JP5824409B2 - Rehabilitation pipe manufacturing method - Google Patents

Description

  The present invention relates to a pipe manufacturing method for manufacturing rehabilitation pipes for rehabilitating existing pipes such as aged sewer pipes, water pipes, agricultural water pipes, and gas pipes.

  A conventional pipe making apparatus is formed with a plurality of drive roller portions that are rotated by a hydraulic motor. The rehabilitation tube increases in weight as it is formed. Moreover, since the rehabilitation pipe contacts the existing pipe, the frictional resistance with the existing pipe increases as it is formed. For this reason, the driving force required to rotate the rehabilitation pipe gradually increases in the latter driving roller portion among the driving roller portions at a plurality of locations. On the other hand, the belt-shaped member is fed with the same driving force as that in the initial state in the driving roller portion in the previous stage. As a result, a difference occurs between the rotation speed of the rehabilitation pipe and the supply speed of the belt-shaped member. That is, the band-shaped member is excessively supplied as compared with the formation rate of the rehabilitation pipe, and it is easy to cause a problem that the diameter of the rehabilitation pipe gradually increases.

On the other hand, in the conventional pipe making apparatus 8 shown in FIG. 18, in addition to the plurality of drive roller portions 81 and 82, a tension roller portion 83 is provided above the support member (see, for example, Patent Document 1). The plurality of drive roller portions 81 and 82 and the tension roller portion 83 are driven to rotate by individual hydraulic motors. Each hydraulic motor is controlled so that its rotational speed is different from each other. That is, the conveyance speed of the belt-like member 85 is set slower between the tension roller portion 83 and the drive roller portion 82 than between the drive roller portions 81 and 82.
Thus, the belt-like member 85 is forcibly brought into pressure contact with the mandrel 84, and the diameter of the rehabilitation pipe is intended to be constant.

Japanese Patent Laid-Open No. 1-156041

  However, the conventional pipe making apparatus 8 has the following problems, and there is still room for improvement.

The pipe making apparatus 8 has a problem that the driving force of each hydraulic motor of the driving roller portions 81 and 82 is likely to be reduced by the braking force of the tension roller portion 83, and the length of the renovated pipe that can be formed is short. Therefore, in the said pipe manufacturing apparatus 8, it was necessary to carry out synchronous control of several hydraulic motors, and the complicated structure was needed.

Moreover, the said pipe making apparatus 8 is a structure which joins the strip | belt-shaped member 85 from an outer peripheral side, and forms a renovated pipe | tube, and if the braking force by the tension roller part 83 is insufficient even a little, the strip | belt-shaped member 85 conveyed will loosen. However, the conventional problem that the diameter of the rehabilitation pipe gradually increases cannot be solved.

The plurality of drive roller portions 81 and 82 are provided on the mandrel 84 at positions that are about 180 degrees apart from each other and are horizontally opposed. When the pipe making device 8 is to be installed in the invert 95 of the manhole 92, the drive roller portions 81 and 82 interfere with the invert 95. Therefore, the invert 95 and the periphery of the invert 95 must be dug deeply to form the accommodation space 86 for the drive roller portions 81 and 82, resulting in poor work efficiency.

The present invention has been made in view of such conventional problems, and is configured with a small number of parts without a complicated structure, and a rehabilitated pipe having a desired pipe diameter is accurately required. The present invention provides a method for producing a pipe that can be stably formed.

The pipe making method of the rehabilitated pipe according to the present invention is a pipe making method of forming a rehabilitated pipe by spirally winding a belt-like member with a pipe making apparatus, and the pipe making apparatus includes an annular frame and an annular frame. A plurality of rollers provided rotatably, a drive unit having an inner roller and an outer roller for sandwiching and joining a preceding part and a succeeding part of the band member, and the band member provided on an annular frame. A guide member for guiding, wherein the drive unit is disposed at a position higher than a horizontal plane including the axis of the annular frame, and the guide member is lower than a horizontal plane including the axis of the annular frame. Placed in position,
A pipe making apparatus is installed at the end of the pipeline to be rehabilitated, the belt-like member is introduced into the guide member, the belt-like member is introduced into the drive unit from the lower side of the drive unit, and the belt-like member is Wrapped around the outer surface of the plurality of rollers, the rear part is joined to the preceding part of the belt-like member from the inner peripheral side of the preceding part of the belt-like member to form a rehabilitation pipe, The rehabilitation pipe is rotated by driving, and the subsequent portion of the belt-shaped member is drawn into the pipe making apparatus, and the rehabilitation pipe is sent out into the rehabilitation target pipeline.

As a result, the subsequent part of the belt-shaped member is supplied by a path passing through the inner peripheral side of the extension of the rehabilitation pipe and is disposed adjacent to the preceding part of the belt-shaped member, so that it interferes with existing pipes and manholes in the process. Without being guided smoothly. Therefore, the belt-shaped member can be suitably supplied without being excessively supplied or insufficiently supplied. In addition, the belt-like member is joined to the preceding portion from the inner peripheral side, so that there is no inconvenience that the diameter of the rehabilitation pipe to be formed gradually increases, and the rehabilitation of the desired pipe diameter is not caused. The tube can be formed accurately and stably.

Giving a resistance to the belt-shaped member by compressing across a portion succeeding a preceding portion of the belt-shaped member in the state of being aligned in a spiral shape, transmitting power for subsequent portions of at least the belt-shaped member It is preferable to have an introduction unit having an inner surface roller and an outer surface roller, which includes a roller portion that does not.

