Sewer pipe regeneration device

Abstract

To provide a sewer pipe rehabilitation device that can significantly reduce work time and costs and increase safety. [Solution] A sewer pipe rehabilitation device 1 in which a shield machine 10, which is the main body of the device, moves inside an existing sewer pipe 2 to rehabilitate the inner wall 2a of the sewer pipe 2, and the shield machine 10 is provided with a bulkhead 21, which is a sewage blocking means arranged in front of the direction of movement of the shield machine 10 and blocks the sewage S in front of the shield machine 10, a screw conveyor 27, which is a drainage means that drains the sewage S in front of the bulkhead 21 to the rear of the direction of movement of the shield machine 10, and an erector device 32, which is a rehabilitation means that rehabilitates the inner wall 2a of the existing sewer pipe 2 within a work space 9 behind the direction of movement of the shield machine 10.

Description

[Technical Field]

[0001] The present invention relates to a sewer pipe rehabilitation device for rehabilitating sewer pipes. Place Regarding. [Background technology]

[0002] Conventional sewer pipe inner wall rehabilitation technologies include an isolation device, as described in Patent Document 1. This isolation device forms an isolation zone within an existing pipe to ensure safety during repair work on sewer pipes with high water volumes. It is intended for use with sewer pipes with a diameter of 900 mm or larger. During rehabilitation work, the outer sealing means blocks sewage on the outer periphery of the water-stop plug, and the inner sealing means suctions air to allow sewage to flow inside the water-stop plug, creating a sewage isolation zone in the cylindrical space between the outer periphery of the isolation cylinder and the inner surface of the existing pipe. Components of an assembled lining unit are inserted through a manhole and assembled into a cylindrical shape in the sewage isolation zone. Multiple assembled lining units are then joined, and mortar is filled between the lining material and the sewer pipe to repair the sewer pipe.

[0003] Furthermore, the method for rehabilitating shield tunneling constructed pipes and the rehabilitation shield device described in Patent Document 2 are a rehabilitation method in which old shield tunneling constructed pipes such as sewer pipes are replaced with larger shield tunneling constructed pipes using a rehabilitation shield device without excavation, thereby enabling manpower savings. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2001-82674 [Patent Document 2] Japanese Patent Application Laid-Open No. 2001-59584 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 1 blocks sewage on the outer periphery of the water-stop plug using an outer sealing means, and then sucks air from the inner sealing means to allow sewage to flow inside the water-stop plug, thereby creating a sewage isolation area in the cylindrical space between the outer periphery of the isolation cylinder and the inner surface of the existing pipe, through which sewage cannot pass, which has the problem of requiring a lot of time and effort for rehabilitation work.

[0006] Furthermore, the technology described in Patent Document 1 requires that the sewage be temporarily blocked by an external sealing means, and that the rehabilitation work be stopped during rainfall or periodically to allow the sewage to flow, making it impossible to ensure a continuous rehabilitation work environment and raising safety concerns, such as the generation of gas.

[0007] Furthermore, the technology described in Patent Document 2 is not a rehabilitation method that reuses existing sewer pipes, but rather a technology that involves crushing and removing old sewer pipes and then laying larger sewer pipes, which poses the problem of longer construction periods and correspondingly higher work costs.

[0008] The present invention has been made in consideration of the above circumstances, and provides a sewer pipe rehabilitation device that significantly reduces the work time and cost required to rehabilitate the inner wall of a sewer pipe and improves safety. Place The purpose is to provide. [Means for solving the problem]

[0009] In order to solve the above problem, the invention described in claim 1 of the present invention is a device in which a device body moves inside an existing sewer pipe and applies pressure to the inner wall of the sewer pipe. Reinforce the sewer pipe A sewer pipe rehabilitation device for rehabilitation, front Distributed in A bulkhead installed to completely block the inside of the existing sewer pipe. and, a seal provided around the bulkhead, abutting against the inner wall of the existing sewer pipe, and working together with the bulkhead to block the infiltration of sewage into the device body on the front side of the device body; The aforementioned bulkhead a drainage means for draining the sewage in front of the device body to the rear in the direction of movement of the device body, and a rehabilitation means for rehabilitation of the inner wall of the existing sewer pipe in a working space in the rear in the direction of movement of the device body; The device is provided with a cutter member rotatably disposed on the front side of the bulkhead via a drive shaft, with its outer periphery located near the inner wall surface of the existing sewer pipe, and a jetting means disposed on the outer periphery of the cutter member for jetting high-pressure washing water toward the inner wall of the existing sewer pipe, wherein when the cutter member rotates via the drive shaft, the cutter member is rotated against deposits inside the existing sewer pipe on the front side of the bulkhead, and the jetting means jets the high-pressure washing water toward the inner wall of the existing sewer pipe to clean the inner wall. It is characterized by:

[0012] Furthermore, the claims of the present invention 2 The invention described in claim 1 In addition to the configuration described above, the drainage means is characterized in that a tip is provided at the intake port of the bulkhead and the drainage means is a screw conveyor that takes in the sewage in front of the bulkhead from the tip and drains it to the rear of the device main body.

