Non-excavation local repair device for sewage pipeline

Abstract

The utility model discloses a non-excavation local repairing device for a sewage pipeline, belongs to the field of pipeline repairing devices, is used for pipelines, and comprises an outer shell with a walking mechanism and a working table, the working table is connected with a pushing device and a guide shaft body, and the guide shaft body is arranged in a guide shaft sleeve in a sliding mode; an adjusting base is arranged on the top face of the workbench, a lifting guide block is arranged in the adjusting base in a sliding mode, a lifting driver is arranged in the adjusting base, and the lifting driver is connected with the lifting guide block. A material spraying chassis is arranged on the top surface of the lifting guide block, a slurry spraying head is arranged on the side surface of the material spraying chassis, and the slurry spraying head is communicated with an external material supply pipeline through a material spraying connector; and the pushing device and the lifting driver are connected with the hydraulic interface through a hydraulic pipeline. The large-diameter sewage pipeline can be repaired, blocky water leakage points can be efficiently repaired, and the problems that the workload is large and the efficiency is low possibly caused by excavation are solved.

Description

Technical Field

[0001] This application belongs to the field of pipeline repair devices, and more specifically, it relates to a trenchless partial repair device for sewage pipelines. Background Technology

[0002] There are many and complex underground pipes in cities. Taking large-diameter sewage pipes as an example, after a long period of use, the pipes may be damaged locally due to changes in the external environment. Local damage may lead to leakage of internal media and contamination of the surrounding soil.

[0003] To address this issue, existing technology provides a construction device and method for trenchless point repair of sewage pipelines, as described in Chinese Patent Publication No. CN113107067A. This device includes a repair body with an adjustable limiting device on its outer wall for fixing it, and a positioning device at its bottom for wrapping repair material around the pipeline. The adjustable limiting device secures the repair body within the manhole, preventing it from shaking during material application and ensuring proper adhesion between the material and the pipeline, thus improving repair effectiveness. The positioning device ensures the repair material tightly wraps around the pipeline, increasing adhesion and effectively sealing the damaged area to prevent leakage. Furthermore, the repair body can repair the damaged area directly from the outside, eliminating the need to enter the pipeline and improving repair efficiency.

[0004] However, the applicant argues that it only addresses point-like damage, while when the damage is in a larger, blocky form, an internal support structure is often needed to fix the repair material in order to achieve better adhesion between the repair material and the pipe. Summary of the Invention

[0005] The purpose of this application is to provide a trenchless partial repair device for sewage pipelines, which can repair large-diameter sewage pipelines and efficiently repair block leaks, avoiding the problems of large workload and low efficiency that may be caused by excavation.

[0006] To achieve the above objectives, this application employs the following technical solution:

[0007] The trenchless partial repair device for sewage pipelines described in this application includes an outer shell with traveling mechanisms at both ends. A worktable is mounted on the outer shell, a pushing device is mounted on one side of the worktable, and a guide shaft is mounted on the other side. The pushing device is mounted on the outer shell, and the guide shaft is slidably disposed within a guide sleeve. An adjusting base is mounted on the top surface of the worktable, and a lifting guide block is slidably disposed within the adjusting base. A lifting driver is disposed inside the adjusting base and connected to the lifting guide block. A spraying chassis is mounted on the top surface of the lifting guide block, and a slurry nozzle is mounted on the side of the spraying chassis. The slurry nozzle is connected to an external supply pipeline through a spraying interface. The pushing device and the lifting driver are connected to a hydraulic interface through hydraulic pipelines.

[0008] As one of the preferred technical solutions of this application, the walking mechanism includes a hinge seat located on the outer side of the end of the outer shell; the bottom end of a wheel support rod is hinged to the hinge seat, and a walking wheel with a hub motor is installed at the top end of the wheel support rod; a spreading mechanism is provided between adjacent wheel support rods.

[0009] As one of the preferred technical solutions of this application, the spreading mechanism includes an adjusting rod, which is slidably disposed in a groove within a support guide groove via a sliding shaft. The support guide groove is located on the wheel support rod. The adjusting rod is fixedly connected to an adjusting column seat, which extends into the interior of the outer shell after passing through the shell end cover. An inner shaft is inserted into the adjusting column seat, and the adjusting column seat and the inner shaft slide relative to each other during the screwing in and out of the threaded rod. The threaded rod adjusting end is located outside the shell end cover, and the threaded section of the threaded rod is threadedly connected to a threaded hole, which is located at the insertion end of the inner shaft and the adjusting column seat. The shell end cover is located at both ends of the opening of the outer shell.

