Pipe making machine and pipe making method

Abstract

To provide a pipe making machine capable of forming properly a spiral pipe.SOLUTION: A pipe making machine, which is a push-type pipe making machine for forming a spiral pipe 202 in a manhole by using a lining member 12 and a connection member 14, and sending it into an existing pipe, includes a spiral winding guide device and a mating device 58. The mating device allows the connection member to mate with the lining member from the outer surface side, by butting together adjacent side edge parts of the spirally wound around lining member.SELECTED DRAWING: Figure 19

Description

[Technical field]

[0001] This invention relates to a pipe making machine that is installed inside a manhole and forms a helical pipe by spirally winding a lining material and connecting adjacent side edges of the lining material with a connecting member, and then sequentially feeding the formed helical pipe into an existing pipe, and a pipe making method using the same. [Background technology]

[0002] An example of this type of conventional pipe making machine is disclosed in Patent Document 1. The pipe making device (pipe making machine) of Patent Document 1 includes a rigid mounting box to which a drive motor is attached that holds a gear mechanism and applies a rotational drive force to the gear mechanism, an outer roller and an inner roller that are arranged at a closure portion between the tubular body (helical tube) being formed and a newly supplied strip-shaped member (lining member) and that clamp and drive the strip-shaped member, with at least the outer roller being a joining roller portion that operates in conjunction with the gear mechanism, a rigid surrounding box body that straddles the outer roller and is fixed to the mounting box, and an outer periphery regulating frame body that has a spiral ring-shaped frame structure that holds a plurality of rollers (outer guide rollers) arranged in parallel with each other, is fixed via the surrounding box body, and is arranged to make substantially one spiral revolution along the newly supplied strip-shaped member to the first closure portion of the strip-shaped member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5329370 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology of Patent Document 1, the side edges of the lining members are directly connected to each other to form the helical pipe, so when forming the helical pipe, it is necessary to simultaneously position and fit the lining members. This makes it difficult to match the perimeter (diameter) of adjacent lining members, and there is a risk that the helical pipe cannot be formed properly.

[0005] SUMMARY OF THE PRESENT EMBODIMENTS It is therefore a primary object of the present invention to provide a novel pipe making machine and method.

[0006] Another object of the present invention is to provide a pipe making machine and a pipe making method capable of properly forming a helical pipe. [Means for solving the problem]

[0007] The first invention is a pipe making machine that is installed in a manhole and that forms a helical pipe by winding a lining member in a helical shape and connecting adjacent side edges of the lining member with a connecting member, and sequentially feeds the formed helical pipe into an existing pipe. The machine is equipped with a spiral winding guide device that guides the lining member so as to wind it in a helical shape, and a fitting device that butts adjacent side edges of the helically wound lining member against each other and fits a connecting member to the lining member from the outer surface side of the lining member. The fitting device rotates while pressing the connecting portion of the lining member including the connecting member from the outer surface side to fit the connecting portion, and includes a fitting roller that applies a rotational force to the helical tube, a first hydraulic motor that rotates the fitting roller, and a first reaction force receiving roller that is provided at a position opposite to the fitting roller and presses the inner surface of the lining member so as to sandwich the connecting portion of the lining member between the fitting roller and the fitting roller. , a pipe making machine.

[0008] In the first invention, the pipe making machine is a push-type pipe making machine that sequentially feeds a spiral pipe formed in a manhole using a lining member and a connecting member into an existing pipe, and is equipped with a spiral winding guide device and a fitting device. The spiral winding guide device is a device that guides the lining member so that it is wound in a spiral shape. The fitting device is a device for connecting adjacent side edge portions of the spirally wound lining member with a connecting member, and fits the connecting member to the lining member from the outer surface side while the adjacent side edge portions of the lining members are butted against each other. This fitting device includes an fitting roller that rotates while pressing the connecting portion of the lining member including the connecting member from the outer surface side to fit the connecting portion and apply a rotational force to the helical tube, a first hydraulic motor that rotates the fitting roller, and a first reaction force receiving roller that is provided at a position opposite to the fitting roller and presses the inner surface of the lining member so as to sandwich the connecting portion of the lining member between the fitting roller and the fitting roller.

[0009] According to the first invention, when manufacturing a helical pipe, the side edges of the lining members are butted against each other, so that the positioning of the lining members can be easily performed. Also, since the connecting member is attached to the lining member from the outer surface side of the lining member, it is easy to manufacture a helical pipe even if it has a relatively small diameter. Furthermore, since the helical pipe is formed using two members, the lining member 1 and the connecting member, it is easy to match the circumferential lengths of adjacent lining members, and a helical pipe with a uniform diameter over the entire axial length can be formed. Therefore, the helical pipe can be formed appropriately.

[0011] No. 2 The invention is 1 The present invention is based on the above-mentioned invention, and further includes a connecting member guide device that guides the connecting member through the outside of the spiral winding guide device to the fitting device, and the fitting roller rotates while pressing the connecting member from the outer surface side, thereby drawing the connecting member into the fitting device without providing a driving unit in the connecting member guide device.

[0012] No. 2 According to the invention, since the connecting member guide device is provided, the connecting member can be appropriately guided to the fitting device. Also, since the connecting member is drawn into the fitting device using the rotational driving force of the fitting roller, the number of motors provided in the pipe making machine can be reduced.

[0013] No. 3 The invention is 1 Or 2 and further comprising a lining member feeding device which feeds the lining member into the spiral winding guide device, the lining member feeding device comprising a lining member feeding roller which rotates while pressing the inner or outer side of the lining member to provide a propulsive force to the lining member, a second hydraulic motor which rotates the lining member feeding roller, and a second reaction force receiving roller which is provided at a position opposite to the lining member feeding roller and presses the outer or inner side of the lining member so as to sandwich the lining member between the lining member feeding roller and the lining member feeding roller, and the circumferential speed of the lining member feeding roller is set to a value greater than the circumferential speed of the engagement roller.

[0014] No. 3 According to the invention, since the lining member feed roller is rotationally driven by the second hydraulic motor, the lining member can be appropriately fed into the spiral winding guide device. Also, since the peripheral speed of the lining member feed roller is set to a value higher than the peripheral speed of the fitting roller, the lining member can be appropriately pressed against the outer guide roller, and a cylindrical spiral tube can be appropriately formed.

[0015] No. 4 The invention is 3 According to the invention, the outer circumferential surface of the engaging roller is subjected to anti-slip treatment, and the driving force of the second hydraulic motor is set to a value smaller than the driving force of the first hydraulic motor.

[0016] No. 4 According to the invention, the outer peripheral surface of the engaging roller is treated with an anti-slip treatment, so that the driving force of the engaging roller can be more appropriately transmitted to the connecting portion of the lining member. Also, the driving force of the second hydraulic motor is set to a value smaller than the driving force of the first hydraulic motor, so that the lining member can be more appropriately pressed against the outer guide roller without affecting the rotation of the engaging roller.

[0017] No. 5 The invention is 1 From 4 The present invention is based on any one of the above-mentioned inventions, and further includes an overall rotation device for rotating the formed helical tube, the overall rotation device including a helical tube feed roller that rotates while pressing against the outer surface side of the helical tube to apply a rotational force to the helical tube, a third hydraulic motor that rotates the helical tube feed roller, and a third reaction force receiving roller that is arranged opposite to the helical tube feed roller and presses against the inner surface side of the helical tube so as to sandwich the helical tube between the helical tube feed roller and the third reaction force receiving roller, and the peripheral speed of the helical tube feed roller is set to a value smaller than the peripheral speed of the engagement roller.

