JP6267585B2 - Pipe making components - Google Patents

Description

  The present invention relates to a pipe-making member that is spirally wound and formed into a tubular shape, and lines the inner surface of an existing pipe.

  Conventionally, as a method of rehabilitating existing pipes such as aging sewer pipes, water pipes, agricultural water pipes, gas pipes, etc., a long strip-shaped pipe-forming member (also called a profile) is spirally wound in the existing pipe. There has been proposed a method of manufacturing a rehabilitated pipe in an existing pipe by sequentially joining side edges of adjacent pipe-making members by winding (for example, Patent Document 1).

  As shown in FIG. 10 (a view showing a cross-section in a direction orthogonal to the longitudinal direction of the pipe-making member and a state in which the pipe-making members are joined to each other) as a configuration of a conventional general pipe-making member. In addition, a plurality of ribs b, b,... Having a T-shaped cross section, for example, are provided on the surface of the pipe-making member a. For this reason, in a state where the rehabilitated pipe c is manufactured, the rib b is erected on the outer surface of the rehabilitated pipe c. Further, a backfilling material d such as mortar is filled between the rehabilitation pipe c and the existing pipe (not shown). Thereby, the rib b exhibits an anchor effect by being embedded in the backfill material d, and as a result, the rehabilitation pipe c, the backfill material d and the existing pipe are integrated to form a composite pipe. .

JP 2012-171124 A

  By the way, it is preferable that the rehabilitation pipe is configured to be extendable in the pipe axis direction as a measure for avoiding breakage of the rehabilitation pipe when an external force caused by an earthquake or ground subsidence acts in the pipe axis direction of the rehabilitation pipe. . In the general pipe-making member a shown in FIG. 10, the pipe-making members a and a are slightly movable relative to each other in the tube axis direction at the joint portion e between the pipe-making members a and a. Thus, the rehabilitation pipe c can be extended in the pipe axis direction.

  However, in order to obtain an extension amount corresponding to a large external force, it is necessary to narrow the interval (joining pitch) between the joining portions e and e. As a result, the width dimension of the pipe-making member a is shortened, and the number of windings of the pipe-making member a necessary for obtaining the rehabilitated pipe c having a desired length in the pipe-making work is increased, leading to deterioration of workability. become.

  As means for enabling the rehabilitated tube to extend in the tube axis direction without narrowing the joining pitch, the inventors of the present invention have considered the ribs having a bellows shape. In other words, when an external force in the tube axis direction is applied to the rehabilitated tube, the structure in which the bellows-shaped rib is deformed so as to extend in the tube axis direction to extend the rehabilitated tube has been considered. In this case, the bellows-shaped rib (for example, a rib bent in a mountain shape toward the outside of the rehabilitation pipe) is deformed so that the dimension in the height direction is shortened when extending in the pipe axis direction ( It will be deformed from the outside to the inside of the rehabilitation tube).

  However, as described above, the rib has a function of exerting an anchor effect on the backfill material. This anchor effect hinders the deformation of the rib, which shortens the dimension in the height direction described above. Thus, it was difficult to make the rib exhibit the anchor effect and to extend the rib in the tube axis direction when an external force is applied.

  The inventor of the present invention has considered the provision of these functions in the rib, and has reached the present invention.

  The present invention has been made in view of the above points, and the object of the present invention is to provide the rib with a function of exhibiting the anchor effect and a function of extending in the tube axis direction when an external force is applied. An object of the present invention is to provide a pipe-making member capable of achieving the above.

The solving means of the present invention taken to achieve the above object is premised on a pipe-making member that is spirally wound to be formed into a tubular shape and that lines the inner surface of an existing pipe. The tube-forming member is provided with a long belt-like substrate and ribs provided along the longitudinal direction of the surface of the substrate. The rib is provided with a rib main body erected on the surface of the substrate and an anchor portion provided on the tip side in the erected direction of the rib main body. Moreover, the length of the width direction of the member for pipe making is extended by deform | transforming the said rib main body so that the dimension of the height direction which is the standing direction may be shortened. And when the said rib main body deform | transforms by the effect | action of the external force of the direction which expands the length of the width direction of the said pipe making member between the said rib main body and the said anchor part, the said rib main body and the said anchor part A separation part is provided to separate The separating portion is formed by engaging the rib main body and the anchor portion. When the rib main body is deformed by the action of the external force, the engagement between the rib main body and the anchor portion is performed. It is configured to come off.
Further, as another configuration of the separation portion, it is constituted by a thick portion smaller than the thickness of the rib main body and the anchor portion, and when the rib main body is deformed by the action of the external force, it breaks, The thing which becomes the structure which isolate | separates the said rib main body and the said anchor part is also mentioned.
Further, as another configuration of the separation portion, the rib main body and the anchor portion are connected by a material having lower strength than these constituent materials, and the rib main body is acted on by the action of the external force. Examples include a structure in which the rib main body and the anchor portion are separated from each other by breaking when deformed.

