JP5748478B2 - Pipeline lining device - Google Patents

Description

  The present invention relates to a pipe lining device, which is mainly used for repairing or reinforcing pipes buried in the ground, such as gas pipes, water pipes, sewer pipes, laying pipes such as power lines and communication lines. The present invention relates to a device for lining for the purpose.

  In Japanese Patent Laid-Open No. 5-96621, as a method of lining a pipe line buried mainly in the ground such as a gas conduit, a water pipe, and a sewer pipe, a flexible cylindrical lining material is applied by fluid pressure to the lining material. A method is described in which the inside is turned over so that the inside becomes the outside and the tube is inserted into the pipe line, and the inner surface of the pipe line is pressed by the fluid pressure.

  In this method, the lining material is passed through the pressure vessel, the tip of the lining material is fixed in an annular shape, and fluid pressure is applied to the outside of the rear portion of the annular fixing portion, whereby the lining material is fixed to the annular fixing portion. Then, the inside is turned upside down, and the inside-out part is advanced in the pipeline.

  By the way, according to this apparatus, since the lining material penetrates the pressure vessel, it is necessary to seal the sealing material with the sealing member at the portion of the introduction port where the lining material enters the pressure vessel. However, it is extremely difficult for the seal member to always be properly pressed and sealed over the entire circumference of the lining material.

  In particular, when used for the lining of pipes as described above, the rear end of the lining material is prevented in order to prevent the lining material from turning over after the rear end of the lining material is drawn into the pressure vessel. In order to apply the belt tension evenly over the entire width of the lining material, the lining material 1 is folded in the width direction as shown in FIG. The belt 2 is connected.

  However, when the lining material 1 is folded in the width direction, the thickness increases as shown in FIG. 2, and even if it is inserted into the pressure vessel 3 in this state and the sealing member 4 is pressed from both the upper and lower sides thereof, as shown in FIG. Large voids 5 are generated on both sides of the folded lining material 1, and the pressure fluid in the pressure vessel 3 is discharged rearward from the cavities 5, and the fluid pressure in the pressure vessel 3 is lowered to decrease the lining material 1. Cannot be performed, and a large exhaust noise is generated by the pressure fluid discharged backward from the space 5.

  Further, as another problem, in order to insert the lining material into the pipe line, the reaction hardening type resin liquid is applied to the inside of the lining material 1, and after turning it over and inserting into the pipe line, The reaction-curing resin liquid is cured to form a rigid tube in the pipe line. Until the reaction-curing resin liquid is completely cured, the pressure vessel 3 and various devices behind it are used. The group had to remain attached to the base.

Japanese Patent Laid-Open No. 5-96621

  The present invention has been made in view of such circumstances, and even if the lining material 1 overlaps and becomes thicker at the connecting portion between the lining material 1 and the belt 2, the pressure fluid in the pressure vessel 3 is discharged rearward and pressure is increased. An object of the present invention is to provide a device in which the fluid pressure in the container 3 does not decrease and does not cause a large exhaust noise.

  Further, as another problem to be solved by the present invention, after the lining material 1 is turned over and inserted into the pipe line, the pressure vessel 3 or a device group behind it can be removed from the base and used for other work. The purpose is to do so.

  Thus, the first invention of the present application is provided with a base for annularly fixing the front end of the lining material at the front end, a pressure vessel is formed at the rear of the base, and the lining material is introduced into the rear of the pressure vessel A seal member made of a pair of sheets made of a flexible and airtight material protruding into the pressure vessel is attached to the introduction port, and the leading end of the sheet is introduced by the fluid pressure in the pressure vessel. In a device that is pressed against both sides of a flat lining material passing through the mouth and inserted into the pipe line while inverting the lining material fixed to the base by the pressure of the pressure fluid fed into the pressure vessel A shut-off device for shutting off the flow of the pressure fluid is provided behind the pressure vessel.

  In the said invention, it is preferable to provide a silencer behind the said interruption | blocking apparatus. The silencer is preferably formed by attaching a flexible plastic foam in a box through which the lining material passes.

