A large-diameter long-distance pipeline pigging device with positioning and tracking function

Abstract

The present invention relates to the field of pipeline cleaning technology, and in particular to a large-diameter long-distance pipeline cleaning device with a positioning and tracking function, comprising a support rod, power assemblies are provided at both ends of the support rod, and the power assembly is connected to the support rod by a fixing bolt, a grinding assembly is provided at one end of the power assembly away from the support rod, a cleaning assembly is provided on the outside of the grinding assembly, and the cleaning assembly is connected to the power assembly by an assembly bolt. The large-diameter long-distance pipeline cleaning device with a positioning and tracking function designed by the present invention is provided with a drill plate and a scraping drill bit. The scraping drill bit adopts a conical structure to concentrate stress, effectively penetrate and break the hardened scaling layer, and can quickly remove stubborn deposits through the scraping action of the drill plate. At the same time, the combination of multiple grinding knife groups and grinding rods can efficiently perform grinding to ensure that the deposits are completely removed.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline cleaning, and in particular to a large-diameter long-distance pipeline cleaning device with a positioning and tracking function. Background Art

[0002] With the acceleration of industrialization, large-diameter pipelines are widely used in various industries, such as oil, natural gas, chemical industry, water supply and other fields. However, during the long-term use of these large-diameter pipelines, due to the deposition, corrosion and accumulation of impurities of the fluid, sediments or scale layers often form on the inner wall of the pipeline. Especially when the flowing medium in the pipeline is a viscous fluid, these sediments easily adhere to the inner wall of the pipeline, thereby affecting the normal circulation of the pipeline, and even causing pipeline blockage or a sharp drop in flow. In many industrial applications, the quality of the inner wall of the metal pipe plays a vital role in the safety, efficiency and life of the entire system. In the direction of liquid flow, the roughness of the inner wall, sediment accumulation and corrosion will significantly affect the flow efficiency of the fluid and increase maintenance costs.

[0003] However, when the existing large-diameter long-distance pipeline cleaning device with positioning and tracking function is in use, it mainly relies on air pressure to drive the cleaning device to move inside the pipeline, and cleans the inner wall of the pipeline through a grinding structure or a scraping structure. However, the existing pipe cleaning device lacks an effective buffer and limiting structure in structural design, and is easily affected by factors such as assembly errors and irregularities of the inner wall of the pipeline during power transmission, resulting in vibration or deflection of the pipe cleaning device during operation, which seriously affects the grinding accuracy and cleaning effect. In particular, when facing large-diameter, irregular or hard-scale deposited pipelines, the cleaning effect is not ideal, and the connections between the components of the existing large-diameter long-distance pipeline cleaning device with positioning and tracking function are not flexible enough, and the disassembly, replacement and maintenance processes are cumbersome and time-consuming, which reduces the efficiency of the equipment. In view of this, a large-diameter long-distance pipeline cleaning device with positioning and tracking function is provided to overcome the above-mentioned defects. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a large-diameter long-distance pipeline pigging device with positioning and tracking functions.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a large-diameter long-distance pipeline cleaning device with positioning and tracking function, including a support rod, both ends of the support rod are provided with power components, and the power component is connected to the support rod by fixing bolts, a grinding component is provided at the end of the power component away from the support rod, a cleaning component is provided on the outside of the grinding component, and the cleaning component is connected to the power component by assembly bolts.

[0006] As a further description of the above technical solution: the support rod includes an assembly rod arranged at one end of the power component, and transmission grooves are provided at both ends of the assembly rod, and a plurality of first docking holes are provided inside the transmission grooves. A protective plate is provided in the middle of the assembly rod, and an equipment cavity is provided inside the protective plate. An assembly ring is provided inside the equipment cavity, and a plurality of positioning mechanisms are provided on the outer side of the circumference of the assembly ring. A protective ring is provided inside the equipment cavity and on the outer side of the positioning mechanism. By providing a plurality of first docking holes, the diversity and adaptability of the component assembly are improved, and module replacement or maintenance is facilitated. At the same time, the cooperation of the protective plate and the protective ring provides mechanical protection for the support rod to prevent the internal transmission equipment from being damaged due to vibration or impact during operation. The positioning mechanism is provided for real-time positioning of the position of the pipe cleaning device when in use, thereby improving the convenience of pipe cleaning in use.

