Pipe making machine and pipe making method

Abstract

To provide a pipe making machine capable of supplying properly a connection member to a mating device.SOLUTION: A pipe making machine 50, which is a push-type pipe making machine for forming a spiral pipe in a manhole by using a lining member and a connection member, and sending it into an existing pipe, includes a spiral winding guide device 52, a connection member guide device 56 and a mating device 58. The mating device includes a mating roller rotated by a hydraulic motor, and the mating roller is rotated, while pressing the connection member from the outer surface side, to thereby pull the connection member into the mating device without providing a drive part in the connection member guide device.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a pipe manufacturing machine and a pipe manufacturing method using the same, which are installed in a manhole, form a spiral pipe by winding a lining member spirally and connecting adjacent side edges of the lining member with a connecting member, and sequentially feed the formed spiral pipe into an existing pipe.

Background Art

[0002] An example of a conventional pipe manufacturing machine of this type is disclosed in Patent Document 1. The pipe manufacturing apparatus (pipe manufacturing machine) of Patent Document 1 includes a rigid mounting box that holds a gear mechanism and to which a drive motor for applying a rotational driving force to the gear mechanism is attached, and an outer surface roller and an inner surface roller that are arranged at a closing portion between a formed tubular body (spiral pipe) and a newly supplied belt-like member (lining member), sandwich and drive the belt-like member. At least the outer surface roller has an engaging roller portion (fitting device) that interlocks with the gear mechanism, a rigid surrounding box body that straddles the outer surface roller and is fixed to the mounting box, and a spiral annular frame structure that holds a plurality of rollers arranged in parallel, and is fixed via the surrounding box body, and is arranged substantially once around in a spiral shape along the newly supplied belt-like member to reach the first closing portion of the belt-like member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] There is known a pipe regeneration member that forms a spiral pipe by connecting adjacent side edges of a lining member with a connecting member. However, in the technique of Patent Document 1, the side edges of the lining member are directly connected, and no disclosure is made regarding the mode of supplying the connecting member to the fitting device provided in the pipe manufacturing machine.

[0005] Therefore, a main object of the present invention is to provide a novel pipe manufacturing machine and a pipe manufacturing method.

[0006] Another object of the present invention is to provide a pipe manufacturing machine and a pipe manufacturing method capable of appropriately supplying a connecting member to a fitting device.

Means for Solving the Problems

[0007] A first invention is a pipe manufacturing machine installed in a manhole, which forms a spiral pipe by spirally winding a lining member and connecting adjacent side edges of the lining member with a connecting member, and sequentially feeds the formed spiral pipe into an existing pipe. The pipe manufacturing machine includes a spiral winding guide device for guiding the lining member to be spirally wound, a fitting device for connecting adjacent side edges of the lining member spirally wound in the spiral winding guide device with a connecting member, and a connecting member guide device for guiding the connecting member to the fitting device. The fitting device includes a fitting roller that rotates while pressing the connecting portion of the lining member from the outer surface side to fit the connecting portion and applies a rotational force to the spiral pipe, a first hydraulic motor for rotationally driving the fitting roller, and a first reaction receiving roller provided at a position facing the fitting roller and pressing the inner surface side of the connecting portion of the lining member so as to sandwich the connecting portion of the lining member between the first reaction receiving roller and the fitting roller. The fitting roller draws the connecting member into the fitting device without providing a driving portion in the connecting member guide device by rotating while pressing the connecting member from the outer surface side. Look, the connecting member guide device is formed in a cylindrical shape , which is a pipe manufacturing machine.

[0008] In the first invention, the pipe manufacturing machine is a pushing type pipe manufacturing machine that sequentially feeds a spiral pipe formed in a manhole into an existing pipe using a lining member and a connecting member, and includes a spiral winding guide device, a fitting device, and a connecting member guide device. The spiral winding guide device is a device that guides the lining member to be wound spirally. The fitting device is a device for connecting adjacent side edges of the lining member wound spirally by a connecting member, and includes a fitting roller, a first hydraulic motor, and a first reaction receiving roller. The connecting member guide device is a device that guides the connecting member to the fitting device. and is formed in a cylindrical shape. Then, the fitting roller of the fitting device rotates while pressing the connecting member from the outer surface side, thereby drawing the connecting member into the fitting device.

[0009] According to the first invention, since the connecting member guide device is provided, the connecting member can be appropriately guided to the fitting device. Further, since the connecting member is drawn into the fitting device by using the rotational driving force of the fitting roller, the number of motors provided in the pipe manufacturing machine can be reduced. Furthermore, since the connecting member guide device is formed in a cylindrical shape, it is possible to appropriately prevent the connecting member from coming into contact with the water in the manhole and getting dirty, and also to prevent dust such as shavings from adhering to the connecting member. Therefore, the connecting member can be appropriately supplied to the fitting device.

[0010] The second invention is subordinate to the first invention, and the connecting member guide device is arranged so as to pass through the outside of the spiral winding guide device.

[0013] The 3 invention is subordinate to the first or the second invention, has a lining member feed roller that applies a propulsive force to the lining member, and further includes a lining member feed device that feeds the lining member to the spiral winding guide device, and feeds the lining member into the fitting device by the driving forces of both the fitting roller and the lining member feed roller.

[0014] The 3 invention, according to which, in addition to the rotational driving force of the fitting roller, the rotational driving force of the lining member feed roller is used to feed the lining member into the fitting device, so that the lining member can be appropriately supplied to the fitting device.

[0015] The 4The invention is a pipe manufacturing method for forming a spiral pipe using a pipe manufacturing machine according to any one of the first to 3 The pipe manufacturing method is a method of forming a spiral pipe while drawing a connecting member into a fitting device by a fitting roller without providing a driving unit to a connecting member guide device.

[0016] The 4 According to the invention of, it has the same operational effects as the first invention, and can appropriately supply a connecting member to the fitting device.

Effects of the Invention

[0017] According to this invention, since it is provided with a connecting member guide device, the connecting member can be appropriately guided to the fitting device. Further, since the rotational driving force of the fitting roller is used to draw the connecting member into the fitting device, the number of motors provided in the pipe manufacturing machine can be reduced. Therefore, a connecting member can be appropriately supplied to the fitting device.

[0018] The above object, other objects, features and advantages of this invention will become more apparent from the following detailed description of the embodiments with reference to the drawings.

