JP4964015B2 - Photocuring method for photocurable lining material and photocuring system used for the method - Google Patents

Description

  The present invention relates to a photo-curing method for a lining material and a photo-curing system used for the method, and in particular, photo-curing of a photo-curable lining material that cures the lining material by irradiating light from the inside of the photo-curable resin lining material before curing. The present invention relates to a method and a photocuring system used in the method.

  The sewerage penetration rate in Japan is 67% on average, and in urban areas, it is close to 100%. Therefore, the construction of new sewer pipes has almost disappeared except in some areas, and the maintenance of old pipes has become important. The total length of sewage pipes is approximately 360,000 km, of which pipes that have exceeded the service life of 50 years are over 7000 km. In the future, it is expected to increase by several thousand kilometers per year.

  In general, pipes buried in the ground such as sewer pipes are subject to various deformations over the years since installation, such as cross-sectional deformation, connection disconnection, pipe cracks, and other aging phenomena. When such a situation occurs, there are problems that the flow force decreases and the amount of sewage treatment increases due to the infiltration of groundwater into the pipe.

  Under such various circumstances, the existing pipes need to be repaired at a predetermined time. As a repair technique for this existing pipe, a method of rehabilitating the existing pipe while leaving the ground unopened, that is, first of all, the existing photocurable tubular lining material is inverted by compressed air or by pulling in. Introduce into the tube. This tubular lining material is formed in a factory by impregnating a predetermined core with a reinforcing core material such as glass fiber. Next, compressed air is blown inside the lining material, the outer wall surface of the lining material is brought into close contact with the inner wall surface of the pipe, and then the resin is cured from the inner side of the lining pipe by a light irradiation device, and the impermeable lining is formed on the inner wall surface of the pipe A repair method is known in which a pipe is formed to rehabilitate an existing pipe.

  For example, in Patent Document 1, a flexible sleeve (tubular lining material) formed by encapsulating an ultraviolet curable resin layer containing an unsaturated polyester resin and styrene with an outer film and an inner film is introduced into an existing pipe. An existing pipe lining method is disclosed in which an uncured sleeve is irradiated with ultraviolet rays while the ultraviolet ray irradiating device is moved in the sleeve while being in close contact with the existing pipe inner wall and the resin is cured. And in the said patent document 1, the lining method of the existing pipe which excluded the danger of the fire which may occur during the hardening process by ultraviolet irradiation, the safety management apparatus of the lining operation | work by this method, and the light train for ultraviolet irradiation are disclosed. Yes.

JP-A-11-198230 (Patent No. 3005208)

  However, conventional photocuring apparatuses that irradiate ultraviolet rays, including the above-mentioned Patent Document 1, have the following problems.

  (I) The photocuring apparatus is configured to connect a large number (4 to 6) of lamps such as mercury lamps that emit ultraviolet light in series, and to move the connected body along the pipe. For example, a plurality of such mercury lamps with a rated power of 1 kW are used, so that the power consumption is large, and the ultraviolet lamp is large in size, so that the photocuring apparatus is also large.

  (Ii) In addition, the ultraviolet lamp has a low luminous efficiency of effective light with respect to the power consumption, as low as about 20%, the remaining 80% is dissipated as heat, and becomes high temperature of about 500 ° C. to 700 ° C. during lighting. Although the heat generated by the ultraviolet lamp is useful in that the lining material can be heated to an appropriate temperature, the heat generated from the curing reaction is further applied, and the temperature of the lining material rises more than necessary. As a result, there may be a situation where the quality of the lining material cannot be maintained, which causes a problem in the accuracy of the curing operation.

  (Iii) In the conventional light irradiation type lining method, the tubular lining material is irradiated with light of a predetermined wavelength range, and the curing reaction starts. , About 30 to 50 ° C. is necessary. If this temperature is not reached, the progress of the curing reaction is extremely slow and it is difficult to perform a rapid curing operation. However, the temperature of the existing pipes buried in the ground is generally about 15 ° C. to 18 ° C., which is lower when it is cold, and the tubular lining material itself introduced from the ground when it is cold is also lower. Yes. In order to efficiently cure the tubular lining material in contact with the existing pipe in such a situation, the surface temperature of the tubular lining material must be raised to the above-described appropriate temperature.

