A non-destructive testing crawler for a shock absorbing pipeline

Abstract

The application relates to a damping pipeline nondestructive detection crawler, belonging to the field of pipeline crawlers, which comprises a moving mechanism, a clamping mechanism installed on the top surface of the moving mechanism and a damping mechanism connected between the moving mechanism and the clamping mechanism; the moving mechanism comprises a moving base, a lower roller assembly installed on the moving base and a driving device for driving the lower roller assembly to rotate, the clamping mechanism comprises a supporting bottom plate and a clamping assembly installed on the top surface of the supporting bottom plate and used for arranging a detection device, and a damping gap for arranging the damping mechanism is arranged between the moving base and the supporting bottom plate; the damping mechanism comprises spring damping seats symmetrically installed on the top surface of the moving base and a damping assembly installed on the top surface of the moving base and hinged with the supporting bottom plate. The application has the effects of improving the damping effect of the pipeline detection crawler and guaranteeing that the detection device can work in a stable state.

Description

Technical Field

[0001] This application relates to the field of pipe crawlers, and more particularly to a vibration-damping pipe non-destructive testing crawler. Background Technology

[0002] In the industrial sector, pipelines serve as crucial infrastructure for transporting various media. Their safe operation directly impacts the continuity and stability of production, as well as the safety of personnel and the environment. With continuous industrial development, the requirements for pipeline quality and safety are increasingly stringent, leading to greater emphasis on non-destructive testing (NDT) technology. To conduct internal pipeline inspections, crawler-mounted inspection devices are often used to enter the pipeline for operations.

[0003] Current pipeline inspection crawlers mainly consist of a moving mechanism, a detection device, and a clamping mechanism for arranging the detection device. During the crawler's movement, when it encounters protrusions, depressions, or other obstacles inside the pipeline, these vibrations are directly transmitted to the detection device. This makes it difficult to ensure that the detection device operates in a stable state, resulting in inaccurate detection results and an inability to accurately detect internal pipeline defects. Furthermore, long-term vibrations may damage the detection device, shorten its service life, and increase inspection costs and maintenance workload.

[0004] In view of the aforementioned technologies, the inventors believe that there is a need for a pipe inspection crawler with shock absorption effect. Utility Model Content

[0005] To improve the vibration damping effect of the pipeline inspection crawler and ensure that the inspection device can work in a stable state, this application provides a vibration damping pipeline non-destructive inspection crawler.

[0006] The vibration-damping pipeline non-destructive testing crawler provided in this application adopts the following technical solution: A vibration-damping pipeline non-destructive testing crawler includes a moving mechanism, a clamping mechanism mounted on the top surface of the moving mechanism, and a vibration-damping mechanism connecting the moving mechanism and the clamping mechanism. The moving mechanism includes a moving base, a lower roller assembly mounted on the moving base, and a driving device for driving the lower roller assembly to rotate. The clamping mechanism includes a supporting base plate and a clamping assembly mounted on the top surface of the supporting base plate for arranging a testing device. A vibration-damping gap is provided between the moving base and the supporting base plate for arranging the vibration-damping mechanism. The vibration-damping mechanism includes spring damping seats symmetrically mounted on the top surface of the moving base and vibration-damping assemblies mounted on the top surface of the moving base and hinged to the supporting base plate.

[0007] By adopting the above technical solution, during the operation of the vibration-damping pipeline non-destructive testing crawler, the moving mechanism is driven to move inside the pipeline by the drive component. When the vibration-damping pipeline non-destructive testing crawler encounters a protrusion or depression and vibrates, the vibration can be transmitted to the vibration-damping mechanism. The shock is absorbed by the setting of the spring damping seat and the vibration-damping component, and the stability of the clamping mechanism is maintained, so that the testing device fixed on the clamping mechanism can work in a stable state.

[0008] Optionally, the shock absorption assembly is arranged between the spring damping seats. The shock absorption assembly includes two fixed plates mounted on the top surface of the movable base and arranged opposite to each other, a sliding rod connecting the two fixed plates, two sliding sleeves slidably mounted on the sliding rods, a sliding spring sleeved on the sliding rods, and a linkage rod assembly connecting the sliding sleeves and the supporting base plate. One end of the sliding spring abuts against the fixed plate and the other end abuts against the sliding sleeve. The linkage rod assembly includes a hinge seat mounted on the bottom surface of the supporting base plate and two connecting rods with one end hinged to the hinge seat, and the other end of the connecting rods hinged to the sliding sleeve.

