JP2003113992A - Positioning method for pipeline reclaiming sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a positioning method capable of accurately sticking a water cut-off member and the other pipeline reclaiming sheet to the periphery of an installing pipe port in a main pipe. SOLUTION: This positioning method for the pipeline reclaiming sheet comprises forming a window hole 76 having the almost same diameter as the installing pipe port 12 in the central vicinity of a pressing plate 51 having proper curving elasticity, and placing the pipeline reclaiming sheet (the water cut-off member 4) prearranged with an opening part 43 on the pressing plate 51 so that the opening part 43 coincides with the window hole 76. When carrying the pressing plate 51 in the main pipe 1 by being held on a carriage 52, while confirming a position of the installing pipe port 12 via the window hole 76 by a camera 77 arranged on the reverse side of the pressing plate 52, the carriage 52 is guided so that the pressing plate 51 is straightly opposed to the installing pipe port 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rehabilitation work for lining an existing pipe buried in the ground with a rehabilitation pipe. The present invention relates to a positioning method for sticking.

[0002]

2. Description of the Related Art Generally, when an existing pipeline for sewage or the like buried in the ground is deteriorated, it is possible to reinforce the pipeline by lining the inner surface of the pipeline with a rehabilitation pipe made of resin. Has been done. In particular, when an attachment pipe (branch pipe) is connected to the main pipe of an existing pipe, the connection between the two is often deteriorating due to the effects of ground changes, etc. There is a risk that soil water such as will flow into the main pipe and the amount of water in the main pipe will exceed the allowable amount. That is, as shown by the arrow in FIG. 6, the underground water w flows into the main pipe 1 through a slight gap formed between the main pipe 1 and the mounting pipe 2.

In order to repair such a leaked portion, the applicant of the present invention inserts a rehabilitation pipe made of a thermoplastic resin such as vinyl chloride or high density polyethylene into an existing pipeline, and heats and pressurizes it. The technology for rehabilitating the inner surface of the existing pipeline by expanding it and bringing it into close contact with the inner surface of the existing pipeline has been put to practical use. In carrying out such rehabilitation work, especially at the connecting portion between the main pipe and the mounting pipe, after the rehabilitation pipe 3 inserted into the mounting pipe 2 is expanded in the mounting pipe 2 as shown in FIG. 7, for example. By cutting the tip of the rehabilitation pipe 3 into the main pipe 1 so as to project, and pressing and cutting the cut end while heating from the main pipe 1 side to shape along the inner surface of the main pipe 1. The method of forming the flange-shaped flange 31 on the tip of the rehabilitation pipe 3 is effective.

In the present specification, the pipe end of the mounting pipe 2 connected to the main pipe 1 is referred to as "mounting pipe port 12", but the mounting pipe port 1 is formed by the flange 31 integrally formed with the rehabilitation pipe 3 in this manner.
By covering 2 the soil water w can be prevented from flowing in from the periphery of the mounting pipe port 12.

[0005]

In the rehabilitation work as described above, a watertight seal is provided between the periphery of the attachment pipe opening 12 of the main pipe 1 and the outer surface of the flange 31 formed at the tip of the rehabilitation pipe 3. It is desirable to ensure complete water stopping by interposing a water shutoff member 4 having high properties. As the water blocking member 4, for example, a synthetic rubber material such as butyl rubber formed in a sheet shape is suitable.

However, it is not easy to accurately attach such an adhesive water blocking member 4 to the periphery of the mounting pipe port 12 in a small-diameter conduit in which an operator cannot enter. In some cases, the mounting pipe 2 is connected to the main pipe 1 not obliquely but directly above, and in such a case, positioning of the water blocking member 4 becomes more difficult.

The present invention has been made in view of the above circumstances, and a water blocking member as described above, or an appropriate sheet-shaped member similar thereto (in the present specification, these are collectively referred to as "pipe rehabilitation"). It is intended to provide a positioning method capable of accurately affixing a "sheet for use") around the attachment pipe opening in the main pipe.

