JP5641606B2 - Rehabilitation pipe manufacturing method - Google Patents

Description

  The present invention relates to a method for producing rehabilitated pipes for rehabilitating existing pipes such as sewage pipes, water pipes, agricultural water pipes and gas pipes.

  Conventionally, in an existing pipe, a long belt-like member is supplied to a pipe making machine supported in a manhole, and the supplied belt-like member is spirally wound by the pipe making machine, while being spirally wound and adjacent. The molten resin of the same material as that of the belt-like member is applied to at least one of the one side edge and the other side edge of the belt-like member, and the one side edge and the other side edge of the adjacent belt-like member are overlapped and joined. It has been proposed to rehabilitate the existing pipe by forming the rehabilitated pipe and inserting the regenerated pipe into the existing pipe while rotating (see, for example, Patent Document 1 and Patent Document 2). .

JP 2005-528243 Gazette Special table 2008-536027 gazette

  By the way, the pipe making work of the rehabilitated pipe by the pipe making machine described above has an advantage that it can be constructed even in a state where water is flowing down to the existing pipe, but the extrusion provided in the pipe making machine for joining the strip-like members. Many electric parts such as a temperature sensor are arranged in the welding machine. If the extrusion welding machine gets wet with water, it will be fatally damaged, and an expensive pipe making machine cannot be used. For this reason, pipework can be performed at a later date or the work environment, such as when construction is performed only for a short time such as at night due to traffic conditions, or when the flow rate of existing pipes suddenly increases due to sudden rain. When it is necessary to perform construction intermittently, such as when it is in place, the pipe making machine must be removed from the manhole when the pipe making work is completed so that the pipe making machine is not affected by the increased water during the holiday. . Then, in the pipe making work after the next day or the like, it is necessary to connect the rehabilitated pipe previously produced by the previous day and the renewed pipe newly produced on that day. That is, it is necessary to restart the pipe making operation by connecting the rear end of the belt-shaped member of the renovated pipe previously formed and the tip of the band-shaped member of the newly renovated pipe.

  However, because of the structure of the pipe making machine that joins the one side edge and the other side edge of the adjacent belt-like member through the molten resin to produce the rehabilitation pipe, It is very difficult and practically impossible to connect the front end of the strip-shaped member of the rehabilitation pipe newly formed at the rear end while ensuring strength and water tightness.

  The present invention has been made in view of such problems, and in the case where it is necessary to intermittently construct a rehabilitating pipe for rehabilitating an existing pipe, rehabilitation for rehabilitating the entire construction section of the existing pipe. It is an object of the present invention to provide a method for producing a rehabilitated pipe that can be produced easily and reliably.

In the present invention, a pipe making machine is installed in an opening, and a belt-like member is drawn into the pipe making machine from the ground side and wound spirally, and at least one of one side edge and the other side edge of the belt-like members adjacent to each other In the method of making a rehabilitated pipe, the rehabilitated pipe is inserted into the existing pipe while rotating the rehabilitated pipe by rotating and joining the molten resin. After making the rehabilitation pipe, cutting the rehabilitated pipe and disconnecting it from the pipe making machine, lifting the pipe making machine to the ground, installing the pipe making machine in the opening again, and newly renewing the pipe To make a new rehabilitation pipe integrated with the previous rehabilitation pipe. Is manufactured continuously.

  According to the present invention, after the rehabilitation pipe having a set length is produced by the pipe making machine, the strip-shaped member of the renovated pipe produced is cut and separated from the pipe making machine, and the renovated pipe thus produced is installed in the existing pipe. The pipe making machine is evacuated to the ground. On the other hand, at a later date and the like, after the pipe making machine is carried in again and assembled, the pipe making operation is resumed and a new renovated pipe is produced. And after making the front-end | tip of the renovated pipe newly produced hit the rear end of the renovated pipe produced previously, or after making it approach, both are connected integrally. Then, if the pipe making machine starts the new rehabilitation pipe, the rehabilitation pipe is added to the rear end of the new rehabilitation pipe integrated with the previously renovated pipe. Are continuously produced.

  As a result, the rehabilitation pipe that has been produced previously is connected to the rehabilitation pipe that has been newly produced on the following day, etc., to form a new rehabilitation pipe, and the rehabilitation pipe is added to the rear end of the new rehabilitation pipe. Even if it is necessary to construct a rehabilitated pipe that rehabilitates existing pipes by continuously making new rehabilitated pipes, rehabilitated pipes that rehabilitate the entire construction section of existing pipes. Easy and reliable pipe manufacturing.

In the present invention, a pipe making machine is installed in an opening, and a belt-like member is drawn into the pipe making machine from the ground side and wound spirally, and at least one of one side edge and the other side edge of the belt-like members adjacent to each other In the method of making a rehabilitated pipe, the rehabilitated pipe is inserted into the existing pipe while rotating the rehabilitated pipe by rotating and joining the molten resin. After making the rehabilitated pipe, cut the regenerated pipe and cut it from the pipe making machine, and after lifting the pipe making machine to the ground, install the pipe making machine in an opening different from the above opening, A new rehabilitation pipe is made at a position different from the position where the previous rehabilitation pipe is made and abuts or approaches the rehabilitation pipe previously made, and the new rehabilitation pipe and the previous rehabilitation pipe are integrated. It is characterized by connecting.

  According to the present invention, after the rehabilitation pipe having a set length is produced by the pipe making machine, the strip-shaped member of the renovated pipe produced is cut and separated from the pipe making machine, and the renovated pipe thus produced is installed in the existing pipe. The pipe making machine is evacuated to the ground. On the other hand, at a later date, after the pipe making machine is carried in and assembled at a position different from the position where the regenerated pipe was previously produced, the pipe making operation is resumed toward the direction of the regenerated pipe previously produced. A new rehabilitation pipe is made. Then, after the tip of the newly renovated pipe is abutted against or brought close to the tip of the renovated pipe previously produced, the two are integrally connected.

  As a result, the remanufactured pipe that renews the existing pipe is intermittently connected to the remanufactured pipe that has been previously produced by connecting the renewed pipe newly produced from a different position on the next day or later. Even when it is necessary to construct the rehabilitating pipe, the rehabilitating pipe for rehabilitating the entire construction section of the existing pipe can be easily and reliably produced.

