WO2015166948A1 - 製管装置およびこれを用いた製管方法 - Google Patents
製管装置およびこれを用いた製管方法 Download PDFInfo
- Publication number
- WO2015166948A1 WO2015166948A1 PCT/JP2015/062833 JP2015062833W WO2015166948A1 WO 2015166948 A1 WO2015166948 A1 WO 2015166948A1 JP 2015062833 W JP2015062833 W JP 2015062833W WO 2015166948 A1 WO2015166948 A1 WO 2015166948A1
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- WIPO (PCT)
- Prior art keywords
- pipe
- pipe making
- spring mechanism
- main body
- making apparatus
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1655—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section a pipe being formed inside the old pipe by winding strip-material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/18—Appliances for use in repairing pipes
Definitions
- the present invention relates to a pipe making apparatus for forming a rehabilitated pipe and a pipe making method using the same.
- a method of lining the inner surface of existing pipes with regenerated pipes made of synthetic resin has been put into practical use.
- a long strip-shaped lining material (band-shaped member) is spirally wound along the inner surface of an existing pipe, and adjacent side edges are overlapped and joined to regenerate along the longitudinal direction of the existing pipe.
- a belt-like member is wound around an outer periphery and spirally wound to form the belt-like member in a tubular shape.
- This pipe making apparatus has a refractive link for expanding or reducing the diameter of a molding frame, a drive unit for feeding a belt-shaped member, and a joining unit disposed at a fitting portion of the wound belt-shaped member. .
- the conventional pipe making apparatus can change the outer diameter uniformly, in order to change it, the work is interrupted each time, and the worker performs the work for the change in the existing pipe. Must-have. For this reason, the efficiency of the pipe making operation is lowered, and there is a possibility that the construction period is delayed.
- An object of the present invention is to configure the pipe making apparatus to be able to deform following the change in the shape of the inner surface of the existing pipe, and to change the front end portion of the pipe to be formed without requiring individual work of changing the expansion / contraction diameter.
- the purpose is to increase the efficiency of the pipe making operation without expanding or reducing the diameter and interrupting the pipe making operation.
- the present invention is directed to a pipe making apparatus that forms a rehabilitated pipe by winding a long band-like member in a spiral shape.
- the main body in the pipe making apparatus is supported by the plurality of orbiting members, at least one spring mechanism portion that extends and contracts between the surrounding members, and the surrounding members.
- a joining mechanism portion that joins the fitting portion of the belt-like member that follows the fitting portion of the preceding belt-like member by pressing from the inner peripheral side of the spiral.
- the spring mechanism portion includes at least one spring member, and can be expanded and contracted so that the interval between the rotating members is different between one side and the other side in the axial direction of the apparatus main body.
- the pipe making apparatus is configured to make a pipe while deforming the body so that the circumference is different between one end side and the other end side in the axial direction when the spring mechanism portion expands and contracts by receiving an external force. .
- the spring mechanism portion includes at least one spring member, and can be expanded and contracted so that the interval between the circumferential members is separated or close in the circumferential direction of the main body.
- the main body is provided with a member that stretches or compresses a spring member of the spring mechanism portion to restrict a range of expansion and contraction of the spring mechanism portion.
- the main body has an outer shape. It may be configured to make the pipe while changing.
- the outer diameter of the pipe to be formed can be enlarged or reduced by the pipe making apparatus so as to follow the change in the internal shape of the existing pipe.
- the necessity for stopping the pipe making apparatus and adjusting each part is reduced, and the pipe can be produced efficiently and in a short period of time.
- a method for producing a rehabilitated pipe using the pipe making apparatus is also within the scope of the technical idea of the present invention. That is, as a pipe manufacturing method, the pipe manufacturing apparatus that expands or contracts the diameter by the spring mechanism section is arranged in an existing pipe, and a long strip member is sent from the inner peripheral side of the pipe manufacturing apparatus to the joining mechanism section. Then, the fed belt-like member is sent to the outer periphery of the pipe making apparatus and is spirally wound while being pushed outward in the radial direction to form a tubular shape. Following the internal shape of the existing pipe, the shape of the pipe making apparatus is changed to form the pipe while expanding or reducing the diameter.
- the tube is formed while the front end portion of the tube is expanded or contracted following the change in the internal shape of the existing tube, so that the formed tube is not easily caught even if the unevenness or step of the inner surface of the existing tube is large. Therefore, the pipe making operation can be smoothly proceeded. There is no need to interrupt the pipe making operation each time in order to change the shape of the pipe making apparatus, and the work efficiency is improved.
- the main body in the pipe making apparatus is configured to be deformed by receiving an external force, the shape of the main body can be deformed following the internal shape of the existing pipe, and the diameter of the pipe formed of the band-shaped member can be increased. It can be formed while reducing the diameter, and the working efficiency is remarkably improved.
- FIG. 1 is a front view showing a pipe manufacturing apparatus according to the first embodiment.
- 2 (a) and 2 (b) are enlarged views of the link body of the pipe making apparatus,
- FIG. 2 (a) is a front view
- FIG. 2 (b) is a plan view showing a partial cross section. is there.
- FIG. 3 is a side view showing a partially broken drive unit in the pipe making apparatus.
- FIG. 4 is a plan view showing the drive unit and the fitting roller as seen from the inner peripheral side of the apparatus main body.
- 5 (a) and 5 (b) show a spring mechanism portion in the pipe making apparatus
- FIG. 5 (a) is a front view
- FIG. 5 (b) is a plan view seen from the inner peripheral side of the apparatus main body.
- FIG. 6 is a plan view showing a state in which the spring mechanism is displaced obliquely.
- FIG. 7 is a schematic diagram illustrating an example of a belt-shaped member.
