Constructional engineering pipeline inner wall decontamination device

Abstract

The utility model relates to a building engineering pipeline inner wall sewage disposal device which comprises a base, the base is located in a pipeline body, a plurality of air cylinders are arranged outside the base, walking wheels are arranged at the ends of the air cylinders, and the walking wheels abut against the inner wall of the pipeline body. A motor is arranged in the base, the output end of the motor is connected with a mounting frame, a telescopic adjusting structure is arranged outside the mounting frame, and the end of the telescopic adjusting structure is connected with a telescopic frame. The pipeline cleaning device has the advantages that the cleaning device completes cleaning work of the whole pipeline at a time, the extension amount of the brush rods is adjusted to adapt to cleaning work of the interiors of pipelines with different diameters, the brush rods rotate around the axis of the pipeline, the brush rods rotate around the axis of the pipeline, and therefore the cleaning work of the whole pipeline is completed at a time. The cleaning efficiency is improved, meanwhile, the cleaning effect on the inner wall of the pipeline is improved, the manual task load is reduced, and the cleaning cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline cleaning in construction engineering, in particular to a device for cleaning dirt on the inner wall of a pipeline in construction engineering. Background Technique

[0002] In construction engineering, the pipeline system is also an important part of construction engineering. Pipelines are the most common fluid transportation paths in modern industry and play an irreplaceable role in construction engineering such as water supply and drainage, heating and gas supply. During the long-term use of pipelines, some substances deposit in the pipelines due to gravity settlement, adhesion, interception, etc., and form sludge adhering to the inner wall. If not cleaned regularly, it will affect the conveying pressure and conveying flow. Traditional pipeline dirt cleaning devices are large in size and heavy in weight, and are usually connected to external pipeline equipment for use. This causes the cleaning work to be segmented according to the travel of the cleaning equipment, increasing the cleaning workload, the technical difficulty of the cleaning work, and the cleaning time, and reducing the cleaning efficiency.

[0003] The utility model patent with the authorization announcement number of CN220497217U, "A device for cleaning the inner wall of a pipeline in construction engineering", discloses that the front push plate and the rear push plate at the front of the machine body can be used to push the sludge, and the outer ends of the rear push plate and the front push plate are just in contact with the inner wall of the pipeline, which is convenient for pushing the sludge scraped by the equipment forward. Driven by the rotation of the rotating shaft, the cleaning structure will continuously rotate to brush the remaining stains on the inner wall of the pipeline, which helps to clean the silt more thoroughly. Driven by the rotation of the rotating shaft, the scraping surface structure will rotate and scrape the sludge and other adherences on the inner wall of the pipeline through the scraper, which helps to remove the stains that are difficult to clean and is more convenient and labor-saving. However, in the process of using the above scheme, both the cleaning brush structure and the scraping surface structure are set as circular fixed structures, and the dirt on the inner wall of the pipeline is cleaned by rotation. When cleaning pipelines with different pipe diameters, it is necessary to replace different models of dirt cleaning devices, which increases the manual workload, reduces the dirt cleaning efficiency, reduces the applicable range of the dirt cleaning device, and thus reduces the practicability of the dirt cleaning device. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a device for cleaning the inner wall of a pipeline in construction engineering. The length is adjusted by driving the walking wheels through a cylinder, and each walking wheel is equipped with a driving motor, so that the walking wheels can walk on the inner wall of the pipeline. Through the setting of the screw rod and the sleeve, the use length of the telescopic frame can be adjusted. After the telescopic frame is adjusted, it will drive the brush rod to move synchronously, so that the brush rod always fits the inner wall of the pipeline, adapting to pipelines with different inner diameters, having a wide application range, and improving the practicability of the dirt cleaning device. Through the setting of the torsion spring and the pull rope, the brush rod can be driven to rotate reciprocally. The brush rod can rotate around the pipeline while rotating itself, improving the cleaning efficiency, reducing the cleaning time, and improving the cleaning effect on the inner wall of the pipeline.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A device for cleaning the inner wall of a pipeline in a construction project, including a base located inside the pipeline body. A number of cylinders are equiangularly arranged outside the base, and walking wheels are arranged at the ends of the cylinders, and the walking wheels are in contact with the inner wall of the pipeline body; a motor is arranged inside the base, the output end of the motor is connected to a mounting frame, a telescopic adjustment structure is arranged outside the mounting frame, and the telescopic adjustment structure is slidably connected to a telescopic frame; a number of brush rods are evenly arranged on the telescopic frame, bristles are arranged on the brush rods, and the bristles are in contact with the inner wall of the pipeline body.