[0018] No. 5According to the invention, since the whole rotating device is provided, the formed helical tube can be pushed into the existing pipe while being rotated appropriately. Also, a hydraulic motor is used as a drive source for individually rotating the fitting roller of the fitting device and the helical tube feed roller of the whole rotating device, and the peripheral speed of the helical tube feed roller is set to a value smaller than the peripheral speed of the fitting roller, so that the fitting roller of the fitting device and the helical tube feed roller of the whole rotating device can be appropriately synchronized.

[0019] No. 6 The invention is 5 According to the invention, the outer circumferential surface of the spiral tube feed roller is subjected to an anti-slip treatment, and the driving force of the third hydraulic motor is set to a value greater than the driving force of the first hydraulic motor.

[0020] No. 6 According to the invention, since the outer peripheral surface of the helical tube feed roller is subjected to anti-slip treatment, the driving force of the helical tube feed roller can be more appropriately transmitted to the helical tube. Also, since the driving force of the third hydraulic motor is set to a value larger than the driving force of the first hydraulic motor, the fitting roller of the fitting device and the helical tube feed roller of the whole rotating device can be more appropriately synchronized.

[0021] No. 7 The inventions are the first to the second 6 This is a pipe-making method for forming a helical pipe using a pipe-making machine according to any one of the above inventions, in which adjacent side edges of a helically wound lining member are abutted against each other and a connecting member is fitted to the lining member from the outer surface side of the lining member to form the helical pipe.

[0022] No. 7 According to the second invention, the same effect as that of the first invention is obtained, the positioning of the lining member can be easily performed, and even a helical pipe with a relatively small diameter can be easily manufactured. In addition, the circumferential lengths of adjacent lining members can be easily matched, and a helical pipe with a uniform diameter over the entire axial length can be formed. Therefore, the helical pipe can be appropriately formed. Effect of the Invention

[0023] According to this invention, when manufacturing a helical pipe, the side edges of the lining members are butted against each other, so that the positioning of the lining members can be easily performed. Also, since the connecting member is attached to the lining member from the outer surface side of the lining member, it is easy to manufacture a helical pipe even if it has a relatively small diameter. Furthermore, since the helical pipe is formed using two members, the lining member 1 and the connecting member, it is easy to match the circumferential lengths of adjacent lining members, and a helical pipe with a uniform diameter over the entire axial length can be formed. Therefore, the helical pipe can be formed appropriately.

[0024] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the embodiments with reference to the drawings. [Brief description of the drawings]

[0025] [Figure 1] 1 is a schematic diagram showing the process of rehabilitating an existing pipe using a pipe making machine according to one embodiment of the present invention; FIG. [Diagram 2] FIG. 2 is a perspective view showing an example of a lining member. [Diagram 3] FIG. 3 is a cross-sectional view showing the lining member of FIG. 2. [Figure 4] FIG. 4 is a perspective view showing an example of a connecting member. [Diagram 5] FIG. 5 is a cross-sectional view showing the connecting member of FIG. [Figure 6] 5 is a cross-sectional view showing a state in which side edge portions of the lining member of FIG. 2 are connected to each other using the connecting member of FIG. 4. FIG. [Figure 7] 1 is a front view showing a pipe making machine according to one embodiment of the present invention as viewed from the existing pipe side. [Figure 8] FIG. 8 is a plan view showing the pipe making machine of FIG. [Figure 9] 8 is a front view showing a spiral winding guide device provided in the pipe making machine of FIG. 7. [Figure 10] 10 is a rear view showing the spiral winding guide device of FIG. 9. [Figure 11] 10 is a development view showing the spiral winding guide device of FIG. 9. [Figure 12] 8 is a front view showing a lining material feeding device provided in the pipe making machine of FIG. 7. [Figure 13] 13 is a left side view showing the lining member feeding device of FIG. 12. [Figure 14] 13 is a cross-sectional view showing a periphery of a lining member feeding roller of the lining member feeding device of FIG. 12. [Figure 15] 13 is a plan view showing a four-way guide roller provided in the lining member feeding device of FIG. 12. FIG. [Figure 16] 13 is a cross-sectional view showing the periphery of a group of buckling prevention guide rollers of the lining member feeding device of FIG. 12. FIG. [Figure 17] 8 is a front view showing a connecting member guide device provided in the pipe making machine of FIG. 7. [Figure 18] 8 is a front view showing a fitting device provided in the pipe making machine of FIG. 7. [Figure 19] 19 is a right side view showing the fitting device of FIG. 18. [Figure 20] 19 is a cross-sectional view showing a fitting roller and a reaction force receiving roller of the fitting device of FIG. 18 and their surroundings. [Figure 21] 19 is a cross-sectional view showing a fitting roller included in the fitting device of FIG. 18. [Figure 22] 8 is a front view showing an overall rotation device provided in the pipe making machine of FIG. 7. [Figure 23] FIG. 23 is a cross-sectional view showing the entire rotating device of FIG. 22. [Figure 24] FIG. 8 is an illustrative diagram showing the pipe making machine of FIG. 7 installed inside a manhole. [Diagram 25] This is a cross-sectional view showing how an existing pipe has been rehabilitated using a spiral pipe. [Figure 26] FIG. 11 is a cross-sectional view showing another example of a whole rotation device. [Figure 27] FIG. 11 is a cross-sectional view showing another example of the engaging roller. [Figure 28] FIG. 11 is a cross-sectional view showing still another example of the engaging roller. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] 1, a pipe making machine 50 according to one embodiment of the present invention is a pipe making machine of a front push type that makes a helical pipe 202 (lining pipe) for rehabilitating an existing pipe 200 inside a manhole 210 and pushes it into the existing pipe 200. As will be described in detail later, the pipe making machine 50 spirally winds the lining member 12 and connects adjacent side edges of the helically wound lining member 12 with a connecting member 14 to form the helical pipe 202, while sequentially feeding the formed helical pipe 202 into the existing pipe 200.

[0027] The pipe making machine 50 according to the present invention can be used to rehabilitate various existing pipes 200, such as those made of reinforced concrete, synthetic resin, and metal. The pipe making machine 50 is also suitable for use in rehabilitating sewer pipes with a medium diameter of 300 mm or more and less than 1000 mm, which is difficult for workers to enter and work inside, and is particularly suitable for use in rehabilitating sewer pipes with a diameter of 600 mm or more and less than 1000 mm. However, the pipe making machine 50 can also be used to rehabilitate existing pipes 200 with a diameter of 1000 mm or more.

[0028] First, prior to a specific description of the pipe making machine 50, an example of the pipe rehabilitation member 10 used in this embodiment will be described. However, the specific configuration and shape of the pipe rehabilitation member 10 described below are merely examples and are not limited thereto.

[0029] As shown in FIG. 1, the pipe rehabilitation member 10 is a member for forming a helical pipe 202, and includes a long strip-shaped lining member 12 and a long strip-shaped connecting member 14 for connecting adjacent side edges of the helically wound lining member 12. In this embodiment, the lining member 12 has an engaging portion (first engaging portion 22) with the connecting member 14 on the outer surface side when wound helically, and the connecting member 14 is engaged with the lining member 12 from the outer surface side of the helically wound lining member 12. The outer diameter of the helical pipe 202 formed by using the pipe rehabilitation member 10 is set to be slightly smaller than the inner diameter of the existing pipe 200. The configurations of the lining member 12 and the connecting member 14 will be specifically described below.

[0030] 2 and 3, the lining member 12 is a long member that is a main component of the helical pipe 202, and includes a strip-shaped substrate 20 (lining substrate). One main surface 20a of the substrate 20 is a surface that constitutes the inner surface of the helical pipe 202, and is a smooth surface. The width of the substrate 20 is, for example, 75 mm, and the thickness (wall thickness) of the substrate 20 is, for example, 2.5 mm.