- FIG. 8 is an explanatory view showing a method for producing a rehabilitated pipe.
- FIG. 9 is an explanatory view showing the deformation of the spring mechanism in the pipe manufacturing apparatus.
- FIG. 10A and FIG. 10B are explanatory views showing a state of deformation of the pipe making apparatus by a cross section in the height direction of the existing pipe.
- FIG. 11 is an explanatory view showing a state of deformation of the pipe making apparatus by a cross section in the width direction of the existing pipe.
- FIG. 12 is a plan view showing a spring mechanism portion of the pipe producing apparatus according to the second embodiment.
- FIG. 13 is a plan view showing a spring mechanism portion of the pipe producing apparatus according to the third embodiment.
- FIG. 14 is a plan view showing the spring mechanism portion of the pipe manufacturing apparatus according to the third embodiment, viewed from the outer peripheral side of the apparatus main body.
- FIG. 15 is a side view showing another example of the limiting member or the compression member in the pipe making apparatus.
- FIG. 16 is a side view showing still another example of the limiting member or the compression member in the pipe making apparatus.
- FIG. 17 is an explanatory view showing a modified example of the pipe making apparatus using spring mechanisms having different expansion and contraction amounts.
- Embodiment 1 In the pipe manufacturing apparatus 1 according to the first embodiment, the belt-like member 100 is continuously drawn into the existing pipe 90 and spirally wound to form the pipe 10 serving as a rehabilitation pipe.
- the pipe making apparatus 1 advances in the pipe making direction X (see FIG. 8), which is the axial direction, while rotating in the circumferential direction along the inner surface of the existing pipe 90.
- the pipe making apparatus 1 includes a drive unit 4 (drive mechanism unit) in which a main body 2 draws a plurality of rotating members 20 and a belt-like member 100 and supplies the main body 2 from the inner peripheral side, and a belt-like shape.
- the member 100 is formed in an annular shape with a fitting roller 5 (joining mechanism) for pressing and fitting the side edge portion from the inner peripheral side.
- the rotating member 20 includes a plurality of link bodies 21 including link rollers 3 connected in a row.
- the plurality of link rollers 3 are arranged at intervals in the circumferential direction.
- the both ends of the some link body 21 of the rotation member 20 are connected via the drive unit 4, the fitting roller 5, etc., and are cyclic
- the link body 21 includes a pair of link members 22 and 23, and a connecting shaft 24 that connects these members so as to be rotatable.
- Each link member 22 (23) is assembled in a rectangular shape by connecting opposing side wall portions 221 (231) to each other by a connecting wall portion 222 (232).
- the side wall portion 221 of one link member 22 is sandwiched between the side wall portions 231 of the other link member 23, and in this state, the side wall portions 221, 231 are connected by the connecting shaft 24 penetrating both. Are connected to each other and can rotate with respect to each other.
- a cutout 231 a is formed in the side wall 231 at the end of the link member 23 over a predetermined angle range centering on the connecting shaft 24.
- the rotation restricting piece 223 is provided on the surface of the side wall portion 221 of the link member 22 so as to be accommodated in the notch portion 231a.
- the rotation restricting piece 223 abuts on both ends of the notch portion 231a, whereby the angle range in which the pair of link members 22 and 23 can rotate is restricted.
- the link members 22 and 23 form an angle of about 100 ° or more even when bent.
- the orbiting member 20 has a curved curved shape along the inner surface of the existing pipe 90, and circulates while contacting the belt-like member 100, so that the main body 2 is maintained in an annular shape.
- the connecting shaft 24 also serves as a support shaft for the link roller 3.
- the link roller 3 is supported by the connecting shaft 24 via a bearing so as to be rotatable.
- the link roller 3 is a cylindrical body made of synthetic resin or metal, for example, and rotates in contact with the surface of the belt-like member 100 wound around the outer periphery of the main body 2.
- the connecting wall portion 222 of one link member 22 and the connecting wall portion 232 of the other link member 23 are overlapped between adjacent link bodies 21 and fastened by bolts and nuts (not shown). .
- the drive unit 4 includes a pinch roller 43 in which an outer roller 41 and an inner roller 42 are paired. By rotating these rollers 41 and 42 in opposite directions, the belt-like member 100 is sandwiched from both the front and back surfaces, pulled from the inner peripheral side of the main body 2, and sent toward the subsequent fitting roller 5.
- pinch roller 43 As shown in FIG. 1, two pairs of pinch rollers 43 are arranged in the drive unit 4 along the supply path of the belt-shaped member 100.
- the pinch roller 43 may be a set.
- FIG. 3 shows the drive unit 4 with a part cut away along the path of the belt-like member 100 drawn into the pinch roller 43.
- the pinch rollers 43 (the outer surface roller 41 and the inner surface roller 42) are provided inside the casing 45, and the respective rotation shafts are rotatably supported by the casing 45.
- the inner roller 42 rotates while being in contact with the surface of the belt-like member 100.
- the outer surface roller 41 includes large-diameter portions 411 and 412 and a small-diameter portion 413 so as to rotate while being in contact with the back surface of the belt-like member 100 provided with the ribs 102 and the like.
- the large-diameter portion 411 is formed with a width that can be inserted between adjacent ribs 102 of the belt-like member 100
- the large-diameter portion 412 is formed in a bowl-like shape that can be inserted into the groove of the reinforcing member 110 attached to the belt-like member 100.
- the small diameter portion 413 is formed so as to rotate in contact with the tip of the rib 102.
- the driving force of the hydraulic motor 46 is transmitted to the outer roller 41 and the inner roller 42 via a speed reducer (for example, each gear of the gear mechanism 44), and is driven to rotate in opposite directions.
