JP6588791B2 - Belt-shaped member and method for forming rehabilitation pipe using the same - Google Patents

Description

  The present invention relates to a belt-shaped member and a method for forming a rehabilitation pipe using the same.

  It has been widely practiced to form a rehabilitation pipe by joining the side edges of a long belt-like member wound spirally, and to rehabilitate an existing pipe line that has been aged by this rehabilitation pipe. As the band-shaped member, a configuration having a protrusion formed on one side edge in the width direction and a concave groove formed on the other side edge and fitted with the protrusion is known. (For example, refer to Patent Document 1).

  Conventionally, for example, as shown in FIG. 13A and FIG. 13B, the stepped portion 911 of the head portion of the protruding portion 91 is formed by fitting the protruding portion 91 and the recessed groove portion 92 of the band-shaped member 9 together. The inner surface of the concave groove portion 92 is locked to the stepped surface 921 and is prevented from coming off. Further, the inclined piece 94 extending obliquely to the side of the concave groove portion 92 is engaged with the rib 95 of the adjacent belt-like member 9 so that the joined state of the side edge portion of the belt-like member 9 is maintained. Was composed. Moreover, the water stop member 96 was provided in the vicinity of the side edge part of the strip | belt-shaped member 9, and it pressure-bonded, and the water stop was provided to the tubular body to form.

  Further, as shown in FIG. 14A, there is an example in which a water stop member 96 is provided on the inner surface of the concave groove portion 92 of the band-shaped member 9. As shown in FIG. 14 (b), the protruding portion 91 is fitted into the recessed groove portion 92, and the head 97 of the protruding portion 91 is brought into close contact with the water-stopping member 96, so that the formed tubular body is provided with water-stopping properties. It was.

JP 2000-50472 A

  The conventional strip-shaped member 9 is configured such that the projecting portion 91 and the recessed groove portion 92 are fitted together so that the side edge portions are integrated with no gap to form a tubular body. Further, when the protruding portion 91 and the recessed groove portion 92 are fitted together, the water stop member 96 is brought into close contact with each other, and the tube diameter of the tubular body to be formed is fixed. After fitting the ridge 91 and the concave groove 92, the tube diameter of the tubular body could not normally be changed.

  Therefore, for example, when the rehabilitation pipe is formed so as to be attached to the inner surface of the rehabilitation target pipe line without a gap, or when the inner diameter of the pipe line changes midway, the rehabilitation pipe has a predetermined pipe diameter. Thus, after winding the belt-like member 9 while regulating it, the protrusion 91 and the concave groove 92 had to be fitted together. However, since such a construction process requires labor and time and is not an easy operation, it is desired that the tube diameter of the tubular body can be appropriately adjusted even after the tubular body is formed. .

  The present invention has been made in view of such problems. The object of the present invention is to provide a strip-shaped member whose tube diameter can be adjusted after forming a tubular body, and a rehabilitation using the strip-shaped member. It is to provide a method for forming a tube.

  The solution means of the present invention for achieving the above object is premised on a belt-like member which is wound in a spiral and becomes a rehabilitation pipe. As such a belt-like member, a flat plate portion in which side edges are joined to form a tubular body, and first and second hooks that are provided along the longitudinal direction at both side edges of the flat plate portion and can be joined to each other. The first hooking portion is provided with an engaging portion, and the second hooking portion is provided with an engaged portion that engages with the engaging portion. At least one of the engaging portion of the portion and the engaged portion of the second hooking portion is characterized in that it protrudes in a state of being connected in a plurality of stages in the thickness direction of the flat plate portion.

  With this specific matter, the first and second hooking portions can be fitted together to reliably join the belt-like member to form a rehabilitation pipe. At this time, since at least one of the engaging portion of the first hooking portion and the engaged portion of the second hooking portion is formed in a plurality of stages, the engaging portion and the engaged portion are stepped. It is possible to engage and join together. The band-shaped member can be formed into a tubular body by engaging the engaging portion and the engaged portion in the first stage, and a gap is held between the first hooking portion and the second hooking portion. State. Therefore, it is possible to appropriately expand and contract the band-shaped member that has become a tubular body in a state where the first stage is engaged, and it is possible to form a rehabilitating tube while adjusting the tube diameter.

  The following are mentioned as a more concrete structure of the said strip | belt-shaped member. In the band-shaped member having the above-described configuration, the first hanging portion has a convex portion along the longitudinal direction at one side edge portion in the width direction, and the second hanging portion is the other end in the width direction. The edge portion has a groove-like portion along which the convex portion fits along the longitudinal direction, the engaging portion protrudes from the convex portion in one or two steps, and the engaged portion is It is preferable that the groove-shaped portion protrudes in two steps on the inner wall surface.

  Accordingly, the first hooking portion and the second hooking portion can be joined by fitting the convex portion and the groove-like portion step by step, and the engaging portion and the engaged portion are the first stage. When meshing, it is possible to change the tube diameter of the formed tubular body.

  In addition, the first hooking portion and the second hooking portion may be configured to have groove portions that open in opposite directions and fit with each other.

  In this case, the first hooking section is defined by a belt-shaped first base, two or more first protrusions projecting from one surface of the first base, and the first base and the first protrusion. And the second hooking portion protrudes on the other surface of the second base portion and a belt-like second base portion extending substantially parallel to the first base portion. The first protrusion that has the above-described second protrusion and one or more second grooves defined by the second base and the second protrusion, and the engaging portion fits into the second groove. It is preferable that the strip is provided in two steps, and the engaged portion is provided in two steps on at least one second protrusion that defines the second groove.

  Also by this, a 1st protrusion part and a 2nd protrusion part can be fitted in steps, and a 1st hanging part and a 2nd hanging part can be joined, and an engaging part and a to-be-engaged part Can be changed in the first stage, the tube diameter of the tubular body can be changed.

