JP2015112790A - Pipe making device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe making device of which assembly work and disassembly work can be easily performed in a short time, so that a period required for rehabilitating an existing pipe can be reduced and a rehabilitation pipe with high precision can be efficiently formed.SOLUTION: A pipe making device 1 includes an annular frame 2, a fitting roller 5 disposed on the inner peripheral side of a fitting region in a profile 100, and a drive unit 4 which supplies the profile 100 from the inner peripheral side in the fitting region toward the fitting roller 5. The drive unit 4 includes at least one couple of pinch rollers 43 composed of an outer face roller 41 and an inner face roller 42 which are rotation-driven, with the profile 100 sandwiched therebetween. The arrangement position of the pinch roller 43 can be changed relative to the fitting roller 5.

Description

  The present invention relates to a pipe making apparatus for forming a rehabilitation pipe for rehabilitating an existing pipe such as an agricultural water pipe, a sewer pipe, a water pipe, or a gas pipe.

  A method of rehabilitating the inner peripheral surface of a long-established existing pipe by using a long strip-shaped lining material called a profile is widely used. In this method, the profile is spirally wound in the existing pipe, the fitting portions of the profile are fitted to each other, and a new tubular body is formed in the existing pipe.

  For example, the pipe manufacturing apparatus disclosed in Patent Documents 1 and 2 and the like includes a forming frame 301 and a plurality of guide rollers 302 rotatably provided on the forming frame 301, as shown in FIG. . The molding frame 301 includes a plurality of link bodies 303, a refraction link 304 that is rotatably connected, and a drive unit 305 that is rotatably connected.

  The drive unit 305 is rotatably supported by a box 306, a hydraulic motor 307 provided in the box 306, a pinch roller 310 in which an inner roller 308 and an outer roller 309 are combined, and a box 306. And a guide roller 311. The box body 306 is formed in a rigid box shape, and a gear mechanism that rotates the inner roller 308 and the outer roller 309 synchronously is provided inside.

  In such a pipe manufacturing apparatus 300, the fitting part of the profile 100 is pressed and fitted from the inner peripheral side while applying a force (back tension) opposite to the supply direction to the profile 100 to be supplied. The rehabilitation tube 120 is formed. Moreover, since the pipe making apparatus 300 makes the pipe while supplying the spiral profile 100 so as to be continuously wound, the diameter of the rehabilitation pipe 120 to be formed can be kept constant. By applying the back tension to the profile 100 to be supplied, the outer peripheral roller (outer roller) provided in the conventional pipe making apparatus is unnecessary. Thereby, even when the reaction force cannot be obtained from the outside or when the inner surface of the existing pipe is uneven, it is possible to smoothly manufacture the pipe regardless of such a situation.

Japanese Patent No. 4674082 Japanese Patent No. 5166896

  The profile used for rehabilitation has a predetermined strength and bending rigidity. Therefore, when a profile is supplied so as to be wound in a spiral shape, a reaction force (internal stress) is generated in the profile. That is, since the profile generates a force to spread outside the spiral path during the fitting, the profile is stably coupled with the action of pressing the fitting portions of the profile from the inner peripheral side. .

  However, if the pipe diameter of the existing pipe to be rehabilitated is large, the pipe diameter of the renovated pipe formed by the pipe making apparatus must be increased, and the outer diameter of the pipe making apparatus must be increased. When the diameter of the rehabilitation pipe is increased, the reaction force generated in the profile can be kept relatively small. Therefore, in such a case, there is a problem that the action of the fitting portions of the profiles trying to fit themselves is weakened.

  On the other hand, if an excessive reaction force is generated in the profile supplied spirally, it acts to push the pipe making device in the direction of travel, and in some cases the pipe making device is pushed forward, and the fitting of the profile is shifted. It was thought that it was likely to occur. For this reason, it has been necessary to individually take measures so that the fitting portion of the profile can be stably and reliably fitted according to the diameter of the existing pipe.

  The present invention has been made in view of the above-described conventional problems, and the object of the present invention is to occur in the profile when the pipe is formed without a clearance between the inner surface of the existing pipe and the renovated pipe. An object of the present invention is to provide a pipe making apparatus that can utilize a reaction force and can stably form a highly accurate rehabilitation pipe regardless of the diameter of the existing pipe or the rehabilitation pipe.

  In order to achieve the above object, the solution of the present invention is to wind a long profile spirally and press the fitting portion of the profile following the fitting portion of the preceding profile from the inner peripheral side. It is premised on a pipe making apparatus that is fitted to each other to form a tubular shape. For this pipe making apparatus, a substantially annular frame body, a fitting roller provided on the frame body and disposed on the inner peripheral side of the fitting region between the preceding part and the subsequent part of the wound profile; A drive unit that supplies the profile from the inner peripheral side of the fitting region toward the fitting roller. Then, the drive unit is provided on the inner peripheral side of the frame body as a configuration having at least one pair of pinch rollers composed of a pair of an outer roller and an inner roller that are rotationally driven across a profile, and It is characterized in that the arrangement position of the pinch roller can be changed.

  With such a specific matter, in the drive unit that supplies the profile from the inner peripheral side of the fitting region toward the fitting roller, the pinch roller is disposed on the fitting roller according to the diameter of the rehabilitation pipe to be formed. The position can be set and the approach path of the profile with respect to the fitting roller can be defined. As a result, when the pipe making diameter is large, the profile entry path with respect to the fitting roller is supplied so as to be closer to an acute angle, thereby generating a reaction force on the profile and enhancing the profile fitting action. Therefore, it is possible to stably form a rehabilitation pipe with high accuracy. On the other hand, when the pipe making diameter is relatively small, the bending of the entry path of the profile can be loosened to suppress the action on the pipe making apparatus, and the pipe can be produced without causing any deviation or poor fitting. It becomes possible.