- the hydraulic motor 46 operates by receiving pressure oil supplied from, for example, a hydraulic unit 93 shown in FIG.
- the subsequent belt-like member 100 is sent out to the outer peripheral side of the main body 2 so as to be parallel to the belt-like member 100 wound around the front end portion of the tube 10 (FIG. 1). reference).
- the belt-like member 100 is wound spirally along the inner surface of the existing pipe 90 to form a pipe 10 that becomes a rehabilitation pipe.
- the surface (one surface) of the belt-like member 100 that becomes the inner surface thereof is formed to be substantially flat.
- the back surface (the other surface) of the belt-shaped member 100 that is the outer peripheral surface of the tube 10 includes a plurality of ribs 102 along the longitudinal direction of the belt-shaped member 100 on the back surface of the substrate 101.
- the rib 102 has a T-shaped cross section. Between the adjacent ribs 102, a metal reinforcing material 110 is continuously attached in the longitudinal direction of the belt-shaped member 100.
- the reinforcing material 110 is formed by bending a strip-shaped steel plate into a substantially W-shaped cross section, and the tips of the inclined portions at both ends in the width direction are respectively engaged with the tip T-shaped portions of the ribs 102.
- the reinforcing material 110 may not be attached.
- a fitting groove 105 extending in the longitudinal direction is provided on one side edge portion (left side in FIG. 7) of the substrate 101 in the width direction so as to open to the surface of the belt-like member 100 (downward in FIG. 7). It has been.
- a stepped portion 104 corresponding to the thickness of the substrate 101 is formed on one side edge in the width direction of the substrate 101.
- a fitting protrusion 103 extending in the longitudinal direction is provided on the rear surface of the other side edge (right side in FIG. 7) of the substrate 101 in the width direction.
- the band-shaped member 100 includes a fitting protrusion 103 and a fitting groove 105 as fitting portions.
- the band-shaped member 100 is wound spirally, and adjacent side edges are joined to each other.
- the belt-like member 100 is fed out from the drum 91 and continuously supplied to the pipe making apparatus 1.
- the band-shaped member 100 is supplied to the pipe making apparatus 1 so that the back surface of the substrate 101 on which the ribs 102 and the like are erected is on the outer peripheral side.
- the belt-like member 100 has side edges adjacent to each other, and the fitting protrusion 103 is fitted into the fitting groove 105 from the inner peripheral side.
- the pipe making apparatus 1 includes a single fitting roller 5 as a joining mechanism.
- FIG. 4 is a view of the drive unit 4 and the fitting roller 5 as seen from the inner peripheral side of the belt-like member 100, and the hydraulic motor 46 and hydraulic piping are omitted from the drive unit 4.
- the fitting roller 5 is provided on the annular main body 2 and is disposed on the inner peripheral side of the tube 10.
- the pipe making apparatus 1 has a structure that does not require this type of roller member on the outer peripheral side of the pipe 10 in addition to the fitting roller 5 as a joining mechanism portion.
- the fitting roller 5 is pivotally supported between a pair of plates 26 constituting a connecting link body, and has a cylindrical main body 51 having substantially the same diameter as that of the link roller 3 and a flange having a larger diameter than that of the link roller 3. A portion 52 and a large diameter portion 53 are provided.
- the fitting roller 5 is in contact with the surface of the belt-like member 100 wound around the front end portion of the tube 10 that has already been formed, and the side edge of the belt-like member 100 sent from the drive unit 4 to the side edge portion thereof.
- the parts are overlapped and joined.
- the flange portion 52 of the fitting roller 5 contacts and guides the side edge portion of the belt-like member 100, and the large-diameter portion 53 strongly presses the side edge portion of the belt-like member 100 from the inner peripheral side to fit.
- the fitting protrusion 103 is fitted in the fitting groove 105.
- an adjusting mechanism 6 is provided for adjusting the spiral path so that the belt-like member 100 is wound at a predetermined pitch.
- the adjustment mechanism 6 is configured to adjust the path of the belt-like member 100 by turning the adjustment screw 61 to adjust the position of the link roller 3.
- An outer surface guide 7 is provided between the drive unit 4 and the fitting roller 5 to guide the belt-like member 100 so as not to swell toward the outer periphery (see FIG. 1).
- the outer surface guide 7 is a guide roller 71 having a small diameter that contacts and guides the surface of the belt-shaped member 100, and a guide disposed on the outer peripheral side than the belt-shaped member 100 guided by the guide roller 71 and sent to the fitting roller 5. Plate 72.
- the main body 2 is provided with spring mechanism portions 8 at a plurality of (for example, three or more) locations at predetermined intervals in the circumferential direction.
- the spring mechanism unit 8 connects the plurality of adjacent link bodies 21 that are the revolving members 20 so as to be expandable and contractible.
- the spring mechanism 8 is disposed between the link bodies 21 constituting the rotating member 20, and the fixing plate 81 on the left side in the figure is the link member 23.
- the connecting wall portion 232 is overlapped and fastened.
- the fixing plate 82 on the right side of the spring mechanism portion 8 in the drawing is fastened to the connecting wall portion 222 of the link member 22.
- the fixed plates 81 and 82 are both made of rectangular steel plate.
- the fixing plates 81 and 82 are provided with an extending plate 83 extending toward the other opposing fixing plates 82 and 81 along one side in the longitudinal direction thereof.
- the fixing plates 81 and 82 have an inverted L shape as a whole when viewed from the front.
- a pair of boss portions 81a and 82a are provided apart from each other near the center in the longitudinal direction of the fixing plates 81 and 82, and an end portion of a coil spring (spring member) 84 is fitted into each of the boss portions 81a and 82a.