[0007] Preferably, the device for cleaning the inner wall of a pipeline in a construction project further includes a torsion spring, a pull rope, a magnetic block and an electromagnet. The torsion spring is arranged at the connection position of the telescopic frame and the brush rod, the pull rope is wound on the brush rod, one end of the pull rope is connected to the magnetic block, the magnetic block slides in the inner groove in the vertical direction of the telescopic frame, and an electromagnet is arranged in the groove.

[0008] Preferably, the electromagnet is powered by a storage battery, and the storage battery is arranged inside the mounting frame.

[0009] Preferably, the telescopic adjustment structure includes a rotating rod, a toothed disc, a gear, a screw rod and a sleeve. The rotating rod is arranged at the rotation center of the mounting frame, a toothed disc is arranged at the end of the rotating rod, a number of gears are meshed and arranged equiangularly with the toothed disc, a screw rod is arranged at the center of the gear, the other end of the screw rod penetrates through the center of the sleeve, the top of the screw rod is threadedly connected to the telescopic frame, the telescopic frame is slidably connected to the sleeve, and the sleeve is equiangularly arranged on the outer circumference of the mounting frame. The telescopic frame forms a telescopic sliding structure through the screw rod and the sleeve.

[0010] Preferably, the end of the telescopic frame is set as an arc structure.

[0011] Preferably, a scraper is arranged at the front end of the telescopic frame in the working direction of the brush rod.

[0012] Preferably, a driving motor is arranged on the walking wheel.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The driving motor drives the walking wheels to walk along the pipe wall. The walking wheels automatically drive the cleaning device to walk in the pipeline with sludge, and automatically clean the sludge in the whole pipeline. There is no need for external equipment and manual control. The cleaning device completes the cleaning work of the whole pipeline at one time, with high work efficiency, reduced manual workload, reduced cleaning cost, no need to disassemble the pipeline in sections, good integrity of the pipeline, and improved functionality of the pipeline.

[0015] 2. The telescopic adjustment mechanism adjusts the length of the telescopic frame, and adjusts the elongation of the brush rod to adapt to the cleaning work inside pipes with different diameters. The bristles can always abut against the inner walls of different pipes for cleaning. A scraper is provided on the telescopic frame. Before the bristles clean, the stubborn sludge on the inner wall of the pipe is first cleaned off by the bristles, and then the bristles are used for cleaning, making the cleaning faster, with higher cleaning efficiency and better cleaning effect.

[0016] 3. Through the setting of the torsion spring and the pull rope, the brush rod can be driven to rotate reciprocally. Compared with single-rotation cleaning, the brush rod can revolve around the pipe axis while rotating around the center of the brush rod. Under the combination of the two rotations, the bristles clean the inside of the pipe, improving the cleaning efficiency and at the same time enhancing the cleaning effect on the inner wall of the pipe. Description of the Drawings

[0017] Figure 1 It is a front-sectional structure schematic diagram of a device for cleaning the inner wall of a building engineering pipe described in the present utility model;

[0018] Figure 2 It is a side-view structure schematic diagram of the base and the walking wheels described in the present utility model;

[0019] Figure 3 It is a side-sectional structure schematic diagram of the inside of the mounting bracket described in the present utility model;

[0020] Figure 4 It is a side-sectional structure schematic diagram of the connection between the sleeve and the telescopic frame described in the present utility model;

[0021] Figure 5 It is a partial enlarged (A) structure schematic diagram of the inside structure of the mounting bracket described in the present utility model;

[0022] Figure 6 It is a partial enlarged (B) structure schematic diagram of the connection structure of the sleeve, the telescopic frame and the brush rod described in the present utility model;

[0023] Figure 7 It is a partial enlarged (C) structure schematic diagram of the brush rod described in the present utility model.

