewer pipes by screwing 8 to pull out the It is a conceptual diagram showing a shape drawn from the drawing part 30 of the device 4. In one embodiment of the present invention, the screw coupling 8 between the fuse and the traction head is inserted deeply through the thickness of the fuse to reduce resistance when pulled out due to traction, so that it is not caught on the pull-out. In one embodiment of the present invention, the band-shaped extension includes a first-stage bent portion 33 and a second-stage bent portion 333, the first-stage bent portion 33 is in contact with the inner diameter of the fuse, and The two-stage bent portion 333 may be configured to contact the inner diameter of the fuse in a swaged state. The first-stage bent portion is fixed in contact with the inner diameter of the fuse, and the second-stage bent portion is not separately bent until it passes through the drawing unit of the drawing device, and then is bent together as the tube diameter of the fuse decreases while passing through the drawing portion. In this way, the tube diameter of the fuse can be reduced by passing through the drawing part flexibly while firmly maintaining the fixed state of the traction head and the fuse connection.

In one embodiment of the present invention, the fastening hole of the main body part takes a configuration that further includes a fixing nut 15 for fastening the tow rod exposed through the passage of the tow rod under the lower surface of the main body part. Through this, there is an effect that the draw rod and the traction head are not separated even when strong tension acts when the draw rod pulls the traction head.

In one embodiment of the present invention, the fastening hole of the body part takes a configuration in which a nut-shaped thread coupled to the bolt-shaped drawbar thread is formed therein so as to fasten the bolt-shaped drawbar having a thread. . By taking such a configuration, it has the effect of allowing the towing head body itself to form a large nut part together with the fixing nut for fixing the towbar.

Figure 4 is an insertion close-fitting method in which the new pipe is screwed to the traction head for the new pipe and fixed to the new pipe for the regeneration of the water and sewage pipes in accordance with one embodiment of the present invention, passing through the drawing device and approaching the old pipe. (CFL) is a conceptual diagram. Figure 4 (a) is a state in which the new pipe is fixed to the traction head for the insertion closure method (CFL) that is fixed to the new pipe for the regeneration of the water supply and sewage pipes of the present invention, the traction head is connected to the draw bar, so that the pulling force of the traction unit It shows a conceptual diagram of access to the pulling device by At this time, the inner diameter of the fuse has a length of (l), and the band-shaped extension of the traction head also includes a first-stage bent portion so that it can be bent at (l), which is the length of the inner diameter of the fuse. In (b) of FIG. 4 , the towing bar 2 is pulled by the tow unit 5 located at the arrival work area 200 among the work areas at both ends of the landfill section, and the new pipe is fixed at the departure work area 100. It shows a conceptual diagram in which the traction head approaches the pulling device 4 by towing the traction head. 4(c) shows a conceptual diagram in which the traction head enters the fuse drawing part 30 of the drawing device 4 by being attracted by the traction force of the draw rod. When the fuse approaches the fuse draw part, the diameter of the fuse draw narrows and the fuse extends. At this time, the diameter of the fuse draw part becomes (t), and the band-shaped extension located inside the fuse bends in the second stage at the point where the outer diameter of the fuse bends to t. It is broken through wealth. Unlike the location of the first-stage bent part, strong resistance is received at the point where the draw-out bend occurs, so rupture may occur at the fixed part of the fuse and traction head. By doing so, it is possible to maintain a stationary state under descent. 4(d) is a conceptual diagram illustrating a state in which the fuse passes through the drawing unit along the traction head and passes through the inside of the drawing device. The passage of the fuse inside the drawing device is slightly longer than the diameter (t) of the drawing part (t+α) so that the fuse can easily pass through the inside of the drawing device.

Although the exemplary embodiments of the present application have been described in detail above, the scope of the present application is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present application defined in the following claims are also within the scope of the present application. that belongs to

All technical terms used in the present invention, unless defined otherwise, are used with the same meaning as commonly understood by one of ordinary skill in the art related to the present invention. The contents of all publications incorporated herein by reference are incorporated herein by reference.

1. Towing head
2. Drawbar
3. fuse
4. Pulling device
5. Traction
7. Old building
8, 25. Screw connection
10. Main body
11. Fastener
12, 22. Multiple fastening holes
14, 24. Thread
15. Fixing nut
20. Band extension
30. Drawing part
33. 1st stage bend
100. Start tool
200. Arrival work area
333. 2nd stage bend

Claims (5)

It is a traction head for the insertion closure method (CFL) that is fixed with the new pipe for the rehabilitation of water and sewage pipes.
The towing head is:
A conical main body having a fastening hole passing through the center of the spire to fasten the drawbar, having a plurality of fastening holes having threads formed on the side wall, and having a bottom diameter smaller than the inner diameter of the fuse; and
A plurality of strip-shaped extensions extending from the bottom of the conical body portion along the sidewall direction, having a plurality of fastening holes having threads formed on the outer surface thereof, and arranged at intervals from each other,
The plurality of strip-shaped extensions have a bent portion so that they can be bent and inserted into the fuse, or are formed of a material having elasticity,
The band-shaped extension part includes a first-end bent part and a second-end bent part so that it can be combined with the fuse in a bent state in a direction parallel to the inner diameter of the fuse, and the first-end bent part has an inner diameter of the fuse and the second-stage bent portion is not bent until it passes through the drawing unit of the drawing device, and then is bent together as the tube diameter of the new pipe decreases while passing through the drawing device to contact the inner diameter of the new pipe in a swaged state,
A traction head for CFL that is fixed with a fuse for water and sewage pipe rehabilitation.
delete According to claim 1,
The conical body portion and the strip-shaped extension portion are separable from each other,
The belt-shaped extension is screwed to the conical body,
A traction head for CFL that is fixed with a fuse for water and sewage pipe rehabilitation.
According to claim 1,
The fastening hole of the main body further comprises a fixing nut for fastening the towbar exposed through the passage of the towbar under the lower surface of the main body,
A traction head for CFL that is fixed with a fuse for water and sewage pipe rehabilitation.
According to claim 1,
The fastening hole of the body part has a nut-shaped thread coupled to the bolt-shaped drawbar thread to fasten the threaded bolt-shaped drawbar thread therein,
A traction head for CFL that is fixed with a fuse for water and sewage pipe rehabilitation.

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