- two coil springs 84 are bridged between the set of fixing plates 81 and 82, respectively.
- One end of the coil spring 84 is fitted into the boss 81 a of the fixed plate 81, and the other end is fitted into the boss 82 a of the fixed plate 82.
- the fixing plates 81 and 82 can be relatively displaced, the distance between the adjacent link bodies 21 changes, and a degree of freedom of relative displacement is ensured. ing.
- round holes 81b and 82b penetrating in the thickness direction are formed.
- the end of the round bar member 85 is inserted into the round holes 81b and 82b.
- the outer diameter of the end of the round bar member 85 is smaller than the inner diameter of the round holes 81b and 82b by a predetermined dimension.
- the round bar member 85 inserted through the round holes 81b and 82b can be displaced in the axial direction with respect to the round holes 81b and 82b.
- the round bar member 85 can be displaced obliquely with respect to the fixing plates 81 and 82.
- the two fixing plates 81 and 82 can be displaced so as to be inclined with respect to each other.
- the adjacent link bodies 21 can be displaced so that the mutual interval differs between one side and the other side of the axial direction of the link roller 3 (the axial direction of the main body 2).
- the main body 2 of the pipe making apparatus 1 is provided with a member that expands or compresses the spring member 84 of the spring mechanism portion 8 to regulate and adjust the expansion / contraction range of the spring mechanism portion 8.
- the revolving members 20 connected by the spring mechanism portion 8 are such that the link bodies 21 are interfering with the round holes 81b and 82b of the fixing plates 81 and 82 and the round bar member 85 inserted through them.
- the relative displacement is limited.
- the round holes 81b and 82b of the fixing plates 81 and 82 and the round bar member 85 are engaged with each other so that the relative displacement between the adjacent link bodies 21 is limited within a predetermined range.
- An engaging portion (a limiting member) is configured.
- a bolt is used as the round bar member 85, and a male screw is screwed on the outer periphery of one end portion (the right end portion in the figure).
- One end of the round bar member 85 protrudes outward from the fixed plates 81 and 82 from the round holes 81b and 82b, and a nut 86 is screwed together.
- Reference numeral 87 denotes a lock nut.
- the spring mechanism portion 8 is also provided with a compression mechanism portion (compression member) that compresses the coil spring 84 by the round holes 81b and 82b, the round bar member 85 provided with male threads, and the nut 86. If the coil spring 84 is compressed by this compression mechanism, the outer diameter of the annular main body 2 can be suitably adjusted. For example, by reducing the diameter of the main body 2, attachment or removal to the inner surface of the existing pipe 90 is possible. It becomes easy to do.
- the existing pipe 90 is provided with manholes with a predetermined distance.
- the manhole on the upstream side of the construction extension is designated as the start side manhole M1
- the manhole on the downstream side is designated as the arrival side manhole M2.
- a rehabilitation pipe (tube 10) is manufactured in the existing pipe 90 using the manholes M1 and M2.
- the axial line of the radial direction of the main body 2 orthogonal to the pipe making direction X is represented as Y as illustrated.
- a drum 91 with a turntable on which a belt-like member 100 is wound is installed on the ground of the start side manhole M1, and a generator 92 is installed on the ground of the arrival side manhole M2.
- the pipe making apparatus 1 and the hydraulic unit 93 are carried into the existing pipe 90.
- the pipe making apparatus 1 is such that the main body 2 can be disassembled and assembled, and is carried into the starting side manhole M1 and assembled.
- the belt-like member 100 is drawn from the ground drum 91 to the starting side manhole M1.
- the belt-like member 100 is pulled out from the inner peripheral side of the main body 2 of the pipe making apparatus 1 through the drive unit 4 to the outer peripheral side of the main body 2.
- the coil spring 84 in the spring mechanism portion 8 is compressed by the compression mechanism portion, and the outer diameter of the main body 2 is made relatively small.
- the main body 2 is rotated and the belt-like member 100 is wound around the outer peripheral surface for two to three turns.
- the coil spring 84 of the spring mechanism 8 is loosened, and the main body 2 is expanded in diameter by the spring force. Thereby, the belt-like member 100 wound around the outer periphery of the main body 2 is pressed against the inner surface of the existing pipe 90.
- the pinch roller 43 sandwiches the belt-like member 100 and continuously pulls it out and sends it out, and the drive unit 4 receives the reaction force.
- the drive unit 4 causes the main body 2 to circulate along the front end of the tube 10 in the direction opposite to the direction in which the belt-like member 100 is sent out by the reaction force that sends out the belt-like member 100.
- the side edge portion of the belt-like member 100 delivered from the drive unit 4 is joined from the inner peripheral side to the side edge portion of the portion wound around the front end portion of the tube 10 by the fitting roller 5.
- the tube 10 is joined at the front end, with the side edges of the strip-shaped member 100 wound spirally close to each other.
- the tube 10 extends toward the reaching manhole M2.
- the reaction force acting from the inner surface of the existing pipe 90 via the strip member 100 and the spring force of the coil spring 84 of the spring mechanism portion 8 are balanced.
- the coil spring 84 of the spring mechanism 8 expands and contracts according to the external force, and the main body 2 expands or contracts in diameter.
- the front end portion of the tube 10 in contact with the main body 2 is also expanded or contracted.
- the amount of expansion and contraction differs between one coil spring 84 and the other coil spring 84 in the axial direction of the main body 2.
- the spring mechanism 8 is deformed so that the interval between the two fixing plates 81 and 82 is different between one and the other in the axial direction, and the fixing plates 81 and 82 become oblique to each other. That is, when the spring mechanism 8 is expanded and contracted by receiving an external force, the circumferential lengths L1 and L2 change to be different. Therefore, the main body 2 is deformed so that the circumference thereof is different between the one end side and the other end side in the axial direction.
