JP2011104941A - Pipe making apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve execution by operating smoothly an apparatus upon making a lining pipe for change of an old pipe by winding spirally a long size band material. <P>SOLUTION: One embodiment of a pipe making apparatus 1 is equipped with a jointing mechanism 4 for jointing band materials with one another in a molding frame 2 installed in an inner side of an old pipe 200, wherein the jointing mechanism 4 is equipped with an inner roller for inserting the band material from outer and inner sides and an outer roller 43, the outer roller 43 is installed with an end part roller 5 in the end part of the outer roller 43, the end part roller 5 is installed in a roller axis of the outer roller 43 under un-movable conditions, and further the end part roller 5 is installed with a rotating means for accepting both of a rotating power caused by adhering to the inner wall of the old pipe 200 and a rotating power caused by adhering to the lining pipe 130. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pipe manufacturing apparatus for manufacturing a lining pipe formed by spirally winding a long strip on an inner surface of an existing pipe such as an agricultural water pipe, a sewer pipe, a water pipe, or a gas pipe. .

  In existing pipes such as agricultural water pipes, sewer pipes, and water pipes, the existing pipes are rehabilitated by lining the inner surface of the existing pipes with synthetic resin, etc., as a countermeasure when the existing pipes become old due to cracks or corrosion. The method to be taken is taken.

  As a method of lining the inner surface of such an existing pipe, a method of manufacturing a lining pipe for lining by spirally winding a long strip with joints formed on both side edges in the existing pipe It has been known. For example, in Patent Document 1, a drum around which a belt-like body is wound is installed on the ground, a pipe making device is arranged in an existing pipe, and the belt-like body is continuously supplied from the drum to the pipe making device in a spiral shape. A method is described in which a lining pipe is formed by winding and joining adjacent joints in a strip. The lining pipe is left as it is in the existing pipe, and a lining pipe is additionally formed by supplying and joining a new band-shaped body.

  This type of pipe making apparatus includes a molding frame that is formed in an annular shape by pivotally supporting a plurality of guide rollers, and a joining mechanism for joining the joints of both side edges of the belt-like body, The joining mechanism part is constituted by an outer roller and an inner roller.

  During pipe making, the joining mechanism including the outer roller moves around along the inner surface of the existing pipe together with the forming frame. However, since the inner surface of the existing pipe has deposits or cracks or unevenness due to long-term use, the outer roller may be caught by such unevenness. In addition, if the outer roller is caught by the unevenness on the inner surface of the existing pipe, it cannot be smoothly rotated, and it is difficult to move the joining mechanism part around. In such a case, the pipe making operation cannot be smoothly performed, and an operation of pulling out or replacing the outer roller becomes necessary. In addition, the pipe diameter of the lining pipe to be manufactured may not be constant, and the pipe manufacturing operation may be interrupted.

Japanese Patent No. 3072015

  As described above, in the conventional pipe making apparatus, when the outer roller and the unevenness of the inner surface of the existing pipe come into contact, the pipe making operation is interrupted and the operator has to make corrections so that it rotates smoothly. Rather, the work takes time. When rehabilitating existing pipes, fluids in the pipelines may be blocked or diverted during the work, and the ground traffic may be affected, so work should be carried out accurately and safely in as short a time as possible. Is required.

  Also, even if the inner surface of the existing pipe is not uneven, a belt-like body with joints formed on both side edges is spirally wound, and adjacent joints are joined together to form a lining pipe. When the lining pipe is already wound, the lining pipe formed in contact with the bottom of the existing pipe by its own weight. Then, when the joining mechanism part goes around near the bottom of the lining pipe, the outer roller enters the shape between the outer surface of the lining pipe and the inner face of the existing pipe.

  For this reason, the resistance force which arises between a lining pipe | tube and a pipe making apparatus acts on an outer roller. Such a resistance force may hinder smooth rotation of the inner roller and the outer roller, further restricting the rotation of the outer roller, and causing a problem that a new belt-like body to be fed is loosened. If the rotation of the outer roller is stopped, there is a problem that an operator has to perform maintenance of the pipe making apparatus such as the joining mechanism section, and the pipe making work has to be interrupted. Also, if the belt is loose, it will be wound with a larger diameter than the lining pipe that has already been wound, and the lining pipe may gradually become thicker as the pipe making operation proceeds. Therefore, none of them was preferable.

