WO2016175243A1 - 螺旋管の製管装置及び製管方法 - Google Patents
螺旋管の製管装置及び製管方法 Download PDFInfo
- Publication number
- WO2016175243A1 WO2016175243A1 PCT/JP2016/063199 JP2016063199W WO2016175243A1 WO 2016175243 A1 WO2016175243 A1 WO 2016175243A1 JP 2016063199 W JP2016063199 W JP 2016063199W WO 2016175243 A1 WO2016175243 A1 WO 2016175243A1
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- WO
- WIPO (PCT)
- Prior art keywords
- resistance
- pipe
- reaction force
- propulsion
- spiral tube
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/30—Lining or sheathing of internal surfaces using sheet or web-like material
- B29C63/32—Lining or sheathing of internal surfaces using sheet or web-like material by winding helically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/56—Winding and joining, e.g. winding spirally
- B29C53/58—Winding and joining, e.g. winding spirally helically
- B29C53/581—Winding and joining, e.g. winding spirally helically using sheets or strips consisting principally of plastics material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
- B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1655—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section a pipe being formed inside the old pipe by winding strip-material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
Definitions
- the present invention relates to a pipe manufacturing apparatus and a pipe manufacturing method for manufacturing a spiral pipe by winding a belt-like member in a spiral shape, and in particular, a pipe manufacturing apparatus that does not require an annular frame, a radial frame, or the like that regulates the diameter of the spiral pipe, and
- the present invention relates to a pipe making method using the pipe making apparatus.
- Patent Document 1 discloses an SPR (Spiral Pipe Renewal) method and a pipe making apparatus for the method as an example of a rehabilitation method.
- This pipe making apparatus is configured by winding a synthetic resin belt-like member spirally along an inner wall of an existing pipe, and adjacent edges of the preceding spiral tube portion and the subsequent belt portion formed in a spiral tube in advance. The two are joined by uneven fitting. Pipe making progresses when the pipe making apparatus is self-propelled in a spiral shape.
- the pipe making apparatus of Patent Document 1 is provided with an annular frame in which a plurality of guide rollers are connected in an annular shape so as to follow the inner peripheral surface of the existing pipe.
- An annular frame restricts the diameter of the spiral tube from being reduced.
- Patent Document 2 discloses a radial frame having a plurality of support arms extending radially as a diameter-reducing means. A guide roller at the tip of each support arm is pressed against the inner peripheral surface of the spiral tube.
- an object of the present invention is to provide an apparatus and a method capable of producing a spiral tube so as to have a desired diameter without a diameter regulating frame.
- the device of the present invention is a product that forms a spiral tube by joining edges adjacent to each other around the belt-like member while winding the belt-like member along a spiral winding direction.
- a pipe device Winding of the band-shaped member with respect to the succeeding band part or the preceding spiral pipe part that is arranged away from the joining process position where the joining is performed and follows the preceding spiral pipe part that has been piped in advance in the band-shaped member
- the resistance force is set to a size that allows the propulsion and the diameter of the leading spiral tube portion can be changed. Accordingly, the pipe can be reliably manufactured while adjusting the spiral pipe to have a desired diameter.
- the resistance applying unit can adjust the resistance stepwise or steplessly. Thereby, the spiral tube can be reliably adjusted to have a desired diameter. If the resistance force is increased, the diameter changing action can be increased. If the resistance force is reduced, the diameter changing action can be reduced.
- the propulsion reaction force imparting portion pushes the subsequent band portion toward the joining step position from the front in the traveling direction with respect to the joining step position, and the resistance force imparting portion is wound around the preceding spiral tube portion. It is preferable to apply the resistance force toward the advance side in the turning direction. As a result, a diameter expansion action can be imparted to the preceding spiral tube portion. When the leading spiral tube part itself tends to be reduced in diameter, the reduced diameter can be offset or reduced.
- the propulsion reaction force applying unit applies the propulsion reaction force toward the return side in the winding direction with respect to the preceding spiral tube unit, and the resistance force applying unit includes the propulsion reaction force in the preceding spiral tube unit.
- both the propulsion reaction force application portion and the resistance force application portion can be arranged on the preceding spiral tube portion. If the resistance applying portion is arranged on the return side (upstream side) in the winding direction with respect to the propulsion reaction force applying portion, a diameter expanding action can be applied to the preceding spiral tube portion. If the resistance applying portion is arranged on the advance side (downstream side) in the winding direction with respect to the propulsion reaction force applying portion, a diameter reducing action can be applied to the preceding spiral tube portion.
- the propulsion reaction force imparting portion and the resistance force imparting portion are arranged on the same side in the traveling direction with respect to the joining process position. Thereby, the pipe making apparatus can be made compact. It is more preferable that the propulsion reaction force application portion and the resistance force application portion are disposed forward of the traveling direction with respect to the joining process position.
- the resistance applying portion may include a rubbing member that is rubbed against the belt-shaped member. As a result, a resistance force can be reliably applied to the belt-shaped member.
- the resistance force applying unit may include a resistance roller that is rotated to generate the resistance force. As a result, a resistance force can be reliably applied to the belt-shaped member.
- the resistance force can be adjusted by rotating the resistance roller so that the speed can be adjusted.
- the method of the present invention is a pipe making method for forming a spiral tube by joining edges adjacent to each other in the circumference of the strip member while winding the strip member along a spiral winding direction, A joining step of joining the adjacent strips of the preceding spiral tube portion and the subsequent strip portion following the preceding spiral tube portion that has been previously produced in the belt-shaped member; A propulsion step for applying a propulsion reaction force for proceeding in the winding direction of the band-shaped member to the subsequent band or the preceding spiral tube at a position away from the bonding process position where the bonding is performed; Resistance force opposite to the propulsion reaction force along the winding direction due to friction with the belt-like member at the time of propulsion by the propulsion reaction force at a position away from the position where the propulsion reaction force is applied. Applying a resistance step to the belt-shaped member; It is provided with.
- the spiral tube can be formed to have a desired diameter without a diameter-reducing restriction frame such as an annular frame or a radial frame, and the tube manufacturing apparatus can be downsized.
- FIG.1 (a) is sectional drawing which shows a mode that the existing pipe is renewed with the pipe manufacturing apparatus which concerns on 1st Embodiment of this invention.
- FIG.1 (b) is sectional drawing which shows the existing pipe after the rehabilitation construction on a smaller scale than the figure (a).
- FIG. 2 is a perspective view of the rehabilitated pipe during construction in the first embodiment.
- FIG. 3 is a front view schematically showing the pipe producing apparatus of the first embodiment.
- Fig.4 (a) is sectional drawing of the strip
- FIG. 4B is a sectional view taken along line IVb-IVb in FIG.
- FIG. 5 is a cross-sectional view of the fitting force applying portion of the pipe producing apparatus taken along line VV in FIG.
- FIG. 6 is a cross-sectional view of the resistance applying portion of the pipe producing apparatus taken along line VI-VI in FIG.
- FIG. 7 shows a second embodiment of the present invention and is a cross-sectional view of a resistance applying portion of the pipe producing apparatus.
- FIG. 8 is a front view schematically showing a pipe producing apparatus according to the third embodiment of the present invention.
- FIG. 9 is a front view schematically showing a pipe producing apparatus according to the fourth embodiment of the present invention.
- FIG. 10A is a cross-sectional view of the joint portion of the pipe producing apparatus according to the fourth embodiment, taken along line Xa-Xa in FIG.
- FIG. 10B is a cross-sectional view of the joint portion of the pipe producing apparatus according to the fourth embodiment, taken along line Xb-Xb in FIG.
- FIG. 11 is a front view schematically showing a pipe making apparatus according to the fifth embodiment of the present invention.
- FIG. 12 is a perspective view of a rehabilitated pipe during construction in the fifth embodiment.