[0013] Furthermore, the claims of the present invention 3 The invention described in the above is characterized in that, in addition to the configuration described in claim 1, the rehabilitation means has an assembly device that installs a number of inner surface coating panels on the inner wall of the existing sewer pipe, and is configured so that a filler material is injected between these inner surface coating panels and the existing sewer pipe.

[0014] Furthermore, the claims of the present invention 4 The invention described in claim 1 is characterized in that, in addition to the configuration described in claim 1, the rehabilitation means is a device that sprays or applies a coating material to the inner wall surface of the existing sewer pipe.

[0015] Furthermore, the claims of the present invention 5 The invention described in claim 1 In addition to the configuration described above, Stickers and The working space is formed on the rear side of the moving direction of the device body together with the bulkhead, and the drainage means bulkhead The sewage in front of the device is discharged to the rear side in the direction of movement of the device body, and the rehabilitation means is configured to rehabilitate the inner wall of the existing sewer pipe. [Effects of the Invention]

[0017] According to the invention described in claim 1 of the present invention, the sewage in front of the device main body is blocked by a sewage blocking means, and the sewage in front of this sewage blocking means is drained to the rear in the direction of movement of the device main body by a drainage means, and while the device main body moves inside the existing sewer pipe, the inner wall of the existing sewer pipe is rehabilitated by a rehabilitation means, thereby making it possible to significantly reduce the work time and work costs required to rehabilitate the inner wall of the sewer pipe and increase safety. Furthermore, according to the invention described in claim 1 of the present invention, the bulkhead is provided on the front side of the device body so as to block the entire inside of the existing sewer pipe, and therefore a working space is formed on the rear side in the direction of movement of the device body, making it easy to carry out the rehabilitation work on the inner wall of the existing sewer pipe using the rehabilitation means. Furthermore, according to the invention described in claim 1 of the present invention, the cutter member is rotatably arranged on the front side of the bulkhead of the device main body, so that deposits on the existing sewer pipe can be removed and cleaned, and by spraying high-pressure cleaning water from the spraying means toward the inner wall of the existing sewer pipe from around the cutter member, it is possible to spray high-pressure cleaning water to clean the inner wall before carrying out the rehabilitation work on the inner wall of the existing sewer pipe.

[0020] Furthermore, the claims of the present invention 2 According to the invention described in claim 1 In addition to the effects described above, the drainage means has a tip provided at the intake port of the bulkhead, and sewage from the front of the bulkhead is taken in from the tip and discharged to the rear of the device body by a screw conveyor, making it possible to carry out rehabilitation work while the sewage in the sewer pipe continues to flow normally.

[0021] Furthermore, the claims of the present invention 3 According to the invention described above, in addition to the effects of the invention described in claim 1, the rehabilitation means has an assembly device that installs a large number of inner surface coating panels on the inner wall of an existing sewer pipe, and is configured so that a filler material is injected between these inner surface coating panels and the existing sewer pipe, thereby making it possible to easily install the inner surface coating panels on the inner wall of the existing sewer pipe and to improve the durability and smoothness of the inner wall of the sewer pipe.

[0022] Furthermore, the claims of the present invention 4According to the invention described in claim 1, in addition to the effect of the invention described in claim 1, since the rehabilitation means is a device that sprays or applies a coating material to the inner wall surface of an existing sewer pipe, even if the inner wall surface of the existing sewer pipe is uneven, it is possible to smooth out the unevenness and easily adapt to curved parts of the existing sewer pipe, thereby improving versatility. In addition, the spraying or application of the coating material using the spraying or application device allows the condition of the existing sewer pipe to be directly visually confirmed and diagnosed, making it possible to repair and reinforce the existing sewer pipe according to its corrosion status, etc.

