JP2005022395A - Tube winding drum - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a regenerating tube winding drum on which a regenerating tube can be spirally wound side by side and which suppresses a crease of the regenerating tube during winding, the regenerating tube being used for regenerating a pipe line and being deformed to have a crooked cross section. <P>SOLUTION: The winding drum 1 is used for winding the regenerating tube thereon for transferring the tube which is used for regenerating the inner surface of the established pipe and is deformed beforehand to have the crooked cross section. The drum comprises a cylindrical body portion 11 on which the regenerating tube is wound and a pair of side plates 12 mounted on both the ends of the cylindrical body portion. An opening portion 13 is provided to insert the tube end portion of the regenerating tube into the cylindrical body portion. A tool is mounted in the cylindrical body portion to fix the tube end portion of the inserted regenerating tube, and a guiding structure is provided to prevent the wound regenerating tubes from overlapping each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a drum for wrapping a rehabilitated pipe that is deformed into a bent cross section and is used to rehabilitate a line by lining an old line.

  Conventionally, as one method for rehabilitating an old pipeline, it is known to line a rehabilitation pipe, that is, a synthetic resin liner, inside the old pipeline. As the rehabilitation pipe used for constructing this rehabilitation method, there is a rehabilitation pipe in which the outer diameter is reduced by forming a pipe having a circular cross section and then bending and folding the cross section at a predetermined temperature. In the factory, this rehabilitation pipe is bent and folded, and the outer diameter is reduced, wound around a drum, transported to the construction site, and the rehabilitation pipe whose outer diameter of the bent cross section is reduced. Rewind from the drum and draw it into the old pipeline, and after the drawing is finished, inject and heat a heating medium such as steam to expand the diameter of the rehabilitation pipe to its original circular shape and restore it to the inside of the old pipe as a rehabilitation pipe. To do.

  Among these, in the winding process, the rehabilitated tube folded into a bent cross section has a band shape, but the thickness and width are large, and the tube has a relatively large rigidity, so that the tube is damaged or coiled. It is difficult to orderly and wrap around the shape.

  Conventionally, as a winding drum for a profile used in a rehabilitation pipe, a winding drum having a thread winding shape has been proposed (for example, see Patent Document 1).

  The profile winding drum described in Patent Document 1 is a profile drum in which a strip-like profile formed into a spiral tube by being spirally wound is wound, and a through-hole is formed in the center portion. A pair of disk-shaped side plates arranged in parallel with each other at an appropriate interval, and each side plate so as to hold each side plate at a certain interval. A plurality of connecting rods that are removably attached between the outer peripheral edges of each side plate facing each other with an appropriate interval in the circumferential direction, and inserted into the through holes of each side plate between each side plate The profile is wound by being mounted in a erected state, and includes a trunk that can be pulled out from the through hole of each side plate while the profile is wound. Is profiled for the drum, characterized the door.

  The winding drum described in Patent Document 1 is a profile winding drum used for a rehabilitation pipe. However, this is a rehabilitation pipe folded in a bent cross-section as intended in the present invention, that is, the above-described belt-like shape, but has a large thickness and width, and the pipe is wound around a rehabilitation pipe having a relatively large rigidity. Is not made.

FIG. 9 is an explanatory diagram schematically showing a state in which a rehabilitated tube is started to be wound around a conventional tube winding drum. For example, as seen in the winding drum described in Patent Document 1, this is a case of a tube winding drum that does not consider winding of a rehabilitated tube having a large width, thickness, and rigidity.
In FIG. 9, a conventional tube winding drum A has a barrel portion a around which a tube is wound, and a pair of disk-shaped side plates b arranged in parallel at both ends thereof. An opening c provided for feeding the pipe into the trunk is provided at the trunk end to fix the pipe end at the start of winding. The shape of the opening c is provided in a rectangular shape having sides parallel to the drum axis.