- Fig.13 (a) is sectional drawing of the strip
- FIG. 13B is a cross-sectional view of the resistance applying portion of the pipe producing apparatus according to the fifth embodiment, taken along line XIIIb-XIIIb in FIG.
- FIG. 14 is a cross-sectional view showing a modification in which the pipe manufacturing apparatus of the fifth embodiment is applied to the outer wall structure of a column.
- FIG. 15 is a front view schematically showing a pipe producing apparatus according to the sixth embodiment of the present invention.
- FIG.16 (a) is a side view which shows the resistance-force provision part of the pipe manufacturing apparatus which concerns on 7th Embodiment of this invention in a resistance-release state.
- FIG. 16B is a side view showing the resistance applying portion according to the seventh embodiment in a resistance applying state.
- FIG. 17 is a perspective view of a resistance applying portion according to the seventh embodiment.
- Fig.1 shows a mode that the aging existing pipe 1 is rehabilitated.
- the existing pipe 1 include a sewer pipe, a water pipe, an agricultural water pipe, and a gas pipe.
- a rehabilitation pipe 9 (spiral pipe) is lined on the inner wall of the existing pipe 1.
- the rehabilitation pipe 9 is provided over the entire length of the existing pipe 1 between the starting person hole 4 and the reaching person hole 4B.
- the rehabilitation tube 9 is constituted by a single long strip member 90 and has a spiral tubular shape.
- the belt-like member 90 is wound in a spiral shape, and adjacent edges are joined to each other with a different circumference.
- the material of the strip member 90 is a synthetic resin such as polyvinyl chloride.
- the belt-like member 90 in the middle of pipe production includes a leading spiral tube portion 91 and a trailing belt portion 92.
- the band-shaped member 90 is wound in, for example, a clockwise winding direction in FIG. 2, so that the spiral spiral leading spiral tube portion 91 is formed.
- the preceding spiral pipe portion 91 is disposed along the inner wall of the existing pipe 1 from the end of the existing pipe 1 on the starter hole 4 side (right side in FIG. 1A).
- the downstream zone 92 of the non-made pipe continues from the downstream end portion (successive zone continuous portion) 91e in the winding direction of the leading spiral tube portion 91.
- the trailing band portion 92 is passed through the inside of the leading spiral tube portion 91 and the inside of the starter hole 4.
- the belt-like member 90 includes a flat belt body 90a, a pair of fitting parts 93 and 94, and three (plural) reinforcing ribs 95.
- the front side surface of the band main body portion 90a is directed to the inner peripheral side (upper side in FIG. 4B) in the preceding spiral tube portion 91 and the rehabilitation tube 9.
- the back side surface of the band main body portion 90a is directed to the outer peripheral side (lower side in FIG. 4B) in the preceding spiral tube portion 91 and the rehabilitation tube 9.
- the 1st fitting part 93 is formed in the edge part of the width direction of the band main-body part 90a on the one side (the left side in the figure).
- the 1st fitting part 93 is dented in the shape of a ditch from the surface side (upper surface in the figure) of belt body part 90a.
- a second fitting portion 94 is formed at an edge portion on the other side in the width direction of the band body portion 90a (right side in the figure).
- the 2nd fitting part 94 has comprised the protruding item
- tube 9 (FIG.1 (b)) adjacent to each other by one round are unevenly fitted.
- a sealing agent 96 is provided near the second fitting portion 94 on the back side surface of the band main body 90a. Further, three reinforcing ribs 95 are formed in parallel on the back side surface of the band main body 90a. A reinforcing strip 97 such as a steel plate is embedded in the reinforcing rib 95.
- FIG. 1A and FIG. 2 illustrations of the fitting portions 93 and 94 and the reinforcing rib 95 in the belt-like member 90 are omitted.
- the pipe making apparatus 3 is disposed at the leading end portion (left end portion in FIG. 1A) in the extending direction of the preceding spiral tube portion 91.
- the pipe making apparatus 3 is propelled (self-propelled) along the winding direction (clockwise in FIG. 2) of the preceding spiral pipe portion 91.
- the width direction orthogonal to the traveling direction of the pipe making apparatus 3 is inclined by the lead angle of the preceding spiral pipe portion 91 with respect to the axis of the existing pipe 1.
- the renovated pipe 9 is manufactured from the belt-shaped member 90 by the pipe manufacturing apparatus 3.
- a joining process position 20p is set in the pipe manufacturing apparatus 3.
- the concave / convex fitting (joining) operation is performed at the joining process position 20p.
- the pipe making apparatus 3 includes a main body frame 3 a, a propulsion reaction force application unit 10, a fitting force application unit 20 (joining unit), and a resistance force application unit 30. ing.
- the three force applying portions 10, 20, and 30 are arranged apart from each other.
- the fitting force application part 20 is arranged at the joining process position 20p, and the propulsion reaction force application part 10 and the resistance force application part 30 are arranged apart from the joining process position 20p.
- the relative positions of the force applying portions 10, 20, and 30 are fixed by a main body frame 3a schematically shown by a two-dot chain line in the figure.
- the propulsion reaction force applying unit 10 is located in front of the tube-forming apparatus 3 in the traveling direction (left side in FIG. 3) with respect to the joining process position 20 p, and the leading spiral pipe part 91 and the existing pipe 1. They are spaced apart on the radially inner side (upper side in FIG. 3).
- the propulsion reaction force applying unit 10 includes a pair of propulsion rollers 13 and 13.
- the axis of the propulsion roller 13 is directed in the width direction of the pipe manufacturing apparatus 3 (a direction perpendicular to the paper surface in FIG. 3).
- the trailing belt 92 is sandwiched between the inner peripheral side (front side) and the outer peripheral side (back side) by the pair of propulsion rollers 13 and 13.
- a rotation drive mechanism (not shown) such as a motor is connected to at least one propulsion roller 13.
- the propulsion roller 13 is rotationally driven around its own axis so as to push the trailing belt portion 92 toward the joining process position 20p by the rotational drive mechanism.
- the fitting force applying unit 20 includes a fitting roller 23 and a fitting receiver 25.
- the fitting roller 23 is disposed on the inner peripheral side (the upper side in FIG. 3) of the preceding spiral tube portion 91.
- the axis of the fitting roller 23 is directed parallel to the axis of the propulsion roller 13 in the width direction of the pipe manufacturing apparatus 3 (the direction perpendicular to the plane of FIG. 3).
- the fitting roller 23 can be driven and rotated around its own axis.
- the fitting roller 23 does not need to be connected to a rotational drive mechanism such as a motor.
- the fitting receiver 25 is plate-shaped.
- the fitting receiver 25 is disposed on the outer peripheral side (the lower side in FIG. 3) of the preceding spiral tube portion 91 and faces the fitting roller 23 and is separated in the radial direction.
- a joining process position 20 p is formed between the fitting roller 23 and the fitting receiver 25.
- the trailing band portion 92 extends obliquely and outwardly with respect to the radial direction of the preceding spiral tube portion 91 from the propulsion reaction force applying portion 10 toward the fitting force applying portion 20.
- the fitting receiver 25 are inserted into the joining process position 20p.
- the fitting roller 23 and the fitting receiver 25 cause the second fitting portion 94 of the trailing band portion 92 to return once in the winding direction in the leading spiral tube portion 91. It is pushed and fitted into the first fitting part 93 of the different portion 91b.
- the fitting receiver 25 is provided with two (plural) first locking portions 25b.
- the first locking portion 25b is formed in a plate shape orthogonal to the fitting receiver 25, protrudes from the fitting receiver 25 toward the fitting roller 23, and travels along the pipe making apparatus 3 (in FIG. Extending in the orthogonal direction).
- the two first locking portions 25b are arranged in the width direction (left and right direction in FIG. 5) of the pipe manufacturing apparatus 3.
- the first locking portion 25b is locked with respect to the preceding spiral tube portion 91 so as to be movable in the winding direction (direction orthogonal to the plane of FIG. 5) and immovable in the width direction (left-right direction in FIG. 5). .
