An underground pipe repair apparatus

Abstract

This utility model discloses an underground pipeline repair device, including a remote-controlled vehicle that moves inside the pipeline and a storage tank for storing repair fluid. The remote-controlled vehicle is equipped with a leveling mechanism, which includes: a fixed frame with a main leveling roller mounted on it, the fixed frame being installed at the bottom of the remote-controlled vehicle; two auxiliary leveling rollers, each connected to the fixed frame via a drive assembly; and a power assembly connected to the two drive assemblies. This utility model has a simple structure. A single power assembly drives two drive assemblies to adjust their angles, thereby simultaneously adjusting the angles of the two auxiliary leveling rollers connected to the drive assemblies. This allows the main and auxiliary leveling rollers to better adapt to pipelines of different sizes. As the fit between the main and auxiliary leveling rollers and the bottom of the pipeline inner wall increases, the repair fluid can be leveled more effectively, allowing it to flow more fully into the pipeline gaps and improving the repair effect.

Description

Technical Field

[0001] This utility model relates to the field of underground pipeline repair technology, specifically an underground pipeline repair device. Background Technology

[0002] Underground pipelines are vital infrastructure widely laid underground, typically used to transport liquids or loose solids. During long-term operation, they are affected by various factors such as geological subsidence, material aging, external dynamic loads, groundwater erosion, and internal media corrosion. Pipelines, especially their lower sections, are subjected to soil pressure, water immersion, and sediment friction, making them more prone to structural defects such as cracks, gaps, corrosion, or localized damage. These defects not only lead to media leakage and reduced transport efficiency but can also cause environmental pollution or safety accidents, severely impacting the normal operation and service life of the pipelines.

[0003] To address the aforementioned issues, trenchless pipeline repair technology has gradually become the mainstream method for pipeline maintenance and repair due to its advantages such as eliminating the need for large-scale ground excavation, short construction periods, and minimal impact on the surrounding environment and traffic. Various trenchless repair devices have been proposed in the existing technology. For example, Chinese utility model patent CN216867907U discloses an underground pipeline repair device that uses a remote-controlled vehicle to carry a storage tank and pump to deliver repair fluid to the damaged area of ​​the pipeline, and uses a leveling roller driven by an electric push rod to level the applied repair fluid.

[0004] However, in practical applications, this technical solution still has significant shortcomings: its leveling roller is rigidly connected to the bottom of the remote-controlled vehicle via an electric push rod, lacking the ability to adaptively adjust to changes in the inner contour of the pipe. Since pipe defects are mostly concentrated in the lower half of the pipe, and this area often experiences irregular deformation or localized unevenness due to settlement or external pressure, the rigidly connected leveling roller struggles to maintain a good fit with complex curved surfaces. Especially at locations with changes in pipe diameter or depressions, problems such as poor contact between the roller and the inner wall and uneven pressure distribution easily occur, leading to inconsistent coating thickness of the repair fluid and poor surface smoothness. This, in turn, affects the uniformity and structural integrity of the repair layer, reducing the overall repair quality. Therefore, an underground pipeline repair device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an underground pipeline repair device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an underground pipeline repair device, comprising a remote-controlled vehicle that moves within the pipeline and a storage tank for storing repair fluid. The storage tank is mounted on the remote-controlled vehicle, and an output mechanism for discharging the repair fluid into the pipeline is installed on the storage tank. A leveling mechanism is installed on the remote-controlled vehicle for leveling the repair fluid against the inner wall of the pipeline. The leveling mechanism includes:

[0007] A fixed frame, on which a main leveling roller is mounted, is installed at the bottom of the remote control vehicle;

[0008] Two sets of leveling rollers, both of which are connected to the fixed frame via a drive assembly;

[0009] A power assembly, which is connected to two drive assemblies, is used to provide power to the two drive assemblies so that the two auxiliary leveling rollers can complete the angle adjustment.

[0010] As a further embodiment of this utility model, the remote control vehicle is also equipped with an electric heating box and a camera for observing the inside of the pipe.

[0011] As a further embodiment of this utility model: the output mechanism includes an on / off valve installed on the remote control vehicle, the input end of the on / off valve is connected to the interior of the liquid storage tank, the output end of the on / off valve is connected to the infusion pipe, and a flow guide is installed at one end of the infusion pipe.

