WO2011013636A1 - 製管機及び製管方法 - Google Patents
製管機及び製管方法 Download PDFInfo
- Publication number
- WO2011013636A1 WO2011013636A1 PCT/JP2010/062565 JP2010062565W WO2011013636A1 WO 2011013636 A1 WO2011013636 A1 WO 2011013636A1 JP 2010062565 W JP2010062565 W JP 2010062565W WO 2011013636 A1 WO2011013636 A1 WO 2011013636A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- synthetic resin
- making machine
- pipe making
- roller
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1655—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section a pipe being formed inside the old pipe by winding strip-material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/30—Lining or sheathing of internal surfaces using sheet or web-like material
- B29C63/32—Lining or sheathing of internal surfaces using sheet or web-like material by winding helically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
Definitions
- the present invention relates to a pipe making machine for regenerating a pipe inner surface by spirally winding a synthetic resin strip in various existing pipes such as an agricultural water pipe, a sewer pipe, a water pipe, and a gas pipe, and the pipe making
- the present invention relates to a pipe making method using a machine.
- This type of method uses a synthetic resin strip having joints on both side edges, and spirally wraps this synthetic resin strip in an existing pipe to form a rehabilitation pipe for lining.
- a transport drum around which a synthetic resin strip is wound is installed on the ground, a pipe making machine is arranged in an existing pipe, and the synthetic resin strip is continuously connected from the transport drum to the pipe making machine.
- a method is described in which the joint portions of the adjacent strips made of synthetic resin are joined to each other by being spirally wound and wound to form a tubular shape.
- the formed rehabilitation pipe is left as it is in the existing pipe, and a new synthetic resin strip is supplied, wound and joined, so that rehabilitation pipes are additionally formed.
- the conventional pipe making machine 300 has a joining mechanism portion that joins the annular frame 310 on which a plurality of rollers 320 are pivotally supported and the joining portions at both side edges of the synthetic resin strip 600. 330.
- the joining mechanism part 330 includes an outer roller 331 and an inner roller 332, sandwiches the synthetic resin belt-like body 600, and joins the joining part to form a tubular shape.
- the pipe making machine 300 moves around along the inner surface of the existing pipe 200 by the reaction of sending the synthetic resin belt-like body 600 from the joining mechanism section 330.
- the outer roller 331 may be caught by these irregularities.
- the outer roller 331 cannot be smoothly rotated, and it is difficult for the joining mechanism portion 330 to move around.
- the fluid in the pipeline may be blocked or diverted, which affects the traffic on the ground, so work is completed in as short a time as possible, and work accurately and safely. Is required.
- the pipe making operation is interrupted, and the outer roller must be repaired or replaced so that it rotates smoothly. In other words, the working time is prolonged.
- the labor required for the pipe making operation using the synthetic resin strip is reduced as much as possible, and a highly accurate and highly accurate rehabilitation pipe is formed in a short time, and the safety is high. It aims at providing the pipe making machine which enables pipe making work, and the pipe making method of the rehabilitation pipe
- the solution of the present invention for achieving the above object is directed to a pipe making machine for forming a rehabilitation pipe using a synthetic resin strip.
- tube are provided.
- belt body is a long material which equips a both-sides edge part of the width direction with a junction part, is wound spirally, and adjacent junction parts are joined by the said joining mechanism part, and become a tubular shape.
- the frame includes a plurality of rotatable rollers and can circulate along the inner surface of the existing pipe.
- the joining mechanism portion includes an inner roller and an outer roller that are provided on the frame and sandwich the synthetic resin strip from the inside and the outside.
- the said support body can rotate in contact with the inner surface of the existing pipe, and is provided with a rotation shaft at a position different from each rotation shaft of the inner roller and the outer roller. And while the said frame and the said joint mechanism part rotate around the inner surface of an existing pipe, the said support body contacts the inner surface of the existing pipe, and the state which separated the said outer roller from the inner surface of the existing pipe It can be maintained.
- Such specific matters can prevent the outer roller of the joining mechanism portion from being caught by deposits, cracks, or irregularities on the inner surface of the existing pipe. Therefore, the outer roller and the inner roller can be smoothly rotated, and the synthetic resin strip can be efficiently formed into a tubular shape without stopping the operation of the joining mechanism. In addition, since the joining mechanism portion operates smoothly, the synthetic resin belt-like body is not loosened, and the phenomenon that the rehabilitation pipe gradually rolls up can be avoided. Furthermore, since the outer roller is not required to be repaired or replaced, the pipe making operation can be completed in a short time.
- the frame is composed of a plurality of link bodies and can be deformed into an arbitrary outer shape. Further, it is preferable that the frame is provided with a connection frame that couples the joining mechanism portion to the link body while maintaining a certain angle.
- the connecting frame supports the joining mechanism portion on the inner surface of the existing pipe together with the support.
- the joining mechanism portion is supported by the connecting frame so as to keep the distance between the outer roller and the inner surface of the existing pipe, and the outer roller can be further smoothly rotated. .
- the supports are provided on both the front and rear sides in the rotation direction of the outer roller. Therefore, since a support body supports a joining mechanism part in the front and back both sides of the rotation direction of an outer roller, it can be made to circulate more stably.
- the joining mechanism part may be configured to include a drive part and a fitting part. That is, each of the driving unit and the fitting unit includes an inner roller and an outer roller, and the driving unit moves the joint mechanism unit around the inner surface of the existing pipe. Join the joints of the body together.
- the driving unit includes a first part in which the inner roller and the outer roller are newly supplied and the joint part is not joined, and the synthetic resin is joined to the joint part. And a second portion for sandwiching the band-shaped body, and the second mechanism is configured such that the joining mechanism portion moves in a circular motion by a reaction force that the second portion feeds while sandwiching the synthetic resin-made strip-shaped body.
- the synthetic resin strip that is newly supplied to the joining mechanism section is used as the first synthetic resin strip, and the synthetic resin strip that is disposed again at the position of the joining mechanism section by the circular movement is rotated twice.
- the synthetic resin belt-shaped body is an eye
- the synthetic resin belt-shaped body of the first round passes through the driving portion without being sandwiched by the driving portion and is guided to the fitting portion with a stable track by the configuration of the driving portion. It is burned.
- the drive unit feeds out the synthetic resin belt-like body after the second round already wound, from inside and outside while maintaining a constant speed. As a result, the synthetic resin belt-like body to be newly joined does not fluctuate.
- the synthetic resin belt-like body in the second round can be accurately guided to an appropriate position where the synthetic resin belt-like body in the second round can be joined, and the belt is joined while maintaining a constant speed. Therefore, it is possible to form a rehabilitation tube without causing a thickening phenomenon.
- the fitting portion is provided with an inner roller rotatably on a rotation shaft.
- the inner roller of the fitting portion rotates by contact with the synthetic resin strip, and smoothly joins the synthetic resin strip without generating a resistance force with the synthetic resin strip. It acts to join together.
- the frame includes a guide portion that defines a supply path of the synthetic resin belt-like body with respect to the joining mechanism portion inside the frame.
- the guide portion has a plurality of rollers that are paired so as to rotate in contact with the inner side and the outer side of the synthetic resin strip.
- the guide portion includes a curved guide plate and a plurality of rollers that rotate in contact with the synthetic resin belt and hold the synthetic resin belt between the guide plate. May be.
- a pipe making method for forming a rehabilitated pipe from a synthetic resin strip using the pipe making machine having the above configuration is also within the scope of the technical idea of the present invention.
