JP2003311833A - Pressure bag and method for lining branch pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure bag in which the overall collar of a branch pipe lining material is brought into uniform contact with the peripheral edge of the opening of the branch pipe and can be surely adhered to the edge of the opening of the pipe. <P>SOLUTION: The pressure bag 11 is closed at one end by an end collar 15, and the branch pipe lining material 1 is contained in the bag 11. The bag 11 comprises a head collar 16 having a head collar lifting bar (head collar lifting part) 28 provided at the bag 11, moving cooperatively with the bag 11 when a hydraulic pressure is operated at the bag 11 and mounted at the end of the side oppositely to the side mounted with the collar 15. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure bag used for lining a branch pipe and a branch pipe lining method using the pressure bag.

[0002]

2. Description of the Related Art When a branch pipe buried in the ground is deteriorated, a branch pipe lining for repairing the branch pipe by lining the inner peripheral surface of the branch pipe without excavating the branch pipe from the ground. The construction method is known.

That is, in the branch pipe lining method described above, a branch pipe lining material obtained by impregnating a curable resin into a flexible tubular resin adsorbent material whose outer peripheral surface is covered with a highly airtight film is provided in the main pipe. The branch pipe lining material is introduced into the branch pipe from the main pipe side toward the ground by fluid pressure in a state where the collar formed at one end of the branch pipe lining material is brought into close contact with the peripheral edge of the branch pipe opening of the main pipe. This is a method in which the inner peripheral surface of the branch pipe is lined by inversion insertion and curing the curable resin impregnated in the branch pipe lining material in a state where the branch pipe lining material is in close contact with the inner wall of the branch pipe.

FIG. 14 shows an example of a conventional branch pipe lining method. In the illustrated branch pipe lining method, a nonwoven fabric (not shown) is attached to the upper surface of a collar 103 provided at one end of the branch pipe lining material 101. The non-woven fabric is impregnated with epoxy resin, the portion of the branch pipe lining material 101 excluding the collar 103 is housed in the pressure bag 111, and the collar 103 is installed on the head collar 116.
Are connected to the in-pipe work robot 135, and these are connected to the main pipe 1
Move within 30. Then, the state inside the main pipe 130 is changed to T
The head collar 116 and the branch pipe lining material 101 are monitored on the ground by the V cameras 140 and 145.
The collar 103 is positioned at the branch pipe opening 131a of the main pipe 130, and the in-pipe working robot 135 is driven to press the flange 103 of the branch pipe lining material 101 against the peripheral edge of the branch pipe opening 131a.

In the above state, a pressure fluid such as compressed air is supplied into the pressure bag 111 to supply the branch pipe lining material 1
01 by fluid pressure into the branch pipe 131 from the main pipe 130 side toward the ground, and the branch pipe lining material 101
When the curable resin impregnated in the branch pipe lining material 101 is cured while fluid pressure is applied to the pressure bag 111 and the branch pipe lining material 101 is brought into close contact with the inner wall of the branch pipe 131, the inner wall of the branch pipe 131 Is hardened branch pipe lining material 1
01 is lined and repaired.

[0006]

However, in the conventional branch pipe lining method described above, the head collar 116 is attached to the branch pipe opening 13 by the in-pipe working robot 135.
When pressing on the peripheral edge of the branch pipe 1a, the portion of the collar 103 of the branch pipe lining material 101 on the side of the in-pipe work robot 135 is surely pressed against the peripheral edge of the branch pipe opening 131a.
The portion on the opposite side (the portion on the pressure bag 111 side) of the head collar 116 and the arm 136 of the in-pipe work robot 135.
Due to the slight bending of the branch pipe opening 131a, the branch pipe opening 131a cannot be reliably pressed against the periphery of the branch pipe lining material 101, and a gap occurs between the flange 103 of the branch pipe lining material 101 and the periphery of the branch pipe opening 131a.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a pressure that allows the entire brim of the branch pipe lining material to be evenly adhered to the peripheral edge of the branch pipe opening portion for reliable adhesion. To provide a bag and branch pipe lining method.