  Therefore, in actual construction, in order to speed up the curing process, an ultraviolet lamp having a large power, that is, a large wattage is often used. The intense light irradiated by this is first absorbed by the material and becomes thermal energy, which contributes to the temperature rise of the material. And when material temperature reaches to 40-50 degreeC, hardening reaction will start at a stretch. However, when the tubular lining material is heated in a short time by the irradiation of strong light from the high-power ultraviolet lamp as described above, and reaches the appropriate temperature for the curing reaction, the curing reaction proceeds rapidly thereafter. And since the curing reaction itself is a heat dissipation reaction, the temperature of the tubular lining material suddenly rises due to the heat of reaction and the strong energy of the irradiation light of the ultraviolet lamp after the start of curing. However, usually, the temperature may rise from 100 to 200 ° C. after 2 to 5 minutes from the start of light irradiation.

  However, when the temperature is 150 ° C. or higher, the performance of the tubular lining material after curing may be adversely affected, that is, the strength may be weakened, and the quality as a product may be deteriorated. As a technique for avoiding such a situation in the present situation, that is, a technique for avoiding an excessive rise in the tubular lining material, the irradiation time is adjusted while measuring the temperature of the inner surface of the tubular lining material. Control is in progress.

  At the same time, it is necessary to cool by constantly supplying cold air from the outside so that a resin component such as styrene evaporates into a gas due to a high temperature and does not cause a fire, and this cold air hits a high-temperature lamp. Further, since the lamp is cooled rapidly, there is a problem that the lamp is easily damaged.

  In order to eliminate the drawbacks of conventional ultraviolet lamps such as gallium lamps and mercury lamps, it is conceivable to use a light emitting diode capable of irradiating ultraviolet rays as light emitting means for irradiating light for photocuring. The light emitting diode has good light emission efficiency. For example, sufficient light emission power can be obtained with power consumption of 5 W to 20 W. In addition, there are various advantages such as simple structure, small size, strong vibration, long life, low failure probability, and low running cost.

  However, although the ultraviolet light emitting diode has high luminous efficiency, the heat generation temperature at the time of lighting is about 70 to 80 ° C., and the heating function for other objects is extremely small. Therefore, it is very difficult to heat the lining material to an appropriate temperature with a light-emitting diode that generates an extremely small amount of heat as compared with a conventional ultraviolet lamp, and as a result, a curing operation in a short time cannot be expected. Thus, when performing light curing using a light emitting diode, it takes time to prepare for the initial stage of light curing, and it is difficult to perform smooth light curing of a smooth tubular lining material. is expected.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a light-curable lining material that can take advantage of ultraviolet light-emitting diodes and can perform a curing operation quickly. It is providing the curing method and the photocuring system used for this method.

In order to solve the above problems, a photocuring method for a photocurable lining material according to claim 1 is:
Tubular lining material introducing step of introducing an uncured photo-curing tubular lining material so that its outer surface is along the inner wall of the existing pipe to be rehabilitated, and light irradiation from the inside of the introduced tubular lining material A photo-curing process for curing a lining material, wherein the photo-curing process is performed using a light-emitting diode, and the tube is used as a step preceding the photo-curing process. The lining material includes a lining material preheating step of raising the temperature of the tubular lining material to a temperature state in which a photocuring reaction by light irradiation of the light emitting diode becomes favorable.

  According to the above configuration, reduction of power consumption, downsizing of the light irradiation device, prevention of deterioration of the lining material due to excessive temperature rise, cancellation of complicated irradiation control for preventing deterioration of the lining material, etc. When an ultraviolet lamp is used, an effect that cannot be achieved can be obtained. And the prolongation of the curing operation time, which is a problem in the case of the ultraviolet irradiation light emitting diode, is solved by performing the preheating process as an operation preceding the photocuring process. Therefore, a good curing operation of the tubular lining material by the light emitting diode is ensured without increasing the curing operation time.