[0012] As a further embodiment of this utility model: an electric push rod connected to the bottom of the remote control car is installed on the top of the fixing frame, and the main leveling roller is disposed inside the fixing frame.

[0013] As a further embodiment of this utility model: the drive assembly includes a rotating rod mounted on a fixed frame, two limiting plates are mounted on the outer circumferential surface of the rotating rod, a worm gear is mounted on the end of the rotating rod near the fixed frame, a worm gear meshing with the worm gear is mounted on the fixed frame, and a synchronous pulley is mounted on the end of the worm gear away from the worm gear.

[0014] As a further embodiment of this utility model: the power assembly includes a fixed motor mounted on a fixed frame, the output end of the fixed motor is connected to one of the synchronous pulleys, and the two synchronous pulleys are connected by a synchronous belt.

[0015] As a further embodiment of this utility model: the leveling mechanism further includes a tensioning assembly, which includes two guide plates mounted on a fixed frame and a sliding plate that slides with the two guide plates. The end of the sliding plate is equipped with a lead screw that is rotatably connected to the fixed frame, and the end of the sliding plate away from the lead screw is equipped with a tensioning wheel that engages with a synchronous belt.

[0016] As a further embodiment of this utility model: both guide plates are provided with sliding grooves, and two guide blocks located in the sliding grooves are installed on the sliding plates.

[0017] As a further aspect of this invention: a limiting sleeve is installed at the end of the lead screw away from the sliding plate, and a limiting plate is installed on the limiting sleeve and engages with it. The limiting plate and the fixing frame are slidably connected. When the limiting plate is moved upward, it disengages from the limiting sleeve, at which point the lead screw can rotate freely. If the limiting plate engages with the limiting sleeve on the lead screw, the lead screw cannot rotate freely.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This application uses a power component to drive two drive components to adjust their angles, thereby adjusting the angles of two auxiliary leveling rollers connected to the drive components simultaneously. This allows the main leveling roller and auxiliary leveling rollers to better adapt to pipes of different sizes. As the fit between the main leveling roller, auxiliary leveling roller and the bottom of the inner wall of the pipe increases, the repair fluid can be leveled more effectively, allowing the leveling fluid to flow more fully into the pipe gaps and improving the repair effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the leveling mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the combination of the drive component and the power component of this utility model;

[0023] Figure 4 This is a schematic diagram of the tensioning component and timing belt combination of this utility model;

[0024] Figure 5 This is a schematic diagram of the tensioning component of this utility model;

[0025] Figure 6 This is a schematic diagram of the combination of the limiting plate and the fixing frame of this utility model;

[0026] In the diagram: 1. Remote control car; 2. Electric heating box; 3. Liquid storage tank; 4. Opening and closing valve; 5. Infusion tube; 6. Flow guide; 7. Camera; 8. Leveling mechanism; 9. Electric push rod; 10. Fixing frame; 11. Main leveling roller; 12. Rotating rod; 13. Secondary leveling roller; 14. Limiting plate; 15. Worm gear; 16. Worm; 17. Synchronous pulley; 18. Synchronous belt; 19. Fixed motor; 20. Lead screw; 21. Sliding plate; 22. Guide plate; 23. Guide block; 24. Tensioning wheel; 25. Limiting sleeve; 26. Limiting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-6 In this embodiment of the invention, an underground pipeline repair device includes a remote-controlled vehicle 1 that moves within the pipeline and a storage tank 3 for storing repair fluid. The storage tank 3 is fixedly mounted on the remote-controlled vehicle 1. An output mechanism for discharging the repair fluid into the pipeline is installed on the storage tank 3, and the output mechanism is also fixedly mounted on the remote-controlled vehicle 1. A leveling mechanism 8 is installed on the remote-controlled vehicle 1 to level the repair fluid against the inner wall of the pipeline. While moving within the pipeline, the remote-controlled vehicle 1 also provides support for the storage tank 3, the output mechanism, and the leveling mechanism 8. The leveling mechanism 8 includes:

[0029] A fixing frame 10 is provided with a main leveling roller 11, and the fixing frame 10 is installed at the bottom of the remote control car 1;

[0030] Two sets of leveling rollers 13, both of which are connected to the fixed frame 10 via a drive assembly;

[0031] A power assembly, which is connected to two drive assemblies, is used to provide power to the two drive assemblies so that the two auxiliary leveling rollers 13 can complete the angle adjustment.