- the first locking portion 25b on one side (left side in FIG.
- the resistance applying portion 30 is disposed on the tip circumferential portion 91 a between the succeeding band continuous portion 91 e and the one-round difference portion 91 b in the leading spiral tube portion 91.
- the resistance-force provision part 30 is arrange
- the resistance applying portion 30 is disposed away from the joining process position 20p in the forward direction (left side in FIG. 3).
- the resistance force applying unit 30 is disposed on the return side (upstream side) in the winding direction with respect to the propulsion reaction force applying unit 10.
- the resistance applying portion 30 includes rubbing members 34 and 35 and a resistance adjusting bolt 36.
- the leading spiral tube portion 91 is sandwiched by the rubbing members 34 and 35 from both the inner and outer circumference sides.
- the inner periphery side rubbing member 34 is plate-shaped.
- the length of the rubbing member 34 along the width direction (the left-right direction in FIG. 5) of the pipe manufacturing apparatus 3 is approximately the same as or slightly shorter than the width of the belt-shaped member 90.
- the rubbing member 34 is disposed on the inner peripheral side of the preceding spiral tube portion 91.
- the outer peripheral rubbing member 35 is disposed on the outer peripheral side of the preceding spiral tube portion 91.
- the outer peripheral side rubbing member 35 includes a base plate 35a and two (plural) rubbing blocks 35b and 35b.
- the base plate 35 a is disposed so as to straddle between the reinforcing rib 95 and the first fitting portion 93 in the tip circumferential portion 91 a of the preceding spiral tube portion 91.
- a rubbing block 35b is provided on the surface of the base plate 35a facing the rubbing member 34 (upper surface in FIG. 6).
- the rubbing block 35b has a quadrangular cross section and extends in the traveling direction of the pipe manufacturing apparatus 3 (the direction orthogonal to the paper surface in FIG. 6).
- Each rubbing block 35 b is fitted between the two reinforcing ribs 95, 95 of the preceding spiral tube portion 91.
- the surface (upper surface in FIG. 6) facing the rubbing member 34 in the rubbing block 35b is applied to the back surface (lower surface in FIG. 6) of the band main body portion 90a of the preceding spiral tube portion 91.
- Both side surfaces of the rubbing block 35b in the width direction are in contact with the reinforcing ribs 95, respectively.
- the rubbing block 35b is locked with respect to the preceding spiral tube portion 91 so as to be movable in the winding direction (in the direction orthogonal to the paper surface in FIG. 6) and immovable in the width direction.
- the rubbing block 35b constitutes a “second locking portion”.
- the rubbing block 35 b that is, the second locking portion 35 b and the first locking portion 25 b are separated from each other in the traveling direction of the pipe manufacturing apparatus 3 (winding direction of the preceding spiral tube portion 91). Are arranged. These locking portions 25b and 35b constitute “locking means”.
- the main body frame 3a is provided with a resistance adjusting bolt 36 (resistance adjusting means).
- a resistance adjusting bolt 36 resistance adjusting means
- the rubbing member 34 is pressed against the inner peripheral surface of the band main body 90a in the preceding spiral tube 91.
- the outer peripheral side rubbing member 35 receives a pressing force.
- the rehabilitation pipe 9 is manufactured by the pipe making apparatus 3 as follows. As shown in FIG. 1A, it is assumed that a leading spiral pipe portion 91 is formed to some extent along the inner wall of the existing pipe 1. ⁇ Feeding out strip member 90> The belt-like member 90 (following belt portion 92) is introduced from the starter hole 4 to the pipe making apparatus 3 through the inside of the leading spiral tube portion 91. Preferably, the trailing band portion 92 is provided with a curl. Accordingly, the trailing band portion 92 can be easily passed through the inside of the leading spiral tube portion 91 and can be easily introduced into the pipe making apparatus 3.
- the propulsion roller 13 of the propulsion reaction force applying unit 10 is rotationally driven to push the trailing band portion 92 toward the joining process position 20p. That is, the subsequent band portion 92 is pushed from the front side (left side in FIG. 3) in the traveling direction to the upstream side (return side) in the winding direction of the band-shaped member 90 with respect to the joining process position 20p.
- This can be pipe producing device 3 to obtain a propulsion reaction force F 10 to proceed to the winding direction.
- This propulsion reaction force F 10 the pipe producing apparatus 3, the prior spiral tube portion 91 of the fixed, is propelled in the clockwise direction in the left turn 2 3 (self-propelled).
- the edges adjacent to each other in the circumference of the belt-like member 90 are joined while the belt-like member 90 is spirally wound.
- the leading spiral tube portion 91 tends to be reduced in diameter. The reason is considered to be related to the fact that the trailing band portion 92 is bent to a relatively large extent when it is introduced into the pipe making apparatus 3, the curl, and the like.
- the diameter expanding action By the diameter expanding action, the diameter reducing action of the preceding spiral tube portion 91 itself can be offset or reduced. Thereby, the diameter of the preceding spiral tube portion 91 can be kept constant, or the amount of diameter reduction can be reduced. Furthermore, by making the diameter expansion action larger than the diameter reduction action, the leading spiral pipe portion 91 can be strongly pressed against the inner wall of the existing pipe 1.
- a two-dot chain line in FIG. 2 shows a diameter-expanded state when it is assumed that the preceding spiral pipe portion 91 is not restrained by the existing pipe 1. Therefore, a diameter-reducing regulation frame such as an annular frame in Patent Document 1 or the like or a radial frame in Patent Document 2 or the like is unnecessary. In other words, it is not necessary to make the main body frame 3 a annular along the inner wall of the existing pipe 1, or it is not necessary to extend radially toward the inner wall of the existing pipe 1. As a result, the pipe manufacturing apparatus 3 can be made compact.
- the propulsion reaction force imparting portion 10 and the resistance force imparting portion 30 are on the same side in the traveling direction of the pipe manufacturing apparatus 3 (the circumferential direction of the preceding spiral tube portion 91) with respect to the fitting force imparting portion 20 and thus the joining process position 20p. Therefore, the pipe making apparatus 3 can be made more compact. As a result, even if the existing pipe 1 has a small inner diameter, or there is a deformed cross-sectional portion having a sharply bent portion (a large curvature) such as a squared portion or a bent portion in the existing tube 1, it can be sufficiently handled.
- the rehabilitating pipe 9 can be surely lined along the inner peripheral surface of the existing pipe 1.
- the magnitude of the resistance force F 30 can be increased or decreased by adjusting the pressing force of the rubbing member 34 against the preceding spiral tube portion 91 by the resistance force adjusting bolt 36.
- the resistance force F 30 is set to be large, it is strongly enlarged action.
- the resistance force F 30 is set small, it is possible to weaken the enlarged action.
- the rehabilitation pipe 9 can be expanded or contracted according to the change. If the inner wall of the existing pipe 1 has a bulge or depression such as a protrusion, the rehabilitation pipe 9 can be expanded or contracted to follow this.
- the propulsion reaction force applying portion 10 is It receives a force pulled from the trailing band portion 92 toward the starting person hole 4 side (right side in FIG. 1). For this reason, the clockwise moment in FIG.
- the pipe-making device 3 is brought into contact with the preceding spiral tube portion 91 by the contact between the first locking portion 25b and the reinforcing rib 95 and the contact between the rubbing block 35b (second locking portion) and the reinforcing rib 95. In contrast, it can be prevented from rotating.
- the pipe making apparatus 3 can be positioned in the axial direction of the preceding spiral pipe portion 91 (left and right direction in FIGS. 5 and 6) by the contact between the locking portions 25b and 35b and the reinforcing rib 95.
- FIG. 7 shows a second embodiment of the present invention.
- a fluid pressure cylinder 37 is provided in place of the resistance adjusting bolt 36 as the resistance adjusting means of the resistance applying unit 30B.
- the fluid pressure cylinder 37 may be a hydraulic cylinder or a pneumatic cylinder.