[0009] By adopting the above technical solution, the specific structure of the shock absorption component is disclosed. The impact force is transmitted to the sliding sleeve through the linkage group. Since the connecting rod, sliding sleeve, and hinge seat are all hinged, the vertical displacement of the supporting base plate is converted into the horizontal sliding of the sliding sleeve along the sliding rod, which in turn compresses or stretches the sliding spring. The sliding spring absorbs the vibration energy through its own deformation, forming a conversion path of "vertical vibration → horizontal force transmission → spring energy storage and buffering". It works with the spring damping seat to form multi-stage shock absorption, further weakening the vibration energy, reducing the vibration transmitted to the moving base, and improving the overall structure's impact resistance.

[0010] Optionally, the clamping assembly includes a clamping base, two clamping plates slidably mounted on the clamping base, a clamping rod connected to the clamping plates and extending in a direction away from the other clamping plate, and a clamping spring sleeved on the clamping rod; one end of the clamping spring abuts against the clamping plate and the other end abuts against the clamping base, the clamping base has a clamping groove for the clamping plates to slide, and the clamping base has a through hole for the clamping rod to pass through, and the side of the clamping rod facing away from the clamping plate has a limiting part.

[0011] By adopting the above technical solution, the specific structure of the clamping assembly is disclosed. A clamping gap is provided between the two clamping plates for accommodating the detection device. When the detection device is positioned within the clamping gap, the clamping spring is compressed, thereby driving the two clamping plates to press against each other, thus enabling the detection device to be mounted on the clamping assembly. The limiting portion on the side of the clamping rod facing away from the clamping plate helps reduce the probability of the clamping rod detaching from the clamping seat.

[0012] Optionally, the support base plate is further provided with mounting columns at both ends of the clamping assembly. The mounting columns are provided with sliding grooves and upper roller assemblies are installed in the sliding grooves. The upper roller assembly includes an adjusting rod that is slidably installed in the sliding groove, an upper roller connected to the side of the adjusting rod away from the mounting column, and a limiting component installed on the mounting column and cooperating with the adjusting rod.

[0013] By adopting the above technical solution, the upper roller can be made to fit against the upper side wall of pipes of different diameters by setting the adjusting rod that is slidably installed in the sliding groove. Then, through the cooperation between the limiting component and the adjusting rod, the upper roller is fixed at a certain height, which further reduces the vibration amplitude of the vibration damping pipe non-destructive testing crawler during operation and ensures that the testing device can work in a stable state.

[0014] Optionally, the limiting assembly includes a limiting cover mounted on the mounting column, a limiting rod slidably mounted on the limiting cover, and a limiting spring sleeved on the limiting rod; the limiting cover has a sliding chamber, one end of the limiting spring abuts against the sliding chamber and the other end is connected to the limiting rod, the extending direction of the limiting rod is perpendicular to the extending direction of the mounting column, and the adjusting rod has limiting holes spaced apart along its length for the limiting rod to pass through.

[0015] By adopting the above technical solution, the specific structure of the limiting component is disclosed. When it is necessary to fix the position of the adjusting rod in the sliding groove, the limiting rod is first moved away from the mounting column. When the adjusting rod slides to the predetermined position, the limiting rod is inserted into the corresponding limiting hole in the adjusting rod. Due to the presence of the limiting spring, the limiting rod will always tend to be inserted into the limiting hole, reducing the probability that the limiting rod will come out of the limiting hole during operation.

[0016] Optionally, a limiting plate is provided on the side of the adjusting rod away from the upper roller to prevent the adjusting rod from dislodging from the sliding groove.

[0017] By adopting the above technical solution, the setting of the limiting plate on the side of the adjusting rod away from the upper roller helps to reduce the probability of the adjusting rod coming out of the sliding groove and ensures the stability of the upper roller on the mounting column.

[0018] Optionally, the movable base has a mounting chamber, and the lower roller assembly includes a lower roller, a mounting rod for mounting the lower roller, and an adjustment assembly mounted in the mounting chamber and cooperating with the mounting rod. The adjustment assembly includes a rotating rod arranged perpendicular to the extension direction of the mounting rod and rotatably mounted on the movable base, a bevel gear set mounted on the rotating rod, and an extension rod connecting the bevel gear set and the mounting rod. The mounting rod has an arrangement slot for arranging the extension rod, and the mounting rod has an insertion interface at the arrangement slot for inserting the extension rod. The mounting rod is threadedly engaged with the extension rod at the insertion interface.

