JP2018052009A - Pipe-making method and apparatus for spiral pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe-making method in which the inner circumferential restriction body can be omitted to mitigate the water-flow inhibition as well as the inner circumferential surface of the renovated pipe can be made smooth to make the cross section uniform.SOLUTION: While winding a belt-shaped member 90 in helix shape, the edges adjacent to one another in a circumferential direction of the belt-shaped member 90 are joined to form a helix pipe 9; an outer circumference regulator 50 ring-shaped along the inner circumference surface of an existing pipe 1 is slidably set along the drawing direction of the helix pipe 9; a tip part 91e in the drawing direction of the preceding helix pipe part 91 pipe-made previously in the belt-shaped member 90 and a pipe-making machine 3 are disposed inside the outer circumference regulator 50; the adjacent edges of a trailing belt part 92 trailing the preceding helix pipe part 91 of the belt-shaped member 90 and the preceding helix pipe part 91 are joined together by the pipe-making machine 3 to draw the preceding helix pipe part 91; corresponding to the drawing, the outer circumference regulator 50 is advanced in the drawing direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a method and an apparatus for manufacturing a spiral pipe by winding a belt-like member in a spiral shape, for example, an existing pipe that is rehabilitated by lining an existing pipe such as an aged sewer pipe by a spiral pipe (rehabilitation pipe). The present invention relates to a pipe making method and a pipe making apparatus suitable for a rehabilitation method and the like.

  It is known to rehabilitate existing pipes such as sewage pipes by lining them with rehabilitation pipes. For example, Patent Document 1 discloses an SPR (Spiral Pipe Renewal) method as an example of an existing pipe rehabilitation method. According to this construction method, a strip-shaped member made of a synthetic resin was spirally wound along the inner peripheral surface of an existing tube by using a pipe making machine, and was previously formed into a spiral tubular shape in the band-shaped member. The fitting portions at the edges adjacent to each other of the leading spiral tube portion and the trailing band portion are fitted to each other. The pipe making machine is propelled (self-propelled) as the leading spiral pipe part is produced.

  In this type of pipe making machine, an inner circumference restricting body is provided inside the preceding spiral pipe portion. For example, the pipe making machine disclosed in Patent Document 1 has a plurality of guide rollers and an annular frame as an inner periphery regulating body (link roller). A plurality of guide rollers are arranged at intervals in the circumferential direction of the annular frame. The shape of the preceding spiral tube portion is regulated by pressing the preceding spiral tube portion against each guide roller.

  The pipe making machine of Patent Literature 2 includes a plurality of radially extending frames as an inner periphery regulating body. A guide roller is provided at the tip of each frame. Tension is applied to the preceding spiral tube portion by pressing the inner peripheral surface of the preceding spiral tube portion against these guide rollers. When the succeeding band part is pushed toward the fitting position with the preceding spiral tube part, the preceding spiral tube part is opposed only by the reaction force due to the tension, so that the fitting part of the succeeding band part is fitted to the preceding spiral tube part. Mated with joint.

Japanese Patent No. 4866428 Japanese Patent No. 4505142

In the conventional pipe making method, since the inner periphery regulating body is arranged inside the rehabilitated pipe, there is a possibility that the flowing water is inhibited. Therefore, the inventors have conceived that the existing pipe is used as a shape regulating body of the preceding spiral pipe portion by pressing the belt-like member against the inner peripheral surface of the existing pipe to produce the pipe. On the other hand, the inner peripheral surface of the existing pipe is not necessarily smooth and may be uneven due to aging or the like. If the pipe is manufactured in accordance with this, irregularities are also formed on the inner peripheral surface of the rehabilitation pipe, and the cross-sectional shape is not uniform.
In view of such circumstances, the present invention allows a spiral tube to have a uniform cross-sectional shape when a spiral tube such as a helical rehabilitation tube is manufactured, and can be manufactured even if the inner periphery regulating body is omitted. An object of the present invention is to provide a pipe making apparatus and a pipe making method capable of suppressing or alleviating running water inhibition when applied to the pipe rehabilitation method.

