Maintenance device for drainage pipeline
By designing an automatic clamping and propulsion mechanism for drainage pipe maintenance, the problems of existing devices requiring manual operation and being prone to pipe damage have been solved, achieving efficient and stable pipe cleaning results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI PENGDE ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-05
AI Technical Summary
The existing drainage pipe maintenance device lacks fixed support components, which means that the device must be stabilized by manpower when in use, increasing labor intensity and easily damaging the inner wall of the pipe. In addition, the lack of an automatic propulsion mechanism affects work efficiency and pipe life.
A device comprising a housing, mounting base, screw, lifting rod, clamping block, drive ring, and bevel gear was designed. It achieves automatic clamping, fixing, and propulsion through motor drive. Combined with the rotation and adjustment of the cleaning brush, it reduces the burden of manual labor and avoids collision between the device and the inner wall of the pipe.
It achieves stable fixation and automatic propulsion of the device inside the drainage pipeline, reducing labor intensity, improving work efficiency, protecting the inner wall of the pipeline, and extending its service life.
Smart Images

Figure CN224200019U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drainage pipe maintenance technology, and more specifically, to a drainage pipe maintenance device. Background Technology
[0002] Urban drainage pipes are an important infrastructure for transporting water, discharging wastewater and rainwater. They require regular cleaning and maintenance using maintenance devices; otherwise, blockages can easily occur, preventing sewage from being transported in a timely manner and causing foul odors.
[0003] A drainage pipe maintenance device is disclosed in patent document CN218168084U. The device includes a hand sleeve, a connecting arm, an adjusting mechanism, a buffering mechanism, and a cleaning mechanism. The connecting arm is sleeved on the hand sleeve, the adjusting mechanism is disposed on the connecting arm, the buffering mechanism is disposed on the adjusting mechanism, and the cleaning mechanism is disposed on the buffering mechanism. One end of the connecting arm is provided with a rotating part, which allows the connecting arm to rotate around the central axis of the hand sleeve.
[0004] However, the device lacks a support component to fix it to the drainage pipe, meaning the entire device must be stabilized manually. Operators must hold the hand-held sleeve with one hand and rotate the rotating part with the other to maintain the inside of the drainage pipe. This not only increases the labor intensity of the workers and leads to low work efficiency, but also easily causes muscle fatigue in narrow pipe spaces or during prolonged operation, and may even affect the cleaning effect due to unstable grip. Secondly, the device lacks an automatic propulsion mechanism; workers must rely entirely on manual operation to complete the entire maintenance process. During propulsion, if the worker's arm is unstable, the entire device is prone to bumping against the inner wall of the drainage pipe, easily damaging the anti-corrosion layer and shortening the pipe's service life. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] In view of the problems existing in the prior art, the present invention provides a maintenance device for drainage pipes to solve the technical problem mentioned in the background art that the device does not have a support component fixed to the drainage pipe during use, so that the entire device must rely entirely on manual labor to stabilize the equipment, which increases the labor intensity of the operators.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution: a maintenance device for drainage pipes, comprising a housing, a mounting base fixedly mounted on the housing, multiple fixed shells fixedly mounted on the outer side of the mounting base, a screw rotatably mounted inside the fixed shell, a lifting rod threadedly connected to the screw, a clamping block fixedly mounted at one end of the lifting rod, a drive chamber provided inside the mounting base, a drive ring rotatably mounted inside the drive chamber, a conical toothed ring fixedly mounted at one end of the drive ring, a conical gear fixedly mounted at the lower end of each screw extending into the drive chamber, the conical gear meshing with the conical toothed ring, a drive toothed ring fixedly mounted at one end of the drive ring passing through the mounting base, a first motor fixedly mounted on the housing, a drive gear fixedly mounted at the drive end of the first motor, the drive gear meshing with the drive toothed ring, a push rod movably mounted inside the housing, a rotating assembly provided at one end of the push rod, and multiple cleaning brushes movably mounted on the push rod through the rotating assembly.
[0009] The present invention is further configured such that a lead screw is rotatably provided inside the housing, and the lead screw is threadedly connected to the push rod to facilitate the movement of the push rod.
[0010] The present invention is further configured such that a second motor is fixedly provided at one end of the housing, and the driving end of the second motor extends into the housing and is fixedly connected to the lead screw to facilitate the rotation of the lead screw.
[0011] The present invention is further configured such that two limiting blocks are fixedly provided on the push rod, and two limiting grooves that cooperate with the limiting blocks are provided inside the housing, so as to facilitate the limiting of the push rod.