  In the present invention, in order to cope with such a conventional problem, when making a lining pipe for rehabilitating an existing pipe by spirally winding a long band-like body, work labor is saved as much as possible. It is an object of the present invention to provide a pipe making apparatus that enables efficient pipe making in a short time, and makes a lining pipe in an existing pipe with a certain size and high precision to enable a highly safe pipe making method.

  In order to achieve the above-described object, the present invention continuously supplies a long band-like body in which joints are formed on both side edges in the width direction and winds the band-like body while spirally winding the band-like body. Is a pipe making apparatus that forms a lining pipe by joining the joint portions of adjacent strips together, a molding frame installed inside the existing pipe and moving around along the inner surface of the existing pipe; A joining mechanism portion that is provided in the molding frame so as to move around along the inner surface of the existing pipe together with the molding frame, and joins the joint portion of the wound belt-like body and the joint portion of the newly supplied belt-like body. In this joining mechanism portion, an inner roller and an outer roller for sandwiching the belt-like body from the inner surface side and the outer surface side thereof are arranged along the tube axis direction of the existing pipe through respective one end portions. And the outer The other end portion of the roller is provided with a rotating means for allowing both the rotational force generated when the outer roller is in contact with the outer surface of the strip and the rotational force generated when the outer roller is in contact with the inner wall of the existing pipe. The roller is provided on a roller shaft that supports the outer roller.

  As a result, even if the outer roller and the inner wall of the existing pipe come into contact with each other, a resistance force that stops the rotation of the outer roller is not generated, so that the operation of the joining mechanism portion is not stopped and the lining is smoothly performed. Tubes can be made. As a result, it is possible to avoid time and effort such as interrupting the pipe making operation and making corrections by the operator, and the lining pipe can be accurately and safely produced with a constant pipe diameter.

  In the pipe manufacturing apparatus having the above-described configuration, the end roller is rotatably supported on the roller shaft of the outer roller, and the rotating means is a plurality of bearings arranged on the outer peripheral surface of the end roller. It is characterized by being.

  As a result, the end roller generates a rotational force in the opposite direction between the rotational force acting by contacting the outer surface of the belt-like body and the rotational force acting by contacting the inner wall of the existing pipe. Both of them are allowed and resistance to stop rotation of the outer roller is not generated, so that the operation of the joining mechanism portion is not stopped and the lining pipe can be smoothly produced.

  Further, in the pipe making apparatus having the above-described configuration, the end roller includes a gear mechanism including a pair of gears meshing with each other as a rotating unit, and the gear mechanism includes an outer surface of the belt-like body and an existing pipe. It may be in contact with the inner wall and rotate in a direction in which the gears oppose each other. Further, the end roller may be provided with a plurality of gear mechanisms, and these end rollers may be arranged in a direction crossing each other.

  In this case as well, both the rotational force acting when the gear mechanism comes into contact with the outer surface of the belt-like body and the rotational force acting when coming into contact with the inner wall of the existing pipe are allowed in opposite directions. Thus, the outer roller does not have a resistance to stop the rotation, so that the operation of the joining mechanism portion is not stopped and the lining pipe can be smoothly produced.

  According to the pipe manufacturing apparatus of the present invention configured as described above, since the pipe can be manufactured without bringing the outer roller of the joining mechanism portion into contact with the inner surface of the existing pipe, it is in contact with the inner surface of the existing pipe. Therefore, it is possible to efficiently and smoothly produce pipes in a short period of time without the need for work. Further, unnecessary force does not act on the strips to be joined, and a lining pipe having a certain size can be accurately produced in the existing pipe, so that a highly safe pipe making method can be achieved.