[0008]

In order to achieve the above object, the present invention according to claim 1 provides a pressure bag having one end closed with an end collar and a branch pipe lining material housed therein. It is characterized in that a head collar provided with a head collar pushing-up portion that moves in association with the fluid pressure applied to the bag is attached to an end portion on the side opposite to the side to which the end collar is attached.

According to a second aspect of the present invention, a tubular pipe adsorbent material impregnated with a curable resin is provided with a flange at one end and the other end is hermetically sealed. The part is introduced into the main pipe in the state of being housed in the pressure bag, and the branch of the branch pipe lining material is supplied with the pressure fluid into the pressure bag with the flange of the main pipe being in close contact with the peripheral edge of the branch pipe opening of the main pipe. The pipe lining material is inserted into the branch pipe by fluid pressure from the main pipe side toward the ground, and the curable resin impregnated into the branch pipe lining material while the fluid pressure is applied to the branch pipe lining material and the pressure bag. In the branch pipe lining method of lining the branch pipe by curing the, the collar of the branch pipe lining material is installed on the upper part of the head collar attached to the pressure bag, and the head collar is connected to the in-pipe work robot. The tube By driving the work robot, pressing the head collar and the collar of the branch pipe lining material against the peripheral edge of the branch pipe opening, and applying fluid pressure to the pressure bag, the head collar push-up part attached to the head collar is pushed up. The head collar is pushed up so that the collar portion of the branch pipe lining material is brought into close contact with the peripheral edge of the branch pipe opening.

Therefore, according to the branch pipe lining method of claim 2 which is constructed by using the pressure bag of claim 1, when a fluid pressure is applied to the pressure bag, the pressure bag expands and the head collar is pushed up. In order to push the portion upward, the entire head collar is pushed up so that the entire collar of the branch pipe lining material uniformly adheres to the peripheral edge of the branch pipe opening, and the collar is reliably bonded to the peripheral edge of the branch pipe opening.

[0011]

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

FIG. 1 is a cross-sectional view of a branch pipe lining material used in the branch pipe lining method according to the present invention. The illustrated branch pipe lining material 1 is a tubular resin adsorbent 2 made of a nonwoven fabric.
, And one end thereof is folded back outward to form a flange-shaped collar 3. Then, the uncured liquid thermosetting resin is impregnated into the tubular resin adsorbent 2 except for the collar 3, and the outer surface of the portion is covered with a highly airtight plastic film 4.

As the material of the non-woven fabric constituting the tubular resin adsorbent 2, polyester, polypropylene, nylon, acrylic, vinylon, etc. are selected, and the thermosetting resin impregnated therein is unsaturated polyester resin, epoxy. Resin or the like is used. The material of the plastic film 4 is selected from polyurethane, polyethylene, polyethylene / nylon copolymer, vinyl chloride and the like.

By the way, the collar 3 formed at one end of the tubular resin adsorbent 2 constitutes a curved surface curved in an arc shape with a curvature equal to that of a main pipe 30 (see FIG. 6) described later, and its outer diameter is It is set to be larger than the inner diameter of a branch pipe 31 (see FIG. 6) to be described later, and the curable resin impregnated in the branch pipe 31 is cured, so that the collar 3 retains its shape. And
An adhesive impregnated resin adsorbent 5 is attached to the surface of the collar 3. Here, the adhesive impregnated resin adsorbent 5 is made of a felt material and is impregnated with an adhesive such as an epoxy resin.

Further, one end of a peeling valve 6 is detachably attached to the outer periphery of the branch pipe lining material 1 near the brim 3.

Further, the other end (inverted end) of the tubular resin adsorbent 2
A tubular peeling end 7 is detachably attached to the. The peeling end 7 has one end sealed, and the other end opening is fitted to the outer periphery of the end of the tubular resin adsorbent 2. The edge of the opening of the peeling end 7 and the plastic film 4 coated on the outer surface of the tubular resin adsorbent 2 are peelably bonded.
A pulling rope 8 is attached to the peeling end 7, and a hot water hose 9 is attached by a rubber rope 10.