  Further, at least one of the first hooking portion and the second hooking portion is provided with a mark portion, and the mark portion is engaged via the first stage of the engaging part or the engaged part connected in a plurality of stages. It is preferable to have a structure that is visible when in a closed state and is hidden when engaged through the second and subsequent stages.

  Thereby, it becomes possible to grasp | ascertain easily the joining state of a 1st hanging part and a 2nd hanging part from an external appearance.

  Moreover, it is preferable that the said mark part is a ditch | groove shape or protrusion shape, or an identification color is provided.

  Accordingly, the mark portion can be easily provided on the belt-shaped member and can be easily visually recognized.

  Moreover, it is preferable that the said 1st hooking part or the said 2nd hooking part is provided with the water stop member which has a viscoelasticity while filling the clearance gap between these 1st hooking parts and a 2nd hooking part.

  Thereby, a water stop member can be made to contact | adhere between the 1st hooking part and the 2nd hooking part, and water stop can be ensured, and it holds in the state which engaged the engaging part and the to-be-engaged part. It becomes possible.

  In addition, the water stop member is a string-like water stop member having properties that are difficult to be pulled and deformed in the longitudinal direction of the flat plate portion and viscoelastic in the direction perpendicular to the axis, and adjusting the amount of deformation in the axial direction. It is preferable to include a possible core material and a synthetic resin-coated body that covers the surface of the core material and has viscoelasticity.

  Accordingly, it is possible to stably dispose the string-like water-stopping member between the first hooking portion and the second hook-up portion while suppressing the extension of the string-like waterstop member, and to ensure the water-stop function. It can be demonstrated.

  A method for forming a rehabilitation pipe using a band-shaped member having the above-described configuration is also within the scope of the technical idea of the present invention. That is, it has a long belt-like flat plate portion constituting the tubular body, and first and second hooking portions that are provided along the longitudinal direction at both side edges of the flat plate portion and can be joined to each other. An engaging portion protrudes from the connecting portion, and an engaged portion that engages with the engaging portion protrudes from the second engaging portion, and the engaging portion of the first engaging portion and the engaging portion of the second engaging portion are provided. At least one of the engaged parts is a method for forming a rehabilitation pipe using a strip-shaped member provided in a state of being connected in a plurality of stages in the thickness direction of the flat plate portion, and the strip-shaped member is spirally wound. The engaging portion and the engaged portion are engaged with the adjacent first engaging portion and the second engaging portion via a plurality of engaging portions or first steps of the engaged portions. Then, the temporary joining step of making the belt-like member into a tubular body, and the engaging portion and the engaged portion are slid relative to each other in the longitudinal direction, and the first hooking portion is changed to the second hooking portion. The adjustment step of changing the tube diameter of the tubular body by shifting in the circumferential direction, and the engagement portion and the engaged portion are arranged in a plurality of stages, or the second and subsequent stages of the engaged portion. And a main joining step for joining the first hooking part and the second hooking part.

  Thereby, the tubular body formed through the temporary joining step is changed to one having a desired pipe diameter corresponding to the rehabilitation target pipeline in the subsequent adjustment step, and is constructed as a rehabilitation pipe having a suitable pipe diameter. Is possible. It is not necessary to adjust the bending shape of the belt-like member to the required pipe diameter as in the past, or to adjust the curvature of the belt-like member itself during work, and it is possible to smoothly make pipes without complicated work The construction period can be shortened.

  Further, in the temporary joining step, a roller that rotates in contact with the flat plate portion of the belt-like member is pressed against the belt-like member, and the roller includes a large-diameter portion and a small-diameter portion. In between, there is a stepped portion corresponding to the pushing amount enough to engage the first step of the engaging portion and the engaged portion, and the stepped portion is connected to the first hooking portion and the second hooking portion. It is preferable to dispose the large-diameter portion in contact with the belt-like member in the second round and to place the small-diameter portion in contact with the belt-like member in the first round.

  Thereby, the engaging part of a 1st hanging part and the to-be-engaged part of a 2nd hanging part can mesh | engage in steps, and can be temporarily joined easily.

  According to the present invention, the tube diameter can be adjusted after the tubular body is formed, and the highly reliable tubular body can be obtained by securely fitting the first hanging portion and the second hanging portion. Since it can form, the formation method of the strip | belt-shaped member excellent in workability and reliability and the rehabilitation pipe | tube can be provided.

It is sectional drawing which shows the strip | belt-shaped member which concerns on Embodiment 1 of this invention. It is explanatory drawing which shows in order the joining process of the strip | belt-shaped member which concerns on the form of FIG. It is a schematic diagram which shows the formation method of the rehabilitation pipe | tube using the strip | belt-shaped member which concerns on this invention. It is explanatory drawing which expands and shows the formation method of the said rehabilitation pipe | tube. It is sectional drawing which shows the strip | belt-shaped member which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows in order the joining process of the strip | belt-shaped member which concerns on the form of FIG. It is sectional drawing which shows the modification of the strip | belt-shaped member which concerns on Embodiment 2 of this invention. It is explanatory drawing which shows in order the joining process of the strip | belt-shaped member which concerns on the form of FIG. It is sectional drawing which shows the strip | belt-shaped member which concerns on Embodiment 3 of this invention. It is explanatory drawing which shows in order the joining process of the strip | belt-shaped member which concerns on the form of FIG. It is sectional drawing which shows the strip | belt-shaped member which concerns on Embodiment 4 of this invention. It is explanatory drawing which shows in order the joining process of the strip | belt-shaped member which concerns on the form of FIG. An example of a conventional belt-shaped member is shown, FIG. 13A is a cross-sectional view, and FIG. 13B is a cross-sectional view in a joined state. The other example of the conventional strip | belt-shaped member is shown, Fig.14 (a) is sectional drawing, FIG.14 (b) is sectional drawing of a joining state.