[0019] By adopting the above technical solution, the specific structure of the lower roller assembly is disclosed. By rotating the rotating rod, the bevel gear set converts the rotational motion into the linear motion of the extension rod. The extension rod extends and retracts within the arrangement slot, thereby driving the mounting rod and the lower rollers to move vertically. This design allows the movable base to flexibly adjust the distance between each lower roller and the movable base according to the conditions inside the pipeline, ensuring that all rollers are evenly stressed and in contact with the inner wall of the pipeline. This reduces the probability of equipment tilting or shaking due to uneven ground, and improves overall stability.

[0020] Optionally, the rotating rod has a rotating portion extending outside the mounting cavity, and the rotating rod is provided with a rotating handle at the rotating portion.

[0021] By adopting the above technical solution, the rotating handle at the rotating part of the rotating rod allows the operator to adjust the distance between the lower roller and the moving base without disassembling the moving base, effectively improving work efficiency.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. A vibration-damping pipeline non-destructive testing crawler, in the working process of the vibration-damping pipeline non-destructive testing crawler, the moving mechanism is driven to move in the pipeline by the driving component. When the vibration-damping pipeline non-destructive testing crawler encounters a protrusion or depression and vibrates, it can transmit the vibration to the vibration-damping mechanism. The shock is absorbed by the setting of the spring damping seat and the vibration-damping component, and the stability of the clamping mechanism is maintained, so that the testing device fixed on the clamping mechanism can work in a stable state. 2. By installing columns on the top surface of the support base plate and the upper roller assembly in the columns, the upper rollers can fit against the upper sidewalls of pipes of different diameters. Then, through the cooperation between the limiting component and the adjusting rod, the upper rollers are fixed at a certain height, further reducing the vibration amplitude of the vibration damping pipe non-destructive testing crawler during operation and ensuring that the testing device can work in a stable state. 3. By configuring the lower roller assembly, rotating the rotating rod converts the rotational motion into linear motion of the extension rod via the bevel gear set. The extension rod extends and retracts within the arrangement slot, thereby driving the mounting rod and lower rollers to move vertically. This design allows the movable base to flexibly adjust the distance between each lower roller and the movable base according to the conditions inside the pipeline, ensuring that all rollers are evenly stressed and in contact with the inner wall of the pipeline. This reduces the probability of equipment tilting or shaking due to uneven ground, improving overall stability. Attached Figure Description

[0023] Figure 1 This is a front view structural schematic diagram of the vibration damping pipeline non-destructive testing crawler in the embodiments of this application.

[0024] Figure 2 This is a schematic diagram of the structure of the movable base and the lower roller assembly in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram of the clamping component in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of the mounting column and the upper roller assembly in an embodiment of this application.

[0027] Figure 5 This is a top view of the vibration-damping pipeline non-destructive testing crawler in the embodiments of this application.

[0028] Figure 6 yes Figure 1 A magnified view of a portion of point A in the middle.

[0029] Explanation of reference numerals in the attached drawings: 1. Moving mechanism; 11. Moving base; 111. Mounting chamber; 112. Rotating seat; 12. Lower roller assembly; 121. Lower roller; 122. Mounting rod; 1221. Connecting part; 1222. Arrangement slot; 1223. Insertion interface; 123. Rotating rod; 1231. Rotating part; 1232. Rotating handle; 124. Bevel gear set; 125. Extension rod; 2. Clamping mechanism; 21. Support base plate; 22. Clamping assembly; 221. Clamping seat; 2211. Clamping slot; 222. Clamping plate; 223. Clamping mechanism. 2231. Holding rod; 2232. Limiting part; 224. Clamping spring; 23. Mounting column; 231. Sliding groove; 24. Upper roller assembly; 241. Adjusting rod; 2411. Limiting plate; 2412. Limiting hole; 242. Upper roller; 243. Limiting cover; 2431. Sliding chamber; 244. Limiting rod; 245. Limiting spring; 3. Shock absorption mechanism; 31. Spring damping seat; 32. Shock absorption assembly; 321. Fixing plate; 322. Sliding rod; 323. Sliding sleeve; 324. Sliding spring; 325. Hinge seat; 326. Connecting rod. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0031] This application discloses a vibration-damping pipeline non-destructive testing crawler. (Refer to...) Figure 1 A vibration-damping pipeline non-destructive testing crawler includes a moving mechanism 1, a clamping mechanism 2 installed on the top surface of the moving mechanism 1, and a vibration-damping mechanism 3 connecting the moving mechanism 1 and the clamping mechanism 2.