[0024] In the figure: 1. Pipe body; 2. Base; 3. Mounting bracket; 4. Cylinder; 5. Walking wheels; 6. Motor; 7. Rotating rod; 8. Tooth disc; 9. Gear; 10. Screw rod; 11. Sleeve; 12. Telescopic frame; 13. Scraper; 14. Brush rod; 15. Torsion spring; 16. Pull rope; 17. Magnetic block; 18. Electromagnet; 19. Storage battery. Detailed Embodiment

[0025] The following further describes the detailed embodiment of the present utility model:

[0026] As Figures 1-7As shown in the figure, the working principle of a sewage cleaning device for the inner wall of a building engineering pipeline: The traveling wheels 5 are in contact with the inner wall of the pipeline body 1 and move along it. The motor 6 in the base 2 is connected to the mounting frame 3. The telescopic adjustment structure arranged on the outer side of the mounting frame 3 adjusts the length of the telescopic frame 12, and presses the scraper 13 and the brush rod 14 at the top of the telescopic frame 12 against the inner wall of the pipeline body 1. The scraper 13 scrapes off the sludge on the inner wall of the pipeline body 1, and the bristles on the brush rod 14 clean the inner wall of the pipeline body 1. The brush rod 14 revolves around the axis of the pipeline body 1 through the telescopic frame 12, and rotates around the center of the bristles by using the torsion spring 15 and the pull rope 16. The bristles revolve and rotate at the same time, improving the cleaning effect on the inner wall of the pipeline body 1. The sewage cleaning device efficiently completes the sewage cleaning work of the entire pipeline body 1, with high work efficiency and low sewage cleaning cost.

[0027] Embodiment 1: As Figures 1-7 shown in the figure, a sewage cleaning device for the inner wall of a building engineering pipeline includes a base 2. The base 2 is located inside the pipeline body 1. Three cylinders 4 are equiangularly installed on the outside of the base 2. The end of the cylinder 4 is installed with a traveling wheel 5. At the same time, the traveling wheel 5 is in contact with the inner wall of the pipeline body 1. The cylinder 4 on the base 2 drives the traveling wheel 5 to adjust the length. Each traveling wheel 5 is equipped with a driving motor; a motor 6 is installed inside the base 2. The output end of the motor 6 is connected to a mounting frame 3. The mounting frame 3 is located outside the base 2. A telescopic adjustment mechanism is arranged on the outside of the mounting frame 3. At the same time, the telescopic adjustment mechanism drives the brush rod 14 to adjust the extension length through the telescopic frame 12. When in use, the sewage cleaning device is placed inside the pipeline body 1 to be processed. The cylinder 4 outside the base 2 can drive the traveling wheel 5 to expand, and then be in contact with the inner wall of the pipeline body 1. The telescopic frame 12 slides out from the sleeve 11 on the outside of the mounting frame 3, so that the brush rod 14 contacts the inner wall of the pipeline body 1. Then, after starting the motor 6 in the base 2, it will drive the mounting frame 3 and the telescopic frame 12 to rotate. After the driving motor drives the traveling wheel 5 to run, the whole sewage cleaning device will move inside the pipeline body 1;

[0028] The telescopic frame 12 is slidably connected to the sleeve 11. Three sleeves 11 are installed on the outer side of the mounting frame 3 at equal angles. The sleeve 11 is sleeved with the telescopic frame 12. A brush rod 14 is arranged at the top of the telescopic frame 12. The bristles of the brush rod 14 are in contact with the inner wall of the pipe body 1. The telescopic adjustment mechanism is provided with a rotating rod 7. The rotating rod 7 is arranged through the center of rotation of the mounting frame 3. A toothed disc 8 is fixed at the end of the rotating rod 7. And the toothed disc 8 is arranged inside the mounting frame 3. Three gears 9 are meshed and connected to one side of the toothed disc 8 at equal angles. The gears 9 are arranged in the inner hollow circumference of the mounting frame at equal angles. A screw rod 10 is integrally installed in the middle of each gear 9. The screw rod 10 is arranged through the middle part of the inner side of the sleeve 11. The outer side of the screw rod 10 is threadedly connected to the end of the vertically telescopic part of the telescopic frame 12. The telescopic frame 12 forms a telescopic sliding structure through the screw rod 10 and the sleeve 11. The end of the side of the telescopic frame 12 connected to the brush rod 14 is set as an arc structure. The arc structure fits the inner wall of the pipe wall, and the cleaning ability is stronger. When dealing with pipe bodies 1 with different inner diameters, it is necessary to adjust the extension length of the telescopic frame 12. At this time, rotate the rotating rod 7 on the mounting frame 3. After the rotating rod 7 rotates, it will drive the toothed disc 8 to rotate synchronously. After the toothed disc 8 rotates, it will drive the gears 9 to rotate synchronously. After the gears 9 rotate, they will drive the screw rod 10 to rotate synchronously. After the screw rod 10 rotates, the threaded connection length between the screw rod 10 and the vertically telescopic part of the telescopic frame 12 changes. As a result, it drives the vertically telescopic part of the telescopic frame 12 to slide in the sleeve 11, so that the telescopic frame 12 drives the bristles on the brush rod 14 to always fit the inner wall of the pipe body 1.