- the coil spring 84 of the spring mechanism portion 8 expands and contracts due to the reaction force increasing at the step 901, and the main body 2 contracts. Diameter. At this time, slip occurs between adjacent side edges of the belt-like member 100 wound around the front end portion of the tube 10, and the outer diameter of the front end portion of the tube 10 is reduced.
- the plurality of spring mechanism portions 8 that are separated in the circumferential direction change the interval between the rotating members 20 (link bodies 21).
- the main body 2 has a substantially frustoconical shape that is reduced in diameter toward the front as a whole.
- the pipe making apparatus 1 makes a pipe while reducing the outer diameter of the pipe 10 without going through individual operations, and overcomes the step 901.
- the main body 2 when the main body 2 passes through the step 901, the diameter increases in accordance with the decrease in the reaction force from the existing pipe 90, so that the outer diameter of the front end portion of the pipe 10 gradually increases. Go. That is, following the change in the inner surface shape of the existing pipe 90, the spring mechanism portion 8 is deformed, and the interval between the rotating members 20 is changed again. Thereby, the main body 2 has a substantially frustoconical shape whose diameter is reduced rearward as a whole without individually controlling the interval between the revolving members 20. The outer diameter of the main body 2 is increased, and the outer diameter of the tube 10 is automatically increased.
- the reaction force from the existing pipe 90 is increased in the main body 2 by the arrow.
- the front side is smaller than the rear side in the pipe making direction indicated by.
- the main body 2 forms a tube 10 while having a substantially frustoconical shape that squeezes backward in the pipe making direction.
- the pipe 10 is also formed while expanding the diameter, following the diameter expansion of the existing pipe 90.
- the pipe making apparatus 1 follows the expansion of the diameter of the existing pipe 90, the amount of extension of the spring mechanism 8 increases, and the main body 2 pipes while gradually expanding the diameter as a whole.
- the contact area between the link roller 3 pivotally supported by the main body 2 and the front end portion of the pipe 10 that gradually expands in diameter decreases. And the contact state of the link roller 3 and the strip
- the main body 2 is manufactured while forming a substantially truncated cone shape that decreases in diameter toward the front in the pipe manufacturing direction.
- the pipe 10 is formed to have a reduced diameter following the reduced diameter of the existing pipe 90.
- a reaction force f2 in the front-rear direction is applied to the main body 2 by the reaction force indicated by the thick arrow F in FIG.
- the main body 2 is pushed forward by this component force f2. If the contact area between the link roller 3 and the front end portion of the tube 10 is small, the main body 2 may drop out forward. However, as described above, the main body 2 has a substantially truncated cone shape. The contact area with the front end portion of 10 is sufficiently large. Accordingly, the frictional force is also increased, and the main body 2 is prevented from falling off.
- the deformation of the spring mechanism 8 not only expands and contracts in the circumferential direction of the main body 2 by linear deformation, but also changes the outer shape of the main body 2 from a substantially cylindrical shape by deformation having a curvature as shown in FIG. It can also be transformed into a generally frustoconical shape.
- the peripheral length of the main body 2 can be modified so as to differ between one end side and the other end side in the axial direction. In the case of the aging existing pipe 90, it is expected that various changes occur on the inner surface of the existing pipe 90 and the inner diameter is not constant. In such a case, the pipe making apparatus 1 is extremely advantageous.
- the tube 10 is gradually formed and stretched.
- the pipe 10 is formed toward the front-side manhole M2 while changing its outer diameter so as to follow the inner shape of the existing pipe 90.
- the pipe making apparatus 1 can be formed by expanding or reducing the diameter of the main body 2 according to the shape of the inner surface of the existing pipe 90 and appropriately expanding or reducing the diameter of the pipe 10. That is, during the pipe making operation, the front end portion of the pipe 10 is automatically enlarged or reduced in diameter so as to follow the change in the inner surface shape of the existing pipe 90. Therefore, it is not always necessary to monitor the pipe making work, and in order to change the outer diameter of the main body 2, it is not necessary to interrupt the work each time and enter the existing pipe to perform the adjustment work. Since the spring mechanism can freely expand and contract, it is not necessary to route piping for working fluid such as hydraulic piping, and pipes can be manufactured without special control, improving work efficiency and improving the work period. Can prevent the delay.
- the link bodies 21 adjacent to each other with the spring mechanism 8 interposed therebetween are displaced obliquely, and the outer diameter of the annular main body 2 can be different between one side and the other side in the axial direction.
- the outer shape of the main body 2 can be a truncated cone shape that expands or contracts in the pipe making direction, the front end of the tube 10 expands or contracts following the change in the inner surface shape of the existing tube 90.
- Embodiment 2 In FIG. 12, the spring mechanism part 80 of the pipe manufacturing apparatus 1 which concerns on Embodiment 2 is shown.
- the spring mechanism portion 80 one and the other fixing plates 81 and 82 are coupled so as to be rotatable around the radial axis Y of the annular main body 2. Since the other structure of the spring mechanism 80 is the same as that of the first embodiment, the same members are denoted by the same reference numerals, and the description thereof is omitted.
- the spring mechanism portion 80 includes a pair of fixing plates 81 and 82, and two coil springs 84 and a round bar member 85 that connect them. Both ends of the round bar member 85 are inserted into the round holes 81b and 82b of the fixing plates 81 and 82, respectively. A nut 86 is screwed into an end portion of the round bar member 85 formed of a bolt to constitute a compression mechanism portion (compression member) that adjusts the compression amount of the coil spring 84.
