JP4667315B2 - Repair device for the inner surface of large-diameter pipes - Google Patents

Description

  The present invention relates to an apparatus for repairing a crack, a hole, or the like generated on the inner surface of a pipeline, particularly a large-diameter pipeline, from the inner surface of the pipeline.

Conventionally, when cracks or holes have opened in the conduits or small sewage pipes buried in the ground and intrusion water has occurred, excavation from the ground surface to find defective parts, repair or replacement of conduits, etc. I was doing.
Recently, a technology has been developed to detect a defective part from the inner surface by inserting a small TV camera from the manhole into the pipeline, and this technique enables the detection of the defective part and the inspection of the defective state. Repair technology from the inside of the pipeline has also been developed.
In repairing the inner surface of a large-diameter pipe, “the cross-section is made of an elastic body that can be inflated by sucking air in order to press-fit the repair material into the pipe impregnated with the resin binder affixed to the outer periphery. Or a polygonal sealed cylindrical body, a drain pipe for passing water in a pipe line provided in the lower part of the cylindrical body, and provided near the center of the cylindrical body A large-diameter in-pipe repair device comprising a communication passage pipe and side surface fixing ropes provided on both side surfaces of the cylindrical body to prevent swelling of the side surface of the cylindrical body. Reference 1), “A crimping plate having a shape that matches the shape in the pipeline, a jackie, and a support stand. A jackie is attached to the support stand, and a crimping plate is attached to the jackie, and crimped to the outer periphery of the crimping plate. Laying a rubber plate, attaching repair material on the pressure-bonded rubber plate, and repairing Crimping a large-diameter pipe inner surface of the repair device is formed by being be performed by extension of Jackie. "(Patent Document 2) it is proposed.
Japanese Patent Laid-Open No. 7-238527 JP-A-8-170786

  The repair device described in Japanese Patent Application Laid-Open No. 7-238527 is easy to insert into and out of a narrow manhole, and can be constructed even with a small amount of water. On the other hand, the cylindrical body is a tube-shaped device. Therefore, there is a limit to the force with which the repair material provided on the outer periphery is pressed against the tube wall, and the device described in Japanese Patent Laid-Open No. 8-170786 is a non-circular tube (generally a horseshoe tube or a box culvert). ) Is used as a device for repairing, but this device has a bias in the force of pressing the repair material against the pipe wall. That is, there is a variation in the pressing force between the portion where the jack is in contact and the portion where the jack is not, and there is a problem that it is difficult to apply the pressing force evenly.

As a result of diligent research to solve the above problems, the present inventor made a mold while joining stainless steel panels, wound a repair material around the outside of the mold, and then pressed the jack onto the mold. We found that the above-mentioned problem can be solved by pressing the repair material against the tube wall with a strong force by making a tension toward the outside and pushing the panel on the diagonal with a jack. did.
In other words, the present invention provides: (1) a formwork configured from a plurality of connectable panels that conforms to the shape in the pipe line, a repair material mounted on the outside of the formwork, and the formwork in the pipe line. A large-diameter pipe inner surface repair device consisting of one or more jacks for pressing and fixing the repair material mounted on the outside of the formwork to the pipe inner surface. (1) The repair device according to (1), which has a jack base portion for carrying out, a convex or concave insertion portion for joining the panel to the side surface portion thereof, and (3) a joint portion between the panel and the panel slides The repair device according to (1) or (2), (4) the repair device according to (1), wherein the jack has a pressing portion at both ends and is pressed by rotation, (5) A guard sponge is installed under the repair agent (between the repair agent and the panel). (1) The repair device according to (1), (6) The guard sponge is of a two-layer formation, and the repair is described in (5), wherein a cavity is provided in part between the two layers (7) The repair device according to (1), wherein the shape in the duct is circular or non-circular, and (8) the shape in the duct is a horseshoe shape or a box culvert shape (generally a horseshoe tube or box) A circular or non-circular large-diameter pipe using the repair device according to (1) or (7), or the large-diameter pipe inner surface repair device according to (9) (1) to (8). The present invention relates to a repair method for repairing the road inner surface.