  In the present invention, as the band-shaped member, a plurality of I-shaped ribs are erected perpendicularly to the substrate on the back surface of the band-shaped substrate, and a metal reinforcing strip is provided on each rib. It is preferable that it is embed | buried, and, thereby, the self-supporting intensity | strength of the renovated pipe manufactured by the strip | belt-shaped member is securable.

  Moreover, as an opening part which installs a pipe making machine, the existing end of the vicinity of a manhole etc. other than a manhole or a shaft, the opening edge part of an existing pipe, etc. can be mentioned.

  In this invention, it is preferable to connect the butt | matching part which a new renovated pipe and the previous renovated pipe oppose by welding. Thereby, the butt | matching part which the rehabilitation pipe | tube opposes can be integrally joined through the molten resin of the same material as the strip | belt-shaped member. Such connection of the rehabilitated pipe by welding is suitable for connection of a rehabilitated pipe manufactured from a band-shaped member of which the band-shaped member is difficult to adhere with an adhesive, such as polyethylene or polypropylene.

  In this invention, it is preferable to connect the butt | matching part which a new renovated pipe and the previous renovated pipe oppose by welding via a connection member. Thereby, by interposing the connection member between the new rehabilitation pipe and the previous rehabilitation pipe, the fillet part of the new rehabilitation pipe and the connection member, the fillet part of the previous rehabilitation pipe and the connection member, etc. Can be integrally joined via a molten resin made of the same material as that of the belt-like member and the connecting member, and a greater connection strength can be secured. Such connection of the rehabilitated pipe by welding is suitable for connection of a rehabilitated pipe manufactured from a band-shaped member of which the band-shaped member is difficult to adhere with an adhesive, such as polyethylene or polypropylene.

  In this case, the connecting member is formed by standing one or more ribs on the outer peripheral surface of the cylindrical substrate over the entire periphery, and the end surface of the previously renovated pipe and the newly renovated pipe. By connecting the ribs to the outer peripheral surface side of the rehabilitated pipe from the end face of the pipe, it is possible to prevent the strength of the butted portions of the old and new rehabilitated pipes from being lowered.

In the present invention, a pipe making machine is installed in an opening, and a belt-like member having fitting portions formed on both side edges is drawn from the ground side into the pipe making machine and spirally wound so that the belt-like members adjacent to each other are fitted. In the pipe making method of the rehabilitation pipe which is inserted into the existing pipe while rotating the rehabilitated pipe formed by fitting the joints together, the rehabilitation pipe of the set length is piped. After cutting the rehabilitated pipe that has been made , disconnect it from the pipe making machine, lift the pipe making machine to the ground, re-install the pipe making machine in the opening , make a new rehabilitation pipe, and make it first. Abutting or approaching the rehabilitated pipe, connecting the new rehabilitation pipe and the previous rehabilitation pipe together, and then continuously producing a new rehabilitation pipe integrated with the previous rehabilitation pipe. It is characterized by.

  According to the present invention, after the rehabilitation pipe having a set length is produced by the pipe making machine, the strip-shaped member of the renovated pipe produced is cut and separated from the pipe making machine, and the renovated pipe thus produced is installed in the existing pipe. The pipe making machine is evacuated to the ground. On the other hand, at a later date and the like, after the pipe making machine is carried in again and assembled, the pipe making operation is resumed and a new renovated pipe is produced. And after making the front-end | tip of the renovated pipe newly produced hit the rear end of the renovated pipe produced previously, or after making it approach, both are connected integrally. Then, if the pipe making machine starts the new rehabilitation pipe, the rehabilitation pipe is added to the rear end of the new rehabilitation pipe integrated with the previously renovated pipe. Are continuously produced.

  As a result, the rehabilitation pipe that has been produced previously is connected to the rehabilitation pipe that has been newly produced on the following day, etc., to form a new rehabilitation pipe, and the rehabilitation pipe is added to the rear end of the new rehabilitation pipe. Even if it is necessary to construct a rehabilitated pipe that rehabilitates existing pipes by continuously making new rehabilitated pipes, rehabilitated pipes that rehabilitate the entire construction section of existing pipes. Easy and reliable pipe manufacturing.

In the present invention, a pipe making machine is installed in an opening, and a belt-like member having fitting portions formed on both side edges is drawn from the ground side into the pipe making machine and spirally wound so that the belt-like members adjacent to each other are fitted. In the pipe making method of the rehabilitation pipe which is inserted into the existing pipe while rotating the rehabilitated pipe formed by fitting the joints together, the rehabilitation pipe of the set length is piped. After cutting the rehabilitated pipe that has been made , disconnect it from the pipe making machine, lift the pipe making machine to the ground, install the pipe making machine in an opening different from the above opening, and make the pipe position of the previous rehabilitation pipe A new rehabilitation pipe is made at a position different from that of the rehabilitation pipe, and the rehabilitation pipe previously made is abutted or approached, and the new rehabilitation pipe and the previous rehabilitation pipe are connected together. It is.

  According to the present invention, after the rehabilitation pipe having a set length is produced by the pipe making machine, the strip-shaped member of the renovated pipe produced is cut and separated from the pipe making machine, and the renovated pipe thus produced is installed in the existing pipe. The pipe making machine is evacuated to the ground. On the other hand, at a later date, after the pipe making machine is carried in and assembled at a position different from the position where the regenerated pipe was previously produced, the pipe making operation is resumed toward the direction of the regenerated pipe previously produced. A new rehabilitation pipe is made. Then, after the tip of the newly renovated pipe is abutted against or brought close to the tip of the renovated pipe previously produced, the two are integrally connected.

  As a result, the remanufactured pipe that renews the existing pipe is intermittently connected to the remanufactured pipe that has been previously produced by connecting the renewed pipe newly produced from a different position on the next day or later. Even when it is necessary to construct the rehabilitating pipe, the rehabilitating pipe for rehabilitating the entire construction section of the existing pipe can be easily and reliably produced.

