An adaptive variable diameter oil pipeline cleaning device

Abstract

The application discloses a self-adaptive variable-diameter petroleum pipeline cleaning device and belongs to the technical field of oil and gas pipeline maintenance equipment, which comprises a self-adaptive assembly, three groups of walking wheels arranged in an annular array outside the self-adaptive assembly, and a connecting assembly assembled between the walking wheels and the self-adaptive assembly; the three groups of walking wheels are synchronously radially extended and retracted through the sliding cooperation of the tray and the limiting shaft, and are elastically compensated by the compression spring to adapt to various pipe diameters, so that the application range of the pipeline is greatly widened, the variable-diameter passing stability is improved, the walking and the brush scraping cleaning share one set of power output through the cooperation of the synchronous belt, the gear and the bevel gear reverse transmission, the advancing operation is synchronously linked, integrated continuous cleaning is realized, the cleaning brush and the scraper are oppositely rotated through the reverse transmission of the bevel gear set, the dirt peeling effect is strengthened, the laser cleaning device is arranged towards the pipe opening at the front end of the pipeline, the stubborn wax asphalt dirt layer is melted in advance during the advancing, a gradient composite cleaning mode is formed, and the dirt removal completeness of the pipeline and the comprehensive operation performance of the equipment are enhanced.

Description

Technical Field

[0001] This invention relates to the field of oil pipeline cleaning technology, and more specifically, to an adaptive variable diameter oil pipeline cleaning device. Background Technology

[0002] As the core infrastructure for oil transportation, oil pipelines are prone to the accumulation of waxy, asphalt-like, and gelatinous organic deposits on their inner walls after long-term operation. They also accumulate floating oil and hardened grease. These deposits can significantly reduce the effective transport cross-section of the pipeline, increase transport resistance, reduce transport efficiency, and in severe cases, even block the pipeline and cause safety accidents.

[0003] Currently, most existing pipe cleaning devices adopt a fixed structure design. The radial dimensions of their traveling and cleaning mechanisms cannot be adjusted according to changes in the pipe's inner diameter. A single set of equipment is usually only suitable for pipes of a specific diameter. When there are differences in the pipe's inner diameter, it is necessary to replace the cleaning equipment with one of different specifications. This is cumbersome, time-consuming, and labor-intensive, and the equipment has poor versatility, which greatly limits the efficiency and convenience of pipe cleaning operations. In addition, the cleaning function of existing pipe cleaning equipment is relatively simple. It usually relies on a single mechanical method to treat the dirt on the pipe wall. It has a certain cleaning effect on floating oil and oil stains with low hardness, but it is often difficult to effectively remove stubborn deposits such as paraffin and asphalt that have been attached to the pipe wall for a long time. The problem of incomplete cleaning is prominent.

[0004] Therefore, we have made improvements to this and proposed an adaptive variable diameter oil pipeline cleaning device. Summary of the Invention

[0005] In view of the above-mentioned problems in the existing technology, the purpose of the present invention is to provide an adaptive variable diameter oil pipeline cleaning device.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: an adaptive variable diameter oil pipeline cleaning device, comprising an adaptive adjustment mechanism for adjusting the radial dimension of the entire machine and adapting to pipelines of different inner diameters. The adaptive component has three sets of traveling wheels arranged in a ring array on its outer side. These wheels are used to conform to the inner wall of the pipe, support the equipment, and travel along the pipe. Between the three sets of traveling wheels and the adaptive component, there are three sets of connecting components for synchronous extension and retraction of the traveling wheels to achieve adaptive adjustment of the pipe diameter. Each of the three sets of traveling wheels has a power component on one side for driving the traveling wheels. Each of the three sets of power components has a cleaning component on the side away from the traveling wheels for rotating and brushing the floating oil on the pipe wall and scraping off hardened grease. Each of the three sets of cleaning components has a support component on the side closer to the adaptive component for supporting the cleaning transmission gear and fixing the laser descaling equipment. Each of the three sets of support components has a laser removal device on the side away from the cleaning component for emitting high-temperature lasers to melt the stubborn paraffin and asphalt deposits on the pipe wall.