While joining a plurality of stainless steel panels, a mold that matches the inner wall surface of the pipe is made, and a jack that can be pressed at both ends is provided inside the mold and diagonally to the panel. With the configuration in which the mold is pressed toward the outside from the center of the pipe by both ends of the pipe, the repair material provided on the outside of the mold can be strongly pressed against the inner wall of the pipe line. Then, by adjusting the curved surface angle of the panel, it is possible to easily form a mold that can correspond to, for example, a circular shape to a non-circular shape according to the shape of the wall surface. Furthermore, by providing a sliding function at the joint portion of the panel, even if the shape and size of the inner wall of the pipe is different from the standard, the formwork can be easily configured and constructed.
Moreover, even if there is much flow volume of the water etc. in a pipe line, even if it is about 3 times as much, construction is possible.

The present invention repairs damage on the inner surface of a large-diameter pipe, that is, a crack, a hole, etc., and the apparatus of the present invention is carried into the pipe through a manhole to repair it.
Since the apparatus of the present invention is configured by using a plurality of panels constituting the formwork that matches the inner wall of the pipe line and a plurality of jacks that can be pressed at both ends, it is easy to carry in and out from the manhole. The panel and jack are carried into the pipe line, and the panel is joined within the pipe line to make a form that matches the shape of the inner wall of the pipe line, and the upper and lower, left and right, or diagonally above the formwork A jack that can be pressed at both ends is provided, pressed toward the outside of the mold, and the repair material provided outside the mold is pressed against the inner wall surface of the pipe.

The present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of a horseshoe-shaped pipe repair device according to the present invention, FIG. 2 is a schematic cross-sectional view and a plan view of panels A and B constituting the mold of the repair device according to the present invention, and FIG. Cross-sections and schematic plan views of the panels C, G, H, F, D, and E constituting the mold of the repair device, FIG. 4 is a panel of the upper left wall constituting the mold of the repair device of the present invention. FIG. 5 is a schematic cross-sectional view of the upper right wall portion constituting the mold of the repair device of the present invention, and FIG. 6 is a schematic plan view thereof. It is a plane schematic diagram of the jacky of a repair apparatus, A is an adjustment jack, B is a schematic diagram of a support jack. FIG. 7 is a schematic diagram of the configuration function of the adjust jack, and FIG. 8 is a schematic diagram of the configuration function of the support jack. 9 to 13 are schematic views of assembly construction repair of the repair device of the present invention, FIG. 9 is a schematic plan view of the equipment assembly on the pipe bottom of the repair device of the present invention, and FIG. 10 is a side wall portion of the repair device of the present invention. FIG. 11 is a schematic diagram of equipment assembly in the upper left wall of the repair device of the present invention, FIG. 12 is a schematic diagram of equipment assembly in the upper right wall of the repair device of the present invention, and FIG. It is a plane schematic diagram at the time of completion of repair installation in the horseshoe-shaped pipeline of the repair device of the present invention. FIG. 14 is a schematic plan view of the guard sponge of the present invention, A is a schematic plan structure diagram of the guard sponge, and B is a schematic plan structure diagram of both ends of the guard sponge. In the figure, 1 is a repair device of the present invention, 2 is a panel, 3 is a jack base part, 4 is a jack base part fixture, 5 is a jack, 5A is an adjustment jack, 5S is a support jack, 6 is a jack support, 7 Indicates a jack shaft, 8 indicates a jack adjusting base, 8 ′ indicates an adjusting base shaft coupling portion, 8 ″ indicates a shaft coupling tightening portion, 9 indicates a jack adjustment string, 10 indicates a jack holder, 11 indicates a jack fixing (push pin) hole, 12 Is a panel folding part (movable part), 13 is a slide cut (jack base), 14 is a panel reinforcing material, 21 is a repair material, 22 is a guard sponge plate, 23 is an upper sponge, 24 is a lower sponge, and 25 is a sponge cavity And 26 are guard sponge both ends, a is an insertion convex part, b is an insertion recessed part.
With this device, it is possible to cope with the repair of circular to non-circular pipes of large-diameter pipes.