- the pipe making machine is installed in an existing pipe, and is driven in a state in which the joining mechanism is supported on the inner surface of the existing pipe by a support, a synthetic resin strip is supplied to the joining mechanism, and the outer roller is It is set as the pipe making method which joins the junction parts of a synthetic resin strip
- the outer roller of the joining mechanism portion is maintained in a state separated from the inner surface of the existing pipe. Therefore, various inconveniences caused by contact with the inner surface of the existing pipe can be eliminated, and it is possible to efficiently and smoothly manufacture the pipe in a short time without any work. In addition, since a unnecessary force does not act on the synthetic resin belt-like body during pipe making and it can be smoothly supplied and joined, a rehabilitating pipe can be formed with high accuracy.
- FIG.7 (a) is a front view
- FIG.7 (b) is a top view. It is a side view which shows the pinch roller of the joining mechanism part in the said pipe making machine. It is a top view which shows the principal part and wheel of a joining mechanism part in the said pipe making machine. It is explanatory drawing which shows the pipe making method using the pipe making machine which concerns on embodiment of this invention. It is a front view which shows the other form of the pipe manufacturing machine concerning Example 1.
- FIG. is a front view which shows the pipe manufacturing machine which concerns on Example 3.
- FIG.7 (a) is a front view
- FIG.7 (b) is a top view. It is a side view which shows the pinch roller of the joining mechanism part in the said pipe making machine. It is a top view which shows the principal part and wheel of a joining mechanism part in the said pipe making machine.
- It is explanatory drawing which shows the pipe making method using the pipe making machine which
- FIG. 20A is a cross-sectional view showing another example of a synthetic resin strip
- FIG. 20B is a partial perspective view of the joint. It is a front view which shows an example of the conventional pipe manufacturing machine.
- FIG. 1 is an explanatory view schematically showing an example of a pipe making method using the pipe making machine according to the embodiment.
- the traveling direction of the pipe making machine in the pipe line when the rehabilitated pipe is produced by the pipe making machine is assumed to be the front, and the opposite direction is the rear.
- a long synthetic resin strip 100 having joints on both side edges is supplied to the pipe making machine 1 of the existing pipe 200 and is wound spirally by the pipe making machine 1.
- the pipe making machine 1 moves in the axial direction of the existing pipe 200 while producing the pipe while rotating the inner surface of the existing pipe 200 in the circumferential direction.
- FIG. 2 is a cross-sectional view showing an example of a synthetic resin strip
- FIG. 3 is an explanatory view showing how the joint portions of the synthetic resin strip in FIG. 2 are joined
- FIG. It is explanatory drawing which shows the state which joined the synthetic resin strip
- the synthetic resin strip 100 shown in FIG. 2 is formed using a synthetic resin material such as hard vinyl chloride, polyethylene, and polypropylene, and is formed into a long strip having flexibility.
- a joint convex portion 101 and a joint concave portion 102 (joint portion) are formed along the longitudinal direction at both side edges of the synthetic resin strip 100 and are joined to the adjacent synthetic resin strip 100 by fitting. .
- the joint convex part 101 is provided with the support
- the joint concave portion 102 is formed on the side edge portion on the opposite side of the joint convex portion 101, and is formed on the insertion portion 106 having a substantially circular cross section, and on the outer side (upper side in FIG. 2) of the insertion portion 106.
- a flange portion 107 is provided.
- a belt-like soft elastic body such as an elastomer that prevents slippage when the synthetic resin belt-like bodies 100, 100 are joined to each other and adheres to each other may be provided in advance.
- a plurality of ribs 103 ... 103 are erected along the longitudinal direction.
- the tip portions of these ribs 103... 103 are formed in a substantially T-shaped cross section, and are provided with a flange similar to the flange portion 107 of the joint recess 102.
- the synthetic resin strip 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 portion of the inclined piece 108 is substantially T of the rib 103 formed on the side of the joint convex portion 101 when the joint concave portion 102 and the joint convex portion 101 of the adjacent synthetic resin strip 100 are fitted together. Lock to the tip of the letter.
- Such a synthetic resin strip 100 is spirally wound by a pipe making machine 1 to be described later.
- the other synthetic resin strip is placed in the joint recess 102 of one synthetic resin strip 100.
- 100 joint projections 101 are fitted from the inside (inside the already wound synthetic resin strip 100).
- the inclined piece 108 of the synthetic resin strip 100 is pressed and fitted into the tip of the rib 103 of the adjacent synthetic resin strip 100.
- the synthetic resin strips 100, 100 arranged adjacent to each other are joined to each other.
- the reinforcing material 109 is attached to the synthetic resin belt-like body 100.
- the reinforcing material 109 is formed by bending a strip-shaped steel plate into a substantially W-shaped cross section, and is attached between the adjacent ribs 103, 103 of the synthetic resin strip-shaped body 100 to form a rehabilitating pipe 130 formed. Increase the strength of.
- the synthetic resin belt-like body 100 has an increased bonding strength by fitting the bonding convex portion 101 and the bonding concave portion 102 and locking the inclined piece 108 and the rib 103, and also improves the water-stopping property as the rehabilitated tube 130.
- the synthetic resin strip 100 is wound around a transport drum 91, prepared at a construction site, and fed out from the transport drum 91 to an existing pipe 200.
- FIG. 20A is a cross-sectional view showing the synthetic resin strip 100
- FIG. 20B is a perspective view of the joint portion of the synthetic resin strip 100 and the connector 140.
- the synthetic resin strip 100 includes a connector 140 that joins the side edges of adjacent strips.
- the synthetic resin strip 100 is a long body provided with a plurality of ribs 113 on a substrate.
- Concave joints 112 are provided continuously along the longitudinal direction at both side edges of the synthetic resin strip 100. When the side edges of the synthetic resin belt-like body 100 are adjacent to each other by winding, the joint 112 is brought into a convex shape by abutting the two joints 112 and 112.
- the connector 140 includes a pair of joint convex portions 141 and 141.
- the pair of joint protrusions 141 are continuously formed along the longitudinal direction, and are formed corresponding to the shapes of the joints 112 and 112 when the synthetic resin strip 100 is abutted.
- the side edges of the synthetic resin strip 100 are adjacent to each other in the pipe making process, and the connector 140 is fitted over the joints 112 and 112 of the side edges and joined to each other.
- Example 1 Next, a pipe making machine and a pipe making method according to the embodiment will be described.
- the pipe making machine 1 is attached to the frame 2 that is formed by winding a synthetic resin strip 100 around the outer peripheral surface, a plurality of rollers 3 that are rotatably provided on the frame 2, and the frame 2. And a joining mechanism portion 4 that joins adjacent synthetic resin strips 100 together.
- FIG. 5 is a front view showing an example of a pipe making machine
- FIG. 6 is an explanatory view showing an enlarged joining mechanism portion of the pipe making machine of FIG.
- FIG. 6 shows a state in which the joining mechanism portion is located below the existing pipe 200 (tube bottom).
- FIG. 7 shows the link body which comprises the flame
- FIG. 7 (a) is a front view
- FIG.7 (b) is a top view
- FIG. 8 is a side view showing the pinch roller of the joining mechanism part
- FIG. 9 is a plan view of the main part of the joining mechanism part and the wheels.
- the frame 2 of the pipe making machine 1 has an annular shape corresponding to the inner surface shape of the existing pipe 200.