[0012] The present invention is further configured such that the rotating component includes a drive box, the drive box is fixedly connected to one end of the push rod, a third motor is fixedly installed inside the drive box, and a turntable is fixedly installed through the drive end of the third motor passing through the drive box. The turntable and the drive box are rotatably connected by bearings to facilitate the rotation of the turntable.
[0013] The present invention is further configured such that a plurality of adjusting shells are fixedly provided on the turntable, and adjusting plates are movably provided inside the adjusting shells to facilitate the movement of the adjusting plates.
[0014] The present invention is further provided that a spring is fixedly connected between the adjusting plate and the adjusting shell to facilitate pushing the adjusting plate.
[0015] The present invention is further configured such that an adjustment rod is fixedly provided at the other end of the adjustment plate, and one end of the adjustment rod passes through the adjustment shell and is fixedly connected to the cleaning brush by bolts, so as to facilitate the movement of the cleaning brush.
[0016] (III) Beneficial Effects
[0017] Compared with the prior art, the present invention provides a maintenance device for drainage pipes, which has the following beneficial effects:
[0018] 1. Through the cooperation of the housing, mounting base, fixed housing, screw, lifting rod, clamping block, drive chamber, drive ring, conical toothed ring, conical gear, drive toothed ring, first motor and drive gear, the entire device can be clamped and fixed to the drainage pipe, thereby avoiding the need for workers to hold the support by hand, reducing the labor burden of workers, improving work efficiency, and improving the stability of the support.
[0019] 2. Through the cooperation of the push rod, cleaning brush, lead screw, second motor, limit block and limit groove, the cleaning brush can be automatically pushed forward, thus ensuring the stability of the pushing trajectory. This avoids the phenomenon that the components of the device will collide with the inner wall of the drainage pipe due to unstable manual control during the pushing process, thereby causing damage to the anti-corrosion layer of the inner wall of the pipe and extending the service life of the pipe.
[0020] 3. Through the cooperation of the drive box, third motor, turntable, adjusting shell, adjusting plate, spring, and adjusting rod, the cleaning brush can rotate automatically during movement, thereby cleaning and maintaining the inside of the drainage pipe. At the same time, the spring is set in the adjusting shell, which can prevent the spring from being contaminated or corroded by the cleaned substances in the drainage pipe or causing jamming during the cleaning and maintenance process. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of a maintenance device for a drainage pipe according to the present invention.
[0022] Figure 2 for Figure 1 A magnified view of part A in the diagram;
[0023] Figure 3 This is a cross-sectional schematic diagram of the mounting base and its connecting components when the clamping block is in a moving state.
[0024] Figure 4 This is a schematic cross-sectional view of the housing and its connecting components when the push rod is in a moving state.
[0025] Figure 5 This is a cross-sectional schematic diagram of the drive box and its connecting components when the turntable is rotating.
[0026] In the diagram: 1. Housing; 2. Mounting base; 3. Fixed housing; 4. Screw; 5. Lifting rod; 6. Clamping block; 7. Drive chamber; 8. Drive ring; 9. Conical gear ring; 10. Conical gear; 11. Drive gear ring; 12. First motor; 13. Drive gear; 14. Push rod; 15. Cleaning brush; 16. Lead screw; 17. Second motor; 18. Limiting block; 19. Limiting groove; 20. Drive box; 21. Third motor; 22. Turntable; 23. Adjusting housing; 24. Adjusting plate; 25. Spring; 26. Adjusting rod. Detailed Implementation
[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.
[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.
[0030] Please see Figures 1-5 A maintenance device for drainage pipes includes a housing 1, a mounting base 2 fixedly mounted on the housing 1, multiple fixed shells 3 fixedly mounted on the outer side of the mounting base 2, a screw 4 rotatably mounted inside the fixed shell 3, a lifting rod 5 threadedly connected to the screw 4, a clamping block 6 fixedly mounted at one end of the lifting rod 5, a drive chamber 7 inside the mounting base 2, a drive ring 8 rotatably mounted inside the drive chamber 7, a conical toothed ring 9 fixedly mounted at one end of the drive ring 8, a conical gear 10 fixedly mounted at the lower end of each screw 4 extending into the drive chamber 7, the conical gear 10 meshing with the conical toothed ring 9, a drive toothed ring 11 fixedly mounted at one end of the drive ring 8 passing through the mounting base 2, a first motor 12 fixedly mounted on the housing 1, a drive gear 13 fixedly mounted at the drive end of the first motor 12, the drive gear 13 meshing with the drive toothed ring 11.