[0031] A first fitting portion 22 is formed on each of both sides of the other main surface 20b of the base 20, that is, the outer surface side when the lining member 12 is wound in a spiral shape, to be fitted with a second fitting portion 32 of the connecting member 14 described later. The first fitting portion 22 includes a first engagement portion 24 formed on both side edges of the other main surface 20b of the base 20, and a third engagement portion 26 formed on the width direction inner side of the base 20 than the first engagement portion 24. The first engagement portion 24 and the third engagement portion 26 are protrusions extending in the longitudinal direction of the base 20, and the first engagement portion 24 and the third engagement portion 26 are formed at the tip portions thereof with locking pieces 24a, 26a protruding toward the width direction inner side of the base 20.

[0032] Further, in the widthwise center of the base 20, a displacement absorbing section 28 is formed by loosening a part of the base 20 in the width direction so as to protrude toward the other main surface 20b. The displacement absorbing section 28 has a pair of side walls 28a formed so as to widen in the width direction with increasing distance from the one main surface 20a, and a connecting section 28b connecting the tips of the side walls 28a. The protruding height of the displacement absorbing section 28 from the other main surface 20b is, for example, 12 mm.

[0033] Such a lining member 12 is integrally molded by extrusion molding of synthetic resin such as polyethylene resin, polypropylene resin, nylon resin, fluororesin, hard polyvinyl chloride resin, etc. The lining member 12 of this embodiment is formed of high-density polyethylene resin, and the first fitting portion 22 including the first engagement portion 24 and the third engagement portion 26 and the displacement absorbing portion 28 are formed over the entire length of the base body 20 in the longitudinal direction.

[0034] 4 and 5, the connecting member 14 is a long member for connecting side edges of the lining member 12, and includes a connecting member main body 16 and a reinforcing member 18. The connecting member 14 is a member attached from the outer surface side (the other main surface 20b side) of the lining member 12 as described above, and is disposed on the outer surface side of the helical pipe 202 in a state in which the helical pipe 202 is formed using the lining member 12 and the connecting member 14.

[0035] The connecting member main body 16 includes a strip-shaped base body 30 (connecting base body). The width of the base body 30 is, for example, 37 mm, and the thickness of the base body 30 is, for example, 3 mm. One main surface 30a of the base body 30 is a surface facing the other main surface 20b of the base body 20 of the lining member 12, and a second fitting portion 32 that fits with the first fitting portion 22 of the lining member 12 is formed on the one main surface 30a of the base body 30. The second fitting portion 32 includes a second engaging portion 34 that engages with the first engaging portion 24 and a fourth engaging portion 36 that engages with the third engaging portion 26. The second engaging portion 34 and the fourth engaging portion 36 are protrusions extending in the longitudinal direction of the base body 30, and the tip portions of the second engaging portion 34 and the fourth engaging portion 36 are formed with locking pieces 34a and 36a that protrude toward the inside in the width direction of the base body 30, respectively.

[0036] Furthermore, water-stopping parts 38 formed in a strip shape from an elastomer or the like, which is an elastic body, are provided on one main surface 30a of the base body 30 between the second engaging part 34 and the fourth engaging part 36 and between the second engaging parts 34 themselves. When the first fitting part 22 of the lining member 12 and the second fitting part 32 of the connecting member 14 are fitted together, the water-stopping parts 38 are sandwiched between the one main surface 30a of the base body 30 and the tips of the first engaging part 24 and the third engaging part 26 of the lining member 12, and are thus sufficiently compressed (see FIG. 6). This ensures water-tightness at the connecting parts between the side edges of the lining member 12.

[0037] Meanwhile, the other main surface 30b of the base 30 is a surface facing the inner surface of the existing pipe 200, and a pair of holding portions 40 for holding the reinforcing member 18 are formed on both side edges of the other main surface 30b of the base 30. Each of the pair of holding portions 40 is a protrusion extending in the longitudinal direction of the base 30, and a claw portion 40a protruding toward the inside in the width direction of the base 30 is formed at the tip of the pair of holding portions 40.

[0038] Such a connecting member body 16 is integrally formed by extrusion molding of synthetic resin such as rigid polyvinyl chloride resin, nylon resin, fluororesin, polyethylene resin, polypropylene resin, etc. The connecting member body 16 of this embodiment is formed of rigid polyvinyl chloride resin, and the second fitting portion 32 including the second engaging portion 34 and the fourth engaging portion 36 and the pair of holding portions 40 are formed over the entire length in the longitudinal direction of the base body 30. In addition, the water stop portion 38 is provided over the entire length in the longitudinal direction by co-extrusion with the connecting member body 16.

[0039] A long reinforcing member 18 is provided on the other main surface 30b of the base 30 of the connecting member main body 16 over the entire length of the connecting member main body 16 in the longitudinal direction by being fitted between a pair of holding parts 40. In this embodiment, a strip-shaped metal member (e.g., strip steel) is used as the reinforcing member 18. The reinforcing member 18 has a rectangular cross-sectional shape, and its width is, for example, 30 mm, and its thickness is, for example, 2.5 mm. By providing the connecting member 14 with the reinforcing member 18, the rigidity of the connecting portion of the helical tube 202 (the portion where the side edges of the lining member 12 are connected to each other by the connecting member 14) can be increased, and the rigidity of the helical tube 202 can be increased as a result.

[0040] As shown in Fig. 6, when adjacent side edges of the spirally wound lining member 12 are connected by the connecting member 14, the side edges of the base 20 of the lining member 12 are butted against each other so that the main surfaces 20a of the bases 20 of the lining member 12 are flush with each other. Then, the connecting member 14 is pressed from the outer surface side of the spirally wound lining member 12, and the second fitting portion 32 of the connecting member 14 is fitted sequentially in the longitudinal direction into the first fitting portion 22 of the lining member 12. Then, the first engaging portion 24 and the third engaging portion 26 of the first fitting portion 22 are engaged by the second engaging portion 34 and the fourth engaging portion 36 of the second engaging portion 32, respectively, and the side edges of the lining member 12 are connected by the connecting member 14.

[0041] Next, the configuration of the pipe making machine 50 will be specifically described with reference to Figures 7 to 23. As shown in Figures 7 and 8, the pipe making machine 50 is equipped with a spiral winding guide device 52 that guides the lining member 12 so as to wind it in a spiral shape. This spiral winding guide device 52 is equipped with a lining member feed device 54, a connecting member guide device 56, a fitting device 58, an overall rotation device 60, legs 62, etc.

[0042] In this case, when looking at the pipe making machine 50 in the axial direction of the existing pipe 200, the entire rotation device 60 is preferably disposed at the top of the pipe making machine 50, and the lining member feeding device 54 and the fitting device 58 are preferably disposed in the upper half of the pipe making machine 50, on both sides of the entire rotation device 60. This allows the width of the pipe making machine 50 as a whole to be reduced, and the pipe making machine 50 can be suitably installed even in a narrow manhole 210. In this embodiment, the entire rotation device 60 is disposed at the top (i.e., 0 o'clock direction). Also, when looking at the pipe making machine 50 from the side of the existing pipe 200 to be rehabilitated, the lining member feeding device 54 is disposed at a circumferential position 60 degrees counterclockwise from the entire rotation device 60 (i.e., 10 o'clock direction), and the fitting device 58 is disposed at a circumferential position 45 degrees clockwise from the entire rotation device 60 (i.e., 1:30 direction).

[0043] As shown in Figures 9-11, the spiral winding guide device 52 includes a plurality of outer guide rollers 70 that guide the lining member 12 so as to wind it in a spiral shape, and a cylindrical frame member 72 that holds these multiple outer guide rollers 70.

[0044] The frame member 72 is made of a metal such as stainless steel, and has a cylindrical portion 72a, a first annular plate portion 72b protruding outward from the front end edge of the cylindrical portion 72a, and a second annular plate portion 72c protruding inward from the rear end edge of the cylindrical portion 72a. By using the cylindrical frame member 72, the multiple outer guide rollers 70 can be appropriately held in a spiral arrangement as described below.