The photocuring method of the photocurable lining material according to claim 2 is:
Mobile light irradiation means in which the light-curing step is configured to be movable in the tubular lining material, and the light emitting diodes are arranged so that light can be irradiated to the entire inner wall of the tubular lining material. In the tubular lining material, and the lining material preheating step is performed at a forward position in the advancing direction at a predetermined interval from the location of the light emitting diode of the movable light irradiation means. A heating unit for heating is provided, and the heating is performed by the heat generated from the heating unit in the photocuring process using the light emitting diode.

  According to the above configuration, the preheating step for speeding up the photocuring work by the light emitting diode is simultaneously performed at the forward position in the traveling direction during the moving operation of the mobile light irradiation means for photocuring. Therefore, it is not necessary to perform a separate preheating process as a separate operation before the light curing operation using the light-emitting diodes, so that an efficient preheating operation is possible and the time required for the entire lining material curing operation may be prolonged. Nor.

The photocuring method of the photocurable lining material according to claim 3 is:
A lining material introduction means for introducing an uncured tubular lining material into an existing pipe so that an outer surface thereof is along the inner wall surface of the existing pipe to be rehabilitated, and light irradiation from the inside of the tubular lining material to cure the tubular lining material A photo-curing system for a photo-curable lining material, comprising: a light-emitting unit having a light-emitting unit for curing, wherein the light-irradiating unit is configured to be movable in the tubular lining material; A light emitting diode provided on the entire circumference of the inner wall of the tubular lining material so as to be capable of irradiating light, and provided in front of the light irradiation means in the moving direction during the photocuring operation, connected to the light irradiation means. And is configured to be movable in the tubular lining material together with the light irradiation means during the moving operation, and before the light irradiation position of the light irradiation means on the inner wall of the tubular lining material. Characterized in that a preheating means for heating the region.

  According to this structure, implementation of the photocuring method according to the first or second aspect can be achieved with a simple structure. That is, it has a moving light irradiation means equipped with a light emitting diode, and in addition to this, a preheating means for heating the tubular lining material in the forward direction of the light irradiation means, both during the movement of the light irradiation means While moving, the temperature condition of the tubular lining material is adjusted to a temperature suitable for photocuring by a light emitting diode. Thereby, speeding-up of the photocuring operation by the light emitting diode is achieved by a simple process.

A photocuring system for a photocurable lining material according to claim 4,
The light irradiation means is characterized in that a plurality of light emitting diodes are arranged and mounted on the outer surface of the movable body so that light is irradiated to the entire circumference of the inner wall of the tubular lining material. According to this configuration, since the light emitting means is provided with the plurality of light emitting diodes so that the entire inner wall of the tubular lining material is irradiated with light, the entire area of the tubular lining material during the movement of the light irradiating means. Proper curing of the is ensured.

A photocuring system for a photocurable lining material according to claim 5,
The moving main body of the light irradiating means is configured as a columnar body having a predetermined length extending in the moving direction, and the light emitting diode is mounted on the moving main body so as to be able to irradiate light outward at predetermined intervals. The light emitting diode mounting portion is configured to rotate around a rotation axis extending in the moving direction during movement during the photocuring operation.

  According to this configuration, the moving main body of the light irradiation means is formed in a column shape, and at least the light emitting diode mounting portion is configured to be automatically rotatable. Therefore, light irradiation to the inner wall of the tubular lining material is performed while each light-emitting diode makes a circular motion and draws a spiral movement locus. Thereby, light irradiation is performed more uniformly, and detailed considerations, such as the installation position of a light emitting diode, become unnecessary.

A photocuring system for a photocurable lining material according to claim 6,
The light irradiation means and / or the preheating means include self-propelled means that can automatically move within the tubular lining material without being pulled. According to this configuration, it is not necessary to install a pulling device or the like for pulling and moving the light irradiation means and the preheating means within the tubular lining material, and simplification of the photocuring work is achieved.