  In this case, when the rehabilitated tube folded in the bent cross section is wound around the drum, the tube does not wind spirally at the start of winding, but tends to be wound linearly first. For this reason, as shown in the drawing, it is difficult to wind the rehabilitated tube wound at a uniform angle in a spiral shape. The rehabilitation pipe is wound so as to overlap locally at the time of winding, and a fold 2a during winding is generated. If the rehabilitation pipe breaks during winding, the rehabilitation pipe may rupture from the bent part during rehabilitation work.

JP-A-10-128849 (pages 1 to 8)

  An object of the present invention is to rehabilitate a rehabilitation pipe used for rehabilitating a pipe line, in which a rehabilitation pipe deformed into a bent cross section can be spirally aligned and wound, and the breakage of the rehabilitation pipe during winding is suppressed. It is to provide a winding drum.

  The present invention has been made to achieve the above-mentioned object, and the invention according to claim 1 has been deformed in advance into a bent cross-section, which is used to redraw the existing pipe inner surface by being drawn into the existing pipe. A winding drum for winding the rehabilitating pipe, comprising: a cylindrical body part around which the rehabilitating pipe is wound; and a pair of side plates provided at both ends of the cylindrical body part. An opening for inserting the pipe end of the rehabilitated pipe is provided in the part, and a jig for fixing the pipe end of the inserted rehabilitated pipe is provided in the cylindrical body, and further winding has started. A drum for winding a tube, characterized in that a guide structure for preventing rehabilitation tubes from overlapping each other is provided.

  According to a second aspect of the present invention, the shape of the opening has a bottom located at a right angle to the drum axis, and a base angle equal to the wrapping angle of the tube toward the axial center of the cylindrical body is provided. 2. The tube winding drum according to claim 1, wherein the tube winding drum has a trapezoidal shape.

  According to a third aspect of the present invention, the end of the cylindrical body has a truncated cone shape whose diameter decreases from the side plate to the center, and the inclined surface of the truncated cone and the center of the cylindrical body are formed. The tube winding drum according to claim 1 or 2, wherein an angle formed by the shaft is the same as a remainder angle of the winding angle.

  The invention according to claim 4 is characterized in that a baffle plate having the same angle as the winding angle of the tube is provided at the end of the cylindrical body portion, starting from the opening. It is a drum for tube winding of any one of -3.

  According to a fifth aspect of the present invention, the end of the cylindrical body has a width substantially the same as the width of the tube and is twice the thickness of the rehabilitated tube than the outer diameter of the cylindrical body. The tube winding drum according to any one of claims 1 to 4, wherein a cylindrical member having a large inner diameter is provided.

  The present invention is configured as described above, and is used for winding to transport a rehabilitated pipe that is drawn into an existing pipe and used to rehabilitate the inner surface of the existing pipe that has been deformed into a bent cross-section in advance. A drum comprising a cylindrical body around which the rehabilitation pipe is wound and a pair of side plates provided at both ends of the cylindrical body, and for inserting the end of the rehabilitation pipe into the cylindrical body. An opening is provided, and a jig for fixing the tube end portion of the inserted rehabilitation pipe is provided in the cylindrical body, and a guide structure for preventing the rehabilitation pipes that have started to be wound from overlapping each other is provided. Since this is a drum for winding a tube, a rehabilitated tube deformed into a bent cross section, that is, a rehabilitated tube that is strip-shaped but has a large thickness and width and relatively large rigidity, To overlap locally Without wrap around, it is possible to wind aligned spirally, it is possible to provide a winding drum for suppressing rehabilitating pipe breakage of the rehabilitating pipe in the winding.

  The present invention provides an induction structure that prevents the wrapping of a rehabilitation pipe deformed into a bent cross section for lining a pipe, that is, a retreading pipe having a large width, thickness, and rigidity, from being overlapped locally. It is intended to be wound in a spiral arrangement.

  The bent-section rehabilitation pipe used in the present invention is made of a material that can have appropriate flexibility and elasticity at room temperature, such as vinyl chloride resin, chlorinated vinyl chloride resin, polyethylene, and polypropylene. .