- the spring mechanism portion 80 of this embodiment includes a rotation connecting portion including arm portions 81 c and 82 c of a pair of fixing plates 81 and 82 and a pin 88.
- arm portions 81c and 82c are provided on the fixing plates 81 and 82 so as to protrude from the central portion in the longitudinal direction toward the fixing plates 82 and 81 facing each other.
- These arm portions 81c and 82c are rotatably connected by a pin 88.
- the adjacent link bodies 21 have a defined displacement trajectory.
- the link bodies 21 connected by the spring mechanism 80 are smoothly rotated around the radial axis Y of the annular main body 2, and the main body 2 tends to have a truncated cone shape. Therefore, it is possible to cope with a sudden change in the inner diameter of the existing pipe 90.
- Embodiment 3 In FIG. 13, the spring mechanism part 80 of the pipe manufacturing apparatus 1 which concerns on Embodiment 3 is shown.
- the pipe manufacturing apparatus 1 according to this embodiment is also provided with a member that extends or compresses the spring member 84 of the spring mechanism 80 and restricts the expansion / contraction range of the spring mechanism 80.
- the spring mechanism 80 includes an extension member that extends the spring member 84. Since the other structure in the spring mechanism part 80 is the same as that of the said Embodiment 1, the same code
- the spring mechanism portion 80 includes a pair of fixing plates 81 and 82, and two coil springs 84 and a round bar member 85 that connect them.
- a nut 811 is screwed to the round bar member 85 penetrating the one fixing plate 81 as an extension member for securing the extension amount of the spring member 84.
- the nuts 811 as the extension members are respectively screwed into the two round bar members 85 inside the fixed plate 81. That is, the bolt head portion 851 of the round bar member 85 and the nut 811 are disposed on both sides of the fixing plate 81 with the fixing plate 81 interposed therebetween.
- the round bar member 85 is inserted into the round hole 81 b of the fixing plate 81.
- the other fixing plate 82 is provided with tap holes 821 penetrating in the thickness direction in place of the round holes 82b corresponding to the round holes 81b.
- the shaft portion of the round bar member 85 is screwed into the tap hole 821 of the fixing plate 82.
- the fixing plate 82 and the round bar member 85 are coupled in place.
- a nut 811 is screwed to the round bar member 85 inside the fixing plate 81.
- the movable range of the fixed plate 81 with respect to the fixed plate 82 is restricted to a certain range between the bolt head 851 and the nut 811 of the round bar member 85.
- the spring member 84 expands and contracts within a certain range between the bolt head 851 of the round bar member 85 and the nut 811 screwed to the round bar member 85.
- the amount of expansion / contraction of the spring member 84 varies depending on the external force acting on the pipe making apparatus 1. For example, when the peripheral length of the main body 2 is to be held at a certain length or more, it is possible to restrict the expansion / contraction amount of the spring member 84 in the spring mechanism portion 80 to a certain range using such an extension member.
- the spring member 84 can be extended by tightening the nut 811 with respect to the round bar member 85 and reducing the separation distance between the nut 811 and the bolt head 851.
- the spring member 84 is expanded in advance by a predetermined amount or compressed by a predetermined amount, and the size of the spring mechanism portion 80 is adjusted.
- the circumference of the main body 2 can be controlled.
- the round bar member 85 inserted through the round hole 81b of the fixing plate 81 can be displaced obliquely with respect to the round hole 81b, and can cope with a deformation having a curvature of the spring mechanism portion 80.
- the configuration of the spring mechanism 80 may be applied to all the spring mechanisms 8 (80) provided in the main body 2 or may be selectively applied to any of the spring mechanisms 8 (80).
- the spring mechanism part 80 of the pipe manufacturing apparatus 1 which concerns on Embodiment 4 is shown seeing from the outer peripheral side of the main body 2.
- the spring mechanism 80 includes an engagement portion, a compression mechanism portion, and a rotation connecting portion.
- the rotation connecting portion connects the one and the other fixing plates 81 and 82 so as to be rotatable around the radial axis Y1 or Y2 of the annular main body 2. Since the other structure of the spring mechanism 80 is the same as that of the first embodiment, the same members are denoted by the same reference numerals and the description thereof is omitted.
- the spring mechanism portion 80 includes a pair of fixing plates 81 and 82, and two coil springs 84 and a round bar member 85 that connect them. Both ends of the round bar member 85 are inserted into round holes 81b and 82b of the fixing plates 81 and 82, respectively. A nut 86 is screwed onto the end of the round bar member 85 formed of a bolt, and an engagement portion that limits the separation distance between the fixing plates 81 and 82 and a compression mechanism portion (compression member) that compresses the coil spring 84. ).
- the fixed plates 81 and 82 are provided with link plate portions 831 and 832 at both ends in the longitudinal direction so as to protrude toward the opposite fixed plates 82 and 81, respectively. These link plate portions 831 and 832 are provided on the extension plate 83.
- One link plate part 831 is provided with a pin hole through which the pin 88 is inserted, and the other link part plate 832 is provided with a long hole 834 in the circumferential direction in which the pin 88 can slide.
- the link plate portions 831 and 832 are overlapped with each other, and are connected to each other so as to be rotatable around the axis Y1 or Y2 by a pin 88 penetrating both.
- a second engaging portion (a restricting member) that can be engaged with each other is provided at the center in the longitudinal direction of the fixing plates 81 and 82.
- the fixing plate 81 holds an engagement pin 892 extending in the radial direction between the extension plate 83 and the support plate 891 facing the extension plate 83.
- the other fixing plate 82 projects an engaging member 893 having a recess 894 that engages with the engaging pin 892 in the direction of the opposing fixing plate 81.
