JPH05169539A - Lining device for inner peripheral surface of tube - Google Patents

Abstract

PURPOSE:To provide an inner peripheral surface lining device for a tube by preventing a band from becoming twisted and thereby adhering a spiral tube tightly to the inner peripheral surface of a buried tube when the spiral tube is manufactured in the buried tube using a band, and the inner surface of the buried tube is to be lined with the manufactured spiral tube. CONSTITUTION:A band 10 wound around a freely rotating reel 41 is wound around each tube manufacturing roller 53a. Further, each tube manufacturing roller 53a moves around along the inner peripheral surface of the buried tube 20, following the run of a traveling part 30. Consequently, the band 10 is pulled out of the reel 41 to be wound spirally as a spiral tube. The spiral tube is pressed by a pressing roller 63 which rolls in contact with the inner peripheral surface, to adhere to the inner peripheral surface of the buried tube 20 tightly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for lining the inner peripheral surface of a conduit such as a buried pipe buried in the ground or a shield for covering the inner peripheral surface of a tunnel.

[0002]

2. Description of the Related Art A device for lining the inner peripheral surface of a conduit, such as a buried pipe buried in the ground, is disclosed in JP-A-62-169.
No. 621 is disclosed. In the device disclosed in this publication, a band-shaped synthetic resin sheet is sequentially pressed against the resin while spraying an anticorrosion resin on the inner peripheral surface of the pipe, and the inner peripheral surface of the pipe is formed by the synthetic resin sheet. Lined.

Further, Japanese Utility Model Publication No. 45-23344 discloses a device for lining the inner surface of a conduit by pressing a soft synthetic resin sheet onto the inner peripheral surface of the conduit with a roller.

Further, in JP-A-62-151220, twisting of a synthetic resin strip is prevented by feeding a synthetic resin strip from a coil that is rotatably supported in a duct. Meanwhile, there is disclosed a configuration in which a spiral pipe is wound around a spiral lacquer to form a spiral pipe, and a pipe line is lined by the manufactured spiral pipe.

[0005]

In the apparatus disclosed in Japanese Patent Laid-Open No. 62-169621, when the inner surface of the pipeline is corroded, a resin is sprayed onto the inner surface of the pipeline to seal the sheet with the inner circumference of the pipeline. Even when pressed against the surface, a space is generated between the synthetic resin sheet and the inner peripheral surface of the conduit because the inner peripheral surface of the conduit is uneven due to corrosion. When water enters this space, the synthetic resin sheet may rise inward due to water pressure.
When the lining sheet rises inward in the pipeline as described above, the resistance of the fluid flowing in the pipeline increases, and the fluid cannot smoothly flow.

Further, in the apparatus disclosed in Japanese Utility Model Publication No. 45-23344, when the synthetic resin sheet is wound in the pipe,
When the synthetic resin sheet makes one turn along the inner peripheral surface of the conduit, the synthetic resin sheet is twisted, so that the lining work on the inner peripheral surface of the conduit cannot be smoothly and continuously performed.

Further, in the device disclosed in Japanese Patent Laid-Open No. 62-151220, a belt-like member is formed from the outer peripheral surface of the spiral tube formed so that the side edges of the belt-like member made of synthetic resin are engaged with each other. Since the body is pressed by the rollers, the manufactured spiral tube cannot be adhered to the inner peripheral surface of the conduit. Further, when the strip-shaped body makes one round along the inner peripheral surface of the conduit, the coil is rotated once to prevent the strip-shaped body from being twisted.
However, when producing a strip at a constant speed,
Since the diameter of the coil is gradually reduced, the rotational speed of the coil is sequentially increased. Therefore, the belt-shaped body may be twisted by a plurality of rotations of the coil of the belt-shaped body during one rotation along the peripheral surface of the spiral tube.

The present invention solves such a problem, and an object of the present invention is to provide a pipe inner circumference capable of smoothly lining the inner peripheral surface of a long pipe in a state of being in close contact with the pipe inner peripheral surface. It is to provide a surface lining device.