Here, the tow rope 8 has a thickness of 3 mm.
The outer surface of a φ8 mm steel or stainless wire is coated with PVC, polyurethane, nylon or the like. Instead of the tow rope 8, a band-shaped nonwoven fabric is coated with PVC, polyurethane, nylon or the like. A traction belt may be used. The hot water hose 9 is a hose made of PVC and woven cloth, and maintains a flat shape in a pressureless state. Further, the rubber rope 10 is formed by mixing rubber and woven cloth.

Next, details of the structure of the pressure bag according to the present invention will be described with reference to FIGS. 2 is a longitudinal sectional view of the pressure bag, FIG. 3 is an enlarged detailed view of an end collar portion of the pressure bag, FIG. 4 is a sectional view taken along the line AA of FIG. 3, and FIG. It is a figure.

As shown in FIG. 2, the pressure bag 11 according to the present invention connects a flexible tubular bag 12 and a 45 ° elbow-shaped elbow bag 13 with an intermediate collar 14, and at the end of the tubular bag 12. Close the part with the end collar 15,
A head collar 16 is attached to the elbow bag 13, and the portion of the branch pipe lining material 1 excluding the collar 3 and the tow rope 8 and hot water hose 9 are housed therein.

Here, the tubular bag 12 and the elbow bag 13 are formed by coating the inner surface of a tubular non-woven fabric with a plastic film, or by coating the inner and outer surfaces of a tubular woven fabric with a plastic film. The end collar 15 and the head collar 16 are made of metal such as steel, stainless steel and aluminum.

By the way, as shown in FIGS. 3 and 4, a hot water supply port 17 and a hot water discharge port 18 are formed in the end collar 15, and an air hose mounting port 19 is provided.
(See FIG. 4) is formed, and a seal portion 20 is provided at the center.

Further, as shown in FIG. 3, the end collar 15 has a hot water supply pipe 21 connected to the hot water supply port 17.
Are horizontally projected toward the inside of the end collar 15, and one end of the hot water hose 9 is attached to the end thereof. Here, as shown in FIG.
Is stored in the pressure bag 11 in a folded state. The warm water hose 9 may be stored in the pressure bag 11 in a rolled state.

As shown in FIGS. 3 and 4, the hot water supply port 17 and the hot water discharge port 18 formed in the end collar 15 are provided with hot water hoses 22 and 23 disposed outside the pressure bag 11. One end is attached respectively.

Further, as shown in FIG. 3, the seal portion 20 is for passing the tow rope 8 in an airtight and slidable manner, and one end thereof is attached to the peeling end 7 of the branch pipe lining material 1. The tow rope 8 extends through the seal portion 20 to the outside of the pressure bag 11.

Here, as shown in FIG.
Includes a plurality (two in the illustrated example) of packings 24 (see FIG. 5) arranged inside and outside the pressure bag 11, and a plurality of packings 24 (four in the illustrated example) arranged outside the pressure bag 11. ), The packing 24, which is sandwiched by a plurality of (three in the illustrated example) nylon plates 26 attached to the outer surface of the end collar 15 and arranged in the pressure bag 11, is also cylindrical by the plurality of bolts 25. A plurality of sheets attached to the inner end surface of the member 27 (3 in the illustrated example
It is sandwiched by nylon sheets 26, and their inner peripheral ends are in contact with the outer periphery of the tow rope 8 and are deformed as shown in FIG. The packing 24 is made of polyurethane, fluororubber or the like.

On the other hand, as shown in FIG. 2, the head collar 16 is constructed by slantingly attaching a tubular portion 16b below a ring-shaped flange portion 16a.
A head collar push-up bar 28 is provided so as to protrude downward from the outer periphery of the. And this head color 16
The open end of the elbow bag 13 is attached to the outer periphery of the tubular portion 16b.

By the way, in the branch pipe lining material 1, as shown in FIG. 2, the collar 3 is placed on the upper surface of the flange portion 16a of the head collar 16, and the other portions except the collar 3 are pressed as shown in the figure. It is stored and set in the bag 11.