In order to solve the above-mentioned problem, the method of the present invention is a pipe-making method for forming a helical spiral tube by joining edges adjacent to each other around the belt-like member while spirally winding the belt-like member. There,
An annular outer periphery regulating body is installed so as to be slidable along the extending direction of the spiral tube,
In the inside of the outer periphery regulating body, a leading end portion in the extending direction of the preceding spiral pipe portion that has been piped in advance in the band-shaped member and a pipe making machine are disposed, and the leading edge in the band-shaped member is formed by the pipe making machine. Extending the preceding spiral tube portion by joining the adjacent edges of the subsequent band portion following the spiral tube portion and the preceding spiral tube portion on the inner peripheral surface of the outer periphery regulating body,
In accordance with the stretching, the outer periphery regulating body is advanced in the stretching direction.

  According to the pipe manufacturing method, the shape of the preceding spiral pipe portion can be regulated from the outer circumference side by performing pipe production along the inner circumferential surface of the outer circumference regulating body. As a result, a spiral tube having a uniform cross section matched to the outer periphery regulating body can be formed. In addition, the inner periphery regulating body can be omitted. When applied to an existing pipe rehabilitation method in which an existing pipe such as an old sewer pipe is lined with a spiral pipe and then rehabilitated, obstruction of running water in the existing pipe can be mitigated by eliminating the inner periphery regulating body. Even if the existing pipe has a non-circular cross section, a non-circular and uniform cross-sectional spiral pipe similar to the existing pipe can be formed by manufacturing the outer periphery regulating body in accordance with this. Even if the inner peripheral surface of the existing pipe is uneven, it is possible to prevent the spiral pipe from appearing uneven.

The device of the present invention is a pipe making device that forms a helical spiral tube by joining edges adjacent to each other around the belt-like member while winding the belt-like member in a spiral shape,
The outer circumference regulating means and the pipe making machine are provided.
The outer periphery restricting means includes an annular outer periphery restricting body and a slide mechanism that allows the outer periphery restricting body to slide along the extending direction of the spiral tube. The leading end of the leading spiral pipe part that has been piped and the pipe making machine are arranged,
The pipe making machine joins adjacent edges of a succeeding band and the preceding spiral pipe part following the preceding spiral pipe part in the band-shaped member on an inner peripheral surface of the outer periphery regulating body. And

  According to the pipe manufacturing apparatus, a spiral tube can be manufactured along the inner peripheral surface of the outer periphery restricting body, and a spiral tube having a uniform cross section matched to the outer periphery restricting body can be formed. Even if the spiral tube shape to be formed is a non-circular cross section, it can be handled. And an inner periphery control body can be abbreviate | omitted and when applying to the said existing pipe renovation construction method, flowing water inhibition can be eased. As the extension of the preceding spiral tube proceeds, the outer periphery regulating body is advanced by the slide mechanism. As a result, pipe production can always be performed in the outer periphery regulating body. The pipe-making machine can always be driven in the outer periphery regulation body.

The pipe making machine pushes the trailing band portion from the inside of the outer periphery restricting body toward the outer periphery restricting body to be fitted with the preceding spiral tube portion on the inner peripheral surface of the outer periphery restricting body and obtains a propulsive force. It is preferable to include a pipe making drive unit.
Thereby, it can be made to fit with a preceding spiral pipe part, pressing a succeeding belt | band | zone part on the internal peripheral surface of an outer periphery control body. Furthermore, the shape of the preceding spiral tube portion can be surely restricted by the outer periphery restricting body, and the spiral tube can have a uniform cross section following the outer periphery restricting body. Furthermore, the leading spiral pipe portion can be extended by propelling the pipe making machine in the circumferential direction of the outer periphery regulating body using the circumferential force component of the pushing force as the driving reaction force.

It is preferable that the pipe making machine includes an engaging portion that is slidably engaged with the preceding spiral tube portion so as to be slidable in an extending direction of a band-shaped member constituting the preceding spiral tube portion.
As a result, the pipe making machine can be prevented from rotating or dropping off from the belt-like member due to the moment from the succeeding band portion or the like, and the pipe can be stably produced.

It is preferable that the outer periphery restricting body includes a plurality of restricting members arranged in the circumferential direction and a connecting member that detachably connects the restricting members.
Thereby, the installation work of an outer periphery control body and the removal work after construction can be facilitated. Further, by adjusting the number of regulating members, the angle between adjacent regulating members, etc., it is possible to easily cope with the size and cross-sectional shape of the spiral tube to be formed.

It is preferable that the slide mechanism includes a rail that guides the outer periphery regulating body in the extending direction.
Thereby, the outer periphery regulating body can be reliably slid in the extending direction. When applied to the existing pipe rehabilitation method, the rail is preferably laid on the inner wall of the existing pipe.