[0007] As a further description of the above technical solution: the power assembly includes a transmission motor arranged inside the transmission groove, and a plurality of docking blocks are arranged on the outside of the transmission motor, a second docking hole is opened in the middle of the docking block, and the second docking hole is connected to the first docking hole by a fixing bolt, and a mounting block is provided at one end of the transmission motor, a rotation groove is opened in the middle of the mounting block, and the rotating shaft of the transmission motor is located inside the rotation groove and is connected with a transmission block, a plurality of mounting holes are opened on one side of the mounting block, and a plurality of sleeve blocks are provided on the circumferential outer side of the transmission block, and a sleeve hole is opened in the middle of the sleeve block, which is connected to the support rod through the docking block to avoid loosening during power transmission, and the nested design of the transmission block and the sleeve block not only realizes reliable connection with the grinding assembly, but also compensates for the installation error through a small gap, thereby reducing the vibration transmitted to the grinding component.

[0008] As a further description of the above technical solution: the grinding assembly includes an assembly block arranged at one end of the mounting block, and the assembly block cooperates with the rotating groove, a transmission hole is opened in the middle of one end of the assembly block close to the mounting block, and the transmission hole cooperates with the transmission block, a splicing ring is provided in the middle of the assembly block, a plurality of splicing holes are opened at one end of the splicing ring, and the splicing holes are connected to the mounting holes by splicing bolts, and a plurality of placement holes are provided at the end of the assembly block away from the mounting block. By arranging a scraping drill bit at the front end of the drill plate, the hardened scaling layer is penetrated and crushed, and the conical structure concentrates stress to improve drilling efficiency, and by arranging a grinding cutter disc, the cutter group is installed in the rotating bottom hole through the grinding rod, and the limit plate is fixed by bolts through the top slot hole and the bottom slot hole, so that the cutter disc can be disassembled and replaced or the angle can be adjusted to adapt to deposits of different hardness and changes in pipe diameter.

[0009] As a further description of the above technical solution: the grinding assembly also includes a drill plate arranged at one end away from the mounting block, and a scraping drill bit is arranged in the middle of the end of the drill plate away from the assembly block. A plurality of fastening holes are opened on the outer side of the circumference of the scraping drill bit and located at one end of the drill plate, and the fastening holes are connected to the placement holes by fastening bolts. The grinding plate and the drill plate are connected by split fastening bolts, which can be replaced separately when damaged, and the limit plate accurately constrains the trajectory of the grinding tool group to avoid blade deflection and failure and improve cutting smoothness.

[0010] As a further description of the above technical solution: the assembly block is provided with a plurality of grinding plates at one end away from the mounting block, a plurality of grinding discs are provided in the middle of the grinding plate, a limiting plate is provided on one side of the grinding plate, and the limiting plate cooperates with the grinding disc, a plurality of grinding bottom grooves are provided in the middle of the grinding plate, a rotating bottom hole is provided on both sides of the grinding bottom groove, bottom groove holes are provided at the four corners of the grinding plate, the grinding disc includes a grinding knife group arranged inside the grinding bottom groove, grinding rods are provided on both sides of the grinding knife group, and the grinding rods cooperate with the rotating bottom holes, the limiting plate A plurality of grinding top grooves are provided in the middle part, and the grinding top grooves are matched with the grinding knife group. Rotating top holes are provided on both sides of the grinding top groove, and the rotating top holes are matched with the grinding rod. Top slot holes are provided at the four corners of the limiting plate, and the top slot holes are connected to the bottom slot holes by limiting bolts. Through the cooperation of the grinding top groove and the grinding bottom groove, it is ensured that the knife group has a reliable fulcrum when subjected to force to prevent unstable grinding. The cooperation of the grinding rod and the rotating hole enables the knife group to have a certain angle adjustment ability to adapt to different pipe diameters or recessed parts, and the limiting bolts ensure that the knife group does not loosen during operation, thereby controlling the grinding depth and angle.