- the pair of fixing plates 81 and 82 can be relatively rotated around either one of the pins 88.
- the adjacent link bodies 21 are within the range of the long hole 834 and the displacement locus is defined within the engagement range of the second engagement portion.
- the link bodies 21 connected by the spring mechanism 80 smoothly rotate around the radial axis Y1 or Y2 of the annular main body 2.
- the main body 2 tends to have a truncated cone shape and can cope with a sudden change in the inner diameter of the existing pipe 90.
- the spring mechanism 80 according to the second embodiment is not limited to including a limiting member having the round holes 81b and 82b of the fixing plates 81 and 82 and the round bar member 85. Only one round bar member 85 may be used as the limiting member.
- the limiting member, the compression member, and the expansion member are not limited to being provided in the spring mechanism portions 8 and 80, and may be provided in any location of the main body 2.
- the following link members 27 may be provided between the adjacent link bodies 21 as the limiting member and the compression member.
- the link member 27 has a pair of refractive link arms 271 and 272 connected to the link body 21. These link arms 271 and 272 are connected in a state of being bent toward the inner peripheral side in the main body 2.
- an actuator hydraulic cylinder 28 that changes its bent shape.
- the actuator 28 By operating the actuator 28 to expand and contract, the refraction angle of the link member 27 can be adjusted, and the actuator 28 can be expanded or contracted in the circumferential direction.
- a handle 55 for adjusting the bent shape is disposed between the link arms 271 and 272 shown in FIG.
- a rotation shaft 291 having a screw formed on the outer surface thereof is extended to the handle 29, and link arms 271 and 272 are connected to the tip of the handle 29 via links.
- the rotation shaft 291 By rotating the handle 29, the rotation shaft 291 can be operated in the axial direction, and the refraction angle of the link member 27 can be adjusted.
- the extension amount of the spring mechanism 8 By adjusting the refraction angle of the link member 27 as described above, the extension amount of the spring mechanism 8 can be limited or contracted, and the main body 2 can be expanded or contracted.
- the number of the coil springs 84 may be only one, or may be three or more. Instead of the coil spring 84, another spring member such as a leaf spring may be used. As shown in FIG. 1, the spring mechanism 8 of the main body 2 is not limited to being provided at three locations, and may be provided at one location, two locations, or four or more locations on the main body 2. Good. The plurality of spring mechanism portions 8 and 80 can be individually expanded and contracted, and each may have different expansion and contraction amounts.
- FIG. 16 is an explanatory view schematically showing the shape of the pipe making apparatus 1 including a plurality of spring mechanism portions 8 (or 80). As shown in FIG.
- the spring mechanism 8 (80) is deformed according to the shape of the existing pipe, and the contracted and deformed spring mechanism 8 (80) and the stretched and deformed spring mechanism 8 (80) are provided. Contains. Accordingly, the main body 2 of the pipe making apparatus 1 is deformed so as to have an elliptical outer shape, and thus it is possible to form the pipe 10 having an elliptical cross section.
- the configuration of the spring mechanism portions 8 and 80 exemplified in the embodiments is not limited to providing the pipe manufacturing apparatus 1 with one type of spring mechanism portion, but with different types of spring mechanism portions. Also good.
- the circumferential member 20 is not limited to a plurality of link bodies 21 arranged in a row, and may be composed of a hard frame material or the like having a curved outer shape.
- the strip member 100 is also merely an example, and various strip members can be used in the pipe manufacturing method of the present invention.
