JPH08156094A - Tube interior-repairing machine - Google Patents

Abstract

PURPOSE: To obtain a tube interior-repairing machine which can be used for a large-diameter tube having an inner diameter larger than the diameter of a manhole inlet by forming a cylindrical rubber sleeve in the state that predetermined rubber attachments are mounted at a body. CONSTITUTION: A tube interior repairing machine 2 comprises a body 3, and predetermined number of rubber attachments 4 removably mounted at the body 3. A cylindrical rubber sleeve 5 is formed by the attachments 4 in the state that the predetermined number of the attachments 4 are mounted at the body 3. Specifically, the sleeve 5 is divided into the predetermined number, and the attachments 4 are formed. The number of the attachments 4 is decided in response to the diameter of the sleeve 5 formed in a cylindrical shape, and divided to three or more.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-pipe repair machine for partially repairing a pipeline such as a main pipe of a sewer buried in the ground from its inner surface.

[0002]

2. Description of the Related Art Conventionally, ceramic pipes, fume pipes made of concrete, ENVI pipes made of synthetic resin, etc. have been used for main pipes of sewers buried underground. Aging causes cracks, breakage, and disconnection of connections due to subsidence of underground ground and fluctuations in ground pressure.

In the case of repairing such a defective portion, conventionally, a crack or a damaged portion is filled with a filler such as concrete or a solvent for partial repair, or the main pipe of the defective portion is replaced. Action was being taken.

However, since the above-mentioned repair of filling the filler is a temporary measure, there is a problem that the repair process must be repeatedly performed, and the repair of laying the main pipe of the defective part is an open cut. Since it is a large-scale work that involves construction, it is likely to cause traffic obstacles and adverse effects on neighboring residents, and it may not be possible to carry it out depending on the surrounding circumstances.

Therefore, in recent years, in order to solve such a situation, an in-pipe repair machine having a stretchable cylindrical repair material in which a glass cloth and a non-woven fabric are laminated is wound around the manhole from the manhole. Introduced to repair points on the road,
An inner surface partial repair construction method (hereinafter referred to as an FRP construction method) has been developed in which repair work that also functions as reinforcement is performed by crimping and hardening on the inner peripheral surface of a defective portion.

As an in-pipe repair machine applied to such an FRP method, there is, for example, one shown in FIG.

The in-pipe repair machine 101 has a main body 103 having both ends of a cylindrical rubber sleeve 102 having elasticity.
The main body 103 is fixed to the front and rear support plates 104 so as to bulge and shrink, and the support plates 104 are connected by a connecting rod 105.

On the inner surface of the rubber sleeve 102,
A ceramic heater 106 is provided.

Towed metal fittings 107 are attached to the lower portions of the front and rear support plates 104, respectively, and traveling wheels 108 capable of supporting the machine body are provided.

When the in-pipe repair machine 101 having such a structure is used, the repair material 200 is wound around the outer peripheral surface of the rubber sleeve 102, and the rubber sleeve 102 is inserted into the pipe in a contracted state and traveled. The wheel 108 is grounded to the bottom surface of the pipe, and the wire 109 connected to the pulling member 107 is pulled from the ground in a desired direction to position the repair device 101 in the pipe at the defective portion of the pipe.

When air is supplied into the rubber sleeve 102 from the ground, the entire rubber sleeve 102 swells and the outer peripheral surface of the entire rubber sleeve 102 is uniformly pressed along the inner peripheral surface of the pipe, so that the repair material 200 is piped. Is pressed against the inner surface of the. Further, when power is supplied to the ceramic heater 106 with the swelling of the rubber sleeve 102, the ceramic heater 10
The entire rubber sleeve 102 is heated by the heat generated by 6, and the repair material 200 is thermally cured by this, so that the inner peripheral surface of the pipe is
It is firmly fixed.

[0012]

By the way, when the in-pipe repair machine constructed as described above is to be inserted into the pipe, it is first inserted into the manhole from the ground and then into the pipe.

The manhole has various shapes and sizes, but generally, the manhole has a shape as shown in FIG. The manhole 300 has a relatively large space inside, but the entrance 30 is open to the ground.
1 is a size that one person can enter, and is usually formed with a diameter D of about 600 mm.

Therefore, the outer diameter of the in-pipe repair machine is restricted by the diameter D of the inlet portion 301 of the manhole 300, and needs to be smaller than the diameter D of the manhole inlet portion 301.

Therefore, in the conventional in-pipe repair machine, the inner diameter of the pipe to be repaired is the manhole inlet portion 301.
There is a problem that it cannot be used for a pipe having a diameter larger than D.