  As a more specific configuration of the pipe making apparatus, first, the drive unit is formed separately from the frame body and is detachably provided on the frame body via a mounting tool. It is preferable that the arrangement position of the pinch roller can be changed.

  Thereby, the installation position of the pinch roller with respect to the fitting roller can be changed by changing the mounting position of the drive unit, and the profile entry path is freely defined according to the diameter of the rehabilitation pipe to be formed. be able to. In addition, since the drive unit is detachable, it is easy to obtain a necessary arrangement form, and workability during assembly and disassembly can be improved.

  Further, in the pipe manufacturing apparatus having the above configuration, the drive unit is provided with a plurality of connection holes with the attachment tool, and the attachment tool is installed between the frame body and the drive unit so that the drive unit is attached to the frame body. It is preferable to fix to.

  Thereby, the arrangement position of the pinch roller with respect to the fitting roller can be set in various forms, and the drive unit can be fixed so as to keep the entry path of the profile supplied by the drive unit constant. It is possible to accurately form a rehabilitation pipe having a diameter of.

  As a specific configuration of the pipe making apparatus, the drive unit is further provided so as to be rotatable with respect to the frame body, and the drive unit is fixed within the rotation range to dispose the pinch roller. The position may be changeable.

  Thus, the entry path of the profile can be freely changed by rotating the drive unit without greatly changing the structure of the pipe manufacturing apparatus. In addition, since the drive unit is provided so as to be rotatable, the arrangement of the pinch rollers can be easily changed in a short time with good workability.

  More specifically, a fixing member is disposed between the frame body and the drive unit, the fixing member is rotatably provided on the frame body, and a connection position between the fixing member and the drive unit can be changed. A configuration is preferable.

  As a result, it is possible to define and change the profile entry path only by a simple operation of changing the connecting position between the fixing member and the drive unit, and the work efficiency is very high and the operation can be performed in a short time. I can finish it.

  Further, in the pipe manufacturing apparatus, it is preferable that the fixing member is provided with a plurality of connection holes for fixing the drive unit.

  Accordingly, the drive unit and the fixing member can be easily coupled and separated, and the arrangement position of the pinch roller with respect to the fitting roller can be easily changed.

  Further, in the pipe making apparatus, the pinch roller of the drive unit may be arranged in front of the fitting region, and the roller with respect to a virtual plane including the roller axis of the fitting roller and the axis of the frame body. It is preferable to arrange in a spatial region up to a central angle of 75 ° with the axis as the center.

  This makes it possible to define an appropriate profile entry path, and adjust the reaction force generated in the profile according to the diameter of the rehabilitation pipe to be formed. It is possible to form a rehabilitation tube well and stably.

  In the pipe manufacturing apparatus, it is preferable that a guide member for defining a profile supply path is provided on a front portion of the drive unit on an inner peripheral side of the frame body.

  Accordingly, the profile can be stably held and the supply path of the spiral profile is stabilized, so that it is easy to form a highly accurate rehabilitation pipe. Further, by defining the profile supply path, it is possible to adjust so as to alleviate the action of the profile on the pipe making apparatus, and it is possible to prevent the position deviation of the pipe making apparatus.

  In the present invention, the annular frame body, the fitting roller disposed on the inner peripheral side of the fitting region between the preceding portion and the subsequent portion of the wound profile, and the profile from the inner peripheral side of the fitting region. And a drive unit for supplying to the fitting roller, and the arrangement position of the pinch roller with respect to the fitting roller can be changed, so that the profile entry path with respect to the fitting roller can be defined. Therefore, it is possible to efficiently and stably form a highly accurate rehabilitation pipe regardless of the diameter of the existing pipe to be rehabilitated, and as a result, it is possible to shorten the time required for the rehabilitation work of the existing pipe. .

It is a front view which shows the pipe manufacturing apparatus which concerns on embodiment of this invention. The link body in the said pipe making apparatus is shown, FIG. 2 (a) is a front view, FIG.2 (b) is a partially broken top view. It is a side view which shows the drive unit in the said pipe making apparatus partially fractured | ruptured. It is a perspective view which shows the state which open | released the said drive unit. It is a top view of the fitting roller in the said pipe making apparatus. It is an expanded rear view which shows the drive unit and fitting roller in the said pipe manufacturing apparatus. It is a perspective view which shows the drive unit and fixing member in the said pipe manufacturing apparatus. It is explanatory drawing which illustrates the change of the supply path | route of the profile in the said pipe making apparatus. FIG. 9A to FIG. 9C are explanatory views schematically showing examples of the positions of the rehabilitation pipes having different diameters and the pinch rollers in the pipe making apparatus. It is explanatory drawing which shows the rehabilitation method of the existing pipe | tube using the pipe manufacturing apparatus which concerns on this invention. Fig.11 (a) and FIG.11 (b) are each an enlarged front view which shows a part of pipe manufacturing apparatus which concerns on other embodiment of this invention. It is a front view which shows the pipe manufacturing apparatus which concerns on further another embodiment of this invention. It is a front view which shows the pipe manufacturing apparatus which concerns on further another embodiment of this invention. An example of a profile is shown, FIG. 14A is an explanatory view showing a state of joining profiles, and FIG. 14B is an explanatory view showing a joined state. FIG. 15A is an explanatory diagram showing how the profiles are joined, and FIG. 15B is an explanatory diagram showing the joined state. It is a front view which shows the conventional pipe manufacturing apparatus.