It is preferable that the slide mechanism includes a wheel provided on an outer peripheral surface of a bottom portion of the outer periphery regulating body.
Thereby, the slide operation of the outer periphery regulating body can be facilitated. Even if the outer periphery regulating body is heavy, it can be slid by human power.

It is preferable that the slide mechanism includes a slide drive unit that applies a forward force along the extending direction to the outer periphery regulating body.
As a result, the burden on the operator can be reduced. The slide drive unit may be a winch (traction machine) that pulls the outer periphery restricting body, or may be a motor that rotationally drives wheels provided on the outer periphery restricting body.

  According to the pipe making method and the pipe making apparatus according to the present invention, a spiral pipe can be made into a uniform cross-sectional shape. And even if an inner periphery control body is abbreviate | omitted, pipe manufacture is possible, and when applying to the existing pipe rehabilitation method, flowing water inhibition can be suppressed or eased.

FIG. 1 is a side cross-sectional view showing a first embodiment of the present invention and showing how aged existing pipe is rehabilitated by a pipe making apparatus. 2 is a front sectional view taken along line II-II in FIG. FIG. 3 is a perspective view of the outer periphery regulating means of the pipe making apparatus. Fig.4 (a) is front sectional drawing of the control unit of the bottom part of the said outer periphery control means along the IVa-IVa line | wire of the same figure (b). FIG.4 (b) is side surface sectional drawing of the said control unit in alignment with the IVb-IVb line | wire of the same figure (a). FIG. 5 is a front view schematically showing a pipe making machine of the pipe making apparatus. FIG. 6A is a cross-sectional view taken along the line VIa-VIa in FIG. FIG. 6B is a cross-sectional view taken along the line VIb-VIb in FIG. FIG. 7 is a side cross-sectional view showing an existing pipe that has been rehabilitated. FIG. 8 shows a second embodiment of the present invention, and is a front cross-sectional view of an existing pipe being rehabilitated by a pipe making apparatus. Fig.9 (a) is front sectional drawing of the control unit of the bottom part of the outer periphery control means based on the said 2nd Embodiment which follows the IXa-IXa line | wire of the same figure (b). FIG. 9B is a side cross-sectional view of the restriction unit taken along line IXb-IXb in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 7, the present invention is for rehabilitating an aged existing pipe 1. Examples of the existing pipe 1 include a sewer pipe, a water pipe, an agricultural water pipe, and a gas pipe. As shown in FIG. 2, the existing pipe 1 has a non-circular cross section (a cross section that is not a perfect circle). A rehabilitation pipe 9 (spiral pipe) is lined on the inner wall of the existing pipe 1. As shown in FIG. 7, the rehabilitation pipe 9 is provided over the entire length of the existing pipe 1 between the start person hole 4 and the arrival person hole 4B. The rehabilitation tube 9 is constituted by a single long strip member 90 and has a spiral tubular shape. An annular gap 1e between the inner circumference of the existing pipe 1 and the outer circumference of the rehabilitation pipe 9 is filled with a backfilling material 6 such as mortar.

As shown in FIG. 1, the band-shaped member 90 in the course of pipe production includes a leading spiral tube portion 91 and a trailing band portion 92. As shown in FIG. 2, the band-shaped member 90 is wound in, for example, a clockwise winding direction in FIG. 2, so that a spiral tubular leading spiral tube portion 91 is formed. As shown in FIG. 1, the preceding spiral pipe portion 91 is formed from the end of the existing pipe 1 on the start person hole 4 side (right side in FIG. 1) toward the reaching person hole 4 </ b> B side (left side in FIG. 1). It is stretched to the stretching direction along the first tube axis L _1.

  An unmade tube succeeding band portion 92 continues from the leading end portion in the winding direction of the preceding spiral tube portion 91. The trailing band portion 92 is passed through the inside of the leading spiral tube portion 91 and the inside of the starter hole 4.