[0023] Furthermore, the claims of the present invention 5 According to the invention described in In addition to the effect of the invention described in claim 1, the seal and The bulkhead forms a working space behind the moving direction of the device body, and the drainage means bulkhead By draining the sewage in front of the device to the rear in the direction of movement of the device body and rehabilitating the inner wall of the existing sewer pipe with the rehabilitation means, the inner wall of the sewer pipe can be rehabilitated in a dry work space, thereby significantly improving work efficiency. [Brief explanation of the drawings]

[0025] [Figure 1] 1 is a cross-sectional configuration diagram showing a state in which a sewer pipe rehabilitation device according to a first embodiment of the present invention is installed inside a sewer pipe. [Figure 2] 2 is a cross-sectional configuration diagram showing the state of the sewer pipe rehabilitation device according to the first embodiment in FIG. 1 as viewed from the front in the direction of advancement. FIG. [Figure 3] 5(a) and 5(b) are schematic diagrams showing a state in which the inside of a sewer pipe is cleaned by each high-pressure jet nozzle of the sewer pipe rehabilitation device according to the first embodiment. [Figure 4] FIG. 3 is a schematic diagram showing an example of adding an abrasive to a high-pressure jet nozzle of the sewer pipe rehabilitation device according to the first embodiment. [Figure 5] 3 is a schematic cross-sectional view showing a state in which sewage is bypassed in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 6]3 is a schematic cross-sectional view showing a state before a part of an invert is removed and an installation frame is installed in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 7] 3 is a schematic cross-sectional view showing a state in which a bypass pipe is inserted into a bulkhead of a shield machine in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 8] 4 is a schematic cross-sectional view showing a state in which a drainage pump is installed behind a screw conveyor and connected to a bypass pipe in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 9] 3 is a schematic cross-sectional view showing a state in which a drainage pump is being retrieved in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 10] 1 is a schematic cross-sectional view showing a state in which a shield machine is advanced to a distance where all of the following carriages can fit in during the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 11] 3 is a schematic cross-sectional view showing a state in which a shield machine is advanced to perform internal coating in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. [Figure 12] FIG. 6 is a cross-sectional view showing a state in which a sewer pipe rehabilitation device according to a second embodiment of the present invention is installed inside a sewer pipe. [Figure 13] 13 is a cross-sectional configuration diagram showing the state of the sewer pipe rehabilitation device according to the second embodiment as seen from the front in the propulsion direction in FIG. 12. FIG. [Figure 14] 10 is a schematic diagram showing an example of removing deposits and the like using a cutter bit in the sewer pipe rehabilitation device according to each embodiment. FIG. [Figure 15] 1A, 1B, and 1C are schematic diagrams showing the cutter head type of the sewer pipe rehabilitation device according to each embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] Hereinafter, each embodiment of the present invention will be described in detail with reference to the drawings.

[0027] [First embodiment] FIG. 1 is a cross-sectional view showing a state in which a sewer pipe rehabilitation device according to a first embodiment of the present invention is installed inside a sewer pipe. FIG. 2 is a cross-sectional view showing a state in which the sewer pipe rehabilitation device according to the first embodiment in FIG. 1 is viewed from the front in the direction of advancement. FIGS. 3(a) and 3(b) are schematic diagrams showing a state in which the inside of a sewer pipe is cleaned by each high-pressure jet nozzle of the sewer pipe rehabilitation device according to the first embodiment. FIG. 4 is a schematic diagram showing an example in which an abrasive is added to the high-pressure jet nozzle of the sewer pipe rehabilitation device according to the first embodiment. FIG. 5 is a schematic cross-sectional view showing a drainage device of the sewer pipe rehabilitation device according to the first embodiment.

[0028] The sewer pipe rehabilitation device 1 of this embodiment has a shield machine 10 as the device main body, as shown in Figures 1 and 2, and is a device that propels (moves) the inside of an existing sewer pipe 2 using this shield machine 10 to rehabilitate its inner wall 2a while leaving the existing sewer pipe 2 in place. The shield machine 10 of this embodiment is formed in a circular shape when viewed from the front, as shown in Figure 2. The shield machine 10 is mainly equipped with a drive and propulsion device, lining equipment and lining devices, and is provided with a center bending device in response to construction conditions such as curves in the existing sewer pipe 2, and may be configured to be separated into a front body, a rear body, etc.

[0029] As shown in Fig. 1, the shield machine 10 has a cylindrical skin plate (outer shell) 11, and a sled 12 is provided between this skin plate 11 and the inner wall 2a of the existing sewer pipe 2. The shield machine 10 is configured to be able to move within the existing sewer pipe 2 using this sled 12. Note that although the sleds 12 are installed above and below the shield machine 10 in Fig. 1, they may also be installed on the left and right sides of the shield machine 10 as needed.

[0030] Three rows of existing pipe seals 13 are provided between the skin plate 11 and the inner wall 2a of the existing sewer pipe 2. These existing pipe seals 13 have the function of preventing the sewage S in front of the shield machine 10 from flowing into the shield machine 10 and the work space 9 behind it. In this embodiment, a seal-shaped existing pipe seal 13 is provided, but this is not limiting and other shapes, such as a tube shape, may be used to stop water. Also, in this embodiment, three rows of tail seals 14 are provided between the skin plate 11 and the inner surface covering panel 7 on the rear side of the shield machine 10. The spaces between the brushes of these tail seals 14 are configured to be automatically filled with sealing grease as needed.