- the frame 2 in the illustrated form includes a plurality of link bodies 21 that are rotatably connected.
- the frame 2 includes a pair of link frames 22 and 23 that are rotatably connected via a shaft portion 24 to form one link body 21.
- the link bodies 21 ... 21 are connected to each other so as to form a substantially ring shape.
- the frame 2 is formed with a depth in the tube axis direction.
- the link frames 22 and 23 constituting each link body 21 include a pair of link plates 221 and 231 facing each other, and connection plates 222 and 232 installed between one end portions of the pair of link plates 221 and 231 facing each other. Is provided. Then, the other end portions of the pair of link plates 231, 231 in the link frame 23 are overlapped with the other end portions of the pair of link plates 221, 221 in the link frame 22, respectively, and are rotatable via the shaft portion 24. By connecting, the link body 21 is formed.
- the adjacent link bodies 21 and 21 are detachably connected to each other by abutting the connection plates 222 or the connection plates 232 of the link frames 22 and 23 together with bolts and nuts. That is, the frame 2 can be disassembled by disconnecting the link body 21, and can be assembled in the existing pipe 200 by connecting this.
- connection plates 222 and 232 of the remaining link bodies 21 are welded or the like. May be non-detachably coupled.
- a rotation restricting piece 26 is provided on each other end of the pair of link plates 221 and 221 of the link frame 22. Further, a notch 27 corresponding to the rotation restricting piece 26 is provided at each other end of the pair of link plates 231 and 231 of the link frame 23.
- the notch 27 is formed over a certain range on a set radius with the rotation center of the shaft 24 as the center. Thereby, the mutual rotation operation of the link frames 22 and 23 is restricted to an angle range until the rotation restricting piece 26 and the notch 27 abut, and the link body 21 bends inward or outward. Is preventing.
- a roller 3 is mounted on each shaft portion 24 of the frame 2 via a bearing 25.
- the plurality of rollers 3 are rotatably supported by the link bodies 21 of the frame 2.
- Each roller 3 is made of, for example, a hard synthetic resin body or a metal body.
- the plurality of rollers 3 provided on the frame 2 come into contact with the inner surface of the wound synthetic resin strip 100.
- the frame 2 is provided with a refractive link 5.
- the refractive link 5 includes link members 51 and 51 whose one ends are rotatably connected to the link frame 23 of the link body 21.
- One end portion of the link body 51 is provided with a rotation restricting piece 52 corresponding to the cutout portion 27 of the link plate 231, and the rotation range of the refractive link 5 with respect to the link body 21 is restricted.
- the refractive link 5 is connected so that the other end parts of the link members 51 and 51 can be rotated in a bent state.
- the refraction link 5 includes link arms 53 and 53.
- the link arms 53 and 53 are pivotally connected at their base ends, and the other ends are pivotally connected to the link members 51 and 51, respectively.
- a screw shaft 54 is screwed to the base end portions of the link arms 53, 53 through a connecting shaft of the link member 51.
- the screw shaft 54 is provided with a handle 55 inside the frame 2.
- the refraction link 5 is not limited to this as long as the bent shape can be opened and closed, and the refraction link 5 is opened and closed by a mechanical action as described above, and can be expanded and contracted by a hydraulic cylinder or air pressure. An air cylinder or the like to be operated may be used.
- connection frame 29 is a frame body that has rigidity and is longer than the link frame 23.
- connection frames 29 and 29 are arranged in a straight line to draw a string through the rollers 3 a and 3 a with respect to the arc-shaped inner shape of the existing pipe 200. That is, one end of the connection frame 29 is connected to the link body 21, and the other end is joined and fixed to both sides of the joining mechanism part 4 at a substantially right angle, and extends in the left-right direction in the figure.
- the connection angle between the joining mechanism portion 4 and each connection frame 29 can be adjusted according to the pipe diameter of the existing pipe 200 by using the attached angle adjusting member 47.
- a feed roller 291 that rotates in contact with the inner surface of the rehabilitating pipe 130 and that smoothly rotates relative to the rehabilitating pipe 130 may be provided in the connection frames 29 and 29 in the intermediate portion. .
- the joining mechanism section 4 is supported by the existing pipe 200 by the connection frames 29 and 29 via the rollers 3a and 3a (and the rehabilitation pipe 130). Thereby, the joining mechanism part 4 is integrated with the frame 2 and is supported in a state separated from the inner peripheral surface of the existing pipe 200 by a certain distance.
- connection frames 29 and 29 form an integral support structure for the joining mechanism portion 4.
- the joining mechanism unit 4 includes a gear box 40. 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. A hydraulic motor 45 is attached to the side of the gear box 40.
- the pinch roller 41 includes an inner roller 42 and an outer roller 43 as a pair, and sandwiches the synthetic resin strip 100 from the inside and the outside. Further, as shown in FIG. 8, the joining mechanism portion 4 is provided with a hydraulic motor 45, and the pinch roller 41 is connected via a gear mechanism 46 in a gear box 40 fixed to the link frame 23 of the link body 21 in the frame 2. Rotate. 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 provided in the gear box 40 via a gear mechanism 46, and are supported in a direction parallel to the tube axis of the existing tube 200.
- the rotation axis of the inner roller 42 and the rotation axis of the outer roller 43 are arranged so that the axial direction is perpendicular to the lead angle to which the synthetic resin strip 100 is supplied in a spiral shape, and the rotation axis is freely rotatable on the gear box 40. It is supported by.
- the hydraulic motor 45 is driven to rotate, the inner roller 42 and the outer roller 43 are connected to each other via a gear mechanism 46 that is fixed to the output shaft 451, the rotation shaft of the inner roller 42, and the rotation shaft of the outer roller 43 and meshes with each other.
- the synthetic resin strip 100 is sandwiched between the inner roller 42 and the outer roller 43 and sent out. That is, the inner roller 42 is rotated by the driving force from the gear mechanism 46. Further, the inner roller 42 and the outer roller 43 have a function of sandwiching and feeding the synthetic resin strip 100 between them.
- the inner roller 42 has a length that is at least twice the width of the synthetic resin strip 100 and is formed in a cylindrical shape by a steel material or the like. Further, the outer peripheral surface of the inner roller 42 is in contact with the smooth inner peripheral surface where the preceding synthetic resin strip 100 and the subsequent synthetic resin strip 100 are joined so that the outer peripheral surface rotates. The diameter is set.
- the outer roller 43 is disposed so that the preceding synthetic resin strip 100 and the subsequent synthetic resin strip 100 are in contact with adjacent joints, and orbits the inner track of the inner surface of the existing pipe 200.
- the outer roller 43 is provided with a plurality of disc-shaped rollers 431... 431 arranged between the ribs 103 to 103 of the synthetic resin strip 100 around the columnar shaft portion 432.
- the roller 431 is formed with a width that can be inserted between the adjacent ribs 103.
- the outer diameter dimensions of the outer roller 43 are set so as to have an appropriate distance between the outer peripheral surface of the outer roller 43 (the outer diameter of the roller 431) and the outer peripheral surface of the inner roller 42 so that the synthetic resin strip 100 is sandwiched between them. Is set.
- a reinforcing material 109 is attached to the synthetic resin strip 100.
- the reinforcing material 109 is formed by bending a strip-shaped steel plate into a substantially W-shaped cross section, and is attached between the adjacent ribs 103, 103 of the synthetic resin strip-shaped body 100 to form the rehabilitating pipe 130 to be formed. Increase strength.