[0029] Embodiment 2: As Figures 1-7 shown, in order to further thoroughly remove the dirt on the inner wall of the pipe, a device for cleaning the inner wall of a building engineering pipe includes a base 2. The base 2 is located inside the pipe body 1. Three cylinders 4 are installed on the outside of the base 2 at equal angles. A traveling wheel 5 is installed at the end of the cylinder 4. At the same time, the traveling wheel 5 is in contact with the inner wall of the pipe body 1. The cylinder 4 on the base 2 drives the traveling wheel 5 to adjust the length. Each traveling wheel 5 is equipped with a driving motor; An electric motor 6 is installed inside the base 2. The output end of the electric motor 6 is connected to a mounting frame 3. The mounting frame 3 is located outside the base 2. A telescopic adjustment mechanism is arranged on the outside of the mounting frame 3. At the same time, the telescopic adjustment mechanism drives the brush rod 14 to adjust the extension length through the telescopic frame 12. When in use, place the cleaning device inside the pipe body 1 to be processed. The cylinder 4 outside the base 2 can drive the traveling wheel 5 to expand, and then contact with the inner wall of the pipe body 1. The telescopic frame 12 slides out from the sleeve 11 outside the mounting frame 3, so that the brush rod 14 contacts the inner wall of the pipe body 1. Then, after starting the electric motor 6 in the base 2, it will drive the mounting frame 3 and the telescopic frame 12 to rotate. After the driving motor drives the traveling wheel 5 to run, the whole cleaning device will move inside the pipe body 1;

[0030] The telescopic frame 12 is slidably connected to the sleeve 11. The three sleeves 11 are installed on the outer side of the mounting frame 3 at equal angles. The sleeve 11 is sleeved with the telescopic frame 12. A brush rod 14 is arranged at the top of the telescopic frame 12. The bristles of the brush rod 14 are in contact with the inner wall of the pipe body 1. The telescopic adjustment mechanism is provided with a rotating rod 7. The rotating rod 7 is arranged through the rotation center of the mounting frame 3. A toothed disc 8 is fixed at the end of the rotating rod 7. And the toothed disc 8 is arranged inside the mounting frame 3. Three gears 9 are meshed and connected to one side of the toothed disc 8 at equal angles. The gears 9 are arranged on the inner hollow circumference of the mounting frame at equal angles. A screw rod 10 is integrally installed in the middle of each gear 9. The screw rod 10 is arranged through the middle part of the inner side of the sleeve 11. The outer side of the screw rod 10 is threadedly connected to the end of the telescopic part of the telescopic frame 12 in the vertical direction. The telescopic frame 12 forms a telescopic sliding structure through the screw rod 10 and the sleeve 11. The end of the side of the telescopic frame 12 connected to the brush rod 14 is set as an arc structure. The arc structure fits the inner wall of the pipe wall, and the cleaning ability is stronger. When dealing with pipe bodies 1 of different inner diameters, it is necessary to adjust the extension length of the telescopic frame 12. At this time, rotate the rotating rod 7 on the mounting frame 3. After the rotating rod 7 rotates, it will drive the toothed disc 8 to rotate synchronously. After the toothed disc 8 rotates, it will drive the gears 9 to rotate synchronously. After the gears 9 rotate, they will drive the screw rod 10 to rotate synchronously. After the screw rod 10 rotates, the threaded connection length between the screw rod 10 and the telescopic part of the telescopic frame 12 in the vertical direction changes, thereby causing the telescopic part of the telescopic frame 12 in the vertical direction to slide in the sleeve 11, so that the telescopic frame 12 drives the bristles on the brush rod 14 to always fit the inner wall of the pipe body 1.

[0031] A scraper 13 is fixed on the outer side of the end of the side of the telescopic frame 12 connected to the brush rod 14. At the same time, the scraper 13 is in contact with the inner wall of the pipe body 1. When the telescopic frame 12 rotates, it will drive the scraper 13 to rotate synchronously, and the scraper 13 will scrape off the dirt on the inner wall of the pipe body 1.

