A trenchless repair device for partial damage to storm and sewage pipes

Abstract

This invention belongs to the field of trenchless repair technology for underground pipelines, specifically relating to a trenchless repair device for partial damage to storm and sewage pipes. The device includes a repair section capable of cleaning the inner wall of the pipe and applying repair material through rotation. Support sections are fixedly connected to both ends of the repair section, and the support components are tightly fitted to the inner wall of the pipe. A drive section is located inside the support section, enabling it to move along the inner wall of the pipe, thereby driving the entire device to move. The repair section includes a fixed rod with a rotating cylinder rotatably mounted in the middle. A monitoring seat is fixedly connected to the middle of the rotating cylinder, and sliding seats are slidably mounted on the outer edges of both ends of the rotating cylinder. An elastic compression member is positioned between the sliding seats and the monitoring seat. This invention enables trenchless in-situ repair, simultaneously completing cleaning and coating, adaptively conforming to the pipe wall, and integrating cleaning and recycling, coating curing, and visualized remote control functions, improving construction accuracy, efficiency, and safety.

Description

Technical Field

[0001] This invention belongs to the field of trenchless repair technology for underground pipelines, specifically relating to a trenchless repair device for partial damage to rainwater and sewage pipes. Background Technology

[0002] With the acceleration of urbanization, the aging and damage of underground stormwater and sewage pipe networks are becoming increasingly prominent. Localized damage to pipes, such as cracks, disconnections, and leaks, if not repaired promptly, can easily lead to secondary disasters such as road collapses and groundwater pollution. Traditional open-cut pipe replacement repair methods have significant drawbacks, including long construction periods, traffic disruptions, high costs, and substantial impacts on the surrounding environment and residents' lives. Therefore, trenchless repair technology is gradually becoming the main development direction for stormwater and sewage pipe repair.

[0003] Common techniques include using inflatable airbags to press resin-impregnated fiber cloth onto the damaged area, allowing the resin to cure and form a repair layer, or using a spraying robot to spray repair material onto the inner wall of the pipe. However, these existing cleaning and coating processes are separate, resulting in low construction efficiency. Typically, a high-pressure cleaning truck or other separate equipment is used to pre-treat the damaged area of ​​the pipe to remove sludge, grease, and other debris adhering to the pipe wall, followed by the application of repair material using a coating device. These two separate processes not only prolong the construction time but also mean that the pipe wall may be re-wetted or contaminated by wastewater after cleaning, affecting the adhesion of the repair material. Meanwhile, after long-term use, the inner walls of storm and sewage pipes often exhibit changes in pipe diameter, elliptical deformation, and local unevenness. Existing repair devices mostly use fixed-diameter support structures or rely on flexible expansion of airbags, making it difficult to provide uniform and stable bonding pressure in the circumferential direction. This can easily lead to uneven repair layer thickness or local non-bonding, affecting the repair quality. Meanwhile, most existing technologies only complete the coating or pressing of the repair material. Subsequent curing requires a separate configuration of ultraviolet lamps or other curing equipment, making the construction process cumbersome and the curing waiting time long. During this period, the repair layer is easily displaced or lost due to the impact of water flow in the pipe. Meanwhile, in traditional trenchless repair construction, it is difficult for operators to directly observe the damage inside the pipeline and the repair process. They rely more on experience to make judgments, which makes it difficult to guarantee construction accuracy and safety. Especially in harsh or dangerous pipeline environments, the risk of personnel entering is high. Existing technologies require a trenchless repair device that can simultaneously perform cleaning and coating, adapt to various pipe diameters, and integrate cleaning and recycling, photocuring, and visual remote control to improve the construction accuracy, efficiency, and safety of repairing local damage to storm and sewage pipes. Summary of the Invention

[0004] The purpose of this invention is to provide a trenchless repair device for localized damage to stormwater and sewage pipes, which can achieve trenchless in-situ repair, simultaneously complete cleaning and coating, adaptively fit the pipe wall, and integrate cleaning and recycling, coating curing and visual remote control functions, thereby improving construction accuracy, efficiency and safety.