- the present invention is beneficial because it can increase the efficiency of the pipe-making work in which a strip-like member is wound spirally along the inner surface of an existing pipe to form a tubular body that becomes a rehabilitation pipe.
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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
実施形態1に係る製管装置1は、帯状部材100を既設管90内に連続的に引き込んで螺旋状に巻回し、更生管となる管10を形成する。製管装置1は、既設管90の内面に沿って周方向に回転ながら、その軸方向である製管方向X(図8を参照)に前進する。
図5(a)および図5(b)に示すように、ばね機構部8は、周回部材20を構成するリンク体21同士の間に配設され、図中左側の固定板81がリンク部材23の連結壁部232に重ね合わされて締結されている。ばね機構部8の図中右側の固定板82は、リンク部材22の連結壁部222に締結されている。
既設管90には所定の距離をあけてマンホールが設けられており、図8に示す例では、施工延長の上流側のマンホールを発進側マンホールM1、下流側のマンホールを到達側マンホールM2として、これらのマンホールM1,M2を利用して既設管90内に更生管(管10)を製管する。なお、図示のように製管方向Xに直交する本体2の径方向の軸線をYと表す。
図12には、実施形態2に係る製管装置1のばね機構部80を示す。ばね機構部80は、一方および他方の固定板81,82が環状の本体2の径方向の軸線Yの周りに回動可能に連結されている。ばね機構部80のその他の構造は前記実施形態1と同じであるから、同一の部材には同一の符号を付してその説明は省略する。
図13には、実施形態3に係る製管装置1のばね機構部80を示す。この形態に係る製管装置1も、ばね機構部80のばね部材84を伸張または圧縮し、ばね機構部80の伸縮範囲を規制する部材が設けられている。
図14には、実施形態4に係る製管装置1のばね機構部80を、本体2の外周側から見て示す。このばね機構部80は、実施形態2と同様に係合部、圧縮機構部、および回動連結部を備えている。これらのうち、回動連結部は、一方および他方の固定板81,82が、環状の本体2の径方向の軸線Y1またはY2の周りに回動可能となるように連結する。ばね機構部80のその他の構造は前記実施形態1と共通するので、同一の部材には同一の符号を付してその説明は省略する。
上述した各実施形態は、いずれも一例であって、本発明の構成や用途などについて限定するものではない。例えば実施形態2におけるばね機構部80においては、固定板81,82の丸穴81b,82bおよび丸棒部材85を有する制限部材を備えるに限定されない。制限部材としては、丸棒部材85を1本だけであってもよい。また、制限部材、圧縮部材、および伸張部材は、ばね機構部8、80において設けられるに限らず、本体2のいずれの箇所に設けられてもよい。例えば、制限部材および圧縮部材として、隣接するリンク体21の間に、次のようなリンク部材27が設けられてもよい。
2 本体
20 周回部材
3 リンクローラ
4 駆動ユニット(駆動機構部)
5 嵌合ローラ(接合機構部)
8,80 ばね機構部
81,82 固定板
81b,82b 丸穴
81c,82c 腕部(回動連結部)
811 ナット
821 タップ穴
84 コイルばね(ばね部材)
85 丸棒部材
86 ナット
88 ピン(回動連結部)
100 帯状部材
10 管
90 既設管
Claims (10)
- 長尺の帯状部材を螺旋状に巻回して管を形成する製管装置であって、
本体は、
帯状部材を当接させながら周回する複数の周回部材と、
前記複数の周回部材を連結し、周回部材同士の間で伸張および収縮する少なくとも一つのばね機構部と、
前記周回部材に支持され、先行する帯状部材の嵌合部に対して後続する帯状部材の嵌合部を螺旋の内周側から押さえて接合する接合機構部と、
を備えて環状に形成され、
前記ばね機構部は、少なくとも一つのばね部材を備え、前記周回部材同士の間隔を本体の軸方向の一方と他方とで異ならせるように伸縮することが可能であり、
外力を受けて前記ばね機構部が伸縮するとき、前記本体は周長が軸方向の一端側と他端側とで異なるように変形しながら製管することを特徴とする製管装置。 - 長尺の帯状部材を螺旋状に巻回して管を形成する製管装置であって、
本体は、
帯状部材を当接させながら周回する複数の周回部材と、
前記複数の周回部材を連結し、周回部材同士の間で伸張および収縮する少なくとも一つのばね機構部と、
前記周回部材に支持され、先行する帯状部材の嵌合部に対して後続する帯状部材の嵌合部を螺旋の内周側から押さえて接合する接合機構部と、
を備えて環状に形成され、
前記ばね機構部は、少なくとも一つのばね部材を備え、前記周回部材同士の間隔を本体の周方向に離間させまたは近接させるように伸縮することが可能であり、
前記本体には、前記ばね機構部のばね部材を伸張または圧縮し、前記ばね機構部の伸縮範囲を規制する部材が設けられ、
外力を受けて前記ばね機構部が伸縮するとき、前記本体はその外形状を変化させながら製管することを特徴とする製管装置。 - 請求項1または2に記載の製管装置において、
前記ばね機構部は、少なくとも2つのばね部材を、軸方向の一方と他方とに備えている、製管装置。 - 請求項1または2に記載の製管装置において、
前記ばね機構部は、隣り合う周回部材同士を、前記本体の径方向の軸線まわりに回動可能に連結する回動連結部を備えている、製管装置。 - 請求項1または2に記載の製管装置において、
隣り合う周回部材同士の離間距離を所定範囲に制限する制限部材が、前記ばね機構部に設けられている、製管装置。 - 請求項1または2に記載の製管装置において、
前記ばね部材を圧縮する圧縮部材が、前記ばね機構部に設けられている、製管装置。 - 請求項1または2に記載の製管装置において、
前記ばね部材を伸張する伸張部材が、前記ばね機構部に設けられている、製管装置。 - 請求項1または2に記載の製管装置において、
前記ばね機構部は、前記本体の周方向に間隔をあけて3つ以上、備えられている、製管装置。 - 請求項1または2に記載の製管装置において、
前記本体は、帯状部材を該本体の内周側から送り込み、その反力によって該本体を、前記帯状部材の送り込まれる向きとは逆向きに駆動する駆動機構部を備える、製管装置。 - 製管装置を用いて管を形成する製管方法であって、
前記製管装置は、少なくとも、複数の周回部材と、該周回部材を離間させて連結するばね機構部と、帯状部材の接合機構部とを備えた環状の装置であり、
前記ばね機構部によって拡径または縮径する前記製管装置を既設管内に配置し、
長尺の帯状部材を、前記製管装置の内周側から接合機構部へ送り、
送られた帯状部材を製管装置の外周へ送るとともに径方向の外方へ押しながら螺旋状に周回させて管状に形成し、
既設管の内部形状に追従して、製管装置の外径が前記ばね機構部により拡大または縮小し、管を拡径または縮径させながら形成することを特徴とする製管方法。
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EP15786113.9A EP3138684A4 (en) | 2014-04-30 | 2015-04-28 | Tube-making device and tube-making method using same |
JP2016516388A JP6267327B2 (ja) | 2014-04-30 | 2015-04-28 | 製管装置およびこれを用いた製管方法 |
AU2015254182A AU2015254182B2 (en) | 2014-04-30 | 2015-04-28 | Winding machine and winding method using same |
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JP2019188679A (ja) * | 2018-04-24 | 2019-10-31 | 積水化学工業株式会社 | 製管装置 |
CN116572473A (zh) * | 2023-06-01 | 2023-08-11 | 浙江锦富隆包装有限公司 | 异型食品包装杯一次注塑成型设备 |
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EP3138684A4 (en) | 2017-12-20 |
AU2015254182A1 (en) | 2016-10-20 |
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AU2015254182B2 (en) | 2018-03-22 |
JP6267327B2 (ja) | 2018-01-24 |
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