[0007] Preferably, the adaptive component includes a chassis, a motor is fixedly connected to the center of one side of the chassis, the rotating end of the motor passes through one side of the chassis to the other side, a threaded rod is fixedly connected to the rotating end of the motor, a top plate is rotatably connected to the side of the threaded rod away from the motor via a bearing, a tray is slidably connected to the outer side of the threaded rod, three limiting shafts are fixedly connected in a circular array between the chassis and the top plate, and the tray is slidably connected to the outer side of the three limiting shafts, and three compression springs are fixedly connected in a circular array between the tray and the chassis.

[0008] Preferably, the connecting assembly includes a connecting plate, which is fixedly connected to the outside of the pallet. A connecting rod is hinged to the side of the connecting plate away from the pallet. A U-shaped connecting block is fixedly connected to the side of the connecting rod away from the connecting plate. Connecting rods are rotatably connected to the two inner walls of the U-shaped connecting block. The outer side of the connecting rod is fixedly sleeved inside the walking wheel.

[0009] Preferably, an extension plate 1 is fixedly connected to the lower center of the connecting rod, and a fixing strip 1 is hinged to both sides of the extension plate 1. An extension plate 2 is fixedly connected to the outer side of the tray, and an extension shaft 1 is fixedly sleeved inside the extension plate 2. Both fixing strips 1 are rotatably connected to both sides of the extension shaft 1.

[0010] Preferably, the power assembly includes a second motor, which is fixedly connected to one side of the connecting rod. A driven wheel is fixedly connected to the rotating end of the second motor, and the upper end of the U-shaped connecting block is fixedly connected to... Fixed bar two, which is rotatably connected to driven wheel two near motor two.

[0011] Preferably, a synchronous belt is fitted on the outer side of driven wheel one and driven wheel two. A gear one is fixedly connected to the side of driven wheel one away from motor two. A gear two meshes with the outer side of gear one. The lower end of gear two is fixedly connected to the upper end of connecting rod. An extension shaft two is fixedly connected to the side of driven wheel two away from gear one.

[0012] Preferably, the cleaning assembly includes a cleaning shaft, which is fixedly connected to the side of the extension shaft two away from the gear one. A cleaning brush is fixedly sleeved on the outer side of the cleaning shaft. A bevel gear three is fixedly connected to the side of the cleaning shaft away from the gear one. A bevel gear four meshes with the outer side of the lower end of the bevel gear three. A bevel gear five meshes with the outer side of the upper end of the bevel gear four away from the bevel gear three. A scraper is fixedly connected to the side of the bevel gear five away from the bevel gear four.

[0013] Preferably, the support assembly includes a support bar, which is fixedly connected to the side of the chassis near the motor, and a support shaft is fixedly connected to the upper end of the support bar away from the chassis. The upper end of the support shaft is rotatably connected to the lower end of the bevel gear four via a bearing.

[0014] Preferably, an L-shaped fixing post one is fixedly connected to the lower end of the support bar on the side away from the chassis, and the upper part of the L-shaped fixing post one away from the support bar is fixedly connected to one side of the laser removal device. An L-shaped fixing post two is fixedly connected to the upper part of the side of the L-shaped fixing post one near the support bar, and the upper part of the side of the L-shaped fixing post two away from the laser removal device is rotatably connected to one side of the bevel gear five through a bearing.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting up adaptive and connecting components, utilizes a motor to drive a threaded rod to rotate, causing the tray to move axially along the limiting shaft. Combined with the elastic support of a compression spring, this allows the three sets of traveling wheels to achieve precise and synchronized radial expansion and contraction under the synchronous traction of the connecting components. This enables it to adaptively conform to the inner walls of oil pipelines with different inner diameters, solving the problem that existing pipeline cleaning devices cannot adapt to changes in pipe diameter and require... Addressing the issue of changing pipe diameters, this device significantly improves the versatility and adaptability of the equipment, reduces equipment procurement and maintenance costs, and ensures that the compression spring provides continuous elastic support during adjustment, ensuring that the traveling wheels always maintain a good fit with the pipe wall. This avoids slippage of the traveling wheels caused by minor unevenness in the pipe wall, thus guaranteeing the stability and reliability of the entire machine in pipes of various diameters.