- the output of the fluid pressure cylinder 37 and the magnitude of the resistance force F 30 are related to the value of the diameter of the preceding spiral tube portion 91 in relation to the diameter reducing action of the preceding spiral tube portion 91 itself, and the preceding spiral tube portion. You may make it selectively set in two steps with the value with which the diameter of 91 is kept constant. Or you may make it selectively set in two steps, the value by which the diameter of the preceding spiral tube part 91 is maintained constant, and the value by which the preceding spiral tube part 91 is diameter-reduced.
- the value can be selectively selected in three stages: a value by which the diameter of the preceding spiral tube portion 91 is expanded, a value at which the diameter of the preceding spiral tube portion 91 is maintained constant, and a value by which the diameter of the preceding spiral tube portion 91 is reduced. You may make it set. Further may stop output of the fluid pressure cylinder 37, it can be the magnitude of the resistance force F 30 to zero. Thereby, the rehabilitation pipe
- FIG. 8 shows a third embodiment of the present invention.
- the resistance applying section 30C is configured by a pair of resistance rollers 33 and 33.
- the location of the resistance roller 33 and the resistance applying portion 30C is the same as that of the resistance applying portion 30 of the first embodiment (FIG. 3).
- the axis of the resistance roller 33 is directed parallel to the axis of the propulsion roller 13 in the width direction of the pipe making device 3C (direction perpendicular to the paper surface of FIG. 8).
- These resistance rollers 33, 33 sandwich the leading spiral tube portion 91 from the inner peripheral side and the outer peripheral side.
- a rotation drive mechanism (not shown) such as a motor is connected to at least one resistance roller 33.
- the resistance roller 33 is rotationally driven in the direction opposite to the propulsion roller 13 by this rotational drive mechanism.
- a resistance force F 30 toward the leading side in the winding direction (leftward in FIG. 3) is applied to the tip circumferential portion 91 a of the preceding spiral tube portion 91.
- the resistance force F 30 and the propulsion reaction force F 10 with respect to the trailing band portion 92 by the propulsion roller 13 can be combined to give the leading spiral tube portion 91 a diameter expanding action.
- You can increase or decrease the resistance force F 30 by adjusting the number of revolutions of the resistance roller 33. Thereby, the diameter expansion action can be strengthened or weakened.
- the resistance roller 33 may be driven and rotated by contact with the preceding spiral tube portion 91 and a frictional resistance generating portion may be provided on the rotation shaft of the resistance roller 33 or the like.
- the rotation drive mechanism for the resistance roller 33 may be omitted.
- the end face of the resistance roller 33 on the outer peripheral side (lower side in FIG. 8) is applied to the reinforcing rib 95 of the preceding spiral tube portion 91, or a flange is provided on the resistance roller 33, and this flange is used as the reinforcing rib.
- the pipe making device 3C may be positioned in the width direction of the tip circumferential portion 91a (the direction orthogonal to the plane of the drawing in FIG. 8).
- ⁇ Fourth embodiment> 9 and 10 show a fourth embodiment of the present invention.
- the fitting roller 23 (FIG. 3) is omitted from the joint portion 20D, and a fitting assisting roller 26 is provided instead.
- the auxiliary fitting roller 26 is arranged on the inner peripheral side of the preceding spiral pipe portion 91 and is arranged behind the fitting receiver 25 in the advancing direction of the pipe making device 3 (right side in FIG. 9). .
- the axis of the fitting auxiliary roller 26 is directed parallel to the axis of the propulsion roller 13 in the width direction of the pipe making device 3D (a direction orthogonal to the paper surface in FIG. 9).
- the fitting auxiliary roller 26 can be driven to rotate around its own axis.
- the fitting assist roller 26 does not need to be connected to a rotational drive mechanism such as a motor.
- the trailing band portion 92 is pushed toward the joining process position 20p on the fitting receiver 25.
- the pushing force causes the second fitting portion 94 of the trailing band portion 92 and the first fitting portion 93 of the one-round difference portion 91 b of the leading spiral tube portion 91 to move. Can be fitted.
- the tip circumferential portion 91a transferred from the trailing band portion 92 is further pushed toward the outer peripheral side (lower side in FIG. 10B) by the fitting auxiliary roller 26. Accordingly, as shown by a two-dot chain line in FIG. 10A, even when the fitting on the fitting receiver 25 is insufficient, the fitting portion 93, 94 can be securely fitted to each other. When the fitting portions 93 and 94 are securely fitted on the fitting receiver 25 (solid line in FIG. 10A), the fitting auxiliary roller 26 may be omitted.
- the present invention can provide not only a diameter expanding action to the leading spiral tube portion 91 but also a diameter reducing action.
- ⁇ Fifth Embodiment> 11 to 13 show a fifth embodiment of the present invention.
- the pipe making apparatus 3E according to the fifth embodiment includes a propulsion reaction force applying unit 10E, a fitting force applying unit 20E, a resistance applying unit 30E, and a trailing belt guide roller 43. I have.
- the propulsion reaction force applying unit 10E is disposed at the same location as the resistance applying unit 30 of the first embodiment (FIG. 3).
- the propulsion reaction force imparting portion 10E is disposed on the front peripheral portion 91a of the preceding spiral tube portion 91 away from the joining process position 20p in the forward direction (leftward in FIG. 11) of the pipe making device 3E. ing.
- the propulsion reaction force applying unit 10E includes a pair of propulsion rollers 13E and 13E.
- the axis of the propulsion roller 13E is directed in the width direction of the pipe making device 3E (a direction perpendicular to the paper surface in FIG. 11).
- the axial length of the propulsion roller 13E is approximately the same as the width dimension of the belt-like member 90E.
- a pair of propulsion rollers 13E and 13E sandwich the leading spiral tube portion 91 from the inner peripheral side and the outer peripheral side.
- a rotation drive mechanism (not shown) such as a motor is connected to at least one propulsion roller 13E. By the rotational drive mechanism, the propulsion roller 13E is rotationally driven so as to push the preceding spiral tube portion 91 toward the joining process position 20p to the return side (right side in FIG. 11) in the winding direction.
- a pair of subsequent belt guide rollers 43 and 43 are arranged at a position away from the propulsion reaction force applying portion 10 ⁇ / b> E radially inward of the existing pipe 1 (upper side in FIG. 11). Yes. That is, the trailing belt guide roller 43 is disposed at the same location as the propulsion reaction force applying unit 10 of the first embodiment (FIG. 3). The axis of the trailing belt guide roller 43 is directed in the width direction of the pipe making device 3E (the direction orthogonal to the paper surface in FIG. 11). The trailing belt guide roller 43 can be driven to rotate around its own axis. The trailing belt guide roller 43 need not be connected to a rotational drive mechanism such as a motor. A pair of subsequent belt guide rollers 43, 43 sandwich the subsequent belt portion 92 from both sides.
- the fitting force provision part 20E is arrange
- the fitting force application part 20E has a pair of fitting rollers 23E and 23E.
- the axis of the fitting roller 23E is directed in the width direction of the pipe making device 3E (the direction orthogonal to the paper surface in FIG. 11).
- the axial length of the fitting roller 23E is approximately the same as the width dimension of the belt-like member 90E.
- the fitting roller 23E can be driven to rotate around its own axis.
- the fitting roller 23E does not need to be connected to a rotational drive mechanism such as a motor.
- a trailing band portion 92 is inserted at a joining process position 20p between the pair of fitting force applying portions 20E and 20E. At the joining process position 20p, the adjacent edges of the subsequent band portion 92 and the one-half different portion 91b of the preceding spiral tube portion 91 are joined together.
- the resistance-force provision part 30E is arrange
- the propulsion reaction force imparting portion 10E and the resistance force imparting portion 30 are disposed on opposite sides of the traveling direction of the pipe manufacturing apparatus 3E (the circumferential direction of the preceding spiral tube portion 91) across the joining process position 20p.