As shown in FIG. 6A, the belt-like member 90 has a constant cross section and extends in the direction perpendicular to the paper surface of FIG. The material of the band main body 90a of the band-shaped member 90 is, for example, a synthetic resin such as polyvinyl chloride. A reinforcing band member 96 is provided on the back side of the band-shaped member 90 (the outer peripheral side, the lower side in FIG. 6A). The reinforcing strip 96 is made of a metal plate such as a steel plate. The reinforcing band member 96 protrudes to the outer peripheral side (lower side in FIG. 6A) than the band main body 90a, but the outer peripheral side surface of the band main body 90a and the reinforcing band member 96 (in FIG. 6A). Bottom surface) may be flush with each other.
The reinforcing strip 96 may be omitted. A flat reinforcing band member may be embedded in the resin band main body 90a.
A groove 95b is formed on the back side of the belt-like member 90 (outer peripheral side, lower side in FIG. 6A). The groove 95b extends in the same direction as the belt-shaped member 90 (the direction orthogonal to the paper surface of FIG. 6A).

  A first fitting portion 93 is formed at the edge of one side (the left side in FIG. 6A) in the width direction of the band-shaped member 90. A second fitting portion 94 having a shape obtained by inverting the first fitting portion 93 is formed at the edge portion on the other side (the right side in FIG. 6A) in the width direction of the band-shaped member 90. As shown in FIG.6 (b), the fitting part 93,94 of the edge which adjoins the preceding spiral pipe part 91 and the rehabilitation pipe | tube 9, and adjoins by one round difference is mutually joined by uneven | corrugated fitting.

  As shown in FIG. 1, the pipe making apparatus 2 is arranged at the leading end portion 91 e (left end portion in FIG. 1) in the extending direction of the preceding spiral tube portion 91. The pipe making apparatus 2 includes a pipe making machine 3 and an outer periphery regulating means 5.

As shown in FIGS. 2 and 3, the outer periphery restricting means 5 includes an outer periphery restricting body 50 and a slide mechanism 60. The outer periphery regulating body 50 has an annular shape along the inner peripheral surface of the existing pipe 1. The axial direction of the outer periphery regulating body 50 is along the tube axis L ₁ (FIG. 1) of the existing tube 1. The outer periphery restriction body 50 is divided into a plurality of restriction units 50x in the circumferential direction, and can be disassembled and assembled.

As shown in FIG. 4, each regulation unit 50 x includes a plurality of regulation members 51 and an in-unit coupling material 53 (coupling material). Each restricting member 51 has a long plate shape extending in the axial direction of the outer periphery restricting body 50 (in the direction orthogonal to the plane of FIG. 4A). A rib 51b is formed on the outer peripheral surface (lower side in FIG. 4A) of the restricting member 51 so as to extend in the longitudinal direction of the restricting member 51 (the direction perpendicular to the plane of FIG. 4A).
The restricting member 51 may be made of a punching metal, a lattice plate, or the like.

  The plurality of regulating members 51 in the regulating unit 50x are arranged in the width direction (left and right direction in FIG. 4A). The width direction of the restriction member 51, and hence the arrangement direction of the plurality of restriction members 51, are along the circumferential direction of the outer periphery restriction body 50. The restricting members 51 in each restricting unit 50 x are connected to each other via an in-unit connecting member 53. Although detailed illustration is omitted, the in-unit connecting member 53 and each regulating member 51 are detachably connected by connecting means such as bolts.

The in-unit connecting member 53 is disposed on the outer peripheral side (lower side in FIG. 4A) of the regulating member 51 and extends in the direction in which the regulating members 51 are arranged (the circumferential direction of the outer circumferential regulating body 50). Further, the in-unit connecting member 53 is given a curvature that matches the inner peripheral surface of the existing pipe 1 at the arrangement location. As a result, the angle between the adjacent regulating members 51 is matched to the curvature of the existing pipe 1 at the arrangement location.
The in-unit connecting member 53 may be disposed on the inner peripheral side (the upper side in FIG. 4A) of the restriction unit 50x.

As shown in FIGS. 2 and 3, a plurality of restriction units 50x are arranged in a ring shape. These restriction units 50x are connected via inter-unit connecting material 52 (connecting material). The inter-unit connecting member 52 has an annular shape along the inner peripheral surface of the outer periphery regulating body 50. Although detailed illustration is omitted, the inter-unit connecting member 52 and each regulating unit 50x are detachably connected by connecting means such as bolts. As a result, the regulating members 51 in the outer circumference regulating body 50 are connected to each other via the inter-unit connecting material 52 so as to be separable.
The inter-unit connecting member 52 may be provided along the outer peripheral surface of the outer periphery regulating body 50.