As a result, the introduction unit is arranged in a spiral arrangement without transmitting power to at least the subsequent portion of the belt-like member, so that the drive unit can smoothly pull in the belt-like member and drive the drive unit. It is utilized without reducing power. In the introduction unit, the subsequent portion of the belt-like member is guided by the guide member and pulled in, and is disposed adjacent to the preceding portion of the belt-like member from the inner peripheral side. In this state, the strip-shaped member is joined and formed into the rehabilitation pipe, so that there is no inconvenience that the diameter of the rehabilitation pipe gradually increases, and a rehabilitation pipe having a desired pipe diameter can be formed accurately and stably. it can. And since it is the structure which does not reduce the driving force of a drive unit, it can be set as a simpler apparatus structure compared with the past, and it becomes possible to form the rehabilitation pipe | tube of the pipe length longer than before conventionally efficiently and stably. In addition, when installing a pipe making device in an invert in a manhole, the invert, the introduction unit and the drive unit do not interfere with each other, so the invert can be installed without cutting, the work efficiency is improved, and the problems of the conventional pipe making device All points can be eliminated.

In the pipe manufacturing method, the belt-shaped member has a main joint portion and a sub-joint portion. The main joint portion of the preceding portion and the subsequent portion are joined to each other from the inner peripheral side of the belt-like member, and then the sub-member is joined. It is preferable to join the joints.

Thereby, joining of a strip | belt-shaped member can be performed in two steps, reliable joining is attained, and a rehabilitation pipe | tube with high intensity | strength and reliability can be formed.

  According to the rehabilitated pipe producing method and rehabilitated pipe producing apparatus of the present invention, a rehabilitated pipe having a diameter set with a simple configuration can be stably produced to a length longer than before.

FIG. 1 is a cross-sectional view showing an underground pipe line that is rehabilitated using the pipe making apparatus according to the present invention. FIG. 2 is a perspective view showing a pipe manufacturing apparatus according to an embodiment. FIG. 3 is a front view of the pipe producing apparatus of FIG. FIG. 4 is a perspective view showing a first connecting member of the frame in the pipe producing apparatus. 5 (a) and 5 (b) show the frame, FIG. 5 (a) is a front view, and FIG. 5 (b) is a plan view. FIG. 6 is a perspective view showing a second connecting member of the frame in the pipe making apparatus. FIG. 7 is a side view of the introduction unit constituting the pipe making apparatus as viewed from the direction of the arrow X in FIG. FIG. 8 is an explanatory view showing a drive unit in the pipe making apparatus. FIG. 9 is a perspective view showing a state where a rehabilitation pipe is formed in the pipe making apparatus. FIG. 10 is an explanatory view schematically showing the pipe making apparatus and the pipe making method of the present invention. FIG. 11 is a schematic perspective view showing a state where the pipe making apparatus is installed in an invert of a manhole. FIG. 12 is a front view showing a pipe making apparatus according to another embodiment. FIG. 13 is an explanatory view showing an introduction unit in the pipe making apparatus of FIG. FIG. 14 is a perspective view showing a pipe manufacturing apparatus and a pipe manufacturing method according to still another embodiment. FIG. 15A and FIG. 15B show an example of a belt-like member, FIG. 15A is an explanatory view showing a state of joining, and FIG. 15B is an explanatory view showing a joined state. FIG. 16 is an explanatory diagram illustrating another example of the belt-shaped member. 17 (a) and 17 (b) show still another example of the belt-like member, FIG. 17 (a) is an explanatory view showing the joined state, and FIG. 17 (b) is a perspective view showing the joint portion of the belt-like member. FIG. FIG. 18 is a front view showing a conventional pipe making apparatus with a part broken away.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Pipe making equipment)
As shown in FIG. 1, the pipe making apparatus 1 continuously draws the belt-like member 100 and winds it in a spiral shape. The band-shaped members 100 are arranged adjacent to each other by the pipe making apparatus 1 and are joined to each other. Thereby, the strip-shaped member 100 forms the rehabilitation pipe 10. Moreover, the pipe manufacturing apparatus 1 rotates the rehabilitation pipe | tube 10 to the circumferential direction, and sends out the axial direction front of the existing pipe | tube 91. As shown in FIG. At the same time, a subsequent portion of the belt-like member 100 is joined to the rehabilitation pipe 10 to additionally form the rehabilitation pipe 10.

Specifically, as shown in FIGS. 2 and 3, the pipe making apparatus 1 includes a frame 2, a drive unit 4 provided on the frame 2, and an introduction unit 5.

The frame 2 includes a pair of front and rear annular plates 21 and a plurality of rollers 3 provided between the annular plates 21. These annular plates 21 are arranged at the front and back with an interval of about twice the width of the band-shaped member 100. The annular plate 21 is made of a plurality of plate materials and is integrally connected by a plurality of connecting members 23 and 25.

As shown in FIG. 3, the annular plate 21 is formed with the upper half portion 2 </ b> A by the inclined surface C slightly rotated counterclockwise in the horizontal plane passing through the center of the annular plate 21 when the pipe producing device 1 is viewed from the front. The lower half 2B can be divided into two parts. Further, the end edge portions separated by about 180 degrees between the upper half portion 2A and the lower half portion 2B are connected by the connecting material 23 or the connecting material 25.

As shown in FIG. 4, the first connecting member 23 is formed of a set of two, a joining plate 231 before and after joining the end portions of the annular plate 21, and a joining plate 232 that connects between these joining plates 231. With. A plurality of bolt holes for joining the annular plate 21 are formed in the joining plate 231. The connecting plate 232 defines the distance between the pair of front and rear annular plates 21. The two connecting members 23 are joined at a plurality of locations on the connecting plate 232. Thereby, between the connection plates 232 is supported in parallel.

 In the illustrated embodiment, the distance between the two connecting members 23 can be adjusted by the tightening amount of the central bolt 233 that connects the connecting plates 232 together. Thereby, the space | interval of 2 A of upper half parts and the lower half part 2B can be adjusted and connected, and the circumference of the flame | frame 2 can be adjusted. A coil spring can be interposed in the shaft portion of the bolt 233 to generate an elastic force between the two connecting members 23, thereby facilitating the adjustment work.