[0005] The specific technical solution adopted by this invention is as follows: A trenchless repair device for partial damage to storm and sewage pipes includes a repair section, which can clean the inner wall of the pipe and apply repair material by rotation. Support sections are fixedly connected to both ends of the repair section. The support section is tightly fitted to the inner wall of the pipe. A drive section is provided inside the support section, which can drive the support section to move on the inner wall of the pipe, thereby driving the entire device to move. The repair unit includes a fixed rod, a rotating cylinder rotatably mounted in the middle of the fixed rod, a monitoring seat fixedly connected in the middle of the rotating cylinder, sliding seats slidably mounted on the outer edges of both ends of the rotating cylinder, an elastic pressing member between the sliding seats and the monitoring seat, support rods rotatably mounted on both the upper and lower ends of the sliding seats, a fitting seat rotatably mounted on the other end of the support rod, and a rotating motor fixedly mounted inside the fixed rod, with the output end of the rotating motor meshing with one end of the rotating cylinder.

[0006] In a preferred embodiment, the outer edge of the rotating cylinder has multiple limiting grooves, and the limiting grooves are slidably connected to the interior of the sliding seat.

[0007] In a preferred embodiment, the monitoring base integrates an LED lighting module and a camera.

[0008] In a preferred embodiment, a nozzle and an absorption seat are fixedly installed inside one of the fitting seats. The input end of the nozzle is connected to an external high-pressure pump through a pipe, and the absorption seat is connected to an external extraction pump through a pipe.

[0009] In a preferred embodiment, another internal part of the bonding base is fixedly provided with a spray nozzle, which is connected to an external feed pump. The bonding base also integrates an ultraviolet curing lamp, the irradiation direction of which is directly facing the discharge area of ​​the spray nozzle.

[0010] In a preferred embodiment, the support includes a fixed seat, a mounting seat, a connecting rod, a linkage rod, and an elastic return member. One end of the fixed seat is fixedly connected to one end of the fixed rod. The mounting seat is slidably disposed inside the fixed seat. One end of the connecting rod is rotatably connected to the fixed seat. One end of the linkage rod is rotatably connected to the other end of the connecting rod. The other end of the linkage rod is slidably connected to the mounting seat. The elastic return member is disposed between the fixed seat and the mounting seat.

[0011] In a preferred embodiment, the connecting rod and the linkage rod are a set of bent support structures, and four support structures are arranged in a ring around the outer edge of the fixed seat and the mounting seat.

[0012] In a preferred embodiment, the drive unit includes a drive wheel, a driven wheel, a drive motor, a transmission belt, and a limiting wheel. The drive wheel is rotatably disposed at the rotational connection point of the connecting rod and the linkage rod. The driven wheel is rotatably disposed at the rotational connection point of another connecting rod and the linkage rod. The drive motor is fixedly disposed inside the mounting base. The inner side of the transmission belt contacts the outer edge of the drive wheel and the output end of the drive motor. The limiting wheel is rotatably disposed inside the mounting base, and the limiting wheel presses the transmission belt toward the output end of the drive motor.

[0013] In a preferred embodiment, both the outer circumferential surfaces of the drive wheel and the driven wheel are provided with anti-slip textures or rubber outer layers, and the drive motor is a servo motor.

[0014] In a preferred embodiment, the camera inside the monitoring unit is electrically connected to a control terminal via a cable. The control terminal is used to display images of the inner wall of the pipe and to control the movement of the drive unit and the cleaning and coating actions of the repair unit.

[0015] The technical effects achieved by this invention are as follows: This invention employs a structure combining a repair section, a support section, and a drive section. The device can directly enter the pipeline to perform non-excavation in-situ repair of damaged locations, avoiding ground excavation, reducing construction costs and impacts on traffic and the environment. The repair section uses a rotating cylinder to drive the fitting seat to rotate circumferentially along the pipe wall, simultaneously completing pipe wall cleaning and repair material coating. These two processes are completed in one step, significantly improving work efficiency. The support section uses four sets of bent support structures to evenly expand and press against the pipe wall from four directions, achieving automatic centering and stable support. The support force is evenly distributed and can effectively adapt to changes in pipe diameter and uneven pipe wall surfaces. This invention employs an adaptive bonding structure that combines an elastic extruder with a support rod. The elastic force of the elastic extruder continuously presses the bonding seat against the inner wall of the pipe through the support rod, ensuring that the bonding seat remains tightly attached to the pipe wall during rotation, thus guaranteeing the uniformity of cleaning and coating. Simultaneously, the limiting groove on the outer edge of the rotating cylinder is slidably connected to the sliding seat, allowing the sliding seat to adaptively slide along the axial direction while rotating synchronously with the rotating cylinder. This ensures that the bonding seat adheres to the pipe wall with constant pressure, improving the repair quality. This invention employs an integrated cleaning and recycling structure, an integrated coating and curing structure, and a visual remote control structure. One of the bonding seats integrates a nozzle and an absorption seat, enabling simultaneous cleaning and recycling to prevent secondary pollution caused by wastewater diffusion. The other bonding seat integrates a spray nozzle and an ultraviolet curing lamp, enabling simultaneous coating and curing, shortening the solidification time of the repair material, and ensuring the quality of the repair layer. The monitoring seat integrates a camera and an LED lighting module, enabling visual observation inside the pipeline and remote control of the device through a control terminal, improving construction accuracy and operational safety, and reducing the risk of personnel entering the pipeline. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an embodiment of the present invention located inside a pipe; Figure 2 This is an overall schematic diagram of an embodiment of the present invention; Figure 3 This is an overall exploded view of an embodiment of the present invention; Figure 4 This is an exploded view of the repair section according to an embodiment of the present invention; Figure 5 This is an exploded view of the support and drive parts according to an embodiment of the present invention; Figure 6 This is an exploded view of the drive unit according to an embodiment of the present invention; Figure 7 This is a side sectional view of the repair section according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the nozzle and absorbent seat at the fitting seat according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the spray nozzle and ultraviolet curing lamp at the bonding seat in an embodiment of the present invention; Figure 10 This is a schematic diagram of a monitoring base according to an embodiment of the present invention.