It is explanatory drawing which shows 1 process at the time of renovating an existing pipe using the pipe manufacturing apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the post process of FIG. It is sectional drawing which shows an example of the strip | belt-shaped body which forms the lining pipe | tube in this embodiment. It is explanatory drawing which shows a mode that the strip | belt body of FIG. 3 and the strip | belt body supplied adjacently are mutually joined. It is explanatory drawing which shows the state which joined the said strip | belt bodies by a cross section. It is a perspective view of a pipe making device concerning one embodiment of the present invention. It is a side view which shows the pinch roller of the joining mechanism part in the pipe manufacturing apparatus of embodiment. FIG. 8A is a front view of an end roller, and FIG. 8B is a side view of the outer roller. It is explanatory drawing which shows the mode of the renovation of the existing pipe | tube using the pipe manufacturing apparatus which concerns on one Embodiment of this invention. FIG. 10A is a front view of the end roller, and FIG. 10B is a side view of the outer roller. FIG. 11A is a front view of the end roller, and FIG. 11B is a side view of the outer roller. Fig.12 (a) is sectional drawing which shows the other example of the strip | belt-shaped body which forms a lining pipe | tube, FIG.12 (b) is a fragmentary perspective view of a junction part.

  Hereinafter, an embodiment for carrying out a pipe making apparatus according to the present invention will be described with reference to the drawings.

  1 and 2 are explanatory views showing a method of rehabilitating an existing pipe using the pipe making apparatus according to the embodiment of the present invention. In the following description, for the sake of convenience of description, the traveling direction in the pipe line when the lining pipe is manufactured by the pipe manufacturing apparatus 1 is defined as the forward direction, and the opposite direction is defined as the rear direction.

  The pipe making apparatus 1 continuously supplies a long strip 100, winds the strip 100 in a spiral, and joins adjacent joints of the strip 100 by winding to form a lining. An apparatus for forming the tube 130.

  Here, prior to the description of the pipe manufacturing apparatus 1, first, an embodiment of the belt-like body 100 will be described with reference to FIGS.

  3 is a cross-sectional view showing an example of the belt-like body 100 constituting the lining pipe 130, FIG. 4 is an explanatory view showing a state in which adjacent belt-like bodies are joined to each other in the belt-like body 100 of FIG. 3, and FIG. It is explanatory drawing which shows the state by which strip | belt-shaped bodies were joined.

  A belt-like body 100 shown in FIG. 3 is formed using a synthetic resin material such as hard vinyl chloride, polyethylene, and polypropylene, for example, and has a long belt shape having flexibility. On both side edges in the width direction of the belt-like body 100, a joint convex portion 101 and a joint concave portion 102 (joint portion) that are joined to the adjacent belt-like body 100 by fitting are formed along the longitudinal direction.

  The joint convex part 101 is provided with the support | pillar part 104 and the insertion part 105 of the cross-sectional substantially circular shape of a front-end | tip. Further, the joint recess 102 is formed on the side edge portion on the opposite side of the joint convex portion 101, and is inserted into the insertion portion 106 having a substantially circular cross section, and on the outer side (upward in FIG. 3) of the insertion portion 106. A formed flange portion 107 is provided. In the vicinity of the bonding convex portion 101, a band-shaped soft elastic body such as an elastomer that prevents slipping and adheres to each other when the band-shaped bodies 100, 100 are bonded together may be disposed in advance.

  Between the joint convex part 101 and the joint recessed part 102 of the strip | belt-shaped body 100, several rib 103 ... 103 is standingly arranged along the longitudinal direction. The tip portions of these ribs 103... 103 are formed in a substantially T-shaped cross section and have a configuration similar to the flange portion 107 of the joint recess 102.

  Further, the belt-like body 100 has an inclined piece 108 that is refracted and extended in an oblique direction on the outer edge side of the joint recess 102. The tip of the inclined piece 108 has a substantially T-shaped rib 103 formed on the side of the joint convex portion 101 when the joint concave portion 102 is fitted to the joint convex portion 101 of the adjacent band-like body 100. It is comprised so that it may latch on a front-end | tip part.