A plurality of rollers 3 are rotatably supported on the frame 2 at intervals in the circumferential direction. As shown in FIGS. 5A and 5B, the roller 3 is rotatably supported by a rotation shaft 31 spanned between the front and rear annular plates 21 via a bearing 32. The roller 3 is made of a synthetic resin or metal roller body. The roller 3 is formed to have a length that is approximately twice the width of the belt-like member 100. The outer diameter of the roller 3 is set so that the outer peripheral surface is located slightly outside the outer peripheral line of the annular plate 21. Thereby, the roller 3 contacts the flat surface of the strip-shaped member 100, that is, the inner peripheral surface of the rehabilitated tube 10. The roller 3 enables the belt-like member 100 to be smoothly wound and reduces the contact friction as much as possible.

 The roller 3 is disposed so as to be perpendicular to the lead angle of the belt-like member 100 constituting the rehabilitation pipe 10. For this reason, in the existing pipe 91, the formed rehabilitation pipe | tube 10 can be sent out ahead (pipemaking direction) with the drive unit 4. FIG.

In order to arrange these rollers 3 so as to be perpendicular to the lead angle of the belt-like member 100, for example, as shown in FIGS. 2 and 3, the upper half 2A and the lower half 2B of the frame 2 Of the connecting portions, one of the connecting portions positioned above the horizontal plane passing through the center of the annular plate 21 connects the upper half 2A and the lower half 2B while shifting in the axial direction.

6 and 7 show, as an example, a second connecting member 25 provided with an adjusting mechanism that connects the pair of front and rear annular plates 21 while shifting them in the axial direction (the tube axis direction of the rehabilitated tube 10). .

The second connecting member 25 is configured by two connecting members 251 being slidably coupled to each other. Each coupling body 251 includes a joining plate 252 that joins the end portions of the annular plate 21, and a joining plate 253 that connects these joining plates 252. One of the coupling bodies 251 holds the mutual interval by coupling the annular plates 21 constituting the upper half 2A, and the other couples the annular plates 21 constituting the lower half 2B. . One connecting body 251 is provided with a slide groove 254, and the other connecting body 251 is provided with a slider 255 that engages with the slide groove 254.

The second connecting member 25 is provided with a long bolt 256 so as to come into contact with the joining plate 252 of the other connecting body 251 from the end of the one connecting body 251. By rotating the long bolt 256, the slide amount of the coupling body 251 can be adjusted. The slidable coupling bodies 251 can be fixed by the bolts 257 of the slider 255.

As a result, the upper half 2A and the lower half 2B are connected, and the connecting body 251 can be adjusted by sliding in the tube axis direction while maintaining the mutual spacing of the annular plate 21 in the tube axis direction. . That is, the lower half 2B can be moved in the pipe making direction by a length substantially corresponding to the width dimension of the strip member 100 with respect to the upper half 2A. Then, with the lower half 2B moved, the upper half 2A and the lower half 2B are connected to form the frame 2.

Such a frame 2 is carried into a manhole 92 in a state of being divided into upper and lower parts of the upper half part 2A and the lower half part 2B, and is assembled in an annular shape at a pipe making position. Thereby, the pipe making apparatus 1 can be installed efficiently in a short time.

A drive unit 4 and an introduction unit 5 are provided in the upper half 2 </ b> A of the frame 2.

Among these, the drive unit 4 is attached to the approximate top of the upper half 2A. The drive unit 4 feeds the spiral belt-like member 100 whose inner diameter is regulated by being along the plurality of rollers 3 from both sides. As shown in FIG. 8, the drive unit 4 includes an inner surface drive roller 41 and an outer surface drive roller 42 that form a pair. Further, the drive unit 4 is a hydraulic motor 45 that rotationally drives the inner surface driving roller 41 and the outer surface driving roller 42 in mutually opposite directions via a speed reducer (for example, the gear 44 of the gear box 43) fixed to the frame 2. Is provided.

The rotation shaft of the inner surface driving roller 41 and the rotation shaft of the outer surface driving roller 42 are arranged so that the axial direction is orthogonal to the lead angle of the rehabilitation pipe 10. These rotary shafts are rotatably supported by the gear box 43 together with the output shaft of the hydraulic motor 45. As a result, when the hydraulic motor 45 is rotationally driven, the gear 44 fixedly meshed with the output shaft, the rotational shaft of the inner surface driving roller 41, and the rotational shaft of the outer surface driving roller 42 is engaged with the inner surface driving roller 41 and the outer surface driving roller. The rollers 42 are rotated in opposite directions. The inner surface driving roller 41 and the outer surface driving roller 42 sandwich the belt-like member 100 between them, and send them forward along a plurality of rollers 3 provided on the frame 2.

 The rotating shaft of the inner surface driving roller 41 is supported at both ends by the front and rear annular plates 21 so as to be rotatable. The rotating shaft of the outer surface driving roller 42 is cantilevered rotatably on a gear box 43 provided on the front annular plate 21.

The inner surface driving roller 41 has a length that is approximately twice the width of the belt-like member 100. The inner surface driving roller 41 is formed in a cylindrical shape with iron or the like. Further, the outer diameter of the inner surface driving roller 41 is set so that the outer peripheral surface is in contact with the smooth inner peripheral surface of the rehabilitation pipe 10 and rotates.

In the illustrated belt-like member 100, a plurality of ribs 102 having a T-shaped cross section are provided on a belt-like substrate 101 (see FIG. 15A). On one side edge portion of the substrate 101, a bonding convex portion 103 is erected. On the other side edge portion of the substrate 101, a stepped portion 104 having a thickness of the substrate 101 is formed so that the side edge portion of the substrate 101 provided with the bonding convex portion 103 can be disposed. The stepped portion 104 is provided with a bonding concave portion 105 into which the bonding convex portion 103 is fitted. Further, the strip-shaped member 100 may be formed with inclined ribs 106 that are inclined so as to be positioned on the protruding side of the bonding recess 105 as the distance from the substrate 101 increases. The inclined rib 106 is engaged with the rib 102 of the adjacent strip member 100.