- the roller 431 a corresponding to the space between the ribs 103 and 103 to which the reinforcing material 109 is attached is fitted into the convex portion of the reinforcing material 109 of the synthetic resin strip 100.
- the matching groove 433 may be recessed.
- Such an outer roller 43 rotates while the tip portion of each rib 103 of each synthetic resin strip 100 is in contact with the outer peripheral surface of the shaft portion 432.
- the outer peripheral surface of the outer roller 43 is preferably knurled.
- the outer peripheral surface of the shaft portion 432 is knurled, and the synthetic resin belt-like body 100 (the end portion of the rib 103). Rotate without sliding against.
- an impact absorbing member 401 having a spring 402 is provided outside the gear box 40, and the inner roller 42 and the outer roller 43 are pressed by pressing the outer surface of the gear box 40 due to unevenness of the inner surface of the existing pipe 200. It acts to maintain the mutual distance between the two.
- a support body that rotates in contact with the inner surface of the existing pipe 200 is provided on the side portion of the joining mechanism portion 4.
- the wheel 6 as a support body is provided in the left side of the joining mechanism part 4 in the figure.
- the wheel 6 is attached to the joining mechanism unit 40 via a bracket 61.
- the bracket 61 has a substantially L-shaped cross section and is attached to the front surface of the back plate 63 joined to the side portion of the gear box 40.
- An arm portion 62 extends from the lower portion of the bracket 61, and the wheel 6 is rotatably supported by the arm portion 62.
- the wheel 6 has a larger diameter than the outer roller 43, and a rotation shaft is provided at a location different from the rotation shaft of the outer roller 43.
- the fact that the wheel 6 has a large diameter is not affected by irregularities on the inner surface of the existing pipe 200, and acts to maintain stability.
- providing the rotation shaft of the wheel 6 with a rotation shaft different from the outer roller 43 and the inner roller 42 ensures smooth rotation without imposing a burden on the rotation shaft of the outer roller 43 and the inner roller 42. Contribute to.
- each rotation shaft of the wheel 6 is disposed closer to the inner surface of the existing tube 200 than the rotation shaft of the outer roller 43 in the radial direction of the existing tube 200. Further, the wheel 6 is disposed as close as possible to the center of gravity of the joining mechanism portion 4 with respect to the axial direction (length direction) of the outer roller 43. That is, the wheel 6 is provided close to the gear box 40 and the gear mechanism 46 that support the outer roller 43. Further, the wheels 6 are respectively arranged so that the outer rollers 43 are not in contact with the existing pipe 200 in the circumferential direction of the existing pipe 200.
- the wheel 6 is attached to a back plate 63 that extends to the side of the gear box 40 through a plurality of long holes 61 a provided in the bracket 61.
- the plurality of elongated holes 61a of the bracket 61 make it possible to adjust the mounting height of the wheel 6. That is, as shown in FIG. 6, when a fastening tool is attached near the upper end of each long hole 61a and the bracket 61 and the back plate 63 are coupled, the wheel 6 is supported further downward. On the contrary, when the bracket 61 and the back plate 63 are coupled to each other near the lower end of each long hole 61a, the wheel 6 is supported further upward.
- the mounting height of the wheel 6 can be adjusted, and the joining mechanism portion 4 with respect to the inner surface of the existing pipe 200 can be adjusted.
- the support height can be adjusted.
- the wheel 6 provided in this way rotates in contact with the inner surface of the existing pipe 200 as the joining mechanism unit 4 rotates. Further, since the wheel 6 supports the joining mechanism portion 4 so as to be separated from the inner surface of the existing pipe 200, the wheel 6 acts so as not to contact the outer roller 43 and the inner surface of the existing pipe 200 when the renovated pipe 130 is manufactured. Therefore, the mounting height of the wheel 6 is adjusted according to the state of the inner surface of the existing pipe 200, that is, the occurrence state of deposits and unevenness, so that the outer roller 43 and the inner surface of the existing pipe 200 are not in contact with each other. Can be made.
- the outer roller 43 can be rotated in the radial direction of the existing pipe 200 without contacting the existing pipe 200.
- the connection frames 29, 29 extending on both sides of the joining mechanism portion 4 stably hold the track of the gear box 40 and the wheel 6 with respect to the existing pipe 200.
- the connecting frames 29 and 29 realize an integral support structure with the joining mechanism portion 4 and the support structure is provided with the wheel 6 as a support, the reaction force received from the existing pipe 200 is externally applied. These can be rotated without acting on the rotating shafts of the roller 43 and the inner roller 42. As a result, the load acting on the outer roller 43 is reduced, and it becomes possible to proceed with the pipe making operation extremely efficiently.
- the outer roller 43 is supported in an arrangement form that does not contact the existing pipe 200, the friction force that affects the driving is not generated regardless of the state of the inner surface of the existing pipe 200, and the pipe making is performed. Work can proceed very smoothly.
- the existing pipe 200 buried in the ground is provided with manholes 201 and 202 for each predetermined span.
- the upstream side of the construction target area (rehabilitation area) The rehabilitating pipe 130 is manufactured in the existing pipe 200 using the manhole 201 and the downstream side manhole 202.
- the rehabilitation pipe 130 is formed from the manhole 201 of the existing pipe 200 toward the manhole 202.
- a transport drum 91 with a turntable around which a synthetic resin strip 100 is wound, a generator 92, a hydraulic unit 93, and the like are prepared.
- the transport 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.
- the pipe making machine 1 and the hydraulic unit 93 are carried through the starting side manhole 201 and installed at the upstream end in the existing pipe 200 to be rehabilitated. At that time, the pipe making machine 1 can disassemble and carry the frame 2 provided with the rollers 3, the connecting frame 29 connected to the joining mechanism portion 4, etc., 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 unit 4 of the pipe making machine 1.
- the pair of adjacent link bodies 21, 21 are disconnected, the plurality of link bodies 21 are carried in one row, and the pair of adjacent link bodies 21, 21 are connected again. It is preferable to form it in a substantially annular shape.
- the pipe making machine 1 adjusts the peripheral length of the frame 2, that is, the number of link bodies 21 to be connected, in accordance with the required diameter of the rehabilitation pipe 130.
- the pipe making machine 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 synthetic resin strip 100 to be used.
- the mounting height of the wheel 6 is adjusted so that the outer roller 43 does not contact the inner surface of the existing pipe 200, and the mounting angle of the connecting frame 29 is adjusted by the angle adjusting member 47.
- the synthetic resin belt-like body 100 is pulled out from the inner peripheral side of the transport drum 91 arranged on the ground and pulled into the start-side manhole 201. Furthermore, the synthetic resin strip 100 is drawn into the existing pipe 200, inserted into the pinch rollers 41 (42, 43) of the joining mechanism 4 in the pipe making machine 1, and sent out to the outside of the rollers 3 provided on the frame 2.
- the pipe making machine 1 is rotated around the axis of the existing pipe 200, and the synthetic resin is rotated.
- the band-shaped body 100 is wound around the frame 2 several times (1 to 3 times), and a rehabilitation pipe 130 for starting pipe making is formed. That is, when the pipe making machine 1 (joining mechanism part 4) moves around, the joining convexity of the succeeding spiral synthetic resin strip 100 is brought into the joining recess 102 of the preceding spiral synthetic resin strip 100.