  Hereinafter, a strip member according to an embodiment of the present invention and a method for forming a rehabilitation pipe using the strip member will be described with reference to the drawings. 1, 2, and 5 to 12, the right side in the drawing is described as one side and the left side is described as the other side. Further, when the band-shaped member 1 is formed in a tubular shape, the upper side in these drawings is the radially outer side and the lower side is the radially inner side, so the upper side in the figure is the outer side of the band-shaped member 1 and the lower side in the figure is a band-like shape. It demonstrates as the inner side of the member 1. FIG.

(Embodiment 1)
FIG. 1 is a cross-sectional view schematically showing a belt-like member 1 according to the first embodiment. The band-shaped member 1 is, for example, for forming a rehabilitation pipe to be constructed in an embedded pipe, and is formed into a tubular body by being spirally wound and joining side edges.

  As shown in FIG. 1, the band-shaped member 1 includes a long band plate-shaped flat plate portion 2, a first hook portion 3 integrally formed on one side edge portion of the flat plate portion 2, and the other of the flat plate portion 2. And a water stop member 5 for filling a gap between the first hooking portion 3 and the second hooking portion 4.

  The flat plate portion 2 includes a plurality of ribs 21 on one side surface corresponding to the outside of the belt-like member 1. The rib 21 is erected continuously along the longitudinal direction of the flat plate portion 2 and has a substantially T-shaped cross section.

  The band-shaped member 1 is made of a material in which the flat plate portion 2, the first hooking portion 3, the second hooking portion 4, and the rib 21 are made of a synthetic resin such as polyvinyl chloride, polyethylene, or polypropylene alone or appropriately mixed. It is formed by processing means such as extrusion. As for the flat plate part 2, the surface and the inside may be reinforced with glass fiber etc. as needed.

  In the belt-like member 1 according to this embodiment, the first hooking portion 3 has a first groove portion 31 that opens to the outside of the belt-like member 1, and the second hooking portion 4 is open to the inside of the belt-like member 1. Two groove portions 41 are provided.

  The first hook 3 includes a belt-shaped first base 32, two first protrusions 33 projecting from the outer surface of the first base 32, and one central first protrusion 34. Have. The other edge portion of the first base portion 32 is connected to one edge portion of the flat plate portion 2. The first protrusion 33 adjacent to the rib 21 provided in the flat plate portion 2 has a tip edge bent in the rib 21 direction and has a bowl-shaped cross-sectional shape.

  The first hook 3 is formed with two first grooves 31 defined by a first protrusion 33 and a central first protrusion 34. The two first protrusions 33 are provided with a first engagement portion 301 and a second engagement portion 302 as engagement portions on the inner surface in the opposing direction. The first and second engaging portions 301 and 302 are provided in two stages in the thickness direction of the flat plate portion 2 in each first protrusion 33.

  The first engagement portion 301 is disposed opposite to the opening of the first groove portion 31 and is formed as a stepped portion having a one-sided arrow shape. The second engaging portion 302 is disposed to face the first base portion 32 and is formed as a step portion having the same shape as the first engaging portion 301. The central first ridge 34 between the two first ridges 33 is not provided with an engaging portion, and is formed with a smaller protrusion than the first ridge 33.

  The second hooking portion 4 includes a band-shaped second base portion 42, two second ridge portions 43 projecting from the inner surface of the second base portion 42 so as to face each other, and a connection portion 44. Have. The second hooking portion 4 is formed with two second groove portions 41 that are partitioned by a second base portion 42, a second protrusion portion 43, and a connection portion 44.

  In the belt-like member 1, the second base portion 42 is disposed outside the flat plate portion 2. The connecting portion 44 protrudes from the second base portion 42 toward the inner side of the band-shaped member 1 and is connected to the other end of the flat plate portion 2. Thus, the second hooking portion 4 is formed integrally with the flat plate portion 2. Further, the second groove portion 41 is provided so as to be opened inside the belt-shaped member 1. The second base portion 42 is formed so as to extend from the connection portion 44 to one side.

  A first engaged portion 401 and a second engaged portion 402 are formed on the outer surfaces of the second protrusions 43 and 43 so as to be connected in two stages as engaged portions. . A string-like water stop member 51 is provided as a water stop member in the second groove portion 41 on the other side, which is partitioned by the two second protrusions 43.

  The first engaged portion 401 is provided near the opening of the second groove portion 41, and the second engaged portion 402 is provided near the second base portion 42. The two first engaged portions 401 protrude in opposite directions, and are formed as stepped portions having a single-arrow shape with a narrowed cross section. The two second engaged portions 402 are similarly formed.

  A mark portion 36 is provided on at least one of the first hook portion 3 and the second hook portion 4. In the illustrated embodiment, the mark portion 36 is provided at a connection portion between the first protrusion 33 and the first base 32 on one side of the first hooking portion 3. The mark portion 36 is preferably visually recognized from the viewpoint of appearance, and is formed as a groove-like depression on the outer surface on one side of the first protrusion 33. The mark portion 36 is not limited to be formed in a concave groove shape, but may be a protrusion shape protruding to the outer surface. Moreover, the mark part 36 may be a colored part in which an identification color is given to the part. The mark portion 36 is formed continuously in the longitudinal direction of the band-shaped member 1.

The string-like water blocking member 51 is disposed in the second groove portion 41 located on the other side of the two second groove portions 41 along the longitudinal direction. The string-like water-stopping member 51 includes a core material 511 that can adjust the amount of deformation in the axial direction, and a cover 512 made of a synthetic resin that covers the surface of the core material 511 and has viscoelasticity. Thus, string-like water-shutoff member 51 is hardly deformed Ri tensile axially, perpendicular to the axis has a viscoelasticity.

  As the material of the covering 512, general synthetic resins generally used as an O-ring and having viscoelastic properties can be adopted, and a water-stop function such as a hot-melt adhesive or a solvent-based adhesive can be used. It is also possible to use a material that develops. As the synthetic resin having viscoelastic properties, a material that does not cause plastic deformation in the elastic deformation region in the short term or in the long term and that maintains the pressing force necessary for water stopping for a long time is preferable.