[0032] Specifically, the storage tank 3 contains repair fluid for repairing the inside of the pipe. It is fixed to the top of the remote control vehicle 1 and can move with the remote control vehicle 1 to the location that needs repair. The output mechanism is installed on the remote control vehicle 1, with one end connected to the storage tank 3 and the other end located in the forward direction of the remote control vehicle 1 to discharge the repair fluid into the pipe. Then, the leveling mechanism 8 levels the repair fluid at the location to be repaired, so that the repair fluid can better enter the gaps in the pipe. The remote control vehicle 1 is equipped with a controller. The controller is connected to the electric heating box 2, the on / off valve 4 and the fixed motor 19 (the controller is not shown in the figure, and the control principle of the controller, the electric heating box 2, the on / off valve 4 and the fixed motor 19 are all existing technologies, which will not be described in detail here).

[0033] An electric push rod 9, connected to the bottom of the remote-controlled vehicle 1, is installed on the top of the fixed frame 10. Under the action of the electric push rod 9, the distance between the fixed frame 10 and the bottom of the remote-controlled vehicle 1 is adjusted. After the remote-controlled vehicle 1 reaches the corresponding position, the electric push rod 9 extends to allow the main leveling roller 11 to contact the inner wall of the pipe. The main leveling roller 11 is located inside the fixed frame 10, with its outer circumference protruding from the inner side of the fixed frame 10 for easy contact with the inner wall of the pipe. The main leveling roller 11 and the fixed frame 10 are rotatably connected. Therefore, during the movement of the remote-controlled vehicle 1, when the main leveling roller 11 contacts the inner wall of the pipe, due to friction, the main leveling roller 11... The rollers will roll and level the repair fluid inside the pipe. In addition, two auxiliary leveling rollers 13 are respectively set on both sides of the fixed frame 10. The main leveling roller 11 and the two auxiliary leveling rollers 13 roll in the same direction. The auxiliary leveling rollers 13 can be tilted and adjusted relative to the fixed frame 10. The two drive components are driven by the power component to adjust the angle of the two auxiliary leveling rollers 13 to adapt to the inner wall contour of pipes of different sizes. If the pipe size is large, the two auxiliary leveling rollers 13 can be adjusted to a more horizontal state to cover a wider range, thereby better fitting the inner wall of the lower half of the pipe, achieving uniform leveling of the coated repair fluid and improving the repair quality.

[0034] Please see Figure 1 In one embodiment, preferably, the remote control vehicle 1 is also equipped with an electric heating box 2 and a camera 7 for observing the inside of the pipe. Furthermore, a venting cover (not shown in the figure) is installed at the bottom of the remote control vehicle 1. The venting cover is connected to the electric heating box 2. After the repair fluid is leveled, the venting cover blows out hot air to quickly dry the repair fluid.

[0035] Please see Figure 1 In one embodiment, preferably, the output mechanism includes an on / off valve 4 installed on the remote control vehicle 1. The input end of the on / off valve 4 is connected to the interior of the storage tank 3, and the output end of the on / off valve 4 is connected to the infusion pipe 5. A flow guide 6 is installed at one end of the infusion pipe 5. Furthermore, the design of the on / off valve 4 is such that when the on / off valve 4 is opened, the repair fluid inside the storage tank 3 will enter the infusion pipe 5, and then flow through the infusion pipe 5 through the flow guide 6 and finally enter the interior of the pipe. When the amount of repair fluid entering the pipe reaches the limit, the on / off valve 4 is closed, and the repair fluid can no longer be discharged.