[0009]

A lining device for an inner peripheral surface of a pipe according to the present invention comprises a belt-like body spirally wound in a pipe,
A pipeline inner peripheral surface lining device for manufacturing a spiral tube by engaging side edges of adjacent strips and lining the pipeline inner peripheral surface with the spiral tube, A traveling part that can travel in the axial direction, a rotary drive shaft that is connected to the traveling part and is rotationally driven along the axial direction of the conduit, and the band-shaped body can be freely rotated by being wound. And a feeding portion having a rotating body provided in such a manner that the rotation driving shaft is coupled to the rotation driving shaft so as to be circulated along the inner peripheral surface of the pipe, and the rotation of the feeding portion. A pipe-making unit having a plurality of rotatable pipe-making rollers, each of which is capable of winding the belt-shaped body wound around the body and rolling around the belt-shaped body. The spiral tube formed by a roller is rolled on the inner peripheral surface of the spiral tube to form a conduit. It will be provided and the pressing part, the having a pressing roller which is connected to a rotary drive shaft so as to be pressed against the circumferential surface, the object is achieved.

[0010]

In the lining device for the inner peripheral surface of the pipe according to the present invention, the pipe-making portion is rotated by rotationally driving the rotary drive shaft connected to the running portion, and the pipe-making rollers of the pipe-making portion are It moves around along the inner surface of the pipe. Each pipe-making roller draws out the strip-shaped body that is delivered from the delivery roller of the delivery unit, and spirally winds the strip-shaped body along the inner peripheral surface of the pipe, and adjacent side edges of the spirally-wound strip-shaped body. To form a spiral tube. Since the rotating body of the feeding portion freely rotates, the spirally wound belt-shaped body is fed from the rotating body without being twisted. The formed spiral tube is sequentially pressed on the inner peripheral surface by the pressing roller in the pressing portion, and is brought into close contact with the inner peripheral surface of the conduit.

[0011]

EXAMPLES Examples of the present invention will be described below. The pipe inner surface lining device of the present invention is used, for example, as shown in FIG. 1, to line a synthetic resin strip 10 on the inner surface of a buried pipe 20 buried in the ground. It
The lining device for the inner peripheral surface of the pipeline of the present invention is a traveling portion 30 that travels in the buried pipe 20 in the axial direction and a feeding portion for sequentially feeding the strip-shaped body 10 wound in a coil shape without twisting. 40
And a pipe-making section (50) in which the strip-shaped body (10) is a spiral tube lining the inner peripheral surface of the buried pipe (20), and a pressing section (60) for pressing the spiral tube so as to be in close contact with the pipe inner peripheral surface. ..

The running portion 30 has a cylindrical main body portion 31 arranged at the axial center portion of the buried pipe 20, and the main body portion 31 outside the main body portion 31.
Has a trolley portion 33 supported by the main body portion 31 with an appropriate interval. Each carriage 33 has two pairs of wheels 34.
Are provided at intervals in the axial direction of the buried pipe 20,
Each wheel 34 rolls on the inner peripheral surface of the buried pipe 22. A pair of air springs 32, which are provided apart from each other in the axial direction of the main body 31, are provided between each carriage 33 and the main body 31.
32 are interposed, and each coil spring 32 is
31 is urged away from the main body 31. Therefore,
Since the wheels 34 are pressed against the inner peripheral surface of the buried pipe 20 by the expansion and contraction of the air spring 32, the running portion 30 can axially move the buried pipe 20 in the curved direction or the stepped portion of the buried pipe 20 without any trouble. Can drive.

A rotary drive shaft 35 is rotatably disposed at the axial center of the main body 31 so as to be coaxial with the main body 31.
The rotary drive shaft 35 extends outwardly from one end of the main body 31. A large-diameter sprocket 36 is fixed to a rotary drive shaft 35 located inside the main body 31. The large-diameter sprocket 36 and a pipe-making motor 37 on the inner peripheral surface of the main body 31.
And a small-diameter sprocket 37a is attached to the pipe-making motor 37. A chain is wound around the large diameter sprocket 36 and the small diameter sprocket 37a. Therefore, the rotational force of the pipe manufacturing motor 37 is transmitted to the rotary drive shaft 35 via the small diameter sprocket 37a, the chain, and the large diameter sprocket 36. A traveling motor 38 for traveling the traveling portion 30 is provided on the inner peripheral surface of the main body portion 31, and the traveling motor 38 is connected to one wheel 34 of one carriage 33. Pipe manufacturing motor 37 and traveling motor 38
The rotation speed and the rotation direction of the are properly adjusted by a control device (not shown).