  Next, the second invention of the present application is provided with a base for annularly fixing the tip of the lining material at the tip, a pressure fluid inlet is provided in the base, a pressure vessel is formed at the rear of the base, An inlet for introducing the lining material is formed in a rear portion, and a sealing member made of a pair of sheets made of a flexible and airtight material protruding into the pressure vessel is attached to the inlet, and the leading end of the sheet is Pressurize both sides of the flat lining material passing through the inlet by the fluid pressure sent from the pressure fluid inlet of the pressure vessel, and apply pressure to the die by the pressure of the pressure fluid sent into the pressure vessel. In the device for inserting the fixed lining material into the pipe line while reversing, a blocking device for blocking the flow of the pressure fluid is provided between the pressure vessel and the base, and the pressure vessel 3 is provided with respect to the blocking device. Removable It is characterized in that the.

  Further, in these first and second inventions, the shut-off device slides up and down along the wall surface having an opening through which the lining material provided in front of or behind the pressure vessel is inserted. It is preferable that the opening is blocked by the shielding plate.

  In this blocking device, the shield plate may be configured such that a pair of shield plates slide opposite to each other from above and below the opening, and the leading edges thereof are pressed against each other to block the opening. Further, the shielding plate can be slid so as to block the opening from above or below the opening, and the tip edge thereof can be in pressure contact with a receiving portion provided facing the shielding plate. is there. Moreover, it is preferable that the pinching part which consists of a flexible raw material is formed in the front-end | tip of these shielding plates.

  According to the first invention of this application, when the inside of the lining material is turned over and the connecting portion with the belt at the rear end of the lining material approaches, the pressure vessel is blocked by the rear portion of the pressure vessel. The internal pressure fluid is not discharged to the rear, so that the fluid pressure in the pressure vessel does not decrease and no large exhaust noise is generated.

  Further, according to the second invention of the present application, the inside of the lining material is finished, and the lining material is inserted through the entire length of the pipeline, and the pressure vessel and the base are shut off by the shut-off device. Thus, it is possible to remove the pressure vessel and other device groups behind the shut-off device while applying the fluid pressure in the lining material to advance the effect of the reaction curable resin liquid, and to remove these device groups. It can be used for the next lining work.

Top view with belt connected to end of lining material Longitudinal sectional view of the state where the connecting portion between the lining material and the belt in the conventional example passes through the seal member III-III sectional view in FIG. Central longitudinal section of the device of the present invention Central longitudinal sectional view of the pressure vessel in the present invention VI-VI sectional view in FIG. 7 of the pressure vessel in the present invention VII-VII sectional view in FIG. 5 in the present invention VIII-VIII sectional view in FIG. 5 in the present invention IX-IX cross section in FIG. XX sectional view in FIG. XX sectional drawing of the state which closed the shut-off device in FIG. XII-XII sectional view in FIG. XIII-XIII sectional view in FIG. XIII-XIII sectional view of the shut-off device closed in FIG.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows an apparatus for lining a pipe according to the present invention. The tip of a lining material 1 is fixed in an annular shape to a base 6, and a pressure fluid inlet is inserted into a pressure vessel 3 provided at the rear of the base 6. 7, a pressure fluid such as water or compressed air is fed in, and the lining material 1 annularly fixed to the base 6 by the pressure of the pressure fluid is turned over so that the inside is the outside as shown in the drawing, The lined lining material 1 is fed forward from the base 6 and inserted into the pipe 8.

  A rear shut-off device 9 is provided at the rear of the pressure vessel 3, and a silencer 10 is provided at the rear of the rear shut-off device 9. A front blocking device 11 is provided between the base 6 and the pressure vessel 3.

  Thus, as shown in FIGS. 5 to 8, the pressure vessel 3 is formed with an introduction port 13 for introducing the lining material 1 at the rear portion of the outer shell body 12, and at the front portion of the introduction port 13. The base portion of the seal member 4 composed of a pair of sheets 14 and 14 is attached. The pressure fluid inlet 7 is provided on the outer periphery of the outer shell 12.