  With this specific matter, the rib main body and the anchor portion are connected in a state where the pipe-forming member is formed in a tubular shape and the inner surface of the existing pipe is lined. Generally, a backfilling material is filled between a pipe made of a pipe-making member (hereinafter referred to as a rehabilitation pipe) and an existing pipe. Therefore, the rehabilitation pipe is formed by an anchor effect by an anchor portion embedded in the backfilling material. It is stably held in the existing pipe. On the other hand, in this lining state, when an external force (external force in the tube axis direction of the rehabilitation pipe) is applied in the direction that extends the length in the width direction of the pipe-making member, the rib body receives the external force and increases its height. Deforms to shorten the direction dimension. Due to this deformation, the rib main body and the anchor portion are separated at the separation portion. As a result, the anchor effect by the anchor portion is not exerted on the rib main body, and the rib main body is easily subjected to the deformation (deformation that shortens the height of the rib main body). As a result, the length in the tube axis direction of the rehabilitated tube is increased by extending the length in the width direction of the tube-forming member, and for example, breakage of the rehabilitated tube can be suppressed. As described above, when the external force is not applied, the rehabilitation pipe is stably held in the existing pipe by the anchor effect by the anchor portion, and when the external force is applied, the length in the width direction of the pipe-forming member is increased. It is possible to extend the rehabilitation tube.

Moreover, according to the structure of each separation part mentioned above, it becomes possible to easily separate the rib main body and the anchor part by the action of the external force, and the reliability of the operation of extending the length in the width direction of the pipe-forming member. Sex can be secured.

  Specific examples of the substrate and the rib main body include the following. The said board | substrate is comprised by the some board | substrate part divided | segmented in the width direction. Further, the rib main body is provided with a pair of deforming portions, and the base end portions of the deforming portions are continuously connected to the end edges of the substrate portions adjacent to each other, and the distal end portions of the deforming portions are continuously connected to each other. And it is set as the structure which deform | transforms so that each deformation | transformation part may fall down by the effect | action of the said external force, and the dimension of the height direction of a rib main body may become short.

  Thereby, when the said external force acts, each deformation | transformation part falls down and the dimension of the height direction of a rib main body becomes short. That is, the tip end portion of the rib body moves in the direction of retreating from the anchor portion. As a result, the rib main body and the anchor portion are quickly separated, and the length in the width direction of the pipe-forming member is extended.

  In this case, it is preferable that each of the deforming portions has a shape retreating from the deforming portion on the other side from the distal end side toward the proximal end side, and a hollow portion is provided between the deforming portions.

  According to this, when each of the above-described deforming portions falls down, these deforming portions can be deformed so as to enter the hollow portion, and this deformation becomes easy. That is, the rib body can be easily deformed to shorten the height direction dimension, and the length in the width direction of the pipe-making member can be quickly extended.

  Moreover, the following is mentioned as a specific structure at the time of comprising the said board | substrate by a some board | substrate part. That is, the edge of the said board | substrate part adjacent to each other is faced | matched, and it is set as the structure which overlap | superposed the this slanting surface which inclined only the predetermined angle with respect to the width direction of the said board | substrate.

  According to this, even if the external force acts and the length in the width direction of the pipe-forming member is extended, if the extension amount is small, the inner peripheral surface of the rehabilitated pipe can be maintained smoothly, and smooth water flow Can be secured.

  In the present invention, the rib main body and the anchor portion can be separated when an external force is applied to the pipe-making member. As a result, the rib can be provided with a function of exerting the anchor effect when no external force is applied and a function of extending in the tube axis direction when the external force is applied.