At one end of the rotary drive shaft 35, the strip 10 is provided.
Each end of the reel 41 of the payout section 40, around which is wound, is rotatably supported by a pair of bearings 43 and 43.
A pair of guide rollers 42 and 42 extending in the axial direction are rotatably provided on the outer peripheral portion of the reel 41 outside the strip-shaped body 10 wound around the reel 41. Each guide roller
42 sandwiches the end portion of the strip 10 wound around the reel 41, and passes between the guide rollers 42 when the strip 10 is sequentially paid out from the reel 40.

The strip 10 wound around the reel 40 is formed in a sectional shape as shown in FIG. The strip 10 is
It is molded from a material such as polyvinyl chloride, polyethylene, polypropylene, polycarbonate, polyester, or a resin obtained by reinforcing these resins with glass fiber. The strip 10 is provided with a number of reinforcing ribs 19 having a T-shaped cross section on the back surface of a strip-shaped substrate 12. On the back surface of one side edge of the substrate 12, a fitting protrusion 13 having a semicircular cross section is provided upright. The other side edge portion of the board 12 is a step-down portion 14 that is stepped down to the back side by the thickness of the board 12 so that the side edge portion of the board 12 provided with the fitting protrusion 13 can be engaged. The stepped-down portion 14 is provided with a fitting groove 15 into which the fitting projection 13 can be fitted with a slight gap.

The band-shaped body 10 as described above is formed by the pipe manufacturing section 50.
Substrate in which the fitting protrusion 13, the reinforcing rib 19, and the fitting groove 15 are provided upright.
It is spirally wound so that the back side of 12 is the outer peripheral side,
The fitting protrusion 13 is fitted into the space in the fitting groove 15 to form a spiral tube that is in close contact with the inner peripheral surface of the embedded pipe 20. At this time, the engaging portion formed at the tip of the step-down portion 14
By engaging the adjacent reinforcing ribs 19 with each other, the side edges of the spirally wound band-shaped body 10 are firmly locked to each other and are held at a predetermined diameter.

The pipe manufacturing section 50 is a feeding section of the rotary drive shaft 35.
A rotary portion 51 is fixed to a portion closer to the tip than 40 so as to rotate integrally with the rotary drive shaft 35.
As shown in FIG. 2, the rotating portion 51 is provided with three radially projecting protrusions 51a at equal intervals in the circumferential direction, and each of the protrusions 51a has, for example, three pneumatic pressures. A cylinder 52 is provided so as to be expandable and contractable in the radial direction of the buried pipe 20. A pipe-making roller 53a around which the strip-shaped body 10 fed from the reel 41 is wound is provided at the tip end portion located outside each pneumatic cylinder 52, and each pipe-making roller 53a is embedded by the rotation of the rotating portion 51. It is adapted to move circularly along the inner peripheral surface of the pipe 20. Each tube making roller 53
In a, each axial direction is set to a predetermined spiral angle so that the strip 10 is wound at a predetermined spiral angle. The spiral angle of each tube-making roller 53a can be easily changed. The strip-shaped body 10 that has been fed from the reel 41 and passed between the guide rollers 42 is guided by the guide tool 54 into one pipe-making roller 53 that is close to each guide roller 42.
At a, a guide tool 54 for guiding the strip 10 to the pipe making roller 53a is provided integrally with the pipe making roller 53a. Band 10 wrapped around each tube-making roller 53a
Are wound in a spiral. Each pipe-making roller 53a is pressed outward by each pneumatic cylinder 52, and the fitting protrusion 13 of the spirally wound strip 10 is fitted in the adjacent fitting concave groove 15. To press. As a result, adjacent side edges of the spirally wound strip 10 are engaged with each other to form a spiral tube.

The rotary drive shaft 35 is inserted through the pipe-making portion 50, and a pressing portion 60 for pressing the strip-shaped body 10 pressed against the inner peripheral surface of the embedded pipe 20 from the inside is provided at the tip thereof. ing. The pressing portion 60 has a support body 61 rotatably attached to the tip of the rotary drive shaft 35. The support body 61 has a single expandable air pressure extending in the radial direction. A cylinder 62 is provided. At the tip of the pneumatic cylinder 62, a pressing roller 63 extending in the width direction of the strip-shaped body 10 is rotated so as to roll while being in pressure contact with the inner peripheral surface of the strip-shaped body 10 that is in close contact with the inner peripheral surface of the buried pipe 20. Supported as possible. The pressing roller 63 rolls in a spiral shape and rolls on the inner peripheral surface of the spiral tube in which adjacent side edges are engaged with each other, so that the spiral tube is in close contact with the inner peripheral surface of the embedded tube 20. Is being held down.