Brief Description of the Drawings

[0019]

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Embodiments for Carrying Out the Invention

[0020] Referring to FIG. 1, a pipe manufacturing machine 50 according to an embodiment of the present invention is a pipe manufacturing machine of the original extrusion type that manufactures a spiral pipe 202 (lining pipe) for regenerating an existing pipe 200 in a manhole 210 and extrudes it into the existing pipe 200. As will be described in detail later, the pipe manufacturing machine 50 forms a spiral pipe 202 by winding a lining member 12 in a spiral shape and connecting adjacent side edges of the spirally wound lining member 12 with a connecting member 14, and sequentially feeds the formed spiral pipe 202 into the existing pipe 200.

[0021] Note that the pipe manufacturing machine 50 according to the present invention can be used for regenerating various existing pipes 200 made of reinforced concrete, synthetic resin, metal, etc. Further, this pipe manufacturing machine 50 is preferably used for regenerating a sewer pipe having a medium diameter of 300 mm or more and less than 1000 mm, which is difficult for an operator to enter and work inside, and among them, it is particularly preferably used for regenerating a sewer pipe having a diameter of 600 mm or more and less than 1000 mm. However, the pipe manufacturing machine 50 can also be used for regenerating an existing pipe 200 having a diameter of 1000 mm or more.

[0022] First, prior to a specific description of the pipe manufacturing machine 50, an example of a pipe regeneration member 10 used in this embodiment will be described. However, the specific configuration or shape of the pipe regeneration member 10 described below is merely an example and is not limited thereto.

[0023] As shown in FIG. 1, the pipe rehabilitation member 10 is a member for forming the spiral pipe 202, and includes a long strip-shaped lining member 12 and a long strip-shaped connecting member 14 that connects adjacent side edges of the spirally wound lining member 12. In this embodiment, the lining member 12 is provided with a fitting portion (first fitting portion 22) with the connecting member 14 on the outer surface side when spirally wound, and the connecting member 14 is fitted to the lining member 12 from the outer surface side of the spirally wound lining member 12. The outer diameter of the spiral pipe 202 formed using the pipe rehabilitation member 10 is set to be slightly smaller than the inner diameter of the existing pipe 200. Hereinafter, the configurations of the lining member 12 and the connecting member 14 will be specifically described.

[0024] As shown in FIGS. 2 and 3, the lining member 12 is a long member that is a main component of the spiral pipe 202, and includes a strip-shaped base 20 (lining base). One main surface 20a of the base 20 is a surface that constitutes the inner surface of the spiral pipe 202 and is a smooth surface. The width of the base 20 is, for example, 75 mm, and the thickness (wall thickness) of the base 20 is, for example, 2.5 mm.

[0025] On both sides of the other main surface 20b side of the base 20, that is, on the outer surface side when the lining member 12 is spirally wound, a first fitting portion 22 that is fitted with a second fitting portion 32 of the connecting member 14 described later is formed. The first fitting portion 22 includes a first engaging portion 24 formed on both side edges of the other main surface 20b of the base 20 and a third engaging portion 26 formed closer to the inside in the width direction of the base 20 than the first engaging portion 24. The first engaging portion 24 and the third engaging portion 26 are ridges extending in the longitudinal direction of the base 20, and locking pieces 24a and 26a that protrude toward the inside in the width direction of the base 20 are formed at the tip portions of the first engaging portion 24 and the third engaging portion 26, respectively.

[0026] In addition, a displacement absorbing portion 28 is formed at the center in the width direction of the base body 20. The displacement absorbing portion 28 is formed by loosening a part of the base body 20 in the width direction so as to protrude toward the other main surface 20b side. The displacement absorbing portion 28 has a pair of side wall portions 28a formed so as to expand in the width direction as they are separated from the one main surface 20a, and a connecting portion 28b that connects the tip portions of the side wall portions 28a. The protruding height of the displacement absorbing portion 28 from the other main surface 20b is, for example, 12 mm.

[0027] Such a lining member 12 is integrally formed, for example, by extrusion molding of a synthetic resin such as a polyethylene resin, a polypropylene resin, a nylon resin, a fluororesin, and a rigid vinyl chloride resin. The lining member 12 of this embodiment is formed of a high-density polyethylene resin, and the first fitting portion 22 including the first engaging portion 24 and the third engaging portion 26 and the displacement absorbing portion 28 are formed over the entire length in the longitudinal direction of the base body 20.

[0028] As shown in FIGS. 4 and 5, the connecting member 14 is a long member for connecting the side edge portions 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 spiral tube 202 in a state where the spiral tube 202 is formed using the lining member 12 and the connecting member 14.

[0029] 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 is fitted with the first fitting portion 22 of the lining member 12 is formed on 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 ridges extending in the longitudinal direction of the base body 30, and locking pieces 34a and 36a that protrude inward in the width direction of the base body 30 are formed at the tip portions of the second engaging portion 34 and the fourth engaging portion 36, respectively.

[0030] On one main surface 30a of the base body 30, a water stop portion 38 formed in a strip shape by an elastomer such as an elastomer is provided between the second engaging portion 34 and the fourth engaging portion 36, and between the second engaging portions 34. When the first fitting portion 22 of the lining member 12 and the second fitting portion 32 of the connecting member 14 are fitted together, this water stop portion 38 is sandwiched between one main surface 30a of the base body 30 and the tip portions of the first engaging portion 24 and the third engaging portion 26 of the lining member 12, and thus is sufficiently compressed (see FIG. 6). Thereby, the watertightness at the connecting portion between the side edge portions of the lining member 12 is ensured.

[0031] On the other hand, the other main surface 30b of the base body 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 edge portions of the other main surface 30b of the base body 30. Each of the pair of holding portions 40 is a ridge extending in the longitudinal direction of the base body 30, and a claw portion 40a protruding inward in the width direction of the base body 30 is formed at the tip of the pair of holding portions 40.

[0032] Such a connecting member body 16 is integrally formed, for example, by extrusion molding of a synthetic resin such as a rigid vinyl chloride resin, a nylon resin, a fluororesin, a polyethylene resin, and a polypropylene resin. The connecting member body 16 of this embodiment is formed of a rigid vinyl 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. Further, the water stop portion 38 is provided over the entire length in the longitudinal direction by co-extrusion with the connecting member body 16.