[0031] 1 and 2, the shield machine 10 is equipped with a plurality of jacks 15 mounted in the circumferential direction as a propulsion means, and is configured so that the shield machine 10 moves forward by the reaction force generated when the jacks 15 press against the tip side of the inner surface covering panel 7 installed by an erector device (described later). Note that the shield machine 10 may also move forward by gripping the inner wall 2a of the existing sewer pipe 2 with a gripper or the like, like a tunnel boring machine (TBM).

[0032] A bulkhead (partition) 21 serving as a sewage blocking means is disposed on the front side of the shield machine 10 in the direction of its advancement, and this bulkhead (partition) 21 has the function of blocking the sewage S in front of the shield machine 10. This bulkhead 21 is provided so as to block the entire opening in the existing sewer pipe 2, so a working space 9 is formed on the rear side of the shield machine 10 in the direction of movement.

[0033] A cutter head 22 is provided in front of the bulkhead 21 as a rotatably arranged cutter member. Specifically, the cutter head 22 is supported by a drive shaft 23 on the bulkhead 21 and is attached so as to protrude forward (toward the working face) in the advancing direction of the shield machine 10. The cutter head 22 is attached so as to be rotatable clockwise or counterclockwise via the drive shaft 23 by a motor (not shown). As shown in Figures 1 and 2, this cutter head 22 is formed in a straight line with two spokes 22a, and is used to remove deposits from inside the existing sewer pipe 2 and clean the inside of the sewer pipe 2.

[0034] The cutter head 22 is not limited to having two spokes 22a, but may have four or more spokes 22a arranged at a fixed angle to each other in the circumferential direction. The cutter head 22 is not limited to a spoke type, but may be configured as a face plate with a large number of cutter bits arranged thereon, as described below. The cutter head 22 is not limited to a center shaft support type, but may be supported by an intermediate support type or a peripheral support type depending on the shape and size of the sewer pipe 2. If there is a concern about adhesion or redeposition of sediments, an agitator blade may be provided on the back side of the cutter head 22 to prevent this. In this embodiment, fixed blades may also be provided on the bulkhead 21.

[0035] At the tip of the spokes 22a of the cutter head 22, a high-pressure jet nozzle 25 for high-pressure washing as a jetting means is disposed, and by jetting high-pressure washing water from this high-pressure jet nozzle 25, it is possible to wash the inner wall 2a of the existing sewer pipe 2. The high-pressure jet nozzle 25 is a linear jet nozzle 25a shown in FIG. 3(a) or a 3 The oblique injection nozzle 25b shown in FIG. 1 As shown in FIG. 3(a), the high-pressure cleaning water supplied from the spokes 22a in the radial direction of the cutter head 22 may be sprayed in a straight line by a straight spray nozzle 25a, or may be sprayed diagonally forward (or diagonally backward) by an oblique spray nozzle 25b, as shown in FIG. 3(b).

[0036] 3(a) and 3(b), a corroded portion C has formed in the existing sewer pipe 2, and this corroded portion C is removed by the straight jet nozzle 25a or the oblique jet nozzle 25b. Furthermore, cleaning water for the straight jet nozzle 25a and the oblique jet nozzle 25b can be supplied by a pump from a water tank mounted inside the shield machine 10, or alternatively, the tip of a hose can be connected to the spokes 22a, the rear end of the hose can be extended to the ground, and water can be supplied by a pump from a water tank installed on the ground.

[0037] Furthermore, the abrasive addition nozzle 25c shown in Figure 4 is formed so that the tip of the addition flow path 25c2 is connected to the vicinity of the tip of the straight flow path 25c1, and abrasive is added from the addition flow path 25c2 to the high-pressure cleaning water flowing through the straight flow path 25c1, thereby significantly improving cleaning performance.

[0038] As shown in Figure 1, a high-pressure injection device 26 for preventing blockage of the screw conveyor (described later) is installed on the bulkhead 21 so as to protrude forward in the direction of advancement of the shield machine 10. Although Figures 1 and 2 show an example in which this high-pressure injection device 26 is attached to one location on the bulkhead 21, it may also be attached to multiple locations on the bulkhead 21. Note that in the case of sewage with little rainwater or foreign matter in the sewer pipe 2, only a drainage pipe may be installed instead of the screw conveyor.