A method of lining the buried pipe 20 by the lining device for the inner peripheral surface of the conduit having the above-described structure will be described. First, as shown in FIG. 4, a shaft 70 is formed at a point where the strip 10 is to be lined, and the pipe inner peripheral surface lining device of the present invention is installed in the shaft 70. Then, the strip-shaped body 10 is wound on the reel 41 in the feeding portion 40 of the pipeline inner surface lining device from the raw fabric drum 71 which is arranged on the vertical shaft 70 and on which the long strip-shaped body 10 is wound. After that, the pneumatic cylinders 52 of the pipe making unit 50 are operated so as to be shortened, and the pipe making rollers 53
a is sufficiently separated from the inner peripheral surface of the buried pipe 20.
Then, each pipe-making roller 53a is adjusted to have a predetermined spiral angle. In such a state, the traveling unit 30 is caused to travel and the pipeline inner surface lining device is moved to the lining start point of the buried pipe 20.

Next, the strip 10 is pulled out from the reel 41 of the feeding section 40 through the guide rollers 42 and 42. The strip-shaped body 10 that has been pulled out passes through the guide tool 54 of the pipe making unit 50 and is introduced between each pipe making roller 53a and the inner peripheral surface of the embedded pipe 20. Then, the tip of the strip 10 is screwed to the inner surface of the buried pipe 20. After that, the pipe-making motor 37 is driven to rotate the rotary drive shaft 35, so that the rotary portion 51 of the pipe-making portion 50 connected to the rotary drive shaft 35 is rotated once to rotate the embedded pipe 20. By the pipe-making roller 53a that moves along the inner peripheral surface, the strip 10 is wound only once,
The rotation of the pipe-making motor 37 is stopped. As a result, the strip-shaped body 10 wound around the embedded pipe 20 by a predetermined spiral angle is screwed at a plurality of positions on the inner peripheral surface of the embedded pipe 20. Then, by rotating the pipe-making motor 37 little by little, each pipe-making device is moved to a position where the adjacent fitting protrusions 13 and fitting grooves 15 of the spirally wound strip 10 are fitted. The roller 53a is aligned. After this, the pneumatic cylinders 52 of the pipe producing section 50 are operated to extend, and the respective pipe producing rollers 53a are moved outward, so that the strip 1
Press 0 from the inside. As a result, the fitting protrusion 13 and the fitting groove 15 that are adjacent to each other in the spirally wound strip 10 are fitted together. At this time, each pneumatic cylinder
The pressing force of 52 is adjusted to an appropriate pressing force so that the fitting projection is fitted in the fitting concave groove 15 and comes into close contact with the inner peripheral surface of the embedded pipe 20.

When the fitting projection 13 and the fitting groove 15 of the strip 10 are fitted in this manner, the pipe-making motor 37 is continuously driven, and the rotating portion 51 of the pipe-making portion 50 is driven. Is driven to rotate in the direction indicated by arrow A in FIG. As a result, each pipe-making roller 53a orbits along the inner peripheral surface of the buried pipe 20,
The strip-shaped body 10 is sequentially drawn out from the reel 41 of the feeding section 40 by each tube-making roller 53a, and wound in a spiral shape. At this time, the strip-shaped body 10 is pulled out in accordance with the rotation of the pipe manufacturing section 50, so that the reel 41 of the feeding section 40 is rotated relative to the rotation drive shaft 35. As a result, the strip-shaped body 10 pulled out from the reel 41 is delivered without being twisted even if it is spirally wound by each tube-making roller 53a. Also,
By spirally winding the strip-shaped body 10 so as to be in close contact with the inner peripheral surface of the embedded pipe 20, the lining device for the inner peripheral surface of the pipe line has
A reaction force of the winding operation of the pipe manufacturing section 50 acts, and each wheel 34 rolls on the inner surface of the buried pipe 20 by the amount of winding of the band-shaped body 10, so that the entire pipe inner peripheral surface lining device is indicated by an arrow B in FIG. Are sequentially moved in the directions indicated by. The spiral tube closely attached to the inner peripheral surface of the spiral tube 10 is further pressed against the inner peripheral surface of the embedded tube 20 by the pressing roller 63 of the pressing portion 60, and more reliably pressure-bonded to the inner peripheral surface of the embedded tube 20. It

When such a lining operation is continued and all of the strip 10 wound around the reel 41 of the feeding portion 40 is used as a spiral tube for lining the inner peripheral surface of the embedded pipe 20,
The traveling motor 38 is rotated so that the entire lining device on the inner peripheral surface of the pipeline is moved to the shaft 70. And the original drum 71
The strip 10 is pulled out from the reel and wound around the reel 41 of the feeding part 40, and then the conduit inner circumferential surface lining device is moved to a position in the buried pipe 20 which is already lined with the spiral pipe. Then, the tip end of the strip 10 wound around the reel 41 of the feeding part 40 is connected to the end of the strip 10 in the spiral pipe lining the buried pipe 20 by overlapping, for example, by welding. Then, after the connection portion is surface-finished, the above-described lining operation is performed again.