[0045] Each of the outer guide rollers 70 includes a pair of rollers spaced apart in the front-rear direction (i.e., the width direction of the lining member 12), and is rotatably mounted on a rotating shaft attached to the inner surface of the cylindrical portion 72a via a bearing such as a deep groove ball bearing. The pair of rollers is made of metal, and the outer peripheral surface thereof is a smooth cylindrical surface without unevenness in the circumferential direction. The outer guide rollers 70 are arranged in a spiral shape at intervals in the circumferential direction of the cylindrical portion 72a (and thus in the circumferential direction of the existing pipe 200 and the spiral pipe 202), and the axial direction of each outer guide roller 70 is inclined at a predetermined inclination angle with respect to the axial direction of the frame member 72. The outer guide rollers 70 are preferably arranged over two revolutions (720 degrees) or more of the lining member 12 wound in a spiral shape, and in this embodiment, they are arranged over 2.75 revolutions (990 degrees) of the lining member 12.

[0046] The distance W1 between the outer guide rollers 70 in the front-rear direction is set to the same size as the width of the base body 20 of the lining member 12 so that the side edges of the base body 20 of the lining member 12 wound in a spiral shape can be butted against each other. The distance W2 between the pair of rollers of each outer guide roller 70 in the front-rear direction is set to a distance that allows each of the pair of rollers to enter between the first fitting portion 22 (the outer surface of the connecting member 14 after the connecting member 14 is fitted) of the lining member 12 and the displacement absorbing portion 28 and to abut against the other main surface 20b of the base body 20. However, at a position where it interferes with the fitting device 58 or the entire rotation device 60, one of the pair of rollers of the outer guide rollers 70 is omitted, or the distance between the outer guide rollers 70 in the circumferential direction is changed.

[0047] Such a plurality of outer guide rollers 70 guide the lining member 12 so as to wind it in a spiral shape while butting the side edges of adjacent base bodies 20 against each other. By arranging the outer guide rollers 70 in a spiral shape, the lining member 12 can be appropriately guided in a spiral shape, and each of the pair of rollers constituting the outer guide rollers 70 can be inserted between the first fitting portion 22 and the displacement absorbing portion 28 of the lining member 12, so that the positioning of the lining member 12 in the axial direction of the helical tube 202 can be automatically performed. In particular, by butting the side edges of adjacent base bodies 20 against each other, the positioning of the lining member 12 in the axial direction of the helical tube 202 can be more appropriately performed.

[0048] Moreover, the outer guide rollers 70 come into contact with the other main surface 20b (i.e., the outer surface of the lining member 12) of the base body 20 of the lining member 12 wound in a spiral shape, thereby defining the outer diameter of the helical tube 202. This allows the helical tube 202 to be formed to a constant size based on the outer diameter. Furthermore, each of the outer guide rollers 70 pushes the formed helical tube 202 forward (toward the existing pipe 200) by the front side surfaces of the pair of rollers coming into contact with the first fitting portion 22 of the lining member 12 or the rear side surface of the connecting member 14. Each of the outer guide rollers 70 pushes the helical tube 202, thereby increasing the pushing force, and the helical tube 202 can be appropriately pushed into the existing pipe 200.

[0049] As can be seen clearly from FIG. 11, the cylindrical portion 72a of the frame member 72 has openings for mounting the lining member feed device 54, the connecting member guide device 56, the fitting device 58, and the entire rotation device 60, in that order from the upstream side in the feed direction of the lining member 12. Specifically, a first opening 72d into which the lining member feed device 54 is fitted is formed upstream of the outer guide roller 70 arranged on the most upstream side in the 10 o'clock direction when looking at the pipe making machine 50 from the existing pipe 200 side. This first opening 72d serves as the entrance of the lining member 12 into the spiral winding guide device 52. A second opening 72e into which the downstream end of the connecting member guide device 56 is fitted is formed between the outer guide rollers 70 arranged about half a turn and about one and a half turns from the most upstream side in the 2:30 direction when looking at the pipe making machine 50 from the existing pipe 200 side. This second opening 72e serves as the entrance of the connecting member 14 into the spiral winding guide device 52. Furthermore, a third opening 72f into which the fitting device 58 is fitted is formed downstream of the second opening 72e in the 1:30 direction when looking at the pipe making machine 50 from the existing pipe 200 side. A fourth opening 72g into which the overall rotation device 60 is fitted is formed downstream of the third opening 72f in the 0:00 direction when looking at the pipe making machine 50 from the existing pipe 200 side.

[0050] 12 to 16, the lining member feed device 54 is a device that feeds the lining member 12 supplied from the ground into the spiral winding guide device 52, and includes a feed device main body 74, a four-directional guide roller 76, and a buckling prevention guide roller group 78. The lining member feed device 54 is fixed to the frame member 72 of the spiral winding guide device 52 using fastening members such as bolts. At this time, the buckling prevention guide roller group 78 is fitted into the first opening 72d of the frame member 72 of the spiral winding guide device 52.

[0051] The feed device main body 74 includes a pair of rollers, i.e., a lining member feed roller 74a and a reaction force receiving roller 74b (an example of a second reaction force receiving roller), arranged to sandwich the lining member 12 in the thickness direction. The lining member feed roller 74a is disposed on the inner surface side of the lining member 12, and the reaction force receiving roller 74b is disposed on the outer surface side of the lining member 12.

[0052] The lining member feed roller 74a is provided rotatably via a bearing so as to extend in the front-rear direction. The lining member feed roller 74a has a cylindrical base body made of metal and an outer circumferential portion (surface layer) formed of a soft material such as urethane rubber and provided so as to cover the base body, and the outer circumferential surface is a smooth cylindrical surface without unevenness in the circumferential direction. A hydraulic motor 74c (an example of a second hydraulic motor) is connected to the lining member feed roller 74a. The lining member feed roller 74a is driven to rotate by receiving a driving force from the hydraulic motor 74c, and applies a propulsive force to the lining member 12 toward the spiral winding guide device 52 by rotating while pressing the inner surface side of the lining member 12 (specifically, one main surface 20a of the base body 20).

[0053] On the other hand, the reaction force receiving roller 74b is provided rotatably via a bearing at a position facing the lining member feed roller 74a. The reaction force receiving roller 74b is made of metal, and its outer circumferential surface is formed to a shape that matches the shape of the outer surface side of the lining member 12. In this embodiment, the outer surface side of the lining member 12 has a shape in which the displacement absorbing portion 28 protrudes more than the first fitting portion 22, so that an annular groove 74d into which the tip end of the displacement absorbing portion 28 can be fitted is formed in the axial center of the outer circumferential surface of the reaction force receiving roller 74b. The reaction force receiving roller 74b rotates while pressing the outer surface side of the lining member 12 (specifically, the first fitting portion 22 and the tip end of the displacement absorbing portion 28) in accordance with the rotational drive of the lining member feed roller 74a (transport of the lining member 12). In addition, the tip end of the displacement absorbing portion 28 is fitted into the annular groove 74d, thereby restricting the movement of the lining member 12 in the width direction. The lining member feed roller 74a and the reaction force receiving roller 74b may be arranged in reverse, so that the lining member feed roller 74a, which is a drive roller, presses the outer surface side of the lining member 12.

[0054] The four-way guide roller 76 is provided upstream of the feed device main body 74 (lining member feed roller 74a) in the feed direction of the lining member 12. The four-way guide roller 76 has at least four regulating rollers rotatably provided so as to surround the inner and outer surfaces and both side surfaces of the lining member 12. In this embodiment, the four-way guide roller 76 is made of metal and includes two pairs of rollers 76a for regulating the thickness direction provided at an interval in the feed direction of the lining member 12, and a pair of rollers 76b for regulating the width direction provided between the pairs of rollers 76a. Such a four-way guide roller 76 guides the lining member 12 between the lining member feed roller 74a and the reaction force receiving roller 74b while regulating the movement of the lining member 12 in the thickness direction and the width direction. Therefore, by providing the four-way guide roller 76 in the lining member feed device 54, the lining member 12 can be smoothly guided between the lining member feed roller 74a and the reaction force receiving roller 74b.