Fig.1 (a) is sectional drawing which shows the member for pipe making concerning Embodiment 1, FIG.1 (b) is sectional drawing which shows the member for pipe manufacturing in the state by which the renovated pipe was piped. It is a figure which shows typically the lining method of the existing pipe. FIG. 3 is a view corresponding to FIG. 1B for explaining the function of the pipe-making member when an external force is applied. It is sectional drawing which shows the member for pipe manufacture which concerns on Embodiment 2. FIG. It is sectional drawing which shows the member for pipe manufacture which concerns on Embodiment 3. FIG. It is sectional drawing of the member for pipe manufacture which shows each modification at the time of making a cut-off part into a lock structure. It is sectional drawing of the member for pipe manufacture which shows each modification when a cut-off part is made into an undercut shape. It is sectional drawing of the member for pipe manufacture which shows each modification at the time of shape | molding a cutting part with an elastomer. FIG. 9A is a cross-sectional view showing a joined state of the pipe-making member, and FIG. 9B is a perspective view for explaining the joining work. It is sectional drawing which shows the conventional member for pipe making.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Embodiment 1]
FIG. 1A is a cross-sectional view (a cross-sectional view in a direction perpendicular to the longitudinal direction of the pipe-making member 1) showing the pipe-making member (profile) 1 according to the present embodiment. Moreover, FIG.1 (b) is sectional drawing which shows the member 1 for pipe making in the state by which the renovated pipe 9 was manufactured.

  The tube-making member 1 includes a long strip-shaped substrate 2 and a plurality of ribs 3, 3, 3 provided along the longitudinal direction of the surface 2 </ b> A of the substrate 2.

(substrate)
The substrate 2 of the tube-forming member 1 in the present embodiment is constituted by four substrate portions 21, 22, 23, and 24 extending in the width direction (the left-right direction in FIG. 1). That is, the substrate 2 has a configuration in which the first substrate portion 21, the second substrate portion 22, the third substrate portion 23, and the fourth substrate portion 24 are sequentially arranged on the same plane from the right side to the left side in FIG. It has become. Moreover, the board | substrate parts 21-24 which mutually adjoin each other have the edge | butt | butt | butts faced, and in the state (state in which the external force is not acting) shown in FIG. 1, the back surface 2B of the board | substrate 2 is a substantially smooth surface. It is supposed to be formed. In addition, the edges of the substrate parts 21 to 24 adjacent to each other (parts that are abutted with each other) may be connected to each other by a connection part that is relatively thin (thin enough to be broken by the action of an external force).

  A male fitting portion 25 is provided at one side edge (right side edge in the figure) of the first substrate part 21, and a female type is provided at one side edge (left side edge in the figure) of the fourth board part 24. A fitting portion 26 is provided. When the rehabilitated tube 9 is manufactured by the tube-forming member 1, the tube-forming member 1 is spirally wound so that the preceding tube-forming member 1 and the subsequent tube-making member 1 are adjacent to each other with a delay in the circulation. Then, the male fitting portion 25 is sequentially fitted into the female fitting portion 26 (see FIG. 1B).

  A seal member 4 made of a polyvinyl chloride elastomer is attached to the surface of the first substrate portion 21 in the vicinity of the male fitting portion 25, and the male fitting portion 26 is attached to the female fitting portion 26. In a state in which 25 is fitted, the seal member 4 is configured to ensure water tightness between the pipe making members 1 and 1.

(rib)
Next, the structure of the rib 3 which is the characteristic of this embodiment is demonstrated.

  A plurality of ribs 3 (three stripes in the present embodiment) are provided on the surface 2A of the substrate 2. The structures of the ribs 3, 3, and 3 are the same as each other. Here, the rib 3 provided between the first substrate portion 21 and the second substrate portion 22 will be described as an example.

  The rib 3 includes a rib main body 31 erected on the surface 2 </ b> A of the substrate 2, and an anchor portion 32 provided on the distal end side of the rib main body 31.

  The rib main body 31 is formed by integrally forming a first rib piece 33 and a second rib piece 34. The first rib piece 33 and the second rib piece 34 correspond to the “deformed portion” in the present invention.