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

  FIG. 1 is a front view of a pipe manufacturing apparatus 1 according to an embodiment. 2A and 2B show the link body 21 in the pipe making apparatus 1, FIG. 2A is a front view, and FIG. 2B is a plan view showing the link roller 3 in a partially broken view.

  In addition, in the following description, the advancing direction of the pipe making apparatus 1 in the existing pipe 200 at the time of forming the renovated pipe 120 by the pipe making apparatus 1 will be described as the front, and the opposite direction will be positioned as the rear.

  The pipe making apparatus 1 is an apparatus that continuously draws a long strip profile 100 into an existing pipe 200 and spirally winds it to form a tubular shape. In the profile 100, a preceding portion and a subsequent portion are arranged adjacent to the outer peripheral portion of the pipe making apparatus 1, and fitting portions provided in the profile 100 are fitted to each other. As a result, the profile 100 becomes tubular and is left in the existing pipe 200. Further, as shown in FIG. 10 to be described later, the pipe making apparatus 1 advances in the axial direction of the existing pipe 200 while rotating in the circumferential direction along the inner wall of the existing pipe 200, so that the renovated pipe 120 is additionally provided. It is formed.

  The pipe making apparatus 1 according to the illustrated embodiment is a self-propelled pipe making apparatus used for the construction of the rehabilitation pipe 120 having a circular cross section, and includes a frame body 2 and a plurality of link rollers 3 pivotally supported by the frame body 2. And a drive unit 4 that supplies the profile 100 from the inner peripheral side of the frame body 2 and a fitting roller 5 that presses the fitting portion of the profile 100 from the inner peripheral side.

  As shown in FIG. 1, the frame body 2 includes a drive unit 4 for supplying a profile 100 by a link mechanism in which a plurality of link bodies 21 are connected to each other, a fitting roller 5 for fitting the profile 100 in a tubular shape, and the like. It is mutually connected with each member, and is formed in the substantially cyclic | annular form.

  As shown in FIGS. 2A and 2B, the link body 21 is formed by a pair of link frames 22 and 23 that are rotatably connected via a connecting shaft 24. As shown in FIG. 2B, one link frame 22 (first link frame 22) is coupled to a pair of opposed first link plates 221 and these first link plates 221 facing each other. And a first connecting plate 222. The other link frame 23 (second link frame 23) includes a pair of opposing second link plates 231 and a second connection plate 232 that couples the second link plates 231 to face each other. Is done.

  In the link body 21, the end portions of the pair of second link plates 231 in the second link frame 23 are overlapped with the end portions of the pair of first link plates 221 in the first link frame 22, respectively. It is formed so as to be freely rotatable via the. The link body 21 is joined to the first connection plate 222 of one link body 21 by abutting the first connection plate 222 of the other link body 21. Further, the second connection plate 232 of another link body 21 is abutted and joined to the second connection plate 232 of one link body 21. Thereby, the some link body 21 is connected mutually.

  As shown in FIG. 2A, a rotation restricting piece 211 is provided on the surface of the link plate 221 in the first link frame 22 around the connecting shaft 24. At the end of the link plate 231 of the second link frame 23, a notch 212 corresponding to the rotation restricting piece 211 is provided. The notch 212 is formed over a certain range on a set radius with the rotation center of the connecting shaft 24 as the center. Thereby, the mutual rotation operation of the pair of link frames 22 and 23 is restricted to an angle range until the rotation restricting piece 211 and the notch 212 abut, and the link body 21 is inward or outward. Prevents extreme bending.

  The adjacent link bodies 21 are detachable through bolts and nuts (not shown) by combining the connection plates (the first connection plates 222 or the second connection plates 232) of the link frames 22 and 23. It is connected. If the frame body 2 can be formed to be detachable between specific adjacent link bodies 21 so that the frame body 2 can be formed linearly, the remaining link bodies 21 may be formed so as not to be detachable by welding or the like.

  A link roller 3 is provided on the connecting shaft 24 of the link body 21. The link roller 3 is a cylindrical body made of synthetic resin or metal, and is supported through a bearing 25 so as to be rotatable around the connecting shaft 24. A profile 100 is spirally wound around the outer periphery of the frame body 2. The link roller 3 rotates in contact with the profile 100 and the inner surface of the rehabilitation pipe 120 when forming the rehabilitation pipe 120.

  Here, as shown in FIG. 14A, the profile 100 has a shape in which a plurality of ribs 102 having a T-shaped cross section are erected on a strip-like substrate 101. On one side edge portion of the substrate 101, a fitting convex portion 103 is erected as a fitting portion. On the other side edge of the substrate 101, a stepped portion 104 corresponding to the thickness of the substrate 101 is formed, and a fitting recess 105 is provided as a fitting portion. As shown in FIG. 14B, the side edge portion of the substrate 101 on the fitting convex portion 103 side is accommodated in the stepped portion 104. Further, the fitting convex portion 103 is fitted into the fitting concave portion 105 of the adjacent profile 100. The profile 100 is formed in a long shape from a synthetic resin material such as hard vinyl chloride, polyethylene, or polypropylene.