[0039] In addition, the bulkhead 21 In the mouthA tip 27a of a screw conveyor 27 is provided as a drainage means, and a rear end 27b of the screw conveyor 27 is provided behind the shield machine 10. A pressure pump 28 and a drainage pipe 29 (shown in FIG. 5) are connected to the rear end 27b, and a filter 30 is provided in the drainage pipe 29. The rear end of the drainage pipe 29 passes under the vertical shaft 4 on the rear side of the shield machine 10 in the advancing direction and penetrates a weir 5 installed in the sewer pipe 2. As shown in FIG. 6, after an earth retaining wall 31 is installed around the outer periphery of the manhole 6, the upper part of the manhole 6 is removed, the invert 3 is removed, a stage is assembled, the shield machine 10 is assembled on the stage, and the manhole 6 is finally restored. Then, by driving the screw conveyor 27 and pressure pump 28, sewage S in front of the bulkhead 21 is taken in from the tip 27a and discharged through the pressure pump 28, filter 30, and drainage pipe 29 to the rear of the weir 5. In addition, when the amount of drainage or rainwater is large, drainage can be efficiently achieved by providing a propeller drainage pump instead of the pressure pump 28.

[0040] The shield machine 10 is equipped with an erector device (assembly device) 32 as a rehabilitation means, and this erector device 32 installs a large number of inner surface covering panels 7 on the inner wall 2a of the existing sewer pipe 2. The erector device 32 is provided with an assembly operation part 32a that can rotate along the circumferential direction of the inner wall 2a of the existing sewer pipe 2. This assembly operation part 32a is configured to be able to grip one inner surface covering panel 7.

[0041] As a result, one inner surface coated panel 7 is installed on the inner wall 2a of the existing sewer pipe 2 using the assembly operation unit 32a of the erector device 32, and then the assembly operation unit 32a is rotated to a predetermined angle to install the inner surface coated panels 7 sequentially around the entire circumference. Then, after the shield machine 10 is moved forward, multiple inner surface coated panels 7 are installed in the same manner as above. The space between these inner surface coated panels 7 and the inner wall 2a of the existing sewer pipe 2 is configured to be filled with filler material 8. This filler material 8 is injected from filler members 33 attached to the inner surface coated panels 7.

[0042] Next, a construction procedure at the time of starting will be described as an example of construction using the sewer pipe rehabilitation device 1 according to this embodiment.

[0043] FIG. 6 is a schematic cross-sectional view showing a state before a portion of the invert has been removed and an installation frame has been installed in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. 7 is a schematic cross-sectional view showing a state in which a bypass pipe is inserted into the bulkhead of the shield machine in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. 8 is a schematic cross-sectional view showing a state in which a drainage pump is installed behind the screw conveyor and connected to the bypass pipe in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. 9 is a schematic cross-sectional view showing a state in which the drainage pump is retrieved in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. 10 is a schematic cross-sectional view showing a state in which the shield machine is advanced to a distance where all of the following carriages can fit in in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment. FIG. 11 is a schematic cross-sectional view showing a state in which the shield machine is advanced and internal coating is performed in the construction procedure of the sewer pipe rehabilitation device according to the first embodiment.

[0044] As shown in FIG. 6, a weir 5 (or wall member) is installed in an existing sewer pipe 2, and a drainage pump 28 Bypass pipe 29 By connecting the shield machine 10 to the invert 3, the sewage S in the existing sewer pipe 2 is bypassed. Then, if necessary, the invert 3 is partially removed and a support frame 37 for supporting the shield machine 10 shown in Figure 7 is installed to ensure a work area 38. The support frame 37 is designed to fully take into account the weight of the shield machine 10, and is firmly installed using H-beams and rail materials. The sewer pipe rehabilitation device 1 is transported in sections, and the transported sections are assembled, and a trailing cart 39 required for the operation of the shield machine 10 is installed on the ground. The hatch 21b provided in the bulkhead 21 is opened, and the bypass pipe 29 The hatch 21b of the bulkhead 21 is provided to allow access to the weir 5 and drainage pump in the existing sewer pipe 2. 28 Since the container will be transported, it is necessary to ensure sufficient opening dimensions.

[0045] Next, as shown in Figure 8, the shield machine 10 is advanced using jacks 15 or the like and penetrated into the existing sewer pipe 2. At this time, it is confirmed that the seal of the shield machine 10 against the existing sewer pipe 2 is functioning sufficiently to ensure watertightness. A drainage pump 35 is connected to the rear of the screw conveyor 27, and this drainage pump 35 is connected to a bypass pipe 36, which is then connected to the drainage pipe 29.

[0046] 9, the weir 5 inside the existing sewer pipe 2 is removed through the hatch 21b of the shield machine 10. After this, drainage is performed using the screw conveyor 27 and drainage pump 35 of the shield machine 10. Then, the pressure pump 28 and drainage pipe 29 inside the existing sewer pipe 2 are recovered. In addition, the hatch 21b of the bulkhead 21 is closed.