[0008]

A method for positioning a sheet for rehabilitation of a conduit according to the present invention provides a sheet for rehabilitating a conduit having an opening having substantially the same diameter as that of a mounting pipe opening in advance with an appropriate bending elasticity. The pressing plate is placed on the surface of the pressing plate, the pressing plate is held on a carriage that can move inside the main pipe, and is carried into the main pipe. Is attached to the periphery of the installation pipe opening in the main pipe to attach the pipe rehabilitation sheet to the periphery of the installation pipe port. A window hole having substantially the same diameter as the pipe opening is formed, and when the sheet for rehabilitating the pipeline is placed on the pressing plate, the opening of the sheet for rehabilitating the channel is aligned with the window hole, and the back side of the pressing plate is formed. A camera for positioning is installed in the window so that it faces the window, and While checking the position of the attachment tube outlet by the camera through the opening of the pressing plate is characterized in that induces carriage as directly facing the mounting pipe opening.

According to the present invention, the position of the mounting pipe port is set by the camera provided on the back side of the pressing plate through the window hole formed near the center of the pressing plate and the opening portion of the conduit rehabilitation sheet held on the pressing plate. Since it is configured to guide the trolley while checking, the position of the mounting pipe opening can be grasped from the front side, and the opening of the pipeline rehabilitation sheet matches the mounting pipe opening accurately. It becomes possible to position the carriage.

In addition, in the method for positioning a sheet for rehabilitating a pipeline according to the present invention, instead of the camera, the rear side of the pressing plate projects from a window hole of the pressing plate and an opening of the sheet for rehabilitating the main tube. Is provided with a spring sensor that comes into contact with the inner surface of the carriage, and the carriage is guided so that the pressing plate faces the mounting pipe opening while searching for the position of the mounting pipe opening with the spring sensor.

According to the present invention, a window is formed near the center of the pressing plate and a spring sensor protruding through the opening of the conduit rehabilitation sheet held on the pressing plate guides the carriage while searching for the position of the mounting pipe opening. Since it is configured so that the position of the mounting pipe opening can be grasped from the front side, the carriage can be accurately positioned so that the opening of the pipeline rehabilitation sheet matches the mounting pipe opening. It will be possible.

A spring sensor according to the present invention comprises a sensor pin held so as to be bendable or swingable, and a contact switch for detecting the attitude of the sensor pin.
When the sensor pin contacts the inner surface of the main pipe and is bent or tilted, and when the sensor pin enters the mounting pipe opening and stands upright, the contact type switch notifies the state change by a change in electrical signal. Can be formed. With such a configuration, the spring sensor can be realized with an economical structure and highly reliable positioning work can be performed.

Further, a plurality of the spring sensors may be provided substantially in parallel within a range narrower than the opening area of the mounting pipe port. The position of the mounting pipe port can be detected more accurately by the plurality of spring sensors, and the opening of the conduit rehabilitation sheet and the mounting pipe port can be accurately matched.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

<Pipe rehabilitation sheet> First, as an example of the pipe rehabilitation sheet used in the present invention, a water blocking member used for water blocking work around the mounting pipe port 12 as shown in FIG. 7 is used. As shown in FIG.

The water stopping member 4 illustrated has a cloth-like or porous sheet-like body 41 having an appropriate elasticity as a core material,
A synthetic rubber adhesive material 42 as a main material is attached to one or both surfaces of the adhesive material 42 with a substantially uniform thickness. Examples of the core material include a nonwoven fabric made of PET (polyethylene terephthalate) fiber, a sheet-like body 41 made of polyethylene, polypropylene, or another synthetic resin,
A synthetic resin film having a large number of holes can be used. Further, as the synthetic rubber-based adhesive material 42, butyl rubber, polyisobutylene,
It is possible to use synthetic rubber such as styrene / butadiene rubber, polychloroprene (neoprene) rubber, and nitrile rubber in the form of a solution having high viscosity. These synthetic rubbers are excellent in corrosion resistance, spreadability, adhesiveness, etc., but when they are made into a solution, the shape-retaining power of themselves decreases and they drop or sag under their own weight. It is easy to maintain the sheet-like shape by attaching it to the.