  The profile 100 is provided with a metal reinforcing material 106. The illustrated reinforcing material 106 is formed by bending a strip-shaped steel plate into a substantially W-shaped cross section. The reinforcing material 106 is fitted between the adjacent ribs 102 of the profile 100, and the tips of the left and right inclined portions are respectively engaged with the T-shaped portions of the ribs 102. Thereby, the reinforcing material 106 is continuously arranged in the longitudinal direction of the profile 100.

  The profile 100 is spirally wound in the pipe making process, and as shown in FIG. 14A, the preceding portion and the following portion are adjacent to each other. And the fitting convex part 103 of a subsequent part is fitted from the inner surface side (inner peripheral side of the profile 100 already wound) with respect to the fitting concave part 105 of the leading part of the profile 100, and is mutually joined.

  The frame body 2 is provided with a drive unit 4 for drawing in and sending out the profile 100. FIG. 3 is a side view showing the outer roller 41 and the inner roller 42 by partially cutting the drive unit 4.

  The drive unit 4 is mainly configured by a pinch roller 43 in which an outer surface roller 41 disposed on the outer peripheral side of the frame body 2 and an inner surface roller 42 disposed on the inner peripheral side thereof are paired. Further, the drive unit 4 includes a motor 46 that rotationally drives the outer roller 41 and the inner roller 42. The outer surface roller 41 and the inner surface roller 42 are rotationally driven in directions opposite to each other via a reduction gear (for example, each gear of the gear mechanism 44).

  As shown in FIG. 1, in the drive unit 4 according to the exemplary embodiment, two sets of pinch rollers 43 are arranged on the inner peripheral side of the frame body 2 along the supply line of the profile 100.

  The inner surface roller 42 and the outer surface roller 41 are provided inside a casing 45 having rigidity, and each rotation shaft is rotatably supported. The driving force of the motor 46 is transmitted to the rotation shaft of each roller through the gear mechanism 44, and rotates the inner roller 42 and the outer roller 41 with appropriate deceleration. The rotation direction of the pinch roller 43 is set so that the profile 100 is sandwiched between the inner surface roller 42 and the outer surface roller 41 and sent out.

  The inner roller 42 is made of a synthetic resin or metal cylinder, and is formed such that its axial length is longer than the length corresponding to the width dimension of the profile 100. The inner surface roller 42 rotates while being in contact with the inner surface of the profile 100 (the surface where the rib 102 is not erected).

  The outer roller 41 includes a large diameter roller 411, a reinforcing material large diameter roller 412, and a small diameter roller 413. The large diameter roller 411 is formed with a width that can be inserted between adjacent ribs 102 of the profile 100. A plurality of reinforcing-material large-diameter rollers 412 are provided, and each is formed in a hook shape that can be inserted into a substantially V-shaped groove of the reinforcing material 106 attached to the profile 100. A plurality of small-diameter rollers 413 are provided, and are formed with a smaller diameter than the large-diameter roller 411 and the large-diameter roller 412 for reinforcing material so as to rotate in contact with the tip of the rib 102 of the profile 100. As a result, the outer roller 41 rotates without sliding while contacting the outer surface of the profile 100 (the surface on which the rib 102 is erected).

  The pinch rollers 43 (inner surface roller 42 and outer surface roller 41) that rotate in opposite directions sandwich the profile 100 from both sides, and draw it from the inner peripheral side of the frame body 2. By the two sets of pinch rollers 43, the subsequent portion of the profile 100 is continuously fed to the outer peripheral side of the frame body 2 so as to be parallel to the preceding portion of the profile 100 that has already been wound (see FIG. 1).

  The motor 46 is driven by, for example, pressure oil supplied from the hydraulic unit 93 shown in FIG. 10 via a hydraulic hose, and the hydraulic unit 93 is configured to be driven by electric power supplied from the generator 92. . In this case, the hydraulic hose extending from the hydraulic unit 93 is connected to the motor 46 via the rotary joint 47 and supplies pressure oil without affecting the rotation of the pipe making apparatus 1.

  As shown in FIG. 4, the drive unit 4 has an opening / closing mechanism for opening / closing the pinch roller 43 between the press contact position and the separation position with respect to the profile 100. Thereby, the pinch roller 43 provided in the drive unit 4 can be pressed against and separated from the profile 100.

  By providing such an opening / closing mechanism, the pipe making apparatus 1 can open the drive unit 4 and separate the outer surface roller 41 and the inner surface roller 42 that sandwich and rotate the profile 100 from the profile 100. The profile 100 separated from between the pinch rollers 43 can be pulled out to the front side as it is and easily removed from the drive unit 4.

  Further, as shown in FIG. 1, a fitting roller 5 is disposed ahead of the driving direction of the profile 100 by the drive unit 4. FIG. 5 is a plan view showing the fitting roller 5 in the pipe making apparatus 1. The fitting roller 5 includes a main body 51 and a disk-shaped flange 52 having a larger diameter than the main body 51. The fitting roller 5 is rotatably supported around a shaft 53, and the outer peripheral surface of the main body 51 comes into contact with the inner surface of the profile 100. The flange 52 abuts on one side edge of the profile 100 and guides the profile 100.