  A method for manufacturing a rehabilitated tube having a bent cross section using the tube winding drum of the present invention will be described (not shown). The resin pipe having a circular cross section that has been extruded and passed through the mold by the extruder is cooled by a cooling device and fed forward by a take-up device. The resin pipe formed into a circular cross section is reheated to a predetermined temperature and deformed from the circular cross section into a bent cross section that can be inserted into the pipe.

  In this case, in order to prevent the circular rehabilitation of the rehabilitation pipe and the whitening of the rehabilitation pipe, the surface temperature when the rehabilitation pipe is folded is in the range from the glass transition temperature of the resin constituting the rehabilitation pipe to the glass transition temperature + 40 ° C. Adjusted.

  The outer diameter of the drum body is preferably 500 mm to 3000 mm. If it is too small, the synthetic resin tube breaks during winding or the winding force becomes too large. Moreover, since the outer diameter of a wound product will become large when too large, a problem arises by transportation.

  The deformation process to the bent cross section is performed using a method of sequentially passing the forming roll and the backup roll. In order to hold the rehabilitated tube in a bent cross section, it passes through a device that takes up while holding down until it is allowed to cool, is sent to a tube winding drum, and is wound around it.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited only to the following embodiments.
FIG. 1 is an explanatory view schematically showing a tube winding drum according to the present invention (when the opening is trapezoidal).

  In FIG. 1, a tube winding drum 1 has a cylindrical body portion 11 around which a tube is wound, and a pair of disk-shaped side plates 12 arranged in parallel at both ends thereof. The cylindrical body end is provided with an opening 13 provided for feeding the pipe into the cylindrical body in order to fix the tube end at the beginning of winding. This shape is provided in a trapezoidal shape having a base located at a right angle to the drum axis and having the same base angle θ as the spiral winding angle of the tube toward the center of the cylindrical body. Metal, synthetic resin, or the like is used as the material of the cylindrical body 11 and the side plate 12 around which the tube is wound, but steel is desirable from the standpoint of strength and the like.

  In order to fix the tube end at the beginning of winding, a tube end fixing jig is provided in the body portion. Examples of the fixing jig include a tool that clamps and fixes the tube end, and a device that hooks and fixes a part of the tube end.

FIG. 2 is an explanatory diagram schematically showing a state in which the rehabilitation pipe is started to be wound around the pipe winding drum of FIG. 1.
In FIG. 2, the rehabilitation pipe 2 having a bent cross section is started to be spirally wound around the cylindrical body 11 of the pipe winding drum 1 at a winding angle θ. The rehabilitated tube 2 having a refracting cross section has a tube end fixed to a tube end fixing jig in the cylindrical body at the beginning of winding, and a trapezoidal opening 13 having a base angle θ equal to the spiral winding angle θ of the tube. Is wound around the surface of the body portion 11 along the oblique side. The tube winding drum 1 is driven by a hydraulic motor (not shown) or the like around the center axis shown in the drawing and rotates, so that the tube is wound at a spiral winding angle θ. It is wound up while moving 2.

  The value of the base angle θ of the trapezoidal shape of the opening 13, that is, the value of the spiral winding angle θ of the tube, is determined by the size of the outer periphery of the cylindrical body 11 of the tube winding drum 1 and the width of the belt-shaped rehabilitation tube 2. When the tube is wound regularly with some wrapping, it is determined by the size of the outer periphery of the body 11 and the width of the rehabilitation tube 2 after subtracting the lapping margin. As a magnitude | size of (theta), 1-30 degrees is desirable normally. If it is too small, it is necessary to increase the outer diameter of the wound product, which causes problems in transportation. If it is too large, it is not desirable because the rehabilitated tube 2 becomes slippery on the outer periphery of the cylindrical body 11.

