Belt-shaped member for rehabilitating a pipeline and apparatus for manufacturing the same

Abstract

To prevent the crushing deformation of the reinforcing strip material of a strip member or the shaving of a coating layer at the time of the production of a regeneration pipe.SOLUTION: The belt-like member 10 for conduit regeneration includes a synthetic resin-made belt body 11 including a flat main belt part 12 and an outer peripheral projection part 15, and a reinforcing belt material 20 including a metallic reinforcing belt body 20a and a resin-coated layer 20b. An outer peripheral protrusion 15 is arranged inside a hollow body 21 of a reinforcing band material 20, and an end part on the outer peripheral side of the outer peripheral protrusion 15 is brought into contact with or brought close to a top plate part 24 of the hollow body 21.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to a belt-shaped member for pipeline rehabilitation, which serves as a rehabilitation pipe that is lined on the inner periphery of an existing pipe, such as an aging sewer pipe, and a manufacturing device for the same, and in particular to a belt-shaped member in which the belt body made of synthetic resin is reinforced with a reinforcing belt material such as steel, and a manufacturing device for the same. [Background technology]

[0002] It is known that in order to rehabilitate existing pipes such as aged sewer pipes, the inner periphery of the pipe is lined with a rehabilitation pipe. A known rehabilitation pipe has a spiral pipe structure in which a belt-shaped pipe for pipe rehabilitation is wound in a spiral shape (see Patent Document 1, etc.).

[0003] The belt-shaped member for pipe rehabilitation in Patent Document 1 includes a belt body made of synthetic resin and a reinforcing belt material that reinforces the belt body. Two (multiple) T-shaped outer peripheral ribs (outer peripheral convex portions) are provided in the widthwise middle portion of the belt body so as to protrude outward. A pair of pipe-making joints with complementary concave-convex cross sections are provided on both widthwise edges of the belt body. The helically wound belt-shaped member is manufactured into a helical tube-shaped rehabilitation pipe by fitting together the joints that face each other at different circumferences. A reinforcing belt material is provided on the outer peripheral side of the belt body of the belt-shaped member. The reinforcing belt material includes a steel reinforcing belt body and a coating layer. The reinforcing belt body includes a hollow body portion with a C-shaped or U-shaped cross section that has a top plate portion and a pair of side plates and protrudes outward from the belt body, and a pair of arm plates that extend on both widthwise sides from each side plate and are engaged with the engaging portions of the belt body. The entire surface of the reinforcing band body is covered with a polyethylene resin coating layer. The outer circumferential rib of the band body is located inside the hollow body of the reinforcing band material. The outer circumferential rib is lower than the hollow body, and the top plate is located away from the outer circumferential side of the outer circumferential rib.

[0004] The pipe-making device for producing a rehabilitated pipe from a strip-shaped member includes an outer roller and an inner roller connected to a drive motor. The outer roller is inserted into an outer peripheral groove between the joint of the strip-shaped member and the hollow body and pressed against the arm plate portion. The inner roller is pressed against the inner peripheral side surface of the strip body. The strip-shaped member is clamped between the outer roller and inner roller to proceed with pipe production. The strip-shaped member of Patent Document 1 is suitable for constructing a rehabilitating pipe with a self-supporting pipe structure in which the rehabilitating pipe alone provides the required strength. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2022-034908 Summary of the Invention [Problem to be solved by the invention]

[0006] During the rehabilitating process, the outer rollers of the pipe-making device are pressed tightly against the narrow arm sections of the reinforcing band material as they rotate, potentially scraping away the coating layer on the surface of the arm sections. This can lead to problems such as the device slipping and stopping production if a large resistance force exceeds the driving force of the device, for example, when the device hits an uneven surface or step on the inner circumference of the existing pipe. Furthermore, scraping away the coating layer can expose the steel reinforcing band itself, potentially causing it to rust.