[0036] Please see Figure 3In one embodiment, preferably, the drive assembly includes a rotating rod 12 mounted on a fixed frame 10. Two limiting plates 14 are mounted on the outer circumferential surface of the rotating rod 12. A worm gear 15 is mounted on the end of the rotating rod 12 near the fixed frame 10. A worm 16 meshing with the worm gear 15 is mounted on the fixed frame 10. A synchronous pulley 17 is mounted on the end of the worm 16 away from the worm gear 15. Further, the end of the rotating rod 12 is rotatably connected to the fixed frame 10 via a bracket, allowing it to rotate around the bracket axis. The rotating rod 12 is provided with two limiting plates 14, respectively... Located on both sides of the auxiliary leveling roller 13, it is used to axially limit the auxiliary leveling roller 13 and prevent it from falling off the rotating rod 12. The worm wheel 15 is installed on the side of the end of the rotating rod 12, and its rotation direction is the same as the swing direction of the rotating rod 12. The worm wheel 15 meshes with the worm 16. When the worm 16 rotates, it can drive the worm wheel 15 to rotate, thereby adjusting the tilt angle of the rotating rod 12 and realizing the adjustment of the angle of the auxiliary leveling roller 13. The other end of the worm 16 is provided with a synchronous wheel 17, which facilitates the series connection of the synchronous wheels 17 of multiple drive components through the power component to realize synchronous drive.

[0037] Please see Figure 3 In one embodiment, preferably, the power assembly includes a fixed motor 19 mounted on a fixed frame 10. The output end of the fixed motor 19 is connected to one of the synchronous pulleys 17. The two synchronous pulleys 17 are connected by a synchronous belt 18. The outer circumferential surface of the synchronous pulley 17 is provided with external teeth, and the inner wall of the synchronous belt 18 is provided with internal teeth. The internal teeth mesh with the external teeth. When the fixed motor 19 drives one of the synchronous pulleys 17 to rotate, the other synchronous pulley 17 will rotate synchronously under the action of the synchronous belt 18, thereby achieving the effect of one fixed motor 19 driving two drive components to rotate synchronously.

[0038] Please see Figure 4-6In one embodiment, preferably, the leveling mechanism 8 further includes a tensioning assembly. The tensioning assembly includes two guide plates 22 mounted on the fixed frame 10 and a sliding plate 21 that slides with the two guide plates 22. Each guide plate 22 has a groove. The sliding plate 21 is equipped with two guide blocks 23 located in the grooves. The groove design can limit the movement range of the sliding plate 21. The end of the sliding plate 21 is equipped with a lead screw 20 that is rotatably connected to the fixed frame 10, and the sliding plate 21 is away from the fixed frame 10. The end of the lead screw 20 is equipped with a tensioning wheel 24 that engages with the synchronous belt 18. By rotating the lead screw 20, which is threadedly connected to the fixed frame 10, the sliding plate 21 connected to it is driven to slide along the guide plate 22, thereby causing the tensioning wheel 24 mounted on the sliding plate 21 to move synchronously, thereby realizing the tension adjustment of the synchronous belt 18. The tensioning wheel 24 is provided with external teeth that mesh with the internal teeth of the synchronous belt 18. Therefore, the normal transmission function of the synchronous belt 18 is not affected during the tensioning process, thereby dynamically compensating for the elongation or load change of the synchronous belt 18 and ensuring transmission stability.

[0039] A limiting sleeve 25 is installed at the end of the lead screw 20 away from the sliding plate 21. A limiting plate 26 is provided on the limiting sleeve 25 and engages with it. The limiting plate 26 is slidably connected to the fixing frame 10. The limiting plate 26 is made of rubber. The rubber material allows the limiting plate 26 to deform better and engage with the limiting sleeve 25. When the limiting plate 26 is moved upward and disengaged from the limiting sleeve 25, the lead screw 20 can rotate freely, which is convenient for tension adjustment. When the limiting plate 26 is moved downward and engages with the limiting sleeve 25, the lead screw 20 is locked and cannot rotate freely, thereby maintaining the stability of the tension. This structure realizes the adjustability and locking function of the tension state of the synchronous belt 18.

