JPH08170786A - Repairing equipment of inner surface of large diameter conduit line - Google Patents

Abstract

PURPOSE: To easily and surely repair the inner surface of a large diameter conduit line by fitting a repairing material no a tightly pressing plate having a shape to match the shape in the piping through an attaching rubber plate, pressing the pressing plate against the inner surface of the conduit line by a jack, and tightly pressing the repairing material. CONSTITUTION: An attaching rubber plate 15 is installed on the outer circumference of a pressing plate 12, and a repairing material of the size suitable for the size of the damage in the conduit line is attached on the attaching rubber plate 15. A repairing device is advanced in the conduit line to be repaired, a jack 16 is extended, the repairing material is tightly pressed against the inner surface of the conduit line, and the damage is repaired through solidification. When the attaching is completed, the attaching rubber plate 15 is removed, and a pin 19 at the lower part of a holder 14 is removed. The holder 14 and the pressing plate 12 are turned in the arrow direction to be folded. Then, the jack 16 and a supporting table 18 are removed and taken out of a manhole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for repairing cracks, holes, etc. generated in a large-diameter conduit from the inner surface of the conduit.

[0002]

2. Description of the Related Art Conventionally, when a crack, a hole or the like is opened in a conduit or a small sewer pipe buried in the ground and water leakage occurs, excavation is performed from the surface of the ground to find a defective portion, and It was repaired or replaced. In addition, recently, a technology has been developed to detect a defective part from the inner surface by inserting a small TV camera into the conduit through a manhole. With this technology, it is possible to detect a defective part and inspect the defective condition. , Repair technology from the inside of the pipeline has also been developed. As an example, as shown in FIG. 1, a cylindrical body (wheel tube) 1 (shown in FIG. 2) whose both ends are closed is provided with a cylindrical sliding member 4 on the circumference of both ends. Insert into the conduit 9. Figure 2
As shown in FIG. 1, a rubber tube 2 is loosely fitted over the outer circumference of the cylindrical body 1, and both ends of the rubber tube are tightly fixed to the cylindrical body 1 by tightening tools 5 as shown in FIG. . A repair material 3 impregnated with a curable resin binder is loosely wrapped around the rubber tube 2. This device is inserted up to the defective portion of the pipe line 9. At that time, one end of the tow rope is attached to the tow ring 8 of the front end portion 6 of the cylindrical body, the air hose 7 is connected to the air hose connecting pipe at the rear end, and the whole tow rope is pulled to the defective portion or towed. If the rope cannot be used, attach the push-fitting mouthpiece to the air hose connecting pipe and push the device to the defective part. When the rubber tube 2 is inflated so as to contact the inner surface of the pipe 9 and pressurize the inner surface by supplying air of a required pressure with the air hose 7, the repair material 3 wound on the outer side is the rubber tube 2 and the tube. It is pressed against the inner surface of the passage 9 and comes into close contact with it. The bulging state of the rubber tube 2 at this time is as shown in FIG.
After going through (c), it becomes a sufficiently expanded state of (d), and by leaving the repair material 3 pressed against the inner surface of this conduit 9 for a certain period of time, the repair material hardens and it fits perfectly on the inner surface of the conduit. It will be in an attached state. After the complete curing, the air in the cylindrical body 1 is evacuated and the device is taken out from the manhole to complete the repair. This method is generally called EPR (Engineering P
It is called the lastic Pipe Repair method.

[0003]

The expansion / compression type repair method by the EPR method described above is a conduit repair method which is very simple and has a good finish, but the repair device is integrally fixed. Therefore, when inserting the repair device into the pipe from the manhole, the sliding material may not be inserted into the manhole or the pipe line.
Similarly, because the pipe diameter becomes narrow, the sliding material is stuck and the device cannot be taken out.After injecting air into the repair device,
The air hose is often entangled with each other to form a knot, which causes inconvenience such as being unable to exhaust air after the repair material is brought into close contact with the device, or being unable to take out the device. And a large diameter, for example, a diameter of 600 mm or more, especially φ
A large device is preferable for pipes of 2000 mm or more, but such a large device has a manhole diameter of 600 m.
Since it is m, it can not be inserted from the manhole at all,
Conventionally, in a small device as described above, the repair material is crimped by inflating only the central portion of the device, and sufficient crimping cannot be performed. The current situation is that the laid ones are obstacles and cannot be satisfactorily repaired.