- the portion 101 is inserted from the inner peripheral side, and the inclined pieces 108 of the synthetic resin strips 100 and 100 adjacent to each other and the substantially T-shaped tip end portions of the ribs 103 are engaged with each other, so that the adjacent spiral shapes The synthetic resin strips 100 and 100 are joined to each other.
- the joining mechanism 4 of the pipe making machine 1 is driven.
- the hydraulic motor 45 of the joining mechanism part 4 is rotationally driven to rotate the pinch roller 41, and the synthetic resin belt-like body 100 is sandwiched and sent out.
- the joining mechanism section 4 revolves (revolves) along the synthetic resin strip 100 relatively in the direction opposite to the feeding direction.
- the synthetic resin belt-like body 100 is relatively fed along the frame 2 and the rollers 3... 3 circulated by the rotation of the pinch roller 41 so as to be adjacent to the starting rehabilitation pipe.
- the synthetic resin strip 100 has the joint convex portion 101 fitted into the joint concave portion 102 of the synthetic resin strip 100 of the starting rehabilitation pipe from the inner peripheral side, and the rib 103.
- the inclined piece 108 are engaged with each other, and the joint portions of the adjacent spiral synthetic resin strips 100 are joined together to form the rehabilitation pipe 130.
- the outer roller 43 of the pinch roller 41 is supported at a position separated from the inner peripheral surface of the existing pipe 200 by a predetermined distance and moves around. That is, when the wheel 6 whose bracket 61 has been fixed so as to be in contact with the inner peripheral surface of the existing pipe 200 rolls on the inner peripheral surface of the existing pipe 200, the outer roller 43 of the joining mechanism section 4 is moved. It supports in the state which floated from the internal peripheral surface of the existing pipe
- the joining mechanism portion 4 is integrated with the frame 2 by the connecting frame 29 supported by the existing pipe 200 via the roller 3a and the rehabilitation pipe 130, and is supported in a state separated from the inner peripheral surface of the existing pipe 200. The The outer roller 43 is prevented from contacting the inner peripheral surface of the existing pipe 200. Further, the pinch roller 41 is also stably supported by the action of the shock absorbing member 401.
- the joining mechanism section 4 joins the spiral synthetic resin strip 100 succeeding the preceding spiral synthetic resin strip 100 to produce the rehabilitated pipe 130 along the inner peripheral surface of the existing pipe 200. Move around. That is, the pipe making machine 1 pipes the synthetic resin strip 100 to the rehabilitated pipe 130, moves (revolves) along the inner peripheral surface of the existing pipe 200, and moves toward the reaching side manhole 202. It moves in the axial direction of the existing pipe 200.
- the rehabilitation pipe 130 is arranged in the existing pipe 200 without rotating, and is sequentially formed from the state shown in FIG. 1 to the state shown in FIG. That is, the rehabilitation pipe 130 is further formed into a tubular shape by being supplied with the spiral synthetic resin strip 100, and the rehabilitation pipe 130 is additionally formed in the axial direction toward the arrival side manhole 202 side.
- the synthetic resin strip 100 at the end of the rehabilitated pipe 130 is cut, and then the pipe making machine 1 is The pipe making machine 1 and the hydraulic unit 93 are removed. Since the frame 2 is formed by connecting a plurality of link bodies 21 to each other, the frame 2 is connected to one row of the link bodies 21 by disconnecting a pair of adjacent link bodies 21 and 21. Can be removed as.
- the pipe making machine 1 has a configuration in which a guide portion 7 is further provided so that the synthetic resin strip 100 supplied to the joining mechanism portion 4 passes through a certain path. Also good.
- FIG. 11 is a front view illustrating an example of the pipe making machine 1 including the guide unit 7.
- the synthetic resin strip 100 is drawn from the inner peripheral side of the take-up drum 91 placed on the ground, drawn into the existing pipe 200, and introduced into the joining mechanism unit 4.
- the guide portion 7 By keeping the supply path for 4 constant by the guide portion 7, it is possible to make the pipe making work more stably.
- the guide portion 7 has a pair of regulating rollers 71 and 72 that are disposed inside the frame 2 and rotate in contact with the inner side and the outer side (front surface and back surface) of the synthetic resin strip 100, respectively.
- the regulation rollers 71 and 72 are rotatably supported by a frame (not shown), and a cylindrical inner roller 71 that contacts the flat surface of the synthetic resin strip 100 and a rib surface of the synthetic resin strip 100. It is formed by a pair with an outer roller 72 that rotates in contact therewith.
- the pair of the regulation rollers 71 and 72 is not limited to one set, and by providing a plurality of sets on the frame 2, the supply path of the synthetic resin strip 100 can be defined. Thereby, it is possible to prevent a force that prevents the pull-in from acting on the synthetic resin strip 100, and the synthetic resin strip 100 can be smoothly supplied to the pinch roller 41 at a constant feed rate. it can. As a result, the joints of the synthetic resin strips 100 can be joined together at a constant speed, preventing the winding-up phenomenon that the diameter of the rehabilitation pipe 130 gradually increases during the pipe making process, It is possible to stably produce pipes while maintaining a constant pipe diameter.
- the guide unit 7 is configured such that a plurality of sets of restriction rollers 71 and 72 are pivotally supported by a frame (not shown) and are detachable from the frame 2. Further, the configuration may be such that the regulation rollers 71 and 72 are stored in pairs in a frame body, and these are detachably connected to the frame 2.
- a drive source may be connected to the guide portion 7 so that the pair of regulating rollers are rotationally driven in opposite directions, and the synthetic resin strip 100 is sandwiched and sent out to the joining mechanism portion 4.
- the guide portion 7 is not limited to the configuration using the regulation roller.
- the synthetic resin strip 100 is placed on the curved guide plate forming the supply path of the synthetic resin strip 100 along the guide plate.
- a plurality of restricting members such as rotatable rollers that are held together are arranged, and a synthetic resin strip is passed between the guide plate and the restricting member and guided to the joining mechanism section 4. May be.
- the rigidity around the outer roller 43 of the joining mechanism portion 4 where an excessive load is applied is increased, so that the outer roller 43 is made uneven or obstructed on the inner wall of the existing pipe 200. It is possible to avoid contact with the outer roller 43 and the like, and damage to the outer roller 43 can be prevented to the maximum, so that the working efficiency is improved and the pipe making machine 1 can be driven smoothly.
- FIG. 12 is a front view showing the pipe making machine according to the second embodiment.
- the pipe making machine 1 according to the second embodiment is characterized by the form of the connecting frame 29 of the frame 2 with respect to the first embodiment. Moreover, the pipe manufacturing method can be performed similarly to the above. Therefore, in the following description, the connection frame 29 of the pipe making machine 1 will be described in detail, and the detailed description of the other components will be omitted using the same reference numerals as those in the first embodiment.
- the existing pipe 200 shown in FIG. 12 is formed with a small diameter as compared with the example shown in FIG.
- the frame 2 of the pipe making machine 1 is arranged so as to have a smaller annular shape. That is, the frame 2 is formed so as to form a substantially ring shape with a smaller number of link bodies 21 to 21 than the frame 2 of the first embodiment.
- connection frame 29 is rotatably connected to the link body 21.
- the other end portion of the connection frame 29 is fixedly bonded to the side portion of the bonding mechanism portion 4 at a substantially right angle.
- connection frames 29 and 29 are formed with a length substantially the same as the link frame 23 constituting the link body 21. As shown in FIG. 12, the connection frames 29 and 29 are arranged so as to draw a string with respect to the arc-shaped inner shape of the existing pipe 200 via the rollers 3a and 3a.