  According to the photocuring method and the photocuring system of the photocurable lining material according to the present invention, it is possible to reliably eliminate the prolonged curing work time, which is a problem when performing photocuring using a light emitting diode. The lining material can be hardened by taking full advantage of the above. That is, by performing the preheating step as an operation preceding the photocuring step, a good curing operation of the tubular lining material by the light emitting diode is ensured without increasing the curing operation time. As a result, various effects on conventional technologies such as reduction of power consumption and manufacturing cost, downsizing of equipment, prevention of deterioration of lining material during curing work, and simplification of control for preventing deterioration of lining material. Can be demonstrated.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present embodiment, a case where repair of a sewage main pipe between manholes is performed using a tubular lining material will be described as an example. As shown in FIG. 1, the main pipe 100 which is an existing pipe to be repaired is formed between vertical shafts 200 and 300 called so-called manholes. In carrying out repairs, as a preparatory step, a water stop member 101 is installed upstream of the manhole 200 to block the upstream side of the main pipe 100, and is a general drainage introduction path existing in the middle of the main pipe 100. The water stop member 401 is also installed on the upstream side of the attachment pipe 500 extending from the 400 and the trough 400.

  FIG. 1 shows an example of the process of introducing the tubular lining material 10 in such a repair operation of the sewage main pipe 100. As shown in the drawing, the uncured tubular lining material 10 is not yet expanded in a pipe shape, but is drawn into the sewer main pipe 100 in a slightly flat shape. This pull-in operation is performed by pulling the tubular lining material 10 stored in the state where it is wound around the storage unit 12 on the manhole 200 side by the pulling operation of the pulling unit 14 installed on the ground portion on the manhole 300 side. 100.

  A pulling rope 17 attached to the pulling portion 14 is fixed to the tip portion 10 a of the tubular lining material 10, and the pulling rope 16 pulls the tubular lining material 10 from the manhole 200 side to the manhole 300 side into the sewer main. It is drawn through the tube 100. In order to make this drawing operation smoother, rollers 16-1, 16-2, 16-3, 16-4 and the like are appropriately installed at necessary places.

  The tubular lining material 10 is formed of, for example, glass fiber, felt (nonwoven fabric), or a combination of both, and impregnated with resin. As the impregnating resin, a resin that can be cured by light by mixing a photoinitiator into a resin such as vinylester resin or unsaturated polyester resin is used. In addition, since the surface of the uncured tubular lining material 10 has adhesiveness, an outer film and an inner film are respectively attached to the front and back surfaces of the tubular lining material in order to avoid adhesion to other objects. ing.

  FIG. 2 shows another example of the operation of introducing the tubular lining material 10 into the sewer main 100. This introduction method does not draw the tubular lining material 10 as it is, but as shown in the figure. This is a reversal introduction that pushes 10 into the sewer main 100 while reversing 10 from the front end side.

  The tubular lining material 10 is introduced from the manhole 200 through the space between the two rollers 17-1 and 17-2, and is sequentially fed out from a feeding mechanism for the tubular lining material 10 (not shown) installed on the ground near the manhole 200. , Through the manhole 200 and inserted into the sewer main 100. As shown in the figure, a cover pipe 600 hermetically covers the entrance opening of the sewer main 100 to the roller 17 and the feed mechanism for the tubular lining material 10 on the ground (not shown). Then, by pushing pressurized air (hot air or the like) into the sewer main pipe 100 from the inside of the cover pipe 600, the tubular lining material 10 is pushed in reverse. That is, as shown in the figure, the air for pushing (arrow 900) is blown into the inner part which is reversed and thereby the tubular lining material 10 is gradually pushed into the main pipe 100 while being reversed.

  The inverted tubular lining material 12 is inserted while being turned upside down. The pressure of the pressurized air sent to the inside of the tubular lining material 10 is, for example, about 0.03 to 0.07 MPa. The cover pipe 600 is hermetically installed up to the opening on the manhole 100 side of the sewer main pipe 10 for feeding the pressurized air, and the tubular lining material 10 is introduced through the cover pipe 600. .