  The fitting roller 5 presses the spirally wound profile 100 against the side edge of the preceding profile 100 in the existing pipe 200, and fits the fitting convex portion 103 and the fitting concave portion 105, Made into a tube. The fitting roller 5 is disposed so as to be orthogonal to the longitudinal direction of the profile 100 constituting the rehabilitation pipe 120. As a method of making the fitting roller 5 orthogonal to the profile 100, for example, in the frame body 2, a connection portion between a pair of adjacent link bodies 21, or a connection between the adjacent link body 21 and the connecting link body 26. In at least one of the connecting portions, it is preferable that one of the link bodies 21 and 26 is moved in the tube axis direction with respect to the other link bodies 21 and 26 and fixed in the moved state. .

  An outer surface guide 6 is provided between the drive unit 4 and the fitting roller 5 so that the profile 100 does not swell toward the outer peripheral side. The outer surface guide 6 includes a small-diameter guide roller 61 that guides the inner surface of the profile 100, and a guide plate 62 that is disposed on the outer peripheral side from the outer surface of the profile 100. The guide roller 61 is rotatably supported by the frame body and rotates in contact with the inner surface of the profile 100. The guide roller 61 and the guide plate 62 are opposed to each other with the profile 100 interposed therebetween, and smoothly regulate the path of the profile 100 sent from the drive unit 4 to the fitting roller 5.

  In addition, it is preferable that the pipe making apparatus 1 is provided with a fixing member 7 that restrains the rotation of the adjacent link bodies 21 and fixes the interconnection angle constant. As shown in FIG. 1, the fixing member 7 is attached to specific link bodies 21 and 26. The fixing member 7 is disposed at a plurality of locations both on the upstream side and the downstream side of the fitting region of the profile 100. The fixing member 7 is formed in a size corresponding to the notch portion 212 to be fitted, and includes a recess corresponding to the rotation restricting piece 211.

  6 is an enlarged rear view showing a portion of the drive unit 4 in the pipe making apparatus 1, and FIG. 7 is a perspective view of the portion of the drive unit 4 as seen from the back side.

  In the present embodiment, a first axial frame 27 is disposed around a stepped roller 49 that is rotatably provided on the frame body 2. The first axial frame 27 is integrally joined to the connecting link body 26 that supports the stepped roller 49. The first axial frame 27 is installed between the front and rear link bodies 26 and is disposed in a direction parallel to the stepped roller 49. The first axial frame 27 is made of a rigid metal plate material, and a plurality of first axial frames 27 are arranged so as to surround the outer periphery of the stepped roller 49.

  A second axial frame 28 is integrally joined to the link body 26 that supports the connecting shaft 53 of the fitting roller 5. The second axial frame 28 is made of a rigid metal plate, is laid between the front and rear link bodies 26, and is disposed in parallel with the connecting shaft 53 of the fitting roller 5. These first and second axial frames 27 and 28 are preferably provided with a number of round holes in order to reduce weight.

  Further, a support frame 29 is disposed on the back side of the frame body 2 so as to span between the first axial frame 27 and the second axial frame 28. The first and second axial frames 27 and 28 and the support frame 29 are substantially co-opened in one direction (upper right direction in FIG. 7) when viewed from the inner peripheral side of the frame body 2. A character-shaped frame is formed. The profile 100 is supplied from the inner peripheral side of the first axial frame 27, passes through the drive unit 4, and is guided to the outer peripheral side of the second axial frame 28.

  The drive unit 4 is provided with a mechanism for making it possible to change the arrangement position of the pinch roller 43 with respect to the fitting roller 5. That is, in this embodiment, as shown in FIG. 7, the first axial frame 27 provided around the stepped roller 49 is provided with a support piece 271 standing on the inner peripheral surface of the frame body 2. ing. One end of a fixed member 81 having a predetermined length is rotatably connected to the support piece 271. The fixing member 81 has a plurality of connection holes 811, and the other end is connected to the back surface of the drive unit 4.

  The drive unit 4 is provided so as to be rotatable with respect to the frame body 2 so that the arrangement position of the pinch roller 43 with respect to the fitting roller 5 can be changed. The drive unit 4 is attached to the frame body 2 so that the rotation axis of the outer roller 41 is the center of rotation. In addition, the fixing member 811 and the drive unit 4 are coupled to each other through one of the connecting holes 811 provided in the fixing member 811 by a fastening device such as a bolt. The fixing angle of the driving unit 4 with respect to the frame body 2 is determined by the connecting position of the fixing member 811 and the driving unit 4, and the arrangement position of the pinch roller 43 with respect to the fitting roller 5 is determined.

  In FIG. 6 and FIG. 7, the fixing member 81 is coupled to the drive unit 4 through a connection hole 811 at a position closest to the support piece 271. The drive unit 4 in this state is indicated by a solid line in FIG. From this state, the connection hole 811 for connecting the drive unit 4 is changed, and the drive unit 4 and the fixing member 81 are connected via another connection hole 811 located at a position away from the support piece 271.

  As a result, as indicated by a two-dot chain line in FIG. 8, the drive unit 4 is rotated around the rotation axis of the outer peripheral roller 41 (the outer roller 41 near the fitting roller 5) on the outer peripheral side, and the frame body 2. The fixed angle of the drive unit 4 with respect to is changed. Further, the arrangement positions of the two sets of pinch rollers 43 inside the drive unit 4 are changed. That is, the arrangement position of the pinch roller 43 with respect to the fitting roller 5 is changed.