The present invention has been made to solve the above problems, and provides an in-pipe repair machine which can be used for a large-diameter pipe whose inner diameter is larger than the diameter of the manhole inlet. The purpose is to

[0017]

In order to solve the above-mentioned problems, the invention of claim 1 provides a predetermined repair material on the outer periphery of an elastic rubber sleeve surrounding a main body so as to be swollen and contracted. After wrapping and inserting into the pipe in this state and positioning it at the required failure site, the rubber sleeve is bulged by the air sent from the ground, and the bulging of the rubber sleeve causes the repair material to wrap inside the pipe. In a pipe repair machine that presses against the peripheral surface to repair a faulty part, a predetermined number of rubber attachments whose maximum circumferential dimension is smaller than the diameter of the manhole inlet part are formed by dividing the rubber sleeve in the circumferential direction. Then, these rubber attachments are attached to the main body so that they can be removed, and a cylindrical rubber sleeve is formed with this predetermined number of rubber attachments attached to the main body. Characterized in that it was.

[0018]

According to the first aspect of the present invention, the main body and the predetermined number of rubber attachments are disassembled and inserted into the manhole, and the rubber attachments are attached to the main body in the manhole to assemble an in-pipe repair machine.

Then, the repair material is wound around the outer circumference of the rubber sleeve formed of each rubber attachment and inserted into the pipe.

In the machine body, with the rubber sleeve not bulging,
The wire is supported by traveling wheels provided in front of and behind it, and freely travels in the pipe by pulling a wire connected to a pulling metal from the ground in a desired direction.

When the running is stopped at a predetermined position in the pipe and the rubber sleeve is bulged by air feeding from the ground,
The repair material is pressed against the inner peripheral surface of the pipe, and at the same time the rubber sleeve is heated by the heat generated by the ceramic heater, the thermosetting adhesive impregnated in the repair material is rapidly cured, and it is firmly fixed to the inner periphery of the pipe. .

Therefore, even a large-diameter pipe having an inner diameter larger than the diameter of the manhole entrance can be easily repaired.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view showing a state where an in-pipe repair machine according to an embodiment of the present invention is inserted into a pipe, and FIG. 2 is a vertical section showing a state where a rubber sleeve of the in-pipe repair machine of FIG. 1 is expanded. FIG. 3 is a plan view, and FIGS. 3 to 9 are views corresponding to a cross section taken along the line AA of FIG. FIG. 10 is a perspective view showing a rubber attachment of the in-pipe repair machine of FIG. 1. 11 is shown in FIG.
The cross-sectional view of the rubber attachment shown in FIG. FIG. 12 shows FIG.
The exploded perspective view of the rubber attachment of No. 0. FIG. 13 is a cross-sectional view showing the main body of the in-pipe repair machine of FIG.

In FIG. 1, a pipe 1 is a ceramic pipe, a fume pipe, an ENVI pipe, or the like, and an in-pipe repairing machine 2 has an outer diameter capable of entering the pipe 1.

The in-pipe repair machine 2 according to the present invention comprises a main body 3 and
A predetermined number of rubber attachments 4 that can be attached to and removed from the main body 3 are formed. With the predetermined number of rubber attachments 4 attached to the main body 3, the rubber attachments 4 form a cylindrical rubber sleeve 5. It is like this. In other words, the rubber attachment 4 is formed with the rubber sleeve 5 divided into a predetermined number.

The number of the rubber attachments 4 is as shown in FIG.
As shown in FIG. 9, it is determined according to the diameter d of the rubber sleeve 5 formed in a cylindrical shape and divided into three or more pieces. By doing so, the rubber attachment 4 can be formed such that the maximum dimension a in the circumferential direction thereof is smaller than the diameter D of the manhole inlet portion 301, for example, 600 mm.

FIG. 3 shows a case where a rubber sleeve 5 having a diameter d = 600 mm is equally divided into three rubber attachments 4. In this case, the maximum circumferential dimension a of the rubber attachment 4 is 43.3 mm. Has become.

FIG. 4 shows a case where a rubber sleeve 5 having a diameter d = 700 mm is equally divided into four rubber attachments 4. In this case, the maximum dimension a in the circumferential direction of the rubber attachment 4 is 42.43 mm. Become.

FIG. 5 shows a case where a rubber sleeve 5 having a diameter d = 800 mm is equally divided into four rubber attachments 4. In this case, the maximum dimension a in the circumferential direction of the rubber attachment 4 is 49.5 mm. .

FIG. 6 shows a case where the rubber sleeve 5 having a diameter d = 900 mm is equally divided into six rubber attachments 4. In this case, the maximum dimension a in the circumferential direction of the rubber attachment 4 is 40 mm.