  Each of the sheets 14 and 14 has a width slightly larger than the folding width of the lining material 1, and is attached to the front portion of the introduction port 13 with the passage of the lining material 1 interposed therebetween, and forward from the introduction port 13. The pair of sheets 14 and 14 are opposed to each other so as to be sandwiched from above and below the lining material 1.

  As shown in FIGS. 7 and 8, support members 15 and 15 are attached to the outer shell 12 above and below the front end portions of the sheets 14 and 14, and a large number of the support members 15 and 15 are attached to the support members 15 and 15. The slide shaft 16 is slidably penetrated up and down.

  The tip of the slide shaft 16 is pivotally supported on the tip of the sheets 14 and 14 via a mounting bracket 17, and is interposed between the support members 15 and 15 and the mounting bracket 17. The opposed springs 18 urge the opposing sheets 14 and 14 toward each other.

  In order to use the apparatus of the present invention, the lining material 1 is passed between the sheets 14 and 14 through the introduction port 13 from the rear of the apparatus, penetrates the pressure vessel 3, and the tip of the lining material 1 is annularly connected to the base 6. Secure to.

  When pressure fluid is fed into the pressure vessel 3 in this state, fluid pressure acts on the rear outer side of the annular fixed portion of the lining material 1, and the inner side of the lining material 1 is folded at the folded portion 1a as shown in FIG. It is turned over so as to be on the outside, and the folded portion 1 a is pushed forward in front of the base 6 and is inserted into the conduit 8.

  Then, the rear lining material 1 is drawn forward and sequentially turned upside down at the folded portion 1a. The folded portion 1a is sequentially turned over while the folded portion 1a proceeds forward, and turned over the entire length of the lining material 1. It is.

  In the above apparatus, since the slide shaft 16 presses the sheets 14 and 14 only in the vertical direction, the side edge of the lining material 1 depends on the positional relationship between the side edge of the lining material 1 and the slide shaft 16. It is unavoidable that a void 19 is formed between the sheet 14 and the opposed surfaces of the sheets 14 and 14.

  In this case, the pressure contact member 20 made of a flexible material is pressed over the front end surfaces of the sheets 14 and 14 on both side edges of the lining material 1, and the pressure fluid in the pressure vessel 3 leaks from the space 19. It is preferable to prevent this.

  A pressure contact device 21 that presses the pressure contact member 20 is shown in FIGS. In this pressure welding device 21, a pair of upper and lower bars 22 are fixed between both side walls of the pressure vessel 3, and a pair of left and right sliding members 23 are slidably attached to the bars 22. A male screw member 25 is screwed into the attached female screw member 24, and the male screw member 25 is rotated by a handle 26 from the outside of the pressure vessel 3.

  A slide rod 28 is slidably supported on a support plate 27 attached between the slide members 23, and the pressure contact member 20 is attached to the tip of the slide rod 28. , 14 is pressed against the tip surface.

  Further, by rotating the handle 26, the side surface of the pressure contact member 20 can be pressed against the side edge of the lining material 1 to completely close the space 19, and pressure fluid leaks backward through the space 19. Can be prevented.

  In the first invention of the present application, a rear blocking device 9 is provided behind the pressure vessel 3. As shown in FIG. 9, the rear blocking device 9 has openings 33 and 34 through which the lining material 1 passes on the front and rear wall surfaces 31 and 32 of the box 30, and the lining material 1 penetrating through the openings 33 and 34. A shielding plate 35 is provided so as to face each other up and down, and a clamping portion 36 made of a flexible material is provided at opposite ends of the shielding plate 35. Reference numeral 37 denotes a packing that seals between the rear wall surface 32 of the rear blocking device 9 and the back surface of the shielding plate 35.

  A female screw member 38 is attached to both the shielding plates 35, and a male screw member 39 is screwed to the female screw member 38, and a motor 40 and a speed reducer provided on one side of the rear blocking device 9. The drive rod 44 is driven by the machine 41 via the bevel gears 42 and 43, the drive bars 47 provided at the upper and lower sides are driven by the bevel gears 45 and 46 provided at both ends of the drive rod 44, and the A bevel gear 48 provided on the drive bar 47 meshes with a bevel gear 49 provided at the end of the male screw member 39, and opens and closes the shielding plate 35 up and down via the female screw member 38. 34 is shielded.