[0016] 2. This invention, by setting up a power component, a cleaning component, and a laser removal device, utilizes a single power source provided by a second motor. Power is synchronously distributed to the traveling wheels, cleaning brush, and scraper via a synchronous belt and gear system, achieving coordinated driving of traveling, brushing, and scraping. This results in a compact structure and high energy utilization. The cleaning brush rotates to scrub the floating oil on the pipe wall, while the scraper, driven by the reversing transmission of bevel gears three, four, and five, scrapes away hardened grease. The laser removal device emits a high-temperature laser to ablate stubborn deposits of paraffin and asphalt. These three components work together to sequentially complete the brushing of floating oil, the scraping of hardened grease, and the ablation of stubborn deposits. This achieves layered and comprehensive cleaning of different types and hardness of contaminants on the inner wall of the pipeline, overcoming the shortcomings of existing cleaning equipment that is limited to simple brushing and ineffective against stubborn deposits. This effectively improves the thoroughness and efficiency of pipeline cleaning, extends the service life of the pipeline, and ensures the safety and smooth flow of oil transportation. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of an adaptive variable diameter oil pipeline cleaning device provided in this application; Figure 2 is a schematic diagram of the adaptive component structure of an adaptive variable diameter oil pipeline cleaning device provided in this application; Figure 3 is a schematic diagram of the connection component structure of an adaptive variable diameter oil pipeline cleaning device provided in this application; Figure 4 is a schematic diagram of the power component structure of an adaptive variable diameter oil pipeline cleaning device provided in this application; Figure 5 shows the cleaning component structure of an adaptive variable diameter oil pipeline cleaning device provided in this application. Schematic diagram; Figure 6 is a schematic diagram of the support component structure of an adaptive variable diameter oil pipeline cleaning device provided in this application.

[0018] In the diagram: 1. Adaptive component; 101. Chassis; 102. Motor 1; 103. Threaded rod; 104. Top plate; 105. Tray; 106. Limiting shaft; 107. Compression spring; 2. Traveling wheel; 3. Connecting component; 301. Connecting plate; 302. Connecting rod; 303. U-shaped connecting block; 304. Connecting rod; 305. Extension plate 1; 306. Fixing bar 1; 307. Extension plate 2; 308. Extension shaft 1; 4. Power assembly; 401. Motor 2; 402. Driven wheel 1; 403. Fixing bar 2; 404. Driven wheel 2; 405. Synchronous belt; 406. Gear 1; 407. Gear 2; 408. Extension shaft 2; 5. Cleaning assembly; 501. Cleaning shaft; 502. Cleaning brush; 503. Bevel gear 3; 504. Bevel gear 4; 505. Bevel gear 5; 506. Scraper; 6. Support assembly; 601. Support bar; 602. Support shaft; 603. L-shaped fixing post 1; 604. L-shaped fixing post 2; 7. Laser cleaning device. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0020] Please refer to Figure 1- Figure 6 As shown, the present invention provides a technical solution: an adaptive variable diameter oil pipeline cleaning device, comprising an adaptive component 1 for adjusting the radial dimension of the entire machine and adapting to pipelines of different inner diameters. Three sets of traveling wheels 2 are arranged in a ring array on the outer side of the adaptive component 1 for conforming to the inner wall of the pipeline, supporting the equipment, and traveling along the pipeline. Three sets of connecting components 3 are provided between the three sets of traveling wheels 2 and the adaptive component 1 for synchronously extending and retracting the traveling wheels 2 to achieve adaptive adjustment of the pipe diameter. One side of each of the three sets of power components 4 is provided with a power component 4 for driving the walking wheel 2 to move. The side of each of the three sets of power components 4 away from the walking wheel 2 is provided with a cleaning component 5 for rotating and brushing the floating oil on the pipe wall and scraping off the hardened oil stains. The side of each of the three sets of cleaning components 5 near the adaptive component 1 is provided with a support component 6 for supporting the cleaning transmission gear and fixing the laser descaling equipment. The side of each of the three sets of support components 6 away from the cleaning component 5 is provided with a laser removal device 7 for emitting high-temperature lasers to melt the stubborn deposits of paraffin and asphalt on the pipe wall.