  The belt-like body 100 formed with such a structure is spirally wound by a pipe manufacturing apparatus 1 described later. In the winding process, as shown in FIG. 4, of the two adjacent strips 100, 100, the joint convex part 101 of the other strip 100 is formed in the joint concave part 102 of one strip 100. It is fitted from the inner side (the inner side of the band 100 already wound). Further, the inclined piece 108 of the belt-like body 100 is pressed and fitted into the tip end portion of the rib 103 of the adjacent belt-like body 100. Thereby, as shown in FIG. 5, the strips 100, 100 arranged adjacent to each other are joined to each other.

  The band-like bodies 100, 100 have increased bonding strength due to the fitting between the bonding convex portion 101 and the bonding concave portion 102 and the fitting of the inclined piece 108, and the water-stopping property of the lining pipe 130 to be formed is also increased. It has been. As shown in FIG. 1, the strip 100 extruded into such a cross-sectional shape is prepared on the enforcement site so that it is wound around a winding drum 91 and fed out from the winding drum 91.

  As shown in FIG. 1, the existing pipe 200 buried in the ground is provided with manholes 201 and 202 for each predetermined span, and the lining pipe is formed in the existing pipe 200 by using these manholes 201 and 202. 130 is manufactured. The lining pipe 130 is formed from the starting side manhole 201 of the existing pipe 200 toward the arrival side manhole 202.

  Then, as shown in FIG. 2, the strips 100 supplied to the pipe making apparatus 1 are joined to each other, and the lining pipes 130 are sequentially formed in the existing pipe 200.

  FIG. 6 is a perspective view showing the pipe making apparatus 1 according to the embodiment.

  The pipe forming apparatus 1 in the illustrated form includes a molding frame 2 installed inside the existing pipe 200, and joins the joint portion of the belt-like body 100 newly supplied to the joint portion of the wound strip-like body 100. The joining mechanism portion 4 is integrally provided on the molding frame 2.

  The molding frame 2 includes a plurality of link bodies 21, and the guide rollers 3 are rotatably provided on the link bodies 21. The plurality of link bodies 21... 21 are connected to each other so as to form a substantially ring shape. Is formed. Further, the adjacent link bodies 21 have a structure in which the mutual rotational operation is restricted within a certain range to prevent bending inward or outward.

  The guide roller 3 is pivotally supported by each link body 21 and is disposed so as to contact the flat inner surface of the belt-like body 100, that is, the inner peripheral surface of the lining pipe 130. The guide roller 3 is made of synthetic resin or metal and is rotatably supported. Further, since the guide roller 3 is arranged so as to be perpendicular to the belt-like body 100, the guide roller 3 comes into contact with the inner peripheral surface of the lining pipe 130 manufactured in the existing pipe 200 and circulates the pipe manufacturing apparatus 1. Move.

  FIG. 7 is an explanatory view showing the internal structure of the joining mechanism section 4 in the pipe making apparatus 1.

  In the joining mechanism portion 4, an inner roller 42 and an outer roller 43 that sandwich the belt-like body 100 from the inside and the outside are pivotally supported in a cantilever manner in a gear box 40 that houses a gear mechanism. The gear box 40 may be provided with a support wheel 47 on the front side that rotates in contact with the inner surface of the existing pipe. The support wheel 47 may have a larger diameter than the outer roller 43, and the rotation shaft may be provided at a location different from the rotation shaft of the outer roller 43. This brings about the effect of maintaining stability without being affected by irregularities on the inner surface of the existing pipe 200.

  Inside the gear box 40, a pinch roller 41 in which an inner roller 42 and an outer roller 43 are paired, and a gear mechanism 46 that periodically rotates the pinch roller 41 are provided.

  The pinch roller 41 includes an inner roller 42 and an outer roller 43 as a pair, and sandwiches the belt-like body 100 from the inside and the outside. Further, the joining mechanism unit 4 is provided with a hydraulic motor 45, and rotates the pinch roller 41 via a gear mechanism 46 in the gear box 40. As shown in FIG. 1, the hydraulic motor 45 is driven by pressure oil supplied from the hydraulic unit 93 via the pressure oil hose, and the hydraulic unit 93 is driven by electric power supplied from the generator 92.