[0004]

As a result of intensive studies to solve the above problems, the present inventor has found that the above problems can be solved all at once by using a specific crimping plate and a simple means such as a jackie. The heading has arrived at the present invention. That is, the present invention comprises (1) a crimping plate having a shape that matches the shape of the inside of a pipeline, a jackie, and a support base. A jackie is mounted on the support base, and a crimping plate is mounted on the jackie. (2) A repair device for the inner surface of a large-diameter pipe, wherein a pressure-bonded rubber plate is laid on the outer periphery of the pressure-bonded rubber plate, a repair material is attached on the pressure-bonded rubber plate, and the repair material is pressure-bonded by extension of a jackie. It consists of a crimping plate and a jackie having a shape that matches the shape of the inside of the road, and crimping plates are attached to the top and bottom (or left and right) of the jackie, and crimping rubber plates are laid on the outer periphery of the crimping plate, respectively. A repairing device for the inner surface of a large-diameter pipe, characterized in that a repairing material is attached to and a compression of the repairing material is performed by extension of a jackie. (3) The crimping plate is foldable (1) or (2) The repair device described above, (4) the repair device according to (1) or (2) above, wherein the crimp plate can be assembled and disassembled, and (5) the pressure-bonded rubber plate has a shape similar to that of the crimp plate. Repair device according to (1) or (2) above, which is a pressure-bondable rubber plate that can be inflated, (6) Repair according to (5), wherein the pressure-bondable rubber plate that can be inflated by air is in the shape of a bag. apparatus,
(7) The present invention relates to the repair device according to (1) or (2), wherein the jackie is selected from a hydraulic type, an electric type, and a manual type.

The crimping plate of the apparatus of the present invention is a crimping plate having a shape corresponding to the shape of the pipe to be repaired, for example, a trapezoidal shape for a box goverard or a circular pressure bonding plate for a circular tubular body. be able to. The crimp plate can be made of metal or reinforced plastic. The crimping plate can be of a foldable structure or can be disassembled and assembled, which makes it extremely easy to insert the crimping plate into a conduit through a manhole. In the center of the crimping plate, a column made of a metal pipe that supports the crimping plate and fits with the jackie is provided. In addition, a holder for supporting both sides of the crimping plate is provided at the lower part of the column, and the crimping plate is fixed by this. This holder can be separated at the lower part of the column and both sides of the crimping plate, and can be folded or disassembled. The jackie may be any of a manual type, a hydraulic type, and an electric type. The upper part of the jackie is connected to the support of the crimping plate, and the lower part of the jackie is connected to the support base. It is also possible to repair the upper and lower sides or the left and right sides of the conduit at the same time. In that case, the columns of the crimping plate are connected to the upper and lower sides (left and right) of the jackie. A pressure-bonding rubber plate is laid on the outer periphery of the pressure-bonding plate. As a result, the repair material can be firmly pressure-bonded to the repaired portion in the pipeline. Any pressure-bonding rubber can be used as long as it can firmly bond the repair material, and it is made of various natural and synthetic rubbers, and elastic ones are used.

The pressure-bonded rubber plate may be one which can be inflated by air, and various natural rubbers and synthetic rubbers having a shape corresponding to the surface shape of the pressure-bonded plate, for example, trapezoidal or circular, or their reinforced rubbers are used as raw materials. It can be in the form of a bag. A convex air-bleeding linear body is provided on the surface of the bag, which is the pressure-bonded rubber plate, so that the air in the repair material can be easily escaped when the repair material is pressure-bonded. With this pressure-bonded rubber plate, the repair material can be reliably and easily pressure-bonded to the damaged portion in the conduit. This pressure-bonded rubber plate is installed on the pressure-bonded plate, and its length and width can be appropriately selected to be the same as the pressure-bonded plate or a size corresponding to the size of damage to be repaired.

The repair material used in the present invention is glass fiber,
In addition, carbon fiber, Kepler fiber, and other reinforcing materials are impregnated with resin binders that are engineered plastic resins such as unsaturated polyester resins, epoxy resins, emulsion resins, etc. This is a synthetic resin product that has a constant strength with respect to directionality. Various repair materials can be combined depending on the size and strength of the target defect. This repair material is used by stacking one or more sheets, and the number of sheets is adjusted depending on the size of the defect. An example thereof is one in which three ordinary glass cloths and two true glass cloths (waterproof mats) are alternately stacked and used as one set.

Referring to the drawings, FIGS. 3 to 11 are drawings relating to a large-diameter conduit repair device of the present invention, and FIG. 3 shows a case where a manual jackie of the large-diameter conduit repair device of the present invention is used. FIG. 4 is a schematic side view when a hydraulic jackie (hydraulic cylinder) of the large-diameter pipe repair device of the present invention is used, and FIG. 5 is a manual view of the large-diameter pipe repair device of the present invention. FIG. 6 is a schematic side view for simultaneously repairing the upper and lower sides (left and right) in the pipe line when a jackpot is used, FIG. 6 is a cross-sectional schematic diagram of the attachment of the crimp plate and the jackie of the repair device of the present invention, and FIG. FIG. 8 is a plan view of the crimping plate, FIG. 8 is a schematic view of the back surface of the crimping plate which can be disassembled and assembled, and FIG. 9 is a side view of the crimping plate assembled by using a column and a holder.