Thus, the branch pipe lining method according to the present invention is carried out by using the branch pipe lining material 1 and the pressure bag 11 for accommodating the branch pipe lining material. Before the branch pipe lining process is carried out, the main pipe is installed. The lining is applied to.
Therefore, first, the main lining method will be outlined based on FIGS. 6 to 8. 6 to 8 are sectional views showing the main pipe lining method in the order of steps.

6 to 8, 30 is a main pipe such as a sewer pipe, 31 is a small-diameter branch pipe that joins the main pipe 30, and when lining the main pipe 30, as shown in FIG. The main lining 32 is reversed and inserted by the action of fluid pressure. Here, the main pipe lining material 32 is formed by impregnating an uncured liquid thermosetting resin into a tubular resin adsorbing material 34 whose outer surface is covered with a highly airtight plastic film 33. As the tubular resin adsorbent 34 and the thermosetting resin, the same ones as those used for the branch pipe lining material 1 are used.

When the main pipe lining material 32 is inverted and inserted into the main pipe 30 over its entire length, the main pipe lining material 32 is expanded by fluid pressure as shown in FIG. The main lining material 32 is heated by any means while being pressed against the inner peripheral surface of the main pipe 30. Then, the thermosetting resin impregnated in the main lining material 32 is cured by heat, and thus the cured main lining material 3
The inner peripheral surface of the main pipe 30 is lined by 2 and repaired.

When the main pipe 30 is lined as described above, the branch pipe opening portion (the portion where the branch pipe 31 opens to the main pipe 30) 31a is closed by the main pipe lining material 32. The branch pipe opening 31 of the main lining material 32
The portion that closes a is cut off by a boring operation using a cutter (not shown), and as shown in FIG. 8, the branch pipe 31 communicates with the main pipe 30 through the branch pipe opening 31a. Then, the plastic film 33 around the branch pipe opening 31a of the main pipe lining material 32 is scraped off as follows.

That is, as shown in FIG. 8, an in-pipe working robot 35 is introduced into the main pipe 30.
An arm 36 that rotates in the direction of the arrow a in the drawing and moves up and down in the direction of the arrow b by hydraulic pressure is provided at the tip of the hydraulic motor 5, and a hydraulic motor 37 is fixed to the arm 36. Wire brush 38 on the output shaft of 37
Is attached. The material of the wire brush 38 is selected from steel, brass, stainless steel and the like.

Then, the above-mentioned in-pipe work robot 35 is attached to this, and is moved in the main pipe 30 by the tow rope 39 to be positioned near the branch pipe opening 31a as shown in the drawing. While monitoring the vicinity of the branch pipe opening 31a in the main pipe 30 on the ground by the TV camera 40 installed in the main pipe 30, the hydraulic motor 37 is driven to rotate the wire brush 38 and the head 36
Is rotated in the direction of arrow a in the figure and moved up and down in the direction of arrow b, so that the plastic film 33 around the branch pipe opening 31a of the main lining material 32 is scraped off by the wire brush 38. In FIG. 8, 41
Is a hydraulic hose, and 42 is a TV cable.

After the main pipe 30 is lined as described above, when the plastic film 33 around the branch pipe opening 31a of the main pipe lining material 32 is scraped off, the branch pipe 31 is subjected to the following procedure. The lining is applied to it.

The branch pipe lining method according to the present invention will be described below with reference to FIGS. 9 to 13. 9 to 13 are sectional views showing the branch pipe lining method in the order of steps.

At the time of lining the branch pipe 31, as shown in FIG. 9, the in-pipe working robot 35, the pressure bag 11, the branch pipe lining material 1 and the like, which have been previously assembled and integrated on the ground, are drawn into the main pipe 30. Be done.