[0033] Then, on the other main surface 30b side of the base body 30 of the connecting member main body 16, a long reinforcing member 18 is provided over the entire longitudinal length of the connecting member main body 16 by being fitted between a pair of holding portions 40. In this embodiment, a strip-shaped metal member (for example, strip steel) is used as the reinforcing member 18. The reinforcing member 18 has a rectangular cross-sectional shape, its width is, for example, 30 mm, and its thickness is, for example, 2.5 mm. By the connecting member 14 including the reinforcing member 18, the rigidity of the connecting portion of the spiral pipe 202 (the portion where the side edges of the lining member 12 are connected by the connecting member 14) can be increased, and thus the rigidity of the spiral pipe 202 can be increased.

[0034] As shown in FIG. 6, when connecting adjacent side edges of the spirally wound lining member 12 by the connecting member 14, the side edges of the base body 20 are butted against each other so that one main surfaces 20a of the base bodies 20 of the lining member 12 are flush. Then, the connecting member 14 is pushed in from the outer surface side of the spirally wound lining member 12, and the second fitting portion 32 of the connecting member 14 is sequentially fitted in the longitudinal direction to the first fitting portion 22 of the lining member 12. Then, each of the first engaging portion 24 and the third engaging portion 26 of the first fitting portion 22 is locked by each of the second engaging portion 34 and the fourth engaging portion 36 of the second fitting portion 32, and the side edges of the lining member 12 are connected by the connecting member 14.

[0035] Next, with reference to FIGS. 7 - 23, the configuration of the pipe manufacturing machine 50 will be specifically described. As shown in FIGS. 7 and 8, the pipe manufacturing machine 50 includes a spiral winding guide device 52 for guiding the lining member 12 to be wound spirally. A lining member feeding device 54, a connecting member guide device 56, a fitting device 58, an overall rotating device 60, legs 62, etc. are attached to the spiral winding guide device 52.

[0036] At this time, when looking at the pipe manufacturing machine 50 in the axial direction of the existing pipe 200, it is preferable that the overall rotating device 60 is arranged at the top of the pipe manufacturing machine 50, and the lining member feeding device 54 and the fitting device 58 are preferably arranged separately on both sides of the upper half of the pipe manufacturing machine 50 with the overall rotating device 60 interposed therebetween. Thereby, the overall width of the pipe manufacturing machine 50 can be reduced, and the pipe manufacturing machine 50 can be suitably installed even in a narrow manhole 210. In this embodiment, the overall rotating device 60 is arranged at the top (that is, the 0 o'clock direction). Also, when looking at the pipe manufacturing machine 50 from the side of the existing pipe 200 to be rehabilitated, the lining member feeding device 54 is arranged at a circumferential position 60 degrees counterclockwise (that is, the 10 o'clock direction) from the overall rotating device 60, and the fitting device 58 is arranged at a circumferential position 45 degrees clockwise (that is, the 1:30 direction) from the overall rotating device 60.

[0037] As shown in FIGS. 9 to 11, the spiral guide device 52 includes a plurality of outer guide rollers 70 that guide the lining member 12 to be spirally wound, and a cylindrical frame member 72 that holds the plurality of outer guide rollers 70.

[0038] The frame member 72 is formed of a metal such as stainless steel, and has a cylindrical portion 72a, a first annular plate portion 72b that projects outward from the front edge of the cylindrical portion 72a, and a second annular plate portion 72c that projects inward from the rear edge of the cylindrical portion 72a. By using the cylindrical frame member 72, the plurality of outer guide rollers 70 can be appropriately held in a spiral arrangement as described later.

[0039] Each of the plurality of outer guide rollers 70 includes a pair of rollers provided at intervals in the front-rear direction (i.e., the width direction of the lining member 12), and is rotatably provided via a bearing such as a deep groove ball bearing with respect to a rotating shaft attached to the inner surface side of the cylindrical portion 72a. The pair of rollers is made of metal, and its outer peripheral surface is a smooth cylindrical surface without irregularities in the circumferential direction. Further, the plurality of outer guide rollers 70 are provided so as to be arranged in a spiral 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 plurality of outer guide rollers 70 are preferably arranged so as to extend over at least two turns (720 degrees) of the lining member 12 wound in a spiral. In this embodiment, they are arranged so as to extend over 2.75 turns (990 degrees) of the lining member 12.

[0040] The front-rear direction interval W1 between the outer guide rollers 70 is set to the same size as the width of the base 20 of the lining member 12 so that the side edges of the base 20 of the lining member 12 wound in a spiral can abut against each other. Further, the front-rear direction interval W2 between the pair of rollers included in each outer guide roller 70 is set to an interval such that each of the pair of rollers can enter between the first fitting portion 22 of the lining member 12 (after the connecting member 14 is fitted, the outer surface of the connecting member 14) and the displacement absorbing portion 28 and abut against the other main surface 20b of the base 20. However, at a position where it interferes with the fitting device 58 or the overall rotation device 60, one of the pair of rollers included in the outer guide roller 70 is omitted, or the circumferential direction interval between the outer guide rollers 70 is changed.

[0041] Such a plurality of outer guide rollers 70 guide the lining member 12 so as to be spirally wound while abutting against the side edges of adjacent bases 20. By arranging the outer guide rollers 70 in a spiral pattern, the lining member 12 can be properly guided in a spiral shape, and each of the pair of rollers constituting the outer guide roller 70 enters between the first fitting portion 22 and the displacement absorbing portion 28 of the lining member 12, thereby automatically positioning the lining member 12 in the axial direction of the spiral tube 202. In particular, by abutting the side edges of adjacent bases 20 against each other, the positioning of the lining member 12 in the axial direction of the spiral tube 202 can be more appropriately executed.

[0042] Further, the plurality of outer guide rollers 70 define the outer diameter of the spiral tube 202 by contacting the other main surface 20b of the base 20 of the lining member 12 wound in a spiral shape (that is, the outer surface of the lining member 12). As a result, the spiral tube 202 can be formed to have a constant size based on the outer diameter. Furthermore, each of the plurality of outer guide rollers 70 pushes the formed spiral tube 202 forward (toward the existing pipe 200 side) by the front side surface of the pair of rollers contacting the rear side surface of the first fitting portion 22 of the lining member 12 or the connecting member 14. By each of the plurality of outer guide rollers 70 pushing the spiral tube 202, the pushing force can be increased, and the spiral tube 202 can be appropriately pushed into the existing pipe 200.

