Piping lining apparatus and piping lining method

Abstract

To provide a piping lining apparatus and a piping lining method that enable simple rectification of existing pipes and can improve construction efficiency.SOLUTION: A piping lining apparatus 100 capable of covering an inner wall of an existing pipe P with a lining material L comprises a mobile vehicle 7 capable of freely moving within the existing pipe, a lining material housing part 10 capable of mounting the belt-like lining material on the mobile vehicle, and a welding part 11 capable of drawing out the lining material from the lining material housing part and welding the same to the inner wall of the existing pipe.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pipe lining device and a pipe lining method for repairing an existing pipe by welding a strip-shaped lining material to the inner wall of the pipe. [Background technology]

[0002] Pipes for water, gas, etc. are buried underground under roads, etc. As a countermeasure for when such existing pipes crack, corrode, or deteriorate, a widely used repair method is to apply a lining material to the inner wall of the pipe while it is buried underground without excavating the existing pipe.

[0003] Patent Document 1 describes a configuration in which a tubular lining material made of thermoplastic resin is inserted into an existing pipe, and a heating device is drawn into the inside of the lining material, and the lining material is heated by the heating device to form a fiber-reinforced resin layer. [Prior art documents] [Patent documents]

[0004] Patent Document 1: JP 2011-121282 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, the device described in Patent Document 1 has a problem that the area occupied by the device at the construction site is large, and for example, installation may be difficult at a construction site where the piping system is complicated. In addition, there is a tendency for the cost of transportation and delivery to the site to increase, and there is a problem that the distance required to insert the lining material into the existing pipe becomes long, making insertion difficult due to resistance such as friction with the existing pipe.

[0006] An object of the present invention is to provide a pipe lining device and a pipe lining method which solve the above problems, enable existing pipes to be rehabilitated easily, and have good construction efficiency. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a pipe lining device capable of covering the inner wall of an existing pipe with a lining material, A mobile vehicle capable of freely moving within the existing pipe; A lining material storage section capable of loading the strip-shaped lining material onto the vehicle; The present invention provides a pipe lining device comprising: a welding portion capable of pulling out the lining material from the lining material storage portion and welding it to the inner wall of the existing pipe.

[0008] This configuration allows existing pipes to be easily repaired, improving construction efficiency. In addition, since the device can be freely moved to a required location, partial repairs are also possible.

[0009] In the pipe lining device, the welding portion may be configured to be capable of welding the lining material by ultrasonic vibration.

[0010] This configuration makes it possible to continuously weld the lining material efficiently using a simple configuration.

[0011] In the pipe lining device, the mobile vehicle may have wheels, and the wheels may be configured to be pressed against an inner wall of the existing pipe.

[0012] This configuration allows it to be quickly moved to the required position within the piping.

[0013] In order to solve the above problems, the present invention provides a pipe lining method for covering an inner wall of an existing pipe with a lining material, comprising the steps of: The present invention provides a pipe lining method, characterized in that a mobile vehicle moves in one direction inside the existing pipe while welding the strip-shaped lining material in a spiral shape to the inner wall of the existing pipe.

[0014] This configuration makes it possible to easily rehabilitate existing pipes, thereby improving construction efficiency. Effect of the Invention

[0015] The pipe lining device and the pipe lining method of the present invention make it possible to easily rehabilitate existing pipes, thereby improving construction efficiency. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a diagram illustrating a pipe lining device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA′ of the pipe lining device according to the first embodiment of the present invention. [Diagram 3] FIG. 5 is a BB′ cross-sectional view of the pipe lining device in the first embodiment of the present invention. [Figure 4] FIG. 2 is a CC' cross-sectional view of the pipe lining device in the first embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS EXAMPLES

[0017] A first embodiment of the present invention will be described with reference to Figs. 1 to 4. Fig. 1 is a diagram illustrating a pipe lining device arranged inside an existing pipe in the first embodiment of the present invention. Fig. 2 is an AA' cross-sectional view of the pipe lining device in the first embodiment of the present invention. Fig. 3 is a BB' cross-sectional view of the pipe lining device in the first embodiment of the present invention. Fig. 4 is a CC' cross-sectional view of the pipe lining device in the first embodiment of the present invention.

[0018] (Pipe lining equipment) The pipe lining device 100 in the first embodiment of the present invention is a device that applies a lining material to the inner wall of an existing pipe P while the pipe is buried underground, without excavating the existing pipe P. That is, the pipe lining device 100 is inserted into the existing pipe P from a carry-in entrance, moves to a repair location, and welds the loaded strip-shaped lining material to the inner wall of the existing pipe P.