  The first rib piece 33 has a base end (end on the substrate 2 side) continuous with an end edge of the first substrate portion 21 (an end facing the second substrate portion 22). The first rib piece 33 is inclined toward the arrangement position side (left side in the drawing) of the second rib piece 34 in the protruding direction (upward in FIG. 1). On the other hand, the base end portion of the second rib piece 34 is continuous with the edge of the second substrate portion 22 (the edge facing the first substrate portion 21). Further, the second rib piece 34 is inclined toward the arrangement position side (right side in the drawing) of the first rib piece 33 in the protruding direction (upward in FIG. 1). And the front-end | tip part of the 1st rib piece 33 and the front-end | tip part of the 2nd rib piece 34 are continuing. As described above, the space between the edge of the first substrate portion 21 and the edge of the second substrate portion 22 has a bellows shape (a mountain shape upward) composed of the first rib piece 33 and the second rib piece 34. The structure is connected by the rib main body 31.

  Further, as described above, the first substrate portion 21 and the second substrate portion 22 are abutted with each other at their edges. For this reason, a cavity S that is isolated from the internal space of the rehabilitation pipe 9 when the rehabilitation pipe 9 is manufactured is formed between the rib pieces 33 and 34. In other words, each of the rib pieces 33 and 34 is shaped to recede from the mating rib pieces 34 and 33 from the distal end portion toward the proximal end portion, and between the rib pieces 33 and 34. Is provided with a cavity S.

  Since the rib 3 is configured as described above, the external force in the tube axis direction (external force in the direction in which the regenerated tube 9 is extended; the arrow in FIG. 1B) is applied to the regenerated tube 9 manufactured by the tube-forming member 1. F (see F and F)), the first rib piece 33 and the second rib piece 34 each fall from the outside to the inside of the rehabilitation pipe 9 (fall in a direction parallel to the substrate 2), By deforming the rib main body 31 so that the dimension in the height direction is shortened, the length of the rehabilitated pipe 9 in the pipe axis direction is lengthened (see FIG. 3). That is, the length 1 in the width direction of the pipe-making member 1 can be extended by deformation of the first rib piece 33 and the second rib piece 34 (deformation that shortens the height direction dimension of the rib main body 31). Yes. Thereby, it becomes the structure which can avoid that the rehabilitation pipe | tube 9 is damaged by the said external force.

  A lock piece 35 that protrudes upward is provided at the tip of the rib main body 31 (the upper surface of the connection portion between the first rib piece 33 and the second rib piece 34). The lock piece 35 is provided along the entire length of the rib main body 31 (the direction perpendicular to the paper surface of FIG. 1A). The cross-sectional shape of the tip portion of the lock piece 35 is substantially circular.

  A similar locking piece 35 is provided on the upper surface of the female fitting portion 26.

  The anchor portion 32 is a flat plate-like member extending in a horizontal direction substantially orthogonal to the standing direction (vertical direction in the drawing) of the rib main body 31. A lock groove 36 that can be engaged with the lock piece 35 is formed at the center of the lower surface of the anchor portion 32. The cross-sectional shape of the lock groove 36 is a substantially circular shape that substantially matches the cross-sectional shape of the tip portion of the lock piece 35. The distal end portion of the lock piece 35 is inserted into the lock groove 36, and the anchor portion 32 is engaged with the distal end portion of the rib main body 31. The anchor portion 32 is also engaged with the lock piece 35 formed in the female fitting portion 26.

  The engaging force can be easily disengaged when an external force of a predetermined value or more (particularly, a downward external force (external force toward the inside of the rehabilitation pipe 9)) acts on the rib body 31 (anchor portion 32). Can be detached from the rib main body 31). The shapes of the lock piece 35 and the lock groove 36 are designed in advance so as to obtain this engagement force. As described above, a lock structure is provided between the rib main body 31 and the anchor portion 32 so that the rib main body 31 and the anchor portion 32 can be separated by the action of an external force. The detaching portion 8 is configured.

  The rib 3 provided between the first substrate portion 21 and the second substrate portion 22 has been described above as an example, but other ribs (between the second substrate portion 22 and the third substrate portion 23) are described. The rib 3 provided on the third substrate portion 23 and the rib 3 provided between the third substrate portion 23 and the fourth substrate portion 24 have the same configuration. 3, the same members as those described above are denoted by the same reference numerals.

  Moreover, the space | interval dimension (arrangement pitch of the rib 3) of the ribs 3 and 3 in the width direction of the member 1 for pipe making is set to 30 mm or less, for example. Further, it is preferably set to 20 mm or less. The number of ribs 3, 3, and 3 is set so that these arrangement pitches are obtained.