[0043] Also, as can be clearly seen from FIG. 11, in the cylindrical portion 72a of the frame member 72, openings for mounting a lining member feeding device 54, a connecting member guiding device 56, a fitting device 58, and an overall rotating device 60 are formed in order from the upstream side in the feeding direction of the lining member 12. Specifically, a first opening 72d into which the lining member feeding device 54 is fitted is formed on the upstream side of the outer guide roller 70 that is arranged most upstream at the 10 o'clock position when viewing the pipe making machine 50 from the existing pipe 200 side. This first opening 72d serves as the inlet of the lining member 12 into the spiral winding guide device 52. Also, a second opening 72e into which the downstream end of the connecting member guiding device 56 is fitted is formed between the outer guide rollers 70 that are arranged approximately half a turn and one and a half turns after the most upstream side at the 2:30 position when viewing the pipe making machine 50 from the existing pipe 200 side. This second opening 72e serves as the inlet of the connecting member 14 into the spiral winding guide device 52. Further, a third opening 72f into which the fitting device 58 is fitted is formed on the downstream side of the second opening 72e at the 1:30 position when viewing the pipe making machine 50 from the existing pipe 200 side. Also, a fourth opening 72g into which the overall rotating device 60 is fitted is formed on the downstream side of the third opening 72f at the 0 o'clock position when viewing the pipe making machine 50 from the existing pipe 200 side.

[0044] As shown in FIGS. 12 - 16, the lining member feeding 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 feeding device main body 74, four - direction guide rollers 76, a buckling prevention guide roller group 78, etc. The lining member feeding 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.

[0045] The feed device body 74 includes a pair of rollers provided so as to sandwich the lining member 12 in the thickness direction, namely, the lining member feed roller 74a and the reaction force receiving roller 74b. The lining member feed roller 74a is arranged on the inner surface side of the lining member 12, and the reaction force receiving roller 74b is arranged on the outer surface side of the lining member 12.

[0046] The lining member feed roller 74a is rotatably provided via a bearing so as to extend in the front-rear direction. The lining member feed roller 74a has a cylindrical base made of metal and an outer peripheral portion (surface layer) formed of a soft material such as urethane rubber and provided so as to cover the base, and its outer peripheral surface is a smooth cylindrical surface without irregularities in the circumferential direction. A hydraulic motor 74c is connected to the lining member feed roller 74a. The lining member feed roller 74a is rotationally driven by receiving a driving force from the hydraulic motor 74c, and rotates while pressing the inner surface side of the lining member 12 (specifically, one main surface 20a of the base 20), thereby applying a propulsive force to the lining member 12 toward the spiral winding guide device 52.

[0047] On one hand, the reaction force receiving roller 74b is rotatably provided 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 peripheral surface is formed into a shape conforming to the shape on the outer surface side of the lining member 12. In this embodiment, since the displacement absorbing portion 28 protrudes more than the first fitting portion 22 on the outer surface side of the lining member 12, an annular groove 74d into which the tip of the displacement absorbing portion 28 can be fitted is formed at the axial center of the outer peripheral surface of the reaction force receiving roller 74b. The reaction force receiving roller 74b rotates passively while pressing the outer surface side of the lining member 12 (specifically, the tip portions of the first fitting portion 22 and the displacement absorbing portion 28) as the lining member feed roller 74a rotates (to convey the lining member 12). Further, by fitting the tip of the displacement absorbing portion 28 into the annular groove 74d, the movement of the lining member 12 in the width direction is restricted. Note that the arrangement of the lining member feed roller 74a and the reaction force receiving roller 74b may be reversed so that the lining member feed roller 74a, which is the driving roller, presses the outer surface side of the lining member 12.

[0048] The four-direction guide roller 76 is provided upstream of the feeder body 74 (lining member feed roller 74a) in the feeding direction of the lining member 12. The four-direction 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-direction guide roller 76 is made of metal and includes two pairs of thickness-direction regulating rollers 76a provided at intervals in the feeding direction of the lining member 12 and a pair of width-direction regulating rollers 76b provided between these pairs of rollers 76a. Such a four-direction guide roller 76 guides the lining member 12 between the lining member feed roller 74a and the reaction force receiving roller 74b while restricting the movement of the lining member 12 in the thickness direction and the width direction. Therefore, by providing the lining member feeder 54 with the four-direction guide roller 76, the lining member 12 can be smoothly guided between the lining member feed roller 74a and the reaction force receiving roller 74b.

[0049] The buckling prevention guide roller group 78 is provided on the downstream side of the feeder body 74 (lining member feed roller 74a) of the lining member 12 in the feeding direction. The buckling prevention guide roller group 78 includes a plurality of roller pairs 78a rotatably provided so as 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 end portions in the width direction of the lining member 12. That is, the roller pair 78a includes four rollers 78b provided so as to sandwich both end portions in the width direction of the lining member 12 from the outer surface side and the inner surface side. And these plurality of roller pairs 78a are linearly arranged along the feeding direction of the lining member 12 so as to connect between the lining member feed roller 74a and the outer guide roller 70 arranged on the most upstream side of the spiral winding guide device 52. Further, a rectangular frame-shaped regulating frame 78c is provided at the downstream end portion of the buckling prevention guide roller group 78 so as to surround the roller pair 78a. Such a buckling prevention guide roller group 78 guides the lining member 12 into the spiral winding guide device 52 while restricting the movement of the lining member 12 in the thickness direction by the plurality of roller pairs 78a. Further, the movement of the lining member 12 in the width direction is restricted by the regulating frame 78c. Therefore, by providing the lining member feeder 54 with the buckling prevention guide roller group 78, it is possible to smoothly guide the lining member 12 into the spiral winding guide device 52 while preventing the buckling of the lining member 12.

[0050] As shown in Fig. 17, the connecting member guiding 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 by a metal such as stainless steel. When looking at the pipe making machine 50 from the side of the existing pipe 200 to be recycled, the connecting member guiding device 56 has an inlet portion 56a (upstream end portion) for receiving the connecting member 14 provided in the 10:30 direction. Then, the connecting member guiding device 56 extends through the outer side of the lower half of the cylindrical portion 72a of the frame member 72 provided in the spiral guide device 52 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. Further, on the upstream side of the outlet portion 56b, a bulging portion 56c that bulges toward the radially outer side of the frame member 72 is formed, and the outlet portion 56b extends linearly along the tangential direction at the fitting position of the lining member 12.