  FIG. 3 shows a shaping operation of the tubular lining material 10 after the pulling or pushing operation of FIGS. 1 and 2 is completed. That is, the uncured tubular lining material 10 needs to be placed so as to be as close as possible to the inner wall of the sewer main 100, and the diameter expansion / shaping work for this purpose is performed. As shown in the figure, this is performed by blowing shaping air (arrow 700) into the uncured tubular lining material 10 introduced into the main pipe 100. At both ends of the installed tubular lining material 10, end packers 18-and 18-2 having necessary through holes are respectively attached, and the air of the end packer 18-1 at the end on the manhole 200 side is attached. Air is blown from the introduction port 18a. Due to the blowing of air, the pressure in the tubular lining material 10 increases, and the tubular lining material 10 is shaped along the inner wall of the sewer main 100. The shaping air 700 is blown in by sending compressed air through the air supply pipe 22 from a work vehicle 25 equipped with the pump 20 disposed on the ground.

  The shaping operation by expanding the diameter of the tubular lining material 10 is not limited to the case where the tubular lining material 10 is installed by the above-described drawing operation of FIG. It can also be done when installed inside. In the case of the reverse push-in operation, the tubular lining material 10 has already been shaped into a tubular shape to some extent as compared with the case of the pull-in operation in FIG. 1, so the shaping air blowing operation in FIG. That's enough.

  What is characteristic in the method of the present invention is that the photocuring step of curing the tubular lining material 10 by light irradiation from the inside of the introduced tubular lining material 10 is performed using a light emitting diode, and this photocuring step. As the preceding step, a lining material preheating step is performed in which the tubular lining material 10 is heated to an appropriate temperature so that the tubular lining material 10 performs a good photocuring reaction by light irradiation of the light emitting diode.

  FIG. 4 shows a photocuring apparatus 20 and a preheating apparatus 30 according to a preferred embodiment for performing a photocuring process and a preheating process. As shown in the figure, the light irradiating part for photocuring is not a conventional ultraviolet lamp, but a light irradiating device 20 having a light emitting diode 22 on the outer surface of a columnar (or cylindrical) main body. is there. The light irradiation device 20 is provided with a plurality of light emitting diodes 22 (for example, 20 to 60), and is configured to be able to irradiate light outward from the light irradiation device 20.

  In the present embodiment, for example, a light emitting diode 22 having a rated power of about 5 to 20 W is used, and is adjusted to emit light having a wavelength of 300 to 450 nm in a region extending between visible light and an ultraviolet region. . This is because the thickness of the tubular lining material 10 is variously set between 3 mm and 20 mm depending on conditions such as the configuration of the existing pipe to be repaired and the embedment depth, and is 400 nm or less in order to ensure light penetration. This includes not only pure ultraviolet rays having a wavelength of 1, but also light rays in the visible light region with good penetrability. The light irradiation device 20 may be configured as a so-called lamp train by connecting a plurality of the light irradiation devices 20 in the longitudinal direction.

  And what is characteristic is that a heating means is provided as a preheating device (30) for performing a preheating step in the front portion of the light curing device 20 in the traveling direction in the photocuring step. As the heat generating means, a light emitting means can be used. In that case, a light emitting means having no curing action on the tubular lining material 10 is used.

  In the present embodiment, an infrared heating element (infrared lamp 30) that emits only pure infrared light (not including light in other wavelength regions) as a light emitting unit for heating (uses the same symbol 30 as the preheating device). Is used. The infrared lamp 30 includes a lamp main body 30a and a cover 30b that covers the lamp main body 30a. The cover 30b is provided with a plurality of cooling openings 30c. The infrared lamp 30 does not function to light cure the tubular lining material 10, but functions effectively to raise the temperature of the tubular lining material 10. Here, for example, 500 W to 800 W is preferably used, but depending on conditions such as the tube diameter, a thing of about 2000 W may be used.