[0007] One solution is to press the outer roller against the wide top plate of the reinforcing strip. However, in this case, the pressing load of the outer roller may cause plastic deformation (hereinafter referred to as "crushing deformation") that crushes the top plate and ultimately the reinforcing strip. This may reduce the rigidity of the resulting rehabilitated pipe, which may not meet the requirements for a self-supporting pipe. In view of the above circumstances, the present invention aims to prevent the reinforcing strip of a band-shaped member from being crushed and deformed, and to prevent the coating layer of the reinforcing strip of a band-shaped member from being scraped off, when manufacturing a rehabilitated pipe. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a belt-shaped member for pipeline rehabilitation that serves as a rehabilitation pipe that is lined on the inner periphery of an existing pipe, a band body made of synthetic resin including a flat main band portion and an outer peripheral convex portion rising from the main band portion toward the outer periphery; a reinforcing band material including a reinforcing band main body made of metal and a coating layer made of resin covering the surface of the reinforcing band main body; the reinforcing band material has a hollow barrel portion protruding from the main band portion toward the outer periphery, and a top plate portion is formed at the outer periphery end of the hollow barrel portion so as to face the main band portion in parallel, The outer peripheral convex portion is disposed inside the hollow body portion, and the outer peripheral end of the outer peripheral convex portion abuts against the top plate portion or is close enough to be able to abut against it.

[0009] When the strip-shaped member is clamped between the outer and inner rollers of the pipe-making machine to produce a pipe, the pressure from the outer roller is borne by the outer peripheral convex portion via the top plate. This prevents the top plate and, ultimately, the reinforcing strip from being crushed and deformed. This allows the rigidity of the produced rehabilitated pipe to be maintained at a high level, ensuring that the rehabilitated pipe meets the required strength for a self-supporting pipe, for example. The outer roller can be made to contact most or the entire width of the wide top plate portion of the reinforcing strip. This allows the pressing load to be distributed across the width of the top plate portion, suppressing or preventing the coating layer from being scraped at the contact points. This prevents problems such as the pipe making device slipping and stopping pipe making. Furthermore, the driving force of the pipe making device can be reliably applied to the strip-shaped member, allowing for smooth pipe making during rehabilitation. Furthermore, the reinforcing strip itself can be prevented from being exposed and rusting.

[0010] Preferably, the gap between the top plate portion and the outer peripheral convex portion is 0 mm or more and 1 mm or less. As a result, even if there is a gap between the top plate and the outer peripheral convex portion, even a slight pressure on the top plate due to the pressing load of the outer roller will cause the top plate to butt against the outer peripheral convex portion, and the outer peripheral convex portion will be able to bear the pressing load. Therefore, it is possible to reliably prevent the top plate and, in turn, the reinforcing strip from being crushed and deformed.

[0011] Preferably, a plate-shaped top plate portion perpendicular to the rising direction is formed at the outer peripheral end of the outer peripheral convex portion, and the top plate portion is in contact with or in close proximity to the top plate portion in parallel thereto so as to be able to contact it. As a result, when the outer roller of the pipe making device is pressed against the top plate portion, the top plate portion comes into surface contact with the top plate portion, allowing the pressing load of the outer roller to be distributed and received, thereby reliably preventing deformation of the top plate portion.

[0012] The present invention also provides a pipe manufacturing apparatus for manufacturing a belt-shaped member for pipeline rehabilitation, which comprises a belt body made of synthetic resin including a flat main belt portion and an outer peripheral convex portion, and a reinforcing belt material coated with a resin coating layer on the outer peripheral side thereof, and the outer peripheral top plate portion of the reinforcing belt material is supported by the outer peripheral convex portion, into a spiral-shaped rehabilitation pipe that follows the inner circumference of an existing pipe, an inner roller in contact with the inner peripheral side surface of the main band portion; an outer roller that sandwiches the belt-shaped member between itself and the inner roller; a drive motor connected to the outer roller so as to be capable of transmitting torque thereto, thereby inputting a driving force for the pipe manufacturing to the outer roller; The outer roller has an outer roller portion with an axial length that spans most or the entire width of the top plate portion, and the outer roller portion contacts the outer peripheral side surface of the top plate portion. According to this pipe making device, the pressing load applied by the outer roller to the strip-shaped member can be widely distributed across the width of the top plate portion of the reinforcing strip material, thereby suppressing or preventing abrasion of the resin coating layer of the top plate portion.