[0051] By providing such a connecting member guiding 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 appropriately connected by the connecting member 14 in the fitting device 58. Further, by forming the connecting member guiding device 56 in a cylindrical shape, it is possible to prevent the connecting member 14 from coming into contact with the water in the manhole 210 and getting dirty, and to prevent dust such as shaving chips from adhering to the connecting member 14. In particular, if foreign matter adheres to the water stop portion 38 provided on the connecting member 14, there is a risk that the water stop function of the water stop portion 38 will not be properly exerted, but this is prevented by the cylindrical connecting member guiding device 56. However, the connecting member guiding device 56 does not necessarily have to be formed in a cylindrical shape, and it can also be formed in a groove shape (i.e., a cross-sectional "C" shape) with the surface on the side of the spiral guide device 52 opened.

[0052] As shown in Figs. 18 - 21, the fitting device 58 is a device that connects adjacent side edges of the spirally wound lining member 12. In this embodiment, the fitting device 58 abuts adjacent side edges of the lining member 12 and fits the connecting member 14 from the outer surface side of the lining member 12 to connect adjacent side edges of the lining member 12.

[0053] Specifically, the fitting device 58 includes a pair of rollers, namely, a fitting roller 80 and a reaction force receiving roller 82, which are provided so as 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 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 guide device 52, and a part of the fitting roller 80 protrudes into the cylindrical portion 72a of the frame member 72.

[0054] The axial directions of the fitting roller 80 and the reaction force receiving roller 82 are the same direction (parallel) as the axial direction of the outer guide roller 70. Further, the fitting roller 80 and the reaction force receiving roller 82 are provided at axial positions corresponding to positions between 0.65 turns (225 degrees) and 1.65 turns (585 degrees) after the lining member 12 is conveyed into the frame member 72 of the spiral guide device 52. Also, one of the outer guide rollers 70 is arranged on the rear side of the circumferential position where the fitting roller 80 is arranged. This outer guide roller 70 abuts on the outer surface of the newly fitted lining member 12. By arranging the outer guide roller 70 side by side at 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 enhanced.

[0055] The fitting roller 80 is rotatably provided via a bearing so as to abut on the outer surface side of the connecting member 14. The fitting roller 80 is made of metal, and its outer peripheral surface 80a is formed in a shape conforming to the shape of the outer surface side of the connecting member 14. In this embodiment, since the outer surface side of the connecting member 14 has a shape in which a pair of holding portions 40 on both sides in the width direction protrude more than the reinforcing member 18 at the center in the width direction, an annular protrusion 80b that can be fitted between the pair of holding portions 40 and abut on the outer surface of the reinforcing member 18 is formed at the axial center of the outer peripheral surface 80a of the fitting roller 80.

[0056] Further, the outer peripheral surface 80a of the fitting roller 80 is subjected to an anti-slip process. In this embodiment, the outer peripheral surface 80a of the fitting roller 80 is formed in a rough surface state with a plurality of fine irregularities formed thereon. By this anti-slip process, the rotational driving force of the fitting roller 80 is appropriately transmitted to the connecting member 14 (and thus to the spiral tube 202) without slippage occurring between the fitting roller 80 and the connecting member 14. However, this anti-slip process 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 body 16. Also, when the fitting roller 80 is formed of a material that does not slip with the connecting member 14, it is not always necessary to apply an anti-slip process to the outer peripheral surface 80a of the fitting roller 80.

[0057] Also, a hydraulic motor 86 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 receiving roller 82 by a compression coil spring 90, whereby the fitting roller 80 can press the outer surface side of the connecting member 14 with a predetermined pressing force (for example, 100 kgf). Also, by changing the pushing-in amount of the bolt 92, it is possible to change the pressing force of the fitting roller 80 against the connecting member 14.

[0058] Such a fitting roller 80 is rotationally driven 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 provided in the connecting member 14) from the outer surface side. By doing so, the second fitting portion 32 of the connecting member 14 is fitted to the first fitting portion 22 of the lining member 12, and a rotational force is applied to the formed spiral tube 202. Further, the fitting roller 80 rotates while pressing the connecting member 14 from the outer surface side, and sequentially draws the connecting member 14 into the fitting device 58 without providing a driving portion in the connecting member guide device 56. Thereby, the number of motors provided in the pipe making machine 50 can be reduced. Furthermore, the fitting roller 80 rotates while pressing the connecting member 14 from the outer surface side, and additionally gives an advancing force to draw the lining member 12 into the spiral winding guide device 52 to the lining member 12. That is, in this embodiment, while feeding the lining member 12 by the driving forces of both the fitting device 58 and the lining member feeding device 54, the connecting member 14 is sequentially fitted to the adjacent side edge portions of the lining member 12.

[0059] On the other hand, the reaction force receiving roller 82 is rotatably provided 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 peripheral portion formed of a soft material such as urethane rubber and provided so as to cover the base body, and its outer peripheral surface is a smooth cylindrical surface without unevenness in the circumferential direction. A hydraulic motor 94 is connected to the reaction force receiving roller 82. The reaction force receiving roller 82 is rotationally driven by receiving a driving force from the hydraulic motor 94, and presses the inner surface side of the connecting portion of the lining member 12 (specifically, the position straddling one main surface 20a of the adjacent base body 20) so as to sandwich the connecting portion of the lining member 12 between the reaction force receiving roller 82 and the fitting roller 80. Further, 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 aligns the shape of the spiral tube 202 into a cylindrical shape by rotating while pressing the inner surface 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, and additionally gives an advancing force to draw the lining member 12 into the spiral winding guide device 52 to the lining member 12.

[0060] As shown in FIGS. 22 and 23, the overall rotation device 60 is a device for rotating the entire formed spiral tube 202. The overall rotation device 60 includes a pair of rollers, that is, a spiral tube feed roller 100 and a reaction force receiving roller 102, which are provided so as to sandwich the spiral tube 202 from the outer surface side and the inner surface side. The overall rotation device 60 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 spiral tube feed roller 100 is fitted into the fourth opening 72g of the frame member 72 of the spiral winding guide device 52, and a part (lower part) of the spiral tube feed roller 100 protrudes into the cylindrical part 72a of the frame member 72.

[0061] The axial directions of the spiral tube feed roller 100 and the reaction force receiving roller 102 are the same direction (parallel) as the axial direction of the outer guide roller 70. Further, the spiral tube feed roller 100 is provided at an axial position corresponding to a position of 1.75 turns (630 degrees) after the lining member 12 is conveyed into the frame member 72 of the spiral winding guide device 52. Further, one of the outer guide rollers 70 is arranged on the rear side in the circumferential direction where the spiral tube feed roller 100 is arranged. This outer guide roller 70 abuts on the outer surface of the newly fitted lining member 12. By arranging the outer guide roller 70 side by side at the same circumferential position as the spiral tube feed roller 100, the stability of power transmission to the spiral tube 202 can be enhanced.