The head collar 16 which constitutes the pressure bag 11 is attached to an arm 36 provided at the tip of the in-pipe working robot 35, and the collar of the branch pipe lining material 1 is attached to the head collar 16. 3 is placed and set, and the portion of the branch pipe lining material 1 excluding the collar 3 is housed in the pressure bag 11 as described above.
A tow rope 43 is attached to the end collar 15 of the pressure bag 11, and the pipe work robot 35 and the intermediate collar 14 of the pressure bag 11 are connected by a rope 44. In addition, a TV is provided above the intermediate color 14.
A camera 45 is attached, and this TV camera 45
A TV cable 46 extending from is extended to the ground and connected to a monitor device (not shown).

By the way, the tow rope 8 connected to the peeling end 7 of the branch pipe lining material 1 housed in the pressure bag 11 penetrates the seal portion 20 of the end collar 15 in an airtight manner and outside the pressure bag 11. To the ground, the end of which extends to the ground.

Thus, the closed space S defined by the end collar 15 and the branch pipe lining material 1 is formed in the pressure bag 11, and the air hose attachment port 19 ( The air hose 47 connected to (see FIG. 4) is connected to a compressor (not shown) installed on the ground, and the hot water is connected to the hot water supply port 17 and the hot water discharge port 18 (see FIG. 3) of the end collar 15. The hoses 22 and 23 are connected to a hot water facility (not shown) also installed on the ground.

In the above, the tow rope 39 or 4
Although the robot 35 for in-pipe work and the branch pipe lining material 1 and the pressure bag 11 and the like supported by this are moved integrally in the main pipe 30 by pulling 3, the TV camera 4
As shown in FIG. 9, the collar 3 of the branch pipe lining material 1 is connected to the opening 3 of the branch pipe 31 while monitoring the inside of the main pipe 30 by 0, 45 with a monitor device (not shown) installed on the ground.
1a, arm 3 of robot 35 for in-pipe work
6 is moved upward to press the collar 3 of the branch pipe lining material 1 and the adhesive impregnated resin adsorbent 5 attached to the surface thereof to the peripheral wall of the branch pipe opening 31a of the main pipe 30 to impregnate the adhesive impregnated resin. The adsorbent 5 is closely attached. At this time, the pressure bag 11
Air is evacuated from the enclosed space S inside.

Next, when a compressor (not shown) installed on the ground is driven to supply compressed air to the closed space S in the pressure bag 11 through the air hose 47, as shown in FIG. 10, the branch pipe lining material is provided. 1 receives the pressure of the compressed air and is inverted, and is sequentially inserted into the branch pipe 31 from the main pipe 30 toward the ground side (upward).

By the way, when the head collar 16 is pressed against the peripheral edge of the branch pipe opening 31a by the in-pipe work robot 35, the portion of the collar 3 of the branch pipe lining material 1 on the in-pipe work robot 35 side is aligned with the periphery of the branch pipe opening 31a. However, the head collar 16 and the arm 36 of the in-pipe work robot 35 are slightly bent, so that the head collar 16 and the arm 36 of the in-pipe working robot 35 are surely pressed against the periphery of the branch pipe opening 31a. However, there is a problem that a gap is generated between the collar 3 of the branch pipe lining material 1 and the peripheral edge of the branch pipe opening 31a.

Therefore, in the pressure bag 11 according to the present invention, the head collar push-up bar 28 is attached to the portion of the head collar 16 on the pressure bag 11 side. For this reason,
When the compressed air is supplied to the closed space S in the pressure bag 11 as described above, the elbow bag 13 of the pressure bag 11 expands by the pressure of the compressed air and pushes the head collar push-up bar 28 upward, so that the head collar 16 as a whole. Is pushed up and the brim 3 of the branch pipe lining material 1 and the adhesive-impregnated resin adsorbent material 5 become the branch pipe opening 31 of the main pipe lining material 32.
The adhesive-impregnated resin adsorbent 5 is pressed evenly to the peripheral edge of the a, and the adhesive-impregnated resin adsorbent 5 is securely adhered to the peripheral edge of the branch pipe opening 31a of the main pipe lining material 32.