[0010] As one of the preferred technical solutions of this application, the adjusting column base is connected to a sliding support plate at the end that extends into the outer shell. A sliding groove is provided at the position where the sliding support plate contacts the inner wall of the outer shell. A slide rail is provided at the position corresponding to the sliding groove of the sliding support plate in the outer shell. The slide rail is a long strip protruding from the inner wall of the outer shell.

[0011] As one of the preferred technical solutions of this application, the outer shell is provided with a central support plate at the middle position inside, the central support plate is fixedly connected to the inner shaft of the shell, and the inner shaft of the shell is coaxially arranged with the outer shell.

[0012] As one of the preferred technical solutions of this application, a high-pressure water pipe is provided at the end cap of the outer shell in the direction of travel. The high-pressure water pipe extends forward in the direction of travel, and a high-pressure nozzle is provided at the end of the high-pressure water pipe. The high-pressure nozzle is a rotating nozzle, and the tail end of the high-pressure water pipe extends from the end cap of the outer shell in the direction of travel.

[0013] As one of the preferred technical solutions of this application, side limiting plates are fixedly provided on both sides of the outer shell, and the two ends of the side limiting plates are fixedly connected to the outer shell end plates at corresponding positions. The outer shell end plates are fixedly connected to the outer shell at the hinge seat position. The side limiting plates are provided with side guide holes in the length direction. The side guide holes are elongated through holes, and the worktable moves along the side guide holes through the bottom guide limiting shaft.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] This application enables targeted repair of discovered large-diameter sewage pipes, avoiding the problems of low efficiency and large workload that may be caused by excavation construction, thereby improving construction efficiency and ensuring construction quality. Attached Figure Description

[0016] Figure 1 This is the three-dimensional representation of the present application. Figure 1 .

[0017] Figure 2 This is the three-dimensional representation of the present application. Figure 2 .

[0018] Figure 3 This is the three-dimensional representation of the present application. Figure 3 .

[0019] Figure 4 This is the main view of this application.

[0020] Figure 5 yes Figure 4 A cross-sectional view at the position and direction shown in AA.

[0021] In the diagram: 1. Outer shell; 2. Side limiting plate; 3. Worktable; 4. Guide limiting shaft; 5. Side guide hole; 6. Outer shell end plate; 7. Hinge seat; 8. Wheel support rod; 9. Wheel; 10. Support guide groove; 11. Adjusting rod; 12. Threaded rod adjusting end; 13. Adjusting column seat; 14. Shell end cover; 15. Power plug; 16. Hydraulic interface; 17. Spraying interface; 18. Adjusting base; 19. Lifting guide block; 20. Spraying chassis; 21. Slurry nozzle; 22. Platform guide shaft; 23. Pushing device; 24. High-pressure water pipe; 25. High-pressure nozzle; 26. Lifting driver; 27. Threaded rod; 28. Threaded hole; 29. ​​Inner shell shaft; 30. Sliding support plate; 31. Middle support plate; 32. Guide bushing; 33. Guide shaft. Detailed Implementation

[0022] The technical solutions described in this application will be further described below with reference to the accompanying drawings and embodiments.

[0023] like Figures 1 to 5 As shown, a trenchless partial repair device for sewage pipelines includes an outer shell 1, which is a hollow cylindrical tube structure. Shell end caps 14 are fixedly installed at the openings at both ends of the outer shell 1. Several hinge seats 7 are distributed on the outer wall of the end near the shell end caps 14. An outer shell end plate 6 composed of annular plates is fixedly connected to the outer side near the hinge seats 7. The hinge seats 7 are located on the outer wall of the outer shell 1 between the shell end plate 6 and the shell end caps 14, and are evenly distributed around the central axis of the outer shell 1.