  The inner roller 42 and the outer roller 43 are axially supported in a direction parallel to the tube axis of the existing tube 200. The rotation shaft of the inner roller 42 and the rotation shaft (roller shaft) of the outer roller 43 are arranged so that the axial direction is orthogonal to the lead angle to be supplied spirally to the belt-like body 100, and rotate around the gear box 40. It is supported freely. When the hydraulic motor 45 is driven to rotate, the inner roller 42 and the outer roller are connected via a gear mechanism 46 that is fixed to the output shaft 451, the rotation shaft 421 of the inner roller 42, and the rotation shaft 431 of the outer roller 43 and meshes with each other. 43 rotates in opposite directions, and the belt-like body 100 is sandwiched between the inner roller 42 and the outer roller 43 and sent out.

  In other words, the inner roller 42 is rotated by the driving force from the gear mechanism 46, and has a function of sandwiching the belt-like body 100 between the inner roller 42 and the outer roller 43 and sending it out.

  The inner roller 42 has a length that is twice or more the width of the belt-like body 100 and is formed in a cylindrical shape by a steel material or the like. Further, the outer diameter is set so that the outer peripheral surface of the inner roller 42 contacts and rotates on the smooth inner peripheral surface where the preceding belt-like body 100 and the subsequent belt-like body 100 are joined.

  The outer roller 43 is arranged so that the preceding belt-like body 100 and the succeeding belt-like body 100 are in contact with the adjacent joints, and moves around the inner track of the inner surface of the existing pipe 200. The outer roller 43 is provided with a plurality of disk-shaped rollers 432... 432 arranged around the cylindrical shaft portion 433 between the ribs 103. The roller 432 is formed with a width that can be inserted between the adjacent ribs 103. In addition, the outer diameter dimension is set so as to have a gap corresponding to the thickness of the substrate 101 of the belt-like body 100 between the outer peripheral surface of the outer roller 43 (the outer diameter of the roller 432) and the outer peripheral surface of the inner roller 42. Yes.

  The outer roller 43 rotates while the ribs 103 of the strips 100 are in contact with the outer peripheral surface of the roller 432. The outer peripheral surface of the roller 432 is knurled. Note that the outer peripheral surface of the shaft portion 433 is knurled, and the outer roller 43 rotates without sliding with respect to the belt-like body 100 (the tip portion of the rib 103) when the belt-like body 100 and the shaft portion 433 come into contact with each other. Such a configuration may be adopted.

  Here, a plurality of embodiments of the outer roller 43 will be described in order.

  8 shows one embodiment of the outer roller 43, FIG. 8 (a) is a front view as seen from the axial end side, and FIG. 8 (b) is a side view.

  As described above, one end of the rotating shaft 431 of the outer roller 43 is pivotally supported by the gear box 40 of the joining mechanism section 4. The other end portion of the rotating shaft 431 is a cantilevered free end, and the endmost roller is formed as the end roller 5.

  The end roller 5 is formed in a disc shape with the same diameter as the other rollers 432. Further, like the other rollers 432, the end roller 5 is integrally provided around the rotation shaft 431 so as not to rotate. The interval between the adjacent roller 432 and the end roller 5 corresponds to the interval between the ribs 103 to 103 of the belt-like body 100 and is formed with a width that can be inserted between the ribs 103 and 103. The difference from the roller 432 is that the end roller 5 is provided with individual rotating means.

  In the form shown in FIG. 8, the end roller 5 has a large number of bearings 51... 51 arranged on the outer peripheral surface in the circumferential direction as rotating means. The bearings 51... 51 are ball bearings rotatably provided on the outer peripheral surface of the end roller 5.

  That is, as described above, the outer roller 43 is paired with the inner roller 42 and rotates in directions opposite to each other, and the belt-like body 100 is sandwiched and sent out. At this time, the end roller 5 acts by contacting the outer surface of the belt-like body 100 (the outer surface of the lining pipe 130) and the inner wall of the existing pipe 200 by the action of the bearing 51. Both rotational forces in directions opposite to the rotational force are allowed.