  In addition, each member mentioned above was formed in the elongate strip | belt shape by extrusion molding by using as a raw material the synthetic resin, such as polyvinyl chloride, polyethylene, polycarbonate, and polyester, alone or appropriately mixed. Moreover, the surface or the inside may be reinforced with glass fiber etc. as needed.

(Lining method for existing pipes)
Here, the lining method of the existing pipe | tube using the said member 1 for pipe making is demonstrated easily. FIG. 2 is an explanatory view schematically showing a lining method for existing pipes.

  As shown in FIG. 2, manholes 101 and 102 are provided in the existing pipe 10, and the pipe-making member 1 is introduced into the existing pipe 10 using the manholes 101 and 102 in the rehabilitation target area.

  In the vicinity of one manhole 101, a drum 103 around which the pipe-forming member 1 is wound is disposed, and in the vicinity of the other manhole 102, a power source (generator) 104 is disposed. Further, the pipe making machine 105 and the carriage 107 on which the hydraulic unit 106 is placed are carried into the existing pipe 10 from the manhole 101. Then, the pipe making member 1 is pulled out from the drum 103 and supplied into the manhole 101, and the pipe making member 1 is spirally wound using the pipe making machine 105. At this time, the adjacent female fitting part 26 and the male fitting part 25 of the pipe-forming members 1 and 1 are joined to form a pipe.

  When the pipe making member 1 is spirally wound in the existing pipe 10, the pipe making member 1 extends flexibly in the width direction even if there is a bent portion in the pipe line, so that the operation is not interrupted smoothly. It is possible to proceed with pipe making. Moreover, since the back surface (surface which comprises the inner peripheral surface of the renovated pipe 9) 2B is formed smoothly, and the member 1 for pipe making has no big unevenness | corrugation, the inner peripheral surface of the formed regenerated pipe 9 becomes smooth, Smooth water flow can be secured.

  After the rehabilitation pipe 9 is produced by the pipe making member 1 as described above, the backfilling material 5 (see FIG. 1B) such as mortar is filled between the rehabilitation pipe 9 and the existing pipe 10. The As a result, the rib 3 is embedded in the backfilling material 5 to exert an anchor effect. As a result, the rehabilitation pipe 9, the backfilling material 5 and the existing pipe 10 are integrated to form a composite pipe. Will be.

(When external force is applied)
Next, an operation when an external force caused by an earthquake, ground subsidence, or the like is applied in the pipe axis direction of the rehabilitated pipe 9 in a state where the existing pipe 10 is lined by the pipe making member 1 will be described.

  When an external force is applied in the direction indicated by arrows F and F in FIG. 3, the external force F falls on the first rib piece 33 and the second rib piece 34 from the outside to the inside of the rehabilitated tube 9. It acts as a force in the direction of turning. That is, it acts as a force in the direction of shortening the height dimension of the rib main body 31. Thereby, the upper end position of the rib main body 31 moves in the direction from the outer side of the rehabilitation pipe 9 toward the inner side. With this movement, the engagement between the anchor portion 32 and the rib main body 31 (engagement due to the lock piece 35 being fitted in the lock groove 36) is released, and the anchor portion 32 is detached from the rib main body 31. This is because the anchor portion 32 is embedded in the backfilling material 5 and exhibits an anchoring effect and is difficult to move inside the backfilling material 5, whereas the rib main body 31 is compared. This is because it is easy to move (especially due to the presence of the cavity S).

  As the anchor portion 32 is detached from the rib body 31 in this way, the rib body 31 is not subjected to the anchor effect by the anchor portion 32, and the deformation of the rib body 31 described above (the height of the rib body 31 is shortened). Deformation) is easily performed. That is, the anchor effect by the anchor portion 32 does not hinder the operation of extending the rehabilitation tube 9 in the tube axis direction. As a result, as described above, the first rib piece 33 and the second rib piece 34 are deformed so as to fall from the outer side to the inner side of the rehabilitation pipe 9 (to fall in a direction parallel to the substrate 2). The length of the rehabilitating tube 9 in the tube axis direction is increased, the breakage of the rehabilitating tube 9 is avoided, and a flow path can be secured.

  In addition, when the length of the rehabilitating pipe 9 in the tube axis direction becomes longer, the position of the female fitting portion 26 moves in the tube axis direction. Accordingly, the anchor portion 32 engaged with the lock piece 35 of the female fitting portion 26 is detached from the female fitting portion 26.