As shown in FIG. 1, the large-diameter repair device of the present invention can perform repair in a circular or non-circular (for example, horseshoe-shaped) pipeline. A plurality of panels that can be combined are combined to form a form that matches the shape in the pipeline. The panel 2 at the bottom of the tube is composed of a panel A and a panel B shown in FIG. The panel A and the panel B are provided with a jack base portion 3 at a longitudinal intermediate portion thereof, and are fixed by a jack base fixture 4. Further, the panel A has a slide receiving portion, the panel B has a slide insertion portion on its side, the panel A has a panel folding portion 12, and the panel B has a jack base portion 3. It is said that. Panels A and B form a tube bottom mold by fitting the projection a of the slide insertion portion of panel B with the recess b of the slide receiving portion of panel A. The tube bottom portion formed by combining the panels A and B has a jack base portion 3 at the center thereof, and there are panels A and B on both sides of the jack base portion 3 at the center portion, It becomes the thing of the structure which has the jack base part 3. A tube fixing frame 10 for fixing the shafts 7 at both ends of the jack 5 is provided on the mold at the bottom of the tube formed by joining the panels A and B. The fixing frame 10 is used for fixing both ends of the jack. The fixture hole 11 is provided. The side wall part in a pipe line is comprised by panel C, G, H (right side wall part) and panel F, D, E (left side wall part) shown in FIG.1 and FIG.3. As shown in FIG. 3, panels C and F constituting the lower part of the side wall part have a panel insertion concave part b, and D and G constituting the central part of the side wall part have panel insertion convex parts at the lower part of the panel. The upper panel insertion recess b is provided with a jack base portion 3 provided at the lower portion of the insertion recess b, and E and H constituting the upper portion of the side wall portion have the same structure as the panels D and G. Consists of. As for the connection of these panels, in the right part, the insertion part convex part a of the panel G is inserted into the insertion part concave part b of the panel C, and the insertion part convex part a of the panel H is inserted into the insertion part concave part b of the panel G. In the left side, the insertion part convex part a of the panel D is inserted into the insertion part concave part b of the panel F, and the insertion part convex part a of the panel E is inserted into the insertion part concave part b of the panel D. It is inserted and sequentially joined to form a formwork side wall portion composed of panels F, D, E (left side wall portion) and C, G, H (right side wall portion).
The upper left wall portion in the pipe is composed of panels I, J, and K shown in FIGS. 1 and 4, and the right wall portion is composed of panels L, M, and N similarly shown in FIGS.
As shown in FIG. 4, the panel I constituting the lower portion of the upper left wall portion has an insertion convex portion a and an insertion concave portion b, and has a configuration in which a folding portion 12 is provided immediately beside the insertion convex portion a. The panel J constituting the central portion of the wall portion has the insertion convex portion a and the insertion concave portion b on the side portion, and the jack base portion 3 is provided closer to the insertion convex portion a side. In addition, the panel K constituting the upper part of the upper left wall portion is provided with an insertion convex portion a on the side portion and a jack base portion 3 provided at substantially the center of the panel. As shown in FIGS. 1 and 5, the upper right wall portion is composed of panels N, M, and L, and the panel L constituting the lower portion of the upper right wall portion is inserted into the side portion at the center of the recessed portion a and the panel. The panel M constituting the central portion of the upper left wall portion has the insertion convex portion a and the concave portion b on the side portion, and the jack base portion 3 near the insertion convex portion a side. N which comprises the upper part of an upper right wall part has the insertion convex part a and the recessed part b in a side part, and consists of a structure which has the folding part 12 just beside the insertion convex part a.
The forming of the mold is performed by connecting the insertion convex part a and the concave part b provided on the panel. A sliding function (for example, see FIG. 2) is provided at the joint part of the insertion convex part a and the concave part b. Therefore, even if the shape and dimensions of the pipe of the pipe line are different from the standard, construction is possible.
As shown in FIGS. 1, 6, 7 and 8, the jack 5 of the present invention has a rod-like shape, is located at both ends of the jack support 6 and the jack support 6, and is inserted into the jack support 6. A jack shaft 7 and an adjustment base 8 that presses the panel against the tip of the shaft 7 are provided. An adjustment string 9 is provided at an intermediate portion of the shaft 7. The jack 5 rotates the adjustment string 9 to fit the adjustment base 8 to the jack base portion 3 of the panel to press the panel 2, and presses the repair material 21 provided outside the panel 2 onto the inner surface of the pipe line. Is.
As shown in FIGS. 6, 7 and 8, the jacky adjustment base 8 is a U-shaped with the open surface facing downward, and has a structure that fits with a U-shaped with the open surface of the jacky base portion facing upward. Thus, the panel can be surely pressed. The jacky shaft 7 has a structure that can be expanded and contracted by threaded rotation, and can be expanded and contracted by rotating the adjuster string 9 to be accommodated in the jack support 6. The jack support 6 is in the form of a pipe through which the jack shaft 7 can enter and exit. The adjustment shaft 7 and the adjustment base 8 are coupled directly to each other as shown in FIGS. 6A and 7 as well as to the shaft coupling of the adjustment base coupling portion 8 'as shown in FIGS. 6B and 8. It has a structure in which it is joined at the fastening portion 8 ''.
The repair material 21 used in the present invention is a reinforcing material such as glass fiber, other carbon fiber, Kevlar fiber, etc., a resin binder which is an engineer plastic resin such as unsaturated polyester resin, epoxy resin, emulsion resin, etc. It is a synthetic resin product that is impregnated with an underwater curable resin binder to form a mat and has a constant strength with respect to directionality. Various repair materials can be combined depending on the size and strength of the target defect. One or a plurality of repair materials are used in an overlapping manner, and the number of repair materials is adjusted according to the size of the defect. As an example, there may be mentioned one in which three normal glass cloths and two straight glass cloths (waterproof mats) are alternately stacked.
The guard sponge plate 22 of the present invention, which is laid under the repair material 21 and used to effectively press-fit the repair material 21 in the pipeline, has a two-layer structure as shown in FIG. 23 and a lower layer sponge 24, and the lower layer sponge 24 is provided with a cavity 25. The hollow portion 25 has a width of about 100 mm and a thickness of about 10 mm, and is provided in a portion corresponding to a corner of an existing pipe. As a result, the corner portion can be repaired smoothly.