[0017] The attached diagram lists the components represented by each number as follows: 1. Repair section; 101. Fixing rod; 102. Rotating cylinder; 103. Monitoring seat; 104. Sliding seat; 105. Elastic extrusion component; 106. Support rod; 107. Adhesion seat; 1071. Nozzle; 1072. Absorption seat; 1073. Spray nozzle; 1074. UV curing lamp; 108. Drive motor; 2. Support section; 201. Fixing seat; 202. Mounting seat; 203. Connecting rod; 204. Linkage rod; 205. Elastic recovery component; 3. Drive section; 301. Drive wheel; 302. Driven wheel; 303. Drive motor; 304. Transmission belt; 305. Limit wheel. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0020] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0021] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0022] Please see Figures 1 to 10 As shown, the present invention provides a trenchless repair device for partial damage to rainwater and sewage pipes, including a repair part 1. The repair part 1 can clean the inner wall of the pipe and apply repair material by rotating. Support parts 2 are fixedly connected to both ends of the repair part 1. The support part 2 supports the device in close contact with the inner wall of the pipe. A drive part 3 is provided inside the support part 2. The drive part 3 can drive the support part 2 to move on the inner wall of the pipe, thereby driving the device to move as a whole. Repair unit 1 includes a fixed rod 101, a rotating cylinder 102 rotatably mounted in the middle of the fixed rod 101, a monitoring seat 103 fixedly connected in the middle of the rotating cylinder 102, sliding seats 104 slidably mounted on the outer edges of both ends of the rotating cylinder 102, an elastic pressing member 105 between the sliding seat 104 and the monitoring seat 103, support rods 106 rotatably mounted on both the upper and lower ends of the sliding seat 104, a fitting seat 107 rotatably mounted on the other end of the support rod 106, a rotating motor 108 fixedly mounted inside the fixed rod 101, and the output end of the rotating motor 108 meshing with one end of the rotating cylinder 102.

[0023] Specifically, after the device enters the rainwater and sewage pipes, it reaches the location of the localized damage under external control; First, the support part 2 moves outward and fits tightly against the inner wall of the pipe, so that the whole device is stably supported and centered in the pipe, ensuring that the contact pressure between the fitting seat 107 and the pipe wall is uniform when the repair part 1 rotates. Then the rotating motor 108 in the repair section 1 is started, and the rotating cylinder 102 is driven to rotate on the fixed rod 101 through meshing. When the rotating cylinder 102 rotates, the sliding seats 104 at both ends of it are driven to rotate synchronously through the limiting structure. Under the elastic force of the elastic extrusion member 105, the sliding seat 104 is always subjected to the pulling force in the direction of the monitoring seat 103, thereby pressing the bonding seat 107 against the inner wall of the pipe through the support rod 106, so that the bonding seat 107 always adapts to the pipe wall during the rotation process, adapts to changes in pipe diameter and uneven surfaces, and ensures uniform coating. As the rotating cylinder 102 continues to rotate, the fitting seat 107 moves circumferentially along the inner wall of the pipe, cleaning the pipe wall around the damaged area, and then applying repair material. The two processes are completed in one go, improving work efficiency.