[0019] The pipe lining device 100 has driving units 1 (1a, 1b) for self-movement, wheels 2 (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h), and a mobile vehicle 7 equipped with a wheel pressing unit 9. Driving unit 1a is provided near one end of the pipe lining device 100, and driving unit 1b is provided near the other end of the mobile vehicle 7. One set of four wheels 2a, 2b, 2c, 2d are driven by driving unit 1a, and the other set of four wheels 2e, 2f, 2g, 2h are driven by driving unit 1b. In addition, the wheels 2 (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) are pressed against the inner wall of the existing pipe P by wheel pressing sections 9 consisting of hydraulic cylinders provided on each of the wheels 2 (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h), and the wheels 2 (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) are driven to rotate, thereby allowing the mobile vehicle 7 to move freely in one direction or the other within the existing pipe P.

[0020] The driving of the driving unit 1 (1a, 1b) is controlled by a controller (not shown) that drives, stops, and adjusts the moving speed. The controller is electrically connected to the driving unit 1 (1a, 1b) by wire or wirelessly.

[0021] The mobile vehicle 7 of the pipe lining device 100 has a lining material storage section 10 in which the lining material L made of a resin material is loaded in a wound state. Then, while unwinding and pulling out the lining material L, it can be ultrasonically welded to the inner wall of the existing pipe P as described later.

[0022] In order to weld the lining material L to the inner wall of the existing pipe P, the mobile vehicle 7 is equipped with a welding unit 11 consisting of an ultrasonic oscillator 3 (3a, 3b, 3c, 3d), a rotary horn 4 (4a, 4b, 4c, 4d), and a rotary horn pressing unit 8 (8a, 8b, 8c, 8d). The ultrasonic oscillator 3 (3a, 3b, 3c, 3d) can generate ultrasonic vibrations and rotate the rotary horn 4 (4a, 4b, 4c, 4d). The rotary horn 4 (4a, 4b, 4c, 4d) transmits the ultrasonic vibrations generated by the ultrasonic oscillator 3 (3a, 3b, 3c, 3d) to the lining material L and the inner wall of the existing pipe P.

[0023] The rotary horn pressing parts 8 (8a, 8b, 8c, 8d) press the rotary horn 4 (4a, 4b, 4c, 4d) against the inner wall of the existing pipe P using a hydraulic cylinder, thereby welding the lining material L to the inner wall of the existing pipe P. The rotary horn 4 (4a, 4b, 4c, 4d) rotates along the inner circumference of the inner wall of the existing pipe P, and is able to continuously weld the short-side end of the lining material L, which is unwound by the transmitted ultrasonic vibrations, to the inner wall of the existing pipe P.

[0024] At this time, by moving the mobile vehicle 7 in one direction or the other, the rotary horn 4 (4a, 4b, 4c, 4d) pressed against the inner wall of the existing pipe P can overlap the short-side ends of the lining material L with adjacent lining materials L after welding and weld them in a spiral shape to the inner wall of the existing pipe P. At this time, the moving speed of the mobile vehicle 7 is such that, when the rotary horn 4 (4a, 4b, 4c, 4d) moves at a constant predetermined speed over a constant distance during one rotation around the inner circumference of the existing pipe P, the lining material L can be welded in a spiral shape at a constant pitch.

[0025] In addition, since rotary horns 4a, 4c are positioned near one of the short end portions of the lining material L that has been rolled out and pulled out, and rotary horns 4b, 4d are positioned near the other short end portion of the lining material L that has been rolled out, both short end portions of the lining material L can be welded to the inner wall of the existing pipe P without interruption.

[0026] In the first embodiment, the lining material L is welded in a spiral shape to the inner wall of the existing pipe P by the rotary horn 4 (4a, 4b, 4c, 4d) while the mobile vehicle 7 is moving at a constant predetermined speed, but this is not necessarily limited to this and can be modified as appropriate. For example, the lining material L may be welded to a predetermined inner wall of the existing pipe P while the mobile vehicle 7 is stopped and not moving.

[0027] In addition, in the first embodiment, the lining material L is welded to the inner wall of the existing pipe P by four rotary horns, but this is not necessarily limited to this and can be modified as appropriate. For example, the lining material L may be welded to the inner wall of the existing pipe P by two or three rotary horns, or the lining material L may be welded to the inner wall of the existing pipe P by five or more rotary horns.

[0028] The mobile vehicle 7 is provided with a cutting blade 5 and is capable of cutting the lining material L. This makes it possible to cut the lining material L when the lining of the repair portion of the inner wall of the existing pipe P is completed.

[0029] In the first embodiment, the lining material L is configured to be mounted on the mobile vehicle 7 in a rolled up state, but this is not necessarily limited to this and can be modified as appropriate. For example, the lining material L may be configured to be mounted on the mobile vehicle 7 in a folded state. In either case, the lining material L may be pulled out and welded to the inner wall of the existing pipe P.

[0030] In addition, in the first embodiment, the lining material L is made of a resin material, but this is not necessarily limited to this and can be changed as appropriate. For example, the lining material L may be made of a rubber material or a glass material, and may be selected according to the characteristics of the existing pipe P.