[0055] The buckling prevention guide roller group 78 is provided downstream of the feed device main body 74 (lining member feed roller 74a) in the feed direction of the lining member 12. The buckling prevention guide roller group 78 includes a plurality of roller pairs 78a rotatably provided to sandwich the lining member 12 from the outer surface side and the inner surface side. In this embodiment, the roller pair 78a is made of metal and is composed of a pair of rollers 78b arranged at positions corresponding to both ends in the width direction of the lining member 12. That is, the roller pair 78a includes four rollers 78b arranged to sandwich both ends in the width direction of the lining member 12 from the outer surface side and the inner surface side. The plurality of roller pairs 78a are arranged in a straight line along the feed direction of the lining member 12 so as to connect between the lining member feed roller 74a and the outer guide roller 70 arranged at the most upstream side of the spiral winding guide device 52. Furthermore, a rectangular regulating frame 78c is provided at the downstream end of the buckling prevention guide roller group 78 so as to surround the roller pairs 78a. Such a buckling prevention guide roller group 78 guides the lining member 12 into the spiral winding guide device 52 while regulating the movement of the lining member 12 in the thickness direction by the multiple roller pairs 78a. Furthermore, the movement of the lining member 12 in the width direction is regulated by the regulating frame 78c. Therefore, by providing the lining member feed device 54 with the buckling prevention guide roller group 78, the lining member 12 can be smoothly guided into the spiral winding guide device 52 while preventing the lining member 12 from buckling.

[0056] As shown in FIG. 17, the connecting member guide device 56 is a device that guides the connecting member 14 supplied from the ground into the fitting device 58, and is formed in a cylindrical shape from a metal such as stainless steel. When the pipe making machine 50 is viewed from the existing pipe 200 to be rehabilitated, the connecting member guide device 56 has an inlet portion 56a (upstream end portion) that receives the connecting member 14 at 10:30. The connecting member guide device 56 passes through the outside of the lower half of the cylindrical portion 72a of the frame member 72 provided in the spiral winding guide device 52 and extends to a position near the fitting device 58, and its outlet portion 56b (downstream end portion) is fitted into the second opening 72e of the frame member 72. In addition, a bulging portion 56c that bulges toward the radially outward direction of the frame member 72 is formed on the upstream side of the outlet portion 56b, and the outlet portion 56b extends linearly along the tangential direction at the fitting position of the lining member 12.

[0057] By providing such a connecting member guide device 56 in the pipe making machine 50, the connecting member 14 can be smoothly guided to the fitting device 58, and the side edges of the lining member 12 can be properly connected to each other by the connecting member 14 in the fitting device 58. Furthermore, by forming the connecting member guide device 56 in a cylindrical shape, the connecting member 14 is prevented from coming into contact with the water in the manhole 210 and becoming dirty, and from being adhered with debris such as shavings to the connecting member 14. In particular, if foreign matter adheres to the water stop portion 38 provided in the connecting member 14, there is a risk that the water stop portion 38 will not properly perform its water stop action, but this is prevented by the cylindrical connecting member guide device 56.

[0058] 18 to 21, the fitting device 58 is a device for connecting adjacent side edges of the spirally wound lining member 12. In this embodiment, the fitting device 58 connects adjacent side edges of the lining member 12 by butting the adjacent side edges of the lining member 12 against each other and fitting the connecting member 14 from the outer surface side of the lining member 12.

[0059] Specifically, the fitting device 58 includes a pair of rollers, i.e., a fitting roller 80 and a reaction force receiving roller 82 (an example of a first reaction force receiving roller), that are arranged to sandwich the connecting portion of the lining member 12 including the connecting member 14 in the thickness direction. The fitting device 58 is fixed to the frame member 72 of the spiral winding guide device 52 using a fastening member such as a bolt. At this time, the fitting roller 80 is fitted into the third opening 72f of the frame member 72 of the spiral winding guide device 52, and a part of the fitting roller 80 protrudes into the cylindrical portion 72a of the frame member 72.

[0060] The axial direction of the fitting roller 80 and the reaction force receiving roller 82 is the same direction (parallel) as the axial direction of the outer guide roller 70. The fitting roller 80 and the reaction force receiving roller 82 are provided at axial positions corresponding to between a position 0.65 revolutions (225 degrees) and a position 1.65 revolutions (585 degrees) after the lining member 12 is transported into the frame member 72 of the spiral winding guide device 52. One of the outer guide rollers 70 is provided behind the circumferential position where the fitting roller 80 is provided. This outer guide roller 70 abuts against the outer surface of the lining member 12 to be newly fitted. By providing the outer guide roller 70 in the same circumferential position as the fitting roller 80, the stability of the fitting between the lining member 12 and the connecting member 14 can be improved.

[0061] The fitting roller 80 is rotatably provided via a bearing so as to abut against the outer surface side of the connecting member 14. The fitting roller 80 is made of metal, and its outer circumferential surface 80a is formed into a shape that matches the shape of the outer surface side of the connecting member 14. In this embodiment, the outer surface side of the connecting member 14 is shaped such that the pair of holding parts 40 on both sides in the width direction protrude further than the reinforcing member 18 in the width direction center, so that an annular protrusion 80b that can be fitted between the pair of holding parts 40 and abut against the outer surface of the reinforcing member 18 is formed in the axial center of the outer circumferential surface 80a of the fitting roller 80.

[0062] In addition, the outer peripheral surface 80a of the fitting roller 80 is subjected to an anti-slip treatment. In this embodiment, the outer peripheral surface 80a of the fitting roller 80 is formed in a rough surface with a plurality of fine irregularities. This anti-slip treatment prevents slippage between the fitting roller 80 and the connecting member 14, and the rotational driving force of the fitting roller 80 is appropriately transmitted to the connecting member 14 (and thus the helical tube 202). However, this anti-slip treatment may be applied to the entire outer peripheral surface 80a of the fitting roller 80, or may be applied only to the contact portion with the connecting member main body 16. In addition, when the fitting roller 80 is formed of a material that does not cause slippage between the fitting roller 80 and the connecting member 14, it is not necessarily required to apply the anti-slip treatment to the outer peripheral surface 80a of the fitting roller 80.

[0063] A hydraulic motor 86 (an example of a first hydraulic motor) is connected to the fitting roller 80 via a gear portion 84. The fitting roller 80, the gear portion 84 and the hydraulic motor 86 are integrally held by a support frame 88. This support frame 88 is biased toward the reaction force receiving roller 82 by a compression coil spring 90, which enables the fitting roller 80 to press the outer surface side of the connecting member 14 with a predetermined pressing force (for example, 100 kgf). Also, by changing the amount of pressing of the bolt 92, it is possible to change the pressing force of the fitting roller 80 against the connecting member 14.

[0064] The fitting roller 80 is driven to rotate by receiving a driving force from a hydraulic motor 86, and rotates while pressing the connecting portion of the lining member 12 (specifically, the reinforcing member 18 and the pair of holding portions 40 of the connecting member 14) from the outer surface side, thereby fitting the second fitting portion 32 of the connecting member 14 into the first fitting portion 22 of the lining member 12, and applying a rotational force to the formed spiral pipe 202. In addition, the fitting roller 80 rotates while pressing the connecting member 14 from the outer surface side, thereby sequentially drawing the connecting member 14 into the fitting device 58 without providing a driving portion to the connecting member guide device 56. This allows the number of motors provided in the pipe making machine 50 to be reduced. Furthermore, the fitting roller 80 rotates while pressing the connecting member 14 from the outer surface side, thereby providing the lining member 12 with an auxiliary propulsive force for drawing the lining member 12 into the spiral winding guide device 52. That is, in this embodiment, while the lining member 12 is being fed by the driving forces of both the fitting device 58 and the lining member feed device 54, the connecting members 14 are successively fitted onto adjacent side edges of the lining member 12.