[0011] As a further description of the above technical solution: the pipe cleaning assembly includes a rubber ring sleeved on the outside of the mounting block, and a plurality of scraping blocks are arranged on the outer side of the circumference of the rubber ring, and a scraping groove is formed by the gap between the two adjacent scraping blocks, and a scraping ring is arranged inside the scraping groove, and a plurality of sleeve grooves are opened inside the rubber ring, and the sleeve grooves are matched with the sleeve blocks, and an assembly hole is opened in the middle of the sleeve groove, and the assembly hole and the sleeve hole are connected by an assembly bolt. Through the cooperation of the rubber ring and the scraping block, residual impurities on the pipe wall are scraped off to improve the cleaning quality, and the scraping groove design enhances the collection capacity of impurities such as mud, sand, and oil. At the same time, the modular scraping ring design facilitates the replacement of pipe cleaning parts of different models or wear, and forms multiple internal and external structures to cooperate to improve the fit of the scraping and avoid leakage.

[0012] The present invention has the following beneficial effects:

[0013] The large-diameter long-distance pipeline cleaning device with positioning and tracking function designed by the present invention is equipped with a drill plate and a scraping drill bit. The scraping drill bit adopts a conical structure to concentrate stress, effectively penetrate and break the hardened scaling layer, and can quickly remove stubborn deposits through the scraping action of the drill plate. At the same time, the combination of multiple grinding knife groups and grinding rods can efficiently perform grinding to ensure that the deposits are completely removed. The coordination of the grinding top groove and the bottom groove can ensure that the knife group does not swing during operation, thereby providing a more stable grinding effect. The modular design of the grinding plate, drill plate, cleaning assembly, etc. makes the assembly and maintenance of the entire device very simple, and each component can be replaced independently when damaged or worn, without replacing the entire device, thereby reducing maintenance costs and downtime, and the splicing holes and bolt connection design between the components ensure the firmness and reliability of the device.

[0014] The large-diameter long-distance pipeline cleaning device with positioning and tracking function designed by the present invention protects the internal power transmission system from vibration and impact through the design of protective plates and protective rings, and can also ensure the stable operation of the transmission system and extend the service life of the equipment. The limit plate accurately constrains the trajectory of the knife group to avoid blade deflection failure, ensure that efficient grinding work can be maintained under high load, and improve cutting flatness. At the same time, the nested cooperation of the transmission motor, transmission block and sleeve block ensures that power can be effectively transmitted to the grinding assembly, and the design of the sleeve block and transmission block can compensate for installation errors. The impact of vibration on the grinding parts is reduced, ensuring stability and precision during operation. The connection between the docking block and the support rod can avoid loosening or failure during power transmission. The cutter group can fine-tune the angle during operation through the cooperation of the rotating hole and the grinding rod to adapt to different pipe diameters and recessed parts of the pipe wall. This makes the pipe cleaning device not only suitable for pipes of different diameters, but also efficient in cleaning various types of deposits, including light and heavy scaling. The limit plate is fixed with bolts through the top slot hole and the bottom slot hole, which can accurately control the depth and angle of the grinding cutter disc to ensure a uniform and effective grinding process.

[0015] The large-diameter long-distance pipeline cleaning device with positioning and tracking function designed by the present invention, by setting a rubber ring and a scraping block, uses the rubber ring and the scraping block to remove residual impurities on the pipeline wall, and also enhances the impurity collection capacity through the design of the scraping groove. The modular scraping ring design is convenient for replacement according to the pipeline cleaning needs, ensuring that the cleaning efficiency is always maintained in the best state. The multiple internal and external structures make the scraping assembly fit the pipeline surface more closely, avoiding leakage and improving the cleaning quality. At the same time, by setting a positioning mechanism on the support rod, the position of the cleaning device during use can be located in real time, which facilitates the precise operation and adjustment of the cleaning device during use, and improves the convenience and safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0018] Figure 3 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the support rod in the present invention;

[0020] Figure 5 This is a schematic diagram of the power assembly structure of the present invention;

[0021] Figure 6 It is a cross-sectional view of a local structure in the present invention;

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the grinding assembly in the present invention;

[0023] Figure 8 This is a sectional view of the three-dimensional structure of the grinding component of the present invention;

[0024] Figure 9 yes Figure 8 A magnified schematic diagram of the local structure at center A;

[0025] Figure 10 This is a cross-sectional view of the pigging assembly structure of the present invention.