  The hardness of the covering 512 is, for example, preferably in the range of type A durometer hardness of 30 to 100, and more preferably in the range of hardness 50 to 90. If the hardness is less than 30, the cross-section of the covering 512 is easily deformed, and in order to develop a pressing force on the string-like water stopping member 51, the second groove portion 41 in which the string-like water stopping member 51 is disposed has high dimensional accuracy. Will be required. When the hardness exceeds 100, the amount of cross-sectional deformation of the covering 512 is reduced, and the second groove 41 is locally pressed by the string-like water blocking member 51, so that the dimensional accuracy of the second groove 41 is increased. If it is not increased, it will be difficult to evenly express the water stop function and the pressing force. For this reason, it is preferable that the hardness of the covering 512 is in the above range.

  The core material 511 is preferably made of metal, glass fiber, synthetic resin material, or a composite material thereof. The core material 511 and the covering body 512 are preferably heat-sealed or bonded, but when heat-bonding or bonding is difficult, for example, a plurality of core materials 511 are wound to form a braid. Also good. In this case, it is preferable to form irregularities on the surface of the core material 511 to strengthen the adhesion between the core material 511 and the cover 512 and suppress the deformation of the cover 512 in the axial direction.

  The string-like water blocking member 51 is required to have viscoelasticity in the direction perpendicular to the axis and to be elastically deformed along the shape of the second groove portion 41. Therefore, it is preferable that the occupied sectional area of the core material 511 with respect to the total sectional area of the string-like water blocking member 51 is determined within a range in which elastic deformation can be expressed. For example, the occupied sectional area of the core material 511 with respect to the total sectional area of the string-like water blocking member 51 is preferably in the range of 5 to 70%, more preferably in the range of 10 to 40%. When the occupied cross-sectional area is less than 5%, it is difficult to ensure the strength of the core material 511 and the interfacial adhesion of the covering 512. When the occupied cross-sectional area exceeds 70%, the amount of cross-sectional deformation of the covering 512 becomes small, and the water stop function and the pressing force can be uniformly expressed as in the case where the hardness of the covering 512 exceeds 100. It becomes difficult.

  In the illustrated embodiment, a string-shaped waterstop member 51 having a circular cross section in which a surface of a core material 511 having a circular cross section made of steel wire is covered with a covering body 512 made of a synthetic resin material is continuously provided in the second groove portion 41. Are arranged. In this way, by using the string-like water stopping member 51 having the core material 511 made of steel wire, the string-like water stopping member 51 of the string-like water stopping member 51 can be obtained without bonding the string-like water stopping member 51 to the second groove portion 41. The extension in the axial direction can be suppressed by the characteristic itself, and the arrangement work of the string-like water blocking member 51 can be easily performed.

  FIG. 2A to FIG. 2C are explanatory views sequentially showing the joining process of the band-shaped member 1. As shown in FIG. 2 (a), the elongated belt-like member 1 wound spirally has one side edge portion on the other side edge portion of the belt-like member 1 wound beforehand. Arranged to overlap. The first hooking portion 3 overlaps the second hooking portion 4 on which the string-like water blocking member 51 is disposed.

  As shown in FIG. 2 (b), when the first hooking portion 3 and the second hooking portion 4 of the belt-like member 1 are pressed, the central first protrusion 34 of the first hooking portion 3 is moved. The second hook portion 4 is fitted into the second groove portion 41 on the other side. At the same time, the first protrusion 33 on one side of the first hook 3 fits into the second groove 41 on one side of the second hook 4. The second protrusion 43 on the other side of the second hook 4 fits in the first groove 31 on the other side of the first hook 3. Thereby, the first engaging portion 301 of the first hooking portion 3 and the first engaged portion 401 of the second hooking portion 4 are engaged with each other.

  At this time, the mark portion 36 provided in the first hooking portion 3 does not enter the second groove portion 41 of the second hooking portion 4 and is located outside the second groove portion 41 on one side. Therefore, when the belt-like member 1 is viewed from the inside, the mark portion 36 can be visually recognized. If the mark portion 36 can be visually recognized in this way in the joining process of the first hook portion 3 and the second hook portion 4, the first engaging portion 301 of the first hook portion 3 in the first stage is used. And the first engaged portion 401 of the second hooking portion 4 can be determined to be engaged with each other.

  Further, in the state shown in FIG. 2 (b), the band-like member 1 is formed in a tubular body by joining the first hooking portion 3 and the second hooking portion 4, but the first hooking portion 3 and the second hooking portion 1 are joined. There is a gap between the connecting portion 4 and the first engaging portion 301 can slide in the axial direction along the first engaged portion 401. That is, the first hook portion 3 is in a state of being movable along the second groove portion 41 of the second hook portion 4. Therefore, at this stage, it is possible to appropriately adjust the tube diameter of the tubular body made of the band-shaped member 1 to expand or contract the diameter.

  Next, as shown in FIG. 2 (c), the first hook 3 is further fitted into the second hook 4, and the central first protrusion 34 of the first hook 3 is string-like. It is crimped | bonded to the water stop member 51, and the clearance gap with the 2nd hooking part 4 is filled up. The first engaging portion 301 is locked to the second engaged portion 402, and the second engaging portion 302 is locked to the first engaged portion 401. Thereby, the 1st hanging part 3 and the 2nd hanging part 4 are fixed in the joined state. Moreover, the tube diameter of the tubular body which consists of the strip | belt-shaped member 1 is fixed, and a rehabilitation pipe | tube is formed.

  At this time, the mark portion 36 provided in the first hook 3 enters the second groove 41 of the second hook 4 and is hidden. That is, the connection portion 44 of the second hooking portion 4 covers the outer surface of the mark portion 36. Therefore, when the band-like member 1 is viewed from the inside thereof and the mark portion 36 is not visually recognized, it is determined that the first hooking portion 3 and the second hooking portion 4 are completely fitted and joined. be able to.