[0013] Preferably, the diameter of the outer roller portion is smaller than the axial length. This allows the outer roller to have a small diameter, making the pipe making device more compact. [Effects of the Invention]

[0014] According to the present invention, when manufacturing a rehabilitating pipe, it is possible to prevent the reinforcing strip material of the strip-shaped member from being crushed and deformed, and to prevent the coating layer from being scraped off. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a cross-sectional view of a belt-shaped member according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a side cross-sectional view showing an existing sewer pipe being rehabilitated by lining with a rehabilitation pipe made of the strip-shaped member. [Figure 3] 3 is a front cross-sectional view taken along line III-III in FIG. [Figure 4(a)] FIG. 4(a) is an enlarged cross-sectional view of the circle Va in FIG. [Figure 4(b)] FIG. 4(b) is a front cross-sectional view taken along line IVb-IVb in FIG. [Figure 5] FIG. 5 is an enlarged cross-sectional view of the circle V in FIG. [Figure 6] 6 is a cross-sectional view of the drive unit of the pipe making apparatus taken along line VI-VI in FIG. [Figure 7] FIG. 7 is a cross-sectional view of a belt-shaped member according to a second embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view of a belt-shaped member according to a third embodiment of the present invention. [Figure 9] FIG. 9 is a cross-sectional view of a belt-shaped member according to a fourth embodiment of the present invention. [Figure 10] FIG. 10 is a cross-sectional view of a belt-shaped member according to a fifth embodiment of the present invention. [Figure 11] FIG. 11 is a cross-sectional view of a belt-shaped member according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. <First embodiment (FIGS. 1 to 6)> Fig. 1 shows a belt-shaped member 10 for pipe rehabilitation according to a first embodiment of the present invention. As shown in Fig. 2, the belt-shaped member 10 is used to rehabilitate an existing pipe 1, such as an aged sewer pipe. The existing pipe 1 is not limited to a sewer pipe, but may also be a water supply pipe, an agricultural water pipe, a hydroelectric power generation water pipe, a gas pipe, or any other existing buried pipe, or may be a tunnel.

[0017] As shown in Figure 3, a pipe rehabilitation strip 10 is wound spirally around the inner periphery of an existing pipe 1 to form a spiral rehabilitation pipe 3. The rehabilitation pipe 3 is lined around the inner periphery of the existing pipe 1, thereby rehabilitating the existing pipe 1. Preferably, the rehabilitation pipe 3 is a self-supporting pipe that alone provides the required strength, and no backfill material such as mortar is filled between the inner periphery of the existing pipe 1 and the outer periphery of the rehabilitation pipe 3 to integrate the existing pipe 1 and the rehabilitation pipe 3 in terms of strength.

[0018] As shown in FIG. 1, a belt-shaped member 10 for pipe rehabilitation has a constant cross section and extends elongatedly in a direction perpendicular to the plane of the paper in FIG. 1. The belt-shaped member 10 comprises a belt main body 11 and a reinforcing belt material 20. The belt main body 11 is made of a synthetic resin such as polyvinyl chloride, polyethylene, or polypropylene. The belt main body 11 has a main belt portion 12, joint portions 13 and 14 for pipe production, and two (or multiple) outer peripheral convex portions 15 (outer peripheral ribs). The main belt portion 12 is formed in a flat belt shape. The inner peripheral side surface 12a of the main belt portion 12 is smooth. Joint portions 13 and 14 are provided on both edges of the main band portion 12 in the belt width direction (left and right direction in FIG. 1). These joint portions 13 and 14 are formed in uneven cross-sectional shapes that are complementary to each other.

[0019] As shown in FIG. 4(a), in a rehabilitating pipe 3 made of a spiral pipe, joints 13 and 14 that face each other on different circumferences of a spirally wound strip-shaped member 10 are fitted together in a concave-convex manner.