[0047] As shown in Figure 10, the shield machine 10 is advanced to a distance where the trailing carriage 39 can be fully inserted into the tunnel. As the shield machine 10 advances, the rear drainage pump 35 is moved and the bypass pipe 36 is extended. Then, initial excavation equipment (not shown) is removed and the trailing carriage 39 is carried into the existing sewer pipe 2. At this time, care must be taken to ensure that the screw conveyor 27 and drainage pump 35 do not stop functioning, for example by directly supplying a separate power source.

[0048] Additionally, an inner surface coating panel 7 is carried in from the vertical shaft 4 and transported into the shield machine 10 by a transport device (not shown). As the shield machine 10 moves forward, the inner wall 2a of the existing sewer pipe 2 is cleaned with a high-pressure jet from the tips of the spokes 22a of the cutter head 22, while at the rear of the shield machine 10, the inner surface coating panel 7 is grasped by an erector device 32 and assembled inside the inner wall 2a of the existing sewer pipe 2.

[0049] The sewage S flowing through the sewer pipe 2 during construction is taken in by a screw conveyor 27 at the front of the shield machine 10 and sent to the existing sewer pipe 2 behind the shaft 4 by driving a drainage pump 35. A temporary weir 5a is installed between the existing sewer pipe 2 and the shaft 4 to prevent backflow, and garbage and the like is removed by a filter (not shown) installed in the middle of the bypass pipe 36.

[0050] Furthermore, when the shield machine 10 reaches the arrival shaft 4, it is divided into sections within the shaft 4, and the divided sections are transported from the shaft 4 to the outside. At this time, a weir is installed near the arrival shaft 4 as needed to secure a work area 38. Thereafter, this work is repeated for each specified span.

[0051] According to this embodiment, the sewage S in front of the shield machine 10 is blocked by the bulkhead 21, and the sewage S in front of this bulkhead 21 is drained to the rear of the direction of movement of the shield machine 10 by the screw conveyor 27. As the shield machine 10 moves inside the existing sewer pipe 2, the inner wall 2a of the existing sewer pipe 2 is reinforced by the erector device 32, thereby making it possible to significantly reduce the work time and work costs required to rehabilitate the inner wall 2a of the sewer pipe 2.

[0052] In addition, according to this embodiment, the bulkhead 21 is provided on the front side of the shield machine 10 so as to block the entire inside of the existing sewer pipe 2, and therefore a work space 9 is formed on the rear side in the direction of movement of the shield machine 10, making it easy to perform reinforcement work on the inner wall 2a of the existing sewer pipe 2 using the erector device 32.

[0053] Furthermore, according to this embodiment, the cutter head 22 is rotatably arranged in front of the bulkhead 21 of the shield machine 10, so that deposits A on the existing sewer pipe 2 can be removed and cleaned, and by spraying high-pressure cleaning water from the high-pressure spray nozzle 25 from around the cutter head 22 toward the inner wall 2a of the existing sewer pipe 2, it is possible to spray high-pressure cleaning water to clean the inner wall before performing reinforcement work on the inner wall 2a of the existing sewer pipe 2.

[0054] According to this embodiment, the screw conveyor 27 is connected to the intake of the bulkhead 21. In the mouth tip 27a The sewage S on the front side of the bulkhead 21 is provided at the tip 27a By taking in the water from the inside and discharging it behind the shield machine 10, reinforcement work can be carried out while the sewage S in the sewer pipe 2 continues to flow normally.

[0055] Furthermore, according to this embodiment, the erector device 32 is an assembly device that installs a large number of inner surface coating panels 7 on the inner wall 2a of the existing sewer pipe 2, and is configured so that filler 8 is injected between these inner surface coating panels 7 and the existing sewer pipe 2, thereby making it possible to easily install the inner surface coating panels 7 on the inner wall 2a of the existing sewer pipe 2 and improving the durability and smoothness of the inner wall 2a of the sewer pipe 2.

[0056] Furthermore, according to this embodiment, a weir 5 is installed in front of the shaft 4 to block the sewage S and form a work area 38, and the sewer pipe rehabilitation device 1 is arranged within this work area 38. The weir 5 is then removed, and the sewage S in front of the shaft 4 is drained to the rear of the shaft 4 by the screw conveyor 27 while being reinforced within the work area 38 by the inner wall 2a of the existing sewer pipe 2, thereby facilitating the reinforcement work for rehabilitating the inner wall 2a of the sewer pipe 2 and enabling a significant reduction in work time and costs.

[0057] In addition, according to this embodiment, an existing pipe seal 13 is provided between the inner wall 2a of the existing sewer pipe 2 and the shield machine 10, and this existing pipe seal 13 and the bulkhead 21 form a work space 9 behind the movement direction of the shield machine 10, and the sewage S in front of the bulkhead 21 is drained behind the movement direction of the shield machine 10 by the screw conveyor 27, and the inner wall 2a of the existing sewer pipe 2 is renovated by the erector device 32, so that the inner wall 2a of the sewer pipe 2 can be renovated in a dry work space 9, thereby significantly improving work efficiency.