[0032] Example 3: As Figures 1-7As shown in the figure, in order to further improve the cleaning efficiency of the pipe inner wall cleaning device for the inner wall of the pipe, a pipe inner wall cleaning device for a construction project includes a base 2. The base 2 is located inside the pipe body 1. Three cylinders 4 are equiangularly installed on the outside of the base 2. A walking wheel 5 is installed at the end of the cylinder 4. At the same time, the walking wheel 5 abuts against the inner wall of the pipe body 1. The cylinder 4 on the base 2 drives the walking wheel 5 to adjust the length. Each walking wheel 5 is equipped with a driving motor; a motor 6 is installed inside the base 2. The output end of the motor 6 is connected to a mounting bracket 3. The mounting bracket 3 is located outside the base 2. A telescopic adjustment mechanism is provided on the outside of the mounting bracket 3. At the same time, the telescopic adjustment mechanism drives the brush rod 14 to adjust the extension length through the telescopic frame 12. When in use, the cleaning device is placed inside the pipe body 1 to be processed. The cylinder 4 outside the base 2 can drive the walking wheel 5 to expand, and then abut against the inner wall of the pipe body 1. The telescopic frame 12 slides out from the sleeve 11 outside the mounting bracket 3, so that the brush rod 14 contacts the inner wall of the pipe body 1. Then, after starting the motor 6 in the base 2, it will drive the mounting bracket 3 and the telescopic frame 12 to rotate. After the driving motor drives the walking wheel 5 to run, the whole cleaning device will move inside the pipe body 1;

[0033] The telescopic frame 12 is slidably connected to the sleeve 11. Three sleeves 11 are equiangularly installed on the outside of the mounting bracket 3. The sleeve 11 is sleeved with the telescopic frame 12. A brush rod 14 is provided at the top of the telescopic frame 12. The bristles of the brush rod 14 abut against the inner wall of the pipe body 1. The telescopic adjustment mechanism is provided with a rotating rod 7. The rotating rod 7 is arranged through the center of rotation of the mounting bracket 3. A toothed disc 8 is fixed at the end of the rotating rod 7. Moreover, the toothed disc 8 is arranged inside the mounting bracket 3. Three gears 9 are equiangularly meshed on one side of the toothed disc 8. The gears 9 are equiangularly arranged inside the hollow circumference of the mounting bracket. A screw rod 10 is integrally installed in the middle of each gear 9. The screw rod 10 is arranged through the middle part of the inner side of the sleeve 11. The outer side of the screw rod 10 is threadedly connected to the end of the vertical telescopic part of the telescopic frame 12. The telescopic frame 12 forms a telescopic sliding structure through the screw rod 10 and the sleeve 11. The end of the side of the telescopic frame 12 connected to the brush rod 14 is set as an arc structure, and the arc structure fits the inner wall of the pipe wall, and the cleaning ability is stronger. When dealing with pipe bodies 1 with different inner diameters, it is necessary to adjust the extension length of the telescopic frame 12. At this time, rotate the rotating rod 7 on the mounting bracket 3. After the rotating rod 7 rotates, it will drive the toothed disc 8 to rotate synchronously. After the toothed disc 8 rotates, it will drive the gears 9 to rotate synchronously. After the gears 9 rotate, they will drive the screw rod 10 to rotate synchronously. After the screw rod 10 rotates, the threaded connection length between the screw rod 10 and the vertical telescopic part of the telescopic frame 12 changes, and then it causes the vertical telescopic part of the telescopic frame 12 to slide in the sleeve 11, so that the bristles on the brush rod 14 driven by the telescopic frame 12 always fit the inner wall of the pipe body 1.

[0034] On the outer side of one end of the telescopic frame 12 connected to the brush rod 14, a scraper 13 is fixed. At the same time, the scraper 13 is in close contact with the inner wall of the pipe body 1. When the telescopic frame 12 rotates, it will drive the scraper 13 to rotate synchronously, and the scraper 13 will scrape off the dirt on the inner wall of the pipe body 1.