[0020] As shown in FIG. 1, two outer peripheral protrusions 15 are integrally formed in the middle of the main band portion 12 in the band width direction. These outer peripheral protrusions 15 are spaced apart from each other in the band width direction. Each outer peripheral protrusion 15 includes a leg portion 16 and a top plate portion 17 and is formed with a T-shaped cross section. The leg portion 16 rises from the main band portion 12 toward the outer periphery (upper side in FIG. 1). The top plate portion 17 is provided at the end portion on the outer periphery side of the leg portion 16 (upper end portion in FIG. 1). The top plate portion 17 is perpendicular to the leg portion 16, and is therefore perpendicular to the rising direction of the outer peripheral protrusions 15, and is formed in a plate shape parallel to the main band portion 12.

[0021] As shown in Fig. 1, a reinforcing band 20 is provided on the outer peripheral side (upper side in Fig. 1) of the band main body 11. As shown in Figs. 1 and 5, the reinforcing band 20 includes a reinforcing band main body 20a and a resin coating layer 20b. The reinforcing member 20 ensures that the rehabilitating pipe 3 has the required strength as a self-supporting pipe.

[0022] 5, the reinforcing band main body 20a is made of metal such as steel or iron. The entire surface of the reinforcing band main body 20a is covered with a coating layer 20b. The material of the coating layer 20b is a resin such as polyethylene (PE).

[0023] As shown in FIG. 1, the reinforcing band material 20 is formed with a hollow body portion 21 and a pair of arm plate portions 22. The hollow body portion 21 protrudes from the main band portion 12 toward the outer periphery (upper side in FIG. 1) and opens toward the inner periphery (lower side in FIG. 1). Specifically, the hollow body portion 21 includes a pair of side plate portions 23 and a top plate portion 24 that face each other in the band width direction (left-right direction in FIG. 1), and is formed with a C-shaped cross section. Each side plate portion 23 rises from the main band portion 12 toward the outer periphery. The top plate portion 24 (outer periphery plate portion) spans between the outer periphery ends (upper ends in FIG. 1) of the pair of side plate portions 23. Each side plate portion 23 and the top plate portion 24 are connected at approximately right angles. The main band portion 12 and the top plate portion 24 face each other in parallel.

[0024] A pair of arm plate portions 22 are provided on both sides in the band width direction of the hollow body portion 21. The arm plate portions 22 extend outward in the band width direction from the inner peripheral end portion (the lower end portion in FIG. 1) of the side plate portion 23 and are warped obliquely toward the outer periphery. The tip edges of the arm plate portions 22 are engaged with engagement portions 13f, 14f of the joint portions 13, 14.

[0025] As shown in FIG. 1, the opening of the hollow barrel 21 toward the inner periphery is blocked by the main band portion 12. The hollow barrel 21 straddles the outer peripheral convex portion 15. The outer peripheral convex portion 15 is disposed inside the hollow barrel 21. The top plate portion 17 at the outer peripheral end of the outer peripheral convex portion 15 abuts against or is close enough to abut against the inner peripheral side surface 24b of the top plate portion 24. As shown in FIG. 5, the gap d between the top plate portion 24 and the top plate portion 17, and therefore the outer peripheral convex portion 15, is preferably d = 0 mm or more and 1 mm or less. The top plate portion 24 is supported from the inner periphery (the lower side in FIG. 1) by the outer peripheral convex portion 15.

[0026] Figures 2 and 3 show how a self-propelled pipe making device 30 produces a rehabilitating pipe 3 from a strip-shaped member 10. The pipe making device 30 comprises an apparatus frame 31 and a drive unit 40. The apparatus frame 31 is disposed at the front end 3f in the extension direction of the rehabilitating pipe 3 during pipe making. As shown in Figure 3, a pipe end guide 33 is provided at the bottom of the apparatus frame 31. As shown in Figure 4(b), the pipe end guide 33 is engaged with the extension front end 3f of the rehabilitating pipe 3 so as to be slidable in the circumferential direction (winding direction).