[0021] In the preferred embodiment of this technical solution, please refer to Figure 2As shown, the adaptive component 1 includes a chassis 101. A motor 102 is fixedly connected to the center of one side of the chassis 101. The rotating end of the motor 102 passes through one side of the chassis 101 to the other side. A threaded rod 103 is fixedly connected to the rotating end of the motor 102. A top plate 104 is rotatably connected to the side of the threaded rod 103 away from the motor 102 via a bearing. A tray 105 is slidably connected to the outside of the threaded rod 103. Three limiting shafts 106 are fixedly connected in a ring array between the chassis 101 and the top plate 104, and the tray 105 is slidably connected to the outside of the three limiting shafts 106. Three compression springs 107 are fixedly connected in a ring array between the tray 105 and the chassis 101.

[0022] Furthermore, the adaptive component 1 drives the threaded rod 103 to rotate via the motor 102, causing the tray 105 to move axially along the limiting shaft 106. With the elastic support of the compression spring 107, the position of the tray 105 is precisely adjusted. Then, the connecting component 3 synchronously drives the three sets of traveling wheels 2 to extend and retract radially to adapt to oil pipelines with different inner diameters.

[0023] In the preferred embodiment of this technical solution, please refer to Figure 3 As shown, the connecting assembly 3 includes a connecting plate 301, which is fixedly connected to the outside of the tray 105. A connecting rod 302 is hinged to the side of the connecting plate 301 away from the tray 105. A U-shaped connecting block 303 is fixedly connected to the side of the connecting rod 302 away from the connecting plate 301. A connecting rod 304 is rotatably connected to the two inner walls of the U-shaped connecting block 303. The outer side of the connecting rod 304 is fixedly sleeved inside the walking wheel 2.

[0024] Furthermore, the connecting assembly 3 transmits the movement of the pallet 105 to the connecting rod 302 via the connecting plate 301. The swinging of the connecting rod 302 drives the U-shaped connecting block 303 and the connecting rod 304 to move, causing the traveling wheel 2 to move radially. The wheels unfold and retract, thus completing the action of adhering to and separating from the inner wall of the pipe.

[0025] In the preferred embodiment of this technical solution, please refer to Figure 3 As shown, an extension plate 305 is fixedly connected to the lower center of the connecting rod 302. Fixing strips 306 are hinged to both sides of the extension plate 305. An extension plate 307 is fixedly connected to the outer side of the tray 105. An extension shaft 308 is fixedly sleeved inside the extension plate 307, and the two fixing strips 306 are rotatably connected to both sides of the extension shaft 308.

[0026] Furthermore, the lower end of the connecting rod 302 is rotatably connected to the extension shaft 308 via the extension plate 305 and the fixing strip 306. The extension shaft 308 is fixed on the extension plate 307. This structure provides a stable swing fulcrum for the connecting rod 302, ensuring smooth movement and balanced force during the extension and retraction of the traveling wheel 2, and preventing skewness.

[0027] In the preferred embodiment of this technical solution, please refer to Figure 4 As shown, the power assembly 4 includes a second motor 401, which is fixedly connected to one side of the connecting rod 302. A driven wheel 402 is fixedly connected to the rotating end of the second motor 401. A fixing strip 403 is fixedly connected to the upper end of the U-shaped connecting block 303. A driven wheel 404 is rotatably connected to the fixing strip 403 near the second motor 401.

[0028] Furthermore, the power assembly 4 drives the driven wheel 402 to rotate via the motor 401, and transmits the power to the driven wheel 404 via the synchronous belt 405. The gear 406 at the rear end of the driven wheel 402 meshes with the gear 407, driving the connecting rod 304 and the traveling wheel 2 to rotate, providing the driving force required for the whole machine to travel along the pipeline.