[0026] Legend:

[0027] 1. Support rod; 11. Assembly rod; 12. Transmission groove; 13. First docking hole; 14. Protective plate; 15. Equipment cavity; 16. Assembly ring; 17. Positioning mechanism; 18. Protective ring; 2. Power assembly; 21. Transmission motor; 22. Docking block; 23. Second docking hole; 24. Mounting block; 25. Rotation groove; 26. Transmission block; 27. Mounting hole; 28. Sleeve block; 29. ​​Sleeve hole; 3. Fixing bolt; 4. Grinding assembly; 41. Assembly block; 42. Transmission hole; 43. Splicing ring; 44. Splicing hole; 45. Splicing bolt; 46. Place 47. Drill plate; 48. Scraping drill bit; 49. Fastening hole; 410. Fastening bolt; 411. Grinding plate; 412. Grinding disc; 413. Limiting plate; 414. Grinding bottom groove; 415. Rotating bottom hole; 416. Bottom groove hole; 417. Grinding tool assembly; 418. Grinding rod; 419. Grinding top groove; 420. Rotating top hole; 421. Top groove hole; 422. Limiting bolt; 5. Pipe cleaning assembly; 51. Rubber ring; 52. Scraping block; 53. Scraping groove; 54. Scraping ring; 55. Sleeve groove; 56. Assembly hole; 6. Assembly bolt. DETAILED DESCRIPTION

[0028] Reference Figures 1 to 10 The present invention provides a large-diameter long-distance pipeline cleaning device with a positioning and tracking function, which includes a support rod 1, a power assembly 2 is provided at both ends of the support rod 1, and the power assembly 2 is connected to the support rod 1 by a fixing bolt 3, a grinding assembly 4 is provided at the end of the power assembly 2 away from the support rod 1, a cleaning assembly 5 is provided on the outside of the grinding assembly 4, and the cleaning assembly 5 is connected to the power assembly 2 by an assembly bolt 6.

[0029] As a further implementation plan of the above technical solution: the support rod 1 includes an assembly rod 11 arranged at one end of the power component 2, and a battery is arranged inside the assembly rod 11, and the battery provides power for the transmission motor 21. This is the existing technology and can be specifically set according to the needs of use. Transmission grooves 12 are provided at both ends of the assembly rod 11, and a plurality of first docking holes 13 are provided inside the transmission grooves 12. A protective plate 14 is provided in the middle of the assembly rod 11, and an equipment cavity 15 is provided inside the protective plate 14. An assembly ring 16 is provided inside the equipment cavity 15, and a plurality of positioning mechanisms 17 are provided on the outer side of the circumference of the assembly ring 16. The positioning mechanism 17 here is the existing technology and can be replaced and set according to the needs of use. When in use, the assembly ring 16 is set with a controller according to the needs of use, and the controller is wirelessly connected to the transmission motor 21. A protective ring 18 is provided inside the equipment cavity 15 and on the outer side of the positioning mechanism 17.

[0030] As a further implementation scheme of the above technical solution: the power assembly 2 includes a transmission motor 21 arranged inside the transmission groove 12, a plurality of docking blocks 22 are arranged on the outside of the transmission motor 21, a second docking hole 23 is opened in the middle of the docking block 22, and the second docking hole 23 is connected to the first docking hole 13 by a fixing bolt 3, a mounting block 24 is provided at one end of the transmission motor 21, a rotation groove 25 is opened in the middle of the mounting block 24, a transmission block 26 is connected to the rotating shaft of the transmission motor 21 and is located inside the rotation groove 25, a plurality of mounting holes 27 are opened on one side of the mounting block 24, and the transmission block 26 is provided with a plurality of mounting holes 27. A plurality of sleeve blocks 28 are provided on the outer side of the circumference, and a sleeve hole 29 is opened in the middle of the sleeve block 28. When in use, the transmission motor 21 is used as a power source to drive the subsequent device through its rotating shaft. The transmission motor 21 and the support rod 1 are firmly connected by the docking block 22 and bolts to prevent the connection from loosening due to vibration. The rotating shaft of the transmission motor 21 extends into the rotating groove 25 and fits tightly with the transmission block 26 to transmit the rotational power to the grinding device. The sleeve block 28 is sleeved on the outer periphery of the transmission block 26 to form a tolerance matching structure, absorb assembly errors, and reduce the transmission of vibration to the rear end. The multiple mounting holes 27 on the mounting block 24 improve the connection flexibility with other components.