  Since the profile 100 is guided to the fitting roller 5 through the space between the outer surface roller 41 and the inner surface roller 42 of the two sets of pinch rollers 43 of the drive unit 4, the fixing angle of the drive unit 4 is changed in this way. Then, the supply path (entrance path) of the profile 100 to the fitting roller 5 is changed, and as shown in the drawing, the profile 100 is supplied in a bent state from a gently bent state to a further bent state. It becomes possible to change as follows.

  When the pipe diameter of the existing pipe 200 and the pipe diameter of the renovated pipe 120 to be formed are relatively large, it is preferable to supply the profile 100 to the fitting roller 5 with the profile 100 being bent more greatly. This is because the profiles 100 can be fitted to each other with high accuracy by utilizing the reaction force of the profiles 100. On the other hand, when the pipe diameter of the existing pipe 200 and the pipe diameter of the rehabilitation pipe 120 are relatively small, the spiral path itself of the profile 100 has a curvature, so that the profile 100 is set at the front part of the fitting region. It is not necessary to bend it greatly.

  FIG. 9A to FIG. 9C are explanatory views schematically showing examples of the arrangement positions of the pinch rollers 43 that differ depending on the diameter of the rehabilitation pipe 120 to be formed. The arrangement position of the pinch roller 43 is, for example, with respect to a virtual plane α including two straight lines parallel to the connecting shaft 53 of the fitting roller 5 and the axis of the frame body 2 (and the axis of the rehabilitation pipe 120). It is preferable that the space is within a spatial region up to a central angle of 75 ° around the connecting shaft 53 of the fitting roller 5. Compared to the case where the rehabilitation pipe 120 has a relatively small diameter as shown in FIG. 9A, the diameter of the rehabilitation pipe 120 shown in FIG. 9B and the rehabilitation pipe 120 shown in FIG. It is preferable to dispose the pinch roller 43 so that the central angle with the fitting roller 5 as the center decreases as the distance increases.

  As a result, an internal stress is generated in the profile 100 and a reaction force is generated that spreads toward the outer peripheral side. Therefore, the reaction force of the profile 100 and the action of being pressed against the fitting roller 5 combine to form a fitting convex portion. 103 and the fitting recess 105 are securely fitted. Therefore, when the pipe is formed with no clearance between the inner surface of the existing pipe 200 and the rehabilitation pipe 120, the angle and path for supplying the profile 100 are kept constant in a suitable state, and the reaction force generated in the profile 100 is reduced. It can be utilized, and a highly accurate rehabilitation pipe can be stably formed regardless of the diameters of the existing pipe 200 and the rehabilitation pipe 120.

  In addition, although the drive unit 4 illustrated the form provided with two sets of pinch rollers 43, the present invention is not limited to this, and it is sufficient that at least one set of pinch rollers 43 is provided. Therefore, in FIG. 9, the configuration of the drive unit 4 of the pipe manufacturing apparatus 1 is shown by a set of pinch rollers 43.

(Rehabilitation method for existing pipes)
Next, a construction procedure for rehabilitating the existing pipe 200 using the above-described pipe manufacturing apparatus 1 will be described. FIG. 10 is an explanatory diagram showing a method for rehabilitating the existing pipe 200.

  The profile 100 used for rehabilitation of the existing pipe 200 is wound around the drum 91 and conveyed to the construction site. When rehabilitating the existing pipe 200, the manholes 201 and 202 provided for each predetermined span are used to introduce the profile 100 and the like into the existing pipe 200 for pipe production. The rehabilitation pipe 120 is constructed from the upstream side of the existing pipe 200 toward the downstream side.

  As shown in FIG. 10, a drum 91 with a turntable on which the profile 100 is wound is installed on the ground of the upstream manhole 201. A generator 92 is installed on the ground of the downstream manhole 202. The pipe making apparatus 1 and the hydraulic unit 93 are carried into the existing pipe 200.

  Since the frame body 2 can be disassembled and assembled, the pipe making apparatus 1 can be easily carried into the upstream manhole 201 and assembled. In accordance with the diameter of the rehabilitation pipe 120 to be formed, the circumference of the pipe making apparatus 1 is adjusted by increasing or decreasing the number of link bodies 21. Further, the frame body 2 of the pipe making apparatus 1 is adjusted so as to correspond to the inner diameter of the existing pipe 200 and the width of the profile 100 to be used. Since the drive unit 4 and the fixing member 81 can be retrofitted to the frame body 2, they may be assembled together after being carried into the manhole 201 separately from the link body 21 or the like. Furthermore, the connection position of the fixing member 81 and the drive unit 4 is changed according to the diameters of the existing pipe 200 and the rehabilitation pipe 120 to define the supply path of the profile 100.

  When the assembly work of the pipe making apparatus 1 is completed, the profile 100 is drawn into the manhole 201 from the ground drum 91. Then, the profile 100 is sandwiched between the pinch roller 43 (the outer surface roller 41 and the inner surface roller 42) of the drive unit 4 from the inner peripheral side of the frame body 2 of the pipe making apparatus 1 and is inserted therethrough.

  Next, the profile 100 is sent out to the outer peripheral side of the frame body 2. Moreover, the pipe making apparatus 1 is rotated around the axis, and the sent profile 100 is wound around the outer peripheral surface of the frame body 2 to 3 times. Thereby, the rehabilitation pipe | tube 120 for pipe making start is formed.