[0029] In the preferred embodiment of this technical solution, please refer to Figure 4 As shown, a synchronous belt 405 is fitted on the outer side of driven wheel 1 402 and driven wheel 2 404. A gear 1 406 is fixedly connected to the side of driven wheel 1 402 away from motor 2 401. A gear 2 407 meshes with the outer side of gear 1 406, and the lower end of gear 2 407 is fixedly connected to the upper end of connecting rod 304. An extension shaft 2 408 is fixedly connected to the side of driven wheel 2 404 away from gear 1 406.

[0030] Furthermore, while receiving rotational power, the driven wheel 404 has an extension shaft 408 on its side. The power is synchronously output to the cleaning component 5 to realize the linkage drive of walking and cleaning actions; the meshing transmission ratio of gear 1 406 and gear 2 407 is optimized to ensure that the walking wheel 2 obtains sufficient torque to overcome the resistance of the inner wall of the pipe.

[0031] In the preferred embodiment of this technical solution, please refer to Figure 5As shown, the cleaning assembly 5 includes a cleaning shaft 501, which is fixedly connected to the side of the extension shaft 2 408 away from the gear 1 406. A cleaning brush 502 is fixedly sleeved on the outer side of the cleaning shaft 501. A bevel gear 3 503 is fixedly connected to the side of the cleaning shaft 501 away from the gear 1 406. A bevel gear 4 504 meshes with the outer side of the lower end of the bevel gear 3 503. A bevel gear 505 meshes with the outer side of the upper end of the bevel gear 4 504 away from the bevel gear 3 503. A scraper 506 is fixedly connected to the side of the bevel gear 505 away from the bevel gear 4 504.

[0032] Furthermore, the cleaning component 5 drives the cleaning brush 502 to rotate via the cleaning shaft 501, which brushes away the floating oil on the pipe wall; at the same time, the bevel gear 3 503 at the end of the cleaning shaft 501 meshes with the bevel gear 4 504 and the bevel gear 505 in sequence, and drives the scraper 506 to rotate after changing the direction of rotation, which mechanically scrapes away the hardened grease, forming a composite cleaning effect that combines brushing and scraping.

[0033] In the preferred embodiment of this technical solution, please refer to Figure 6 As shown, the support assembly 6 includes a support bar 601, which is fixedly connected to the side of the chassis 101 near the motor 102. The upper end of the support bar 601 away from the chassis 101 is fixedly connected to a support shaft 602, and the upper end of the support shaft 602 is rotatably connected to the lower end of the bevel gear 504 through a bearing.

[0034] Furthermore, the support assembly 6 provides stable rotational support for the bevel gear 504 through the support bar 601 and the support shaft 602, ensuring the meshing accuracy and transmission reliability of the bevel gear system; the support bar 601 is fixed on the chassis 101 and maintains the cleaning assembly 5 in a stable working position as the whole machine moves.

[0035] In the preferred embodiment of this technical solution, please refer to Figure 6 As shown, an L-shaped fixing post 603 is fixedly connected to the lower end of the support bar 601 on the side away from the chassis 101. The upper part of the L-shaped fixing post 603, away from the support bar 601, is fixedly connected to the side of the laser removal device 7. 603 An L-shaped fixing post 604 is fixedly connected to the upper part of the side near the support bar 601, and the upper part of the L-shaped fixing post 604 away from the laser removal device 7 is rotatably connected to the side of the bevel gear 505 through a bearing.

[0036] Furthermore, L-shaped fixing column 603 fixes the laser cleaning device 7 to the lower side of the support bar 601, so that the laser cleaning device 7 and the cleaning component 5 maintain a relatively fixed spatial position; L-shaped fixing column 604 provides auxiliary rotation support for bevel gear 505, ensuring that the scraper 506 is subjected to balanced force and runs smoothly during rotational scraping; the laser emitting end of the laser cleaning device 7 faces the inlet of the pipeline and emits a high-temperature laser to melt the stubborn paraffin and asphalt deposits that are difficult to remove from the pipe wall at high temperature, forming a synergistic descaling effect with the mechanical brushing and scraping of the front cleaning component 5, effectively improving the thoroughness of pipeline cleaning.