FIG. 7 shows a case in which a rubber sleeve 5 having a diameter d = 1000 mm is equally divided into six rubber attachments 4. In this case, the maximum circumferential dimension a of the rubber attachment 4 is 49.5 mm. Become.

FIG. 8 shows a case where the rubber sleeve 5 having a diameter d = 1100 mm is equally divided into six rubber attachments 4. In this case, the maximum dimension a in the circumferential direction of the rubber attachment 4 is 50 mm.

FIG. 9 shows a case where a rubber sleeve 5 having a diameter d = 1200 mm is equally divided into eight rubber attachments 4. In this case, the maximum dimension a in the circumferential direction of the rubber attachment 4 is 42.14 mm. Become.

A polygonal surface corresponding to the number of rubber attachments 4 is formed on the outer periphery of the main body 3, and this surface is used as a mounting surface for the rubber attachments 4.

An embodiment of the in-pipe repair machine 2 according to the present invention,
This will be specifically described with reference to FIGS. 1, 2, 4, and 10 to 13. In this embodiment, as shown in FIG.
This shows a case where the rubber sleeve 5 of 700 mm is equally divided into four rubber attachments 4.

As shown in FIG. 13, the main body 3 has a square cross section having four mounting surfaces 6 on the outer periphery thereof, and a drain hole 7 is provided at the center thereof. Each mounting surface 6 is integrally provided with a pair of parallel support rails 8 extending in the axial direction.

The main body 3 is provided with an air passage 9 connected to an air compressor mounted on an unillustrated construction work vehicle installed on the ground. The air passage 9 communicates with the hollow portion of each rubber attachment 4. Has been done. Further, the main body 3 is provided with a connection port 11 for an electric wire cord that is connected to a ceramic heater 10 provided in each rubber attachment 4. As shown in FIGS. 10 to 12, the rubber attachment 4 sandwiches the peripheral edge portion of the elastic rubber body 12 between the support plate 13 and the mounting plate 14, and fixes the airtight state by the set screw 15. Further, holding plates 16 and 17 are provided on both axial side surfaces and both front and rear end surfaces.

In this way, the inside of the rubber attachment 4 is kept airtight, and air is supplied from the air compressor on the ground to the air passage 9 of the main body 3 provided so as to communicate with the inside of the rubber attachment 4. As a result, the rubber body 12 expands in the circumferential direction.

A ceramic heater 10 is provided in the rubber attachment 4, and the ceramic heater 1
The heat generation of 0 heats the entire rubber body 12.

The mounting plate 14 is integrally provided with a pair of parallel mounting rails 18 which are detachably engaged with the support rails 8 provided on the mounting surface 6 of the main body 3.

Of the four rubber attachments 4, the rubber attachment 4 mounted on the lower mounting surface 6 of the main body 3 has a pair of traveling wheels 19 capable of supporting the body on front and rear holding plates 17, and a towing metal fitting 20. Is installed.

Repair material 40 wrapped around the rubber sleeve 5
Is made of a stretchable material with a glass cloth layer on the outer surface and a nonwoven fabric on the inner surface. Before the construction, repair the thermosetting adhesive containing the thermosetting agent in the FRP agent. It is used by impregnating the entire material 40.

Next, a method of using the in-pipe repair machine according to the above embodiment will be described.

First of all, when using this in-pipe repair machine 2, the area around the repaired portion in the pipe 1 is washed with high-pressure water in advance, and a TV camera is inserted into the pipe 1 to put the defective portion on the ground. Confirm by the CRT of the installed TV camera car (not shown).

Next, the main body 3 and the rubber attachment 4 are individually installed from the manhole inlet 301 to the manhole 300.
Insert inside.

Then, in the manhole 300, the rubber attachment 4 having the traveling wheels 19 and the traction metal 20 is attached to the lower mounting surface 6 of the main body 3, and the mounting rail 18 is engaged with the support rail 8 of the main body 3. In the same manner, the other three rubber attachments 4 are attached to the upper surface of the main body 3 and the attachment surfaces 6 on both left and right sides to assemble the in-pipe repair machine 2.

A repair material 4 in which a thermosetting adhesive is impregnated on the outer circumference of the rubber sleeve 5 of the assembled in-pipe repair machine 2.
Wrap 0.

Then, the in-pipe repair machine 2 is inserted into the pipe 1 in a state where the rubber sleeve 5 is contracted, the traveling wheels 19 are grounded to the bottom surface of the pipe 1, and the wire 21 connected to the pulling fitting 20 is desired from the ground. By pulling in the direction, the in-pipe repair machine 2 is located at the defective portion of the pipe 1.