The water shut-off member 4 is formed in a circular outer shape in order to stop the water around the mounting pipe port 12 in an annular shape, and an opening 43 having a size substantially equal to the inner diameter of the mounting pipe 2 is formed in the center thereof.
Are formed. The outer shape of the water blocking member 4 is not particularly limited to a circle, but rather than a rectangle or other polygonal shape,
A circular shape, an elliptical shape, or a rounded shape is preferable because it is hard to peel off after sticking.

<Pasting Device> An embodiment of a pasting device for carrying in the water blocking member 4 as described above into the main pipe 1 and pasting it to the mounting pipe port 12 is shown in FIGS. .

In this sticking device 5, a pressing plate 51 for holding the water blocking member 4 is mounted on a carriage 52 that can move in the main pipe 1 via a lifting support means and an angle adjusting means. It is held so that it can be raised and lowered with respect to the carriage 52 and that the raising and lowering direction can be tilted along the inner peripheral direction of the main pipe 1.

The trolley 52 is formed so that its bottom portion extends along the inner surface of the main pipe 1. Near the four corners of the bottom portion, substantially hemispherical leg portions 53 made of a material such as resin or metal that easily slips on the inner surface of the main pipe 1 are attached. This dolly 52
Is moved in the main pipe 1 by pulling and guiding with a wire or the like or through an appropriate self-propelled means, and is arranged in the vicinity of the attachment pipe port 12.

A pair of supporting members 54 are erected opposite to each other in front of and behind the carriage 52. A shaft member 55 and a bearing member 56 are attached to the upper portions of the front and rear support members 54 so that their front and rear axes coincide with each other, thereby forming a rotary shaft parallel to the traveling direction of the carriage 52. .
A base 57 is attached to the rotary shaft in a suspended state. The base portion 57 includes an oscillating member 58 attached to the front and rear shaft members 55, respectively, and an oscillating member 58 in the front and rear.
Is formed by a pair of left and right connecting rods 59 that connect the
It is held so as to be tiltable to the left and right with respect to the traveling direction around the rotation axis. A motor 60 for changing the tilt angle of the base 57 is attached to one of the front and rear ends of the carriage 52, and the drive shaft of the motor 60 is coupled to one shaft member 55. This motor 60
Are artificially controlled from outside the main body 1. The front and rear supporting members 54, the base 57 and the motor 60 constitute an angle adjusting means.

Pantograph type registering tongues 61 are attached to the front and rear of the base 57, respectively. The registration tongue 61 is a mechanism that has been conventionally used for a pantograph of a train, a retractable magic hand, and the like, and has a plurality of link arms 62 that are hinged to intersect with each other in a rhombus shape, and form a pair of base end portions. When the interval of 63 is expanded or contracted, the crossing angle of the link arm 62 changes and the entire length expands or contracts. The registering tongues 61 used in the sticking device 5 are provided so as to form a pair of right and left in front of and behind the base 57 with the extension direction facing upward. The respective base end portions 63 are integrally connected to each other in the width direction of the base portion 57 via elongated base end connecting members 64. Each base end connecting member 64 has a pair of left and right connecting rod insertion holes 65, and the left and right connecting rods 5 that form the base 57 in these connecting rod insertion holes 65.
9 are inserted respectively.

Further, a female screw hole 67 is formed at the center of the base end connecting member 64 in the width direction, and a guide bolt 68 provided at the center of the base 57 in the width direction is formed in the female screw hole 67. It is screwed. The guide bolt 68 has a base 57.
Is arranged between the rocking members 58 before and after forming the gear 6
It is configured to be rotated by receiving a driving force of a motor 71 placed substantially in the center of the base portion 57 via 9, 70.
Also, near both ends of the guide bolt 68. Male screws corresponding to the female screws formed on the base end connecting member 64 are formed respectively. The female screw and the male screw are respectively the left screw 72 and the right screw 7 with respect to the pair of base end portions 63.
It is 3. Therefore, when the guide boll rotates, the base end connecting member 64 screwed to the guide boll moves in the opposite directions so as to expand or contract the interval between the base end portions 63 of the respective resisting portions 61. The lifting tongue 61, the base end connecting member 64, the guide bolt 68, and the motor 71 form an up-and-down supporting means.