[0037] Working principle: When the motor 102 is started, the rotating end of the motor 102 drives the threaded rod 103 to rotate. The threaded rod 103 drives the tray 105 to move along the axial direction of the limiting shaft 106. When the tray 105 moves, it pushes the connecting rod 302 to swing through the connecting plate 301. The connecting rod 302 then drives the traveling wheel 2 to extend outward and retract inward radially through the U-shaped connecting block 303 and the connecting rod 304. At the same time, the compression spring 107 provides a continuous elastic preload between the tray 105 and the chassis 101 to ensure that the traveling wheel 2 maintains a stable fit with the pipe wall after adjustment and to compensate for the radial displacement caused by the slight unevenness or ellipticity change of the pipe wall. Under the synchronous linkage traction of the connecting component 3, the three sets of traveling wheels 2 achieve synchronous radial extension and contraction, thereby adaptively fitting the inner wall of oil pipelines with different inner diameters and completing the adjustment of the radial dimension of the whole machine.

[0038] After the entire machine enters the pipeline, motor 2 401 starts, and its rotating end drives driven wheel 1 402 to rotate. Driven wheel 1 402 transmits power to driven wheel 2 404 through synchronous belt 405. At the same time, gear 1 406 at the rear end of driven wheel 1 402 meshes with gear 2 407, driving connecting rod 304 and the traveling wheel 2 fixedly sleeved on its outside to rotate, so that the entire machine moves along the inner wall of the pipeline. While driven wheel 2 404 is rotating, it outputs power to cleaning shaft 501 through extension shaft 2 408 on its side. Cleaning shaft 501 drives the outer cleaning brush 502 to rotate, brushing the floating oil on the pipe wall; at the same time, bevel gear 3 503 at the end of cleaning shaft 501 meshes in sequence. The bevel gear 4 (504) and bevel gear 5 (505) drive the scraper 506 and cleaning brush 502 to rotate in opposite directions after two vertical reversal transmissions. This reverses the scraping of hardened grease, enhancing the grease removal effect. While the mechanical cleaning is in progress, the laser removal device 7, fixed to the support component 6, continuously emits a high-temperature laser to melt the stubborn paraffin and asphalt deposits on the pipe wall. The brushing and scraping of the cleaning component 5 and the high-temperature melting of the laser removal device 7 work together. During the movement of the machine, floating oil is brushed, hardened grease is scraped, and stubborn deposits are melted in sequence, achieving comprehensive and efficient cleaning of the inner wall of the oil pipeline.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0040] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. An adaptive variable diameter oil pipeline cleaning device, characterized in that, The device includes an adaptive component (1) for adjusting the radial dimensions of the whole machine and adapting to pipes with different inner diameters. The outer side of the adaptive component (1) has three sets of traveling wheels (2) arranged in a ring array for fitting the inner wall of the pipe, carrying the equipment and traveling along the pipe. Between the three sets of traveling wheels (2) and the adaptive component (1), there are three sets of connecting components (3) for synchronous extension and retraction of the traveling wheels to realize adaptive adjustment of the pipe diameter. One side of each of the three sets of traveling wheels (2) is provided with a power component (4) for driving the traveling wheels (2) to travel. The side of each of the three sets of power components (4) away from the traveling wheels (2) is provided with a cleaning component (5) for rotating and brushing the floating oil on the pipe wall and scraping off the hardened oil scale. The side of each of the three sets of cleaning components (5) close to the adaptive component (1) is provided with a support component (6) for supporting the cleaning transmission gear and fixing the laser descaling equipment. The side of each of the three sets of support components (6) away from the cleaning component (5) is provided with a laser removal device (7) for emitting high-temperature laser and melting the stubborn deposits of paraffin and asphalt on the pipe wall.

2. The adaptive variable diameter oil pipeline cleaning device according to claim 1, characterized in that, The adaptive component (1) includes a chassis (101). A motor (102) is fixedly connected to the center of one side of the chassis (101). The rotating end of the motor (102) passes through one side of the chassis (101) to the other side. A threaded rod (103) is fixedly connected to the rotating end of the motor (102). A top plate (104) is rotatably connected to the side of the threaded rod (103) away from the motor (102) via a bearing. A tray (105) is slidably connected to the outside of the threaded rod (103). Three limiting shafts (106) are fixedly connected in a ring array between the chassis (101) and the top plate (104). The tray (105) is slidably connected to the outside of the three limiting shafts (106). Three compression springs (107) are fixedly connected in a ring array between the tray (105) and the chassis (101).