[0031] As a further implementation scheme of the above technical solution: the grinding component 4 includes an assembly block 41 arranged at one end of the mounting block 24, and the assembly block 41 cooperates with the rotation groove 25, and a transmission hole 42 is provided in the middle of one end of the assembly block 41 close to the mounting block 24, and the transmission hole 42 cooperates with the transmission block 26, a splicing ring 43 is provided in the middle of the assembly block 41, and a plurality of splicing holes 44 are provided at one end of the splicing ring 43, and the splicing holes 44 are connected to the mounting holes 27 by splicing bolts 45, and a plurality of placement holes 46 are provided at one end of the assembly block 41 away from the mounting block 24, and the grinding component 4 also includes a drill plate 47 arranged at one end away from the mounting block 24, the drill A scraping drill bit 48 is provided in the middle of one end of the head plate 47 away from the assembly block 41, and a plurality of fastening holes 49 are provided on the outer side of the circumference of the scraping drill bit 48 and at one end of the drill plate 47, and the fastening holes 49 are connected to the placement holes 46 by fastening bolts 410, and the assembly block 41 is provided with a plurality of grinding plates 411 at one end away from the mounting block 24, and a plurality of grinding discs 412 are provided in the middle of the grinding plates 411, and a limiting plate 413 is provided on one side of the grinding plate 411, and the limiting plate 413 cooperates with the grinding disc 412, and a plurality of grinding bottom grooves 414 are provided in the middle of the grinding plate 411, and a rotating bottom hole 415 is provided on both sides of the grinding bottom groove 414. The four corners of the plate 411 are provided with bottom slot holes 416, the grinding knife disc 412 includes a grinding knife group 417 arranged inside the grinding bottom slot 414, and grinding rods 418 are provided on both sides of the grinding knife group 417, and the grinding rods 418 cooperate with the rotating bottom hole 415. A plurality of grinding top slots 419 are provided in the middle of the limiting plate 413, and the grinding top slots 419 cooperate with the grinding knife group 417, and rotating top holes 420 are provided on both sides of the grinding top slot 419, and the rotating top holes 420 cooperate with the grinding rods 418. The four corners of the limiting plate 413 are provided with top slot holes 421, and the top slot holes 421 are connected to the bottom slot holes 416 by limiting bolts 422. When in use The assembly block 41 transmits the rotation output by the power component 2 to the grinding structure through the transmission hole 42, becoming the power transition center, and the front end of the drill plate 47 is equipped with a scraping drill bit 48, which uses the conical head to concentrate stress, break through and crush the hard scaling layer. At the same time, multiple grinding plates 411 are installed around, and multiple grinding discs 412 are arranged for grinding a wide area of ​​the inner wall of the pipeline. The grinding knife group 417 is installed in the grinding bottom groove 414, and grinding rods 418 are provided on both sides of the grinding knife group 417. They are inserted into the rotating hole to form a micro-angle swing mechanism to adapt to irregular wall surfaces. The limit plate 413 is fixed with a limit bolt 422 through the top slot hole 421 and the bottom slot hole 416 to form a double limit structure to ensure that the knife group will not be displaced or deflected, thereby improving the processing accuracy.