  It is sufficient that the mark portion 36 is provided on at least one of the first hanging portion 3 and the second hanging portion 4. For example, the mark portion 36 is provided on the second hanging portion 4 and viewed from the outside of the band-shaped member 1. You may provide so that it may be visually recognized. Moreover, in order to improve the rigidity as a rehabilitation pipe | tube, the strip | belt-shaped member 1 may be provided with the reinforcement member so that it may straddle between the ribs 21 or the rib 21. FIG. Further, the rib 21 is not limited to a substantially T-shaped cross section, and may be, for example, an inverted L-shaped cross section with a tip portion bent in one direction.

(Method for forming rehabilitation tube)
A method for forming a rehabilitation pipe using the belt-like member 1 will be described.

  The belt-like member 1 is spirally wound, and the first hooking portion 3 and the second hooking portion 4 are joined to form a tubular body, whereby the rehabilitating pipe 100 having a desired pipe diameter can be obtained. A pipe making machine is used to wind the belt-shaped member 1. Various structures can be applied to the pipe making machine.

  For example, as schematically shown in FIG. 3, the rehabilitation pipe 100 can be formed using a pipe making machine including a pinch roller 7 that is driven and rotated and a joining roller 8 that presses the belt-like member 1. In this case, the belt-like member 1 sandwiched between the pinch rollers 7 is sent in a spiral toward the inner surface of the pipe line to be rehabilitated. The fed belt-like member 1 is disposed on the side edge of the belt-like member 1 that has already been wound into a tubular body, and the first hooking portion 3 and the second hooking portion 4 overlap (FIG. 2 (a). )reference).

  FIG. 4 is an explanatory view showing an example of the joining roller 8. The joining roller 8 is disposed inside the belt-like member 1 and rotates while contacting the flat plate portion 2. A reinforcing member 6 is attached to the outer side of the illustrated belt-like member 1. The reinforcing member 6 is formed by bending a metal or synthetic resin band plate material so as to have a substantially W-shaped cross section, and is engaged with the rib 21 or disposed so as to straddle the rib 21.

  The joining roller 8 includes a plurality of rollers having different outer diameters, and includes a first roller 81 and a second roller 82 in the illustrated embodiment. The first roller 81 includes a small-diameter portion 811 that rotates in contact with the belt-shaped member 1 in the first round, and a large-diameter portion 812 that rotates in contact with the belt-shaped member 1 in the second round. And a large-diameter portion 812, a stepped portion 813 is formed in the circumferential direction. The step portion 813 has a step corresponding to the difference in outer diameter between the small diameter portion 811 and the large diameter portion 812, and the first engaging portion 301 and the first engaged portion 401 shown in FIG. It is provided with a step corresponding to the pushing amount for meshing.

  The first roller 81 includes a small diameter portion 811 and a large diameter portion 812 on the same roller shaft 83. The base portion of the roller shaft 83 is disposed on the other side of the belt-like member 1 in the first round and is supported in a cantilever manner. A pressing member 84 having a groove shape in cross section is provided outside the stepped portion 813. The pressing member 84 supports both the first hooking portion 3 and the second hooking portion 4 from the outside, so that the pressing force of the first roller 81 can be transmitted to the belt-like member 1 more effectively.

  The pipe making machine is further provided with a second roller 82 that presses one side of the belt-like member 1 in the second round as the joining roller 8. The second roller 82 is provided so as to be in contact with the first base portion 32 of the first hooking portion 3 of the band-shaped member 1, and has an outer diameter that is equal to or larger than the outer diameter of the large diameter portion 812. The second roller 82 is provided coaxially with the first roller 81 in FIG. 4. However, the second roller 82 is not limited to this. It may be arranged at other locations in the direction.

  The joining roller 8 presses the first hooking portion 3 and the second hooking portion 4 from the inside while moving in the circumferential direction of the pipe line, whereby the first engaging portion 301 and the first engaged portion. 401 is locked (temporary joining step: see FIG. 2B). The mark part 36 is in a state that can be visually recognized in appearance.

  The band-shaped member 1 that has undergone the temporary joining step is formed into a tubular body by joining the first hooking portion 3 and the second hooking portion 4. Subsequently, the inner diameter of the tubular body is adjusted by relatively sliding the first hook portion 3 and the second hook portion 4 in the circumferential direction (adjustment step).

  As described above, in the belt-like member 1, although the first hook portion 3 and the second hook portion 4 are locked, the first engaging portion 301 and the first engaged portion 401 slide with each other. And is in a state capable of moving in the circumferential direction. Since the belt-like member 1 is a long belt-like member having rigidity, the belt-like member 1 has an elastic repulsive force to extend the bent shape when it is bent in a spiral shape. Therefore, when the pipe making machine rotates and the position of the joining roller 8 moves in the circumferential direction, and the pressing of the joining roller 8 to the first hooking portion 3 and the second hooking portion 4 disappears, the belt-like member 1 is It spreads so as to stick to the inner surface of the pipe, and sliding occurs between the first hook portion 3 and the second hook portion 4. Thereby, the tube diameter of the formed tubular body is adjusted to a size corresponding to the tube diameter of the rehabilitation target pipeline. Further, for example, if an arc-shaped guide member is provided on the inner surface of the rehabilitation target pipe line, the rehabilitation pipe 100 having a curvature along the guide member can be formed by this adjustment process.

  Next, the first hooking portion 3 and the second hooking portion 4 in a state where the tube diameter is adjusted are further pressed by the second roller 82 of the joining roller 8 (main joining step: see FIG. 2C). ). As a result, the first engaging portion 301 is locked to the second engaged portion 402, the second engaging portion 302 is locked to the first engaged portion 401, and the first hooking portion 3 and the first engaging portion 3 The two hooking parts 4 are completely joined. The strip-shaped member 1 wound spirally becomes a tubular body and forms the rehabilitation tube 100.