In the figure, reference numeral 12 is a crimping plate, which is supported by a column 13 at its center and a holder 14 at its side. A pressure bonding rubber plate 15 is laid on the outer periphery of the pressure bonding plate 12,
The repair material attached thereon can be pressure-bonded easily and reliably. The crimping plate 12 is connected to the jackie 16 at its central portion by a column 13. The jackie is further connected to the support base 18. 3 shows a repair device using a manual jackie, and FIG. 4 shows a repair device using a power cylinder. Further, FIG. 5 shows a repair device for simultaneously repairing the top and bottom (or left and right) of the inner surface of the pipeline, and the crimping plate is connected to the top and bottom (right and left) of the manual jackie 16.

The repair device shown in FIGS. 3 to 5 is an example in which the crimping plate is foldable, and as shown in FIGS. 3 and 5, the pin 19 at the connecting portion of the holder 14 with the crimping plate 12 is used.
By removing the, the crimping plate is folded, and the size of the device itself is reduced so that the device can be easily inserted and removed from the manhole. 7 and 8 are a plan view of the crimping plate 12 and a plan view of the back surface of the crimping plate 12, respectively. As shown in FIG. 8, the crimping plate can be assembled and disassembled. It is assembled from 5 blocks of C, D and E, which are disassembled at the time of insertion from the manhole and assembled at the repair place in the pipeline. In that case, the holder 14 can be fixed with a pin at the position shown in FIG. A trapezoidal crimping plate as shown in FIGS. 3 to 9 is used for repairing the box goverard, but the crimping plate can be formed into a circular shape or the like depending on the shape in the conduit. FIG. 10 is a schematic plan view of a pressure-bonding rubber plate 15 that can be inflated with air, and FIG. 11 is a schematic side view of the pressure-bonding plate 15 that can be expanded with air. A convex air-bleeding linear body 21 is provided on the surface of the pressure-bonded rubber plate, which allows air in the repair material to easily escape during pressure-bonding, resulting in a good finish. The pressure-bonding rubber plate 15 may be made of a sponge rubber plate or the like made of various natural or synthetic rubbers, and has a bag-like shape (for example, trapezoidal or circular) conforming to the surface shape of the pressure-bonding plate. However, the repair material can be pressure-bonded by inflating it with air, so that the damage in the pipeline can be reliably repaired. The size of this pressure-bonded rubber plate can be appropriately selected, but for example, it has the same length and width as the pressure-bonded plate,
The thickness can be appropriately selected, for example, in the case of a trapezoid, it can be 30 to 300 mm when inflated with air, and in the case of a circular shape, a thickness up to about half the diameter can be selected. For example, if the diameter is 2000 mm, the thickness up to about 1000 mm can be selected.

[0011]

The large-diameter conduit repair device of the present invention is capable of folding or disassembling and assembling, and is capable of repairing the inside of a sewer pipe or a conduit provided with a telephone line or the like having a diameter of 600 mm or more, particularly 2000 mm or more. Can be performed easily and reliably without any obstacles

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the repairing device of the present invention will be described more specifically with reference to the drawings, but this does not limit the present invention. Example 1 For repairing the inner surface of a box bag guard having a size of 2400 mm, a trapezoidal crimping plate 12 (length 2400 mm width 800
mm) has its center part at the pillar 13 (diameter φ75 mm, length 6)
00mm), the side part is the holder 14 (width 38mm, length 8)
00 mm) and fixed. The tip of the column 13 is a manual jackie 16 (1110 mm wide, 920 mm long)
And connected to the central part of Jackie. The other central portion of the jackie 16 has a support base 18 (height 730 mm, base width 80
0 mm) (Fig. 3). A pressure-bonding rubber plate 15 is laid on the outer periphery of the pressure-bonding plate 12.
On top of (about the same size as the crimping plate), a fluffy glass of the same size as three glass fibers of an appropriate size (for example, 700 mm in width and 2400 mm in length) according to the size of the scratch in the pipeline. A repair material impregnated with a curable resin is attached to the two layers, the jackie 16 is extended, the repair material is pressure-bonded to the inner surface of the conduit, and then cured to be cured. When the pressure bonding of the repair material is completed, the pressure bonding rubber plate 15 is removed and the pin 19 at the bottom of the holder 14 is removed, so that the holder 14 and the pressure bonding plate 12 rotate in the direction of the arrow shown in FIG. Next, the jackie 16 and the support base 18 are removed and taken out from the manhole. A power cylinder can be used instead of a manual jackie (Figure 4). Even in this case, there is no difference in operation from FIG.