  By installing the infrared lamp 30 in the front, it is possible to perform the preheating step by the same technique as the photocuring means of light irradiation and simultaneously with the photocuring step. That is, the temperature of the tubular lining material 10 can be raised to a temperature suitable for photocuring with the light-emitting diode 22 by light irradiation with the infrared lamp 30 at a stage before light irradiation for curing. The preheating process can be performed by an increase in a simple configuration in which different types of lamps are additionally installed in front without adding a large-scale device.

  By using such a device that combines the light irradiation device 20 and the preheating device 30, light curing is achieved with low power consumption and a small size light irradiation device that maintains good quality of the lining material without excessive temperature rise. Can be done. In addition, the preheating step can be performed simultaneously as a pre-stage of photocuring, and the lengthening of the curing work time, which is a problem when the light emitting diode 22 is used, can be eliminated.

  Further, the light irradiation device 20 and the preheating device 30 loaded with the light emitting diodes 22 shown in FIG. 4 are configured so that the connection interval between the light irradiation device 20 and the preheating device 30 can be adjusted, as shown. . In the present embodiment, an electric hydraulic cylinder 32 that can be expanded and contracted only by a mechanism introduced into the tubular lining material 10 is provided, and the hydraulic cylinder 32 can be automatically expanded and contracted by an operation instruction from the outside. It is configured. As a result, the distance between the light irradiation device 20 and the preheating device 30 can be adjusted depending on the situation in the existing pipe (the sewer main 100) due to the heat from the preheating device 30. The temperature may be too high, and in such a case, the distance between the two can be increased. Therefore, it is preferable to provide a temperature measuring unit in the light irradiation device 20 and monitor the temperature in the vicinity of the light emitting diode 22 so that appropriate light emission can be performed.

  Various means other than the hydraulic cylinder described above can be used to adjust the distance between the light irradiation device 20 and the preheating device 30. As shown in FIG. It is also possible to install an automatic winding means 36 for winding and rewinding the wire 34 between the light irradiation device 20 and the preheating device 30.

  The light irradiation device 20 and the preheating device 30 configured in this way are towed and moved within the tubular lining material 10 by a pulling wire 800 attached to the front end in the traveling direction during photocuring.

  Other components of the light irradiation device 20 and the preheating device 30 will be described with reference to FIG. 6 showing the state in the tubular lining material 10. The figure shows the state inside the tubular lining material 10 in the photocuring step. As shown in FIG. 3, the light irradiation device 20 loaded with the light emitting diodes 22 and the preheating device 30 installed in the preceding stage are arranged on the manhole 200 side on the expanded uncured tubular lining material 10 as shown in FIG. Is drawn in advance into the sewer main 100 toward the manhole 300 side, and the photocuring process is performed while pulling toward the manhole 200 by the pulling wire 800 described above.

  The light irradiation device 20 and the preheating device 30 are configured as a movable device (“lamp train”) that can move in the tubular lining material 10. That is, the light irradiation device 20 loaded with the light emitting diode 22 as the curing light emitting unit is connected in two stages, and an infrared lamp 30 as a preheating device is connected to the front side thereof. In addition, in order to enable the light irradiation device 20 and the preheating device 30 to be moved so as to be positioned at the center in the tubular lining material 10 at predetermined positions of the respective members, wheels are attached to the leg portions and the tips thereof. Each of the known traveling means 38 is provided.

  According to this embodiment, it is not necessary to perform the preheating process separately as a prior work of the light irradiation process, and the preheating process can be performed simultaneously during the pulling movement of the light irradiation apparatus 20, and the process is complicated. Sex does not occur. That is, as described above, the appropriate temperature for the curing reaction by light irradiation of the uncured tubular lining material 10 is generally 40 ° C. to 50 ° C. On the other hand, in the light emitting diode 22 having a temperature of about 70 ° C. during light emission, Although it is not easy to raise the temperature of the tubular lining material 10 in contact with the sewer main 100 cooled in the ground to an appropriate temperature, this preheating step can achieve a quick photocuring step by the light emitting diode 22. it can.

  Moreover, it is important that the tubular lining material 10 is prevented from being in an unnecessarily high temperature state as in the case of using a high-power ultraviolet lamp, although a rapid photocuring process can be secured. Therefore, not only the deterioration of the tubular lining material 10 but also the risk of generation of odorous and flammable gases such as styrene and fire may be suppressed.