The outer periphery regulating body 50 can be slid along the extending direction of the tube axis L ₁ of the existing tube 1 and the rehabilitated tube 9 by the slide mechanism 60.
As shown in FIGS. 1 and 2, the slide mechanism 60 includes a plurality of rails 61 and a winch 64. The rail 61 is fixed to the inner peripheral surface of the existing pipe 1 by, for example, anchor bolts. The extending direction of the rail 61 is along the tube axis L ₁ of the existing tube 1. As shown in FIG. 3, the rail 61 is engaged with the outer periphery restricting body 50 by being interposed between adjacent restricting units 50 x. The outer periphery regulation body 50 is slidable with respect to the rail 61.

  As shown in FIG. 1, a winch 64 (slide drive unit) is disposed in front of the outer periphery regulating body 50 in the existing pipe 1 (left side in FIG. 1). A wire 65 (connected cable body) from the winch 64 is engaged with the outer periphery regulating body 50.

As shown in FIGS. 1 and 2, a distal end portion 91 e in the extending direction of the preceding spiral tube portion 91 and the pipe making machine 3 are arranged inside the outer periphery regulating body 50.
The pipe making machine 3 is propelled (self-propelled) along the winding direction (clockwise in FIG. 2) of the preceding spiral pipe portion 91. A fitting position 9p is set in the pipe making machine 3. At the fitting position 9p, concave and convex fitting (joining) between the first fitting portion 93 of the preceding spiral tube portion 91 and the second fitting portion 94 of the trailing band portion 92 is performed.

  As shown in FIG. 5, the pipe making machine 3 includes a device frame 3 a indicated by a two-dot chain line, a pipe making drive unit 10, and guide means 20. The relative position of the pipe making drive unit 10 and the guide means 20 is fixed by the device frame 3a.

  The pipe making drive unit 10 is separated from the fitting position 9p in the forward direction (left side in FIG. 5) of the pipe making machine 3 and to the inner peripheral side (upper side in FIG. 5) of the preceding spiral pipe unit 91. Has been placed. The tube-making drive unit 10 includes a pair of drive rollers 13 and 13. The axis of the drive roller 13 is directed in the width direction orthogonal to the propulsion direction of the pipe making machine 3 (direction orthogonal to the paper surface in FIG. 5). The trailing belt portion 92 is sandwiched from both sides by the pair of drive rollers 13 and 13. A rotation drive mechanism (not shown) such as a motor is connected to at least one drive roller 13. The drive roller 13 is driven to rotate about its own axis by the rotation drive mechanism. The rotation direction of the driving roller 13 is set so that the trailing band 92 is pushed obliquely with respect to the radial direction of the preceding spiral tube portion 91 from the inner peripheral side of the preceding spiral tube portion 91 toward the fitting position 9p. Yes.

  As shown in FIG. 5, a pair of front and rear guide means 20 is provided on the outer peripheral side (lower side in FIG. 5) with respect to the pipe making drive unit 10. Each guide means 20 has an outer peripheral guide plate 21 and an inner peripheral roller 22. The outer peripheral guide plate 21 has a flat plate shape and is addressed to the preceding spiral tube portion 91 from the outer peripheral side (lower side in FIG. 5). As shown in FIG. 6, the thickness of the plate body excluding the later-described locking portions 21 f and 21 g in the outer peripheral guide plate 21 is equal to or less than the protruding amount of the reinforcing band member 96 from the band body 90 a.

  As shown in FIG. 5, the inner peripheral roller 22 is in contact with the inner peripheral surface of the preceding spiral pipe portion 91 with its axis line oriented in the width direction of the pipe making machine 3 and can be driven to rotate around its own axis line. Yes. The inner circumferential roller 22 is arranged slightly deviated in the forward and backward directions with respect to the outer circumferential guide plate 21, but may be arranged at a position just opposite to the outer circumferential guide plate 21. A leading spiral tube portion 91 is sandwiched between the outer peripheral guide plate 21 and the inner peripheral roller 22. A fitting position 9p is set between the front and rear guide means 20.