FIG. 5 shows another embodiment of the pipe inner peripheral surface lining device of the present invention. In this embodiment, the feeding portion 40 provided in a portion of the rotary drive shaft 35 between the traveling portion 30 and the pipe manufacturing portion 50 is a pair of fixed drum plates 45 and 45 fixed to the rotary drive shaft 35, The rotary drum 46 is located between the fixed drum plates 45 and is rotatably fitted to the rotary drive shaft 35 by a bearing 48. Rotating drum
The strip 10 is sequentially wound around the outer peripheral surface of 46. At a predetermined position on the outer peripheral side of a disk-shaped fixed drum plate 45 provided on each end surface of the rotating drum 46,
Similar to the above embodiment, a pair of guide rollers 42 and 42 are rotatably provided. Each guide roller 42 has its distance appropriately adjusted with respect to the adjacent pipe-making roller 53a according to the inner diameter of the buried pipe 20, the dimensions of the strip 10 and elasticity, regardless of the lining speed of the strip 10. It is set to line the strip 10 in an optimum state. Further, between the fixed drum plate 45 and the rotating drum 46 on one side,
A connecting pin 47 is detachably provided. By mounting the connecting pin 47, the fixed drum plate 45 and the rotary drum 46 are integrated, and the rotation of the rotary drive shaft 35 causes the fixed drum to rotate.
The rotary drum 46 is rotated together with 45. When the connecting pin 47 is removed, the rotary drum 46 becomes rotatable with respect to the rotary drive shaft 35.

With such a structure, when the belt-shaped body 10 pulled out from the original fabric drum 71 is wound on the rotary drum 46,
Attaching the connecting pin 47, fixed drum plate 45 and rotating drum 46
And are connected. Then, by rotating the pipe-making motor 37, the rotating drum 46 is rotated.
The belt-shaped body 10 wound around the original fabric 71 is driven to rotate integrally with and is wound up on the rotary drum 46. And strips
When lining 10 on the inner peripheral surface of the buried pipe 20, the connecting pin
By removing 47, the rotary drum 46 becomes rotatable relative to the rotary drive shaft 35. When the lining work is performed in such a state, the belt-shaped body 10 is pulled out from the rotating drum 46 when the rotating body 51 of the pipe manufacturing section 50 is rotated. At this time, since the rotary drum 46 is rotated relative to the rotary drive shaft 35 by the roller bearing 48,
There is no fear that the strip-shaped body 10 spirally wound around the pipe manufacturing section 50 will be twisted. Moreover, since the fixed drum plate 45 rotates integrally with the rotary drive shaft 35, the guide rollers 42 and 42 provided on the fixed drum plate 45 and the pipe making roller of the pipe making unit 50 are provided.
The distance from 53a is always kept constant, which enables more stable lining operation.

FIG. 6 shows still another embodiment of the present invention. In this embodiment, the main body 31 of the traveling unit 30 and the pipe manufacturing unit
A guide member 80 in the form of a strip is provided between the guide member 80 and 50. Further, in place of the feeding unit 40 of each of the above-described embodiments, a feeding unit 90 separate from the traveling unit 30 is installed in the vertical shaft 70. Rotary drive shaft 35
Is hollow.

The feeding section 90 has a box-shaped housing 91 whose one side surface is open. In the housing 91, a cylindrical rotary drum 92 is arranged in the same direction as the axial direction of the buried pipe 20. It is arranged so that. The rotating drum 92 is supported by a plurality of rotating rollers 93 ... And 93 .. Further, each end surface of the rotating drum 92 is supported by a plurality of rotating balls 95 rotatably supported by the housing 91. Therefore, the rotating drum 92 is rotationally driven in the same direction in synchronization with the rotational drive shaft 35. Supported to be.