- the resistance applying portion 30E is disposed on the advance side (downstream side) in the winding direction with respect to the propulsion reaction force applying portion 10E.
- the point that the resistance applying portion 30E includes the inner peripheral side rubbing member 34 and the outer peripheral side rubbing member 35 is the same as in the first embodiment (FIGS. 1 to 7). .
- the width dimension (left and right dimension in FIG. 13B) of the rubbing members 34 and 35 is the same as or shorter than the width dimension of the belt-like member 90E.
- a tip end circumferential portion 91 a of the leading spiral tube portion 91 is sandwiched between the rubbing members 34 and 35.
- the sub-block setting projection 32 is directed to the inner peripheral side of the preceding spiral tube portion 91 (upper in FIG. 13B). It is provided to protrude.
- an extended edge 98 is formed on the belt-like member 90E in the fifth embodiment.
- the extended edge portion 98 extends obliquely from the first fitting portion 93 to the outside in the width direction (left and right in FIG. 13) of the belt-like member 90E and the radially outer side (lower side in FIG. 13) of the rehabilitation pipe 9. Yes.
- the extended edge portion 98 fits into a step 95 d between the main portion 95 a and the protruding portion 95 b of the reinforcing rib 95 that is adjacent to the rehabilitating tube 9 at a different circumference.
- the main lock 9a is configured by the first fitting portion 93 and the second fitting portion 94 fitted to each other.
- a sub-block 9b is configured by the extended edge portion 98 and the step 95d fitted to each other.
- the rehabilitation pipe 9 is manufactured as follows. As shown in FIG. 11, by rotating and driving the propulsion rollers 13E and 13E of the propulsion reaction force imparting section 10E, the leading spiral tube section 91 is moved toward the joining process position 20p on the return side in the winding direction (right side in FIG. 11). ).
- This propulsion reaction force F 10 the pipe producing apparatus 3E is, the prior spiral tube portion 91 of the fixed, proceeds (11 leftward) direction of travel of the winding direction to.
- the subsequent belt portion 92 is sequentially introduced between the fitting rollers 23E of the fitting force applying portion 20E (joining process position 20p).
- the second fitting portion 94 of the trailing band portion 92 is fitted with the first fitting portion 93 of the one-round difference portion 91b of the leading spiral tube portion 91, and the main lock 9a is engaged.
- the extending edge portion 98 of the one-round difference portion 91 b is hooked on the tip end portion of the protruding portion 95 b of the trailing band portion 92.
- the extended edge portion 98 is not moved until it is fitted to the step 95d, and the sub-block 9b is not hung.
- the resistance applying section 30E is rubbed against the preceding spiral pipe section 91.
- a resistance force F 30 in the opposite direction of the winding direction from the propulsion reaction force F 10 that is, the advance side in the winding direction (left side in FIG. 11) is applied to the preceding spiral tube portion 91.
- the application position of the resistance force F 30 in the preceding spiral tube portion 91 is on the advance side (downstream side) in the winding direction with respect to the application position of the propulsion reaction force F 10 .
- a diameter reducing action can be exerted on the preceding spiral tube portion 91, contrary to the first embodiment (FIG. 3).
- the fitting portion 93 of the main lock 9a, 94 can slide in the winding direction (circumferential direction of the preceding spiral tube portion 91), and the diameter reducing action can be obtained reliably.
- the sub-block setting protrusion 32 pushes the extended edge portion 98 toward the inner peripheral side (the upper side in FIG. 13B).
- the extended edge portion 98 is fitted into the step 95d.
- the sub-block 9b can be used.
- the slip can be suppressed on the upstream side (return side) in the winding direction with respect to the resistance applying portion 30E.
- the pipe manufacturing apparatus 3E for example, when the band-shaped member 90E tends to expand in diameter, the diameter expansion can be suppressed. Further, as shown in FIG.
- the strip-shaped member 90 ⁇ / b> E is spirally formed in close contact with the outer peripheral surface of the column 5 by using the pipe manufacturing device 3 ⁇ / b> E. Can be wound.
- FIG. 15 shows a sixth embodiment of the present invention.
- the pipe making apparatus 3F of the sixth embodiment includes a propulsion reaction force applying unit 10F, a fitting force applying unit 20, and a resistance applying unit 30F.
- the propulsion reaction force applying unit 10F has a pair of propulsion rollers 13F and 13F, similar to the propulsion reaction force application unit 10E of the fifth embodiment (FIG. 11), and is manufactured from the joining process position 20p of the fitting force application unit 20.
- the tube device 3F is arranged away from the front in the traveling direction (left side in FIG. 15). A leading spiral tube portion 91 is sandwiched between the propulsion rollers 13F and 13F.
- the propulsion roller 13F is rotationally driven by a rotational drive mechanism (not shown) so as to push the leading spiral tube portion 91 toward the joining process position 20p. With this pressing force as a reaction force, the pipe making apparatus 3F is pushed leftward in FIG.
- the resistance force application unit 30F is disposed at the same position as the propulsion reaction force application unit 10 of the first embodiment (FIG. 3). That is, the resistance applying portion 30F is disposed away from the joining process position 20p in the forward direction of the pipe making device 3F (leftward in FIG. 15) and in the radial direction of the preceding spiral tube portion 91 (upper and lower in FIG. 15). Has been. A trailing band portion 92 is sandwiched between a pair of resistance rollers 33F and 33F of the resistance applying portion 30F. The resistance roller 33F is rotationally driven by a rotational drive mechanism (not shown) in a direction that pulls the trailing band portion 92 in a direction opposite to the joining process position 20p. As a result, a diameter reducing action can be imparted to the preceding spiral tube portion 91.
- the pipe manufacturing apparatus 3F (FIG. 15) has substantially the same structure as the pipe manufacturing apparatus 3C of the third embodiment (FIG. 8). By reversing the rotation direction of the propulsion roller 13 and the resistance roller 33 of the pipe manufacturing apparatus 3C (FIG. 8), the pipe manufacturing apparatus 3F (FIG. 15) can be obtained. Therefore, by using the single pipe making device 3C and rotating the propulsion roller 13 and the resistance roller 33 in the normal direction or the reverse direction, it is possible to make the diameter expanding action or the diameter reducing action work.
- ⁇ Seventh embodiment> 16 and 17 show a seventh embodiment of the present invention.
- the seventh embodiment relates to a modification of the resistance applying portion and the belt-like member.
- a reinforcing band 99 is attached to the band-shaped member 90G of the seventh embodiment.
- the reinforcing strip 99 is made of a metal plate such as a steel plate and has a substantially M-shaped cross section.
- the reinforcing strip 99 includes a pair of grooves 99b and 99b and a central convex frame portion 99a having a U-shaped cross section between the grooves 99b and 99b. This reinforcing band 99 is fitted between the two reinforcing ribs 95G of the band-shaped member 90G.
- the resistance applying portion 30 ⁇ / b> G of the seventh embodiment includes a body 31 and a pair of rubbing members 38 and 39.
- the body 31 is fixed to the main body frame 3a.
- a fixed rubbing member 38 and a movable rubbing member 39 protrude from the body 31 toward the band-shaped member 90G.
- the fixed rubbing member 38 and the movable rubbing member 39 are arranged apart from each other in the width direction of the body 31 (left and right in FIG. 16).
- the fixed rubbing member 38 is fixed to the body 31.
- the movable rubbing member 39 is slidable in the width direction of the body 31, and as a result, is movable toward and away from the fixed rubbing member 38.
- the body 31 is provided with a resistance adjusting bolt 36 (resistance adjusting means).
- the movable rubbing member 39 can be adjusted in the width direction of the body 31 by the resistance adjusting bolt 36.
- the resistance applying portion 30G is disposed on the outer peripheral side (lower side in FIG. 16) of the belt-like member 90G.
- the fixed rubbing member 38 and the movable rubbing member 39 are inserted into the pair of grooves 99 b of the reinforcing strip 99.