[0040] The working principle and usage process of this utility model are as follows: Construction personnel operate a remote-controlled vehicle 1 to move directionally along the bottom of the underground pipeline. Once the vehicle 1 reaches the position corresponding to the ground detection point, the controller activates the opening and closing valve 4. Under the action of the opening and closing valve 4, the repair fluid inside the storage tank 3 is dripped onto the damaged area at the bottom of the pipeline through the guide shroud 6. The electric push rod 9 drives the main leveling roller 11 to the bottom of the pipeline wall, ensuring the roller 11 remains in contact with the inner wall. At this time, the controller activates the fixed motor 19. The output of the fixed motor 19 drives the synchronous pulley 17. Since the synchronous belt 18 is meshed with the two synchronous pulleys 17, as the output of the fixed motor 19 is activated, the repair fluid is applied to the damaged area at the bottom of the pipeline. The two synchronous pulleys 17 rotate, and since the synchronous pulleys 17 are fixedly connected to the worm gear 16, the rotation of the synchronous pulleys 17 drives the worm gear 16 to rotate, which in turn causes the worm wheel 15, which is meshed with the worm gear 16, to rotate as well. Since the rotating rod 12 is rotatably connected to the fixed frame 10, and the rotating rod 12 is fixedly connected to the worm wheel 15, the rotation of the worm wheel 15 drives the rotating rod 12 to rotate, which in turn causes the auxiliary leveling roller 13, which is rotatably connected to the rotating rod 12, to rotate as well. At this time, the main leveling roller 11 and the auxiliary leveling roller 13 are in contact with the circular inner wall of the pipe. The electric heating box 2 is powered on and heated, and the remote control car 1 reciprocates. At this time, the main leveling roller 11 and the auxiliary leveling roller 13 perform leveling treatment on the repair fluid.

[0041] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0042] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. An underground pipeline repair device, comprising a remote-controlled vehicle that moves within the pipeline and a storage tank for storing repair fluid, the storage tank being mounted on the remote-controlled vehicle, and an output mechanism for discharging the repair fluid into the pipeline being installed on the storage tank, characterized in that, The remote-controlled vehicle is equipped with a leveling mechanism for leveling the repair fluid against the inner wall of the pipe. The leveling mechanism includes: A fixed frame, on which a main leveling roller is mounted, is installed at the bottom of the remote control vehicle; Two sets of leveling rollers, both of which are connected to the fixed frame via a drive assembly; A power assembly, which is connected to two drive assemblies, is used to provide power to the two drive assemblies so that the two auxiliary leveling rollers can adjust their angles.

2. The underground pipeline repair device according to claim 1, characterized in that, The remote-controlled vehicle is also equipped with an electric heating box and a camera for observing the inside of the pipe.

3. The underground pipeline repair device according to claim 1, characterized in that, The output mechanism includes an on / off valve installed on the remote control vehicle. The input end of the on / off valve is connected to the interior of the liquid storage tank, and the output end of the on / off valve is connected to the infusion pipe. One end of the infusion pipe is equipped with a flow guide.

4. The underground pipeline repair device according to claim 1, characterized in that, An electric push rod connected to the bottom of the remote-controlled vehicle is installed on the top of the fixed frame, and the main leveling roller is located inside the fixed frame.

5. The underground pipeline repair device according to claim 1, characterized in that, The drive assembly includes a rotating rod mounted on a fixed frame. Two limiting plates are mounted on the outer circumferential surface of the rotating rod. A worm gear is mounted on the end of the rotating rod near the fixed frame. A worm gear meshing with the worm gear is mounted on the fixed frame. A synchronous pulley is mounted on the end of the worm gear away from the worm gear.

6. The underground pipeline repair device according to claim 1, characterized in that, The power assembly includes a fixed motor mounted on a fixed frame, the output end of which is connected to one of the synchronous pulleys, and the two synchronous pulleys are connected by a synchronous belt.

7. The underground pipeline repair device according to claim 1, characterized in that, The leveling mechanism further includes a tensioning assembly, which includes two guide plates mounted on a fixed frame and a sliding plate that slides with the two guide plates. The end of the sliding plate is equipped with a lead screw that is rotatably connected to the fixed frame, and the end of the sliding plate away from the lead screw is equipped with a tensioning wheel that engages with a synchronous belt.

8. The underground pipeline repair device according to claim 7, characterized in that, Both guide plates are provided with sliding grooves, and two guide blocks are installed on the sliding plates, each located in a sliding groove.

9. The underground pipeline repair device according to claim 7, characterized in that, A limiting sleeve is installed at the end of the lead screw away from the sliding plate, and a limiting plate is installed on the limiting sleeve and engaged with it. The limiting plate and the fixing frame are slidably connected. When the limiting plate is moved upward, it is disengaged from the limiting sleeve, and the lead screw can rotate freely. If the limiting plate engages with the limiting sleeve on the lead screw, the lead screw cannot rotate freely.

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