  As the band-shaped member in the present invention, a plurality of ribs having a T-shaped cross section are erected perpendicularly to the substrate on the back surface of the band-plate-shaped substrate, and are folded into a W shape over the plurality of ribs. It is preferable that a bent metal reinforcing material is provided, whereby the self-supporting strength of the rehabilitated pipe produced by the belt-like member can be ensured.

  Moreover, as an opening part which installs a pipe making machine, the existing end of the vicinity of a manhole etc. other than a manhole or a shaft, the opening edge part of an existing pipe, etc. can be mentioned.

  In this invention, it is preferable to connect the butting | matching part which a new rehabilitation pipe | tube and the previous rehabilitation pipe | tube oppose by adhesion | attachment. Thereby, the butt | matching part which the rehabilitation pipe | tube opposes can be integrally joined through an adhesive agent. Such connection by attachment of the rehabilitating pipe is suitable for connection of rehabilitation pipes manufactured from a belt-like member made of a material that can be easily adhered by an adhesive, such as hard vinyl chloride.

  In this invention, it is preferable to connect the butting | matching part which a new rehabilitation pipe | tube and the previous rehabilitation pipe | tube oppose by a connection member. Thereby, by interposing the connection member over the new rehabilitation pipe and the previous rehabilitation pipe, the overlapping part of the new rehabilitation pipe and the connection member, the overlapping part of the previous rehabilitation pipe and the connection member, etc. Can be integrally bonded via an adhesive, and a greater connection strength can be secured. Such connection by attachment of the rehabilitating pipe is suitable for connection of rehabilitation pipes manufactured from a belt-like member made of a material that can be easily adhered by an adhesive, such as hard vinyl chloride.

  In this case, the connecting member is formed by standing one or more ribs on the outer peripheral surface of the cylindrical substrate over the entire periphery, and the end surface of the previously renovated pipe and the newly renovated pipe. By connecting the ribs to the outer peripheral surface side of the rehabilitated pipe from between the end faces of the pipe, it is possible to prevent the strength of the butted portions of the front and rear rehabilitated pipes from being lowered.

  ADVANTAGE OF THE INVENTION According to this invention, when the pipe making operation | work of the rehabilitation pipe which rehabilitates an existing pipe has to be constructed intermittently, the rehabilitation pipe which rehabilitates all the construction sections of an existing pipe can be easily and reliably produced. .

It is sectional drawing which shows an example of the strip | belt-shaped member used for the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is sectional drawing explaining the joining process of the strip | belt-shaped member of FIG. It is a perspective view which shows an example of the pipe making machine which enforces the pipe making method of the rehabilitation pipe | tube of this invention. It is a perspective view which abbreviate | omits and shows a drive mechanism of the pipe making machine of FIG. It is a top view which shows the pinch roller of the drive mechanism of FIG. 4 with a strip | belt-shaped member. It is a longitudinal cross-sectional view of the underground pipe line explaining one Embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining one Embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining one Embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining one Embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view which shows the state which joined the old and new renovated pipe with the connection member. It is a longitudinal cross-sectional view of the underground pipe line explaining other embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining other embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining other embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is a longitudinal cross-sectional view of the underground pipe line explaining other embodiment of the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is sectional drawing which shows the other example of the strip | belt-shaped member used for the pipe manufacturing method of the rehabilitation pipe | tube of this invention. It is sectional drawing explaining the fitting process of the strip | belt-shaped member of FIG.

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

  First, prior to describing an embodiment of the method for producing a rehabilitated pipe according to the present invention, the strip member 100 and the pipe making machine 1 to be used will be described.

  As shown in FIG. 1, the belt-like member 100 is formed by extruding flexible plastic, such as polyethylene, polypropylene, and the like, and is wound into a hollow cylindrical shape to be wound for transportation D (see FIG. 6). ) And transported to the site. The belt-like member 100 is formed by a plurality of (three in the embodiment) ribs 102 having an I-shaped cross section standing on the back surface of a belt-like substrate 101 so as to be perpendicular to the substrate 101. Then, the other side edge portion (hereinafter referred to as the other side edge portion) of the substrate 101 in the adjacent belt-like member 100 is disposed on one side edge portion (hereinafter referred to as the one side edge portion) of the substrate 101. In order to be able to do so, it is formed in the stepped portion 103 stepped down to the back side by the thickness of the substrate 101. Further, a reinforcing strip 104 such as a steel plate is embedded in each rib 102.

  Such a belt-like member 100 is supplied to the pipe making machine 1 to be described later and is spirally wound so that the back surface side of the substrate 101, that is, the side where the ribs 102 are erected is the outer peripheral surface side. At this time, as shown in FIGS. 2A and 2B, the molten resin c is applied to one side edge (stepped portion 103) of the succeeding belt-like member 100 among the belt-like members 100 and 100 adjacent to each other. In addition, by superimposing one side edge of the subsequent belt-shaped member 100 coated with the molten resin c from the outside (the outer peripheral surface side of the preceding belt-shaped member 100) on the other side edge of the preceding belt-shaped member 100, One side edge (stepped portion 103) of the substrate 101 of the subsequent belt-like member 100 is arranged and joined to the other edge of the substrate 101 of the preceding belt-like member 100, and the rehabilitated pipe S (see FIG. 3).

  Next, the pipe making machine 1 will be described with reference to FIGS.

  The pipe making machine 1 includes a guide frame 2 that spirally winds the belt-shaped member 100, a plurality of guide rollers 3 that are rotatably provided around the guide frame 2 at intervals in the circumferential direction, and a guide frame 2. The other side edge of the belt-like member 100 that is spirally wound and the side edge of the belt-like member 100 that is subsequently supplied to the pipe making machine 1 (the stepped-down portion 103) is overlapped. A drive mechanism 4 that sandwiches and feeds the adjacent strip-shaped members 100 and 100, and is provided in the guide frame 2 at the front stage of the drive mechanism 4, and the adjacent strip-shaped members 100 and 100 are subsequently connected to the pipe making machine 1. It comprises an extrusion welding machine 5 that softens one side edge portion 103 of the supplied belt-like member 100 and discharges the molten resin c.

  The guide frame 2 is formed by integrally connecting a pair of front and rear annular frames 21 and 21 with a plurality of connecting members 22 at intervals in the circumferential direction. The guide frame 2 is divided into a plurality of pieces (in the embodiment, three pieces at 120 degrees), and the guide frame 2 is carried into a manhole as an opening in the divided state. Assembled in a ring.