Here, the length of the branch pipe lining material 1 is set to be shorter than the length of the branch pipe 31, and as shown in FIG. 11, the reverse insertion of the branch pipe lining material 1 into the branch pipe 31 is completed. Then, the branch pipe lining material 1 is partially pressed against the inner peripheral wall of a part of the branch pipe 31 (a portion having a predetermined length from the main pipe 30), and at this time, the peeling end 7 is inverted as shown in the drawing, The hot water hose 9 connected to this is arranged inside the branch pipe lining material 1, and the tow rope 8 passes through the seal portion 20 provided on the end collar 15 in an airtight manner and is drawn into the closed space S. At this time, a high airtightness is secured in the closed space S by the sealing action of the seal portion 20 and the peeling valve 6.

While maintaining the above state and maintaining the internal pressure of the closed space S substantially constant, the hot water pump or boiler of the hot water equipment (not shown) installed on the ground is driven to supply hot water to the hot water hose. If you run it to 22, 9 as shown in FIG.
Hot water is jetted in a shower shape from a plurality of spray holes (not shown) formed in the hot water hose 9 to heat the branch pipe lining material 1 from the inner surface side. Then, the warm water whose temperature has dropped due to the heating of the branch pipe lining material 1 falls and accumulates at the bottom of the closed space S, and the accumulated hot water is pushed out to the hot water hose 23 by the internal pressure of the closed space S. , Is returned to the hot water facility through the hot water hose 23, is again heated to a predetermined temperature by the boiler, and is passed through the hot water hoses 22 and 9 to form the closed space S.
And is used for heating the branch pipe lining material 1.

By repeatedly circulating hot water between the closed space S and the hot water equipment as described above,
The branch pipe lining material 1 is heated by hot water, the thermosetting resin impregnated in the branch pipe lining material 1 is hardened by heat, and the branch pipe 31 has one of its inner peripheral surfaces by the hardened branch pipe lining material 1. The part is partially lined and repaired. Since the adhesive-impregnated resin adsorbent 5 impregnated with an adhesive such as an epoxy resin is attached to the surface of the collar 3 of the branch pipe lining material 1, the adhesive-impregnated resin adsorbent 5 has an adhesive action. As a result, the collar 3 of the branch pipe lining material 1 is securely bonded and fixed to the peripheral edge of the branch pipe opening 31a of the main pipe lining material 32 (the portion where the plastic film 33 is scraped off).

When the branch pipe lining material 1 is hardened as described above, hot water is drained from the closed space S, and the pulling rope 8 is pulled in the direction of the arrow as shown in FIG. 7 is pulled in the same direction, and the peeling end 7 is separated from the inner peripheral surface of the branch pipe lining material 1.

After that, the arm 36 of the in-pipe work robot 35 is moved downward to separate the head collar 16 from the collar 3 of the branch pipe lining material 1, and then the tow rope 39 or 43 is pulled so that the work robot 35 and the pressure bag. 11 is moved in the main pipe 30, the peeling valve 6 is peeled from the inner peripheral surface of the branch pipe lining material 1, and the work robot 35 and the pressure bag 11 are removed from the main pipe 30. As shown in FIG. 13, the brim 3 of the hardened branch pipe lining material 1 and the tubular resin adsorbent 2 are left in the branch pipe 31, where the branch pipe 3
A series of lining work for 1 is completed.

As described above, in the branch pipe lining method according to this embodiment, the branch pipe 3 of the branch pipe lining material 1 is used.
Compressed air is pressed into the pressure bag 11 at the time of reversal insertion into 1
When it is supplied to the closed space S inside, the elbow bag 13 of the pressure bag 11 expands by the pressure of compressed air and pushes up the head collar push-up bar 28, so that the entire head collar 16 is pushed up and the branch pipe lining material 1 of the branch pipe lining material 1 is pushed up. Tsuba 3
And the adhesive impregnated resin adsorbent 5 is uniformly pressed to the peripheral edge of the branch pipe opening 31a of the main pipe lining material 32, and the adhesive impregnated resin adsorbent 5 is surely adhered to the peripheral edge of the branch pipe opening 31a of the main pipe lining material 32. To be in close contact.