[0062] On the other hand, the reaction force receiving roller 102 is provided so as to straddle the positions of 0.75 turns (270 degrees), 1.75 turns (630 degrees), and 2.75 turns (990 degrees) after the lining member 12 is conveyed into the frame member 72 of the spiral winding guide device 52, that is, so as to straddle the lining member 12 for three turns.

[0063] The spiral tube feed roller 100 is rotatably provided via a bearing so as to contact the outer surface of the spiral tube 202 (specifically, the other main surface 20b of the base 20 of the lining member 12). In this embodiment, the spiral tube feed roller 100 includes two rollers provided at intervals in the front-rear direction. Further, the spiral tube feed roller 100 is made of metal, and its outer peripheral surface 100a is provided with an anti-slip process. In this embodiment, a plurality of ridges extending along the axial direction and arranged at predetermined intervals in the circumferential direction are formed on the outer peripheral surface 100a of the spiral tube feed roller 100. By this anti-slip process, the rotational driving force of the spiral tube feed roller 100 is appropriately transmitted to the lining member 12 (and thus the spiral tube 202) without slipping occurring between the spiral tube feed roller 100 and the lining member 12. However, when the spiral tube feed roller 100 is formed of a material that does not slip with the lining member 12, it is not always necessary to perform an anti-slip process on the outer peripheral surface 100a of the spiral tube feed roller 100.

[0064] Also, a hydraulic motor 106 is connected to the spiral tube feed roller 100 via a gear portion 104. The spiral tube feed roller 100, the gear portion 104, and the hydraulic motor 106 are integrally held by a support frame 110 that is rotatable in the vertical direction via a hinge portion 108. This support frame 110 is biased toward the reaction force receiving roller 102 by a compression coil spring 112, whereby the spiral tube feed roller 100 can press the outer surface of the lining member 12 with a predetermined pressing force. Also, it is possible to change the pressing force of the spiral tube feed roller 100 against the lining member 12 by changing the pushing-in amount of the bolt 114.

[0065] Such a spiral tube feed roller 100 is rotationally driven by receiving a driving force from the hydraulic motor 106, and applies a rotational force to the spiral tube 202 by rotating while pressing the spiral tube 202 from the outer surface side. Further, the spiral tube feed roller 100 applies an auxiliary propulsive force (a pulling force into the spiral winding guide device 52) to the lining member 12 and the connecting member 14 by rotating while pressing the spiral tube 202 from the outer surface side.

[0066] On the one hand, the reaction force receiving roller 102 is rotatably provided via a bearing at a position facing the spiral tube feeding roller 100. The reaction force receiving roller 102 has a cylindrical base made of metal and an outer peripheral portion formed of a soft material such as urethane rubber and provided to cover the base, and its outer peripheral surface is a smooth cylindrical surface without irregularities in the circumferential direction.

[0067] The reaction force receiving roller 102 is driven to rotate passively along with the rotational drive of the spiral tube feeding roller 100 (rotation of the spiral tube 202), and presses the inner surface of the spiral tube 202 so as to sandwich the spiral tube 202 between the reaction force receiving roller 102 and the spiral tube feeding roller 100. Further, this reaction force receiving roller 102 not only receives the reaction force from the spiral tube feeding roller 100, but also functions as a shape correction roller that corrects the shape of the spiral tube 202 into a cylindrical shape by rotating while pressing the inner surface side of the spiral tube 202.

[0068] Returning to FIGS. 7 and 8, the leg portion 62 is made of a metal such as stainless steel, and includes a connecting frame 120 fixed to both side portions of the frame member 72 and four support column portions 122 provided so as to penetrate the connecting frame 120 in the vertical direction. On the outer peripheral surface of the support column portion 122, a male screw portion that engages with a female screw portion provided on the connecting frame 120 is formed, and the installation height of the spiral winding guide device 52 can be adjusted by this screw mechanism.

[0069] Also, as shown in FIG. 7, on the inner surface side of the spiral winding guide device 52, shape correction rollers 124 are provided at positions in the 4 o'clock direction and the 8 o'clock direction when looking at the pipe making machine 50 from the side of the existing pipe 200 to be regenerated. The shape correction roller 124 has a cylindrical base made of metal and an outer peripheral portion formed of a soft material such as urethane rubber and provided to cover the base, and its outer peripheral surface is a smooth cylindrical surface without irregularities in the circumferential direction. This shape correction roller 124 is provided so as to contact the inner surface of the spiral tube 202 and extend in the axial direction of the frame member 72. Then, the shape correction roller 124 is driven to rotate passively along with the rotation of the spiral tube 202, and corrects the shape of the spiral tube 202 into a cylindrical shape by rotating while pressing the inner surface side of the spiral tube 202.

[0070] In such a pipe manufacturing machine 50, the adjacent side edges of the spirally wound lining member 12 are connected by the connecting member 14 to form the spiral pipe 202. When forming the spiral pipe 202 by the pipe manufacturing machine 50, first, the leading portion of the lining member 12 is set within 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 spirally for 1.65 turns (that is, up to the fitting position of the fitting device 58). And in this state, the winding of the lining member 12 is temporarily stopped, and the lining member 12 is positioned. That is, the circumference (diameter) and the axial position of the lining member 12 are adjusted. Thereby, the pipe manufacturing of the spiral pipe 202 can be started with the leading portion of the lining member 12 being accurately positioned.

[0071] Next, the leading portion of the connecting member 14 is set in the pipe manufacturing machine 50. At this time, the connecting member 14 is fed through the connecting member guide device 56 to the fitting position of the fitting device 58 arranged within the frame member 72. Thereafter, the hydraulic motor 74c of the lining member feeding roller 74a, the hydraulic motors 86, 94 of the fitting device 58, and the hydraulic motor 106 of the overall rotating device 60 are driven. Thereby, the lining member feeding roller 74a, the fitting roller 80, the reaction receiving roller 82, and the spiral pipe feeding roller 100 are rotationally driven, and the lining member 12 and the connecting member 14 are continuously supplied into the pipe manufacturing machine 50. At the same time, the adjacent side edges of the lining member 12 are connected by the connecting member 14, and the spiral pipe 202 is sequentially manufactured. And the spiral pipe 202 manufactured by the pipe manufacturing machine 50 is pushed forward from the pipe manufacturing machine 50 in order from the manufactured portion and fed into the existing pipe 200 while rotating.