  In addition, the annular frame 21 on the rear side with respect to the pipe making direction has a part of an arc bent in an L shape inward corresponding to a drive mechanism 4 and an extrusion welding machine 5 described later, An arcuate auxiliary frame 23 is positioned between the front and rear annular frames 21 and 21 at a portion corresponding to the bent portion 211 and is connected to the annular frame 21 forward in the pipe making direction via a connecting member 22.

  The guide roller 3 is rotatably supported via a bearing (not shown) around each connecting shaft 31 fixed between the front and rear annular frames 21 and 21 constituting the guide frame 2.

  However, the guide roller 3 corresponding to the bent portion 211 of the annular frame 21 on the front side with respect to the pipe making direction is rotatably supported between the auxiliary frame 23 and the rear annular frame 21. The guide rollers 3 provided between the annular frames 21 and 21 are approximately half the length.

  Here, the guide roller 3 is made of metal or synthetic resin, and a plurality of grooves 3 a (see FIG. 4) having a width and a depth that can accommodate each rib 102 of the belt-like member 100 with a margin are provided on the belt-like member 100. It is formed corresponding to each rib 102. Thereby, the outer peripheral surface of the guide roller 3 comes into contact with the back surface of the substrate 101 in the belt-like member 100 that forms the rehabilitation pipe S. In addition, when the belt-like member 100 whose back surface is restricted by the guide roller 3 and wound spirally is rotated 360 degrees once, the width of the belt-like member 100 with respect to the belt-like member 100 to which the preceding belt-like member 100 follows is set. It is set so as to be displaced toward the pipe making direction by a substantially equivalent length. That is, the guide roller 3 is adjusted in the tube axis direction mounting position of the guide roller 3 with respect to the connecting shaft 31 so that the groove 3a gradually shifts in the tube axis direction as it moves in the circumferential direction. Although not shown in detail, the roller portion of the guide roller 3 corresponding to one side edge (stepped portion 103) of the belt-like member 100 is formed to have a slightly smaller diameter than the other roller portions.

  The drive mechanism 4 includes a mounting frame 41 fixed to the guide frame 2 using a space between the bent portion 211 of the annular frame 21 and the auxiliary frame 23 on the rear side with respect to the pipe making direction in the guide frame 2, and a mounting frame. 41 is a pair of an outer roller 421 and an inner roller 422, and a hydraulic motor (not shown) that is fixed to the mounting frame 41 and rotates the pinch roller 42 via the speed reduction mechanism 43. It is configured.

  Here, the speed reduction mechanism 43 shows only the sprocket 431 provided on the output shaft of the hydraulic motor provided on the mounting frame 41 and the rotation shaft of the outer roller 421 (only the sprocket provided on the rotation shaft of the outer roller 421 is shown in FIG. )), And a chain 432 wound between the sprockets 431 and gears 433 and 433 provided on the rotation shaft of the outer roller 421 and the rotation shaft of the inner roller 432, respectively, and meshing with each other, and the hydraulic motor is driven to rotate. As a result, the outer roller 421 is rotated via the sprocket 431 and the chain 432, and the inner roller 422 is rotated in a direction opposite to the rotation direction of the outer roller 421 via gears 433 and 433 that are meshed with each other.

  Further, the outer surface roller 421 rotates in contact with the back surface of the substrate 101, that is, the surface that becomes the outer peripheral surface of the renovated pipe S, between the adjacent ribs 102, 102 of the belt-shaped member 100. At this time, the outer peripheral surface of the outer roller 421 is knurled so that the belt-like member 100 can be fed out without slipping.

  In addition, the roller of the position corresponding to the one side edge part (step-fall part 103) of the strip | belt-shaped member 100 of the outer surface roller 421 is formed in a slightly smaller diameter than another roller, and the knurling process is not given.

  On the other hand, the inner surface roller 422 is formed in a cylindrical shape by a relatively hard material such as iron or plastic, for example, and the outer peripheral surface thereof is the flat surface of the substrate 101 in the strip member 100, that is, the inner peripheral surface of the rehabilitating pipe S. Rotates in contact with the surface on the side.

  The extrusion welding machine 5 is composed of a hot air machine unit, a plasticizing unit, and a welding rod supply unit in a body 51, takes in outside air and heats it, and blows out hot air through a blowing nozzle 52, and linear plastic such as polyethylene and polypropylene. A welding rod 10 (see FIG. 3) made of is introduced and heated and melted, and the molten resin c is extruded from the extrusion nozzle 53. The extrusion welding machine 5 is substantially in contact with one side edge (step 103) of the belt-like member 100 immediately before the blowout nozzle 52 and the extrusion nozzle 53 are supplied to the pinch roller 42 of the drive mechanism 4 in the pipe making machine 1. The guide frame 2 is fixed to the guide frame 2 using a space between the bent portion 211 of the front annular frame 21 and the auxiliary frame 23 so as to face each other in the state.

  The welding rod 10 is formed by linearly forming the same material as the plastic material forming the belt-like member 100, and is wound around the reel to be formed on the welding rod reel R so that it is in the vicinity of the extrusion welding machine 5. Positioned and provided on the guide frame 2.

  Here, the extrusion welder 5 is located inward of the guide frame 2 and is attached so that the blowout nozzle 52 and the extrusion nozzle 53 are substantially in contact with one side edge of the belt-like member 100. While the one side edge part of the member 100 can be reliably softened to a substantially molten state by hot air, the molten resin c can be reliably applied to the softened one side edge part.

  When the adjacent belt-like members 100, 100 are joined by the molten resin c, one side edge of the subsequent belt-like member 100 and one side edge of the subsequent belt-like member 100 are overlapped. It is preferable to soften the other side edge portion into a substantially molten state. In this case, a new heated air blowing nozzle may be disposed to face the other side edge of the preceding belt-like member 100.

  Next, a case where a manhole is used as an example of an opening will be described with respect to a method for producing a rehabilitated pipe S for rehabilitating an existing pipe using the pipe making machine 1 configured as described above.