[0032] Reference Figure 1 and Figure 2 The moving mechanism 1 includes a movable base 11, a lower roller assembly 12 mounted on the movable base 11, and a drive device for driving the lower roller assembly 12 to rotate. The movable base 11 has a mounting chamber 111 for mounting the lower roller assembly 12. The lower roller assembly 12 includes a lower roller 121, a mounting rod 122 for mounting the lower roller 121, and an adjustment assembly mounted in the mounting chamber 111 and cooperating with the mounting rod 122. The drive device is mounted within the lower roller 121.

[0033] Reference Figure 2The adjustment assembly includes a rotating rod 123 arranged perpendicular to the extension direction of the mounting rod 122 and rotatably mounted on the movable base 11, a bevel gear set 124 mounted on the rotating rod 123, and an extension rod 125 connecting the bevel gear set 124 and the mounting rod 122. The movable base 11 has a rotating seat 112 at the mounting chamber 111 for connecting the rotating rod 123. The mounting rod 122 has a connecting portion 1221 arranged within the mounting chamber 111. The connecting portion 1221 has a groove 1222 for arranging the extension rod 125 and a insertion interface 1223 for inserting the extension rod 125. The insertion interface 1223 has a threaded surface. The extension rod 125 is a threaded rod, threadedly engaging with the threaded surface at the insertion interface 1223, and the other end of the extension rod 125 meshes with the bevel gear set 124. To facilitate rotation of the steering rod, the rotating rod 123 has a rotating portion 1231 extending outside the mounting chamber 111, and a rotating handle 1232 is provided at the rotating portion 1231. The movable base 11 has a through hole for the rotating rod 123 to pass through. When the vibration damping pipeline non-destructive testing crawler encounters pipes of different diameters during operation, the rotating rod 123 can be rotated to drive the extension rod 125 to rotate, caused by the bevel gear set 124 fixedly mounted on the rotating rod 123. Through the threaded engagement between the mounting rod 122 insertion interface 1223 and the extension rod 125, the mounting rod 122 slides on the extension rod 125, thereby adjusting the distance between the lower roller 121 and the movable base 11 to adapt to different pipes. In this embodiment, the moving mechanism 1 includes four lower rollers 121, and the bevel gear set 124 includes two bevel gears, which are spaced apart along the extension direction of the rotating rod 123.

[0034] Reference Figure 1 and Figure 3 The clamping mechanism 2 includes a supporting base plate 21 and a clamping assembly 22 mounted on the top surface of the supporting base plate 21 for accommodating the detection device. The clamping assembly 22 includes a clamping seat 221, two clamping plates 222 slidably mounted on the clamping seat 221, a clamping rod 223 connected to the clamping plate 222 and extending in a direction away from the other clamping plate 222, and a clamping spring 224 sleeved on the clamping rod 223. The clamping seat 221 has a clamping groove 2211 for sliding arrangement of the clamping plates 222, and a through hole for the clamping rod 223 to pass through. One end of the clamping spring 224 abuts against the clamping plate 222, and the other end abuts against the clamping groove 2211 of the clamping seat 221. In order to restrict the clamping rod 223 from exiting the clamping groove 2211, a limiting part 2231 is provided on the side of the clamping rod 223 facing away from the clamping plate 222. The outer diameter of the limiting part 2231 is larger than the outer diameter of the through hole on the clamping seat 221.

[0035] Reference Figure 1 and Figure 4 To improve the stability of the non-destructive testing crawler for vibration damping within the pipeline, the support base plate 21 is further provided with mounting columns 23 at both ends of the clamping assembly 22. Each mounting column 23 has a sliding groove 231, and an upper roller assembly 24 for abutting against the upper sidewall of the pipeline is installed within the sliding groove 231. The upper roller assembly 24 includes an adjusting rod 241 slidably mounted in the sliding groove 231, an upper roller 242 connected to the side of the adjusting rod 241 away from the mounting column 23, and a limiting assembly mounted on the mounting column 23 and cooperating with the adjusting rod 241. Mounting holes for the adjusting plate to pass through are provided at the mounting column 23 and the sliding groove 231. To reduce the probability of the adjusting rod 241 detaching from the sliding groove 231, a limiting plate 2411 is provided on the side of the adjusting rod 241 away from the upper roller 242.