- the joining mechanism portion 4 is supported by the existing pipe 200 via the rollers 3a and 3a (and the rehabilitation pipe 130) by the short connection frames 29 and 29 and the wheel 6 as a support. Thereby, the joining mechanism part 4 is integrated with the frame 2 and supported in a state of being separated from the inner peripheral surface of the existing pipe 200 by a certain distance.
- the frame 2 of the pipe making machine 1 can be installed in the existing pipe 200 in correspondence with the existing pipe 200 having a small diameter.
- the pair of adjacent link bodies 21 and 21 are disconnected, the plurality of link bodies 21 are carried in one row, and the pair of adjacent link bodies 21 and 21 are connected again. It can be formed in an annular shape.
- the outer roller 43 can be adjusted so as not to contact the inner surface of the existing pipe 200.
- the bending links 5 that can open and close the frame 2 to expand or contract the frame 2 are provided at appropriate locations on the frame 2. Also good.
- the pipe making machine 1 can obtain a sufficient reaction force from the existing pipe 200 by the wheels 6, and when there are few steps or irregularities on the inner surface of the existing pipe 200, the connecting frame 29 extending to the joining mechanism portion 4. Can be short. This also increases the rigidity around the outer roller 43 of the joining mechanism portion 4 that is subjected to an excessive load, as in the first embodiment, so that the outer roller 43 does not come into contact with irregularities or obstacles on the inner surface of the existing pipe 200. It can be supported away from the inner surface of the existing pipe 200. Thereby, the smooth driving of the pipe making machine 1 becomes possible. For the existing small diameter pipe 200, the connecting frame 29 of the pipe making machine 1 can be shortened to about 10 mm.
- FIG. 13 is a front view showing a pipe making machine according to the third embodiment
- FIG. 14 is an explanatory view showing an enlargement of a joining mechanism part in the pipe making machine of FIG.
- FIG. 15 is a perspective view showing a wheel support structure.
- the pipe making machine 1 according to the third embodiment and the next fourth embodiment is characterized by the structure of the joining mechanism section 4 with respect to the first embodiment. Moreover, the pipe manufacturing method can be performed similarly to the above. Therefore, in the following description, the joining mechanism portion 4 will be described with emphasis, and the detailed description of the other components will be omitted using the same reference numerals as those in the first embodiment.
- the joining mechanism portion 4 is provided with two wheels 6 and 6 as a support.
- a pinch roller comprising an inner roller 42 rotatably supported inside the gear box 40 and an outer roller 43 disposed outside the gear box 40. 41, and the pinch roller 41 is rotated by the driving force from the gear mechanism 46 so as to sandwich and send out the synthetic resin strip 100.
- the wheels 6 and 6 are arrange
- each wheel 6 is pivotally supported by an arm portion 62 that extends under the bracket 61.
- the bracket 61 is attached to a back plate 63 joined to the side of the gear box 40.
- Each of the two wheels 6 has a diameter larger than that of the outer roller 43, and is configured to support the joining mechanism portion 4 on the inner surface of the existing pipe 200 and to rotate in contact with the inner surface of the existing pipe 200. ing. Thereby, the joining mechanism part 4 is stably supported also by the two wheels 6 and 6 on the inner surface of the existing pipe 200.
- Each wheel 6 is attached to the back plate 63 through two long holes 61 a provided in the bracket 61.
- the wheel 6 can change the position of the rotating shaft of the wheel 6 with respect to the radial direction of the existing pipe 200 by adjusting the attachment position through the long holes 61a.
- the bracket 61 is provided with an adjusting mechanism 64 for adjusting the mounting height of the wheel 6.
- the adjustment mechanism 64 includes an adjustment bolt 641 and a set nut 643.
- the adjustment bolt 641 includes a bolt shaft portion 642 that is screwed into the set nut 643.
- a support plate 631 extends from the back plate 63.
- the bolt shaft portion 642 is passed through the support plate 631, and the distal end portion is inserted into a box 612 provided at the center portion of the bracket 61.
- a lock nut 643 is screwed onto the bolt shaft portion 642.
- a thrust bearing 644 is externally fitted to the bolt shaft portion 642 on the upper surface portion and the lower surface portion of the support plate 631.
- the operation of rotating the adjustment bolt 641 can easily change the mounting height of the bracket 61 and the rear plate 63 (the distance between the lower surface of the support plate 631 and the upper surface of the box 612). The height can be adjusted.
- the joining mechanism part 4 is supported by the connection frames 29 extending on both sides, the outer roller 43 of the pipe making machine 1 and the inner surface of the existing pipe 200 are coupled with the action of the two wheels 6 and 6. It can be made not to contact. Therefore, the joining mechanism portion 4 is supported more stably in the frame 2, and the pipe making operation can be advanced efficiently.
- the joining mechanism portion 4 orbits the inside of the inner surface of the existing pipe 200, it smoothly rotates with the inner roller 42 without disturbing the rotation of the outer roller 43, so that it is inside the outer diameter of the renovated pipe 130.
- the joint portions of the synthetic resin strip 100 can be joined to each other.
- FIGS. 16 to 19 show a pipe making machine according to the fourth embodiment
- FIG. 16 is a front view of the pipe making machine
- FIG. 17 is an explanatory view showing an enlargement of the joining mechanism
- FIG. 18 is a drive part of the joining mechanism
- FIG. 19 is a side view showing the fitting portion of the joining mechanism portion.
- the joining mechanism part 4 is a fitting part 49 that fits and joins the driving part 48 that acts to revolve the frame 2 along the inner surface of the existing pipe 200 and the joining part of the synthetic resin strip 100.
- Each of the drive unit 48 and the fitting unit 49 is mainly configured by a pinch roller in which an inner roller and an outer roller are combined.
- the drive unit 48 includes a pinch roller 41a composed of an inner roller 42a and an outer roller 43a.
- the fitting portion 49 includes a pinch roller 41b including an inner roller 42b and an outer roller 43b.
- the pinch rollers 41a and 41b are already wound, the part corresponding to the synthetic resin belt-like body 100 (rehabilitation pipe 130) after the second round, and the new first round. Since the portions corresponding to the synthetic resin strip 100 have different structures, the feeding speed of the synthetic resin strip 100 to the rehabilitation pipe 130 is kept constant. Thus, the joint portions of the synthetic resin strips 100, 100 are joined together without looseness.
- the drive unit 48 includes an inner roller 42a and an outer roller 43a as pinch rollers 41a.
- the inner roller 42a includes two cylindrical rollers having different diameters (first roller portion 421 and second roller portion 422) on the same axis, and the second roller portion 422 is larger than the first roller portion 421. It is formed with a diameter. Both the outer peripheral surfaces of the first roller portion 421 and the second roller portion 422 are formed of a synthetic resin material or a synthetic rubber material having elasticity such as hard urethane rubber and silicon resin.
- the outer roller 43a is provided with a small-diameter cylindrical body 432 in a substantially half part (corresponding to the width of the first round synthetic resin strip-like body 100) near the base, and a substantially half part (second round synthetic resin made near the tip).
- a plurality of disc-shaped roller portions 431... 431 are provided on the outer periphery of the cylindrical main body 433.