Next, an example of the construction method is shown in FIGS.
First, in the tube bottom portion shown in FIG. 9, the repair material 21 is spread along the tube bottom, and the guard sponge plate 22 is placed thereon and spread. The size of the repair material was 60 to 70 cm in width, 30 mm in thickness, and substantially the same as the inner circumference of the existing pipe.
Next, as shown in FIG. 9, the panels A and B are joined by the slide receiving portion and the slide insertion portion, and placed on the guard sponge plate 22 and the repair material 21 laid on the bottom of the tube. Panel C is installed on the right side wall and panel F is installed on the left side wall, and the jack shaft 7 of the jack 5 is fixed to the two locations of the jack holder 10 of the panel A and the panel B with the jack fixing tool (bolt) 11 respectively. Tighten the ring 9. When the adjuster string 9 is tightened, the panel equipment slides and is fixed to each wall by pressure. The panel C and the panel F are wound with the guard sponge plate 22 placed on the tube bottom and the repair material 21 on the outside thereof. Next, as shown in FIG. 10, panel D and panel E are pre-assembled on the right pipe wall, and panel G and panel H are pre-assembled on the left pipe wall. After inserting and assembling, the adjusting jack 5A, for example, the No. 2-1 jack is installed in the panel D and the panel G, and the No. 2-2 jack is installed in the panel E and the panel H. At that time, the jack adjustment base 8 is fitted to the jack base portion 3 of the panel, the adjustment string is tightened, the panels D, E, G, and H are crimped and fixed. The repair material 21 is pressed against the inner surface of the pipe line. Next, as shown in FIG. 11, the tube left upper panel I, the panel J, and the panel K are assembled in that order and inserted into the installed panel E for temporary installation. Furthermore, as shown in FIG. 12, the panel L for the upper right part of the pipe, the panel M, and the panel N are assembled in that order, inserted into the installed panel H, and temporarily installed. A guard sponge 22 and a repair material 21 are similarly wound around the outer periphery of the assembled panels I, J, K and panels L, M, N. As shown in FIG. 13, a support jack 5S is installed. For example, No. 3-1 jack is on panel J and panel M, No. 3-2 jack is on panel A and B and panels K and N, No. 3-3 jack is on panel B and panel J, No. 3 -4 jacks are installed on panel A and panel M, respectively. All the installed jacks are tightened evenly, and the sponge guard 22 and the repair material on the outside of the panel are pressed against the inner surface of the pipeline to fix the repair material.
After fixing the repair material 21 in the pipe line, the jacks 5 are loosened, the equipment is disassembled in the reverse order of assembly, and the repair is completed.