[0032] As a further implementation scheme of the above technical solution: the pig assembly 5 includes a rubber ring 51 sleeved on the outside of the mounting block 24, a plurality of scraping blocks 52 are provided on the outer side of the circumference of the rubber ring 51, and the gaps between the adjacent scraping blocks 52 form scraping grooves 53, and a scraping ring 54 is provided inside the scraping grooves 53. The inside of the rubber ring 51 is provided with a plurality of sleeve grooves 55, and the sleeve grooves 55 cooperate with the sleeve block 28, and the middle of the sleeve groove 55 is provided with an assembly hole 56, and the assembly hole 56 It is connected to the sleeve hole 29 by an assembly bolt 6. When in use, the rubber ring 51 has good fit and elasticity, adheres tightly to the pipe wall, and can adapt to the deformation of different pipe diameters. A plurality of scraping blocks 52 are embedded in its periphery, and scraping grooves 53 are formed at intervals to play a preliminary role in descaling and removing particulate matter. A scraping ring 54 is provided in the scraping groove 53 to further enhance the deep cleaning of the pipe wall and the collection of impurities. The sleeve groove 55 inside the component cooperates with the sleeve block 28 and is firmly connected to the power system by the assembly bolt 6 to prevent displacement or falling off during operation.

[0033] Working principle:

[0034] When using the large-diameter long-distance pipeline cleaning device with positioning and tracking function provided by the present invention, the overall assembly and structural fixation of the device are first completed through the support rod 1. Power components 2 are provided at both ends of the support rod 1, which are firmly connected by bolts. The positioning installation can be quickly completed before the operation, which is convenient for the equipment to enter the interior of the pipeline. After the device is started, the transmission motor 21 serves as the main power source, and its rotating shaft drives the transmission block 26 to rotate at high speed through the rotating groove 25, and the rotational power is smoothly transmitted to the subsequent grinding and cleaning structure. The transmission system is provided with a sleeve block 28 and a sleeve hole 2 The tolerance matching structure of 9 absorbs assembly errors, reduces vibration transmission, and improves system operational stability. During operation, the large-diameter pipeline cleaning device is driven by existing technology by increasing the air pressure in the pipeline. Power is transmitted to the grinding assembly 4, and the mounting block 24 drives the assembly block 41 and the grinding cutter disc 412 to rotate. First, the scraping drill bit 48 at the front end concentrates on breaking the hard scale layer on the inner wall of the pipeline. Then, multiple grinding plates 411 are arranged around it, and the grinding cutter groups 417 on them grind a large area of ​​the pipeline wall, forming a continuous and uniform cleaning belt. The cutter group is inserted into the bottom and top rotating holes through the grinding rods 418 on both sides, forming an adaptive structure that allows micro-angle swing, effectively coping with irregular deformation of the pipeline inner wall. At the same time, the limit plate 413 and the limit bolt 422 form a three-dimensional limit system to ensure the precise positioning of the cutter group during operation, prevent deviation or derailment, and improve grinding accuracy and safety.

[0035] After polishing is completed, the rubber ring 51 arranged on the outside of the mounting block 24 fits the pipe wall through its own elasticity to adapt to different calibers and deformation degrees. The scraping blocks 52 arranged on the periphery and the scraping grooves 53 formed by the gaps can effectively clean residual impurities and particulate matter. At the same time, the embedded scraping ring 54 further deepens the cleaning depth, improves the impurity collection efficiency, and is reliably connected to the sleeve block 28 of the power component 2 through the sleeve groove 55 to ensure that it will not shift or loosen even under high pressure.