- the roller portions 431... 431 are provided at intervals to be fitted in the grooves between the ribs 103 and 102 of the synthetic resin strip 100, and rotate in contact with the outer peripheral surface of the synthetic resin strip 100 that has already been wound and joined. To do.
- a groove that fits the convex portion of the reinforcing material 109 of the synthetic resin belt-like body 100 is recessed in the circumferential surface of the roller 431 a corresponding to the space between the ribs 103 and 102 to which the reinforcing material 109 is attached. It is installed.
- the surface of the cylindrical main body 433 is knurled to come into contact with the tip of the substantially T-shaped rib 103 of the synthetic resin strip 100 and prevent slipping with the synthetic resin strip 100.
- a substantially half portion (on the first roller portion 421 side) near the base is separated wider than the thickness of the synthetic resin strip 100, and the synthetic resin strip It does not have an effect of sandwiching 100.
- the substantially half part (the second roller part 422 side) near the tip serves to sandwich and press the synthetic resin strip 100 between the outer roller 43a and the inner roller 42a. Therefore, the synthetic resin belt-like body 100 of the first round newly supplied to the joining mechanism portion 4 passes between the first roller portion 421 of the inner roller 42a and the outer roller 43a as it is without being sandwiched, and is adjacent to the belt. It moves to the fitting part 49 to do.
- the synthetic resin belt-like body 100 wound around the existing pipe 200 by one turn is sent in a state where the joint portions are joined to each other. And sandwiched between the second roller portion 422 and the outer roller 43a. Since the inner roller 42a is rotationally driven and the outer roller 43a is knurled, the sandwiched synthetic resin strip 100 (rehabilitation pipe 130) is sandwiched without slipping. In this manner, the joining mechanism portion 4 and the frame 2 are caused to react with the synthetic resin strip 100 by the reaction force when the synthetic resin strip 100 is sent out between the second roller portion 422 of the inner roller 42a and the outer roller 43a. Revolves (revolves) in the direction opposite to the feed direction. Thereby, the drive unit 48 drives the pipe making machine 1 into the existing pipe 200.
- the fitting part 49 is provided with the inner roller 42b and the outer roller 43b as the pinch roller 41b.
- the inner roller 42b is formed of a first roller portion 423 and a second roller portion 424 that have the same diameter.
- the inner roller 42b joins the joint portions of the synthetic resin strips 100 at the first roller portion 423, and the synthetic resin strips 100 (rehabilitation pipes) after the second round already joined by the second roller portion 424. 130 end).
- the first roller portion 423 is disposed via a bearing mechanism with respect to the rotation shaft of the inner roller 42b, and is rotatably supported. Thereby, it rotates without producing resistance between the synthetic resin strips 100, and the synthetic resin strips 100 are sandwiched between the outer rollers 43b.
- the outer roller 43b includes a plurality of disc-shaped roller portions 431... 431 that match the rib shape of the synthetic resin strip 100.
- the roller portions 431... 431 do not need to be in particular contact with the synthetic resin strip 100, and are disposed so as to be fitted and positioned in the groove portion between the ribs 103 and 102.
- the outer peripheral surface of the cylindrical body 433 is knurled in a range facing the second roller portion 424 of the inner roller 42b.
- the inner roller 42b and the outer roller 43b sandwich the synthetic resin belt-like body 100 that has passed through the drive unit 48, and join the joined parts. Moreover, since the 1st roller part 423 of the inner roller 42b is rotatable, it can join the joining parts smoothly, sending the synthetic resin strip
- the joint convex portion 101 of the synthetic resin strip 100 of the first round is fitted into the joint concave portion 102 of the adjacent synthetic resin strip 100 of the second round, and the inclined piece 108 is attached to the tip of the rib 103. Fit. Thereby, the joint parts of the synthetic resin strips 100 are joined together, and the rehabilitation pipe 130 is formed.
- the rehabilitating pipe 130 maintains a constant pipe diameter, and the joint portion is in close contact with each other. Therefore, the rehabilitating pipe 130 can be a highly accurate and highly water-tight tube body.
- the joining mechanism unit 4 adopts a mode in which only the pinch roller 41a of the driving unit 48 is driven, and the first round synthetic resin strip 100 and the second and subsequent round synthetic resins. Smooth pipe making work is possible without causing a speed difference with the belt-like body 100.
- a pinch roller of the joining mechanism part 4 you may employ
- the pinch rollers 41 a and 41 b are pivotally supported by the gear box 40 via a gear mechanism 46.
- the rotation shafts of the inner rollers 42a and 42b and the rotation shafts of the outer rollers 43a and 43b are arranged so that the axial direction is orthogonal to the lead angle at which the synthetic resin strip 100 is supplied in a spiral shape.
- the hydraulic motor 45 is driven to rotate, the rotation shafts of the inner rollers 42a and 42b and the rotation shafts of the outer rollers 43a and 43b rotate in opposite directions through a gear fixed to the output shaft and a gear meshed with the gear. Then, the pinch rollers 41a and 41b are operated.
- An impact absorbing member 401 having a spring 402 is provided on the outer side of the gear box 40, and the inner roller 42a, 42b and the outer roller 43a are pressed by pressing the outer surface of the gear box 40 even by unevenness of the inner surface of the existing pipe 200. , 43b to maintain the mutual distance.
- wheels 6 and 6 are provided on the side portion of the joining mechanism portion 4.
- the wheels 6 and 6 are provided with a bracket 61 attached to the side surface of the gear box 40, and are rotatably provided via a support member 62 extending at a lower portion of the bracket 61.
- the wheels 6 and 6 have a larger diameter than the outer rollers 43a and 43b, and have rotation axes at positions different from the rotation axes of the outer rollers 43a and 43b. Thereby, the wheels 6 and 6 support the joining mechanism part 4 on the inner surface of the existing pipe 200 without bringing the outer rollers 43 a and 43 b into contact with the existing pipe 200.
- each rotating shaft of the wheel 6 is disposed closer to the inner surface of the existing tube 200 than the rotating shaft of the outer rollers 43a and 43b with respect to the radial direction of the existing tube 200.
- wheels 6 and 6 are arranged as close as possible to the center of gravity of the joining mechanism portion 4 with respect to the axial direction (length direction) of the outer rollers 43a and 43b. That is, each wheel 6 is provided close to the gear box 40 and the gear mechanism 46 that support the outer rollers 43a and 43b.
- the two wheels 6 and 6 are arranged so that the outer rollers 43 a and 43 b are not in contact with the existing pipe 200 in the circumferential direction of the existing pipe 200.
- the wheels 6 and 6 rotate in contact with the inner surface of the existing pipe 200 as the joining mechanism unit 4 moves around. Further, since the wheels 6 and 6 support the joining mechanism portion 4 on the inner surface of the existing pipe 200, the wheels 6 and 6 act so as not to contact the outer rollers 43 a and 43 b and the inner surface of the existing pipe 200 when the renovated pipe 130 is manufactured.
- the outer rollers 43a and 43b can be rotated without contacting the existing pipe 200. Further, the connecting frames 29 and 29 extending on both sides of the joining mechanism portion 4 stably hold the track of the gear box 40 and the wheels 6 and 6 with respect to the existing pipe 200. As described above, since the outer rollers 43a and 43b are supported in an arrangement form that does not contact the existing pipe 200, a frictional force that affects driving is not generated regardless of the state of the inner surface of the existing pipe 200. The pipe making operation can proceed very smoothly.