[0027] As shown in Fig. 3, a drive unit 40 is provided on the device frame 31. As shown in Fig. 6, the drive unit 40 includes an inner roller 41, an outer roller 42, and a drive motor 43. The inner roller 41 and the outer roller 42 are arranged so as to face each other in parallel, with their axes directed in the width direction of the device frame 31 (the left-right direction in Fig. 6).

[0028] The inner roller 41 is formed in a cylindrical shape with a smooth outer peripheral surface. The axial length of the inner roller 41 is approximately equal to or greater than the width dimension of the belt-shaped member 10.

[0029] As shown in Fig. 6, the outer roller 42 is disposed on the bottom side (lower side in Fig. 6) of the inner roller 41 in the device frame 31. The outer roller 42 includes an outer roller portion 42a and a shaft 42c. The outer roller portion 42a is provided at the middle portion in the axial direction of the shaft 42c. The outer roller portion 42a has a diameter D 42a is the axial length L 42a It is formed into a smaller cylindrical shape (D 42a <L 42a The shaft length L of the outer roller portion 42a 42a The outer roller portion 42a has a size that covers most or the entire width of the top plate portion 24. 42a is the width W of the top plate 24 24 Approximately 0.8 times or more (L 42a ≧0.8×W 24 ) is preferable, and about 1 time or more (L 42a ≧W 24 ) is more preferred.

[0030] Preferably, a pattern groove 42b made of a flat knurling is formed on the outer peripheral surface of the outer roller portion 42a. The pattern groove 42b is not limited to a flat knurling, but may be an oblique knurling, a cross knurling, or the like.

[0031] A drive motor 43 is connected to the shaft 42c of the outer roller 42 so as to be able to transmit torque via a torque transmission mechanism 44. The drive motor 43 inputs a driving force for pipe manufacturing to the outer roller.

[0032] The pipe making device 30 makes a rehabilitating pipe 3 (helical pipe) as follows. The unmade pipe band portion 19 of the band-shaped member 10, which is connected to the stretching front end portion 3f, is introduced between the inner roller 41 and the outer roller 42 of the pipe making device 30 while being spirally wound. The inner roller 41 and the outer roller 42 clamp the band portion 19. The inner roller 41 contacts the inner peripheral side surface 12a of the main band portion 12, and the outer roller portion 42a contacts the outer peripheral side surface 24a of the top plate portion 24.

[0033] Furthermore, the outer roller 42 is driven to rotate by the drive motor 43. As a result, the band portion 19 is pushed obliquely from between the rollers 41, 42 toward the stretching front end 3f, and the first joint portion 13 of the stretching front end 3f and the second joint portion 14 of the band portion 19 are engaged with each other at the engagement point 3p on the stretching front end 3f. As a result, the production of the rehabilitation pipe 3 progresses. At the same time, the pipe producing device 30 is propelled (self-propelled) along the winding direction of the stretching front end 3f, using the pushing force of the band portion 19 as a propulsion reaction force.

[0034] During pipe making, the inner roller 41 and the outer roller 42 clamp the band portion 19, causing the outer roller portion 42a to be pressed firmly against the top plate portion 24. At this time, the top plate portion 17 of the outer peripheral convex portion 15 abuts or is close to the inner peripheral side surface 24b of the top plate portion 24, so the pressing load of the outer roller 42 is transmitted to the outer peripheral convex portion 15 via the top plate portion 24. This allows the outer peripheral convex portion 15 to bear the pressing load of the outer roller 42. The leg portions 16 of the outer peripheral convex portion 15 have high strength in the direction along the pressing load, so they can reliably support the top plate portion 24 against the pressing load. In addition, the top plate portion 17 of the outer peripheral convex portion 15 can support the top plate portion 24 with its surface. As a result, crushing deformation of the top plate portion 24 and, ultimately, the reinforcing band material 20 can be prevented. Even if there is a gap between the top plate portion 24 and the top plate portion 17, the size of the gap is between 0 mm and 1 mm, so that even if the top plate portion 24 is pressed slightly by the pressing load of the outer roller 42, the top plate portion 24 will abut against the top plate portion 17 and the outer peripheral convex portion 15 will receive the pressing load. Therefore, crushing deformation (plastic deformation) of the top plate portion 24 and, ultimately, the reinforcing strip material 20 can be reliably prevented. This allows the rigidity of the manufactured rehabilitating pipe 3 to be maintained at a high level, ensuring that the rehabilitating pipe 3 meets the required strength as a self-supporting pipe.