Inside the rotary drum 92, as shown in FIG. 7, a take-up shaft 94 is arranged so as to be orthogonal to the axial center direction of the rotary drum 92.
Are installed on the inner peripheral surface of the rotary drum 92, and the winding shaft 94
A strip 10 is wound around. The strip-shaped body 10 delivered from the delivery portion 90 is inserted into the rotation drive shaft 35 through an opening in one end surface of the rotation drive shaft 35. Running section
A strip-shaped guide portion 80 provided between the pipe 30 and the pipe manufacturing portion 40.
Has a cylindrical shape that is fitted with the rotary drive shaft 35, as shown in FIG. The rotary drive shaft 35 is separated by the inside of the guide portion 80, and the separated end portions are connected by the guide portion 80.
The belt-shaped body 10 inserted through one of the rotary drive shafts 35 is a guide portion.
It enters the inside of 80 and is led out in the direction of the pipe making section 50 through the inside of the lead-out section 81 provided in the guide section 80.

In the lining device for the inner peripheral surface of the conduit having such a structure, the rotary drum 92 of the feeding section 90 is rotated in the same direction in synchronization with the rotary drive shaft 35. As a result, the strip-shaped body 10 that is spirally wound in the pipe manufacturing unit 50 is supplied to the pipe manufacturing unit 50 without being twisted.

The present invention is not limited to the above embodiments, and instead of each air spring 32, a hydraulic spring, a coil spring or the like may be used. Further, instead of the wheels 34, an endless track or the like can be used. Further, a hydraulic cylinder or the like can be used instead of the pneumatic cylinder 52 and the pneumatic cylinder 62. Further, when the pipe inner peripheral surface lining device cannot be moved only by the reaction force due to the winding operation of the pipe manufacturing section 50, the traveling motor 38 is operated to forcefully drive the air spring 32. Good.
Further, the feeding section 90 shown in FIG. 6 may be caused to travel in association with the traveling section 30.

[0030]

As described above, the lining device for the inner peripheral surface of the pipe of the present invention, when the strip-shaped body is formed into the spiral pipe by the plurality of pipe-making rollers which are revolving along the inner peripheral surface of the pipe,
There is no risk of twisting the strip. Moreover, the spiral tube is reliably brought into close contact with the inner peripheral surface of the conduit by the pressing roller.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a lining device for an inner peripheral surface of a pipe according to the present invention.

FIG. 2 is a front view of a lining device for the inner peripheral surface of the conduit.

FIG. 3 is a cross-sectional view of a strip used in the lining device for the inner peripheral surface of the conduit.

FIG. 4 is a schematic explanatory diagram of an implementation state of a lining method by the pipe line inner surface lining device.

FIG. 5 is a vertical cross-sectional view showing a main part of a pipe line inner peripheral surface lining device according to another embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view showing a pipe line inner peripheral surface lining device in still another embodiment of the present invention.

7 is a perspective view showing a main part of a winding unit in the conduit inner peripheral surface lining device shown in FIG.

FIG. 8 is a vertical cross-sectional view of a strip-shaped body guide portion in the conduit inner peripheral surface lining device shown in FIG.

[Explanation of symbols]

 10 Band 20 Embedded pipe 30 Traveling part 32 Air spring 35 Rotation drive shaft 40 Feeding part 41 Reel 42 Guide roller 50 Pipe making part 52 Pneumatic cylinder 53a Pipe making roller 60 Pressing part 63 Pressing roller

Claims (1)

[Claims] 1. A spiral tube is manufactured by spirally winding a strip in a pipe and engaging side edges of adjacent strips with each other. A liner inner surface lining device for lining a surface, comprising: a running part capable of running in the pipe line in an axial direction; and a rotary drive connected to the running part along the axial direction of the pipe line. A rotary drive shaft, and a feeding portion having a rotary body provided so that the belt-shaped body is wound and freely rotatable, and each of the rotary drive shafts makes a circular movement along the inner circumferential surface of the conduit. As described above, the belt-shaped body is connected to the rotation drive shaft, and the belt-shaped body wound around the rotating body of the feeding unit is wound around and moves, so that the belt-shaped body is sequentially wound. The pipe making unit with multiple pipe making rollers enabled and the pipe making rollers A pressing part having a pressing roller connected to the rotary drive shaft so that the spiral tube is brought into rolling contact with the inner peripheral surface of the formed spiral tube so that the spiral tube is pressed against the inner peripheral surface of the conduit. Peripheral lining device.