3. The adaptive variable diameter oil pipeline cleaning device according to claim 2, characterized in that, The connecting assembly (3) includes a connecting plate (301), which is fixedly connected to the outside of the tray (105). A connecting rod (302) is hinged to the side of the connecting plate (301) away from the tray (105). A U-shaped connecting block (303) is fixedly connected to the side of the connecting rod (302) away from the connecting plate (301). A connecting rod (304) is rotatably connected to the two inner walls of the U-shaped connecting block (303). The outer side of the connecting rod (304) is fixedly sleeved inside the walking wheel (2).

4. The adaptive variable diameter oil pipeline cleaning device according to claim 3, characterized in that, The lower end of the connecting rod (302) is fixedly connected to an extension plate 1 (305). Both sides of the extension plate 1 (305) are hinged with fixing strips 1 (306). The outer side of the tray (105) is fixedly connected to an extension plate 2 (307). An extension shaft 1 (308) is fixedly sleeved inside the extension plate 2 (307), and both fixing strips 1 (306) are rotatably connected to both sides of the extension shaft 1 (308).

5. The adaptive variable diameter oil pipeline cleaning device according to claim 3, characterized in that, The power assembly (4) includes a second motor (401), which is fixedly connected to one side of the connecting rod (302). A driven wheel (402) is fixedly connected to the rotating end of the second motor (401). A fixing strip (403) is fixedly connected to the upper end of the U-shaped connecting block (303). A driven wheel (404) is rotatably connected to the fixing strip (403) near the second motor (401).

6. The adaptive variable diameter oil pipeline cleaning device according to claim 5, characterized in that, A synchronous belt (405) is fitted on the outer side of the driven wheel 1 (402) and the driven wheel 2 (404). A gear 1 (406) is fixedly connected to the side of the driven wheel 1 (402) away from the motor 2 (401). A gear 2 (407) meshes with the outer side of the gear 1 (406), and the lower end of the gear 2 (407) is fixedly connected to the upper end of the connecting rod (304). An extension shaft 2 (408) is fixedly connected to the side of the driven wheel 2 (404) away from the gear 1 (406).

7. The adaptive variable diameter oil pipeline cleaning device according to claim 1, characterized in that, The cleaning assembly (5) includes a cleaning shaft (501), which is fixedly connected to the side of the extension shaft (408) away from the gear (406). A cleaning brush (502) is fixedly sleeved on the outer side of the cleaning shaft (501). A bevel gear (503) is fixedly connected to the side of the cleaning shaft (501) away from the gear (406). A bevel gear (504) meshes with the lower outer side of the bevel gear (503). A bevel gear (505) meshes with the upper outer side of the bevel gear (504) away from the bevel gear (503). A scraper (506) is fixedly connected to the side of the bevel gear (505) away from the bevel gear (504).

8. The adaptive variable diameter oil pipeline cleaning device according to claim 2, characterized in that, The support assembly (6) includes a support bar (601), which is fixedly connected to the side of the chassis (101) near the motor (102). The upper end of the support bar (601) away from the chassis (101) is fixedly connected to a support shaft (602), and the upper end of the support shaft (602) is rotatably connected to the lower end of the bevel gear (504) through a bearing.

9. The adaptive variable diameter oil pipeline cleaning device according to claim 8, characterized in that, An L-shaped fixing post one (603) is fixedly connected to the lower end of the support bar (601) on the side away from the chassis (101), and the upper part of the side of the L-shaped fixing post one (603) away from the support bar (601) is fixedly connected to the side of the laser removal device (7). An L-shaped fixing post two (604) is fixedly connected to the upper part of the side of the L-shaped fixing post one (603) close to the support bar (601), and the upper part of the side of the L-shaped fixing post two (604) away from the laser removal device (7) is rotatably connected to the side of the bevel gear five (505) through a bearing.

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