Then, when air is supplied from the air compressor on the ground into the hollow portion of the rubber sleeve 5 with the in-pipe repairing machine 2 positioned at the defective portion in the pipe 1, as shown in FIG. The entire body bulges in the circumferential direction, the outer peripheral surface of the entire rubber sleeve 5 is uniformly pressed along the inner peripheral surface of the tube 1, and the repair material 40 is pressed against the inner peripheral surface of the tube 1. At this time, the traveling wheels 19 are in a state of floating from the bottom surface of the pipe 1.

Further, as the rubber sleeve 5 expands, power is supplied to the ceramic heater 10 to heat the ceramic heater 10 to heat the entire rubber sleeve 5,
As a result, the adhesive impregnated in the repair material 40 is thermally cured,
The repair material 40 is firmly fixed to the inner peripheral surface of the pipe 1.

In this way, the repair material 4 is attached to the inner peripheral surface of the pipe 1.
After fixing 0, the power supply to the ceramic heater 10 is stopped, the heat generation of the ceramic heater 10 is stopped, and then the rubber sleeve 5 is separated from the repair material 40 by extracting the air from the rubber sleeve 5. When the number 5 is reduced, the traveling wheel 19 of the in-pipe repair machine 2 comes into contact with the bottom surface of the pipe 1 and is re-runnable by pulling the wire 21.

When the repair work inside the pipe 1 is completed, the rubber attachment 4 is removed from the main body 3 in the manhole 300, and the main body 3 and the rubber attachment 4 are disassembled.
Individually take them out from the manhole entrance 301 to the ground.

Therefore, the in-pipe repair machine 2 of the present invention can also be used for repairing a large-diameter pipe having an inner diameter larger than the diameter D of the manhole inlet 301.

[0055]

As is apparent from the above description, according to the invention of claim 1, the main body and the rubber attachment can be attached and detached, and further, the maximum dimension in the circumferential direction of the rubber attachment can be set to the manhole inlet portion. Since it is divided into a predetermined number so that the diameter is smaller than the diameter, the main body and the rubber attachment can be individually inserted into the manhole, and these can be mounted inside the manhole to assemble the in-pipe repair machine.

Therefore, it can be used for a large-diameter pipe whose inner diameter is larger than the diameter of the manhole inlet.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state where an in-pipe repair machine according to an embodiment of the present invention is inserted into a pipe.

FIG. 2 is a vertical cross-sectional view showing a state where a rubber sleeve of the in-pipe repair machine of FIG. 1 is expanded.

FIG. 3 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of a rubber sleeve.

FIG. 4 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of a rubber sleeve.

FIG. 5 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of the rubber sleeve.

FIG. 6 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of a rubber sleeve.

FIG. 7 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of the rubber sleeve.

FIG. 8 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of the rubber sleeve.

FIG. 9 is a view corresponding to a cross section taken along the line AA of FIG. 1 showing a divided form of the rubber sleeve.

10 is a perspective view showing a rubber attachment of the in-pipe repair machine of FIG. 1. FIG.

11 is a cross-sectional view of the rubber attachment shown in FIG.

12 is an exploded perspective view of the rubber attachment of FIG.

FIG. 13 is a cross-sectional view showing the main body of the in-pipe repair machine of FIG.

FIG. 14 is a vertical sectional view showing an example of a manhole.

FIG. 15 is a vertical sectional view of an in-pipe repair machine according to a conventional example.

[Explanation of symbols]

 1 Pipe 2 In-pipe Repair Machine 3 Main Body 4 Rubber Attachment 5 Rubber Sleeve 6 Mounting Surface 8 Support Rail 10 Ceramic Heater 12 Rubber Body 14 Mounting Plate 18 Mounting Rail 19 Running Wheel 20 Traction Metal Fitting

Claims (1)

[Claims] 1. A predetermined repair material is wrapped around the outer circumference of an elastic rubber sleeve that is fixed so as to bulge and shrink so as to surround the main body, and insert it into the pipe in this state to locate it at the required failure site. After that, the rubber sleeve is swelled by the air sent from the ground, and the swelling of the rubber sleeve presses the repair material against the inner peripheral surface of the pipe to repair a defective portion. With the sleeve divided in the circumferential direction, a certain number of rubber attachments whose maximum circumferential dimension is smaller than the diameter of the manhole inlet are formed, and these rubber attachments are attached to the main body and are detachably provided. An in-pipe repair machine, characterized in that a cylindrical rubber sleeve is formed with the rubber attachment of 1. attached to the main body.