  Next, the drive unit 4 of the pipe manufacturing apparatus 1 is driven to rotate the pinch roller 43. The pinch roller 43 sandwiches and pulls in the profile 100. The profile 100 is sandwiched between the outer surface roller 41 and the inner surface roller 42 of the pinch roller 43 and is drawn from the inner peripheral side of the frame body 2 and sent out. A force (back tension) opposite to the feeding direction is applied to the profile 100. Further, due to the reaction force when the profile 100 is fed by the pinch roller 43, the pipe making apparatus 1 orbits (revolves) in the direction opposite to the feeding direction along the inner circumferential surface of the rehabilitated pipe 120 that has already been wound. To do.

  The profile 100 drawn into the drive unit 4 by the pinch roller 43 passes through the outer surface guide 6 and reaches the fitting roller 5 disposed in the fitting region of the profile 100. Here, the subsequent portion of the profile 100 contacts the outer peripheral surface of the fitting roller 5 and is pressed from the inner peripheral side with respect to the previous portion of the profile 100 that is already wound and applied with tension. The fitting convex portion 103 in the subsequent portion of the profile 100 is disposed adjacent to the fitting concave portion 105 in the preceding portion of the profile 100 and is pressed by the fitting roller 5. As a result, the leading and trailing portions of the profile 100 are fitted into a tubular shape (see FIG. 14).

  The drive unit 4 feeds the fitting convex portion 103 of the subsequent profile 100 into the fitting concave portion 105 of the profile 100 while moving around the inner circumference of the profile 100 wound around the frame body 2. Further, these are sequentially fitted by the pressing action of the fitting roller 5 to additionally form the rehabilitation pipe 120. The drive unit 4 supplies the profile 100 in a spiral shape so that the profile 100 is always wound and squeezed.

  Since the pipe manufacturing apparatus 1 does not have a roller member on the outer peripheral side of the frame body 2, the renovated pipe 120 can be additionally formed on the inner peripheral surface of the existing pipe 200 without a gap. Moreover, since the pipe making apparatus 1 has a substantially annular structure, the pipe making apparatus 1 does not block the inside of the existing pipe 200, and the rehabilitated pipe 120 even if the existing pipe 200 is in a water flow state. Can be formed.

  When the front end portion of the rehabilitation pipe 120 reaches the downstream manhole 202, the driving of the pipe making apparatus 1 is stopped. Then, the pipe making apparatus 1 is disassembled, and the frame body 2 is disassembled and carried out from the downstream manhole 202. Injecting a backfill material such as curable mortar into the gap between the rehabilitated pipe 120 and the existing pipe 200 and curing it completes the rehabilitation of the existing pipe 200.

(Other embodiments)
The pipe manufacturing apparatus 1 according to the present invention can be implemented in various other forms besides the above embodiment. Therefore, the present invention is not limited to the above embodiment.

  Fig.11 (a) and FIG.11 (b) are the front views which expand and show a part of the pipe manufacturing apparatus 1 which concerns on other embodiment of this invention. In this pipe manufacturing apparatus 1, the drive unit 4 is formed as a separate body from the frame body 2 and is attached to the frame body 2 as a configuration in which the arrangement position of the pinch roller 43 with respect to the fitting roller 5 can be changed. It is provided so that attachment or detachment is possible. The internal mechanism of the drive unit 4 is the same as that of the above embodiment, but the arrangement position of the pinch roller 43 can be changed by the attachment position of the drive unit 4 using the attachment 84.

  In the example shown in FIG. 11A and FIG. 11B, the drive unit 4 is not fixed to the first and second axial frames 27 and 28 and the support frame 29 in the frame body 2 in advance. It is formed separately from the frame body 2. With respect to the drive unit 4, the attachment 84 is configured in a plurality of types.

  For example, in the form shown in FIG. 11A, the fixture 84 made of a metal plate material includes the edge of the casing 45 of the drive unit 4, the support piece 271 of the first axial frame 27, and the second It is formed in a polygonal shape extending over the end face of the axial frame 28. In the first axial frame 27, a plurality of support pieces 271 are erected on the inner peripheral surface of the frame body 2. The polygonal mounting tool 84 is formed to have a size that covers the entire outer peripheral side of the casing 45 in the drive unit 4 and covers a substantially half part on the inner peripheral side.

  Further, in the form shown in FIG. 11B, the attachment 84 made of a metal plate material covers the entire outer peripheral side of the casing 45 in the drive unit 4, and is substantially “「 ”having a size that fits the support frame 29. It is formed in a letter shape.

  The drive unit 4 is provided with a plurality of connection holes 451 with the attachment 84. The first and second axial frames 27 and 28 and the support frame 29 are also provided with connecting holes (not shown). A plurality of connection holes 841 corresponding to these connection holes are formed in the attachment tool 84 at corresponding locations. The attachment 84 is installed between the frame body 2 and the drive unit 4 and is fastened to the frame body 2 by, for example, bolting through the connection holes 451 and 841 to fix the drive unit 4 to the frame body 2.

  The arrangement position of the pinch roller 43 shown in FIG. 11A is suitable for forming the rehabilitation pipe 120 having a relatively large pipe diameter, and it is possible to generate a reaction force on the profile 100 so as to be fitted well. it can. Also, the arrangement position of the pinch roller 43 shown in FIG. 11B is suitable for forming the rehabilitation pipe 120 having a relatively small diameter, and it is accurate without causing an excessive reaction force on the profile 100. Can be piped.