The outer surface driving roller 42 includes a plurality of large diameter rollers 421 and a plurality of small diameter rollers 422. The large-diameter roller 421 has a width that can be inserted between the adjacent ribs 102 of the belt-like member 100 and is provided on the rotating shaft. The outer peripheral surface of the large-diameter roller 421 rotates between the adjacent ribs 102 of the belt-shaped member 100 in contact with the back surface of the substrate 101 of the belt-shaped member 100 (the surface on the side serving as the outer peripheral surface of the rehabilitation pipe 10).

 The small-diameter roller 422 is provided on the rotating shaft so as to correspond to the front end surface (substantially T-shaped portion) of each rib 102 of the belt-like member 100. The outer peripheral surface of the small-diameter roller 422 rotates in contact with the front end surface of the rib 102 of the belt-like member 100. The outer peripheral surface of the small diameter roller 422 is knurled. Thereby, the outer surface drive roller 42 sends out the joined strip-shaped member 100 (rehabilitation pipe | tube 10), without slipping.

In the pipe manufacturing apparatus 1, the drive source for rotating the inner surface drive roller 41 and the outer surface drive roller 42 of the drive unit 4 is not limited to the hydraulic motor 45, and may be an electric motor or an air motor. In addition to the gear 44, a chain sprocket or the like may be used as the speed reducer.

As shown in FIG. 2, the introduction unit 5 is provided in the front stage of the drive unit 4 in the upper half 2 </ b> A of the frame 2. The introduction unit 5 sandwiches the spiral belt-like member 100, positions the belt-like member 100 at the joint position between the joint concave portion 105 and the joint convex portion 103, or positions and joins them.

As shown in FIG. 2 and FIG. 7, the introduction unit 5 includes an inner roller 51 and an outer roller 52 that form a pair. As shown in FIG. 9, the introduction unit 5 is attached to the upper half 2 </ b> A of the frame 2, upstream of the drive unit 4, that is, upstream of the strip-shaped member 100 in the delivery direction. As shown in FIG. 10, both the introduction unit 5 and the drive unit 4 are disposed at a position above the horizontal plane H including the axis of the frame (and the rehabilitation pipe 10).

The rotation shaft of the inner roller 51 and the rotation shaft of the outer roller 52 are arranged so that the axial direction is orthogonal to the lead angle of the rehabilitation pipe 10. The rotating shaft of the inner roller 51 is supported at both ends by the front and rear annular plates 21 so as to be rotatable. The rotating shaft of the outer roller 52 is cantilevered by a support member 27 provided on the front annular plate 21 so as to be rotatable.

The introduction unit 5 does not include a power source that rotates the inner roller 51 and the outer roller 52. The inner surface roller 51 and the outer surface roller 52 sandwich the belt-like member 100 drawn between them. Further, as the belt-like member 100 is pulled out by the drive unit 4, the inner roller 51 and the outer roller 52 rotate in opposite directions.

The inner roller 51 has a length that is approximately twice the width of the belt-like member 100 and is formed in a cylindrical shape with iron or the like. The inner roller 51 is set to have an outer diameter so that the outer peripheral surface is in contact with the smooth inner peripheral surface of the rehabilitation pipe 10 and rotates. Thereby, the joining recessed part 105 of the strip | belt-shaped member 100 of the preceding rehabilitation pipe | tube 10 and the joining convex part 103 of the subsequent spiral strip | belt-shaped member 100 are positioned in the position to join, and also join.

The outer roller 52 preferably includes a plurality of large-diameter rollers 521 and a plurality of small-diameter rollers 522, similarly to the outer-surface driving roller 42. The outer peripheral surface of the large diameter roller 521 rotates in contact with the back surface of the substrate 101 of the belt-like member 100 on the side that becomes the outer peripheral surface of the rehabilitation pipe 10, and the outer peripheral surface of the small diameter roller 522 is on the side that becomes the outer peripheral surface of the rehabilitation pipe 10. It rotates in contact with the front end surface of the rib 102 of the belt-like member 100. The outer peripheral surface of the small diameter roller 522 is knurled. The outer roller 52 may be a cylindrical roller as with the inner roller 51.

 As described above, the drive unit 4 sends out the rehabilitation pipe 10 to which the belt-like member 100 is joined while rotating. On the other hand, the introduction unit 5 smoothly moves the rear portion of the belt-like member 100 with the preceding portion of the belt-like member 100 that has become the rehabilitation pipe 10 without causing resistance in accordance with the operation of the drive unit 4. Pull in. A space is formed in the frame 2 by connecting the upper half 2A and the lower half 2B while shifting in the tube axis direction. The belt-like member 100 is drawn into the introduction unit 5 through this space. As a result, the subsequent portion of the belt-like member 100 is sent from the introduction unit 5 to the drive unit 4.

The frame 2 is provided with a plurality of guide members 6 for guiding the belt-like member 100 to the introduction unit 5. As shown in FIGS. 2 and 9, the guide member 6 is formed by connecting a plurality of rod-like bodies or plate-like bodies into a rectangle, and has a space corresponding to the size of the band-like member 100 inside thereof. Thereby, the guide member 6 positions the front and back both surfaces and side edge part of the strip | belt-shaped member 100 so that it may not shake. The belt-like member 100 is inserted and held in the guide member 6 and guided to the introduction unit 5. The rod-shaped body constituting the guide member 6 may be a rotatable roller. Further, the guide member 6 may have a configuration in which two frame bodies are assembled in an L shape to guide the end portion of the band-shaped member 100, and is not limited to the above configuration.