A cover member 74 is formed on the upper end of the registration tongue 61 so as to cover the left and right registration tongues 61.
Is attached. A pressure plate support arm 75 is attached to the side surface of the cover member 74 so as to project obliquely upward and to the left and right with respect to the traveling direction of the carriage 52. Both ends of the pressing plate support arm 75 are hinged to the side surface of the cover member 74 and the four corners of the rear surface of the pressing plate 51.

The pressing plate 51 is formed of a metal plate or a resin plate having an appropriate bending elasticity, and is shaped so as to be curved with its front side convex. On the surface of the pressing plate 51,
A mold release treatment is performed so that the synthetic rubber-based adhesive material 42 forming the water blocking member 4 can be detachably held. A window hole 76 having substantially the same diameter as the diameter of the mounting pipe port 12 is formed near the center of the pressing plate 51. Then, the water blocking member 4 is placed on the pressing plate 51 so that the opening 43 formed at the center of the water blocking member 4 is aligned with the window hole 76.

A positioning camera 77 is attached to the rear surface of the pressing plate 51 facing the window hole 76 of the pressing plate 51 (the upper part of the motor 71 in this example). The camera 77 takes an image of the inner surface of the upper portion of the main pipe 1 through the opening 43 formed in the water blocking member 4 and the window hole 76 formed in the pressing plate 51, and the imaged data is taken from outside via a cable (not shown). It is designed to be transmitted to a monitor device. The operator adjusts the position of the carriage 52 so that the window hole 76 of the pressing plate 51 faces the mounting pipe opening 12 while checking the imaged data of the camera 77, and further operates the motor 60 to operate the pressing plate 51. The up and down direction of can be adjusted.

Further, the sticking device 5 of the water blocking member 4 includes:
A posture fixing means for fixing the carriage 52 when the pressing plate 51 is pressed against the inner surface of the main pipe 1 is provided. This attitude restraining means uses the pressing plate 51 for the main pipe 1 when the mounting pipe 2 connected to the main pipe 1 is open not obliquely above the main pipe 1 but obliquely upward.
The trolley 52 is driven by the reaction force when it is pressed diagonally upward with respect to
Are provided in order to prevent an inclination of the main body 1 in the main body 1.

The posture restraining means is formed by a telescopic member 78 provided upright in front of and behind the carriage 52. Elastic member 78
Is a cylinder piston mechanism that expands and contracts due to fluid pressure such as air pressure, gas pressure, and hydraulic pressure.
In each of the front and rear parts, two elastic members 78 are provided so as to form a pair on the left and right. The cylinder portion 79 of the expansion / contraction member 78 is fixed to the dolly 52 in a stationary state, and the piston rod portion 80 is projected and retracted in the vertical direction from the cylinder portion 79. At the upper end of the piston rod 80,
An abutting member 81 is attached so as to integrally connect the left and right piston rod portions 80. The surface of the abutting member 81 is formed so as to exert an appropriate frictional force with the inner surface of the main pipe 1.

<Adhesion work> The adhesion work of the water blocking member 4 using this adhesion device 5 is carried out as follows. First, the water blocking member 4 is placed on the pressing plate 51 of the sticking device 5. At this time, the opening 4 formed in the center of the water blocking member 4
3 and the window hole 76 of the pressing plate 51 are matched. When the diameter of the opening 43 and the diameter of the window hole 76 are slightly different from each other, their centers are made to coincide with each other. Then, the sticking device 5 is inserted into the main pipe 1.