[0035] Furthermore, the outer roller portion 42a is in contact with the top plate portion 24 over most or the entire widthwise area thereof. Therefore, the pressing load from the outer roller 42 can be dispersed in the widthwise direction of the top plate portion 24, and scraping of the coating layer 20b at the contact points of the top plate portion 24 with the outer roller 42 can be suppressed or prevented. Even if the clamping force by the inner roller 41 and the outer roller 42 is increased, the dispersion of the pressing load can prevent local scraping of the coating layer 30. Therefore, it is possible to prevent troubles such as the pipe making device 30 spinning (slipping) and stopping pipe making. In particular, even if the pipe making device 30 encounters large resistance due to hitting unevenness or steps on the inner circumference of the existing pipe 1, it is possible to prevent the pipe making device 30 from slipping, and pipe making can be reliably prevented from stopping. Furthermore, the prevention of crushing deformation and the prevention of idling combine to ensure that the driving force of the drive unit 40 is applied to the band portion 19, and the rehabilitating pipe 3 can be produced smoothly. Furthermore, in the manufactured rehabilitating pipe 3, the reinforcing band main body 20a can be prevented from being exposed and rusting.

[0036] Next, another embodiment of the present invention will be described. In the following embodiments, the same components as those already described will be denoted by the same reference numerals in the drawings and the description thereof will be omitted. <Second embodiment (FIG. 7)> The form of the outer peripheral protrusion that supports the top plate is not limited to that in the first embodiment (FIG. 1). 7, in the belt-shaped member 10B according to the second embodiment, one outer peripheral protrusion 15 is provided in the central portion in the belt width direction of the belt main body 11. The top plate portion 17 of the outer peripheral protrusion 15 abuts or is close enough to abut against the central portion of the top plate portion 24.

[0037] <Third embodiment (FIG. 8)> 8, the belt-shaped member 10C according to the third embodiment has three outer peripheral protrusions 15. The legs 16 of the three outer peripheral protrusions 15 are spaced apart from one another in the belt width direction, preferably at equal intervals.

[0038] <Fourth embodiment (FIG. 9)> 9, in a belt-shaped member 10D according to the fourth embodiment, the legs 16 of the two (plural) outer peripheral protrusions 15 of the belt body 11 are arranged closer to each other than in the first embodiment (FIG. 1). The top plate portions 17 of these outer peripheral protrusions 15 are integrally connected to each other.

[0039] <Fifth embodiment (FIG. 10)> A belt-shaped member 10E according to a fifth embodiment shown in Fig. 10 is a modified version of the fourth embodiment (Fig. 8), and includes a diagonal brace member 16b on each leg 16. The diagonal brace member 16b extends obliquely to connect the middle of the leg 16 with the main band 12. The diagonal brace members 16b of the two legs 16 are arranged symmetrically on the opposite sides of each other.

[0040] Sixth embodiment (FIG. 11) As shown in FIG. 11, in the belt-shaped member 10F according to the sixth embodiment, the outer peripheral protrusion 18 is formed with a rectangular cross section. More specifically, the outer peripheral protrusion 18 has a pair of legs 18b and a top plate 18a. The pair of legs 18b are spaced apart in the belt width direction (the left-right direction in FIG. 10) and stand outward from the main belt portion 12 toward the outer periphery. Each leg 18b extends along the side plate 23. The top plate 18a spans between the outer peripheral ends (upper ends in FIG. 10) of the legs 18b. The top plate 18a abuts against the top plate 24 or is close enough to be abutted against it.