Hereinafter, when the front and rear guide means 20 are distinguished from each other, the guide means 20 on the front side in the propulsion direction (left side in FIG. 5) is referred to as “front side guide means 20F”, and the guide on the rear side in the propulsion direction (right side in FIG. 5). The means 20 is referred to as “rear guide means 20R”.
As shown to Fig.6 (a), the latching | locking part 21f is formed in the one side part of the outer periphery guide plate 21 of the front side guide means 20F. The locking portion 21f is slidably locked in the groove 95b of the extended end portion 91e of the preceding spiral tube portion 91. As a result, the outer peripheral guide plate 21 of the front guide means 20F is restricted in movement in the width direction of the groove 95b (the left-right direction in FIG. 6A), and the extending direction of the groove 95b (the paper surface in FIG. 6A). It is slidable in the orthogonal direction.

  As shown in FIG. 6B, a pair of locking portions 21g are formed on both sides of the outer peripheral guide plate 21 of the rear guide means 20R. These locking portions 21g are slidably locked in the grooves 95b on both sides with the fitting portions 93 and 94 interposed therebetween. As a result, the outer peripheral guide plate 21 of the rear guide means 20R is restricted in movement in the width direction of the groove 95b (left and right direction in FIG. 6B), and the extending direction of the groove 95b (FIG. BA). It is slidable in the direction orthogonal to the paper surface.

5, the apparatus frame 3a of the pipe making machine 3 includes a support arm 3b for the outer peripheral guide plate 21 of the rear guide means 20R. The support arm 3 b is inserted between the fitting portions 93 and 94 and the outer periphery regulating body 50 along the outer peripheral side (lower side in FIG. 5) of the trailing band portion 92. The outer peripheral guide plate 21 of the rear guide means 20R is connected to and supported by the tip of the support arm 3b.
The outer peripheral guide plate 21 of the rear guide means 20R is arranged slightly shifted to the rear side (right side in FIG. 5) of the pipe making machine 3 from the fitting position 9p, but is arranged just at the fitting position 9p. May be.

The existing pipe 1 is renovated by the pipe making apparatus 2 as follows.
As shown in FIG. 1, it is assumed that a leading spiral pipe portion 91 is formed to some extent along the inner wall (inner peripheral surface) of the existing pipe 1.
The succeeding belt portion 92 of the belt-like member 90 is introduced from the starter hole 4 into the pipe making machine 3 inside the outer periphery regulating body 50 through the inside of the preceding spiral tube portion 91.
As shown in FIG. 5, the driving belt 13 of the pipe making drive unit 10 is driven to rotate, thereby pushing the trailing band portion 92 toward the fitting position 9p. The pushing direction is directed obliquely with respect to the radial direction of the preceding spiral tube portion 91. Due to this radial force component of the pushing force, the belt-like member 90 at the fitting position 9p is pressed against the inner peripheral surface of the outer periphery regulating body 50, while the second fitting portion 94 of the subsequent belt portion 92 and the preceding spiral tube portion 91 are pressed. The first fitting portions 93 are fitted on the inner peripheral surface of the outer periphery regulating body 50. The fitting portions 93 and 94 can also be fitted to each other when the preceding spiral tube portion 91 is pressed against the outer peripheral guide plate 21 by the radial component of the pushing force. Moreover, the fitting parts 93 and 94 can be stably fitted by pressing the leading spiral pipe part 91 from the inner circumference side (upper side in FIG. 5) by the inner circumference roller 22.

Furthermore, the pipe-making machine 3 can be propelled in the circumferential direction of the outer periphery restricting body 50 and thus in the circumferential direction of the existing pipe 1 by using the circumferential component of the pushing force as a propulsion reaction force. As a result, the regenerative tube 9 can be manufactured by extending the leading spiral tube portion 91 while circulating the pipe making machine 3 inside the outer periphery regulating body 50.
By locking the front and rear locking portions 21f and 21g in the groove 95b, it is possible to prevent the pipe making machine 3 from rotating due to a moment from the trailing band portion 92 or the like or dropping off from the band-shaped member 90. The posture of the pipe machine 3 can be stabilized.