[0058] [Second embodiment] Fig. 12 is a cross-sectional view showing a state in which a sewer pipe rehabilitation device according to a second embodiment of the present invention is installed in a sewer pipe. Fig. 13 is a cross-sectional view showing a state in which the sewer pipe rehabilitation device according to the second embodiment in Fig. 12 is viewed from the front in the direction of advancement. In this embodiment, parts that are the same as or correspond to those in the first embodiment are given the same reference numerals, and different configurations and action Explain.

[0059] In the first embodiment, the rehabilitation means was an erector device 32, which is an assembly device, that installed a large number of inner surface coating panels 7 on the inner wall 2a of the existing sewer pipe 2. However, in this embodiment, as shown in FIG. 12, a coating material 40 is sprayed or applied to the surface of the inner wall 2a of the existing sewer pipe 2 from the rear of the shield machine 10. An automatic spraying device may be used for this. The material of the coating material 40 may be a cement-based material or a resin-based material. The coating material 40 sprayed or applied to the surface of the inner wall 2a is flattened by being pressed down by a pressing formwork 41 supplied from the erector device 32.

[0060] In this embodiment, an anchor may be driven into the inner wall 2a of the sewer pipe 2 behind the shield machine 10, a fixing member 42 such as a bolt may be attached to the anchor, and the fixing member may be pressed with a jack 15, causing the shield machine 10 to move forward by the reaction force. After the shield machine 10 has been moved forward, the fixing member 42 is removed.

[0061] The construction procedure of this embodiment is almost the same as that of the first embodiment, but instead of the procedure of carrying in the inner surface coating panel 7 from the shaft 4 in the first embodiment, the coating material 40 is carried in through the rear bulkhead of the shield machine 10. Then, the coating material 40 is sprayed onto the inner wall 2a of the existing sewer pipe 2 while the shield machine 10 is moved forward.

[0062] Thus, according to this embodiment, the rehabilitation means is a device that sprays or applies the coating material 40 onto the surface of the inner wall 2a of the existing sewer pipe 2, so even if unevenness is formed on the surface of the inner wall 2a of the existing sewer pipe 2, it is possible to smooth out the unevenness, and it is also possible to easily accommodate curved portions of the existing sewer pipe 2, thereby improving versatility.

[0063] Furthermore, according to this embodiment, the spraying or application of the coating material using the spraying or application device allows the condition of the existing sewer pipe to be directly visually confirmed and diagnosed, making it possible to repair and reinforce the existing sewer pipe in accordance with its corrosion condition, etc.

[0064] [Modifications of each embodiment] FIG. 14 is a schematic diagram showing an example of removing deposits and the like using a cutter bit in the sewer pipe rehabilitation device according to each embodiment.

[0065] The faceplate-shaped cutter head 22 shown in Figure 14 has multiple cutter bits 24 arranged circumferentially, and the type, shape, material, arrangement, etc. of these cutter bits 24 are determined to suit the conditions and construction requirements when removing deposits A and consolidated areas B, or when removing facilities inside the sewer pipe 2 such as invert 3.

[0066] 15(a), (b), and (c) are schematic diagrams showing the cutter head types of the sewer pipe rehabilitation devices according to the respective embodiments.

[0067] The outer diameter and external shape of the shield machine 10 in each of the above-described embodiments are formed to correspond to the outer diameter and internal shape of the existing sewer pipe 2. Specifically, as shown in Figures 2 and 13, the outer diameter and external shape of the existing sewer pipe 2 are circular as shown in Figure 15(a), and therefore the external shape of the shield machine 10 is also formed to be circular when viewed from the front. Furthermore, in cases where an invert 3 is formed in the existing sewer pipe 2 as shown in Figure 15(b), or where the existing sewer pipe 2 is formed in a horseshoe shape as shown in Figure 15(c), the external shape of the shield machine 10 is formed to correspond to those shapes.

[0068] 15(a), (b), and (c), an existing pipe clearance 45 is formed between the existing sewer pipe 2 and the shield machine 10. These existing pipe clearances 45 are set taking into consideration the shape and dimensions of the inner surface coating, the tail seal 14, etc.

[0069] [Another embodiment of the invention] Although various embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be embodied in various other forms, and various omissions, substitutions, modifications, and combinations can be made without departing from the spirit of the invention. These embodiments are included within the scope and spirit of the invention, as well as within the scope of the inventions described in the claims and their equivalents.