  The rehabilitation pipe 2 folded into a refracting cross section is a strip having a large thickness and width and relatively large rigidity, but the wound rehabilitation pipe is coiled without overlapping locally due to the induction action of the opening 13. In other words, it can be wound with a uniform angle in a spiral. Conventionally, since the rehabilitation pipe 2 is wound so as to overlap locally at the time of winding, local stress is applied, and this causes a fold during winding. I don't get up. Therefore, the rehabilitating pipe 2 is not ruptured from the bent portion during the rehabilitation work.

FIG. 3 is an explanatory view schematically showing a tube winding drum according to the present invention (when the end portion of the body portion has a truncated cone shape).
In FIG. 3, a tube winding drum 1 includes a cylindrical body 11 around which a tube is wound, and a pair of disk-like side plates 12 arranged at both ends at right angles to the center line of the cylindrical body 11. have. The cylindrical body part 11 is a truncated cone-shaped body part end part 14 whose diameter decreases from the side plate to the center. Are the same. In other words, the angle formed between the conical slope and the central axis of the cylindrical body is the same as the remainder of the winding angle.

  A rectangular opening 13a provided to feed the pipe into the trunk is provided at the trunk end so as to fix the pipe end at the start of winding. The shape of the opening may be a trapezoid with a base angle θ shown in FIG. A tube end fixing jig is provided in the body portion.

FIG. 4 is an explanatory view schematically showing a state in which the rehabilitation pipe is started to be wound around the pipe winding drum of FIG. 3.
In FIG. 4, the rehabilitated tube 2 having a bent cross section is started to be spirally wound around the truncated cone-shaped body end portion 14 of the tube winding drum 1 at a winding angle θ. At the beginning of winding, the rehabilitation pipe 2 having a refracting cross section is fixed to a pipe end fixing jig in the cylindrical body, and starts to be wound around the surface of the truncated cone-shaped body end 14 from the opening 13a. . As in the case of FIG. 2, the tube winding drum 1 is driven by a traverse so that it is driven and rotated around a center axis shown in the figure by a hydraulic motor (not shown) or the like and wound at a spiral winding angle θ of the tube. It is wound up while moving the rehabilitation pipe 2 having a bent cross section in the axial direction.

  The angle between the inclined surface of the truncated cone-shaped body end 14 and the central axis of the cylindrical body is the same as the remainder of the winding angle, but the value of the helical winding angle θ of this tube is as shown in FIG. As in the case of 1 to 30 °, it is usually desirable. If it is too small, it is necessary to increase the outer diameter of the wound product, which causes problems in transportation. If it is too large, it is not desirable because the rehabilitated tube 2 becomes slippery on the outer periphery of the cylindrical body 11.

  The rehabilitation pipe 2 folded into a refracting cross section is a strip having a large thickness and width and relatively large rigidity, but it overlaps locally due to the induction action at the start of winding of the truncated cone-shaped body end 14. In addition, the rehabilitation tube can be wound at an angle in a spiral. For this reason, there is no occurrence of folding during winding.

FIG. 5 is an explanatory view schematically showing the tube winding drum of the present invention (when a baffle plate is provided at the end of the body).
The tube winding drum 1 shown in FIG. 5 is provided with a baffle plate 15 having an angle equal to the tube winding angle θ starting from the opening 13 a at the end of the cylindrical body 11. In this case, the angle of the baffle plate 15 is an angle formed with respect to a reference line (two-dot chain line) on the surface of the cylindrical trunk portion 11 parallel to the center line of the cylindrical trunk portion 11 (one-dot chain line in the figure).

  In FIG. 5, the tube winding drum 1 includes a cylindrical body portion 11 around which a tube is wound, and a pair of disk-shaped side plates 12 arranged in parallel at both ends thereof. The opening 13a is provided for feeding the tube into the cylindrical body portion in order to fix the tube end at the beginning of winding. The shape of the opening may be a trapezoid with a base angle θ shown in FIG. A tube end fixing jig is provided in the body portion.