One end portions of a plurality of guide members 6 are respectively attached to the annular plate 21 of the frame 2. The guide member 6 is equally disposed on the annular plate 21. The belt-like member 100 is supplied from the drum 94 and, as shown in FIGS. 9 and 10, is first guided by the guide member 6 attached to the upper half 2A, and then a plurality of members provided in the lower half 2B. The guide members 6 are sequentially guided. Thereby, the strip-shaped member 100 takes a supply path on the inner peripheral side (that is, the inner peripheral side on the outer extension of the rehabilitation pipe 10) from the outer shape of the frame 2.

The introduction unit 5 sandwiches the belt-like member 100 (following portion) drawn through the guide member 6 and the belt-like member 100 (leading portion) of the rotating rehabilitation pipe 10 together. The belt-like member 100 drawn into the introduction unit 5 rotates the inner surface roller 51 and the outer surface roller 52 of the introduction unit 5 in directions opposite to each other. As a result, the belt-like member 100 and the adjacent rehabilitation pipe 10 are sent out toward the drive unit 4.

In the introduction unit 5, when the belt-like member 100 is sent out, the joining convex portion 103 of the following belt-like member 100 and the joint concave portion 105 of the preceding belt-like member 100 are positioned at positions where they can be joined together. At the same time, they are joined together to form a tube.

The introduction unit 5 may have a configuration in which the band-shaped member 100 is simply positioned in a joinable arrangement without bonding. In that case, it is preferable to provide another mechanism for joining the belt-like member 100 in the process until the belt-like member 100 that has passed through the introduction unit 5 reaches the drive unit 4. For example, a downstream joining mechanism including a pair of rollers for joining the belt-like member 100 may be provided between the introduction unit 5 and the drive unit 4. Further, as will be described later, the introduction unit 5 may join the joining convex portion 103 and the joining concave portion 105 of the belt-like member 100, and the inclined rib 106 of the belt-like member 100 may be locked to the rib 102 in the subsequent joining mechanism. Well, it is not limited to the above configuration.

It is preferable that the pipe making apparatus 1 has a configuration in which the frame 2 is supported by the gantry 7. As shown in FIG. 11, the gantry 7 includes a plurality of horizontal members 71 and 72 and a plurality of columns 73. A gear box 43 is fixed to the horizontal member 71 whose both ends are supported by the column 73. Thereby, the frame 2 of the pipe making apparatus 1 is supported. By adjusting the connection height between the column 73 and the horizontal member 71, the frame 2 can be supported in a floating state.

(Pipe making method)
Next, a method for forming the rehabilitated pipe 10 using the above-described pipe manufacturing apparatus 1 will be described.

As shown in FIG. 1, the existing pipe 91 is provided with manholes 92 and 93 for each predetermined span. The rehabilitation pipe 10 is manufactured, for example, from one manhole 92 of the existing pipe 91 toward the other manhole 93. The drum 94 and the power unit 96 are installed on the ground on the start side manhole 92 side. As shown in FIG. 11, the gantry 7 that supports the pipe making apparatus 1 is installed in the invert 95 of the start side manhole 92.

The frame 2 is carried into the starting side manhole 92 in a state where the upper half 2A provided with the introduction unit 5 and the drive unit 4 and the lower half 2B are divided into two. The frame 2 is assembled in an annular shape in the start side manhole 92. At this time, the outer diameter of the frame 2 is set in accordance with the pipe diameter of the rehabilitation pipe 10.

The frame 2 of the pipe making apparatus 1 is fixed to the gantry 7 through a gear box 43. At this time, the vertical and horizontal positions of the pipe manufacturing apparatus 1 are adjusted, and the pipe manufacturing apparatus 1 is fixed to the invert 95 in a floating state. The hydraulic piping from the power unit 96 is connected to the hydraulic motor 45 of the drive unit 4.

When such a preparatory work is completed, the belt-like member 100 is pulled out from the outer peripheral side of the drum 94 arranged on the ground and pulled into the starting side manhole 92. The leading end of the belt-like member 100 is inserted into the guide member 6 provided on the frame 2 and guided to the introduction unit 5 of the pipe making apparatus 1. Further, the belt-like member 100 is inserted between the inner surface roller 51 and the outer surface roller 52 of the introduction unit 5.

Next, the leading end portion of the belt-like member 100 is inserted between the inner surface driving roller 41 and the outer surface driving roller 42 of the driving unit 4 and sent to the outer peripheral side of the roller 3 of the frame 2. Thereafter, the hydraulic motor 45 is rotationally driven to rotationally drive the inner surface driving roller 41 and the outer surface driving roller 42 in directions opposite to each other, and the sandwiched belt-like member 100 is sent out.

 The fed strip member 100 is wound along the roller 3. The belt-like member 100 is spirally wound, and when the leading end of the belt-like member 100 reaches the introduction unit 5 again, the belt-like member 100 is displaced toward the arrival side manhole 93 by an amount corresponding to the width. Therefore, the leading end portion of the strip member 100 can be inserted through the introduction unit 5 again.

At this time, as shown in FIG. 15A and FIG. 15B, the joint convex portion 103 of the succeeding strip member 100 is fitted into the joint recess 105 of the leading strip member 100 from the inner peripheral side ( Main joint). At the same time, the side edge portion (the side on which the bonding convex portion 103 is provided) of the substrate 101 of the subsequent strip-shaped member 100 is disposed on the step portion 104 of the preceding strip-shaped member 100. Further, the rib 102 on the side where the joining convex portion 103 of the subsequent belt-like member 100 is provided is locked to the inclined rib 106 of the preceding belt-like member 100 (sub-joining portion). Thereby, the adjacent strip | belt-shaped member 100 can be joined.

Next, the adjacent belt-like members 100 joined together are inserted into the drive unit 4 to form the rehabilitation pipe 10A for start. That is, the hydraulic motor 45 of the drive unit 4 is driven, and the adjacent belt-like members 100 joined to each other are sent out. Further, the belt-shaped member 100 is wound along the roller 3 and passed through the introduction unit 5 and the drive unit 4 a plurality of times to form the rehabilitation pipe 10A.