  As described above, in the present embodiment, when the external force is not applied, the rehabilitation pipe 9 is stably held in the existing pipe 10 by the anchor effect by the anchor portion 32 and the external force is applied. When the anchor portion 32 is detached from the rib main body 31, the length in the width direction of the tube-forming member 1 is extended and the rehabilitated tube 9 is extended, whereby the rehabilitated tube 9 can be prevented from being damaged.

[Embodiment 2]
Next, Embodiment 2 will be described. In the present embodiment, the configuration of the separating portion 8 and the configuration of the butted portion between the substrate portions 21 to 24 are different from those of the first embodiment. Here, only differences from the first embodiment will be described.

  FIG. 4 is a cross-sectional view showing the pipe-making member 1 according to this embodiment. As shown in FIG. 4, in the cut-off portion 8 of the pipe-making member 1 according to this embodiment, the rib main body 31 and the anchor portion 32 are integrally formed, and the thickness dimensions of these connecting portions are ribs. It is configured by being set smaller than the wall thickness of the main body 31 and the anchor portion 32. That is, the separating part 8 has an undercut shape. For example, the thickness dimension of the separation part 8 is set to about 1/5 of the thickness dimension of the rib main body 31. This thickness dimension is easily broken when an external force greater than a predetermined value (in particular, a downward external force (external force toward the inside of the rehabilitation pipe 9)) acts on the rib body 31 (anchor portion 32 is a rib). It is set to a value that can be detached from the main body 31.

  Moreover, as a structure of the butting | matching part of each board | substrate parts 21-24, it has the structure which piled up the inclined surfaces 27a and 27b inclined only by the predetermined angle with respect to the longitudinal direction of the board | substrate 2. As shown in FIG. According to this, even if the external force is applied and the rib main body 31 is deformed (deformation that shortens the height dimension), if the amount of deformation is small, the inner peripheral surface of the rehabilitation pipe 9 can be maintained smoothly, Smooth water flow can be secured. In addition, according to the configuration in which the inclined surfaces 27 a and 27 b are overlapped with each other in this way, when the bent portion exists in the pipe line, the substrate portions 21 to 24 are slightly relative to each other in the width direction of the substrate 2. Even if it moves, the inner peripheral surface of the rehabilitation pipe 9 can be kept smooth.

  The other configuration and the operation at the time of acting on the external force are the same as those in the first embodiment described above, and thus the description thereof is omitted here.

[Embodiment 3]
Next, Embodiment 3 will be described. In the present embodiment, the configuration of the separating portion 8 and the configuration of the rib main body 31 are different from those of the above-described embodiments. Here, only differences from the embodiments will be described.

  FIG. 5 is a cross-sectional view showing the pipe-making member 1 according to this embodiment. As shown in FIG. 5, the cut-off portion 8 of the pipe-making member 1 according to this embodiment is made of an elastomer that connects the rib main body 31 and the anchor portion 32. The strength of the elastomer (separation part 8) is easily broken when an external force of a predetermined value or more (in particular, a downward external force (external force toward the inside of the rehabilitated tube 9)) acts on the rib body 31. (The anchor part 32 can be detached from the rib main body 31). That is, the separation part 8 in the present embodiment has a configuration in which the rib main body 31 and the anchor part 32 are connected by a material having lower strength than these constituent materials.

  Specifically, as the elastomer, isoprene-based elastomers, olefin-based elastomers, ester-based elastomers, vinyl chloride-based elastomers, and the like are applicable.

  Further, the separating portion 8 may be made of rubber instead of the elastomer. As this rubber, butyl rubber, urethane rubber, acrylic rubber, silicone rubber, ethylene-propylene copolymer rubber, ethylene-propylene-diene terpolymer rubber and the like are applicable.

  Further, the first rib piece 33 and the second rib piece 34 constituting the rib main body 31 in the present embodiment are not inclined but extend in a direction substantially orthogonal to the substrate 2 and overlap each other. Yes.

  In addition, as the configuration of the abutting portion between the substrate portions 21 to 24, the inclined surfaces 27a and 27b inclined by a predetermined angle with respect to the longitudinal direction of the substrate 2 are overlapped as in the second embodiment. It has a configuration.

  Other configurations and operations at the time of acting on an external force are the same as those in the above-described embodiment, and thus description thereof is omitted here.