  First, the existing pipe K is provided with a manhole for every predetermined span. In the adjacent manhole, one manhole M1 is set as a starting manhole in the construction section, and the other manhole M2 is set as a reaching manhole, and a starting manhole is set. The case where the renovated pipe S is manufactured in the existing pipe K from M1 toward the reaching manhole M2 will be described.

  As preparation before construction, for the production of the rehabilitated pipe S, a transport roll D, a pipe making machine 1, a power unit P, etc., each having a belt-like member 100 wound thereon, are prepared. Is placed on the ground on the start manhole M1 side. The pipe making machine 1 is disassembled into a guide frame 2 provided with a guide roller 3, a drive mechanism 4, and an extrusion welder 5, and the guide frame 2 is further divided into a plurality of parts. And each element of the divided pipe making machine 1 is assembled after it is carried inside through the manhole M1. The assembled pipe making machine 1 is supported in a suspended state using a truck crane or the like in the starting manhole M1 (see FIG. 3).

  When such a preparatory work is completed, the belt-like member 100 is pulled out from the transport roll D placed on the ground and pulled into the starting manhole M1, and the drive mechanism 4 in the pipe making machine 1 supported in the starting manhole M1. Is supplied to the pinch roller 42 through the mounting frame 41, and is pulled out from the pinch roller 42 and sent out to the inner peripheral side of the guide roller 3 provided on the guide frame 2. Here, the belt-like member 100 pulled out from the pinch roller 42 and sent out to the inner peripheral side of the guide roller 3 is spirally wound with the rib 102 guided by the groove 3 a of the guide roller 3. When the belt-like member 100 is spirally wound 360 degrees along the guide roller 3 of the guide frame 2 and reaches the pinch roller 42 of the drive mechanism 4 again, the belt-like member 100 is made in the pipe making direction by the width. The one side edge part of the following strip | belt-shaped member 100 supplied continuously is overlapped with the other side edge part, and is located ahead of the pinch roller 42.

  Here, when the extrusion welding machine 5 is operated, the outside air is sucked and heated, and the heated air is blown out from the blowing nozzle 52 toward one side edge of the succeeding belt-like member 100 to be softened to a substantially molten state. At the same time, the welding rod 10 is drawn from the welding rod reel R to be heated and melted, and the molten resin c is pushed out from the extrusion nozzle 53 and applied to one side edge (stepped portion 103) of the subsequent strip member 100. In this case, the extrusion welder 5 is mounted on the inner side of the guide frame 2, and the extrusion nozzle 53 faces the one side edge portion of the succeeding belt-like member 100 in a substantially contact state, so that the molten resin c Can be reliably applied to one side edge of the belt-like member 100.

  If the hydraulic motor of the drive mechanism 4 is driven to rotate in this state, the outer roller 421 is rotated via the sprocket 431 and the chain 432, and the inner roller 422 is rotated via the gears 433 and 433 that are meshed with each other. Rotate in a direction opposite to the direction, sandwich the preceding belt-like member 100 and the following belt-like member 100, and one side edge (stepped portion 103) of the belt-like member 100 following the other side edge of the preceding belt-like member 100 Are stacked and sent in the circumferential direction. At this time, one side edge portion of the subsequent belt-like member 100 is softened in a substantially molten state, and the molten resin c is applied to the one side edge portion, thereby adjacent to the pinch roller 42. The belt-like members 100 and 100 are fed out in the circumferential direction by integrally joining one side edge of the belt-like member 100 following the other side edge of the preceding belt-like member 100. That is, when the adjacent belt-like members 100 and 100 wound spirally along the guide roller 3 are sent out from the pinch roller 42, their other side edges and one side edge are wound spirally. In this state, they are joined together to form a pipe, and are sent out forward while rotating as the rehabilitation pipe S.

  Hereinafter, the belt-like member 100 has one side edge portion softened in a substantially molten state, and the molten resin c is applied to the one side edge portion and continuously supplied to the pinch roller 42 of the drive mechanism 4. In the pinch roller 42, one side edge part of the belt-like member 100 that follows the other side edge part of the preceding belt-like member 100 is integrally joined and extruded in the circumferential direction to continuously produce the regenerated pipe S. is there. Then, the renovated pipe S that has been piped is removed from the pipe making machine 1 by being pushed out while being rotated, and is inserted into the existing pipe K toward the reaching manhole M2 (see FIG. 6).

  In this way, the rehabilitated pipe S is produced from the belt-like member 100 that is continuously supplied to the pipe making machine 1, and the regenerated pipe S that has been produced is inserted into the existing pipe K while being rotated. If the pipe end of the rehabilitated pipe S is completed over the entire length of the construction target section of the existing pipe K after the end of the pipe reaches the reaching manhole M2, the pipe making machine is cut after the strip-like member 100 at the end of the rehabilitated pipe S is cut 1 is disassembled and removed from the starting manhole M1. That is, the drive mechanism 4 and the extrusion welder 5 are removed from the guide frame 2, and the guide frame 2 is divided into a plurality of parts and pulled up from the starting manhole M1.

  After that, although not shown in detail, a seal member is disposed in the gap between the existing pipe K and the both ends of the renovated pipe S so that water or the like does not enter the gap, and the backfill material is passed through the seal member. Fill the gap. When the backfill material is solidified, the rehabilitated pipe S is fixed to the existing pipe K by the solidified backfill material. Next, the protruding portion of the rehabilitation pipe S into the manholes M1 and M2 is cut off to complete the operation.

  By the way, when the rehabilitation pipe S cannot be continuously produced over the entire construction section, for example, when it is necessary to construct over a plurality of days, the rehabilitation pipe S is newly produced after the next day and the rehabilitation is performed over the entire construction section. The construction procedure for producing the pipe S will be described below, assuming that the renovated pipe S previously produced is the renovated pipe Sa and the newly produced regenerated pipe S is the renovated pipe Sb.

  First, when the pipe making work for one day is completed, the strip-shaped member 100 is cut to separate the pipe making machine 1 and the renovated pipe Sa, and the regenerated pipe Sa is left in the existing pipe K, while the pipe making machine 1 is disassembled. Then, it is pulled up from the starting manhole M1 to the ground (see FIG. 7).