[0024] The outer shell 1 has symmetrically arranged side limiting plates 2 on both sides, and the side limiting plates 2 are long rectangular plates. The two ends of the side limiting plates 2 are respectively connected to and fixed to the outer shell end plates 6 at corresponding positions. The side limiting plates 2 have side guide holes 5 of the same length as them along their length direction, and the side guide holes 5 are rectangular through holes or blind holes.

[0025] A platform guide shaft 22 is also provided between the outer shell end plates 6. The platform guide shaft 22 is located above the side limiting plate 2 and is symmetrically arranged on both sides of the outer shell 1.

[0026] A pushing device 23 and a guide sleeve 32 are respectively provided at the position of the outer shell end plate 6 between the guide shafts 22 of the platform. The tail end of the pushing device 23 is fixed to the outer shell end plate 6, and the telescopic end of the pushing device 23 is fixedly connected to the side of the worktable 3 at the corresponding position. The guide sleeve 32 is disposed on the other side of the outer shell 1 relative to the pushing device 23. A guide shaft 33 is coaxially slidably disposed inside the guide sleeve 32, and the guide shaft 33 is fixedly connected to the worktable 3.

[0027] The bottom surface of the worktable 3 is respectively attached to the side limiting plate 2 and the outer wall of the outer shell 1 and is slidably disposed relative to both. Under the push of the pushing device 23, the worktable 3 slides along the platform guide shaft 22.

[0028] An adjusting base 18 is fixedly mounted on the top surface of the workbench 3. A lifting driver 26 is installed inside the adjusting base 18. Both the lifting driver 26 and the pushing device 23 are hydraulic cylinders. The bottom surface of the lifting driver 26 is fixed to the bottom surface of the adjusting base 18, and the telescopic end of the lifting driver 26 is connected to the lifting guide block 19 above. The adjusting base 18 has a cavity for accommodating the lifting driver 26 and the adjusting base 18. The lifting guide block 19 is slidably disposed relative to the adjusting base 18 within the adjusting base 18.

[0029] The bottom end of the lifting guide block 19 is inserted into the adjusting base 18 and moves relative to the adjusting base 18 under the action of the lifting drive 26. The top surface of the lifting guide block 19 is fixedly connected to the bottom surface of the spraying chassis 20. The top of the spraying chassis 20 is open, and a groove is formed inside the spraying chassis 20 to accommodate a plurality of slurry nozzles 21. The slurry nozzles 21 are located on both sides of the spraying chassis 20. The slurry nozzles 21 are connected to an external supply pipeline through a spraying interface 17, which extends out through the worktable 3 and the outer casing end plate 6.

[0030] The hinge seat 7 is hinged to the bottom end of the wheel support rod 8, and the top end of the wheel support rod 8 is provided with a wheel 9, which is a walking wheel with a hub motor. The wheel support rod 8 has a support guide groove 10 machined on its inner side facing the housing end cover 14. The support guide groove 10 is a groove that extends a certain length along the length direction of the wheel support rod 8, which is sufficient to meet the movement distance required by the adjusting rod 11 connected to it when the wheel support rod 8 is opened. The threaded rod adjusting end 12 can drive the integrally set threaded rod 27 to be screwed into or out of the threaded hole 28. During the screwing in and out process, the threaded rod 27 should not be disengaged from the threaded hole 28. During the screwing in and out process of the threaded rod 27, the threaded rod 27 can drive the adjusting column seat 13 to move relative to the inner shaft 29 of the housing through the threaded rod adjusting end 12. The movement of the adjusting column seat 13 relative to the inner shaft 29 of the housing can drive the adjusting rod 11 connected to it to move relative to the wheel support rod 8. The movement of the adjusting rod 11 relative to the wheel support rod 8 can drive the adjusting rod 11 to move relative to the support guide groove 10, so as to realize that the wheel support rod 8 is circumferentially opened relative to the outer shell 1, thereby satisfying the contact between the wheel 9 and the inner wall of the outer shell 1. Since the threaded rod 27 and the threaded hole 28 adopt a self-locking thread in this application, they can be guaranteed not to separate or rotate relative to each other during use, thereby ensuring stable contact between the wheel 9 and the inner wall of the outer shell 1.