[0070] For example, in each of the above embodiments, bulkhead 21 is provided in front of shield machine 10 so as to block the entire inside of existing sewer pipe 2, and therefore work space 9 is formed behind shield machine 10 in the direction of movement, making it possible to reinforce inner wall 2a of existing sewer pipe 2 while diagnosing the condition of inner wall 2a of existing sewer pipe 2. In this case, in order to diagnose the inner wall 2a of existing sewer pipe 2, it is usually necessary to drain sewage S from inside existing sewer pipe 2.

[0071] In the first embodiment, an example was described in which the rehabilitation means was applied to an erector device 32 that installs a large number of inner surface covering panels 7 on the inner wall 2a of an existing sewer pipe 2, and in the second embodiment, an example was described in which the rehabilitation means was applied to an apparatus that sprays or applies a covering material 40 to the surface of the inner wall 2a of an existing sewer pipe 2. However, the rehabilitation means of the present invention is not limited to these devices. for , Used in conjunction with rehabilitation measures Inspection equipment for the inner wall 2a of the sewer pipe 2, inspection equipment, defective part removal equipment, structural reinforcement equipment, corrosion prevention function imparting equipment, smoothing equipment for the inner wall 2a surface, etc. Attachment means are also included. [Explanation of symbols]

[0072] 1 Sewer pipe rehabilitation equipment 2 Existing sewer pipes 2a inner wall 3 Invert 4 Shaft 5 Weir 5a Temporary Weir 6 holes 7. Inner surface covering panel 8 Filler 9. Workspace 10 Shield machine (main body) 11 Skin plate (outer shell) 11a Hatch 12 Sled 13 Existing pipe sealing 14 Tail seal 15 Jack (propulsion means) 21 Bulkhead (sewer shutoff means) 21a intake 21b Hatch 22 Cutter head (cutter member) 22a spokes 23 Drive shaft 24 cutter bits 25 High-pressure injection nozzle (injection means) 25a Straight injection nozzle 25b Oblique injection nozzle 25c Abrasive Addition Nozzle 26 High-pressure injection device 27 Screw conveyor (drainage means) 27a Tip 27b Rear end 28 Pressure pump 29 Drain pipe 30 filters 31 Earth retaining wall 32 Erector device (rehabilitation means) 33 Filler material 35 Drainage pump 36 Bypass tube 37 Support stand 38 Work Area 39 Trailing Bogie 40 Covering material 41 Pressing formwork 42 Fixing member 45 Existing pipe clearance A. Sediments B Consolidation part C Corroded area S Sewer

Claims

1. A sewer pipe rehabilitation device in which a device body moves inside an existing sewer pipe to reinforce the inner wall of the sewer pipe and rehabilitate the sewer pipe, The device body includes: a bulkhead disposed on the front side of the device body in the moving direction so as to close the entire inside of the existing sewer pipe; a seal provided around the bulkhead, abutting against the inner wall of the existing sewer pipe, and working together with the bulkhead to block the infiltration of sewage into the device body on the front side of the device body; a drainage means for draining the sewage in front of the bulkhead to the rear in the direction of movement of the device body; a rehabilitation means for rehabilitating an inner wall of the existing sewer pipe within a working space on the rear side of the device body in the direction of movement; a cutter member rotatably disposed on the front side of the bulkhead via a drive shaft, the cutter member having an outer periphery disposed near an inner wall surface of the existing sewer pipe; and a jetting means disposed on the outer periphery of the cutter member for jetting high-pressure washing water toward the inner wall of the existing sewer pipe, A sewer pipe rehabilitation device characterized in that, when the cutter member rotates via the drive shaft, the cutter member rotates against deposits in the existing sewer pipe in front of the bulkhead, and the spraying means sprays the high-pressure cleaning water toward the inner wall of the existing sewer pipe to clean the inner wall.

2. The sewer pipe rehabilitation device according to claim 1, characterized in that the drainage means is a screw conveyor having a tip provided at the intake port of the bulkhead, which takes in the sewage in front of the bulkhead from the tip and drains it to the rear of the device body.

3. The sewer pipe rehabilitation device according to claim 1, characterized in that the rehabilitation means has an assembly device that installs a number of inner surface coating panels on the inner wall of the existing sewer pipe, and is configured so that filler material is injected between these inner surface coating panels and the existing sewer pipe.

4. 2. The sewer pipe rehabilitation device according to claim 1, wherein the rehabilitation means is a device that sprays or applies a coating material onto the inner wall surface of the existing sewer pipe.

5. The sewer pipe rehabilitation device according to claim 1, characterized in that the seal and the bulkhead form the working space on the rear side of the device body in the direction of movement, the drainage means drains the sewage in front of the bulkhead to the rear side of the device body in the direction of movement, and the rehabilitation means rehabilitates the inner wall of the existing sewer pipe.

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