[0031] In this embodiment, when it is necessary to fix the entire device to the drain pipe, the entire device is moved, the end with the cleaning brush 15 is inserted into one end of the drain pipe, and the multiple clamping blocks 6 are moved to the outside of one end of the pipe. The first motor 12 is started, and the first motor 12 drives the drive gear 13 to rotate. Since the drive gear 13 is meshed with the drive gear ring 11, the drive gear ring 11 drives the drive ring 8 to rotate. The drive ring 8 drives the conical gear ring 9 to rotate. Since the conical gear ring 9 is meshed with the multiple conical gears 10, the conical gears 10 rotate. The conical gears 10 drive the screw 4 to rotate. Since the screw 4 is threadedly connected to the lifting rod 5, the lifting rod 5 moves. The lifting rod 5 drives the clamping blocks 6 to move. With the cooperation of the multiple clamping blocks 6, the entire device is clamped and fixed to one end of the drain pipe.
[0032] Please see Figures 1-5 As one method for cleaning and maintaining drainage pipes: a push rod 14 is movably installed inside the housing 1. A rotating assembly is provided at one end of the push rod 14. Multiple cleaning brushes 15 are movably mounted on the push rod 14 via the rotating assembly. A lead screw 16 is rotatably installed inside the housing 1 and threadedly connected to the push rod 14. A second motor 17 is fixedly installed at one end of the housing 1. The drive end of the second motor 17 extends into the housing 1 and is fixedly connected to the lead screw 16. Two limiting blocks 18 are fixedly installed on the push rod 14. Two limiting grooves 19 that mate with the limiting blocks 18 are provided inside the housing 1. The rotating assembly... The device includes a drive box 20, which is fixedly connected to one end of a push rod 14. A third motor 21 is fixedly installed inside the drive box 20. A turntable 22 is fixedly installed through the drive end of the third motor 21 and passes through the drive box 20. The turntable 22 is rotatably connected to the drive box 20 via bearings. Multiple adjusting shells 23 are fixedly installed on the turntable 22. Adjusting plates 24 are movably installed inside the adjusting shells 23. A spring 25 is fixedly connected between the adjusting plates 24 and the adjusting shells 23. An adjusting rod 26 is fixedly installed at the other end of the adjusting plates 24. One end of the adjusting rod 26 passes through the adjusting shells 23 and is fixedly connected to a cleaning brush 15 via bolts.
[0033] More specifically, when maintenance is required inside the drainage pipe, the second motor 17 is started, which drives the lead screw 16 to rotate. Since the lead screw 16 is threadedly connected to the push rod 14, the push rod 14 moves. The push rod 14 drives the limit block 18 to move along the limit groove 19 to limit the push rod 14. The push rod 14 drives multiple cleaning brushes 15 to move through the adjustment component, so that the cleaning brushes 15 extend into the drainage pipe. At the same time, the third motor 21 is started, which drives the turntable 22 to rotate. The turntable 22 drives the adjustment shell 23, adjustment plate 24, adjustment rod 26 and cleaning brushes 15 to rotate, thereby cleaning and maintaining the inside of the drainage pipe. At the same time, the cleaning brushes 15 will automatically adjust according to the diameter of the pipe, so that the cleaning brushes 15 contact the inside of the pipe. The cleaning brushes 15 drive the adjustment rod 26 and adjustment plate 24 to move, and the spring 25 undergoes elastic deformation. Since the spring 25 is set inside the adjustment shell 23, it will not be contaminated or corroded by the substances cleaned from the drainage pipe or cause jamming during use.
[0034] In summary, when using or operating the entire device: When it is necessary to fix the entire device to the drainage pipe, move the entire device, insert the end with the cleaning brush 15 into one end of the drainage pipe, and move the multiple clamping blocks 6 to the outside of one end of the pipe. Start the first motor 12, which drives the drive gear 13 to rotate. Since the drive gear 13 is meshed with the drive gear ring 11, the drive gear ring 11 drives the drive ring 8 to rotate. The drive ring 8 drives the conical gear ring 9 to rotate. Since the conical gear ring 9 is meshed with multiple conical gears 10, the conical gears 10 rotate. The conical gears 10 drive the screw 4 to rotate. Since the screw 4 is threadedly connected to the lifting rod 5, the lifting rod 5 moves, and the lifting rod 5 drives the clamping blocks 6 to move. With the cooperation of the multiple clamping blocks 6, the entire device is clamped and fixed to one end of the drainage pipe.