[0065] On the other hand, the reaction force receiving roller 82 is provided rotatably via a bearing at a position facing the fitting roller 80. The reaction force receiving roller 82 has a cylindrical base body made of metal and an outer periphery formed of a soft material such as urethane rubber and provided so as to cover the base body, and the outer periphery is a smooth cylindrical surface without unevenness in the circumferential direction. A hydraulic motor 94 is connected to this reaction force receiving roller 82. The reaction force receiving roller 82 is rotated by receiving a driving force from the hydraulic motor 94, and presses the inner side of the connecting portion of the lining member 12 (specifically, a position straddling one main surface 20a of the adjacent base bodies 20) so as to sandwich the connecting portion of the lining member 12 between the fitting roller 80 and the reaction force receiving roller 82. In addition, the reaction force receiving roller 82 not only receives the reaction force from the fitting roller 80, but also functions as a shape correction roller that adjusts the shape of the spiral tube 202 into a cylindrical shape by rotating while pressing the inner side of the lining member 12. Furthermore, the reaction force receiving roller 82 rotates while pressing the inner surface side of the lining member 12 , thereby providing the lining member 12 with an auxiliary propulsive force for drawing the lining member 12 into the spiral winding guide device 52 .

[0066] As shown in Fig. 22 and Fig. 23, the whole rotating device 60 is a device for rotating the whole of the formed helical tube 202. The whole rotating device 60 includes a pair of rollers, i.e., a helical tube feed roller 100 and a reaction force receiving roller 102 (an example of a second reaction force receiving roller), arranged to sandwich the helical tube 202 from the outer surface side and the inner surface side. The whole rotating device 60 is fixed to the frame member 72 of the helical winding guide device 52 using a fastening member such as a bolt. At this time, the helical tube feed roller 100 is fitted into the fourth opening 72g of the frame member 72 of the helical winding guide device 52, and a part (lower part) of the helical tube feed roller 100 protrudes into the cylindrical part 72a of the frame member 72.

[0067] The axial direction of the helical tube feed roller 100 and the reaction force receiving roller 102 is the same direction (parallel) as the axial direction of the outer guide roller 70. The helical tube feed roller 100 is provided at an axial position corresponding to a position 1.75 revolutions (630 degrees) after the lining member 12 is transported into the frame member 72 of the helical winding guide device 52. One of the outer guide rollers 70 is provided behind the circumferential position where the helical tube feed roller 100 is provided. This outer guide roller 70 abuts against the outer surface of the lining member 12 to be newly fitted. By providing the outer guide roller 70 in the same circumferential position as the helical tube feed roller 100, the stability of power transmission to the helical tube 202 can be improved.

[0068] On the other hand, the reaction force receiving roller 102 is arranged to span three turns (270 degrees), 1.75 turns (630 degrees), and 2.75 turns (990 degrees) after the lining member 12 is transported into the frame member 72 of the spiral winding guide device 52, that is, to span three turns of the lining member 12.

[0069] The helical tube feed roller 100 is rotatably mounted via a bearing so as to abut against the outer surface of the helical tube 202 (specifically, the other main surface 20b of the base body 20 of the lining member 12). In this embodiment, the helical tube feed roller 100 includes two rollers spaced apart in the front-rear direction. The helical tube feed roller 100 is made of metal, and its outer circumferential surface 100a is treated to be non-slip. In this embodiment, the outer circumferential surface 100a of the helical tube feed roller 100 is formed with a plurality of protrusions extending along the axial direction and arranged at predetermined intervals in the circumferential direction. This non-slip treatment prevents slippage between the helical tube feed roller 100 and the lining member 12, and the rotational driving force of the helical tube feed roller 100 is appropriately transmitted to the lining member 12 (and thus the helical tube 202). However, in cases where the helical tube feed roller 100 is formed of a material that does not cause slippage between the helical tube feed roller 100 and the lining member 12, it is not necessarily necessary to apply an anti-slip treatment to the outer peripheral surface 100a of the helical tube feed roller 100.

[0070] A hydraulic motor 106 (an example of a third hydraulic motor) is connected to the helical tube feed roller 100 via a gear unit 104. The helical tube feed roller 100, the gear unit 104 and the hydraulic motor 106 are integrally held by a support frame 110 that is provided so as to be rotatable in the vertical direction via a hinge unit 108. The support frame 110 is biased toward the reaction force receiving roller 102 by a compression coil spring 112, which enables the helical tube feed roller 100 to press the outer surface of the lining member 12 with a predetermined pressing force. The pressing force of the helical tube feed roller 100 against the lining member 12 can also be changed by changing the pressing amount of the bolt 114.

[0071] Such a helical tube feed roller 100 is rotationally driven by a driving force from a hydraulic motor 106, and rotates while pressing the helical tube 202 from the outer surface side, thereby applying a rotational force to the helical tube 202. In addition, the helical tube feed roller 100 rotates while pressing the helical tube 202 from the outer surface side, thereby supplementarily applying a propulsive force (a pulling force into the helical winding guide device 52) to the lining member 12 and the connecting member 14.

[0072] On the other hand, the reaction force receiving roller 102 is rotatably provided via a bearing at a position facing the helical tube feed roller 100. The reaction force receiving roller 102 has a cylindrical metal base body and an outer periphery formed of a soft material such as urethane rubber and provided so as to cover the base body, and the outer periphery is a smooth cylindrical surface without any irregularities in the circumferential direction.

[0073] The reaction force receiving roller 102 rotates in accordance with the rotational drive of the helical tube feed roller 100 (rotation of the helical tube 202) and presses the inner surface of the helical tube 202 so as to sandwich the helical tube 202 between the helical tube feed roller 100 and the reaction force receiving roller 102. In addition, the reaction force receiving roller 102 not only receives the reaction force from the helical tube feed roller 100, but also functions as a shape correction roller that adjusts the shape of the helical tube 202 into a cylindrical shape by rotating while pressing the inner surface side of the helical tube 202.

[0074] 7 and 8, the leg 62 is made of a metal such as stainless steel, and includes a connecting frame 120 fixed to both sides of the frame member 72, and four support columns 122 provided so as to vertically penetrate the connecting frame 120. A male thread is formed on the outer circumferential surface of the support columns 122, which screws into a female thread provided on the connecting frame 120, and the installation height of the spiral winding guide device 52 can be adjusted by this screw mechanism.

[0075] As shown in FIG. 7, the shape correction rollers 124 are provided on the inner surface of the spiral winding guide device 52 at the 4 o'clock and 8 o'clock positions when the pipe making machine 50 is viewed from the existing pipe 200 to be rehabilitated. The shape correction rollers 124 have a cylindrical metal base and an outer periphery formed of a soft material such as urethane rubber and provided to cover the base, and the outer periphery is a smooth cylindrical surface without unevenness in the circumferential direction. The shape correction rollers 124 are provided to abut against the inner surface of the spiral pipe 202 and to extend in the axial direction of the frame member 72. The shape correction rollers 124 rotate following the rotation of the spiral pipe 202, and rotate while pressing the inner surface of the spiral pipe 202, thereby adjusting the shape of the spiral pipe 202 into a cylindrical shape.