[Modification]
Next, a plurality of modifications will be described. The following modified examples 1 are modified examples in the case where the separating part 8 has a lock structure (configuration of the separating part 8 shown in the first embodiment). Moreover, the modification 2 is each modification when the separation part 8 is made into an undercut shape (configuration of the separation part 8 shown in Embodiment 2). Moreover, the modification 3 is each modification when the separation part 8 is shape | molded by the elastomer (structure of the separation part 8 shown in Embodiment 3). In the following modifications, the configurations of the substrate 2 and the rib 3 are the same as those in the first embodiment, but the modifications can be applied to the substrate 2 and the rib 3 in other embodiments. is there.

  FIG. 6 is a cross-sectional view of the tube-forming member 1 showing Modification 1 (each modification when the separating portion 8 has a lock structure). In FIG. 6A, a protrusion 32 a extending outward is provided at the center of the upper surface of the anchor portion 32, and the anchor portion 32 has a T shape. Further, FIG. 6B shows a cross-sectional shape of the anchor portion 32 that extends only in one direction (right direction in the drawing) from the engagement position with the rib main body 31. FIG. 6C shows a cross-sectional shape of the anchor portion 32 that is inclined upward (V-shaped) as the distance from the engagement position with the rib main body 31 increases. Further, FIG. 6D shows a cross-sectional shape of the anchor portion 32 that is inclined downward (inverted V shape) as the distance from the engagement position with the rib main body 31 increases.

  FIG. 7 is a cross-sectional view of the pipe-making member 1 showing Modification Example 2 (each modification example in the case where the separating portion 8 has an undercut shape). The shape of the anchor portion 32 shown in FIGS. 7A to 7D is the same as the shape of the anchor portion 32 shown in FIGS. 6A to 6D described above.

  FIG. 8 is a cross-sectional view of the pipe-making member 1 showing Modification 3 (each modification when the separating portion 8 is formed of an elastomer). The shape of the anchor portion 32 shown in FIGS. 8A to 8D is the same as the shape of the anchor portion 32 shown in FIGS. 6A to 6D described above.

[Modification of joint structure]
Next, a modification of the structure for joining the pipe-making members 1 and 1 will be described. FIG. 9A is a cross-sectional view of the pipe making members 1, 1 according to this modification, and FIG. 9B is a perspective view for explaining the joining operation of the pipe making members 1, 1.

  In the pipe manufacturing member 1 according to each of the embodiments and modifications described above, the female fitting part 26 and the male fitting part 25 formed on the side edge of the pipe manufacturing member 1 are fitted and joined to each other. The configuration was In this modified example, instead of this, as the joint portion of the pipe-making member 1, joint recesses 11 and 12 are formed at both side edges in the width direction, and these joint recesses 11 and 12 are joined using the connector 7. It is said that.

  Specifically, the pipe-making member 1 is provided with a joint recess 11 at one side edge, and a joint recess 12 having a symmetrical shape with the joint recess 11 at the other edge. Each of the joint recesses 11 and 12 includes a fitting portion.

  The connector 7 is formed in a long shape, and is disposed across the adjacent pipe-making members 1 and 1 by winding. As shown in the figure, the connector 7 is formed with two convex portions 71 and 71 corresponding to the concave shape formed by combining two adjacent joint concave portions 11 and 12.

  The pipe-forming member 1 is supplied to the pipe-making machine 105 in a state in which one of the convex portions 71 of the connector 7 is fitted into one of the joint concave portions 11 of the joint concave portions 11 and 12 at both side edges, for example. Wound around. In the winding process, the other convex portion 71 of the connector 7 is fitted into the other joint concave portion 12 of the pipe-producing members 1 and 1 adjacent to each other, and the pipe-making members 1 and 1 are joined to each other.

-Other embodiments-
The pipe-making member 1 according to the present invention can be implemented in various other forms besides the above-described embodiments and modifications.

  For example, the configurations of the male fitting portion 25 and the female fitting portion 26 of the pipe-forming member 1, the number of ribs 3 to be arranged, the arrangement interval, and the like may be any configuration. Therefore, the above-described embodiment is merely an example and is not limited.

  For example, in each of the above-described embodiments and modifications, the rib main body 31 is constituted by the two rib pieces 33 and 34, but may be constituted by three or more rib pieces.