[0031] (Pipe lining method) First, the pipe lining device 100 is inserted into the existing pipe P from the entrance using a crane or the like. Then, by operating a controller (not shown), the hydraulic cylinders of the wheel pressing units 9 are extended to press the wheels 2 (2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h) against the inner wall of the existing pipe P, and the driving units 1 (1a, 1b) are driven. Then, the mobile vehicle 7 is moved to the repair start position, and the hydraulic cylinders of the rotary horn pressing units 8 (8a, 8b, 8c, 8d) are extended to press the rotary horns 4 (4a, 4b, 4c, 4d) against the inner wall of the existing pipe P. Next, the ultrasonic oscillator 3 (3a, 3b, 3c, 3d) is caused to oscillate to transmit ultrasonic vibrations to the rotary horn 4 (4a, 4b, 4c, 4d), and while the mobile vehicle 7 is moved in one direction or the other at a predetermined speed, the lining material L is pulled out and both ends of its short side are spirally welded to the inner wall of the existing pipe P using ultrasonic waves.

[0032] At this time, rotary horns 4a, 4c are positioned near one of the short end portions of the lining material L that has been rolled out, and rotary horns 4b, 4d are positioned near the other short end portion of the lining material L that has been rolled out, so that both short end portions of the lining material L can be welded to the inner wall of the existing pipe P.

[0033] When the repair of the repair area is completed, the lining material L is cut with the cutting blade 5. Then, the movement of the mobile vehicle 7 is stopped, the oscillation of the ultrasonic oscillator 3 (3a, 3b, 3c, 3d) is stopped, and the hydraulic cylinder of the rotary horn pressing unit 8 (8a, 8b, 8c, 8d) is contracted to pull the rotary horn 4 (4a, 4b, 4c, 4d) away from the inner wall of the existing pipe P.

[0034] Then, the mobile vehicle 7 is moved and carried out from the carry-out opening using a crane or the like, thereby completing the rehabilitation of the inner wall of the existing pipe P.

[0035] In the first embodiment, the lining material L is welded in a spiral shape to the inner wall of the existing pipe P while the mobile vehicle 7 is moving, but this is not necessarily limited to this and can be modified as appropriate. For example, the lining material L may be welded to a predetermined inner wall of the existing pipe P while the mobile vehicle 7 is stopped without moving.

[0036] Thus, in the first embodiment, a pipe lining device capable of covering the inner wall of an existing pipe with a lining material is provided, A mobile vehicle capable of freely moving within the existing pipe; A lining material storage section capable of loading the strip-shaped lining material onto the vehicle; a welding portion capable of pulling out the lining material from the lining material storage portion and welding the lining material to an inner wall of the existing pipe; The pipe lining device, which is characterized by comprising the above, makes it possible to easily rehabilitate existing pipes, thereby improving construction efficiency.

[0037] Also, there is provided a pipe lining method for covering an inner wall of an existing pipe with a lining material, comprising the steps of: This pipe lining method, which is characterized by having a mobile vehicle move in one direction within the existing pipe while spirally welding the strip-shaped lining material to the inner wall of the existing pipe, makes it possible to easily rehabilitate the existing pipe and improves construction efficiency. [Industrial Applicability]

[0038] The pipe lining device and the pipe lining method of the present invention can be widely used in the field of rehabilitation of existing pipes. [Explanation of symbols]

[0039] 1 (1a, 1b): Drive unit 2(2a, 2b, 2c, 2d, 2e, 2f, 2g, 2h): Wheels 3(3a, 3b, 3c, 3d): Ultrasonic oscillator 4(4a, 4b, 4c, 4d): Rotary horn 5: Cutting blade 6: Cover 7: Mobile vehicle 8 (8a, 8b, 8c, 8d): Rotary horn pressing part 9: Wheel pressure section 10: Lining material storage section 11: Welded part 100: Pipe lining device L: Lining material P: Existing pipe

Claims

1. A pipe lining device capable of covering the inner wall of an existing pipe with a lining material, A mobile vehicle capable of freely moving within the existing pipe; A lining material storage section capable of loading the strip-shaped lining material onto the vehicle; a welding portion capable of pulling out the lining material from the lining material storage portion and welding it to an inner wall of the existing pipe.

2. 2. The pipe lining device according to claim 1, wherein the welding portion is capable of welding the lining material by ultrasonic vibration.

3. 3. The pipe lining device according to claim 1, wherein the mobile vehicle has wheels, and the wheels are pressed against an inner wall of the existing pipe.

4. A pipe lining method for covering an inner wall of an existing pipe with a lining material, comprising the steps of: A pipe lining method, comprising: welding the strip-shaped lining material to an inner wall of the existing pipe while a mobile vehicle moves in one direction inside the existing pipe.

Images