According to the pipe manufacturing method, by performing pipe manufacturing along the inner peripheral surface of the outer periphery restricting body 50, the shape of the preceding spiral tube portion 91 can be restricted from the outer peripheral side. As a result, the rehabilitation pipe 9 can have a uniform cross-section following the outer periphery regulating body 50.
As shown by the two-dot chain line in FIG. 2, even if there are some uneven portions 1 d on the inner peripheral surface of the existing pipe 1, the inner peripheral surface of the rehabilitated tube 9 can be a smooth surface without unevenness.
Further, by adjusting the number of regulating members 51 or regulating units 50x in the outer circumference regulating body 50, the curvature of the connecting members 52, 53 or the angle between the neighboring regulating members 51, the outer circumference regulating body 50 is installed in the existing pipe 1. It can be adapted to the size and shape of the cross section. That is, the outer periphery regulating body 50 can be easily manufactured according to the non-circular cross-sectional shape of the existing pipe 1. Thereby, the rehabilitation pipe | tube 9 can be formed in the non-circular cross section similar to the existing pipe | tube 1. FIG. In other words, even if the existing pipe 1 has a non-circular cross section, the rehabilitation pipe 9 matched to the cross-sectional shape can be reliably produced.
Since the shape of the rehabilitation pipe 9 can be regulated from the outer circumference side by the outer circumference regulation body 50, the inner circumference regulation body is unnecessary. For this reason, even if a pipe making operation is performed while flowing water into the existing pipe 1, the obstruction of the flowing water can be alleviated by omitting the inner periphery regulating body.

The outer periphery restricting body 50 is appropriately advanced in accordance with the progress of the extension of the preceding spiral tube portion 91. For example, as shown by a two-dot chain line in FIG. 4B, when the leading spiral pipe portion 91 is extended to a position where the pipe making machine 3 is likely to interfere with the inter-unit connecting member 52 of the outer periphery regulating body 50. The pipe making machine 3 is stopped, and then the outer periphery regulating body 50 is slid along the rail 61. Specifically, as shown in FIG. 1, the outer periphery regulating body 50 is pulled forward in the extending direction (leftward in FIG. 1) by connecting the wire 65 to the outer circumference regulating body 50 and operating the winch 64. Note that the outer periphery regulating body 50 may be moved manually. At this time, the pipe making machine 3 is fixed in position with respect to the preceding spiral pipe portion 91 and the existing pipe 1. Thereby, the pipe making machine 3 can be relatively shifted to the rear end portion (the right end portion in FIG. 4B) in the outer periphery regulating body 50. Thereafter, the pipe making is advanced by restarting the operation of the pipe making machine 3.
In this way, the pipe making operation can always be performed within the outer periphery regulating body 50. The pipe making machine 3 can always be driven in the outer periphery regulating body 50.
In addition, by driving the winch 64 in parallel with the driving of the pipe making machine 3, the outer periphery regulating body 50 may be moved in parallel with the extension of the preceding spiral pipe portion 91.

  The outer periphery restricting body 50 can be disassembled and assembled for each restricting unit 50x. Furthermore, each regulating unit 50x can be disassembled into a plurality of regulating members 51 and connecting members 53, and can be assembled. Therefore, the carrying-in, installation, and removal work after construction of the outer periphery regulating body 50 into the existing pipe 1 can be simplified.

Next, another embodiment of the present invention will be described. In the following embodiments, the same reference numerals are given to the drawings for the same configurations as those already described, and the description thereof is omitted.
8 and 9 show a second embodiment of the present invention. In the second embodiment, the slide mechanism 60 includes wheels 63 instead of the rails 61. The wheel 63 is provided on the outer peripheral surface (the lower side surface in FIG. 8) of the bottom of the outer periphery regulating body 50, and can roll on the inner peripheral surface of the bottom of the existing pipe 1 in the extending direction (the direction perpendicular to the paper surface in FIG. 8). It has become. Thereby, the outer periphery regulating body 50 can be easily slid forward. Even if the outer periphery regulating body 50 is heavy, it can be slid by human power.
In the second embodiment, the rail 61 is unnecessary and the laying operation of the rail 61 can be omitted.
The wheel 63 may be provided not only at the bottom of the outer periphery restricting body 50 but also at the side of the outer periphery restricting body 50 or at the top of the outer periphery restricting body 50.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
For example, the pipe making machine 3 may be configured to push and move the outer periphery regulating body 50 forward in the extending direction by using a reaction force against the leading spiral pipe portion 91 and the like.
Braces (bars) may be provided inside the outer periphery regulating body 50. In this case, it is preferable to remove the braces (struts) in order to prevent running water from being interrupted.
The outer periphery restricting body 50 is not only divided into a plurality of restricting units 50x and thus a plurality of restricting members 51 in the circumferential direction, but is also plural in the axial direction of the outer periphery restricting body 50 (the direction orthogonal to the plane of FIG. 2 and FIG. 8). It may be divided into members.
The pipe making machine 3 may have a pair of fitting rollers. Between the fitting rollers, the trailing band portion 92 and the leading spiral tube portion 91 may be directly fitted, and a propulsive force may be obtained by rotation of the fitting roller. In this case, the driving roller 13 may be omitted or changed to a driven roller.
The inner peripheral roller 22 may be omitted.
As the slide mechanism 60, rails 61 may be laid on the inner wall of the existing pipe 1, and wheels 63 may be provided on the outer periphery regulating body 50. The wheel 63 may be made to travel on the rail 61.
In the second embodiment (FIGS. 8 and 9), the outer periphery regulating body 50 may be slid by rotating the wheels 63 by a motor (slide drive unit).
The present invention can also be applied to methods other than the rehabilitation method for existing pipes, as long as the spiral pipe is manufactured.