  On the other hand, on the next day and after, the disassembled pipe making machine 1 is lowered into the starting manhole M1 and assembled, and then the strip member 100 is drawn into the pipe making machine 1 to start the pipe making work of a new renovated pipe Sb (FIG. 8). reference). Then, if the tip of the newly renovated pipe Sb is abutted against or brought close to the rear end of the renovated pipe Sa made by the previous day, the renovated pipe previously produced by the previous day The rear end edge portion of Sa is cut by a vertical plane perpendicular to the axis of the rehabilitated pipe Sa, and end face processing is performed. Similarly, the tip edge part of newly renovated pipe Sb is cut along a vertical plane orthogonal to the axis of rehabilitated pipe Sb, and end face processing is performed. Next, the front end face of the new renovated pipe Sb and the rear end face of the previous renovated pipe Sa are abutted, and the abutting portions facing each other are welded (see FIG. 9).

  Here, a handy type extrusion welding machine is used for welding of the facing portion where the new rehabilitated pipe Sb and the previous rehabilitated pipe Sa face each other. Although not shown in detail, this extrusion welding machine takes in outside air and heats it, blows out hot air through a blowout nozzle, and linear plastics such as polyethylene and polypropylene which are the same material as the plastic material forming the strip member 100 A welding rod made of is guided and melted by heating, and the molten resin is extruded from an extrusion nozzle.

  That is, by carrying an extrusion welding machine into the rehabilitated pipes Sa and Sb, softening the butted parts of the renewed pipes Sa and Sb into a substantially molten state with hot air, and filling the softened butted parts with molten resin, Both can be butt welded. Thereby, the previous renovated pipe Sa and the new renewed pipe Sb can be integrally connected.

  In this case, when the connection position of the previous renewal pipe Sa and the new rehabilitation pipe Sb is located in the vicinity of the connection portion between the starting manhole M1 and the existing pipe K, welding is performed from the inner peripheral side of the renovation pipes Sa and Sb. The welding can be performed not only from the outer peripheral side.

  Moreover, it is also possible to indirectly connect the facing portions of the remanufactured pipe Sa previously produced and the remanufactured pipe Sb newly produced via the connecting member 110 over the inner peripheral surface thereof. Good (see FIG. 10).

  Here, for example, as shown in FIG. 10, the connecting member 110 is integrally formed so that the rib 112 is perpendicular to the cylindrical substrate 111 having an outer diameter corresponding to the inner diameter of the rehabilitated tubes Sa and Sb. The belt-shaped member 100 is formed of the same resin.

  When this connecting member 110 is used, the rear end surface of the renovated pipe Sa that has been previously produced is subjected to end face treatment prior to the production of a new regenerated pipe Sb, and the connecting member 110 is drawn into the existing pipe K, The connecting member 110 is inserted into the inner peripheral surface of the rear end side of the rehabilitated pipe Sa that has been previously produced. Then, after the end surface of the regenerated pipe Sb that has been newly produced is approached to the regenerated pipe Sa that has been produced previously, the inner peripheral surface of the front end side is fitted into the connecting member 110, and the rib 112 is inserted. It protrudes from between the rear end surface of the rehabilitation pipe Sa and the front end face of the rehabilitation pipe Sb. Next, in the connecting member 110, in the circumferential direction between the front end surface of the substrate 111 and the rear end side inner peripheral surface of the rehabilitated pipe Sa in the circumferential direction and the rear end surface and the front end side inner peripheral surface of the rehabilitated pipe Sb. By heating each successive corner using an extrusion welder and softening it into a substantially molten state, melting the welding rod, filling the corner with molten resin, and fillet welding, The previous renovated pipe Sa and the new renovated pipe Sb can be integrally connected via the connecting member 110 without causing a decrease in strength.

  Note that the number of ribs 112 of the connecting member 110 is not limited to one, and may be a plurality of ribs, or a reinforcing strip such as a steel plate may be embedded in the substrate 111 or the ribs 112 or the substrate 111 and the ribs 112. Good.

  In this case, the connection member 110 formed in a cylindrical shape in advance is illustrated, but the strip plate-like substrate formed of the same resin as the strip member 100 is aligned with the inner peripheral surface of the facing portion of the rehabilitating tubes Sa and Sb. In this way, the connecting member can be formed by bending in order. When connecting such a connecting member and the renovated pipes Sa and Sb, each corner portion continuous in the circumferential direction between the substrate of the connecting member and the renovated pipes Sa and Sb is respectively surrounded by an extrusion welder. In addition to fillet welding, the butt portion between the leading edge and the trailing edge facing each other by winding the substrate 360 degrees may be butt welded using an extrusion welding machine.

  When the previous renewal pipe Sa and the new rehabilitation pipe Sb are integrally connected in this way, the strip-shaped member 100 is again supplied to the rear of the new rehabilitation pipe Sb by driving the pipe making machine 1 again. Then, the rehabilitated pipe Sb is additionally formed, and the newly regenerated pipe Sb is inserted into the existing pipe K while being rotated. In this case, since the new rehabilitation pipe Sb and the previous rehabilitation pipe Sa are integrally connected, when the new rehabilitation pipe Sb is manufactured, the previous rehabilitation pipe Sa is also integrated with the new rehabilitation pipe Sb. It will behave as a new rehabilitation pipe Sb.

  In this case, when the pipe making work in the construction section is interrupted due to water increase or the like, the pipe making work is resumed again when the work environment is ready, such as the next day, and the new renovated pipe Sb is replaced with the previous renovated pipe Sa. What is necessary is just to repeat making a new renovated pipe Sb after connecting integrally.

  Further, as another embodiment, the entire construction of the existing pipe K is performed by connecting the rehabilitated pipe Sa having a set length previously formed and the renewed pipe Sb having a set length newly produced after the next day or the like. You may make it manufacture the rehabilitation pipe | tube S which renovates an area.

  For example, as described above, the belt-like member 100 is drawn into the pipe making machine 1 assembled in the starting manhole M1 to produce the rehabilitated pipe Sa, and the regenerated pipe Sa that has been produced is sent out while rotating toward the reaching manhole M2. (See FIG. 11). Then, when the pipe making operation for one day is completed and the rehabilitated pipe Sa having a set length is made, the strip-shaped member 100 of the regenerated pipe Sa that has been piped is cut and the regenerated pipe Sa is removed from the pipe making machine 1. While separating and leaving the renovated pipe Sa in the existing pipe K, the pipe making machine 1 is disassembled and pulled up from the starting manhole M1 to the ground (see FIG. 12).