[0031] The adjusting rod 11 has a sliding shaft at the connection point with the wheel support rod 8. The sliding shaft is slidably connected to the groove in the support guide groove 10. The end of the adjusting rod 11 away from the wheel support rod 8 is fixedly connected to the adjusting column seat 13. The adjusting column seat 13 has a threaded rod adjusting end 12 on the end face outside the housing end cover 14. The threaded rod adjusting end 12 is threadedly connected to the housing end cover 14 through a threaded rod 27. The end of the threaded rod 27 that extends into the housing 1 is threadedly connected to a threaded hole 28. The threaded hole 28 is located at the end of the inner shaft 29 and is coaxial with the inner shaft 29.

[0032] The adjusting column 13 has a blind hole coaxially arranged on its end face that extends into the housing 1. The adjusting column 13 is slidably connected to the shaft 29 inside the housing through the blind hole.

[0033] The inner shaft 29 is fixedly connected to the central support plate 31, which is fixedly connected to the middle position inside the outer shell 1.

[0034] The adjusting column base 13 is provided with a sliding support plate 30 at its position extending into the interior of the outer shell 1. The sliding support plate 30 has a sliding groove at the position where it contacts the inner wall of the outer shell 1. The sliding support plate 30 is slidably connected to a slide rail at a corresponding position on the inner wall of the outer shell 1 through the sliding groove. The slide rail is composed of a long strip-shaped protrusion protruding from the inner wall of the outer shell 1.

[0035] The outer casing 1 is also provided with a high-pressure water pipe 24 in front of the direction of travel. The high-pressure water pipe 24 extends forward in the direction of travel, and a high-pressure nozzle 25 is provided at the end of the high-pressure water pipe 24. The high-pressure nozzle 25 is a rotating nozzle, that is, it can rotate relative to the high-pressure water pipe 24 under the action of water flow, thereby cleaning the inner wall of the sewage pipe.

[0036] The pushing device 23 and the lifting drive 26 are both connected to the hydraulic interface 16 via hydraulic lines. The hydraulic interface 16 is located at the end cap 14 of the outer shell 1. The wheel 9 is connected to the power supply plug 15 via wiring. The power supply plug 15 is located on the end cap 14 of the outer shell.

[0037] The slurry nozzle 21 extends through the spraying interface 17 through the corresponding outer shell end plate 6 and is connected to the external supply pipeline.

[0038] Under the above technical solution, the working process of this application is as follows:

[0039] Before using the device, the inner wall of the sewage pipe needs to be cleaned with a high-pressure water cleaning device. Then, a detection device, such as a video device, is used to survey the inside of the large-diameter sewage pipe to obtain the location information of the damaged location and video images of the damage. This allows the top working position of the workbench 3 to face the damaged location of the sewage pipe, and the outer shell 1 and the walking mechanism are placed into the sewage pipe while maintaining this orientation.

[0040] As the outer shell 1 and the walking mechanism including the wheels 9 move forward along the sewage pipe, the outer shell 1 and the worktable 3 can maintain a fixed orientation and move forward along the sewage pipe because the wheels 9 are all facing the same direction and there are multiple wheels arranged circumferentially on the inner wall of the outer shell 1.

[0041] When the outer shell 1 and wheel 9 move forward to near the damaged position, high-pressure water is introduced into the high-pressure water pipe 24. The high-pressure water is sprayed out through the high-pressure nozzle 25 formed by the rotating nozzle at the end of the high-pressure water pipe 24, and the surrounding area of ​​the damaged position is cleaned by the sprayed high-pressure water.

[0042] After cleaning, the control wheel 9 stops the outer casing 1 at the damaged area to be repaired. The push device 23 adjusts the position of the worktable 3 relative to the damaged area. Once aligned, the lifting drive 26 starts working, pushing the lifting guide block 19 away from the worktable 3. The spraying base 20 on the lifting guide block 19 moves towards the damaged area and adheres to the inner wall of the damaged area. After adhesion, the slurry nozzle 21 sprays repair liquid onto the damaged area. After the liquid solidifies, the spraying base 20 moves downwards with the lifting guide block 19 to its reset position. The liquid from the slurry nozzle 21 is connected to an external liquid supply pipeline through the spraying interface 17.

[0043] A temporary video acquisition device needs to be installed on the workbench 3 to acquire video images and facilitate the positioning of the outer casing 1 and the workbench 3.

[0044] After the above work is completed, the entire device can be removed from the large-diameter sewage pipe by operating wheel 9.