[0041] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, a backfilling material may be filled between the existing pipe 1 and the rehabilitation pipe 3. The existing pipe 1 and the rehabilitation pipe 3 may be structurally integrated via the backfilling material to form a composite pipe. The pipe manufacturing device is not limited to a self-propelled type, but may be a push-type that pushes out the manufactured rehabilitated pipe 3, or a towing type that pulls the tip of the manufactured rehabilitated pipe 3. The rehabilitating pipe is not limited to a spiral pipe. A plurality of strip-shaped members each extending toward the pipe axis of the rehabilitating pipe may be arranged in the circumferential direction of the pipe, with the opposing edges of adjacent strip-shaped members joined together. [Industrial Applicability]

[0042] The present invention can be applied to, for example, a technology for rehabilitating aged existing sewer pipes. [Explanation of symbols]

[0043] 1 Existing pipes 3 Rehabilitation pipe 10 Pipe rehabilitation strip 10B~10F Pipeline rehabilitation belt-shaped members 11 Obi body 12 Main belt section 12a Inner circumferential surface 13 1st joint (joint) 14 Second joint (joint) 15 Outer periphery convex part 16 Legs 17 Top plate part 18 Outer periphery convex part 18a Top plate part 18b Legs 19 Obi part 20 Reinforcement strip 20a Reinforcement belt body 20b Covering layer 21 Hollow body 22 Arm plate part 23 Side plate part 24 Top plate (outer peripheral plate) 24a Outer side 24b Inner periphery side 30 Pipe making equipment 31 Device frame 33 Pipe end guide 40 Drive unit 41 Inner roller 42 outer roller 42a Outer roller part 42b pattern groove 43 Drive motor 44 Torque transmission mechanism

Claims

1. A belt-shaped member for pipeline rehabilitation that becomes a rehabilitation pipe that is lined on the inner periphery of an existing pipe, a band body made of synthetic resin including a flat main band portion and an outer peripheral convex portion rising from the main band portion toward the outer periphery; a reinforcing band material including a reinforcing band main body made of metal and a coating layer made of resin covering the surface of the reinforcing band main body; the reinforcing band material has a hollow barrel portion protruding from the main band portion toward the outer periphery, and a top plate portion is formed at the outer periphery end of the hollow barrel portion so as to face the main band portion in parallel, A belt-shaped member characterized in that the outer peripheral convex portion is arranged inside the hollow body portion, and the outer peripheral end of the outer peripheral convex portion abuts against or is close enough to abut against the top plate portion.

2. The belt-shaped member according to claim 1 , wherein a gap between the top plate portion and the outer peripheral convex portion is 0 mm or more and 1 mm or less.

3. A belt-shaped member as described in claim 1, wherein a plate-shaped top plate portion perpendicular to the rising direction is formed at the outer end of the outer peripheral convex portion, and the top plate portion abuts or is close enough to be abutted parallel to the top plate portion.

4. A pipe manufacturing device for manufacturing a belt-shaped member for pipeline rehabilitation, which comprises a belt body made of synthetic resin including a flat main belt portion and an outer peripheral convex portion, and a reinforcing belt material coated with a resin coating layer on the outer peripheral side thereof, and a top plate portion on the outer peripheral side of the reinforcing belt material supported by the outer peripheral convex portion, into a spiral-shaped rehabilitation pipe that follows the inner circumference of an existing pipe, an inner roller in contact with the inner peripheral side surface of the main band portion; an outer roller that sandwiches the belt-shaped member between itself and the inner roller; a drive motor connected to the outer roller so as to be capable of transmitting torque thereto, thereby inputting a driving force for the pipe manufacturing to the outer roller; wherein the outer roller has an outer roller portion with an axial length that extends across most or the entire width of the top plate portion, and the outer roller portion contacts the outer peripheral side surface of the top plate portion.

5. 5. A pipe making apparatus according to claim 4, wherein the diameter of the outer roller portion is smaller than the axial length.

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