  As a result, as shown in FIG. 9, when the pipe making apparatus 1 moves around the existing pipe 200 and the joining mechanism portion 4 reaches the vicinity of the pipe bottom, the outer roller 43 moves to the inner wall of the existing pipe 200 and the lining pipe 130. It smoothly enters between the outer surface of the (band-like body 100). Therefore, even if the outer roller 43 contacts the inner wall of the existing pipe 200, the rotation is not suppressed, and the outer roller 43 can move around while rotating smoothly. As a result, even in a portion where the outer roller 43 and the inner wall of the existing pipe 200 interfere with each other, the driving of the joining mechanism portion 4 and the pinch roller 41 is not stopped, and the lining pipe 130 can be smoothly produced.

  Further, the rotating means provided in the end roller 5 is not limited to the bearing 51, and may be a gear mechanism as exemplified in FIGS. FIG. 10 shows another embodiment of the outer roller 43, FIG. 10 (a) is a front view of the end roller viewed from the axial end side, and FIG. 10 (b) is a side view of the outer roller. is there. 11 shows still another embodiment of the outer roller 43, FIG. 11 (a) is a front view of the end roller, and FIG. 11 (b) is a side view of the outer roller.

  In the outer roller 43, the end roller 5 is provided with a rotating means, and a set of gear mechanisms 52 that mesh with each other is pivotally supported as the rotating means. As shown in FIG. 10, a gear 521 is provided on the front end surface of the end roller 5 so as to support the rotating shaft 52 a arranged in the vertical direction and rotate while meshing with each other. As a result, the rotation force acting by contacting the outer surface of the strip-shaped body 100 by the rotation of one gear 521 and the rotation of the other gear, and the rotation force acting by contacting the inner wall of the existing pipe 200. Both rotational forces in opposite directions are allowed.

  As shown in FIG. 11, the gear mechanism 52 is provided with four rotation shafts 52 a that are evenly arranged on the front end surface of the end roller 5. Two sets of gear mechanisms are arranged on these rotary shafts 52a... 52a so as to cross each other. Also, one gear 522, 522 of the gear mechanism 52 is provided closer to the end than the other gear 521, 521 set.

  In this case, it becomes possible to cope with the opposite rotational forces in two different directions, and the rotational restraining force generated regardless of the arrangement form when the joining mechanism portion 4 moves around the existing pipe 200. Transmission is prevented and the outer roller 43 can be smoothly rotated.

  Therefore, even when such a gear mechanism 52 is provided in the end roller 5, even if the outer roller 43 and the inner wall of the existing pipe 200 interfere with each other, it is possible to prevent rotational resistance, and the joining mechanism portion. 4 and the pinch roller 41 can be smoothly produced without stopping the driving of the pinch roller 41.

  Next, a construction procedure for rehabilitating the existing pipe 200 using the pipe making apparatus 1 will be described.

  As shown in FIG. 1, the existing pipe 200 buried in the ground is provided with manholes 201 and 202 for each predetermined span, and the lining pipe is formed in the existing pipe 200 by using these manholes 201 and 202. 130 is manufactured. The lining pipe 130 is formed from the starting side manhole 201 of the existing pipe 200 toward the arrival side manhole 202.

  First, as a preparation before construction, a winding drum 91 with a turntable around which a strip 100 is wound, a generator 92, a hydraulic unit 93, and the like are prepared. The winding drum 91 is installed on the ground on the start side manhole 201 side, and the generator 92 is installed on the ground on the arrival side manhole 202 side. Moreover, the pipe making apparatus 1 and the hydraulic unit 93 are installed by being carried through the start side manhole 201 to the upstream end portion in the existing pipe 200 to be rehabilitated. At that time, the pipe making apparatus 1 can disassemble and carry the molding frame 2 provided with the guide roller 3, the stiffening frame 29 connected to the joining mechanism portion 4, and the like, and assemble them in the existing pipe 200. The pressure oil hose from the hydraulic unit 93 is connected to the hydraulic motor 45 of the joining mechanism portion 4 of the pipe making apparatus 1.