  On the other hand, when the pipe making operation is resumed on the next day or the like, the pipe making machine 1 disassembled into a position different from the starting manhole M1 where the renovated pipe Sa has been piped first, for example, the adjacent reaching manhole M2, is carried. Then, after lowering to the reaching manhole M2 and assembling, the belt-like member 100 is pulled into the pipe making machine 1 to start the pipe making work, and the newly renovated pipe Sb is sent out while rotating toward the starting manhole M1 ( (See FIG. 13). And by making the rehabilitation pipe Sb of the set length anew, if the tip of the new rehabilitation pipe Sb is brought close to or brought into contact with the tip of the rehabilitation pipe Sa made by the previous day, The tip edge portion of the rehabilitated pipe Sa previously produced up to the previous day is cut by a vertical plane orthogonal to the axis of the rehabilitated pipe Sa and subjected to end face processing. Similarly, the tip edge part of newly renovated pipe Sb is cut along a vertical plane orthogonal to the axis of rehabilitated pipe Sb, and end face processing is performed. Next, the tip surface of the new rehabilitated pipe Sb and the tip surface of the previous rehabilitated pipe Sa are abutted, and the abutting portions facing each other are welded using an extrusion welding machine. Thereby, the previous rehabilitation pipe Sa and the new rehabilitation pipe Sb can be integrally connected (see FIG. 14).

  In this case, you may connect the previous renovated pipe Sa and the new renovated pipe Sb indirectly through the connecting member 110.

  When such a pipe making method is adopted, the friction between the existing pipe K and the renovated pipe S is reduced as compared with the case where the renovated pipe is continuously produced over the entire length of the construction section. Thus, the rotational torque required by the pipe making machine 1 can be reduced, and the small pipe making machine 1 can be used.

  In the embodiment described above, the manhole M is exemplified as the opening for installing the pipe making machine 1. However, for example, the pipe making machine 1 may be installed in a shaft excavated from the ground in a mountainous area or the like. it can. In addition, when a pipe making machine is installed in an existing pipe near a manhole or when an existing pipe having both ends opened is rehabilitated, the pipe making machine can be installed at one end of the existing pipe. Therefore, not only when installing a pipe making machine in a manhole or shaft, but when installing a pipe making machine in an existing pipe near the manhole, etc., when installing a pipe making machine in the open end of an existing pipe, Furthermore, the case where a pipe making machine is installed across a manhole or the like and an existing pipe is included when the pipe making machine is installed in the opening.

  By the way, in embodiment mentioned above, the case where the renovated pipe | tube S is manufactured by joining the one side edge part and other side edge part of the adjacent strip | belt-shaped member 100 wound spirally through the molten resin c. Although demonstrated, it is not limited to the pipe manufacturing method of the renovated pipe S by such a strip | belt-shaped member 100. FIG. For example, as shown in FIG. 15, a belt-like member 200 with a reinforcing material made of a belt-like member 210 formed by extrusion molding of hard vinyl chloride and the like and a reinforcing material 220 attached to the belt-like member 210 is manufactured. It can also be applied to a pipe making method in which the rehabilitated pipe S is produced by drawing it into a pipe machine (not shown), winding it in a spiral, and fitting the fitting parts of the adjacent band members 200 with reinforcing material together. .

  Hereinafter, the band member 200 with the reinforcing material will be described.

  The band-shaped member 210 constituting the band-shaped member 200 with the reinforcing material is provided with a plurality of T-shaped reinforcing ribs 212 on the back surface of the band-plate-shaped substrate 211, with the tips positioned parallel to the substrate 211. A fitting convex portion 213 as a fitting portion is erected on the back surface of one side edge portion of the substrate, and a side edge portion of the substrate 211 provided with the fitting convex portion 213 is disposed on the other side edge portion. As shown in the figure, the stepped portion 214 is formed in the stepped portion 214 stepped down to the back side by the thickness of the substrate 211, and the stepped portion 214 is provided with a fitting concave portion 215 as a fitting portion into which the fitting convex portion 213 can be fitted. ing. The fitting recess 215 is formed with an inclined rib 216 that is inclined so as to be positioned on the protruding side of the fitting recess 215 as the distance from the substrate 211 increases.

  The reinforcing member 220 constituting the belt-like member 200 with the reinforcing member is formed by bending a strip-like steel plate continuous in the longitudinal direction into a substantially W-shaped cross section or the like, and a plurality of reinforcing ribs of the belt-like member 210. 212 is mounted.

  Such a band-like member 200 with a reinforcing material is drawn out from the drum D and drawn into a pipe making machine so that the back surface side of the substrate 211, that is, the side where the reinforcing ribs 212 and the like are erected is the outer peripheral side. In the fitting process by a pinch roller of a drive mechanism (not shown), the fitting convex portion 213 of one belt-like member 210 out of the belt-like members 200 with reinforcing members adjacent to each other, as shown in FIG. By fitting the fitting recess 215 of the other belt-like member 200 from the outside (the outer peripheral side of the preceding belt-like member 200), the belt-like members 200, 200 adjacent to each other are fitted to each other, and the rehabilitation pipe S having a predetermined pipe diameter. Is made.

  At this time, the stepped portion 214 of the belt-like member 200 following the side edge portion of the substrate 211 provided with the fitting convexity 213 of the preceding belt-like member 200 is disposed, and the fitting convexity of the preceding belt-like member 200 is arranged. The inclined rib 216 of the belt-like member 200 following the reinforcing rib 212 on the side where the portion 213 is provided is locked.

  Such a belt-like member 200 with a reinforcing material is spirally wound by a pipe making machine to produce a rehabilitation pipe S, and the rehabilitation pipe Sa previously produced and the newly produced rehabilitation pipe Sb. In the case of connection, adhesion by an adhesive can be employed in correspondence with the band-shaped member 210 being molded from hard vinyl chloride or the like. Specifically, an adhesive may be applied to the facing portion between the rehabilitated pipe Sa and the new rehabilitated pipe Sb, and both may be connected by bonding with the adhesive.