- the wheel 6 is not limited to the above-described configuration, and may be formed in any manner as long as it is a support body that supports the orbit of the outer rollers 43a and 43b on the inner surface of the existing pipe 200.
- the wheel 6 may be a rotating body whose length is increased in the axial direction, or may be a roller that is axially supported, and is provided at a plurality of locations in the circumferential direction of the pipe making machine 1. Also good.
- the outer roller 43b existing between the existing pipe 200 and the rehabilitation pipe 130 is rotatable.
- the nozzle for injecting the backfilling material toward the outer surface side of the synthetic resin strip 100 (rehabilitation pipe 130) that has passed through the outer roller 43b. That is, by providing the backfilling material injection nozzle in this way, even if the backfilling material adheres to the outer roller 43b, the operation of the pinch roller 41b is not affected, and the driving of the pipe making machine 1 may be stopped.
- the nozzle for injecting the backfilling material toward the outer surface side of the synthetic resin strip 100 (rehabilitation pipe 130) that has passed through the outer roller 43b. That is, by providing the backfilling material injection nozzle in this way, even if the backfilling material adheres to the outer roller 43b, the operation of the pinch roller 41b is not affected, and the driving of the pipe making machine 1 may be stopped.
- the backfilling material injection nozzle in this way, even if the backfilling material adheres to the outer roller 43b, the
- the pipe making machine 1 since the pipe making machine 1 has a substantially annular structure, the pipe making machine 1 does not block the existing pipe 200 when pipe making, and the pipe making machine 1 is stable in the existing pipe 200 even in a water-flowing state.
- the rehabilitation pipe 130 can be manufactured.
- the pipe making machine 1 Since the pipe making machine 1 is configured as described above, the rigidity around the outer rollers 43a and 43b of the joining mechanism portion 4 that is excessively loaded is increased. In addition, the provision of the wheels 6 provides high stability and prevents the outer rollers 43a and 43b from coming into contact with the unevenness or obstacles on the inner wall of the existing pipe 200, thereby preventing breakage. Accordingly, the pipe making machine 1 significantly improves the work efficiency and enables a smooth pipe making operation.
- a synthetic resin strip is stably supplied to the pipe making machine, and rehabilitation pipes can be formed efficiently and smoothly without requiring workers to enter the existing pipes. can do.
- the pipe making machine is configured to smoothly move around the inner surface of the existing pipe as described above, the pipe making process can be smoothly performed without stopping the pipe making process for repair or replacement of each part. It is possible for workers to perform reliable rehabilitation work.
- the present invention can be suitably used in a method of rehabilitating aged existing pipe lining construction.
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Abstract
Description
図2は、合成樹脂製帯状体の一例を示す断面図、図3は、図2の合成樹脂製帯状体の接合部同士を接合する様子を示す説明図、図4は、合成樹脂製帯状体同士を接合した状態を示す説明図である。
次に、実施の形態に係る製管機及び製管方法について説明する。
先ず、実施例1に係る製管機について図面を参照しつつ説明する。
次に、実施例1に係る製管機1を用いた製管方法、および既設管200を更生する方法について説明する。
次に、実施例2に係る製管機について説明する。
次に、実施例3に係る製管機について説明する。
次に、実施例4に係る製管機について説明する。
2 フレーム
21 リンク体
22,23 リンクフレーム
29 連結フレーム
3 ローラ
4 接合機構部
40 ギヤボックス
42、42a、42b インナーローラ
43、43a、43b アウターローラ
45 油圧モータ
46 歯車機構
48 駆動部
49 嵌合部
5 屈折リンク
55 ハンドル
6 車輪
7 ガイド部
71,72 規制ローラ
91 巻取ドラム
92 発電機
93 油圧ユニット
100 合成樹脂製帯状体
101 接合凸部
102 接合凹部
103 リブ
108 傾斜片
109 補強材
130 更生管
200 既設管
Claims (10)
- 合成樹脂製帯状体により更生管を形成する製管機であって、
既設管の内側に設置されるフレームと、合成樹脂製帯状体を接合する接合機構部と、この接合機構部を既設管の内面に支持する支持体とを備え、
前記合成樹脂製帯状体は、幅方向の両側縁部に接合部を備え、螺旋状に巻回されて隣接する接合部同士が前記接合機構部により接合されて管状となる長尺材であり、
前記フレームは、回転自在な複数のローラを備えて既設管の内面に沿って周回可能であり、
前記接合機構部は、前記フレームに設けられて、合成樹脂製帯状体を内側と外側から挟み込むインナーローラ及びアウターローラを備え、
前記支持体は、既設管の内面に接触して回転可能であり、その回転軸をインナーローラ及びアウターローラの各回転軸とは異なる位置に備え、
前記フレームと前記接合機構部が、既設管の内面に沿って周回移動するとともに、前記支持体が既設管の内面に接触して回転し、前記アウターローラを既設管の内面から離した状態に維持しうることを特徴とする製管機。 - 請求項1に記載の製管機において、
前記フレームは複数のリンク体からなり、任意の外形状に変形可能であって、
前記リンク体に対して前記接合機構部を一定の角度を保持して結合する連結フレームを備えることを特徴とする製管機。 - 請求項1に記載の製管機において、
前記支持体は、アウターローラの回転方向の前後両側にそれぞれ設けられたことを特徴とする製管機。 - 請求項1に記載の製管機において、
前記接合機構部は、駆動部と嵌合部とを備え、
これらの駆動部及び嵌合部はそれぞれ個別にインナーローラとアウターローラとを備えており、
前記駆動部が当該接合機構部を既設管の内面に沿って周回移動させ、
前記嵌合部が合成樹脂製帯状体の接合部同士を接合することを特徴とする製管機。 - 請求項4に記載の製管機において、
前記駆動部は、インナーローラ及びアウターローラが、新たに供給されて接合部が未接合の合成樹脂製帯状体を挟み込む第一の部分と、接合部の接合された合成樹脂製帯状体を挟み込む第二の部分とを備え、第二の部分が合成樹脂製帯状体を挟んで送り出す反力によって前記接合機構部が周回移動することを特徴とする製管機。 - 請求項4に記載の製管機において、
前記嵌合部は、インナーローラが回転軸に回転自在に備えられていることを特徴とする製管機。 - 請求項1に記載の製管機において、
前記フレームは、接合機構部に対する合成樹脂製帯状体の供給経路を規定するガイド部を当該フレームの内側に備えていることを特徴とする製管機。 - 請求項7に記載の製管機において、
前記ガイド部は、合成樹脂製帯状体の内側と外側とにそれぞれ当接して回転するように対をなす複数のローラを有することを特徴とする製管機。 - 請求項7に記載の製管機において、
前記ガイド部は、曲面状のガイドプレートと、
合成樹脂製帯状体に当接して回転し、前記ガイドプレートとの間で合成樹脂製帯状体を保持する複数のローラとを備えることを特徴とする製管機。 - 請求項1に記載の製管機を用いて、長尺の合成樹脂製帯状体から更生管を形成する製管方法であって、
前記製管機を既設管内に設置し、両側縁部に接合部を備える長尺の合成樹脂製帯状体を既設管内の製管機に供給し、
前記支持体により接合機構部を既設管の内面に支持させた状態で前記製管機を駆動し、前記アウターローラを既設管の内面から離した状態で合成樹脂製帯状体の接合部同士を接合することを特徴とする製管方法。
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US13/386,871 US8905105B2 (en) | 2009-07-27 | 2010-07-27 | Winding machine and winding method |
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