Subsequently, the hydraulic motor 45 of the drive unit 4 of the pipe manufacturing apparatus 1 is driven. The inner surface driving roller 41 and the outer surface driving roller 42 are driven to rotate while sandwiching the rehabilitation pipe 10A and the belt-like member 100 adjacent thereto. Along with this, the belt-like member 100 continuing to the rear end of the rehabilitation pipe 10 </ b> A is newly drawn into the introduction unit 5.

In the introduction unit 5, the regenerative pipe 10 </ b> A, that is, the joining concave portion 105 of the preceding belt-like member 100 formed in a spiral shape is disposed adjacent to the joining convex portion 103 of the following spiral belt-like member 100 from the inner peripheral side. Is done. Further, the side edge portion of the substrate 101 on the side where the joining convex portion 103 of the succeeding belt-like member 100 is provided is arranged and joined to the step portion 104 of the preceding belt-like member 100. Further, the rib 102 on the side where the joining convex portion 103 of the succeeding belt-like member 100 is provided is locked to the inclined rib 106 of the preceding belt-like member 100 (see FIGS. 15A and 15B).

By continuing the drive of the hydraulic motor 45 of the drive unit 4, the inner surface driving roller 41 and the outer surface driving roller 42 which are rotationally driven in opposite directions are joined to each other with the belt-shaped member 100, that is, the rehabilitation pipe 10 being the start rehabilitation pipe. It is inserted together with 10A, or the rehabilitation pipe 10 is inserted. Then, the rehabilitation pipe 10 added to the start rehabilitation pipe 10 </ b> A is sent out while rotating toward the reaching side manhole 93.

When the drive unit 4 sends out the rehabilitation pipe 10, the subsequent portion of the belt-like member 100 is newly drawn into the introduction unit 5. The introduction unit 5 positions and joins the joining convex portion 103 of the subsequent portion of the belt-like member 100 to the leading portion of the belt-like member 100, that is, the joint concave portion 105 of the belt-like member 100 that has become the rehabilitation pipe 10.

During this time, as shown in FIG. 9 and FIG. 10, the belt-like member 100 is guided by the guide member 6 and continues to be supplied by a path passing through the inner peripheral side of the extension of the rehabilitation pipe 10. . Further, in the process of sending the subsequent belt-like member 100 to the other side of the supply path, the preceding belt-like member 100 is fed from the inner peripheral side and aligned in a spiral shape. Therefore, it is possible to always join the band-like members 100 arranged in this way from the inner peripheral side of the preceding belt-like member 100 to form the rehabilitated pipe 10, and the rehabilitated pipe 10 is formed in the existing pipe 91 by the drive unit 4. Sent out.

In the pipe manufacturing apparatus 1, the drive source is only the hydraulic motor 45 of the drive unit 4. The pipe making apparatus 1 does not require a complicated control structure that synchronizes a plurality of hydraulic motors. For this reason, the pipe manufacturing apparatus 1 can be comprised by a very simple structure. Therefore, the pipe manufacturing apparatus 1 can be manufactured at low cost. Further, since the introduction unit 5 does not include a power unit such as a motor, the strip member 100 is not excessively supplied to the drive unit 4. For this reason, the supply amount and supply speed of the strip-shaped member 100 are suitably maintained. Therefore, the excessive supply of the strip member 100 is prevented, and the phenomenon that the diameter of the rehabilitation pipe 10 gradually increases is avoided.

In addition, the pipe manufacturing apparatus 1 does not generate a braking force that reduces the driving force of the hydraulic motor 45. Therefore, it is possible to prevent a phenomenon that the diameter of the rehabilitation pipe 10 is increased due to insufficient braking force. In addition, since all the driving force of the drive unit 4 can be used for feeding the rehabilitating pipe 10, the length of the rehabilitating pipe 10 formed at a time can be increased as compared with the conventional case.

The rehabilitation pipe 10 is produced while always in contact with the existing pipe 91 that is meandering on the uneven surface. The pipe making apparatus 1 is transmitted with vibration due to the lateral shake of the regenerated pipe 10. For this reason, the rehabilitation pipe | tube 10 tends to move up and down, right and left, etc. with respect to the fixed pipe manufacturing apparatus 1. FIG. The pipe making apparatus 1 supports the regenerated pipe 10 by sandwiching the regenerated pipe 10 at two places, that is, a place of the inner surface driving roller 41 and the outer surface driving roller 42 of the drive unit 4 and a place of the inner surface roller 51 and the outer surface roller 52 of the introduction unit 5. ing. Therefore, the pipe making apparatus 1 can suppress the vertical movement and the horizontal movement of the rehabilitation pipe 10, and can prevent the rehabilitation pipe 10 from deviating from the drive unit 4 by swinging in the vertical direction and the left-right direction. .

 When the rehabilitation pipe 10 is formed, since the belt-like member 100 is wound around the roller 3 of the frame 2 to produce the rehabilitation pipe 10, the inner diameter of the rehabilitation pipe 10 is always regulated. Therefore, the belt-like member 100 can be joined from the inner peripheral side of the adjacent belt-like member 100, and the disadvantage that the diameter of the rehabilitation pipe 10 gradually decreases does not occur.

The pipe making apparatus 1 is provided with a drive unit 4 and an introduction unit 5 at a position above a horizontal plane passing through the axis of the existing pipe 91. That is, as shown in FIG. 10, the drive unit 4 and the introduction unit 5 are disposed above the horizontal plane H including the axis of the frame 2 and the axis of the rehabilitation pipe 10. For this reason, when installing the pipe making apparatus 1 in the invert 95 of the manhole 92, the drive unit 4 and the introduction unit 5 do not interfere with the invert 95. Therefore, the work which cuts the invert 95 and its periphery, or repairs the cut part becomes unnecessary. Therefore, the installation work and removal work of the pipe manufacturing apparatus 1 can be performed efficiently, and the construction period can be shortened.