- FIG. 16 (b) when the movable rubbing member 39 is approached toward the fixed rubbing member 38 by the resistance adjusting bolt 36, the rubbing members 38, 39 are attached to the reinforcement band 99. It is pressed against both side portions of the central convex frame portion 99a. Thereby, friction occurs between the reinforcing strip 99 and the rubbing member 38 and 39, the resistance force F 30 acts.
- the fluid pressure cylinder 37 see FIG. 7) provided, and to adjust the pressing force and hence resistance force F 30 of the movable rubbing member 39 by the fluid pressure cylinder 37 Also good.
- the propulsion reaction force application part may be arranged in the subsequent band part 92, and the resistance force application part may be arranged in the subsequent band part 92 on the bonding process position 20p side with respect to the propulsion reaction force application part.
- Locking means (first and second locking portions) for positioning and rotation prevention may be provided in the main body frame 3a. You may combine the element of several embodiment.
- the resistance applying unit 30 of the fourth embodiment (FIG. 9) may be replaced with the resistance applying unit 30C of the third embodiment (FIG. 8). You may apply the fitting force provision part 20E of 5th Embodiment (FIG. 11) to the fitting force provision part of other embodiment.
- the belt-like member 90E (FIG. 13) of the fifth embodiment may be applied.
- a belt-like member 90 (FIG. 4) similar to that of the first embodiment may be applied.
- the resistance applying section 30G of the seventh embodiment (FIG. 16) can be applied as the resistance applying section of each of the first to sixth embodiments.
- the arrangement portion of the resistance force applying portion 30E in the preceding spiral tube portion 91 is set on the return side (upstream side) in the winding direction from the arrangement portion of the propulsion reaction force applying portion 10E.
- the propulsion reaction force applying unit 10E and the resistance applying unit 30E are on the same side (preferably in the traveling direction) in the circumferential direction of the spiral tube 9 with respect to the joining process position 20p. It may be arranged in front of.
- the joint portions corresponding to the fitting portions 93 and 94 of the belt-like member 90 may be made separately from the belt body 90a.
- the band main body 90a and the joining portion may be joined before or during pipe making.
- the joining portion may be formed so as to straddle between adjacent edges adjacent to the belt main body portion 90a in one round and to be joined to these edges.
- the present invention can be applied to the rehabilitation construction of aging existing pipes such as sewer pipes, water pipes, agricultural water pipes, and gas pipes.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Pipe Accessories (AREA)
Abstract
Description
本発明は、前記事情に鑑み、径規制フレームが無くても、螺旋管を所望の径になるよう製管可能な装置及び方法を提供することを目的とする。
前記接合が行われる接合工程位置から離れて配置され、前記帯状部材における先行して製管された先行螺旋管部に続く後続帯部又は前記先行螺旋管部に対して、前記帯状部材の巻回方向に進むための推進反力を付与する推進反力付与部と、
前記推進反力付与部から離れて配置され、前記推進反力による推進時における前記帯状部材との間の摩擦によって、前記巻回方向に沿って前記推進反力とは逆向きの抵抗力を前記帯状部材に付与する抵抗力付与部と、
を備えたことを特徴とする。
これによって、径規制フレームを省略でき、かつ螺旋管を所望の径になるよう製管できる。
これによって、螺旋管を所望の径になるよう調節しながら、確実に製管できる。
これによって、先行螺旋管部に拡径作用を付与できる。先行螺旋管部自体が縮径する傾向がある場合、縮径を相殺又は減殺させることができる。
これによって、推進反力付与部と抵抗力付与部とを共に先行螺旋管部上に配置できる。抵抗力付与部を推進反力付与部よりも前記巻回方向の戻し側(上流側)に配置すれば、先行螺旋管部に拡径作用を付与できる。抵抗力付与部を推進反力付与部よりも前記巻回方向の進み側(下流側)に配置すれば、先行螺旋管部に縮径作用を付与できる。
これによって、製管装置をコンパクトにできる。前記推進反力付与部と前記抵抗力付与部とが、前記接合工程位置に対して前記進行方向の前方に配置されていることが、より好ましい。
これによって、帯状部材に抵抗力を確実に付与できる。
これによって、帯状部材に抵抗力を確実に付与できる。抵抗ローラを速度調節可能に回転駆動させることで、抵抗力の大きさを調節できる。
これによって、製管装置を先行螺旋管部に対して前記幅方向に位置決めできる。かつ、後続帯部等からの外力によって製管装置に回転モーメントが作用したとしても、製管装置が回転するのを阻止できる。
前記帯状部材における先行して製管された先行螺旋管部に続く後続帯部と前記先行螺旋管部との前記隣接する縁どうしを接合する接合工程と、
前記接合が行われる接合工程位置から離れた位置において、前記後続帯部又は前記先行螺旋管部に対して、前記帯状部材の巻回方向に進むための推進反力を付与する推進工程と、
前記推進反力を付与する位置から離れた位置において、前記推進反力による推進時における前記帯状部材との間の摩擦によって、前記巻回方向に沿って前記推進反力とは逆向きの抵抗力を前記帯状部材に付与する抵抗工程と、