[0024] Please see Figure 4 and Figure 10 As shown, the outer edge of the rotating cylinder 102 has multiple limiting grooves. The limiting grooves are slidably connected to the inside of the sliding seat 104, so that when the rotating cylinder 102 rotates, it can reliably drive the sliding seat 104 to rotate synchronously through the limiting grooves. At the same time, the sliding seat 104 can slide axially in the limiting grooves, thereby adaptively adjusting the axial position under the elastic force of the elastic extrusion member 105, ensuring that the fitting seat 107 is always tightly attached to the inner wall of the pipe with constant pressure.

[0025] Please see Figure 10 As shown, the monitoring base 103 integrates an LED lighting module and a camera, which can provide sufficient lighting in the dark environment inside the pipeline. The camera can also collect images of the inner wall of the pipeline in real time, making it easy for operators to clearly observe the damaged location, cleaning effect and repair material coating during the repair process, realizing visualized operation and improving repair accuracy and construction quality.

[0026] Please see Figure 8 As shown, a nozzle 1071 and an absorption seat 1072 are fixedly installed inside one of the fitting seats 107. The input end of the nozzle 1071 is connected to an external high-pressure pump through a pipe. The nozzle 1071 sprays high-pressure water or cleaning medium onto the pipe wall through the external high-pressure pump to perform deep cleaning of the damaged area. The absorption seat 1072 is connected to an external extraction pump through a pipeline. The absorption seat 1072 simultaneously sucks away the sewage and impurities generated during cleaning through the external extraction pump. The two components work together to achieve simultaneous cleaning and recycling, preventing wastewater from spreading along the pipes and causing secondary pollution, while keeping the work area relatively dry, creating good adhesion conditions for subsequent coating and repair materials.

[0027] Please see Figure 9As shown, another internal part of the bonding base 107 is fixedly provided with a spray nozzle 1073, which is connected to an external feed pump. The bonding base 107 also integrates an ultraviolet curing lamp 1074, and the irradiation direction of the ultraviolet curing lamp 1074 is directly facing the discharge area of ​​the spray nozzle 1073. The spray nozzle 1073 sprays the repair material onto the damaged area through an external feed pump. The UV curing lamp 1074 is directed towards the discharge area of ​​the spray nozzle 1073, which enables UV curing immediately after the repair material is applied. This allows for simultaneous application and curing, shortening the curing time of the repair material, improving repair efficiency, and preventing uncured material from being lost or displaced by the water flow in the pipeline, thus ensuring the forming quality and adhesion strength of the repair layer.

[0028] Please see Figures 1 to 3 as well as Figure 5 As shown, the support part 2 includes a fixed base 201, a mounting base 202, a connecting rod 203, a linkage rod 204, and an elastic return member 205. One end of the fixed base 201 is fixedly connected to one end of the fixed rod 101. The mounting base 202 is slidably disposed inside the fixed base 201. One end of the connecting rod 203 is rotatably connected to the fixed base 201. One end of the linkage rod 204 is rotatably connected to the other end of the connecting rod 203. The other end of the linkage rod 204 is slidably connected to the mounting base 202. The elastic return member 205 is disposed between the fixed base 201 and the mounting base 202. When the support part 2 is working, the mounting base 202 slides inside the fixed base 201 under the drive of external force. When the mounting base 202 slides, it pushes one end of the linkage rod 204 to move. The other end of the linkage rod 204 drives the connecting rod 203 to open outward around the rotating connection point on the fixed base 201, so that the hinge of the connecting rod 203 and the linkage rod 204 is pushed outward and pressed against the inner wall of the pipe, so as to achieve stable support and centering of the device in the pipe. Meanwhile, the elastic recovery element 205 is compressed and stores energy between the fixed seat 201 and the mounting seat 202. Its elastic force continuously acts on the mounting seat 202, so that the connecting rod 203 and the linkage rod 204 always maintain the tendency to expand outward, providing continuous positive pressure to the drive unit 3, ensuring that the drive unit 3 is in close contact with the pipe wall, thereby generating sufficient friction to drive the device to move along the pipeline.

[0029] Please see Figures 1 to 3 as well as Figure 5 As shown, the connecting rod 203 and the linkage rod 204 form a set of bent support structures, and four support structures are arranged in a ring around the outer edge of the fixed base 201 and the mounting base 202; When the four sets of support structures expand outwards simultaneously, they can press evenly against the inner wall of the pipe from four directions, enabling the device to automatically center itself inside the pipe and distribute the support force evenly, preventing the device from tilting or deviating. At the same time, the multi-point support can effectively adapt to local unevenness or slight deformation of the inner wall of the pipe, improving the stability and reliability of the device's support inside the pipe.