[0076] In such a pipe making machine 50, the adjacent side edges of the lining member 12 wound in a spiral shape are connected to each other by the connecting member 14 to form the spiral pipe 202. When forming the spiral pipe 202 by the pipe making machine 50, first, the leading portion of the lining member 12 is set in the frame member 72 of the spiral winding guide device 52. At this time, the lining member 12 is fed into the frame member 72 through the lining member feeding device 54, and the lining member 12 is wound in a spiral shape for 1.65 revolutions (i.e., up to the fitting position of the fitting device 58). Then, in this state, the winding of the lining member 12 is temporarily stopped, and the lining member 12 is positioned. In other words, the circumferential length (diameter) and axial position of the lining member 12 are adjusted. This allows the production of the spiral pipe 202 to be started with the leading portion of the lining member 12 accurately positioned.

[0077] Next, the leading end of the connecting member 14 is set in the pipe making machine 50. At this time, the connecting member 14 is passed through the connecting member guide device 56 and sent to the fitting position of the fitting device 58 arranged in the frame member 72. Then, the hydraulic motor 74c of the lining member feed roller 74a, the hydraulic motors 86, 94 of the fitting device 58, and the hydraulic motor 106 of the whole rotation device 60 are driven. As a result, the lining member feed roller 74a, the fitting roller 80, the reaction force receiving roller 82, and the helical tube feed roller 100 are rotated, and the lining member 12 and the connecting member 14 are continuously fed into the pipe making machine 50, and the adjacent side edges of the lining member 12 are connected to each other by the connecting member 14, so that the helical tube 202 is successively made. The spiral pipe 202 produced in the pipe making machine 50 is pushed forward from the pipe making machine 50 in order starting from the produced portion, and is fed into the existing pipe 200 while rotating.

[0078] When manufacturing the helical pipe 202, the side edges of the base 20 of the lining member 12 are butted against each other, which makes it easy to position the lining member 12 and to manufacture the pipe. In addition, since the connecting member 14 is attached from the outer surface side of the helically wound lining member 12, it is easy to manufacture the helical pipe 202 even if it is a size corresponding to an existing pipe 200 with a medium diameter of 300 mm or more and less than 1000 mm (i.e., a relatively small diameter), which is difficult to manufacture using a pipe manufacturing machine that attaches a connecting member from the inner surface side of the lining member. Furthermore, since the helical pipe 202 is formed using two members, the lining member 12 and the connecting member 14, the side edges of the lining member 12 can be connected and fixed to each other by the connecting member 14 after the lining member 12 is wound around and positioned. Therefore, when forming the helical pipe 202, the circumferential lengths (diameters) of adjacent lining members 12 can be easily matched, and the helical pipe 202 can be formed with a uniform diameter over its entire axial length.

[0079] Furthermore, when manufacturing the helical pipe 202, the helical pipe 202 is rotated using the helical pipe feed roller 100 (i.e., hydraulic motor 106) of the whole rotation device 60 in addition to the driving force from the fitting roller 80 (i.e., hydraulic motor 86) of the fitting device 58, so that a sufficient driving force can be exerted and the formed helical pipe 202 can be pushed out into the existing pipe 200 while being properly rotated. Furthermore, a propulsive force is applied to the lining member 12 using the lining member feed roller 74a (i.e., hydraulic motor 74c) of the lining member feed device 54, so that the lining member 12 can be properly fed into the spiral winding guide device 52.

[0080] In this embodiment, the peripheral speed of the lining member feed roller 74a is set to a value greater than the peripheral speed of the fitting roller 80 so that the lining member 12 can be firmly pressed against the outer guide roller 70. In this way, by feeding the lining member 12 into the spiral winding guide device 52 at a speed faster than the fitting speed, the lining member 12 can be properly pressed against the outer guide roller 70, so that the cylindrical spiral tube 202 can be properly formed. The lining member feed roller 74a applies a propulsive force to the lining member 12 while causing slippage between the lining member 12 and the lining member feed roller 74a. The peripheral speed ratio between the fitting roller 80 and the lining member feed roller 74a is preferably, for example, 1:1.1 to 1.3. In this embodiment, the peripheral speed of the lining member feed roller 74a is set to 1.2 with the peripheral speed of the fitting roller 80 being 1.

[0081] Furthermore, in this embodiment, the driving force of the hydraulic motor 74c which rotates the lining member feed roller 74a is set to a value smaller than the driving force of the hydraulic motor 86 which rotates the fitting roller 80. This allows the lining member feed roller 74a to feed the lining member 12 into the spiral winding guide device 52 and appropriately press it against the outer guide roller 70 without affecting the rotation of the fitting roller 80 which has a large force. The driving force ratio between the hydraulic motor 86 and the hydraulic motor 74c is preferably, for example, 1:0.4 to 0.6, and in this embodiment, the target torque of the hydraulic motor 86 is set to 1 and the target torque of the hydraulic motor 106 is set to 0.5.

[0082] Furthermore, in this embodiment, in order to accurately synchronize the fitting roller 80 and the spiral tube feed roller 100, which are driven separately, hydraulic motors 86, 106 are used as the driving sources of the fitting roller 80 and the spiral tube feed roller 100, and the peripheral speed of the spiral tube feed roller 100 is set to a value smaller than that of the fitting roller 80. A hydraulic motor has a characteristic that it rotates at a slower peripheral speed than the set peripheral speed when the load is excessive. In addition, since the outer peripheral surface 80a of the fitting roller 80 and the outer peripheral surface 100a of the spiral tube feed roller 100 are subjected to anti-slip processing, the fitting roller 80 is synchronized with the spiral tube feed roller 100, which has a lower peripheral speed. The peripheral speed ratio of the fitting roller 80 and the spiral tube feed roller 100 is preferably 1:0.8 to 0.9, for example, and in this embodiment, the peripheral speed of the fitting roller 80 is set to 1, and the peripheral speed of the spiral tube feed roller 100 is set to 0.83. The peripheral speed of the reaction force receiving roller 82 which is rotationally driven by the hydraulic motor 94 is set to the same value as the peripheral speed of the fitting rollers 80 .

[0083] In this embodiment, the driving force (torque output by the motor) of the hydraulic motor 106 that rotates the helical tube feed roller 100 is set to a value greater than the driving force of the hydraulic motor 86 that rotates the fitting roller 80. This allows the fitting roller 80 to be more appropriately synchronized with the rotation of the helical tube feed roller 100, which has a greater force. The driving force ratio (target torque ratio) of the hydraulic motor 86 and the hydraulic motor 106 is preferably, for example, 1:1.5 to 2.5, and in this embodiment, the target torque of the hydraulic motor 86 is set to 1, and the target torque of the hydraulic motor 106 is set to 2.0.

[0084] Next, an example of a pipeline rehabilitation method for rehabilitating an existing pipe 200 with a helical pipe 202 manufactured by using the above-mentioned pipe manufacturing machine 50 will be described with reference to Figures 1, 24 and 25. In this embodiment, the existing pipe 200 between a manhole 210 on the starting side and a manhole 212 on the arrival side is to be rehabilitated.

[0085] As shown in Figures 1 and 24, when rehabilitating an existing pipe 200, first, a pipe making machine 50 is installed inside a manhole 210 on the starting side. At this time, the lower part of a spiral winding guide device 52 is fitted into the invert part of the manhole 210, and the pipe making machine 50 is supported and fixed by legs 62. In addition, a pipe rehabilitation member 10 including a lining member 12 and a connecting member 14 is installed on the ground near the manhole 210. The lining member 12 and the connecting member 14 may be prepared by individually winding them into rolls and then installed. The inside of the existing pipe 200 is cleaned in advance using a high-pressure washer or the like.

[0086] Next, the helical pipe 202 is constructed in the existing pipe 200. That is, the lining member 12 and the connecting member 14 are supplied from the ground to the pipe making machine 50 installed in the manhole 210, and the helical pipe 202 formed by using the pipe making machine 50 is fed sequentially from the manhole 210 on the starting side into the existing pipe 200. In the pipe making machine 50, the lining member 12 is wound in a helical shape so that the side edges of the base 20 of the lining member 12 are butted against each other, and the connecting member 14 is attached from the outer surface side of the lining member 12 to connect the adjacent side edges of the lining member 12, thereby producing the helical pipe 202. The helical pipe 202 produced in the pipe making machine 50 is pushed out of the pipe making machine 50 in order from the produced portion, and is fed sequentially into the existing pipe 200 toward the manhole 212 on the destination side while rotating.