を備えたことを特徴とする。
<第1実施形態>
図1(a)は、老朽化した既設管1を更生する様子を示したものである。既設管1としては、下水道管、上水道管、農業用水管、ガス管等が挙げられる。既設管1の内壁に更生管9(螺旋管)がライニングされている。図1(b)に示すように、更生管9は、発進人孔4から到達人孔4Bまでの間の既設管1の全長にわたって設けられる。更生管9は、長尺の1本の帯状部材90によって構成され、螺旋管状になっている。帯状部材90が、螺旋状に巻回され、かつ一周違いに隣接する縁どうしが接合されている。帯状部材90の材質は、例えばポリ塩化ビニル等の合成樹脂である。
なお、図1(a)及び図2においては、帯状部材90における嵌合部93,94及び補強リブ95等の図示が省略されている。
更に、帯状部材90の巻回方向に沿って、抵抗力付与部30は、推進反力付与部10よりも前記巻回方向の戻り側(上流側)に配置されている。
図1(a)に示すように、既設管1の内壁に沿って先行螺旋管部91がある程度形成されているものとする。
<帯状部材90の繰り出し>
帯状部材90(後続帯部92)を、発進人孔4から先行螺旋管部91の内部を経て製管装置3へ導入する。好ましくは、後続帯部92には巻き癖を付ける。これによって、後続帯部92を、先行螺旋管部91の内部に通し易くでき、かつ製管装置3に導入し易くできる。
図3に示すように、推進反力付与部10の推進ローラ13を回転駆動することで、後続帯部92を接合工程位置20pへ向けて押す。つまり、後続帯部92を、接合工程位置20pよりも進行方向の前側(図3において左側)から帯状部材90の巻回方向の上流側(戻り側)へ押す。これによって、製管装置3が巻回方向に進むための推進反力F10を得ることができる。この推進反力F10によって、製管装置3が、固定の先行螺旋管部91に対して、図3において左方向ひいては図2において時計回りに推進(自走)される。
製管装置3が進むのに伴って、後続帯部92が、順次、嵌合力付与部20の嵌合ローラ23と嵌合受け25との間(接合工程位置20p)へ導入される。更に、嵌合ローラ23と嵌合受け25とによって、後続帯部92の第2嵌合部94が先行螺旋管部91の一周違い部分91bの第1嵌合部93に押し込まれる。これによって、図4(b)において二点鎖線にて示すように、後続帯部92ひいては後続帯連続端部91eの第2嵌合部94が一周違い部分91bの第1嵌合部93と嵌合される。このようにして、帯状部材90が螺旋状に巻回されながら、帯状部材90の一周違いに隣接する縁どうしが接合される。
このとき、先行螺旋管部91が縮径する傾向がある。その要因としては、後続帯部92が製管装置3に導入されるとき比較的大きく曲げられる点や、巻き癖などが関係していると考えられる。
製管装置3が進むことで、抵抗力付与部30の摺擦部材34,35が先行螺旋管部91に沿って摺擦され、抵抗力付与部30と先行螺旋管部91との間に滑り摩擦が生じる。これによって、抵抗力付与部30から先行螺旋管部91に巻回方向の進み側へ向けて抵抗力F30が付与される。抵抗力F30の向きは、巻回方向に沿って推進反力F10とは逆向きである。かつ、抵抗力F30の付与位置は、推進反力F10の付与位置よりも帯状部材90の巻回方向の上流側(戻り側)である。この結果、図2の二点鎖線にて示すように、先行螺旋管部91に拡径作用が働く。拡径作用のメカニズムとしては、推進反力付与部10と嵌合力付与部20との間の後続帯部92に圧縮応力が発生し、この圧縮応力が先端一周部分91aにおいて解放されることが考えられる。或いは、推進ローラ13の回転量に対して製管装置3の実際の進み量が小さくなる分だけ、後続帯部92が接合工程位置20p側へスライドされることも考えられる。
好ましくは、抵抗力F30の大きさは、製管装置3の進み動作を許容し、かつ先行螺旋管部91を拡径可能(径変化可能)な程度に設定する。
したがって、特許文献1等における環状フレームや特許文献2等における放射状フレーム等の縮径規制フレームが不要である。言い換えると、本体フレーム3aを、既設管1の内壁に沿う環状にする必要が無く、或いは、既設管1の内壁へ向かって放射状に延出させる必要も無い。この結果、製管装置3をコンパクトにできる。
抵抗力F30を大きく設定すると、拡径作用を強くできる。抵抗力F30を小さく設定すると、拡径作用を弱めることができる。これによって、例えば、既設管1の内径が軸方向の位置によって変化している場合、前記変化に応じて、更生管9を拡縮させることができる。既設管1の内壁に突起等の盛り上がり部や凹み部があった場合には、これに倣うように更生管9を拡縮させることができる。
更には、これら係止部25b,35bと補強リブ95との当たりによって、製管装置3を先行螺旋管部91の軸方向(図5及び図6において左右方向)に位置決めできる。
<第2実施形態>
図7は、本発明の第2実施形態を示したものである。第2実施形態では、抵抗力付与部30Bの抵抗力調整手段として、抵抗力調整ボルト36に代えて流体圧シリンダ37が設けられている。流体圧シリンダ37は、油圧シリンダであってもよく、空気圧シリンダであってもよい。流体圧シリンダ37によって、摺擦部材34を先行螺旋管部91に押し当てることで、抵抗力F30を発生させることができる。流体圧シリンダ37の出力を調節することで、抵抗力F30の大きさを段階的に調節したり無段階に調節したりできる。抵抗力F30の大きさを遠隔操作で調節することもできる。
これによって、既設管1の内径の変化や、既設管1内の盛り上がり部や凹み部等に応じて、更生管9を適確に拡縮させることができる。
図8は、本発明の第3実施形態を示したものである。第3実施形態に係る製管装置3Cにおいては、抵抗力付与部30Cが、一対の抵抗ローラ33,33によって構成されている。抵抗ローラ33ひいては抵抗力付与部30Cの配置場所は、第1実施形態(図3)の抵抗力付与部30と同様である。抵抗ローラ33の軸線は、推進ローラ13の軸線と平行に製管装置3Cの幅方向(図8の紙面と直交する方向)へ向けられている。これら抵抗ローラ33,33が、先行螺旋管部91を内周側と外周側から挟み付けている。少なくとも一方の抵抗ローラ33にモータ等の回転駆動機構(図示省略)が接続されている。この回転駆動機構によって抵抗ローラ33が推進ローラ13とは反対方向へ回転駆動される。これによって、先行螺旋管部91の先端一周部分91aに対して、巻回方向の進み側(図3において左方向)への抵抗力F30が付与される。この抵抗力F30と、推進ローラ13による後続帯部92に対する推進反力F10とが相俟って、先行螺旋管部91に拡径作用を付与できる。抵抗ローラ33の回転数等を調節することによって抵抗力F30を増減できる。これによって、拡径作用を強くしたり弱くしたりできる。
なお、抵抗ローラ33を、先行螺旋管部91との接触で従動回転させるとともに、抵抗ローラ33の回転軸等に摩擦抵抗発生部を設けてもよい。この場合、抵抗ローラ33用の前記回転駆動機構を省略してもよい。
詳細な図示は省略するが、外周側(図8において下側)の抵抗ローラ33の端面を先行螺旋管部91の補強リブ95に当てたり、抵抗ローラ33にフランジを設け、このフランジを補強リブ95に当てたりすることで、製管装置3Cを先端一周部分91aの幅方向(図8において紙面直交方向)に位置決めすることにしてもよい。
図9及び図10は、本発明の第4実施形態を示したものである。第4実施形態に係る製管装置3Dにおいては、接合部20Dから嵌合ローラ23(図3)が省略され、これに代えて、嵌合補助ローラ26が設けられている。嵌合補助ローラ26は、先行螺旋管部91の内周側に配置されるとともに、嵌合受け25よりも製管装置3の進行方向の後方(図9において右側)にずれて配置されている。嵌合補助ローラ26の軸線は、推進ローラ13の軸線と平行に製管装置3Dの幅方向(図9において紙面と直交する方向)へ向けられている。嵌合補助ローラ26は、自軸まわりに従動回転可能になっている。嵌合補助ローラ26には、モータ等の回転駆動機構が接続されている必要は無い。
なお、前記嵌合部93,94どうしが嵌合受け25上で確実に嵌合される場合(図10(a)の実線)には、嵌合補助ローラ26を省略してもよい。
<第5実施形態>
図11~図13は、本発明の第5実施形態を示したものである。図11及び図12に示すように、第5実施形態に係る製管装置3Eは、推進反力付与部10Eと、嵌合力付与部20Eと、抵抗力付与部30Eと、後続帯案内ローラ43を備えている。推進反力付与部10Eは、第1実施形態(図3)の抵抗力付与部30と同様の場所に配置されている。詳しくは、推進反力付与部10Eは、接合工程位置20pから製管装置3Eの進行方向の前方(図11において左方)に離れて、先行螺旋管部91における先端一周部分91a上に配置されている。
互いに嵌合された第1嵌合部93と第2嵌合部94とによって、メインロック9aを構成されている。
互いに嵌合された延出縁部98と段差95dとによって、サブロック9bが構成されている。