  In addition, about the shaping | molding flame | frame 2, the connection of a pair of adjacent link bodies 21 and 21 is removed, a plurality of link bodies 21 are carried in one row, and a pair of adjacent link bodies 21 and 21 are connected again. Thus, it is preferable to form a substantially annular shape. In addition, the pipe making apparatus 1 adjusts the peripheral length of the forming frame 2, that is, the number of link bodies 21 to be connected, in accordance with the required diameter of the lining pipe 130. The pipe making apparatus 1 is adjusted so as to have a spiral pitch corresponding to the inner diameter of the existing pipe 200 to be rehabilitated and the width of the band-like body 100 to be used.

  When such preparatory work is completed, the belt-like body 100 is pulled out from the inner peripheral side of the winding drum 91 placed on the ground, and drawn into the existing pipe 200 through the starting side manhole 201, and the joining mechanism portion in the pipe making apparatus 1 4 is inserted into the pinch roller 41 and sent to the outside of the guide roller 3 provided on the molding frame 2.

  Subsequently, the pipe making apparatus 1 is rotated around the axis of the existing pipe 200 in a state where the band 100 fed to the outside of the guide roller 3 is sandwiched between the inner face of the existing pipe 200, and the band 100 is formed into a molding frame. 2 is wound several times (1 to 3 times) to produce a lining pipe 130 for starting pipe making. When the pipe making apparatus 1 (joining mechanism part 4) moves around, the joining convex part 101 of the succeeding spiral strip 100 is inserted into the joining concave part 102 of the preceding spiral strip 100 from the inner peripheral side. At the same time, the inclined pieces 108 of the strips 100 and 100 adjacent to each other and the substantially T-shaped tips of the ribs 103 are locked to join the adjacent spiral strips 100 and 100 to each other.

  After the start lining pipe is manufactured, the joining mechanism section 4 of the pipe manufacturing apparatus 1 is driven. Thereby, the hydraulic motor 45 of the joining mechanism part 4 is rotationally driven to rotate the pinch roller 41, and the belt-like body 100 is sandwiched and sent out. Further, the joining mechanism portion 4 revolves (revolves) along the belt-like body 100 relatively in the direction opposite to the feeding direction.

  At this time, the belt-like body 100 that is relatively fed along the forming frame 2 and the guide rollers 3... 3 that move around by the rotation of the pinch roller 41 so as to be adjacent to the starting lining pipe is shown in FIG. As shown in FIG. 5, the joint convex portion 101 is fitted into the joint concave portion 102 of the belt-like body 100 of the starting lining tube from the inner peripheral side. Further, the pinch roller 41 engages the rib 103 and the inclined piece 108 and joins the adjacent spiral strips 100 and 100 together to manufacture the lining pipe 130.

  The pinch roller 41 of the joining mechanism unit 4 rotates around the inner surface of the existing pipe 200 while joining the spiral belt body 100 following the preceding spiral belt body 100 to form the lining pipe 130. To go. Thereby, the pipe making apparatus 1 pipes the strip 100 to the lining pipe 130 and moves (revolves) in the circumferential direction and moves toward the reaching side manhole 202 at that time.

  At this time, as shown in FIG. 8, even if the outer roller 43 of the pinch roller 41 contacts the inner wall of the existing pipe 200 at the end roller 5, the outer roller 43 and the inner roller 42 are not affected by the influence. The rotation is maintained, the circular movement can be continued while maintaining a constant speed, and the pipe making operation can be performed without applying an excessive load to the outer roller 43.

  When the pipe production of the lining pipe 130 is completed over the entire length of the construction target area (rehabilitation area) of the existing pipe 200, the strip 100 at the pipe end of the lining pipe 130 is cut, and then the pipe production apparatus 1 is disassembled, The pipe making apparatus 1 and the hydraulic unit 93 are removed.

  In addition, in this invention, the strip | belt shaped object 100 is not limited to the said form, For example, a form as shown to Fig.12 (a) and FIG.12 (b) may be sufficient. The belt-like body 100 is formed by molding a synthetic resin (for example, hard vinyl chloride, polyethylene, polypropylene, etc.) in a long shape, and a plurality of ribs 113.. 113 are formed along the longitudinal direction. Side edges are connected to each other using a strip-shaped connector 140.