[0036] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-diameter long-distance pipeline pigging device with positioning and tracking function, characterized in that: The invention comprises a support rod (1), wherein both ends of the support rod (1) are provided with a power assembly (2), and the power assembly (2) is connected to the support rod (1) via a fixing bolt (3); a grinding assembly (4) is provided at one end of the power assembly (2) away from the support rod (1), a pipe cleaning assembly (5) is provided on the outside of the grinding assembly (4), and the pipe cleaning assembly (5) is connected to the power assembly (2) via an assembly bolt (6); The support rod (1) includes an assembly rod (11) arranged at one end of the power assembly (2), and transmission grooves (12) are provided at both ends of the assembly rod (11), and a plurality of first docking holes (13) are provided inside the transmission grooves (12); A protective plate (14) is provided in the middle of the assembly rod (11), an equipment cavity (15) is provided inside the protective plate (14), an assembly ring (16) is provided inside the equipment cavity (15), a plurality of positioning mechanisms (17) are provided on the outer side of the circumference of the assembly ring (16), and a protective ring (18) is provided inside the equipment cavity (15) and on the outer side of the positioning mechanism (17); The power assembly (2) includes a transmission motor (21) arranged inside the transmission slot (12), a plurality of docking blocks (22) are arranged on the outside of the transmission motor (21), a second docking hole (23) is opened in the middle of the docking block (22), and the second docking hole (23) is connected to the first docking hole (13) by a fixing bolt (3); A mounting block (24) is provided at one end of the transmission motor (21), a rotation slot (25) is provided in the middle of the mounting block (24), a transmission block (26) is connected to the rotating shaft of the transmission motor (21) and is located inside the rotation slot (25), a plurality of mounting holes (27) are provided on one side of the mounting block (24), a plurality of sleeve blocks (28) are provided on the outer side of the circumference of the transmission block (26), and a sleeve hole (29) is provided in the middle of the sleeve block (28); The grinding assembly (4) includes an assembly block (41) arranged at one end of the mounting block (24), and the assembly block (41) cooperates with the rotation groove (25). A transmission hole (42) is provided in the middle of one end of the assembly block (41) close to the mounting block (24), and the transmission hole (42) cooperates with the transmission block (26). A splicing ring (43) is provided in the middle of the assembly block (41), and a plurality of splicing holes (44) are provided at one end of the splicing ring (43), and the splicing holes (44) are connected to the mounting hole (27) by splicing bolts (45). A plurality of placement holes (46) are provided at one end of the assembly block (41) away from the mounting block (24); The pipe cleaning assembly (5) comprises a rubber ring (51) sleeved on the outside of the mounting block (24); a plurality of scraping blocks (52) are arranged on the outside of the circumference of the rubber ring (51); gaps between two adjacent scraping blocks (52) form scraping grooves (53); and scraping rings (54) are arranged inside the scraping grooves (53); A plurality of sleeve grooves (55) are provided inside the rubber ring (51), and the sleeve grooves (55) cooperate with the sleeve blocks (28). An assembly hole (56) is provided in the middle of the sleeve groove (55), and the assembly hole (56) is connected to the sleeve hole (29) via an assembly bolt (6).

2. A large-diameter long-distance pipeline pigging device with positioning and tracking function according to claim 1, characterized in that: The grinding assembly (4) further comprises a drill plate (47) disposed at one end away from the mounting block (24), a scraping drill bit (48) being disposed at the middle of the end of the drill plate (47) away from the assembly block (41), a plurality of fastening holes (49) being provided outside the circumference of the scraping drill bit (48) and located at one end of the drill plate (47), and the fastening holes (49) are connected to the placement holes (46) via fastening bolts (410).

3. The large-diameter long-distance pipeline pigging device with positioning and tracking function according to claim 2 is characterized by: A plurality of grinding plates (411) are provided at one end of the assembly block (41) away from the mounting block (24), a plurality of grinding discs (412) are provided in the middle of the grinding plates (411), a limiting plate (413) is provided on one side of the grinding plates (411), and the limiting plate (413) cooperates with the grinding discs (412).

4. The large-diameter long-distance pipeline pigging device with positioning and tracking function according to claim 3 is characterized by: A plurality of grinding bottom grooves (414) are provided in the middle of the grinding plate (411), rotation bottom holes (415) are provided on both sides of the grinding bottom grooves (414), and bottom groove holes (416) are provided at the four corners of the grinding plate (411).

5. The large-diameter long-distance pipeline pigging device with positioning and tracking function according to claim 4 is characterized in that: The grinding knife disc (412) includes a grinding knife group (417) arranged inside the grinding bottom groove (414), and grinding rods (418) are provided on both sides of the grinding knife group (417), and the grinding rods (418) are matched with the rotating bottom hole (415).

6. The large-diameter long-distance pipeline pigging device with positioning and tracking function according to claim 5 is characterized by: A plurality of grinding top grooves (419) are provided in the middle of the limiting plate (413), and the grinding top grooves (419) are matched with the grinding knife group (417). Rotating top holes (420) are provided on both sides of the grinding top groove (419), and the rotating top holes (420) are matched with the grinding rod (418). Top slot holes (421) are provided at the four corners of the limiting plate (413), and the top slot holes (421) are connected to the bottom slot holes (416) through limiting bolts (422).

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