図11に示すように、推進反力付与部10Eの推進ローラ13E,13Eを回転駆動することで、先行螺旋管部91を接合工程位置20pへ向けて巻回方向の戻し側(図11において右側)へ押す。この推進反力F10によって、製管装置3Eが、固定の先行螺旋管部91に対して、巻回方向の進行方向(図11において左方向)へ進む。
製管装置3Eによれば、例えば、帯状部材90Eが拡径する傾向があるとき、その拡径を抑制できる。
また、図14に示すように、例えば柱5の外周面に更生管9Eを設ける場合、製管装置3Eを用いることで、帯状部材90Eを柱5の外周面に密着させるようにして螺旋状に巻き付けることができる。
図15は、本発明の第6実施形態を示したものである。第6実施形態の製管装置3Fは、推進反力付与部10Fと、嵌合力付与部20と、抵抗力付与部30Fとを備えている。推進反力付与部10Fは、第5実施形態(図11)の推進反力付与部10Eと同様に、一対の推進ローラ13F,13Fを有し、嵌合力付与部20の接合工程位置20pから製管装置3Fの進行方向の前方(図15において左方)に離れて配置されている。これら推進ローラ13F,13Fの間に先行螺旋管部91が挟み付けられている。推進ローラ13Fが、回転駆動機構(図示省略)によって、先行螺旋管部91を接合工程位置20pへ向けて押すように回転駆動される。この押す力を反力にして、製管装置3Fが、図15において左方へ推進される。
これによって、先行螺旋管部91に縮径作用を付与することができる。
図16及び図17は、本発明の第7実施形態を示したものである。第7実施形態は、抵抗力付与部及び帯状部材の変形例に係る。
図16(a)に示すように、第7実施形態の帯状部材90Gには、補強帯材99が付設されている。補強帯材99は、鋼板などの金属板によって構成され、断面が概略M字状になっている。詳しくは、補強帯材99は、一対の溝99b,99bと、これら溝99b,99b間のU字状断面の中央凸枠部99aを含む。この補強帯材99が、帯状部材90Gの2つの補強リブ95Gどうしの間に嵌められている。
図16(b)に示すように、抵抗力調整ボルト36によって、可動摺擦部材39が固定摺擦部材38へ向けて接近されることによって、摺擦部材38,39が、補強帯材99の中央凸枠部99aの両側部に押し付けられている。これによって、補強帯材99と摺擦部材38,39との間に摩擦が生じ、抵抗力F30が作用する。
抵抗力付与部30Gに抵抗力調整ボルト36に代えて流体圧シリンダ37(図7参照)を設け、流体圧シリンダ37によって可動摺擦部材39の押し付け力ひいては抵抗力F30を調整することにしてもよい。
例えば、推進反力付与部が後続帯部92に配置され、かつ、抵抗力付与部が、推進反力付与部よりも接合工程位置20p側の後続帯部92に配置されていてもよい。
位置決め及び回り止め用の係止手段(第1、第2係止部)を、本体フレーム3aに設けてもよい。
複数の実施形態の要素どうしを組み合わせてもよい。例えば、第4実施形態(図9)の抵抗力付与部30を第3実施形態(図8)の抵抗力付与部30Cに代えてもよい。
第5実施形態(図11)の嵌合力付与部20Eを他の実施形態の嵌合力付与部に適用してもよい。
第5実施形態以外の実施形態の帯状部材として、第5実施形態の帯状部材90E(図13)を適用してもよい。第5実施形態の帯状部材として、第1実施形態等と同様の帯状部材90(図4)を適用してもよい。
第7実施形態(図16)の抵抗力付与部30Gは、第1~第6の各実施形態の抵抗力付与部として適用できる。
第5実施形態(図11)の変形例として、先行螺旋管部91における抵抗力付与部30Eの配置部分を、推進反力付与部10Eの配置部分よりも巻回方向の戻し側(上流側)に配置することで、先行螺旋管部91に拡径作用が付与されるようにしてもよい。
第5実施形態(図11)の変形例として、推進反力付与部10Eと抵抗力付与部30Eとが、接合工程位置20pに対して螺旋管9の周方向における互いに同じ側(好ましくは進行方向の前方)に配置されていてもよい。
帯状部材90の嵌合部93,94に相当する接合部分が、帯本体部90aとは別体に作製されていてもよい。製管前又は製管時に帯本体部90aと前記接合部分とが接合されるようになっていてもよい。前記接合部分は、帯本体部90aの一周違いに隣接する縁どうし間に跨るとともに、これら縁と接合されるようになっていてもよい。
F30 抵抗力
3,3C~3F 製管装置
9,9E 更生管(螺旋管)
10,10E,10F 推進反力付与部
20p 接合工程位置
25b 第1係止部
30,30C~30G 抵抗力付与部
33 抵抗ローラ(摺擦部材)
34 内周側摺擦部材(摺擦部材)
35 外周側摺擦部材(摺擦部材)
35b 摺擦ブロック(第2係止部)
38 固定摺擦部材(摺擦部材)
39 可動摺擦部材(摺擦部材)
90,90E,90G 帯状部材
91 先行螺旋管部
92 後続帯部
Claims (10)
- 帯状部材を螺旋状の巻回方向に沿って巻回しながら前記帯状部材の一周違いに隣接する縁どうしを接合することによって螺旋管を形成する製管装置であって、
前記接合が行われる接合工程位置から離れて配置され、前記帯状部材における先行して製管された先行螺旋管部に続く後続帯部又は前記先行螺旋管部に対して、前記帯状部材の巻回方向に進むための推進反力を付与する推進反力付与部と、
前記推進反力付与部から離れて配置され、前記推進反力による推進時における前記帯状部材との間の摩擦によって、前記巻回方向に沿って前記推進反力とは逆向きの抵抗力を前記帯状部材に付与する抵抗力付与部と、
を備えたことを特徴とする製管装置。 - 前記抵抗力が、前記推進を許容し、かつ前記先行螺旋管部を径変化可能な大きさに設定されていることを特徴とする請求項1に記載の製管装置。
- 前記抵抗力付与部が、前記抵抗力を段階的又は無段階に調節可能であることを特徴とする請求項1又は2に記載の製管装置。
- 前記推進反力付与部が、前記接合工程位置よりも進行方向の前方から前記後続帯部を前記接合工程位置へ向けて押し、前記抵抗力付与部が、前記先行螺旋管部に対して前記巻回方向の進み側へ向けて前記抵抗力を付与することを特徴とする請求項1~3の何れか1項に記載の製管装置。
- 前記推進反力付与部が、前記先行螺旋管部に対して前記巻回方向の戻り側へ向けて前記推進反力を付与し、前記抵抗力付与部が、前記先行螺旋管部における前記推進反力付与部から前記巻回方向に離れた部分に対して前記巻回方向の進み側へ向けて前記抵抗力を付与することを特徴とする請求項1~3の何れか1項に記載の製管装置。
- 前記推進反力付与部と前記抵抗力付与部とが、前記接合工程位置に対して進行方向の互いに同じ側に配置されていることを特徴とする請求項1~5の何れか1項に記載の製管装置。
- 前記抵抗力付与部が、前記帯状部材と摺擦される摺擦部材を含むことを特徴とする請求項1~6の何れか1項に記載の製管装置。
- 前記抵抗力付与部が、前記抵抗力を発生可能に回転される抵抗ローラを含むことを特徴とする請求項1~7の何れか1項に記載の製管装置。
- 前記先行螺旋管部に対して前記巻回方向へ移動可能かつ前記巻回方向と直交する幅方向へ移動不能に係止される係止手段を更に備え、前記係止手段が、前記巻回方向に互いに離れた第1係止部及び第2係止部を含むことを特徴とする請求項1~8の何れか1項に記載の製管装置。
- 帯状部材を螺旋状の巻回方向に沿って巻回しながら前記帯状部材の一周違いに隣接する縁どうしを接合することによって螺旋管を形成する製管方法であって、
前記帯状部材における先行して製管された先行螺旋管部に続く後続帯部と前記先行螺旋管部との前記隣接する縁どうしを接合する接合工程と、
前記接合が行われる接合工程位置から離れた位置において、前記後続帯部又は前記先行螺旋管部に対して、前記帯状部材の巻回方向に進むための推進反力を付与する推進工程と、
前記推進反力を付与する位置から離れた位置において、前記推進反力による推進時における前記帯状部材との間の摩擦によって、前記巻回方向に沿って前記推進反力とは逆向きの抵抗力を前記帯状部材に付与する抵抗工程と、
を備えたことを特徴とする製管方法。
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JP6518324B2 (ja) | 2019-05-22 |
AU2016253716A1 (en) | 2017-12-14 |
EP3290182B1 (en) | 2023-01-25 |
KR101996746B1 (ko) | 2019-07-04 |
AU2016253716C1 (en) | 2021-04-22 |
EP3290182A4 (en) | 2018-12-12 |
AU2016253716B2 (en) | 2019-03-28 |
US10920918B2 (en) | 2021-02-16 |
EP3290182A1 (en) | 2018-03-07 |
JPWO2016175243A1 (ja) | 2018-02-15 |
US20180038541A1 (en) | 2018-02-08 |
KR20170134728A (ko) | 2017-12-06 |
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