  That is, the joint recessed part 112 is formed in the both-sides edge part of the strip | belt-shaped body 100 along a longitudinal direction, respectively. Further, the connector 140 is formed with two joint convex portions 141 that can be joined to the joint concave portion 112 of the strip 100 in parallel to each other along the longitudinal direction.

  The belt-like body 100 having such a structure is spirally wound by the pipe making device 1 in a state where one of the joint convex portions 141 of the connector 140 is fitted into one of the joint concave portions 112 and 112 on both side edges. Turned to form the lining tube 130. In the winding process, as shown in FIGS. 12 (a) and 12 (b), of the two adjacent strips 100, 100, the joining strip 112 of one strip 100 has the other strip. By fitting the joint convex portion 141 of the connector 140 fitted into the joint concave portion 112 from the inside (the inside of the already wound belt-like body 100), the adjacent belt-like bodies 100, 100 are mutually connected. It can be joined.

  Further, the present invention is not limited to the pipe making apparatus 1 used for the existing pipe 200 having a circular cross section as described above, but also to the pipe making apparatus 1 corresponding to the existing pipe 200 having various cross sectional shapes such as a rectangular cross section and a horseshoe cross section. Can be applied similarly, and smooth rotation of the outer roller can be promoted. In the above embodiment, the hydraulic motor 45 is employed as a drive source for the joining mechanism unit 4. However, an electric motor, a hydraulic motor, or the like may be used, and is not particularly limited.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a pipe manufacturing apparatus for manufacturing a lining pipe that regenerates an existing pipe such as an aged sewer pipe, a water pipe, an agricultural water pipe, a gas pipe, etc. with a strip.

DESCRIPTION OF SYMBOLS 1 Pipe making apparatus 2 Forming frame 21 Link body 3 Guide roller 4 Joining mechanism part 40 Gear box 42 Inner roller 43 Outer roller 45 Hydraulic motor 46 Gear mechanism 47 Support wheel 5 End roller 51 Bearing 52 Gear mechanism 91 Winding drum 92 Power generation Machine 93 Hydraulic unit 100 Strip body 101 Joint convex part 102 Joint concave part 103 Rib 108 Inclined piece 110 Reinforcement material 130 Lining pipe 200 Existing pipe

Claims (4)

Continuously supplying a long band-like body having joints formed on both side edges in the width direction, and winding the band-like bodies in a spiral manner, the joints of the adjacent band-like bodies are mutually connected by winding. A pipe making apparatus for joining and forming a lining pipe in an existing pipe,
A molding frame installed inside the existing pipe and moving around along the inner surface of the existing pipe;
A joining mechanism portion that is provided in the molding frame so as to move around along the inner surface of the existing pipe together with the molding frame, and joins the joint portion of the wound belt-like body and the joint portion of the newly supplied belt-like body. With
In this joining mechanism portion, an inner roller and an outer roller for sandwiching the belt-like body from the inner surface side and the outer surface side thereof are arranged along the tube axis direction of the existing pipe through respective one end portions. The other end of the outer roller is provided with a rotating means for allowing both the rotational force generated when the outer roller contacts the outer surface of the belt-like body and the rotational force generated when the outer roller contacts the inner wall of the existing pipe. An end roller is provided on a roller shaft that supports the outer roller. The pipe making apparatus according to claim 1,
The end roller is rotatably supported by a roller shaft of an outer roller, and the rotating means is a large number of bearings arranged on the outer peripheral surface of the end roller. The pipe making apparatus according to claim 1,
The end roller is provided with a gear mechanism composed of a pair of gears meshing with each other as rotating means, and the gear mechanism is in contact with the outer surface of the belt-like body and the inner wall of the existing pipe so that the gears rotate in opposite directions. A characteristic pipe making device. In the pipe manufacturing apparatus of Claim 3,
The end roller includes a plurality of gear mechanisms, and is arranged in a direction intersecting each other.

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