[0072] When manufacturing the spiral pipe 202, since the side edges of the base 20 of the lining member 12 are butted against each other, the positioning of the lining member 12 becomes easy and the pipe manufacturing is facilitated. Also, since the connecting member 14 is attached from the outer surface side of the lining member 12 wound spirally, even for a spiral pipe 202 with a relatively small diameter (i.e., a medium-sized existing pipe 200 with a diameter of more than 300 mm and less than 1000 mm) for which pipe manufacturing is difficult with a pipe manufacturing machine that attaches the connecting member from the inner surface side of the lining member, the pipe manufacturing is facilitated. Further, since the spiral pipe 202 is formed using two members, namely the lining member 12 and the connecting member 14, after the lining member 12 is rotated and positioned, the side edges of the lining member 12 can be connected and fixed by the connecting member 14. Therefore, when forming the spiral pipe 202, it is easy to match the circumferences (diameters) of adjacent lining members 12, and a spiral pipe 202 with a uniform diameter over the entire axial length can be formed.

[0073] Also, when manufacturing the spiral pipe 202, the connecting member 14 can be smoothly guided to the fitting device 58 by the connecting member guide device 56. At this time, it is possible to prevent the connecting member 14 from coming into contact with the water in the manhole 210 and getting dirty, and also to prevent dust such as shaving scraps from adhering to the connecting member 14 by the connecting member guide device 56 formed in a cylindrical shape.

[0074] Furthermore, in addition to the driving force by the fitting roller 80 (i.e., the hydraulic motor 86) of the fitting device 58, the spiral pipe 202 is rotated using the spiral pipe feed roller 100 (i.e., the hydraulic motor 106) of the overall rotation device 60. Therefore, the formed spiral pipe 202 can be extruded into the existing pipe 200 while being appropriately rotated.

[0075] Furthermore, in addition to the driving force by the fitting roller 80, a propulsion force is applied to the lining member 12 using the lining member feed roller 74a (that is, the hydraulic motor 74c). Therefore, the lining member 12 can be appropriately fed into the spiral guide device 52. At this time, the lining member 12 is smoothly guided between the lining member feed roller 74a and the reaction force receiving roller 74b by the four-direction guide roller 76. Also, buckling of the lining member 12 to which a propulsion force is applied by the lining member feed roller 74a is prevented by the anti-buckling guide roller group 78.

[0076] Also, in this embodiment, the peripheral speed of the lining member feed roller 74a is set to a value larger 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 guide device 52 at a speed faster than the fitting speed, the lining member 12 can be appropriately pressed against the outer guide roller 70, and thus the cylindrical spiral tube 202 can be appropriately formed. Note that the lining member feed roller 74a applies a propulsion force to the lining member 12 while slipping between them. The peripheral speed ratio of 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.

[0077] Furthermore, in this embodiment, the driving force of the hydraulic motor 74c that rotationally drives the lining member feed roller 74a is set to a value smaller than the driving force of the hydraulic motor 86 that rotationally drives the fitting roller 80. Thereby, the lining member feed roller 74a can feed the lining member 12 into the spiral guide device 52 and appropriately press it against the outer guide roller 70 without affecting the rotation of the fitting roller 80 with a large force. The driving force ratio of the hydraulic motor 86 and the hydraulic motor 74c is preferably, for example, 1:0.4 to 0.6. In this embodiment, the target torque of the hydraulic motor 106 is set to 0.5 with the target torque of the hydraulic motor 86 being 1.

[0078] Furthermore, in this embodiment, in order to accurately synchronize the individually driven fitting roller 80 and the spiral tube feeding roller 100, hydraulic motors 86 and 106 are employed as the drive sources for the fitting roller 80 and the spiral tube feeding roller 100, and the peripheral speed of the spiral tube feeding roller 100 is set to a value smaller than the peripheral speed of the fitting roller 80. The hydraulic motor has the characteristic that when the load becomes excessive, it decelerates and rotates slower than the set peripheral speed. Also, since the outer peripheral surface 80a of the fitting roller 80 and the outer peripheral surface 100a of the spiral tube feeding roller 100 are provided with anti-slip processing, the fitting roller 80 will synchronize with the spiral tube feeding roller 100 having a lower peripheral speed. The peripheral speed ratio between the fitting roller 80 and the spiral tube feeding roller 100 is preferably, for example, 1:0.8 to 0.9. In this embodiment, with the peripheral speed of the fitting roller 80 being set to 1, the peripheral speed of the spiral tube feeding roller 100 is set to 0.83. Incidentally, the peripheral speed of the reaction force receiving roller 82 that is rotationally driven by the hydraulic motor 94 is set to the same value as the peripheral speed of the fitting roller 80.

[0079] Also, in this embodiment, the driving force (torque output by the motor) of the hydraulic motor 106 that rotationally drives the spiral tube feeding roller 100 is set to a value larger than the driving force of the hydraulic motor 86 that rotationally drives the fitting roller 80. Thereby, the fitting roller 80 can be more appropriately synchronized with the rotation of the spiral tube feeding roller 100 having a greater force. The driving force ratio (target torque ratio) between the hydraulic motor 86 and the hydraulic motor 106 is preferably, for example, 1:1.5 to 2.5. In this embodiment, with the target torque of the hydraulic motor 86 being set to 1, the target torque of the hydraulic motor 106 is set to 2.0.

[0080] Subsequently, with reference to FIGS. 1, 24, and 25, an example of a pipeline rehabilitation method for rehabilitating an existing pipe 200 with a spiral pipe 202 manufactured using the pipe manufacturing machine 50 as described above will be described. In this embodiment, it is assumed that the existing pipe 200 between the manhole 210 on the starting side and the manhole 212 on the reaching side is to be rehabilitated.

[0081] As shown in FIGS. 1 and 24, when rehabilitating the existing pipe 200, first, install the pipe manufacturing machine 50 in the manhole 210 on the starting side. At this time, fit the lower part of the spiral winding guide device 52 into the invert part of the manhole 210, and support and fix the pipe manufacturing machine 50 by the leg part 62. Also, install the pipe rehabilitation member 10 including the lining member 12 and the connecting member 14 on the ground near the manhole 210. The lining member 12 and the connecting member 14 may be prepared and installed by winding them individually in a roll shape. In addition, the inside of the existing pipe 200 should be pre-cleaned using a high-pressure washer or the like.