  On the other hand, in order to connect the previous renovated pipe Sa and the new renovated pipe Sb via the connecting member 110, the connecting member 110 is formed of hard vinyl chloride, which is the same resin as the belt-like member 210. And an adhesive agent is apply | coated to at least one of the outer peripheral surface of the connection member 110, and each edge part inner peripheral surface of each renovated pipe Sa, Sb, and the connection member 110 is connected with the edge part of the previous renovated pipe Sa, and a new renovated pipe. The rehabilitation pipes Sa and Sb can be connected to each other by bonding with an adhesive via the connection member 110 by being inserted over the end edge of Sb.

  In this case, the connecting member is formed by sequentially bending a strip-like substrate formed of the same resin as the strip-shaped member 210 so as to be along the inner peripheral surface of the facing portion of the rehabilitated tubes Sa and Sb. Also good. When such a connection member is used, an adhesive may be applied to the outer surface of the belt-like substrate and bonded while being curved. And the butted part of the front-end edge and back-end edge which oppose by connecting a strip | belt-plate-shaped board | substrate by 360 degree | times is connected by adhesion | attachment with an adhesive agent.

  In addition, although the band member 200 with the reinforcing material described above is configured by mounting the steel plate reinforcing material 220 bent into a substantially W-shaped cross section over the plurality of reinforcing ribs 212, the reinforcing material 220 is necessarily required. The rehabilitated pipe S can be manufactured only by the belt-like member 210 instead of the one.

DESCRIPTION OF SYMBOLS 1 Pipe manufacturing machine 2 Guide frame 3 Guide roller 4 Drive mechanism 5 Extrusion welding machine 100,210 Band-shaped member 110 Connection member 200 Band-shaped member with a reinforcing material S, Sa, Sb Rehabilitated pipe K Existing pipe M1, M2 Manhole

Claims (8)

A pipe making machine is installed in the opening, the belt-like member is drawn into the pipe making machine from the ground side, and spirally wound, and molten resin is applied to at least one of the one side edge and the other side edge of the belt-like members adjacent to each other. In the pipe making method of the rehabilitated pipe which is inserted into the existing pipe while rotating the piped rehabilitated pipe by rotating and joining the pipes by overlapping and joining them.
After making the rehabilitated pipe of the set length, cutting the rehabilitated pipe that has been made and separating it from the pipe making machine, lifting the pipe making machine to the ground, and then installing the pipe making machine in the opening again, A new rehabilitation pipe is made to abut or approach the rehabilitation pipe previously formed, and the new rehabilitation pipe and the previous rehabilitation pipe are connected together, and then integrated with the previous rehabilitation pipe. A method for producing a rehabilitated pipe, comprising continuously producing new rehabilitated pipes. A pipe making machine is installed in the opening, the belt-like member is drawn into the pipe making machine from the ground side, and spirally wound, and molten resin is applied to at least one of the one side edge and the other side edge of the belt-like members adjacent to each other. In the pipe making method of the rehabilitated pipe which is inserted into the existing pipe while rotating the piped rehabilitated pipe by rotating and joining the pipes by overlapping and joining them.
The remanufactured pipe of the set length is made, and the reclaimed pipe is cut and separated from the pipe making machine, the pipe making machine is pulled up to the ground, and then the pipe making machine is placed in an opening different from the above opening. Is installed, and a new rehabilitation pipe and a previous rehabilitation pipe are made by making a new rehabilitation pipe at a position different from the production position of the previous rehabilitation pipe and abutting or approaching the rehabilitation pipe previously produced. A method for producing a rehabilitated pipe, characterized by connecting the two together.   3. The method for producing a rehabilitated pipe according to claim 1, wherein a facing portion between the new rehabilitated pipe and the previous rehabilitated pipe is connected by welding.   3. The method for producing a rehabilitated pipe according to claim 1 or 2, wherein a facing portion between the new rehabilitated pipe and the previous rehabilitated pipe is connected by welding via a connecting member. Tube method. A pipe making machine is installed in the opening, and a belt-like member with fitting parts formed on both side edges is drawn into the pipe making machine from the ground side and wound spirally, and the fitting parts of the belt-like members adjacent to each other are wound together. In the pipe making method of the rehabilitated pipe, the rehabilitated pipe is inserted into the existing pipe while rotating the rehabilitated pipe formed by fitting,
After making the rehabilitated pipe of the set length, cutting the rehabilitated pipe that has been made and separating it from the pipe making machine, lifting the pipe making machine to the ground, and then installing the pipe making machine in the opening again, A new rehabilitation pipe is made to abut or approach the rehabilitation pipe previously formed, and the new rehabilitation pipe and the previous rehabilitation pipe are connected together, and then integrated with the previous rehabilitation pipe. A method for producing a rehabilitated pipe, comprising continuously producing new rehabilitated pipes. A pipe making machine is installed in the opening, and a belt-like member with fitting parts formed on both side edges is drawn into the pipe making machine from the ground side and wound spirally, and the fitting parts of the belt-like members adjacent to each other are wound together. In the pipe making method of the rehabilitated pipe, the rehabilitated pipe is inserted into the existing pipe while rotating the rehabilitated pipe formed by fitting,
The remanufactured pipe of the set length is made, and the reclaimed pipe is cut and separated from the pipe making machine, the pipe making machine is pulled up to the ground, and then the pipe making machine is placed in an opening different from the above opening. Is installed, and a new rehabilitation pipe and a previous rehabilitation pipe are made by making a new rehabilitation pipe at a position different from the production position of the previous rehabilitation pipe and abutting or approaching the rehabilitation pipe previously produced. A method for producing a rehabilitated pipe, characterized by connecting the two together.   7. The method for producing a rehabilitated pipe according to claim 5, wherein a facing portion between the new rehabilitated pipe and the previous rehabilitated pipe is connected by bonding.   The rehabilitation pipe manufacturing method according to claim 5 or 6, wherein a facing portion of the new rehabilitation pipe and the previous rehabilitation pipe is connected by bonding through a connecting member. Tube method.

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