As a result, it is possible to smoothly form the rehabilitated tube 10 having a set desired pipe diameter by using the pipe making device 1 having a simple structure, and to remanufacture the rehabilitated tube 10 longer than the conventional one at a time. Can do.

After the rehabilitation pipe 10 is formed over the entire length of the rehabilitation target region of the existing pipe 91 as described above, the strip member 100 at the end of the rehabilitation pipe 10 is cut, the pipe making apparatus 1 is disassembled, and the start-side manhole 92 is disassembled. Remove from. Thereby, the pipe making operation is completed.

In the said embodiment, the case where the joining recessed part 105 of the precedent strip | belt-shaped member 100 and the joining convex part 103 of the succeeding strip | belt-shaped member 100 were joined while positioning each other in the introduction unit 5 was demonstrated. In the pipe manufacturing apparatus 1 and the pipe manufacturing method which concern on this invention, it is not limited to this, The strip | belt-shaped member 100 does not necessarily need to be joined.

For example, when the belt-like member 100 is pulled into the pipe making apparatus 1, the belt-like member 100 is drawn out from the drum 94. At this time, an operator produces the amount of the belt-like member 100 drawn from the drum 94 near the manhole 92. It may be adjusted to match the tube volume. The band-shaped member 100 is elastically deformed to a predetermined radius of curvature by being wound around the drum 94. Therefore, it is difficult for an operator to supply the belt-like member 100 without excess or deficiency in accordance with the amount of the renovated pipe 10 to be manufactured.

When the supply amount of the band-shaped member 100 is insufficient with respect to the amount of the regenerated pipe 10 manufactured, the subsequent portion of the band-shaped member 100 fed out from the drum 94 with respect to the band-shaped member 100 of the preceding regenerated pipe 10 103 moves in the center direction away from the joint recess 105 of the preceding belt-like member 100. Therefore, the case where the strip | belt-shaped member 100 cannot be joined is considered. However, even in such a case, the large-diameter roller 521 of the outer surface roller 52 of the introduction unit 5 is located between the ribs 102 in the subsequent portion of the belt-like member 100 and joins the preceding belt-like member 100 (rehabilitation pipe 10). The succeeding strip member 100 is positioned so that the joint convex portion 103 of the succeeding strip member 100 faces the recess 105. In this state, the belt-like member 100 is sent out toward the drive unit 4.

Therefore, the belt portion 100 is drawn into the drive unit 4 in a state where the subsequent portion of the belt-like member 100 is aligned with the preceding portion, and the inner surface driving roller 41 and the outer surface driving roller 42 of the drive unit 4 make these belt-like members 100 adjacent to each other. Put in the state. Thereby, the joining recessed part 105 and the joining convex part 103 of the strip | belt-shaped member 100 can be joined reliably, and the rehabilitation pipe | tube 10 can be formed. Thereby, the drive unit 4 can form the rehabilitation pipe | tube 10, and can send out toward the front, rotating the rehabilitation pipe | tube 10. As shown in FIG.

In the pipe making method according to the present invention, the position where the pipe making apparatus 1 is installed may be the inside of the manhole 92, or an open end of a vertical shaft or an existing pipe 91.

(Other forms)
The pipe making apparatus 1 and the pipe making method 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-described embodiment, and may be configured as shown in FIGS.

 In the pipe making apparatus 1 shown in FIGS. 12 and 13, the introduction unit 5 rotates the rotation shafts of the inner surface roller 53 and the outer surface roller 54, so that a reduction gear (for example, the gear 57 of the gear box 56) and the hydraulic motor 58 are driven. And. Thereby, the inner surface roller 53 and the outer surface roller 54 are rotationally driven in directions opposite to each other.

 As shown in FIG. 13, the rotation shaft of the inner surface roller 53 and the rotation shaft of the outer surface roller 54 are rotatably supported by the gear box 56 together with the output shaft of the hydraulic motor 58. When the hydraulic motor 58 is driven to rotate, gears 57 fixed to and meshed with the output shaft, the rotation shaft of the inner roller 53, and the rotation shaft of the outer roller 54, respectively, rotate the rotation shafts of the inner roller 53 and the outer roller 54 to each other. Rotate in the opposite direction. The inner surface roller 53 and the outer surface roller 54 sandwich the belt-like member 100 between them, and the leading portion and the trailing portion of the belt-like member 100 are spirally aligned.

In the introduction unit 5, the outer roller 54 is configured not to transmit power to the subsequent portion of the belt-like member 100. In the illustrated embodiment, the outer surface roller 54 includes a roller 54A and a roller 54B. The roller 54A is disposed in a substantially half portion of the outer roller 54 near the gear box 56. In other words, the roller 54 </ b> A is positioned so that the subsequent portion of the belt-shaped member 100 is positioned between the roller 54 </ b> A and the inner surface roller 53.

Similarly to the outer roller 52, the rollers 54 </ b> A and the rollers 54 </ b> B include a plurality of large diameter rollers 541 and a plurality of small diameter rollers 542. Among these, the roller 54 </ b> A is formed by reducing the outer diameter of the small-diameter roller 542 to a size that does not contact the rib 102 of the belt-like member 100. In addition, the outer peripheral surface of the small-diameter roller 542 of the roller 54A is formed with a smooth surface without being knurled. Accordingly, the roller 54A is sandwiched between the inner surface roller 53 and the belt-like member 100 without transmitting the rotational driving force. On the other hand, the roller 54B is configured such that the outer peripheral surface of the small-diameter roller 542 is knurled, and a rotational driving force can be transmitted by sandwiching the preceding portion of the belt-like member 100.

Even in the pipe manufacturing apparatus 1 according to this embodiment, the strip member 100 is not excessively supplied to the drive unit 4. As a result, the supply amount and supply speed of the belt-like member 100 are suitably maintained, and the phenomenon that the diameter of the rehabilitation pipe 10 gradually increases can be avoided, and the pipe can be accurately produced while maintaining a constant pipe diameter. it can.