The inner surface of the main pipe 2 to which the water blocking member 4 is adhered is often wet due to water leakage or sludge, but the synthetic rubber adhesive 42 such as butyl rubber is adhered when the surface is wet. Since the force decreases, it is preferable to apply a water-curable resin to the surface of the water blocking member 4 in advance.

The operator confirms the position of the mounting pipe port 12 with the positioning camera 77, and moves the trolley 52 to the main pipe 1.
The dolly 52 is moved inside, and the dolly 52 is stopped at a position where the camera 77 directly faces the mounting pipe opening 12. When the mounting pipe port 12 is opened obliquely upward with respect to the main pipe 1, the motor 60 constituting the angle adjusting means is driven to adjust the tilt angle of the base 57.

When the carriage 52 is positioned at the proper position in this way, the expansion / contraction member 78 is extended to abut the contact member 81.
Is abutted against the inner surface of the main pipe 1, and the posture of the carriage 52 is fixed in a tensioned state.

Subsequently, the motor 7 constituting the elevating and supporting means.
1 is driven to raise the pressing plate 51 toward the mounting pipe opening 12. The normal bending radius of the pressing plate 51 held near the four corners by the pressing plate support arm 75 is shown in FIG.
As shown in (b), it is set to be smaller than the inner radius of the main pipe 1. Then, when the elevating and supporting means operates to raise the cover member 74, the cover member 74
Attaches the pressing plate 51 to the main pipe 1 via the pressing plate supporting arm 75.
Press on the inner surface of. Then, the pressing plate 51 first contacts the inner surface of the main pipe 1 from the vicinity of the center thereof. Cover member 74
When the pressure plate 51 further rises, the pressing plate support arms 75 receiving the reaction force from the inner surface of the main pipe 1 rotate so as to bring their angles close to each other horizontally, and expand the radius of curvature of the pressing plate 51. In this way, the pressing plate 51 is gradually pressed against the inner surface of the main pipe 1 from the vicinity of the center to both side edges, and the water blocking member 4 is attached to the inner surface of the main pipe 1 as shown in FIG.

When the water blocking member 4 is adhered to the main pipe 1 over the entire surface, the motor 71 constituting the elevating and lowering means is driven in the opposite direction to separate the pressing plate 51 from the mounting pipe port 12. At the time of separation, as the cover member 74 descends, the pressing plate 51 gradually separates from the main pipe 1 from both side edges to the vicinity of the center while reducing the diameter of the curvature pipe by its elasticity. By such a raising / lowering operation of the pressing plate 51, the sticky sheet-like water blocking member 4 can be accurately attached to the main pipe 1 without leaving bubbles between the main pipe 1 and the main pipe 1. .

<Other Positioning Method of Adhering Device> In the adhering device 5 described above, the camera 77 is adopted as the positioning means of the carriage 52, but the adhering device 5B adopting a spring sensor instead of the camera 77. Is shown in FIGS.

In this sticking device 5B, the rear surface of the pressing plate 51 facing the window hole 76 of the pressing plate 51 (the motor 71 in this example).
A spring sensor 82 is attached to the upper part of the. The spring sensor 82 is provided in the window hole 7 of the pressing plate 51.
A sensor pin 83 protruding upward via 6 and a contact switch 84 for detecting the attitude of the sensor pin 83 are provided. The sensor pin 83 is made of, for example, a rod-shaped material having bending elasticity, and is held so as to stand upright when an external force does not act, and to bend or tilt in that direction when an external force acts. The length of the sensor pin 83 depends on the sticking device 5B.
It is set so that the tip can always come into contact with the inner surface of the main pipe 1 when the main pipe 1 is inserted into the main pipe 1. Then, when the window hole 76 of the pressing plate 51 moves to a position directly facing the mounting pipe port 12, the tip of the sensor pin 82 enters the mounting pipe port 12 and stands upright.

The contact type switch 84 determines whether the sensor pin 82 is in contact with the inner surface of the main pipe 1 and is curved or tilted, or whether the sensor pin 82 is in the upright state after entering the mounting pipe port 12. It is provided so as to notify the outside of the state change by the change of the electric signal. The operator moves the carriage 52 while checking the signal notified from the contact type switch 84, searches for the position of the mounting pipe port 12 with the sensor pin 83, and the window hole 76 of the pressing plate 51 is aligned with the mounting pipe port 12. The carriage 52 can be positioned to face it.