  As described above, the belt 2 for controlling the turnover of the lining material 1 is sewn to the rear end of the lining material 1 after passing through the rear end. The sheet 14, 14 is thickened to be sewn, and the leading ends of the sheets 14, 14 cannot follow the side edges of the thickened lining material 1, and a large space 5 is formed, and pressure is applied through the space 5. A large amount of the pressure fluid in the container 3 leaks backward, so that sufficient pressure cannot be applied to the pressure container 3 or the lining material 1 turned inside out.

  When such a situation occurs, the rear blocking device 9 provided at the rear of the pressure vessel 3 is operated to slide the shielding plate 35 to shield the opening 34 as shown in FIG. By pinching 2, leakage of the pressure fluid from the pressure vessel 3 to the rear is prevented, and sufficient pressure is applied to the lining material 1 that has already been turned over, so that the lining material 1 can be turned over.

  Further, when the lining material 1 is turned over and the folded portion of the lining material 1 passes through the front end of the seal member 4, the sheets 14 and 14 thereafter only press the belt 2 connected to the lining material 1. Yes, the void 5 disappears or is greatly reduced. Therefore, by opening the shielding plate 35 again, the inside out of the lining material 1 can be further advanced while being controlled by the belt 2.

  However, a large amount of pressure fluid is released from the space 5 until the rear blocking device 9 prevents the leakage of the pressure fluid to the rear, and a large emission sound is generated. Therefore, in order to reduce the emitted sound, it is preferable to provide a silencer 10 behind the rear blocking device 9. The silencer 10 is preferably formed by attaching a flexible plastic foam 51 in a box 50 through which the lining material 1 passes.

  In the second invention of the present application, a front blocking device 11 is provided between the pressure vessel 3 and the base 6. As shown in FIG. 13, the front blocking device 11 has openings 55 and 56 through which the lining material 1 passes on front and rear wall surfaces 53 and 54 of the box 52.

  A shielding plate 57 that slides along the rear wall surface 54 of the box 52 is provided on the upper portion of the lining material 1 that penetrates the openings 55 and 56, and a pressing portion 58 made of a flexible material is provided at the lower end portion thereof. A receiving portion 59 is provided in a lower portion facing the pinching portion 58. Reference numeral 60 denotes a packing that seals between the rear wall surface of the box 52 of the front blocking device 11 and the back surface of the shielding plate 57.

  A female screw member 61 is attached to the shielding plate 57, and a male screw member 62 is screwed to the female screw member 61. The drive bar 67 is driven via the bevel gears 65 and 66 by the motor 63 and the speed reducer 64 provided on the upper part of the front shut-off device 11, and the bevel gear 68 provided on the drive bar 67 is Engage with a bevel gear 69 provided at the upper end of the screw member 62, open and close the shielding plate 57 up and down via the female screw member 61, and pinch the belt 2 between the pinching portion 58 and the receiving portion 59. Thus, the flow of the pressure fluid through the front blocking device 11 is blocked.

  The front blocking device 11 is shielded only by the shielding plate 57 provided on the upper portion of the lining material 1. However, like the rear blocking device 9, the front blocking device 11 is lined up and down by the shielding plates provided vertically. The material 1 can also be sandwiched.

  When the apparatus of the present invention is used for the lining of a pipeline, after the lining material 1 is turned over and inserted into the pipeline, the adhesive applied to the inner surface of the lining material 1 is cured and bonded to the pipeline. There is a need to.

  In this case, by blocking between the pressure vessel 3 and the base 6 with the front shut-off device 11, the fluid pressure in the base 6 and the lining material 1 turned upside-down connected to the base 6 is maintained. The pressure vessel 3 and the device behind it can be removed by the clamp 70 with respect to the front blocking device 11.