  The mounting position of the pinch roller 43 relative to the fitting roller 5 can be easily changed by attaching the drive unit 4 of the pipe making apparatus 1 to the frame body 2 via the attachment 84 at a desired fixed angle. It becomes possible to correspond to the existing pipe 200 of any pipe diameter. The shape of the mounting tool 84 is not limited to these illustrated shapes, and can be formed in various forms, and thus can correspond to various mounting forms of the drive unit 4. Further, since the drive unit 4 is detachably attached to the frame body 2 and the attachment work via the attachment tool 84 can be easily performed, the work required for assembly and disassembly is not required, and the work is completed in a short time. be able to.

  12 and 13 are front views showing a pipe making apparatus according to still another embodiment of the present invention. In the pipe making apparatus 1, as shown in FIG. 12, a guide member that defines the supply path of the profile 100 may be provided on the inner peripheral side of the frame body 2 in the front stage portion of the drive unit 4. In this case, the guide member 82 has an arcuate outer shape along the spiral path of the profile 100 supplied in a spiral shape, and is configured by a plate material having a rectangular or substantially U-shaped cross section. As shown in FIG. 13, the guide member 83 may be formed by assembling a plurality of rotatable rollers in a rectangular shape and forming an insertion passage for the profile 100 inside thereof. The profile 100 is smoothly guided to the drive unit 4 by being supplied along the guide members 82 and 83.

  By arranging guide members 82 and 83 on the inner periphery of the frame body 2 so as to guide the profile 100 to the drive unit 4 from the front in the direction of travel of the pipe making apparatus 1, the profile 100 can be applied to the pipe making apparatus 1. Adjustments can be made to mitigate the effect. That is, the supply path of the profile 100 is defined by the guide members 82 and 83 so that the reaction force generated in the profile 100 does not act in the direction of pushing the pipe making apparatus 1 forward. Thereby, when the profile 100 is fitted, it is possible to prevent the displacement and to securely fit the fitting convex portion 103 and the fitting concave portion 105.

  In the present invention, the profile 100 constituting the rehabilitation tube 120 is not limited to the profile 100 shown in FIGS. 14A and 14B, The structure with which the reinforcing material of another shape was mounted | worn may be sufficient. Further, as shown in FIGS. 15A and 15B, a profile 110 having a configuration in which adjacent main members 111 are joined together by a long band-like fitting member 115 to form a rehabilitation pipe 120. Also good. The main member 111 has a plurality of T-shaped ribs 113 on the substrate 112, and fitting grooves 114 are formed at both ends of the substrate 112. The fitting member 115 has two protrusions 116 fitted into the fitting grooves 114 of both the adjacent main members 111. Even in such a profile 110, a metal reinforcing material similar to the above may be attached.

  INDUSTRIAL APPLICABILITY The present invention can be suitably used as a pipe making apparatus for rehabilitating various existing pipes such as aged sewer pipes, water pipes, agricultural water pipes, and gas pipes using profiles.

DESCRIPTION OF SYMBOLS 1 Pipe manufacturing apparatus 2 Frame body 21 Link body 26 Linking link body 27 1st axial direction frame 28 2nd axial direction frame 29 Support frame 3 Link roller 4 Drive unit 43 Pinch roller 5 Fitting roller 81 Fixing member 81 Attachment Equipment 100 Profile 120 Rehabilitation pipe 200 Existing pipe

Claims (8)

This is a pipe making apparatus that forms a tubular shape by winding a long profile in a spiral shape while pressing the fitting portion of the profile that follows the fitting portion of the preceding profile from the inner peripheral side. And
A substantially annular frame body;
A fitting roller provided on the frame body and disposed on an inner peripheral side of a fitting region between a leading portion and a trailing portion of a wound profile;
A drive unit for supplying a profile from the inner peripheral side of the fitting region toward the fitting roller;
The drive unit includes at least one pair of pinch rollers composed of a pair of an outer surface roller and an inner surface roller that are rotationally driven across a profile, and is provided on the inner peripheral side of the frame body.
A pipe making apparatus characterized in that an arrangement position of the pinch roller with respect to the fitting roller can be changed. The pipe making apparatus according to claim 1,
The drive unit is formed separately from the frame body, and is detachably provided on the frame body via an attachment, and the arrangement position of the pinch roller can be changed depending on the installation position of the drive unit. A pipe making apparatus characterized by that. The pipe making apparatus according to claim 2,
The drive unit is provided with a plurality of connecting holes with the attachment, and the attachment is installed between the frame body and the drive unit to fix the drive unit to the frame body. apparatus. The pipe making apparatus according to claim 1,
The drive unit is provided so as to be rotatable with respect to the frame body, and the arrangement position of the pinch roller can be changed by fixing the drive unit within the rotation range. Pipe making equipment. The pipe making apparatus according to claim 4, wherein
A fixing member is disposed between the frame body and the drive unit, the fixing member is rotatably provided on the frame body, and a connection position between the drive unit and the fixing member can be changed. A pipe making apparatus characterized by that. The pipe making apparatus according to claim 5,
The pipe making apparatus, wherein the fixing member has a plurality of connecting holes for fixing the drive unit. In the pipe making apparatus according to any one of claims 1 to 6,
The pinch roller of the drive unit is a front stage portion of the fitting region and has a central angle 75 centered on the roller axis with respect to a virtual plane including the roller axis of the fitting roller and the axis of the frame body. A pipe making apparatus, wherein the pipe making apparatus is disposed in a space region up to °°. In the pipe making apparatus according to any one of claims 1 to 7,
A pipe making apparatus, characterized in that a guide member for defining a profile supply path is provided on an inner peripheral side of the frame body at a front stage portion of the drive unit.

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