  The present invention can be applied to a rehabilitation method for existing pipes such as aging sewer pipes and agricultural water pipes.

1 Existing pipe 9 Rehabilitation pipe (spiral pipe)
90 Band-shaped member 91 Leading spiral tube portion 91e Stretched end portion (tip portion in the stretching direction)
92 Subsequent band part 95b Groove 9p Fitting position 2 Pipe making device 3 Pipe making machine 10 Pipe making drive part 13 Drive roller 20 Guide means 21 Outer guide plate 21f Locking part 21g Locking part 5 Outer circumference regulating means 50 Outer circumference regulating body 50x Control unit 51 Control member 52 Inter-unit connecting material (connecting material)
53 In-unit connection material (connection material)
60 Slide Mechanism 61 Rail 63 Wheel 64 Winch (Slide Drive Unit)

Claims (8)

It is a pipe making method for forming a helical spiral tube by joining edges adjacent to each other in the circumference of the belt-like member while winding the belt-like member spirally,
An annular outer periphery regulating body is installed so as to be slidable along the extending direction of the spiral tube,
In the inside of the outer periphery regulating body, a leading end portion in the extending direction of the preceding spiral pipe portion that has been piped in advance in the band-shaped member and a pipe making machine are disposed, and the leading edge in the band-shaped member is formed by the pipe making machine. Extending the preceding spiral tube portion by joining the adjacent edges of the subsequent band portion following the spiral tube portion and the preceding spiral tube portion on the inner peripheral surface of the outer periphery regulating body,
In accordance with the stretching, the outer periphery regulating body is advanced in the stretching direction. A pipe making device that forms a helical spiral tube by joining edges adjacent to each other around the belt-like member while spirally winding the belt-shaped member,
The outer circumference regulating means and the pipe making machine are provided.
The outer periphery restricting means includes an annular outer periphery restricting body and a slide mechanism that allows the outer periphery restricting body to slide along the extending direction of the spiral tube. The leading end of the leading spiral pipe part that has been piped and the pipe making machine are arranged,
The pipe making machine joins adjacent edges of a succeeding band and the preceding spiral pipe part following the preceding spiral pipe part in the band-shaped member on an inner peripheral surface of the outer periphery regulating body. Pipe making equipment.   The pipe making machine pushes the trailing band portion from the inside of the outer periphery restricting body toward the outer periphery restricting body to be fitted with the preceding spiral tube portion on the inner peripheral surface of the outer periphery restricting body and obtains a propulsive force. The pipe making apparatus according to claim 2, further comprising a pipe making drive unit.   The said pipe making machine contains the latching | locking part latched so that a slide in the extension direction of the strip | belt-shaped member which comprises this preceding spiral tube part with respect to the said preceding spiral tube part is possible. The pipe making apparatus described in 1.   The said outer periphery control body contains the connection material which connects the some control member arranged in the circumferential direction, and these control members so that isolation | separation is possible, The any one of Claims 2-4 characterized by the above-mentioned. Pipe making equipment.   The said slide mechanism contains the rail which guides the said outer periphery control body to the said extending | stretching direction, The pipe making apparatus of any one of Claims 2-5 characterized by the above-mentioned.   The said slide mechanism contains the wheel provided in the outer peripheral surface of the bottom part of the said outer periphery control body, The pipe making apparatus of any one of Claims 2-6 characterized by the above-mentioned.   The pipe making apparatus according to any one of claims 2 to 7, wherein the slide mechanism includes a slide drive unit that applies a forward force along the extending direction to the outer periphery regulating body.

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