  The joining roller 8 is preferably provided with a positioning member 85 that holds the other side of the belt-shaped member 1 in the first round at the base of the roller shaft 83. As shown in FIG. 4, the positioning member 85 is formed in a saddle shape in cross section, holds the second base portion 42 of the second hooking portion 4, and engages with the reinforcing member 6 stacked on the flat plate portion 2 to be a belt-like member. 1 misalignment is prevented.

(Embodiment 2)
The band-shaped member 1 according to the second embodiment is different from the first embodiment in the configuration of the engaging portion in the first hooking portion 3 and the engaged portion in the second hooking portion 4. The band-shaped member 1 according to the second embodiment will be described focusing on a configuration different from those of the first embodiment.

  FIG. 5 is a cross-sectional view showing the belt-like member 1 according to the second embodiment. In the band-shaped member 1 of this form, in the first hooking portion 3, the first engaging portion 301 is provided in the same manner as in the first embodiment, but the second engaging portion 302 is opposed to the first projecting ridge. Only the first protrusion 33 on the other side of the portion 33 is provided. The second engaging portion 302 faces the first groove portion 31 and protrudes closer to the first base portion 32, and is formed as a stepped portion having a one-sided arrow shape that is narrowed upward. Thereby, the first engaging portion 301 and the second engaging portion 302 are provided in the first protrusion 33 on the other side so as to be continuous in two steps in the thickness direction of the flat plate portion 2.

  In the second hooking portion 4, the first engaged portion 401 is provided in the same manner as in the first embodiment. On the other hand, the second engaged portion 402 is provided only in the middle second protrusion 43 among the three second protrusions 43. The second engaged portion 402 is formed on one surface of the second protrusion 43 near the second base, and is formed as a stepped portion having a one-arrow shape with a narrowed cross section. As a result, a first engaged portion 401 and a second engaged portion 402 are formed in the middle second protrusion 43 in two steps in the thickness direction of the flat plate portion 2. The string-like water blocking member 51 is provided in the second groove portion 41 on the other side as in the first embodiment.

  As shown in FIG. 6A, the belt-like member 1 is wound so that the second hooking portion 4 and the first hooking portion 3 overlap each other. Next, as shown in FIG. 6B, the first engaging portion 301 of the first hooking portion 3 and the first engaged portion 401 of the second hooking portion 4 engage with each other. In this state, the belt-like member 1 is joined to the first hook portion 3 and the second hook portion 4 to form a tubular body, and the first hook portion 3 is formed in the second groove portion 41 of the second hook portion 4. The tube diameter of the tubular body can be adjusted as appropriate.

  Next, as shown in FIG. 6C, the first engaging portion 301 provided on the first protruding portion 33 on one side is provided on the second protruding portion 43 in the middle of the second hooking portion 4. The second engaged portion 402 is locked. The second engaging portion 302 provided on the first ridge portion 33 on the other side is locked to the first engaged portion 401 provided on the second ridge portion 43 on the other side. The central first protrusion 34 of the first hook 3 is press-bonded to the string-like water blocking member 51 and fills the space between the second hook 4. Thereby, the 1st hook part 3 and the 2nd hook part 4 are fixed in the joined state, and the tube diameter as a tubular body by the strip | belt-shaped member 1 is fixed.

  As described above, the belt-like member 1 does not have to be provided with the first engaging portion 301 and the second engaging portion 302 provided in the first hooking portion 3 for all of the plurality of first protrusions 33. , Any one of the first protrusions 33 may be provided in two stages. Similarly, the first engaged portion 401 and the second engaged portion 402 provided in the second hooking portion 4 may not be provided for all of the plurality of second protrusions 43, The second protrusion 43 may be provided in two stages.

  As shown in FIG. 7, the second engagement portion 302 may be provided only on one side of the two first protrusions 33. Further, the second engaged portion 402 may be provided only on the other side of the two second protrusions 43. Also in this case, as shown in FIGS. 8A to 8C, the first hooking portion 3 and the second hooking portion 4 of the belt-like member 1 can be joined in two stages. After adjusting the tube diameter of the tubular body in the state shown in FIG. 8 (b), a complete joined state shown in FIG. 8 (c) can be obtained.

(Embodiment 3)
The belt-like member 1 according to the third embodiment is different from that of the first and second embodiments in the first hooking portion 3 and the second hooking portion 4. The belt-like member 1 according to the third embodiment will be described focusing on the configuration of the first hooking portion 3 and the second hooking portion 4.

  As shown in FIG. 9, the first hooking portion 3 of the belt-like member 1 is provided on the outer surface of the flat plate portion 2 so as to protrude in the same direction as the rib 21, and is a convex shape that continues in a convex shape along the longitudinal direction. A portion 35 is provided. An engaging portion 353 is provided at the tip of the convex portion 35. The engaging portion 353 is formed so as to protrude on both surfaces of the one surface and the other surface of the convex portion 35, and is provided at the tip portion of the convex portion 35 so as to form a substantially triangular cross-sectional shape. .

  The 2nd hooking part 4 is provided with the groove-shaped part 45 of the concave groove shape which the 1st hooking part 3 can insert in an inside. The groove-like portion 45 is opened in the inner direction of the belt-like member 1. The groove-like portion 45 includes a first engaged portion 451 and a second engaged portion 452 as engaged portions with which the engaging portion 353 is engaged. The first engaged portion 451 is provided near the opening of the groove-like portion 45 and protrudes from the groove inner surface. The second engaged portion 452 is provided near the inner portion of the groove-like portion 45 and protrudes so as to face the inner surface of the groove. The first engaged portion 451 and the second engaged portion 452 are both arranged in parallel along the longitudinal direction of the groove-like portion 45.

  Thereby, the grooved portion 45 is formed with the first engaged portion 451 and the second engaged portion 452 in two steps in the depth direction of the groove (upward in the drawing in FIG. 9). ing. The groove inner surface of the groove-like portion 45 is formed in a groove shape corresponding to the cross-sectional shape of the engaging portion 353.