Claims

1. A trenchless partial repair device for sewage pipelines, comprising an outer shell (1), wherein a traveling mechanism is provided at both ends of the outer shell (1), characterized in that: A workbench (3) is provided on the outer shell (1). A pushing device (23) is provided on one side of the workbench (3), and a guide shaft (33) is provided on the other side of the workbench (3). The pushing device (23) is installed on the outer shell (1), and the guide shaft (33) is slidably disposed in the guide bushing (32). An adjustment base (18) is provided on the top surface of the workbench (3). A lifting guide block (19) is slidably disposed in the adjustment base (18). A lifting driver (26) is provided inside the adjustment base (18), and the lifting driver (26) is connected to the lifting guide block (19). A spraying chassis (20) is provided on the top surface of the lifting guide block (19), and a slurry nozzle (21) is provided on the side of the spraying chassis (20). The slurry nozzle (21) is connected to the external supply pipeline through the spraying interface (17). The pushing device (23) and the lifting driver (26) are connected to the hydraulic interface (16) through the hydraulic pipeline.

2. The non-excavation partial repair device for sewage pipelines according to claim 1, characterized in that: The walking mechanism includes a hinge seat (7), which is located on the outer side of the end of the outer shell (1); the bottom end of a wheel support rod (8) is hinged to the hinge seat (7), and a walking wheel with a hub motor is installed at the top end of the wheel support rod (8); a spreading mechanism is provided between adjacent wheel support rods (8).

3. The non-excavation partial repair device for sewage pipelines according to claim 2, characterized in that: The opening mechanism includes an adjusting rod (11), which is slidably disposed in a groove in a support guide groove (10) via a sliding shaft. The support guide groove (10) is located on the wheel support rod (8). The adjusting rod (11) is fixedly connected to an adjusting column seat (13), which extends through the housing end cover (14) and into the interior of the outer housing (1). An inner shaft (29) is inserted into the adjusting column seat (13). The adjusting column (13) and the inner shaft (29) slide relative to each other during the screwing in and out of the threaded rod (27); the threaded rod adjusting end (12) of the threaded rod (27) is located outside the end cover (14) of the housing; the threaded section of the threaded rod (27) is threadedly connected to the threaded hole (28); the threaded hole (28) is located at the insertion end of the inner shaft (29) and the adjusting column (13); the end cover (14) of the housing is located at both ends of the opening of the outer housing (1).

4. The non-excavation partial repair device for sewage pipelines according to claim 3, characterized in that: The adjusting column base (13) is connected to a sliding support plate (30) at the end that extends into the outer shell (1). A sliding groove is provided at the position where the sliding support plate (30) contacts the inner wall of the outer shell (1). A slide rail is provided at the position corresponding to the sliding groove of the sliding support plate (30). The slide rail is a long strip protruding from the inner wall of the outer shell (1).

5. The non-excavation partial repair device for sewage pipelines according to claim 4, characterized in that: The outer shell (1) has a central support plate (31) at the middle position inside. The central support plate (31) is fixedly connected to the inner shaft (29). The inner shaft (29) is coaxially arranged with the outer shell (1).

6. A trenchless partial repair device for sewage pipelines according to any one of claims 1 to 5, characterized in that: The outer shell (1) is provided with a high-pressure water pipe (24) at the shell end cap (14) in the forward direction of travel. The high-pressure water pipe (24) extends forward in the forward direction of travel. A high-pressure nozzle (25) is provided at the end of the high-pressure water pipe (24). The high-pressure nozzle (25) is a rotating nozzle. The tail end of the high-pressure water pipe (24) extends from the shell end cap (14) in the rear direction of travel.

7. The non-excavation partial repair device for sewage pipelines according to claim 6, characterized in that: Side limiting plates (2) are fixedly provided on both sides of the outer shell (1). The two ends of the side limiting plates (2) are fixedly connected to the outer shell end plates (6) at the corresponding positions. The outer shell end plates (6) are fixedly connected to the outer shell (1) at the position of the hinge seat (7). The side limiting plates (2) are provided with side guide holes (5) in the length direction. The side guide holes (5) are elongated through holes. The worktable (3) moves along the side guide holes (5) through the bottom guide limiting shaft (4).

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