  FIG. 7 shows another configuration example of the light irradiation device. As shown in the drawing, the main body portion is configured as a light irradiation device 70 having a hexagonal columnar body, and the light emitting diodes 22 are provided on each of the six side surfaces thereof. As described above, the light irradiating device can be configured in various configurations as long as the light emitting diode 22 is appropriately disposed on the outer surface of the light irradiating device so that the inside of the tubular lining material 10 can be irradiated.

  FIG. 8 shows an embodiment in which the light irradiation device 20 is moved while being rotated. That is, a rotation drive device 40 for applying a rotational force to the light irradiation device 20 is connected to the rear stage of the last light irradiation device 20. The rotation drive unit 40 is loaded with a rotation drive unit 42. For example, a rotation shaft 44 rotated by the rotation drive unit 42 is inserted and fixed in each light irradiation device 20. The rotation driving means 42 is rotated at an appropriate speed according to an operation instruction from the outside. And in the part of the connection coupling part 23 of each light irradiation apparatus 20, the ball bearing is loaded and it has the structure which each light irradiation apparatus 20 can rotate.

  The light irradiation to the inner wall of the tubular lining material 10 must be performed uniformly and uniformly by the light emitting diodes 22 installed on the surface of the light irradiation device 20, and for that purpose, the light emitting diodes 22 must be properly arranged. Don't be. However, by rotating the light irradiation device 20 as in this embodiment, uniform light irradiation to the entire inner wall of the tubular lining material 10 can be easily obtained. By the rotation operation of the light emitting diode 22 and the pulling movement operation by the pulling wire 800, the movement locus of each light emitting diode 22 is drawn in a spiral shape in the tubular lining material 10 instead of one straight line. Therefore, uniform light irradiation without unevenness is ensured.

  Further, in the present embodiment, the rotational drive device 40 has a configuration capable of self-propelling, and the wheel 45 is rotationally driven by the traveling drive unit 432 to drive the light irradiation device 20 and the preheating device 30 ahead. The entire structure can be pushed and moved. In this case, the distance adjusting mechanism between the light irradiation device 20 and the preheating device 30 described above has a structure that can maintain the distance even when pushed from behind.

  FIG. 9 shows an embodiment in which a configuration (jacket 80) for facilitating the work is added when performing the photocuring method according to the present invention. When repairing the entire sewer main 100, the tubular lining material 10 introduced into the sewer main 100 must cover the entire sewer main 100. Therefore, the tubular lining material 10 protrudes to the manhole side outside the sewer main 100. In that case, the tubular lining material 10 swells greatly when the diameter-enlarging air is introduced, and a phenomenon occurs in which the thickness of the tubular lining material 10 at the port portion of the sewer main pipe 100 becomes thin.

  Therefore, the jacket 80 is attached to both ends of the tubular lining material 10. The jacket 80 is formed mainly of reinforced glass fiber and has strength that can prevent the tubular lining material 10 from bulging in the manhole. The jacket 80 is mounted inside the both ends of the sewer main 100 with the open end 80a side inserted, and the protruding portion of the tubular lining material 10 is accommodated in the jacket 80.

  The jacket 80 has a certain shape retention force due to the pressurized air for expanding the diameter introduced into the tubular lining material 10, and the light irradiation device 20 (in this drawing, one light irradiation device is used) is shown. Can be moved into the jacket 80 and can be dredged. And it becomes possible to perform favorable light irradiation with respect to the whole area | region of the tubular lining material 10 in the sewer main pipe 100 by carrying out the traction movement from there.

  The present invention is not limited to the configuration of each of the above embodiments, and various modifications can be made within the scope of the gist of the invention. For example, the connection of the light irradiation devices 20 is limited to a plurality of cases, and the light irradiation devices 20 loaded with the infrared lamps 30 and the light emitting diodes 22 may be connected one by one. Moreover, the mechanism for adjusting the space | interval between a light irradiation apparatus and a preheating apparatus can use well-known various techniques which can adjust the length of the connection means, connecting both. is there.