  A water stop member 5 is provided in the groove 45 of the second hook 4. In the illustrated embodiment, the water stop member 5 is disposed in the back of the groove-like portion 45. The water-stop member 5 is disposed along the longitudinal direction of the belt-shaped member 1 and is made of a synthetic resin material having viscoelasticity. For example, the water-stop member 5 is made of a material generally used for a sealing material or an O-ring. Is preferred. Further, the water-stop member 5 may be formed of a material that exhibits a water-stop function, such as a hot-melt adhesive or a solvent-based adhesive.

  As shown in FIG. 10 (a), the spirally wound belt-like member 1 is such that one side edge overlaps the other side edge of the belt-like member 1 wound in advance. It arrange | positions and the 1st hanging part 3 is applied to the 2nd hanging part 4 of the strip | belt-shaped member 1 which precedes.

  As shown in FIG. 10B, the convex portion 35 of the first hooking portion 3 is pressed by the groove-like portion 45 of the second hooking portion 4 when the belt-like member 1 is pressed outward. Insert. The engaging portion 353 is engaged with the first engaged portion 451 at the first stage located on the opening side of the groove-like portion 45 in the inserted convex portion 35. When the engaging portion 353 is locked to the first engaged portion 451, the first hooking portion 3 and the second hooking portion 4 are joined and connected, and the belt-like member 1 becomes a continuous tubular body.

  In this state, although the belt-like member 1 forms a tubular body, the first hooking portion 3 is in a state where it can move with respect to the second hooking portion 4. That is, in this state, the engaging portion 353 of the convex portion 35 can slide along the first engaged portion 451 of the groove-like portion 45, so that the first hooking portion 3 is the second hooking portion 4. It is possible to move along the groove 45. For this reason, it is possible to appropriately adjust the tube diameter of the tubular body made of the band-shaped member 1 to increase or decrease the diameter.

  Next, the convex part 35 of the first hook part 3 is further pressed against the groove part 45 of the second hook part 4. As shown in FIG. 10 (c), the convex portion 35 is pushed into the groove portion 45, and the engaging portion 353 is located at the second stage from the opening side of the groove portion 45. Lock to the mating portion 452. The tip of the convex portion 35 is pressed against and closely contacts the water stop member 5. Thereby, the engaging part 353 becomes immovable in the groove-like part 45, and is fixed in a state where the first hooking part 3 and the second hooking part 4 are joined. Further, the tube diameter is fixed as a tubular body by the belt-like member 1.

  In the band-shaped member 1 according to this embodiment, the cross-sectional shape of the convex portion 35 of the first hooking portion 3 is formed in a substantially arrow shape, and forms a constricted shape, while the groove-like portion 45 of the second hooking portion 4. The first and second engaged portions 451 and 452 are connected in two stages to form a groove section having a substantially flared shape. For this reason, the convex portion 35 of the first hook portion 3 can be easily fitted into the groove portion 45 of the second hook portion 4. When the first hooking portion 3 is fitted into the second hooking portion 4, the engaging portion 351 of the convex portion 35 is engaged with the first engaged portion 451 or the second engaged portion 452 of the groove-like portion 45. Since they are sandwiched from both sides and locked together, they are prevented from coming off from the groove 45.

  Further, the water stop member 5 is pressed upward in the figure in FIG. 10C by the tip of the convex part 35 in the groove part 45 and is held between the groove part 45 and the convex part 35. While exhibiting viscoelastic properties. Thereby, the clearance gap between the 1st hanging part 3 and the 2nd hanging part 4 is filled, and a water stop is ensured, keeping these joining states firmly.

(Embodiment 4)
In the belt-like member 1 according to the fourth embodiment, the engaging portion in the convex portion 35 of the first hook portion 3 and the engaged portion in the groove portion 45 of the second hook portion 4 are the same as those in the third embodiment. Since these are different from those described above, the configuration different from those of the third embodiment will be mainly described.

  As shown in FIG. 11, the belt-like member 1 includes a first engaging portion 351 and a second engaging portion 352 as engaging portions on the convex portion 35 of the first hooking portion 3. The first engaging portion 351 is provided on both surfaces of the tip portion of the convex portion 35. The second engaging portion 352 is provided on the other surface of the convex portion 35 so as to face the rib 21 and project in a substantially single-arrow cross section. Accordingly, the first engagement portion 351 and the second engagement portion 352 are connected to the first hooking portion 3 so that the other surface of the convex portion 35 is connected in two stages in the thickness direction of the flat plate portion 2. And are provided.

  In the second hooking portion 4, a first engaged portion 451 and a second engaged portion 452 protrude from the inner surface of the groove-like portion 45. The first engaged portions 451 protrude from the inner surface of the groove-like portion 45 near the opening so as to face each other. The second engaged portion 452 is provided in a protruding manner on one surface (the surface near the rib 21) among the opposing inner surfaces of the groove-like portion 45, and is not provided on the other surface. As in the first embodiment, the water stop member 5 is disposed at the back of the groove 45.

  In such a belt-like member 1, when wound spirally, the convex portion 35 of the first hooking portion 3 overlaps the groove-like portion 45 of the second hooking portion 4 as shown in FIG. Are arranged as follows. As shown in FIG. 12B, the belt-like member 1 is pressed from the inside, so that the convex portion 35 of the first hooking portion 3 is pressed by the groove-like portion 45 of the second hooking portion 4. Insert. In the convex portion 35, the first engaging portion 351 is engaged with the first engaged portion 451 in the first stage located on the opening side of the groove-like portion 45. When the first engaging portion 351 is locked to the first engaged portion 451, the first hooking portion 3 and the second hooking portion 4 are joined and connected, and the belt-like member 1 is a continuous tubular body. Become.