In order to improve the positioning accuracy when using such a spring sensor 82, the following structure is effective.

First, with respect to the tube axis direction of the main tube 1 (the advancing direction of the sticking device 5), the displacement of the tip when the sensor pin 83 is in contact with the main tube 1 with respect to the upright state (in FIG. 4). The symbol x) is 1 of the inner diameter of the mounting pipe port 12.
The length of the sensor pin 83 is set so as to be substantially equal to / 2. Then, when the base of the sensor pin 83 reaches the pipe axis position of the mounting pipe 2, the tip of the sensor pin 83 just enters the mounting pipe port 12 and stands upright. As a result, the vicinity of the center of the mounting pipe port 12 can be accurately detected in the pipe axis direction of the main pipe 1.

Further, in the radial direction of the main pipe 1 (direction orthogonal to the pipe axis of the main pipe 1), as shown in FIG.
A plurality of sensor pins 82 (three in this example) protruding from the one window hole 76 are provided.
Are arranged along the radial direction of the main pipe 1. These sensor pins 82 are arranged in parallel with each other within a range slightly narrower than the opening area of the mounting pipe port 12. Then, the attitude of each sensor pin 83 is individually detected by the contact type switch 84 provided for each sensor pin 82. According to such a configuration, all the sensor pins 83 are attached to the mounting pipe port 1
By operating the trolley 52 and the angle adjusting means so as to enter into the inside 2, the window hole 76 of the pressing plate 51 is moved to the mounting pipe opening 1
2 can be almost directly faced.

With such a positioning method, the pressing plate 5
By directly facing the window hole 76 of No. 1 to the mounting pipe port 12,
The water blocking member 4 held on the pressing plate 51 is attached to the opening 4
It can be attached to the inner surface of the main pipe 1 with high accuracy so that 3 is aligned with the attachment pipe opening 12.

In the above description, the positioning method for adhering the adhesive water blocking member 4 around the mounting pipe opening 12 has been illustrated, but the present invention is not limited to such a water blocking member 4, and is not limited to this. It can be applied even when other sheet for pipe rehabilitation similar to the above is attached.

Further, the sticking device used in the practice of the present invention is provided with a pressing plate for holding the conduit rehabilitation sheet, and a window hole having substantially the same diameter as the mounting pipe opening is formed near the center of the pressing plate. The supporting structure and the structure of the dolly and the like are not particularly limited to the above-mentioned embodiment as long as they are provided.

[0044]

According to the method of positioning a sheet for rehabilitating a pipeline of the present invention, a window hole having a diameter substantially the same as that of the mounting tube opening is formed near the center of the pressing plate for holding the sheet for rehabilitating the channel, and the sheet is further rehabilitated for the channel. An opening is also formed in the seat for use in advance, and this opening is made to coincide with the window hole of the pressing plate, and the position of the mounting pipe port is confirmed by a camera for positioning or a spring sensor through the window hole and the opening. Since it is configured as described above, the position of the mounting pipe port can be grasped not from an oblique direction with respect to the mounting pipe port but from the front center. Therefore, it is possible to accurately guide and position the carriage so that the opening of the conduit rehabilitation sheet exactly matches the mounting pipe opening.

By adhering the pipeline rehabilitation sheet to the main pipe by using such a positioning method, the workability in the rehabilitation work or the water stoppage work of the existing pipeline can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing a structure of a water blocking member as an example of a conduit rehabilitation sheet used in the present invention.

FIG. 2 is an explanatory view showing a cross-sectional configuration in the tube axis direction of the sticking device used in the present invention.

FIG. 3 is an explanatory view showing a cross-sectional configuration in the width direction of the sticking device shown in FIG. 2, in which (a) is a state in which a pressing plate is raised,
(B) shows the state where the pressing plate is lowered.