Embodiment 2 In a box gabbert, if there are repaired parts on the left and right or at two lower parts, a trapezoidal crimping plate 12 is also used for the column 1.
3 and the holder 14 connect to the manual jackie 16 at the position of the pin 19 vertically (or left and right). A pressure-bonding rubber plate 15 is laid on the outer periphery of each pressure-bonding plate 12, and then a repair material is attached on the pressure-bonding rubber plate 15 according to the size of the damage to be repaired, and the manual jackie is extended and pressure-bonded. Holder 1 when the repair material is crimped
By removing the pin 19 at the bottom of 4, the crimp plate 1
2 can be rotated in the direction of the arrow and can be folded. Then, the connection with the manual jackie 16 is removed and the disassembly is performed. Each of the disassembled parts can be easily taken out from the manhole.

Embodiment 3 The crimping plate 12 is constructed by assembling blocks A, B, C, D and E as shown in FIG. As shown in FIG. 9, the crimping plate 12 is fixed by a central column 13 and a holder 14, and is connected to the jackie 16 and the support base 18 as in the first embodiment. A repair material is mounted on the pressure-bonded rubber plate 15 on the pressure-bonded plate 12, and the repaired part is pressure-bonded for repair. After crimping, the crimping plate 12 removes the pin 20, and A, B, C, D and E
Is broken into blocks. With this device, it is easy to repair the inside of a pipe with an ultra large diameter, for example φ2200mm or more.
The repair can be done safely and surely. If the cross-sectional shape of the tube is circular, it can be similarly repaired by making the crimping plate circular.

[0015]

Since the device of the present invention can be folded, disassembled, and assembled, it has a diameter of 600 mm or more, especially 2 mm.
It has an excellent effect that the repair of a conduit of 000 mm or more can be easily performed by an extremely simple operation, and in particular, the repair of a large electric conduit having a telephone line or the like therein can be performed very easily.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a conventional pipeline repair device.

FIG. 2 is a partially cutaway sectional view of a wheel tube of a conventional conduit repair device.

FIG. 3 is a schematic side view of a large-diameter in-pipe repair device using a manual jackie according to the present invention.

FIG. 4 is a schematic side view of a large-diameter in-pipe repair device using a power cylinder of the present invention.

FIG. 5 is a schematic side view of a large-diameter in-pipe repair device capable of simultaneously repairing a plurality of side surfaces according to the present invention.

FIG. 6 is a schematic side view of a crimping plate of the large-diameter conduit repair device of the present invention.

FIG. 7 is a plan view of a crimping plate of the large-diameter conduit repair device of the present invention.

FIG. 8 is a schematic plan view of the back surface of a crimping plate formed by combining a number of blocks in the large-diameter in-pipe repair device of the present invention.

FIG. 9 is a schematic side view of a crimping plate of the large-diameter conduit repair device of the present invention.

FIG. 10 is a schematic plan view of a pressure-bonded rubber plate that can be inflated with air according to the present invention.

FIG. 11 is a schematic side view of a pressure-bonded rubber plate that can be inflated with air according to the present invention.

[Explanation of symbols]

 1 Cylindrical Body 2 Rubber Tube 3 Repair Material 4 Sliding Material 5 Rubber Tube Tightening Tool 6 Cylindrical Body Front End 7 Air Hose 8 Towing Ring 9 Pipe Line 11 Large Diameter Pipe Repair Device 12 Crimping Plate 13 Strut 14 Holder 15 Crimping Rubber plate 16 Jackie 17 Handle 18 Support 19 Pin 20 Crimping plate assembly pin 21 Air bleeding wire

Claims (7)

[Claims] 1. A crimping plate having a shape conforming to the shape of the pipe, a jackie, and a support base. A jackie is mounted on the support base, a crimping plate is mounted on the jackie, and a crimp rubber is attached to the outer periphery of the crimp plate. A device for repairing the inner surface of a large-diameter conduit, wherein a plate is laid, a repair material is attached on the pressure-bonded rubber plate, and the repair material is pressure-bonded by extension of a jackie. 2. A crimping plate and a jackie having a shape conforming to the shape of the inside of the conduit, and crimping plates are attached to the top and bottom (or left and right) of the jackie, and crimping rubber plates are laid on the outer periphery of the crimping plate. A repairing device for an inner surface of a large-diameter pipe, wherein a repair material is attached on the pressure-bonded rubber plate, and the repair material is pressure-bonded by extension of a jackie. 3. The repair device according to claim 1, wherein the crimping plate is foldable. 4. The repair device according to claim 1, wherein the crimping plate can be assembled and disassembled. 5. The repair device according to claim 1, wherein the pressure-bonded rubber plate is a pressure-bonded rubber plate that has a shape similar to that of the pressure-bonded plate and can be inflated by air. 6. The repair device according to claim 5, wherein the pressure-bonded rubber plate that can be inflated by air is in the shape of a bag. 7. The repair device according to claim 1, wherein the jackie is selected from a hydraulic type, an electric type and a manual type.