  The repair device for the inner surface of the large-diameter pipe of the present invention is composed of extremely simple equipment consisting of a panel and a jack, and the shape of the inner surface of the pipe can be changed from a circular shape to a non-circular shape. It is very easy to carry in, assemble and carry out, and is extremely useful in repairing the inner surface of the pipeline.

It is a cross-sectional schematic diagram of the horseshoe-shaped pipe repair device of the present invention. It is the cross section and plane schematic diagram of the panels A and B of the pipe bottom part which comprise the mold of the repair apparatus of this invention. It is the cross section and plane schematic diagram of the panels C, D, E of the side wall part which comprise the mold of the repair apparatus of this invention, and the panels F, G, H. It is the cross section and plane schematic diagram of the panels K, J, and I of the upper left wall part which comprise the mold of the repair apparatus of this invention. It is the cross section and plane schematic diagram of the panels N, M, and L of the upper right wall part which comprise the mold of the repair apparatus of this invention. It is a plane schematic diagram of the jack of the repair apparatus of this invention, A is an adjustment jack, B is a schematic diagram of a support jack. It is a schematic diagram of the structure function of the adjustment jack of this invention. It is a schematic diagram of the structure function of the support jack of this invention. It is an equipment assembly plane schematic diagram in the pipe bottom of the repair device of the present invention. It is the equipment assembly plane schematic diagram in the side wall part of the repair apparatus of this invention. It is an equipment assembly plane schematic diagram in the upper left wall part of the repair device of the present invention. It is the equipment assembly plane schematic diagram of the upper right wall part of the repair apparatus of this invention. It is a plane schematic diagram at the time of completion of repair installation in the horseshoe-shaped pipeline of the repair device of the present invention. It is a plane schematic diagram of the guard sponge of the present invention, A is a schematic plan structure diagram of the guard sponge, B is a schematic plan structure diagram of both ends of the guard sponge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Repair apparatus 2 Panel 3 Jack base part 4 Jack base part fixing tool 5 Jack 6 Jack support body 7 Jack shaft 8 Jack adjustment base 8 'Adjustment base shaft coupling part 8 "Shaft coupling fastening part 9 Jack adjustment string 10 Jack Holder 11 Jack fixture 12 Panel folding part 13 Slide cut (jack base)
14 Panel reinforcement material a Insertion convex part b Insertion recessed part 21 Repair material 22 Guard sponge board 23 Upper layer sponge 24 Lower layer sponge 25 Sponge cavity part 26 Guard sponge both ends

Claims (9)

A plurality of panels that can bind composed of the union, mold matching the conduit shape, repairing material and mounted on the outside of the mold frame, to press the mold frame into conduit, the 1 or more jack key or Ranaru large diameter pipe inner surface of the repair device for crimping the repair material mounted on the outside of the formwork pipe inner surface. 2. The repair device according to claim 1, wherein the panel has a jack base portion for pressing the middle portion with a jack, and a convex or concave insertion portion for joining the panel and the panel to the side surface portion thereof. The repair device according to claim 1 or 2, wherein the panel and the joint portion of the panel can slide. Jack has a pressing portion at both ends, repair apparatus according to claim 1, wherein it is made of a configuration that more pressing stretch due to the rotation of the jack. The repair device according to claim 1, wherein a guard sponge is provided between the repair material and the mold . The repair device according to claim 5, wherein the guard sponge is formed in two layers, and a cavity is provided in a part between the two layers. The repair device according to claim 1, wherein the shape in the pipeline is circular or non-circular. The repair device according to claim 1 or 7, wherein the shape in the duct is a horseshoe shape or a box culvert shape. A repair method for repairing a circular or non-circular large-diameter pipe inner surface using the large-diameter pipe inner surface repair apparatus according to claim 1.

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