[0035] A torsion spring 15 is installed at the hinge joint between the outer side of the telescopic frame 12 and the brush rod 14. A pull rope 16 is wound around the brush rod 14. The end of the pull rope 16 is fixedly connected to a magnetic block 17. The magnetic block 17 is slidably connected inside the groove of the telescopic part in the vertical direction of the telescopic frame 12. At the same time, an electromagnet 18 is installed inside the groove of the telescopic part in the vertical direction of the telescopic frame 12. The electromagnet 18 is powered by a storage battery 19. The storage battery 19 is installed inside the mounting frame 3. The electromagnet 18 is alternately powered on and off, driving the magnetic block 17 to slide reciprocally. The brush rod 14 forms a self-rotating cleaning structure through the torsion spring 15 and the pull rope 16. A small part of the dirt remaining on the inner wall of the pipe body 1 will be cleaned by the brush rod 14. By controlling the power supply and power-off of the storage battery 19 to the electromagnet 18, the electromagnet 18 is intermittently charged. When the electromagnet 18 is charged, it will adsorb the magnetic block 17, causing the magnetic block 17 to slide. After the magnetic block 17 slides, it will pull the pull rope 16, and the pull rope 16 will drive the brush rod 14 to rotate, thereby reversing the torsion spring 15. When the electromagnet 18 is powered off, the magnetic block 17 will not be affected by the adsorption force, and the pull rope 16 will be relaxed. At this time, the reversed torsion spring 15 will drive the brush rod 14 to rotate back, causing the brush rod 14 to rotate reciprocally, thereby improving the cleaning efficiency of the inner wall of the pipe body 1.

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A device for cleaning the inner wall of a pipeline in a construction project, comprising a base (2), the base (2) being located inside the pipeline body (1), characterized in that, A number of cylinders (4) are arranged at equal angles outside the described base (2). A walking wheel (5) is arranged at the end of the cylinder (4), and the walking wheel (5) abuts against the inner wall of the pipe body (1). A motor (6) is arranged inside the base (2), the output end of the motor (6) is connected to the mounting bracket (3), and a telescopic adjustment structure is arranged at equal angles outside the mounting bracket (3). The telescopic adjustment structure is slidably connected to the telescopic frame (12). A number of brush rods (14) are evenly arranged on the telescopic frame (12), bristles are arranged on the brush rods (14), and the bristles abut against the inner wall of the pipe body (1).

2. The inner wall cleaning device for building engineering pipelines according to claim 1, wherein The described device for cleaning the inner wall of a construction engineering pipeline further includes a torsion spring (15), a pull rope (16), a magnetic block (17) and an electromagnet (18). The torsion spring (15) is arranged at the connection position between the telescopic frame (12) and the brush rod (14). The pull rope (16) is wound around the brush rod (14), one end of the pull rope (16) is connected to the magnetic block (17), and the magnetic block (17) slides in the inner groove in the vertical direction of the telescopic frame (12). An electromagnet (18) is arranged in the groove.

3. The sewage cleaning device for the inner wall of a pipeline in a construction project according to claim 2, characterized in that, The described electromagnet (18) is powered by a storage battery (19), and the storage battery (19) is arranged inside the mounting bracket (3).

4. The inner wall cleaning device for building engineering pipelines according to claim 1, characterized in that, The described telescopic adjustment structure includes a rotating rod (7), a toothed disc (8), a gear (9), a screw rod (10) and a sleeve (11). The rotating rod (7) is arranged at the rotation center of the mounting bracket (3), a toothed disc (8) is arranged at the end of the rotating rod (7), a number of gears (9) are arranged in meshing cooperation at equal angles with the toothed disc (8). A screw rod (10) is arranged at the center of the gear (9), the screw rod (10) passes through the center of the sleeve (11), the top of the screw rod (10) is threadedly connected to the telescopic frame (12), and the telescopic frame (12) is slidably connected to the sleeve (11). The sleeves (11) are arranged at equal angles on the outer circumference of the mounting bracket (3). The telescopic frame (12) forms a telescopic sliding structure through the screw rod (10) and the sleeve (11).

5. The sewage cleaning device for the inner wall of a pipeline in a construction project according to claim 1, wherein The end of the telescopic frame (12) is set as an arc structure.

6. The inner wall cleaning device for building engineering pipelines according to claim 1, characterized in that, A scraper (13) is arranged at the front end of the telescopic frame (12) in the working direction of the brush rod.

7. The sewage cleaning device for the inner wall of a pipeline in a construction project according to claim 1, characterized in that The walking wheel (5) is provided with a driving motor.

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