In the above embodiment, the air pressure is used as the fluid pressure used for the inversion insertion of the branch pipe lining material 1 into the branch pipe 31, but instead of this, other fluid pressure such as water pressure is used. Can be used. Also, branch pipe lining material 1
Although hot water was used as the heating medium for heating the steam, steam, hot air, or the like can be used as the heating medium.

Further, in the above embodiments, the branch pipe lining construction method of partially lining the branch pipe has been described, but the present invention is a branch pipe lining construction method of lining the branch pipe over the entire length. Is similarly applicable to.

[0052]

As is apparent from the above description, claim 1
According to the branch pipe lining method according to claim 2, which is constructed using the pressure bag described above, when the fluid pressure is applied to the pressure bag, the pressure bag expands and pushes up the head collar pushing-up portion. The effect that the entire collar is pushed up so that the entire collar of the branch pipe lining material is evenly adhered to the peripheral edge of the branch pipe opening, and the collar is surely adhered to the peripheral edge of the branch pipe opening.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a branch pipe lining material.

FIG. 2 is a vertical sectional view of a pressure bag according to the present invention.

FIG. 3 is an enlarged detailed view of an end collar portion of the pressure bag according to the present invention.

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

5 is an enlarged detailed view of a B part in FIG.

FIG. 6 is a sectional view showing a main pipe lining method.

FIG. 7 is a cross-sectional view showing a main pipe lining method.

FIG. 8 is a sectional view showing a main lining method.

FIG. 9 is a cross-sectional view showing a branch pipe lining method according to the present invention.

FIG. 10 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 11 is a cross-sectional view showing a branch pipe lining method according to the present invention.

FIG. 12 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 13 is a sectional view showing a branch pipe lining method according to the present invention.

FIG. 14 is a cross-sectional view showing a conventional branch pipe lining method.

[Explanation of symbols]

1 Branch Pipe Lining Material 2 Tubular Resin Adsorbent 3 Collar 11 Pressure Bag 15 End Collar 16 Head Collar 28 Head Collar Lifting Bar (Head Collar Lifting Part) 30 Main Pipe 31 Branch Pipe 31a Branch Pipe Opening 32 Main Pipe Lining Material 35 Inside Pipe Robot for work

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yasuhiro Yokoshima             175-3 Sasayama, Ishishita-cho, Yuki-gun, Ibaraki             Company Yokoshima F-term (reference) 3H025 EA01 EB21 EC01 ED02                 4F211 AD12 AD25 AG03 AG08 AH43                       SA14 SC03 SD04 SD11 SD18                       SH06 SJ13 SJ15 SJ22 SJ31                       SN03 SP14 SP15

Claims (2)

[Claims] 1. A pressure bag having one end closed with an end collar and a branch pipe lining material housed therein, wherein a head collar push-up portion that moves in conjunction with a fluid pressure applied to the pressure bag is provided. A pressure bag, characterized in that a head collar is attached to an end opposite to a side to which the end collar is attached. 2. A branch pipe lining material formed by forming a collar at one end of a tubular resin adsorbent impregnated with a curable resin and hermetically sealing the other end into a pressure bag. The branch pipe lining material is introduced into the main pipe in a housed state, and a pressure fluid is supplied into the pressure bag while the flange of the branch pipe lining material is brought into close contact with the peripheral edge of the branch pipe opening of the main pipe to fluidize the branch pipe lining material. By inserting it in the branch pipe from the main side to the ground,
A branch pipe lining method for lining a branch pipe by curing a curable resin impregnated in the branch pipe lining material while applying a fluid pressure to the branch pipe lining material and the pressure bag. The collar of the branch pipe lining material is installed on the upper part of the head collar, the head collar is connected to the in-pipe work robot to drive the in-pipe work robot, and the head collar and the branch pipe lining material collar portion are opened to the branch pipe. The head collar is pushed up by pushing the head collar pushing up the head collar attached to the head collar while pushing the fluid pressure on the pressure bag, and the branch pipe lining material brim is brought into close contact with the edge of the branch pipe opening. A branch pipe lining method characterized by that.