[0036] Reference Figure 4 and Figure 5 The limiting assembly includes a limiting cover 243 mounted on the side wall of the mounting column 23, a limiting rod 244 slidably mounted within the limiting cover 243, and a limiting spring 245 sleeved on the limiting rod 244. The extending direction of the limiting rod 244 is perpendicular to the extending direction of the mounting column 23. The limiting cover 243 has a sliding chamber 2431 for sliding the limiting rod 244, and the limiting cover 243 has a through hole for the limiting rod 244 to pass through. The mounting column 23 has a through hole coaxially arranged with the through hole. The limiting spring 245 is arranged within the sliding chamber 2431, with one end abutting against the inner wall of the sliding chamber 2431 and the other end connected to the limiting rod 244. The adjusting rod 241 has spaced-apart limiting holes 2412 along its length for the passing of the limiting rod 244. The height of the upper roller 242 is adjusted by the cooperation between the limiting rod 244 and the limiting holes 2412 at different heights on the adjusting rod 241. In this embodiment, four mounting columns 23 are symmetrically arranged on the top surface of the supporting base plate 21, and the four mounting columns 23 are symmetrically arranged in pairs on both sides of the clamping assembly 22.

[0037] Reference Figure 1 The movable base 11 and the supporting base plate 21 have a damping gap for accommodating the damping mechanism 3. The damping mechanism 3 includes spring damping seats 31 symmetrically mounted on the top surface of the movable base 11 and damping components 32 mounted on the top surface of the movable base 11 and hinged to the supporting base plate 21. The damping seats are symmetrically arranged in pairs on the top surface of the movable base 11, and the damping components 32 are arranged between the four spring damping seats 31.

[0038] Reference Figure 1 and Figure 6The shock absorption assembly 32 includes two fixed plates 321 mounted on the top surface of the movable base 11 and arranged opposite each other, a sliding rod 322 connecting the two fixed plates 321, two sliding sleeves 323 slidably mounted on the sliding rods, a sliding spring 324 sleeved on the sliding rod 322, and a linkage rod assembly connecting the sliding sleeve 323 and the bottom surface of the supporting base plate 21. One end of the sliding spring 324 abuts against the fixed plate 321 and the other end abuts against the sliding sleeve 323. The linkage rod assembly includes a hinge seat 325 mounted on the bottom surface of the supporting base plate 21 and two connecting rods 326, one end of which is hinged to the hinge seat 325 and the other end of which is hinged to the sliding sleeve 323. When vibration occurs during the operation of the vibration damping pipeline non-destructive testing crawler, the spring damping seat 31 provides vertical buffering and energy absorption, and the damping component 32 provides horizontal buffering force. Through the cooperation between the two, the support base plate 21 is kept in stable reset, ensuring the stable detection of the detection device arranged on the top surface of the support base plate 21 clamping component 22.

[0039] The implementation principle of the vibration-damping pipeline non-destructive testing crawler in this embodiment is as follows: During the operation of the vibration-damping pipeline non-destructive testing crawler, the moving mechanism 1 is driven by the driving device. When the lower roller 121 encounters protrusions, depressions, or other situations, the vibration is transmitted to the vibration-damping mechanism 3. The impact is absorbed by the spring damping seat 31 and the vibration-damping assembly 32, ensuring the stability of the clamping mechanism 2. Furthermore, the upper roller assembly 24 further enhances the stability of the vibration-damping pipeline non-destructive testing crawler as it crawls within the pipeline, enabling the testing device to operate in a stable state. The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A vibration-damping pipeline non-destructive testing crawler, characterized in that, The device includes a moving mechanism (1), a clamping mechanism (2) mounted on the top surface of the moving mechanism (1), and a shock-absorbing mechanism (3) connecting the moving mechanism (1) and the clamping mechanism (2). The moving mechanism (1) includes a moving base (11), a lower roller assembly (12) mounted on the moving base (11), and a driving device for driving the lower roller assembly (12) to rotate. The clamping mechanism (2) includes a supporting base plate (21) and a clamping assembly (22) mounted on the top surface of the supporting base plate (21) for arranging a detection device. There is a shock-absorbing gap between the moving base (11) and the supporting base plate (21) for arranging the shock-absorbing mechanism (3). The shock-absorbing mechanism (3) includes a spring damping seat (31) symmetrically mounted on the top surface of the moving base (11) and a shock-absorbing assembly (32) mounted on the top surface of the moving base (11) and hinged to the supporting base plate (21).