[0087] After the spiral pipe 202 is installed over the entire length of the rehabilitation section of the existing pipe 200, a filler 204 is then injected between the inner surface of the existing pipe 200 and the outer surface of the spiral pipe 202. As the filler 204 hardens, a rehabilitation pipe 206 (composite pipe) in which the existing pipe 200 and the spiral pipe 202 are integrated is formed as shown in Fig. 25. Thereafter, the rehabilitation work of the existing pipe 200 is completed by appropriately carrying out tidying up work and the like.

[0088] As described above, according to this embodiment, the side edges of the lining members 12 are butted against each other when the helical pipe 202 is manufactured, so that the positioning of the lining member 12 can be easily performed. Also, since the connecting member 14 is attached to the lining member 12 from the outer surface side of the lining member 12, it is easy to manufacture a helical pipe 202 having a relatively small diameter. Furthermore, since the helical pipe 202 is formed using two members, the lining member 12 and the connecting member 14, it is easy to match the circumferential lengths of adjacent lining members 12, and it is possible to form a helical pipe 202 with a uniform diameter over the entire axial length. Therefore, the helical pipe 202 can be formed appropriately.

[0089] The specific configuration or shape of the above-mentioned pipe rehabilitation member 10 (lining member 12 and connecting member 14) may be modified as appropriate as long as it allows the connecting member 14 to be attached from the outer surface side of the lining member 12.

[0090] In addition, the specific configuration or shape of each part of the pipe making machine 50 can be changed as appropriate. For example, in the above-mentioned embodiment, the helical pipe feed roller 100 is configured with two rollers, and one turn of the lining members 12 arranged in the axial direction is pressed by the helical pipe feed roller 100 (see FIG. 23). In contrast, as shown in FIG. 26, the helical pipe feed roller 100 can be configured with four rollers, and three turns of the lining members 12 arranged in the axial direction can be pressed by the helical pipe feed roller 100. This improves the transmission performance of the driving force of the helical pipe feed roller 100 to the helical pipe 202, so that the helical pipe 202 can be pushed into the existing pipe 200 while rotating more appropriately.

[0091] In addition, the specific shape of the roller disposed on the side that becomes the outer surface of the spiral tube 202 can be appropriately changed according to the shapes of the outer surfaces of the lining member 12 and the connecting member 14. For example, as shown in FIG. 27, when a connecting member 14 that does not include a reinforcing member 18 is used, a fitting roller 80 having an annular protrusion 80b with a large protruding height is used, and the annular protrusion 80b is brought into contact with the other main surface 30b of the base 30 of the connecting member 14. In addition, as shown in FIG. 28, when a connecting member 14 having a T-shaped rib 42 on the other main surface 30b of the base 30 is used, a fitting roller 80 not having an annular protrusion 80b is used, and the outer circumferential surface 80a of the fitting roller 80 is brought into contact with the rib 42 of the connecting member 14.

[0092] Furthermore, in the above embodiment, a composite pipe (rehabilitation pipe 206) is formed by integrating the existing pipe 200 and the helical pipe 202 with the filler 204, but this is not limiting. The pipe making machine 50 according to the present invention can also form a self-supporting pipe that maintains its strength independently from the existing pipe 200.

[0093] Note that the specific values ​​of the dimensions and the like given above are merely examples and can be changed as appropriate according to the needs of the product specifications, etc. [Explanation of symbols]

[0094] 10...Pipe rehabilitation materials 12 ... Lining material 14 ...Connecting member 50…Pipe making machine 52 ... Spiral winding guide device 54 ...Lining material feed device 56 ...Connecting member guide device 58 ... Fitting device 60... Whole rotation device 70 ...Outer guide roller 72 ... Frame member 74a ... Lining member feed roller 74b ... reaction force receiving roller (second reaction force receiving roller) 74c ... Hydraulic motor (second hydraulic motor) 80 ...Mating roller 82 ... Reaction receiving roller (first reaction receiving roller) 84 ... Hydraulic motor (first hydraulic motor) 100... Spiral tube feed roller 102 ... reaction force receiving roller (third reaction force receiving roller) 106 ... Hydraulic motor (third hydraulic motor) 200 … Existing pipe 202 …Spiral tube 204…Filling material 206 … Rehabilitation pipe 210,212 ... Manhole

Claims

1. A pipe making machine that is installed in a manhole, forms a helical pipe by winding a lining member in a spiral shape and connecting adjacent side edges of the lining member with a connecting member, and sequentially feeds the formed helical pipe into an existing pipe, a spiral winding guide device that guides the lining member so as to wind it in a spiral shape; and a fitting device for butting adjacent side edges of the spirally wound lining member against each other and fitting the connecting member to the lining member from the outer surface side of the lining member, The fitting device includes: a fitting roller that rotates while pressing a connecting portion of the lining member including the connecting member from an outer surface side to fit the connecting portion and applies a rotational force to the helical tube; A first hydraulic motor that rotates the engaging roller; and A pipe making machine comprising a first reaction force receiving roller arranged at a position opposite the fitting roller and pressing the inner surface of the lining member so as to sandwich the connecting portion of the lining member between the fitting roller and the first reaction force receiving roller.

2. a connecting member guide device that guides the connecting member through the outside of the spiral winding guide device to the fitting device, 2. The pipe making machine according to claim 1, wherein the fitting roller rotates while pressing the connecting member from an outer surface side, thereby drawing the connecting member into the fitting device without providing a drive unit in the connecting member guide device.

3. The spiral winding guide device further includes a lining member feed device that feeds the lining member into the spiral winding guide device, The lining member feeding device is a lining member feed roller that rotates while pressing the inner surface or the outer surface of the lining member to impart a propulsive force to the lining member; A second hydraulic motor that rotates the lining member feed roller; and a second reaction force receiving roller provided at a position opposite to the lining member feed roller and pressing an outer surface side or an inner surface side of the lining member so as to sandwich the lining member between the lining member feed roller and the second reaction force receiving roller; 3. A pipe making machine according to claim 1, wherein the peripheral speed of said lining member feed roller is set to a value greater than the peripheral speed of said fitting roller.

4. The outer circumferential surface of the engaging roller is subjected to an anti-slip treatment, 4. The pipe making machine according to claim 3, wherein the driving force of the second hydraulic motor is set to a value smaller than the driving force of the first hydraulic motor.

5. Further, a whole rotating device is provided for rotating the formed helical tube, The whole rotating device is a helical tube feed roller that rotates while pressing the outer surface side of the helical tube to apply a rotational force to the helical tube; a third hydraulic motor for rotating the helical tube feed roller; and a third reaction force receiving roller that is provided at a position opposite to the helical tube feed roller and presses the inner surface side of the helical tube so as to sandwich the helical tube between the third reaction force receiving roller and the helical tube feed roller; 5. A pipe making machine according to claim 1, wherein the peripheral speed of the spiral pipe feed roller is set to a value smaller than the peripheral speed of the engagement roller.

6. The outer circumferential surface of the spiral tube feed roller is treated with an anti-slip treatment, 6. A pipe making machine according to claim 5, wherein the driving force of the third hydraulic motor is set to a value greater than the driving force of the first hydraulic motor.

7. A pipe making method for forming a helical pipe using the pipe making machine according to any one of claims 1 to 6, comprising the steps of: A pipe manufacturing method comprising butting adjacent side edges of a spirally wound lining member against each other and fitting a connecting member to the lining member from the outer surface side of the lining member to form the spiral pipe.

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