[0082] Next, construct the spiral pipe 202 inside the existing pipe 200. That is, supply the lining member 12 and the connecting member 14 from the ground into the pipe manufacturing machine 50 installed in the manhole 210, and sequentially feed the spiral pipe 202 formed using this pipe manufacturing machine 50 from the manhole 210 on the starting side into the existing pipe 200. In the pipe manufacturing machine 50, the lining member 12 is wound spirally so that the side edges of the base 20 of the lining member 12 abut each other, and the connecting member 14 is attached from the outer surface side of the lining member 12 to connect the adjacent side edge portions of the lining member 12, thereby manufacturing the spiral pipe 202. The spiral pipe 202 manufactured by the pipe manufacturing machine 50 is sequentially pushed out from the pipe manufacturing machine 50 in order from the manufactured part and is sequentially fed into the existing pipe 200 while rotating toward the manhole 212 on the arrival side.

[0083] When the spiral pipe 202 is constructed over the entire length of the rehabilitation section of the existing pipe 200, subsequently, inject the filling material 204 between the inner surface of the existing pipe 200 and the outer surface of the spiral pipe 202. By solidifying the filling material 204, a rehabilitated pipe 206 (composite pipe) in which the existing pipe 200 and the spiral pipe 202 are integrated, as shown in FIG. 25, is formed. Thereafter, by appropriately performing cleanup work and the like, the rehabilitation work of the existing pipe 200 is completed.

[0084] As described above, according to this embodiment, since the connecting member guiding device 56 is provided, the connecting member 14 can be properly guided to the fitting device 58. Further, since the connecting member 14 is drawn into the fitting device 58 using the rotational driving force of the fitting roller 80, the number of motors provided in the pipe manufacturing machine 50 can be reduced. Therefore, the connecting member 14 can be properly supplied to the fitting device 58.

[0085] Also, according to this embodiment, since the connecting member guiding device 56 is formed in a cylindrical shape, it is possible to prevent the connecting member 14 from coming into contact with the water in the manhole 210 and getting dirty, and to prevent dust such as shaving scraps from adhering to the connecting member 14.

[0086] Note that the specific configuration or shape of the pipe rehabilitation member 10 (lining member 12 and connecting member 14) described above may be any mode in which the connecting member 14 can be attached from the outer surface side of the lining member 12, and can be changed as appropriate.

[0087] Also, the specific configuration or shape of each part of the pipe manufacturing machine 50 can be changed as appropriate. For example, in the above-described embodiment, the spiral pipe feeding roller 100 is composed of two rollers, and one turn of the lining member 12 among the lining members 12 arranged in the axial direction is pressed by the spiral pipe feeding roller 100 (see FIG. 23). On the other hand, as shown in FIG. 26, the spiral pipe feeding roller 100 can be composed of four rollers, and three turns of the lining member 12 among the lining members 12 arranged in the axial direction can be pressed by the spiral pipe feeding roller 100. As a result, the transmission performance of the driving force of the spiral pipe feeding roller 100 with respect to the spiral pipe 202 is improved, so that the spiral pipe 202 can be more appropriately rotated and pushed into the existing pipe 200.

[0088] Further, the specific shape of the roller disposed on the outer surface side of the spiral pipe 202 can be appropriately changed according to the shape of the outer surface side of the lining member 12 and the connecting member 14. For example, as shown in FIG. 27, when a connecting member 14 without a reinforcing member 18 is used, a fitting roller 80 with a larger protruding height of the annular protrusion 80b can be used, and the annular protrusion 80b may be brought into contact with the other main surface 30b of the base 30 of the connecting member 14. Further, for example, 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 without an annular protrusion 80b can be used, and the outer peripheral surface 80a of the fitting roller 80 may be brought into contact with the rib 42 of the connecting member 14.

[0089] Furthermore, in the above-described embodiment, the composite pipe (regenerated pipe 206) in which the existing pipe 200 and the spiral pipe 202 are integrated by the filler 204 is formed, but the present invention is not limited thereto. The pipe manufacturing machine 50 according to the present invention can also form a self-supporting pipe that maintains strength independently from the existing pipe 200.

[0090] Note that all of the specific numerical values such as the dimensions listed above are merely examples, and can be appropriately changed according to the requirements such as the specifications of the product.

Explanation of reference numerals

[0091] 10... Pipe regeneration member 12... Lining member 14... Connecting member 50... Pipe manufacturing machine 52... Spiral winding guide device 54... Lining member feeding device 56... Connecting member guide device 58... Fitting device 60... Overall rotation device 70... Outer guide roller 72... Frame member 74a... Lining member feeding roller 74b... Reaction receiving roller 74c... Hydraulic motor 80... Fitting roller 82 … Reaction receiving roller 84 … Hydraulic motor 100 … Spiral pipe feeding roller 102 … Reaction receiving roller 106 … Hydraulic motor 200 … Existing pipe 202 … Spiral pipe 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 for guiding the lining member so as to wind it in a spiral shape; a fitting device that connects adjacent side edge portions of the lining member that is wound in a spiral shape in the spiral winding guide device by the connecting member; and a connecting member guide device that guides the connecting member to the fitting device, The fitting device includes: a fitting roller that rotates while pressing the connecting portion of the lining member from the outer surface side to fit the connecting portion and applies a rotational force to the helical tube; A hydraulic motor that rotates the engaging rollers; and a reaction force receiving roller provided at a position opposite to the fitting roller and pressing an inner surface side of the connecting portion of the lining member so as to sandwich the connecting portion of the lining member between the fitting roller and the reaction force receiving roller; 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 to the connecting member guide device; The connecting member guide device of the pipe making machine is formed in a cylindrical shape.

2. The pipe making machine according to claim 1 , wherein the connecting member guide device is disposed so as to pass outside the spiral winding guide device.

3. The lining member feed device further includes a lining member feed roller that applies a motive force to the lining member and feeds the lining member into the spiral winding guide device, 3. A pipe making machine according to claim 1, wherein the lining member is fed into the fitting device by the driving forces of both the fitting roller and the lining member feed roller.

4. A pipe making method for forming a helical pipe using the pipe making machine according to any one of claims 1 to 3, comprising the steps of: A pipe making method in which the spiral pipe is formed while pulling the connecting member into the fitting device by means of a fitting roller, without providing a drive unit to the connecting member guide device.

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