It is a schematic explanatory drawing which shows the drawing-in operation | movement of a tubular lining material. It is explanatory drawing which shows the reverse insertion operation | movement of a tubular lining material. It is operation | movement explanatory drawing which shows the diameter expansion and shaping operation | movement of the tubular lining material which concerns on embodiment. It is explanatory drawing which shows embodiment of a light irradiation apparatus and a preheating apparatus. It is explanatory drawing which shows other embodiment of a light irradiation apparatus and a preheating apparatus. It is explanatory drawing which shows the state of the light irradiation apparatus and the preheating apparatus in the tubular lining material introduced into the existing pipe. It is explanatory drawing which shows the other structural example of a light irradiation apparatus. It is explanatory drawing which shows the structural example which made the light irradiation apparatus rotatable automatically. It is explanatory drawing which shows embodiment which made it load a jacket at the both ends of the existing pipe | tube.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Tubular lining material 20, 70 Light irradiation apparatus 22 Light emitting diode 30 Preheating apparatus (infrared lamp)
34 Wire for adjusting the distance 36 Winding device 40 Rotation drive device

Claims (6)

Tubular lining material introducing step of introducing an uncured photo-curing tubular lining material so that its outer surface is along the inner wall of the existing pipe to be rehabilitated, and light irradiation from the inside of the introduced tubular lining material In a photocuring method of a photocurable lining material, including a photocuring step of curing the lining material,
The photocuring step is performed using a light emitting diode,
As a step preceding the photocuring step, the tubular lining material includes a lining material preheating step of raising the temperature of the tubular lining material to a temperature state in which a photocuring reaction due to light irradiation of the light emitting diode becomes favorable. A photocuring method for a photocurable lining material. The photocuring step includes
In the tubular lining material, there is provided movable light irradiating means arranged so as to be movable in the tubular lining material and having the light emitting diodes arranged so as to irradiate the entire inner wall of the tubular lining material. Is done while moving
The lining material preheating step
A heating unit for heating the tubular lining material is provided at a forward position in the advancing direction at a predetermined interval from an arrangement position of the light emitting diode of the movable light irradiation means, and the light curing step of the light curing by the light emitting diode The method for photocuring a photocurable lining material according to claim 1, wherein the photocuring method is performed by heat generation from a heating unit. A lining material introducing means for introducing an uncured tubular lining material into an existing pipe so that an outer surface thereof is along the inner wall surface of the existing pipe to be rehabilitated, and curing the tubular lining material by irradiating light from the inside of the tubular lining material A photo-curing system for a photo-curable lining material, comprising:
The light irradiation means includes
A moving body configured to be movable in the tubular lining material;
A light emitting diode provided in the movable body so as to be capable of irradiating light on the entire circumference of the inner wall of the tubular lining material;
In the forward direction of movement during the light curing operation of the light irradiation means,
The front region of the light irradiation position of the light irradiating means on the inner wall of the tubular lining material provided to be connected to the light irradiating means and configured to be movable in the tubular lining material together with the light irradiating means during the moving operation. A photo-curing system for a photo-curing lining material, wherein preheating means for heating is disposed. The light irradiation means includes
4. The photo-curing property according to claim 3, wherein a plurality of light emitting diodes are arranged and mounted on the outer surface of the movable body so that light is irradiated to the entire circumference of the inner wall of the tubular lining material. Light curing system for lining materials. The moving body of the light irradiation means is
The light emitting diode is mounted on the moving main body so as to be able to irradiate light outward at predetermined intervals, and at least the light emitting diode mounting portion is configured to perform the light curing operation. 5. The photocuring system for a photocurable lining material according to claim 3, wherein the photocuring system is configured to rotate around a rotation axis extending in the moving direction during movement at the time. The light irradiation means and / or the preheating means include self-propelled means that can automatically move within the tubular lining material without being pulled.
The photocuring system of the photocurable lining material according to any one of claims 3 to 5.

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