  If the front blocking device 11 and the pressure vessel 3 are removed, the pressure fluid fed from the pressure fluid feed port 7 does not enter the base 6 and the pressure inside the lined lining material 1 may gradually decrease. Therefore, it is preferable to provide the pressure fluid inlet 72 in the base 6 and to supply the pressure fluid from the pressure fluid inlet 72 to maintain the fluid pressure in the lining material 1.

DESCRIPTION OF SYMBOLS 1 Liner 2 Belt 3 Pressure vessel 4 Seal member 6 Base 8 Pipe 9 Rear shut-off device 10 Silencer 11 Front shut-off device 13 Introduction port 14 Sheet 31, 32, 53, 54 Wall surface 33, 34, 55, 56 Opening 35 , 57 Shield plate 36, 58 Nipping part 59 Receiving part 72 Pressure fluid inlet

Claims (8)

A base (6) for annularly fixing the tip of the lining material (1) is provided at the tip, a pressure vessel (3) is formed at the rear of the cap (6), and the lining is placed at the rear of the pressure vessel (3). An inlet (13) for introducing the material (1) is formed, and a pair of sheets (14, 14) made of a flexible and airtight material projecting into the pressure vessel (3) at the inlet (13). A seal member (4) is attached, and both sides of a flat lining material (1) in a flat state in which the leading ends of the sheets (14, 14) pass through the inlet (13) by fluid pressure in the pressure vessel (3). The apparatus is inserted into the pipe line (8) while reversing the lining material (1) fixed to the base (6) by the pressure of the pressure fluid sent into the pressure vessel (3). In the block, the flow of the pressure fluid is blocked behind the pressure vessel (3) Characterized in that a location (9), the pipe lining device The pipe lining device according to claim 1, characterized in that a silencer (10) is provided behind the blocking device (9). 3. Pipe line according to claim 2, characterized in that the silencer (10) comprises a flexible plastic foam (51) glued in a box (50) through which the lining material (1) passes. Lining equipment A base (6) for fixing the tip of the lining material (1) in an annular shape is provided at the tip, a pressure fluid inlet (72) is provided in the base (6), and a pressure vessel (3 is provided at the rear of the base (6). ), An inlet (13) for introducing the lining material (1) is formed at the rear of the pressure vessel (3), and the inlet (13) projects into the pressure vessel (3). A seal member (4) made of a pair of sheets (14, 14) made of an airtight material is attached, and the tip of the sheet (14, 14) is attached to the pressure fluid inlet (7) of the pressure vessel (3). Is brought into pressure contact with both sides of the flat lining material (1) passing through the introduction port (13) by the fluid pressure fed from the pressure port, and the pressure of the pressure fluid fed into the pressure vessel (3) In the pipe line (8) while reversing the lining material (1) fixed to the base (6) An apparatus for passing, during said pressure vessel (3) and the cap (6), a shut-off device (11) provided for blocking the flow of pressure fluid, said pressure vessel (3 with respect to the shutoff device (11) ) Detachable pipe lining device The blocking device (9, 11) has a wall surface (31, 32) having an opening (33, 34, 55, 56) through which the lining material (1) provided in front of or behind the pressure vessel (3) is inserted. , 53, 54) and a shielding plate (35, 57) sliding up and down along the wall surface (31, 32, 53, 54). The opening (33) is formed by the shielding plate (35, 57). , characterized in that is adapted to shield the 34,55,56), the pipe lining device according to claim 1 or 4 The shield plate (35, 57) is configured such that the pair of shield plates (35, 57) slide oppositely from above and below the opening (33, 34, 55, 56), and the leading edges thereof are pressed against each other. 6. Liner lining device according to claim 5, characterized in that said openings (33, 34, 55, 56) are shielded. The shielding plate (35, 57) slides so as to shield the opening (33, 34, 55, 56) from above or below the opening (33, 34, 55, 56), and its leading edge is The pipe lining device according to claim 5, wherein the pipe lining device is in pressure contact with a receiving portion (59) provided to face the shielding plate (35, 57). The inner lining of a pipe line according to claim 5, 6 or 7, wherein a pinching part (36, 58) made of a flexible material is formed at the tip of the shielding plate (35, 57). apparatus

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