2. The vibration-damping pipeline non-destructive testing crawler according to claim 1, characterized in that, The damping assembly (32) is arranged between the spring damping seats (31). The damping assembly (32) includes two fixed plates (321) mounted on the top surface of the movable base (11) and arranged opposite to each other, a sliding rod (322) connecting the two fixed plates (321), two sliding sleeves (323) slidably mounted on the sliding rods (322), a sliding spring (324) sleeved on the sliding rods (322), and a sliding sleeve connecting the sliding sleeves. (323) and the linkage group of the supporting base plate (21); one end of the sliding spring (324) abuts against the fixed plate (321) and the other end abuts against the sliding sleeve (323), the linkage group includes a hinge seat (325) installed on the bottom surface of the supporting base plate (21) and two connecting rods (326) with one end hinged to the hinge seat (325), and the other end of the connecting rod (326) is hinged to the sliding sleeve (323).

3. The vibration-damping pipeline non-destructive testing crawler according to claim 1, characterized in that, The clamping assembly (22) includes a clamping base (221), two clamping plates (222) slidably mounted on the clamping base (221), a clamping rod (223) connected to the clamping plate (222) and extending in a direction away from the other clamping plate (222), and a clamping spring (224) sleeved on the clamping rod (223); one end of the clamping spring (224) abuts against the clamping plate (222) and the other end abuts against the clamping base (221), the clamping base (221) has a clamping groove (2211) for the clamping plate (222) to slide, and the clamping base (221) has a through hole for the clamping rod (223) to pass through, and the clamping rod (223) has a limiting part (2231) on the side away from the clamping plate (222).

4. The vibration-damping pipeline non-destructive testing crawler according to claim 3, characterized in that, The supporting base plate (21) is provided with mounting columns (23) at both ends of the clamping assembly (22). The mounting column (23) has a sliding groove (231) and an upper roller assembly (24) is installed in the sliding groove (231). The upper roller assembly (24) includes an adjusting rod (241) that is slidably installed in the sliding groove (231), an upper roller (242) connected to the side of the adjusting rod (241) away from the mounting column (23), and a limiting component installed on the mounting column (23) and cooperating with the adjusting rod (241).

5. A vibration-damping pipeline non-destructive testing crawler according to claim 4, characterized in that, The limiting assembly includes a limiting cover (243) mounted on the mounting column (23), a limiting rod (244) slidably mounted on the limiting cover (243), and a limiting spring (245) sleeved on the limiting rod (244); the limiting cover (243) has a sliding chamber (2431), one end of the limiting spring (245) abuts against the sliding chamber (2431) and the other end is connected to the limiting rod (244), the extension direction of the limiting rod (244) is perpendicular to the extension direction of the mounting column (23), and the adjusting rod (241) is provided with limiting holes (2412) spaced apart along the length direction of the adjusting rod (241) for the limiting rod (244) to pass through.

6. A vibration-damping pipeline non-destructive testing crawler according to claim 4, characterized in that, A limiting plate (2411) is provided on the side of the adjusting rod (241) away from the upper roller (242) to prevent the adjusting rod (241) from dislodging from the sliding groove (231).

7. The vibration-damping pipeline non-destructive testing crawler according to claim 1, characterized in that, The movable base (11) has a mounting chamber (111), and the lower roller assembly (12) includes a lower roller (121), a mounting rod (122) for mounting the lower roller (121), and an adjustment assembly mounted in the mounting chamber (111) and cooperating with the mounting rod (122); the adjustment assembly includes a rotating rod (123) arranged perpendicular to the extending direction of the mounting rod (122) and rotatably mounted on the movable base (11), and a mounting bracket mounted on the rotating rod (123). The bevel gear set (124) and the extension rod (125) connecting the bevel gear set (124) and the mounting rod (122) are provided. The mounting rod (122) has an arrangement slot (1222) for arranging the extension rod (125) and the mounting rod (122) has a insertion interface (1223) at the arrangement slot (1222) for inserting the extension rod (125). The mounting rod (122) is threadedly engaged with the extension rod (125) at the insertion interface (1223).

8. A vibration-damping pipeline non-destructive testing crawler according to claim 7, characterized in that, The rotating rod (123) has a rotating portion (1231) extending outside the mounting chamber (111), and the rotating rod (123) is provided with a rotating handle (1232) at the rotating portion (1231).

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