[0035] When maintenance of the drainage pipe is required, the second motor 17 is started, which drives the lead screw 16 to rotate. Since the lead screw 16 is threadedly connected to the push rod 14, the push rod 14 moves. The push rod 14 drives the limit block 18 to move along the limit groove 19 to limit the push rod 14. The push rod 14 drives multiple cleaning brushes 15 to move through the adjustment component, so that the cleaning brushes 15 extend into the drainage pipe. At the same time, the third motor 21 is started, which drives the turntable 22 to rotate. The turntable 22 drives the adjustment shell 23, adjustment plate 24, adjustment rod 26 and cleaning brushes 15 to rotate, thereby cleaning and maintaining the inside of the drainage pipe. At the same time, the cleaning brushes 15 will automatically adjust according to the diameter of the pipe, so that the cleaning brushes 15 contact the inside of the pipe. The cleaning brushes 15 drive the adjustment rod 26 and adjustment plate 24 to move, and the spring 25 undergoes elastic deformation. Since the spring 25 is set inside the adjustment shell 23, it will not be contaminated or corroded by the substances cleaned from the drainage pipe during use, or cause problems such as jamming.
[0036] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, their electrical connections and specific circuit structures will not be elaborated here.
[0037] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.
Claims
1. A maintenance device for a drainage pipe, comprising a housing (1), characterized in that: A mounting base (2) is fixedly provided on the housing (1). Multiple fixing shells (3) are fixedly provided on the outside of the mounting base (2). A screw (4) is rotatably provided inside the fixing shell (3). A lifting rod (5) is threadedly connected to the screw (4). A clamping block (6) is fixedly provided at one end of the lifting rod (5). A drive chamber (7) is provided inside the mounting base (2). A drive ring (8) is rotatably provided inside the drive chamber (7). A conical gear ring (9) is fixedly provided at one end of the drive ring (8). The lower end of each screw (4) extends into the drive chamber (7) and is fixedly provided with a conical gear (10). The bevel gear (10) meshes with the bevel gear ring (9). One end of the drive ring (8) passes through the mounting base (2) and is fixedly provided with the drive gear ring (11). The housing (1) is fixedly provided with the first motor (12). The drive end of the first motor (12) is fixedly provided with the drive gear (13). The drive gear (13) meshes with the drive gear ring (11). The housing (1) is movably provided with the push rod (14). One end of the push rod (14) is provided with a rotating component. The push rod (14) is movably provided with multiple cleaning brushes (15) through the rotating component.
2. The maintenance device for a drainage pipe according to claim 1, characterized in that: The housing (1) is rotatably provided with a lead screw (16), which is threadedly connected to the push rod (14).
3. A maintenance device for a drainage pipe according to claim 2, characterized in that: A second motor (17) is fixedly provided at one end of the housing (1), and the driving end of the second motor (17) extends into the housing (1) and is fixedly connected to the lead screw (16).
4. A maintenance device for a drainage pipe according to claim 3, characterized in that: Two limiting blocks (18) are fixedly provided on the push rod (14), and two limiting grooves (19) that cooperate with the limiting blocks (18) are provided inside the housing (1).
5. A maintenance device for a drainage pipe according to claim 1, characterized in that: The rotating assembly includes a drive box (20), which is fixedly connected to one end of the push rod (14). A third motor (21) is fixedly installed inside the drive box (20). The drive end of the third motor (21) passes through the drive box (20) and is fixedly provided with a turntable (22). The turntable (22) is rotatably connected to the drive box (20) through a bearing.
6. A maintenance device for a drainage pipe according to claim 5, characterized in that: Multiple adjusting shells (23) are fixedly provided on the turntable (22), and adjusting plates (24) are movably provided inside the adjusting shells (23).
7. A maintenance device for a drainage pipe according to claim 6, characterized in that: A spring (25) is fixedly connected between the adjusting plate (24) and the adjusting shell (23).
8. A maintenance device for a drainage pipe according to claim 7, characterized in that: An adjustment rod (26) is fixedly provided at the other end of the adjustment plate (24). One end of the adjustment rod (26) passes through the adjustment shell (23) and is fixedly connected to the cleaning brush (15) by bolts.
Citation Information
Patent Citations
Drainage pipeline maintenance device
CN218168084U