FIG. 4 is an explanatory diagram showing a cross-sectional configuration in the tube axis direction of another sticking device used in the present invention.

5 is an explanatory diagram showing a cross-sectional configuration in the width direction of the sticking device shown in FIG. 4, showing a state in which a pressing plate is lowered.

FIG. 6 is a cross-sectional view illustrating the inflow of soil water into an existing pipe.

FIG. 7 is a cross-sectional view showing an example of work for rehabilitating a connecting portion between a main pipe and an attachment pipe in an existing pipe line.

[Explanation of symbols]

1 main 12 Mounting pipe port 2 Mounting tube 4 Water stop member (sheet for pipeline rehabilitation) 43 opening 51 pressing plate 52 dolly 76 window 77 camera 82 Spring sensor 83 sensor pins 84 contact switch

Continued front page    F-term (reference) 2D063 EA08                 3H025 EA01 EB01 EB21 EC01 ED02                       EE01 EE04                 4F211 AC03 AD05 AD08 AH43 AP06                       AQ00 AR07 SC03 SD01 SJ15                       SJ21 SJ22 SJ29 SK04 SN02                       SP01

Claims (4)

[Claims] 1. A sheet for rehabilitating a conduit, in which an opening having substantially the same diameter as the mounting tube opening is formed in advance, is placed on the surface of a pressing plate having an appropriate bending elasticity, and the pressing plate is inserted into the main pipe. Is carried on to the main body while holding it on a movable carriage, and after the carriage is stopped near the attachment pipe opening, by pressing the pressing plate toward the periphery of the attachment pipe opening in the main pipe, Attaching the duct rehabilitation sheet around the mounting pipe opening In the pasting work of the duct rehabilitation sheet, a window hole of approximately the same diameter as the mounting pipe port is formed near the center of the pressing plate,
When placing the pipeline rehabilitation sheet on the pressing plate, the opening of the pipeline rehabilitation sheet and the window hole are aligned, and a positioning camera is provided on the back side of the pressing plate so as to face the window hole. A pipeline that guides the carriage so that the pressing plate faces the mounting pipe opening while confirming the position of the mounting pipe opening by the camera through the window hole and the opening of the pipeline rehabilitation sheet. Positioning method for rehabilitation sheet. 2. A sheet for rehabilitating a conduit, in which an opening having substantially the same diameter as the mounting tube opening is previously formed, is placed on the surface of a pressing plate having an appropriate bending elasticity, and the pressing plate is attached to the inside of the main pipe. Is carried on to the main body while holding it on a movable carriage, and after the carriage is stopped near the attachment pipe opening, by pressing the pressing plate toward the periphery of the attachment pipe opening in the main pipe, Attaching the duct rehabilitation sheet around the mounting pipe opening In the pasting work of the duct rehabilitation sheet, a window hole of approximately the same diameter as the mounting pipe port is formed near the center of the pressing plate,
When placing the pipeline rehabilitation sheet on the pressing plate, the opening of the pipeline rehabilitation sheet and the window hole are made to coincide with each other, and the window of the pressing plate and the pipeline rehabilitation sheet are provided on the back side of the pressing plate. Is provided with a spring sensor that protrudes from the opening of the main body and contacts the inner surface of the main pipe.The spring sensor searches for the position of the mounting pipe opening and guides the carriage so that the pressing plate faces the mounting pipe opening. Positioning method for pipe rehabilitation sheet. 3. The spring sensor includes a sensor pin held so as to be bendable or swingable, and a contact switch for detecting the attitude of the sensor pin, and the sensor pin comes into contact with the inner surface of the main pipe and is bent or tilted. The contact switch is formed to notify the change of state by a change of an electric signal when the sensor pin enters the mounting pipe opening and stands upright from the state. Positioning method for pipeline rehabilitation sheet. 4. The method for positioning a pipeline rehabilitation sheet according to claim 2, wherein a plurality of spring sensors are provided in parallel within a range narrower than the opening area of the attachment pipe opening. .