  Further, in each of the above-described embodiments and modifications, the side edges of the pipe-making members 1 and 1 are joined to form a tubular shape. The present invention is not limited to this, and a band-shaped joint member is interposed between the side edges of the pipe-making members 1 and 1, and the side edges of the pipe-making members 1 and 1 are joined to each other via the joint member. The present invention can also be applied to those that are tubularly manufactured.

  The present invention can be applied to a pipe-making member for producing a rehabilitated pipe that lines an existing pipe.

DESCRIPTION OF SYMBOLS 1 Pipe manufacturing member 2 Substrate 21-24 Substrate part 27a, 27b Inclined surface 3 Rib 31 Rib main body 32 Anchor part 33 1st rib piece (deformation part)
34 Second rib piece (deformation part)
35 Lock piece 36 Lock groove 8 Detaching part 9 Rehabilitation pipe 10 Existing pipe S Cavity part

Claims (6)

A member for pipe making that is spirally wound and formed into a tubular shape, lining the inner surface of an existing pipe,
A long strip of substrate,
Ribs provided along the longitudinal direction of the surface of the substrate,
The rib includes a rib main body erected on the surface of the substrate, and an anchor portion provided on the tip side in the erected direction of the rib main body,
The rib body is adapted to extend the width direction of the length of the pipe producing member by deforming so as to shorten the dimension in the height direction which is the standing direction,
Between the rib main body and the anchor portion, when the rib main body is deformed by the action of an external force in a direction that extends the length in the width direction of the pipe-forming member, the rib main body and the anchor portion the cut-off portion is provided to disconnect,
The separation part is configured by engaging the rib body and the anchor part, and the engagement between the rib body and the anchor part is released when the rib body is deformed by the action of the external force. A member for pipe making, characterized in that A member for pipe making that is spirally wound and formed into a tubular shape, lining the inner surface of an existing pipe,
A long strip of substrate,
Ribs provided along the longitudinal direction of the surface of the substrate,
The rib includes a rib main body erected on the surface of the substrate, and an anchor portion provided on the tip side in the erected direction of the rib main body,
The rib body is adapted to extend the length in the width direction of the pipe-making member by deforming to shorten the dimension in the height direction which is the standing direction,
Between the rib main body and the anchor portion, when the rib main body is deformed by the action of an external force in a direction that extends the length in the width direction of the pipe-forming member, the rib main body and the anchor portion The separation part which separates is provided,
The separation portion is configured by a thick portion smaller than the thickness of the rib main body and the anchor portion, and breaks when the rib main body is deformed by the action of the external force, and the rib main body and the anchor portion A member for pipe making, which is configured to separate A member for pipe making that is spirally wound and formed into a tubular shape, lining the inner surface of an existing pipe,
A long strip of substrate,
Ribs provided along the longitudinal direction of the surface of the substrate,
The rib includes a rib main body erected on the surface of the substrate, and an anchor portion provided on the tip side in the erected direction of the rib main body,
The rib body is adapted to extend the length in the width direction of the pipe-making member by deforming to shorten the dimension in the height direction which is the standing direction,
Between the rib main body and the anchor portion, when the rib main body is deformed by the action of an external force in a direction that extends the length in the width direction of the pipe-forming member, the rib main body and the anchor portion The separation part which separates is provided,
The separating portion is configured such that the rib main body and the anchor portion are connected by a material having lower strength than these constituent materials, and breaks when the rib main body is deformed by the action of the external force. And the rib main body and the anchor portion are separated from each other. In the member for pipe making according to claim 1, 2, or 3,
The substrate is composed of a plurality of substrate portions divided in the width direction,
The rib main body includes a pair of deformable portions, and the base end portions of the deformable portions are continuous with the edge of the substrate portion adjacent to each other, and the distal ends of the deformable portions are continuous with each other,
A pipe-forming member, wherein the deformed portion is deformed so as to fall down due to the action of the external force and the height of the rib body is shortened. In the member for pipe making according to claim 4,
Each of the deforming portions has a shape retreating from the deforming portion on the other side from the distal end portion toward the base end portion, and a hollow portion is provided between the deforming portions. A member for pipe making. In the member for pipe making according to claim 4 or 5,
Edges of the substrate portions adjacent to each other are abutted against each other, and the abutting portion has a configuration in which inclined surfaces inclined by a predetermined angle with respect to the width direction of the substrate are overlapped. A pipe-making member.

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