  Next, the convex part 35 of the first hook part 3 is further pressed against the groove part 45 of the second hook part 4. As shown in FIG. 12C, the convex portion 35 is pushed into the groove portion 45, and the first engagement portion 351 is located at the second stage from the opening side of the groove portion 45. While being engaged with the engaged portion 452, the second engaging portion 352 is engaged with the first engaged portion 451 located on the opening side of the groove-like portion 45. The tip of the convex portion 35 is pressed against and closely contacts the water stop member 5. Thereby, the convex part 35 becomes immovable in the groove part 45, and is fixed in a state where the first hook part 3 and the second hook part 4 are joined. Further, the tube diameter is fixed as a tubular body by the belt-like member 1.

  Even in the belt-like member 1 according to this embodiment, the first hooking portion 3 can move along the groove-like portion 45 of the second hooking portion 4 in the state shown in FIG. The tube diameter of the tubular body formed by the belt-like member 1 can be changed as appropriate.

  As described above, according to the present invention, since the tube diameter can be changed after the tubular body is formed, the workability is improved, and the first hanging portion 3 and the second hanging portion 4 are improved. Can be reliably fitted together to form the rehabilitation pipe 100 with high reliability.

  The present invention is not limited to the above embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof. In the said embodiment, although the example which provided at least one of the engaging part of the strip | belt-shaped member 1 and the to-be-engaged part connected in two steps was shown, it is not restricted to this, An engaging part and an to-be-engaged part are shown. At least one may be provided in three or more stages. Moreover, although the example which provides the rib 21 in the strip | belt-shaped member 1 was shown, you may be comprised by the flat flat plate part 2 which is not restricted to this but is provided with the rib 21. FIG. In addition, the water stop member 5 is not only provided in the second groove portion 41 and the groove-like portion 45 but also, for example, heat-sealed or bonded to the distal end portions of the central first protrusion 34 and the convex portion 35. Also good. Furthermore, the pipe making machine for forming the rehabilitation pipe 100 is not limited to the one having the above-described configuration, and any configuration is possible as long as the pipe making machine can perform the temporary joining process, the adjusting process, and the main joining process. There may be.

  The above-described embodiments are merely examples in all respects and should not be interpreted in a limited manner. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.

  The present invention can be used to rehabilitate existing pipelines.

DESCRIPTION OF SYMBOLS 1 Band-shaped member 2 Flat plate part 21 Rib 3 1st hook part 31 1st groove part 32 1st base part 33 1st protrusion part 34 Central 1st protrusion part 35 Convex part 36 Marking part 351 Engagement part 301,351 1st 1 engaging portion 302, 352 second engaging portion 4 second hooking portion 41 second groove portion 42 second base portion 43 second protrusion 44 connecting portion 45 groove-like portions 401, 451 first engaged portion 402, 452 Second engaged portion 5 Water stop member 51 String-like water stop member 6 Reinforcement member 7 Pinch roller 8 Joining roller 81 First roller 811 Small diameter portion 812 Large diameter portion 813 Stepped portion 82 Second roller 100 Rehabilitation pipe

Claims (5)

A band-shaped member that is wound in a spiral and becomes a rehabilitation pipe,
A flat plate portion that is joined to the side edges to form a tubular body;
First and second hooking portions that are provided along the longitudinal direction at both side edges of the flat plate portion and can be joined to each other;
An engaging portion protrudes from the first hanging portion, and an engaged portion that engages with the engaging portion protrudes from the second hanging portion.
The first hook portion includes a belt-shaped first base, two first ridges projecting from one surface of the first base, and two sections defined by the first base and the first ridge. Having a first groove,
The second hooking portion includes a belt-like second base portion extending substantially parallel to the first base portion, two second protrusions projecting on the other surface of the second base portion, the second base portion, and the second base portion. Having one or more second grooves defined by two ridges;
The first groove portion and the second groove portion open in opposite directions,
The engaging portion is provided in one or two steps in the thickness direction of the flat plate portion on the inner surface in the facing direction of the first protrusion.
The engaged portion, the outside surface of the opposite direction of the second protrusions, the belt-shaped member characterized that you have provided in two stages or one stage in a thickness direction of said plate. In the belt-shaped member according to claim 1,
The first hanging portion includes two first groove portions that are partitioned by a central first protrusion portion between two first protrusion portions,
The second hooking portion includes two second protrusions that fit into two first groove portions,
A band-shaped member provided so that a second protrusion on one side fits in the first groove on one side and a second protrusion on the other side fits in the first groove on the other side. . In the belt-shaped member according to claim 2 ,
About the number of stages of the engaging portion and the engaged portion,
The sum of the number of steps of the engaging portion provided facing the first groove on one side and the number of steps of the engaged portion of the second protrusion on one side;
The engaging portion and the engaging portion so that the sum of the number of steps of the engaging portion provided facing the first groove portion on the other side and the number of steps of the engaged portion of the second protruding portion on the other side is the same. A belt-shaped member provided with the engaged portion . In the strip | belt-shaped member as described in any one of Claims 1-3,
A connecting portion between the first ridge portion on one side and the first base portion, and a mark portion is provided on an outer surface of the first ridge portion ,
The marker unit, when the state of meshing via a first stage of the engaging portion or the engaged portion continuous to the plurality of stages to be recognized, and wherein the hidden in a state meshed through a 2-stage A belt-like member. A method for forming a rehabilitation pipe using the belt-like member according to any one of claims 1 to 4 ,
The engaging portion and the engaged portion are connected to the first engaging portion and the second engaging portion, which are adjacent to each other by spirally winding the belt-like member, and the engaging portion or the engaged portion are connected in a plurality of stages. A temporary joining step in which the band-shaped member is formed into a tubular body by meshing via the first stage of the joint portion;
The first engagement portion is displaced relative to the second engagement portion in the circumferential direction of the tubular body by sliding the engagement portion and the engaged portion relative to each other in the longitudinal direction of the belt-shaped member , An adjustment step of changing the tube diameter of the tubular body;
The engaging portion and the engaged portion are engaged with each other via a plurality of stages of engaging portions or the second and subsequent stages of the engaged portion, and the first hooking portion and the second hooking portion are joined. A method for forming a rehabilitation pipe, comprising a main joining step.

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