[0030] Please see Figure 5 and Figure 6 As shown, the drive unit 3 includes a drive wheel 301, a driven wheel 302, a drive motor 303, a transmission belt 304, and a limiting wheel 305. The drive wheel 301 is rotatably disposed at the rotational connection point of the connecting rod 203 and the linkage rod 204. The driven wheel 302 is rotatably disposed at the rotational connection point of another connecting rod 203 and the linkage rod 204. The drive motor 303 is fixedly disposed inside the mounting base 202. The inner side of the transmission belt 304 is in contact with the outer edge of the drive wheel 301 and the output end of the drive motor 303. The limiting wheel 305 is rotatably disposed inside the mounting base 202, and the limiting wheel 305 presses the transmission belt 304 against the output end of the drive motor 303. When the drive unit 3 is working, the drive motor 303 starts, and its output end drives the transmission belt 304 to rotate through friction. The limit wheel 305 presses the transmission belt 304 against the output end of the drive motor 303, increasing the wrap angle and friction between the transmission belt 304 and the output end, preventing slippage and ensuring reliable power transmission. After the transmission belt 304 rotates, it drives the drive wheel 301 to rotate. Under the positive pressure applied by the support part 2, the drive wheel 301 is in close contact with the inner wall of the pipe and drives the entire device to move along the pipe by friction. The driven wheel 302 rotates at the hinge of the other connecting rod 203 and the linkage rod 204, providing auxiliary support and guidance for the device and ensuring smooth movement of the device.

[0031] Please see Figures 1 to 3 as well as Figure 5 As shown, the outer circumferential surfaces of both the drive wheel 301 and the driven wheel 302 are provided with anti-slip textures or rubber outer layers, and the drive motor 303 is a servo motor. The outer circumferential surfaces of the drive wheel 301 and the driven wheel 302 are provided with anti-slip textures or rubber outer layers, which can increase the coefficient of friction between the drive wheel 301 and the driven wheel 302 and the inner wall of the pipe, improve the efficiency of driving force transmission, avoid slipping on the wet and slippery inner wall of the pipe, and ensure that the device moves stably and reliably. The drive motor 303 is a stepper motor or a servo motor, which can precisely control the speed and rotation angle of the drive wheel 301, thereby achieving precise control of the moving distance and speed of the device, making it easier to accurately deliver the repair part 1 to the damaged position and improve the repair positioning accuracy.

[0032] Please see Figure 4 , Figure 7 and Figure 10 As shown, the camera inside the monitoring unit 103 is electrically connected to the control terminal via a cable. The control terminal is used to display images of the inner wall of the pipe and to control the movement of the drive unit 3 and the cleaning and coating actions of the repair unit 1. The camera inside the monitoring unit 103 is electrically connected to the control terminal via a cable. The control terminal is used to display images of the inner wall of the pipeline and control the movement of the drive unit 3 and the cleaning and coating actions of the repair unit 1. This allows operators to remotely observe the inside of the pipeline in real time from the ground, and accurately control the device to move to the target area and perform repair work based on the image information of the damaged location. This achieves visualization and remote control of the entire repair process, improves construction accuracy and operational safety, and reduces the risk of personnel entering the pipeline.

[0033] The working principle of this invention is as follows: after the device enters the rainwater and sewage pipe, it reaches the location of the local damage under external control; First, the support part 2 moves outward and fits tightly against the inner wall of the pipe, so that the whole device is stably supported and centered in the pipe, ensuring that the contact pressure between the fitting seat 107 and the pipe wall is uniform when the repair part 1 rotates. Then the rotating motor 108 in the repair section 1 is started, and the rotating cylinder 102 is driven to rotate on the fixed rod 101 through meshing. When the rotating cylinder 102 rotates, the sliding seats 104 at both ends of it are driven to rotate synchronously through the limiting structure. Under the elastic force of the elastic extrusion member 105, the sliding seat 104 is always subjected to the pulling force in the direction of the monitoring seat 103, thereby pressing the bonding seat 107 against the inner wall of the pipe through the support rod 106, so that the bonding seat 107 always adapts to the pipe wall during the rotation process, adapts to changes in pipe diameter and uneven surfaces, and ensures uniform coating. As the rotating cylinder 102 continues to rotate, the fitting seat 107 moves circumferentially along the inner wall of the pipe, cleaning the pipe wall around the damaged area, and then applying repair material. The two processes are completed in one go, improving work efficiency.