  As for the height from the surface of the cylindrical trunk | drum 11 of the baffle plate 15, about 0.5 to 1.5 times the thickness of a rehabilitation pipe | tube is normally used. If it is too small, the rehabilitation tube may get on the baffle plate and will not function as a guiding structure. Moreover, when too large, it will become trouble at the time of the pipe end fixing work. As the material of the baffle plate, the same material as that of the cylindrical body 11 and the side plate 12 around which the tube is wound is used. Metal, synthetic resin, and the like are used, but steel is desirable from the standpoint of strength and the like.

FIG. 6 is an explanatory view schematically showing a state in which a rehabilitation pipe is started to be wound around the pipe winding drum of FIG.
In FIG. 6, the rehabilitated tube 2 having a bent cross section is started to be spirally wound around the body end 14 of the tube winding drum 1 at a winding angle θ. The rehabilitating tube 2 having a refracting cross section has its tube end fixed to a tube end fixing jig in the cylindrical body, and starts to be wound around the surface of the cylindrical body 11 from the opening 13a. Since the baffle plate 15 having the same angle as the tube winding angle θ is provided at the end portion of the cylindrical body portion 11 with the opening portion 13a as a starting point, the rehabilitated tube extends along the end portion of the baffle plate 15. The rehabilitating tube can be wound with a uniform angle in a spiral shape without overlapping at the local area by the guiding action of the baffle plate 15. For this reason, there is no occurrence of folding during winding.

FIG. 7 is an explanatory view schematically showing the tube winding drum of the present invention (when a cylinder is provided at the end of the body).
In FIG. 7, a tube winding drum 1 includes a cylindrical body portion 11 around which a tube is wound, and a pair of disk-shaped side plates 12 arranged at both ends at a right angle to the center line of the tubular body portion 11. have. At the end of the cylindrical body 11 inside the cylinder 16 at the end of the body, a rectangular opening 13a provided for feeding the tube into the body is provided in order to fix the tube end at the start of winding. ing. The shape of the opening may be a trapezoid with a base angle θ shown in FIG. A tube end fixing jig is provided in the body portion.

  The tube winding drum 1 of FIG. 7 has a width substantially the same as the width of the regenerated tube 2 at the end of the tubular body 11 and the thickness of the regenerated tube 2 is larger than the outer diameter of the tubular body 11. Is provided with a cylindrical member having an inner diameter that is twice as large as that of the cylindrical member 16, that is, a cylinder 16 at the end of the trunk. The width of the cylinder 16 at the end of the trunk is preferably a value obtained by adding −10 mm to 10 mm to the width of the rehabilitation pipe 2. If it is too small, the tubes in the second lap will overlap. If it is too large, it will be difficult to wind.

  The inner diameter of the cylinder 16 at the end of the body part may be set so as to have some clearance when the rehabilitation pipe 2 is wound around the cylindrical body part 11. That is, the inner diameter of the cylinder 16 at the end of the body portion may be larger than the outer diameter of the cylindrical body portion 11 by an amount corresponding to the clearance of the rehabilitation pipe 2 in consideration of the clearance (usually 10 mm or less). . If the clearance is taken into account, the tube in the second round will overlap if it is too large.

  Further, the cylinder 16 at the end of the body portion may have a split structure so that the tube end can be easily fixed at the beginning of winding of the rehabilitated tube, and after the tube end is fixed, the cylinder 16 may be fixed with a connector.

FIG. 8 is an explanatory view schematically showing a state in which a rehabilitation pipe is started to be wound around the pipe winding drum of FIG.
In FIG. 8, the rehabilitated tube 2 having a bent cross section is started to be wound around the end of the body portion of the tube winding drum 1. The rehabilitating tube 2 having a refracting cross section has its tube end fixed to a tube end fixing jig in the cylindrical body, and starts to be wound around the surface of the cylindrical body 11 from the opening 13a. The cylinder 16 at the end of the barrel portion, which has been split in advance, is fixed to the end portion of the cylindrical barrel portion 11 with a connector after fixing the tube end of the rehabilitation pipe.