The introduction unit 5 configured not to transmit power to at least the subsequent portion of the belt-like member 100 may have a configuration in which a bearing is interposed between the roller 54A of the outer roller 54 and the rotation shaft. Similarly, a bearing may be interposed between the inner roller 53 and the rotary shaft.

Moreover, the form shown in FIG. 14 may be sufficient as the pipe manufacturing apparatus 1 of this invention. This 21-tube manufacturing apparatus 1 includes an auxiliary roller 59 in order to join the leading portion and the trailing portion of the belt-like member 100 more reliably. The auxiliary roller 59 is disposed between the introduction unit 5 and the drive unit 4 of the frame 2.

The auxiliary roller 59 includes a base portion 591 attached to the frame 2, a shaft portion 592 extending from the base portion 591 to the outer peripheral surface of the frame 2, and a disk-shaped roller 593. The roller 593 is rotatably supported by the shaft portion 592. The roller 593 is formed with an outer diameter common to the large-diameter roller 543 shown in FIG. The roller 593 is positioned at a boundary portion between the adjacent belt-shaped members 100 and presses the sub-joining portion. That is, the inclined rib 106 of the preceding belt member 100 is engaged with the rib 102 of the trailing belt member 100 (see FIG. 15B).

As described above, the introduction unit 5 positions the band-shaped member 100 so that the leading portion and the subsequent portion of the band-shaped member 100 are bonded to each other, and bonds the band-shaped member 100 to each other. At this time, in the introduction unit 5, as shown in FIG. 15A and FIG. Fit from the side (main joint). However, it is not necessary to perform the joining (sub-joining portion) for locking the rib 102 of the belt-like member 100 to the inclined rib 106 of the preceding belt-like member 100. The belt-like member 100 to which the main joint portion is joined in the introduction unit 5 is sent out along the frame 2 and reaches the auxiliary roller 59. The auxiliary roller 59 presses the sub-joining portion of the belt-like member 100 by the roller 593, and the leading portion and the trailing portion are reliably joined. Thereby, the adjacent strip | belt-shaped member 100 can be joined reliably and firmly, and a rehabilitation pipe | tube with high reliability can be formed.

As described above, in the pipe making apparatus 1 shown in FIG. 14, the belt-like member 100 in a state of being securely and firmly joined is sent to the drive unit 4 through the introduction unit 5 and the auxiliary roller 59. In the driving unit 4, the inner surface driving roller 41 and the outer surface driving roller 42 sandwich and hold the rehabilitation pipe 10 in a state where the joining has been completed, and apply rotational force thereto. Thereby, a rotational force can be reliably transmitted to the rehabilitation pipe 10, and the rehabilitation pipe 10 can be smoothly promoted in the pipe axis direction from the pipe making apparatus 1 arranged at the end of the rehabilitation target pipe line. .

Moreover, in the pipe manufacturing apparatus 1 and the pipe manufacturing method which concern on this invention, the strip | belt-shaped member 100 which comprises the rehabilitation pipe | tube 10 is not limited to the strip | belt-shaped member 100 shown to Fig.15 (a) and FIG.15 (b), For example, The configuration shown in FIG. 16 may be used. 100 A of this strip | belt-shaped member is mounted | worn with the metal plate reinforcement 110 which bent the strip | belt-plate-shaped steel plate in cross-sectional substantially W shape etc. over the several rib 102. As shown in FIG.

Moreover, as shown in FIG. 17, the strip | belt-shaped member which joins the adjacent main strip | belt-shaped member 120 with the joining material 130, and forms a rehabilitation pipe | tube may be sufficient. The main belt-shaped member 120 has a plurality of ribs 122 having a T-shaped cross section on the substrate 121, and grooves 123 are formed at both ends of the substrate 121. The bonding material 130 has a fitting protrusion 131 that fits into the groove 123 of the main belt-shaped member 120.

DESCRIPTION OF SYMBOLS 1 Pipe manufacturing apparatus 2 Frame 21 Annular plate 3 Roller 4 Drive unit 41 Inner surface drive roller 42 Outer surface drive roller 44 Gear 45 Hydraulic motor 5 Introduction unit 51 Inner surface roller 52 Outer roller 6 Guide member 7 Base 10 Rehabilitation pipe 100 Strip member

Claims (2)

It is a pipe making method for forming a rehabilitation pipe by spirally winding a band-shaped member by a pipe making apparatus,
A pipe making apparatus includes an annular frame, a plurality of rollers rotatably provided on the annular frame, and an inner roller and an outer roller that sandwich and join a preceding portion and a succeeding portion of the belt-like member. And a guide member for guiding the belt-like member provided on the annular frame,
The drive unit is disposed at a position above a horizontal plane including the axis of the annular frame, and the guide member is disposed at a position below a horizontal plane including the axis of the annular frame,
Install the pipe making device at the end of the pipeline to be rehabilitated,
The belt-like member is introduced into the guide member, the belt-like member is introduced into the drive unit from the lower side of the drive unit, and the belt-like member is wound along the outer surface side of the plurality of rollers. A succeeding portion is joined to the preceding portion of the member from the inner peripheral side of the preceding portion of the belt-shaped member to form a rehabilitating tube, and the rehabilitating tube is rotated by driving of the drive unit, so A pipe making method of drawing the rehabilitation pipe into the rehabilitation target pipe line while drawing the pipe into the pipe making apparatus. The pipe producing apparatus according to claim 1, it gives resistance to the belt-shaped member by compressing across a portion succeeding a preceding portion of the belt-shaped member in the state of being aligned in a spiral shape, at least the belt-shaped member And an introduction unit having an inner surface roller and an outer surface roller, which includes a roller portion that does not transmit power to subsequent portions of the pipe.

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