[0034] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A trenchless repair device for partial damage to stormwater and sewage pipes, characterized in that: The device includes a repair section (1), which can clean the inner wall of the pipe and apply repair material by rotating. Both ends of the repair section (1) are fixedly connected to a support section (2). The support section (2) is in close contact with the inner wall of the pipe. The support section (2) is provided with a drive section (3) inside. The drive section (3) can drive the support section (2) to move on the inner wall of the pipe, thereby driving the entire device to move. The repair unit (1) includes a fixed rod (101), a rotating cylinder (102) is rotatably disposed in the middle of the fixed rod (101), a monitoring seat (103) is fixedly connected in the middle of the rotating cylinder (102), a sliding seat (104) is slidably disposed on the outer edge of both ends of the rotating cylinder (102), an elastic pressing member (105) is disposed between the sliding seat (104) and the monitoring seat (103), a support rod (106) is rotatably disposed at both the upper and lower ends of the sliding seat (104), a fitting seat (107) is rotatably disposed at the other end of the support rod (106), a rotating motor (108) is fixedly disposed inside the fixed rod (101), and the output end of the rotating motor (108) meshes with one end of the rotating cylinder (102).

2. The trenchless repair device for partial damage to stormwater and sewage pipes according to claim 1, characterized in that: The outer edge of the rotating cylinder (102) has multiple limiting grooves, which are slidably connected to the inside of the sliding seat (104).

3. The trenchless repair device for partial damage to stormwater and sewage pipes according to claim 1, characterized in that: The monitoring base (103) integrates an LED lighting module and a camera.

4. The trenchless repair device for partial damage to stormwater and sewage pipes according to claim 1, characterized in that: One of the fitting seats (107) is fixedly provided with a nozzle (1071) and an absorption seat (1072). The input end of the nozzle (1071) is connected to an external high-pressure pump through a pipe, and the absorption seat (1072) is connected to an external extraction pump through a pipe.

5. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 4, characterized in that: Another internal part of the bonding seat (107) is fixedly provided with a spray nozzle (1073), which is connected to an external feed pump. The bonding seat (107) also integrates an ultraviolet curing lamp (1074), and the irradiation direction of the ultraviolet curing lamp (1074) is directly facing the discharge area of ​​the spray nozzle (1073).

6. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 1, characterized in that: The support part (2) includes a fixed seat (201), a mounting seat (202), a connecting rod (203), a linkage rod (204), and an elastic return member (205). One end of the fixed seat (201) is fixedly connected to one end of the fixed rod (101). The mounting seat (202) is slidably disposed inside the fixed seat (201). One end of the connecting rod (203) is rotatably connected to the fixed seat (201). One end of the linkage rod (204) is rotatably connected to the other end of the connecting rod (203). The other end of the linkage rod (204) is slidably connected to the mounting seat (202). The elastic return member (205) is disposed between the fixed seat (201) and the mounting seat (202).

7. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 6, characterized in that: The connecting rod (203) and the linkage rod (204) are a set of bent support structures, and four of the support structures are arranged in a ring around the outer edge of the fixed seat (201) and the mounting seat (202).

8. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 6, characterized in that: The drive unit (3) includes a drive wheel (301), a driven wheel (302), a drive motor (303), a transmission belt (304), and a limiting wheel (305). The drive wheel (301) is rotatably disposed at the rotational connection point of the connecting rod (203) and the linkage rod (204). The driven wheel (302) is rotatably disposed at the rotational connection point of another connecting rod (203) and the linkage rod (204). The drive motor (303) is fixedly disposed inside the mounting base (202). The inner side of the transmission belt (304) is in contact with the outer edge of the drive wheel (301) and the output end of the drive motor (303). The limiting wheel (305) is rotatably disposed inside the mounting base (202), and the limiting wheel (305) presses the transmission belt (304) against the output end of the drive motor (303).

9. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 8, characterized in that: The outer circumferential surfaces of the drive wheel (301) and the driven wheel (302) are provided with anti-slip textures or rubber outer layers, and the drive motor (303) is a servo motor.

10. A trenchless repair device for partial damage to stormwater and sewage pipes according to claim 1, characterized in that: The camera inside the monitoring unit (103) is electrically connected to the control terminal via a cable. The control terminal is used to display images of the inner wall of the pipe and to control the movement of the drive unit (3) and the cleaning and coating actions of the repair unit (1).

Images