  Since the pipe which has started to wind out from the opening 13a and is wound around the surface of the cylindrical body 11 is covered with the cylinder 16 at the end of the body, the rehabilitated pipe is the cylinder 16 ( In other words, the rehabilitating tube can be wound with a uniform angle in a spiral shape after exiting the cylinder 16 at the end of the trunk without overlapping at the local part by the guiding action of the guiding structure. For this reason, there is no occurrence of folding during winding.

  In the present invention, after a rehabilitation pipe deformed into a bent cross section is used to rehabilitate the pipe lined on an aging pipe, the rehabilitation pipe is aligned in a spiral form without damage after being formed at the factory. It can be usefully utilized as a tube winding drum that can be wound. The wound rehabilitation pipe is transported to the construction site, pulled back into the old pipeline, and after completion of the drawing, a heating medium such as steam is injected and heated to expand and restore the rehabilitation pipe to its original circular shape. It can be lined as a rehabilitation pipe on the inner surface of an old pipe.

It is explanatory drawing which shows schematically the drum for tube winding of this invention (when an opening part is trapezoid). It is explanatory drawing which shows schematically the state which started winding the rehabilitation pipe | tube on the drum for pipe | tube winding of FIG. It is explanatory drawing which shows schematically the drum for tube winding of this invention (when a trunk | drum edge part is truncated cone shape). It is explanatory drawing which shows roughly the state which started winding the rehabilitation pipe | tube on the drum for pipe | tube winding of FIG. It is explanatory drawing which shows the drum for tube winding of this invention schematically (when notch baffle is provided in the trunk | drum edge part). It is explanatory drawing which shows roughly the state which started winding the rehabilitation pipe | tube on the drum for pipe | tube winding of FIG. It is explanatory drawing which shows schematically the drum for tube winding of this invention (when a cylindrical member is provided in the trunk | drum part edge part). It is explanatory drawing which shows roughly the state which started winding the rehabilitation pipe | tube on the drum for pipe | tube winding of FIG. It is explanatory drawing which shows roughly the state which started winding the rehabilitation pipe | tube on the drum for conventional tube winding.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pipe winding drum 11 Cylindrical trunk | drum 12 Side plate 13 Opening part 14 Frustum-shaped trunk | drum end part 15 Notch baffle plate of trunk | drum end part 16 Cylinder of trunk | drum end part 2 Rehabilitation pipe of bending cross section θ Winding angle

Claims (5)

  A winding drum for winding a rehabilitation pipe that has been drawn into an existing pipe and used to rehabilitate the existing pipe inner surface and that has been deformed into a bent cross-section in advance, and is wound around the rehabilitation pipe A rehabilitating tube comprising a body part and a pair of side plates provided at both ends of the tubular body part, provided with an opening for inserting a tube end portion of the rehabilitation pipe into the tubular body part, and inserted A drum for winding a tube, wherein a jig for fixing the tube end portion of the tube is provided in the cylindrical body portion, and a guide structure for preventing the rehabilitated tubes that have started winding from overlapping each other is provided.   The shape of the opening is a trapezoidal shape having a base located perpendicular to the drum axis and having a base angle equal to the winding angle of the tube toward the axial center of the cylindrical body. The tube winding drum according to claim 1.   The end portion of the cylindrical body portion has a truncated cone shape whose diameter decreases from the side plate to the center, and the angle formed by the inclined surface of the truncated cone shape and the central axis of the tubular body portion is a remainder angle of the winding angle. The tube winding drum according to claim 1 or 2, wherein the drum is a tube winding drum.   The baffle plate of the same angle as the winding angle of a pipe | tube is provided in the edge part of the said cylindrical trunk | drum from the said opening part as the starting point, The any one of Claims 1-3 characterized by the above-mentioned. Tube winding drum. A cylindrical member having an inner diameter that is substantially the same as the width of the tube and having an inner diameter that is twice as large as the thickness of the rehabilitation pipe than the outer diameter of the cylindrical body is provided at the end of the cylindrical body. The tube winding drum according to any one of claims 1 to 4, wherein the tube winding drum is provided.

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