Pipeline interior detection equipment and detection method

Abstract

The invention relates to the technical field of pipeline detection, and particularly discloses pipeline interior detection equipment and a detection method. An adjusting mechanism is jointly installed between the inner walls of the two sides of the adjusting box, detection mechanisms are installed at the two ends of the adjusting box, and dredging mechanisms are installed on the opposite faces of the two detection mechanisms. The adjusting mechanism comprises a positive and negative screw rod, a second bevel gear, a moving frame and an adjusting frame, the positive and negative screw rod is installed between the inner walls of the two sides of the adjusting box through a bearing, and the second bevel gear is installed in the middle of the outer surface of the positive and negative screw rod; according to the invention, the positive and negative screw rods can drive the two moving frames on the positive and negative screw rods to move outwards together through meshing transmission between the conical teeth, so that the positions of the plurality of adjusting frames are adjusted to adapt to pipelines with different diameters, and therefore, the detection mechanism can always keep the central position in the pipelines with different diameters, and the detection accuracy is improved. The detection requirements of pipelines with different diameters are met, and the accuracy of the detection result is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline detection, and particularly relates to an internal pipeline detection device and a detection method. Background Art

[0002] During the operation and maintenance of a sewage treatment plant, the health status of the pipeline system is crucial for the stability and efficiency of the entire treatment process. However, due to the long-term exposure of sewage pipelines to harsh working environments, they are often eroded by sewage, sludge, and chemical agents, and are also affected by various physical factors such as water flow scouring and pressure changes, resulting in various forms of damage and defects inside the pipeline, such as corrosion, wear, cracks, blockages, etc. These damages and defects not only reduce the service life of the pipeline but may also cause serious problems such as leakage and blockage. Therefore, detection equipment is used to detect pipelines.

[0003] In the Chinese patent with the publication number CN220019402U, a detection device for the inside of a pressure pipeline is mentioned. Through the designed servo motor, lead screw, slide bar, rubber sleeve, and second cross plate, the automatic adjustment of the height of the second wheel is realized, so that the detection device can be applied to the detection work inside pressure pipelines with different diameters, making its applicable range wider. At the same time, the designed two groups of sliding blocks and sliding grooves make the second wheel more stable during the lifting process and less likely to deviate.

[0004] However, when this detection equipment is in use, although it can be applied to the detection work inside pressure pipelines with different diameters, it adjusts the position of the second wheel to adapt to the change in pipeline diameter. However, this adjustment method limits the relative position of the first camera and the second camera, making their installation angles and distances fixed in pipelines with different diameters, which may result in the camera's field of view or shooting effect not meeting expectations under certain pipeline diameters. Summary of the Invention

[0005] The purpose of the present invention is to provide an internal pipeline detection device and a detection method to ensure that the camera always shoots centered inside pipelines with different diameters, thereby effectively solving the problem of poor shooting effect caused by the fixed position of the camera.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] An internal pipeline detection device, comprising:

[0008] An adjustment box;

[0009] An adjustment mechanism is commonly installed between the inner walls on both sides of the adjustment box, detection mechanisms are installed at both ends of the adjustment box, and dredging mechanisms are installed on the opposite surfaces of the two detection mechanisms;

[0010] The adjusting mechanism includes a positive and reverse screw rod, a second bevel gear, a moving frame and an adjusting frame. The positive and reverse screw rod is installed between the inner walls on both sides of the adjusting box through bearings. The second bevel gear is installed in the middle of the outer surface of the positive and reverse screw rod. There are two moving frames, and the two moving frames are respectively installed on both sides of the outer surface of the positive and reverse screw rod. There are eight adjusting frames, and the eight adjusting frames are respectively installed on the four upper, lower, front and rear sides of the two moving frames.

[0011] Preferably, protective baffles are installed on the outer surfaces of both dredging mechanisms. Four limiting grooves are respectively opened on both sides of the outer surface of the adjusting box. A driver is installed in the middle of the bottom end of the adjusting box. The output end of the driver penetrates through the bottom inner wall of the adjusting box and is installed with a first bevel gear, and the bottom end of the first bevel gear is installed on the bottom inner wall of the adjusting box through a bearing.

[0012] Preferably, the adjusting frame includes a support rod, an adjusting rod, a double-headed motor and a support wheel. The support rod is installed at the top end of the adjusting box through a connecting seat at the lower part of the outer surface. The adjusting rod is installed on the middle part of the outer wall of the support rod through a connecting seat, and the lower part of the outer surface of the adjusting rod is installed at the top end of the moving frame through a connecting seat. The double-headed motor is installed on the upper part of the outer surface of the support rod through a connecting seat. There are two support wheels, and the two support wheels are respectively installed on the two output ends of the double-headed motor.

[0013] Preferably, an inverted V-shaped structure is formed between the support rod and the adjusting rod. The top surface of the double-headed motor is lower than the top surface of the support wheel. The second bevel gear meshes with the first bevel gear. The moving frame is arranged in a cross-shaped structure, and the outer surface of the moving frame is slidably connected with the corresponding limiting groove.

[0014] Preferably, the detection mechanism includes a detection shell, installation grooves, a positioning mechanism, installation frames, infrared cameras and fill lights. The detection shell is installed at one end of the adjusting box. There are multiple installation grooves, installation frames, infrared cameras and fill lights. Multiple installation grooves are opened on one side of the outer surface of the detection shell. The positioning mechanism is installed between the inner walls on both sides of the detection shell. Multiple installation frames are respectively clamped and installed inside the multiple installation grooves. Multiple infrared cameras are respectively installed on the outer walls of the multiple installation frames. Multiple fill lights are all installed on the other side of the outer surface of the detection shell.

[0015] Preferably, the positioning mechanism includes a moving screw rod, a driving motor, a moving plate and positioning blocks. The moving screw rod is installed between the inner walls on both sides of the detection shell through bearings. The driving motor is installed at one end of the moving screw rod. The moving plate is installed on the outer surface of the moving screw rod. There are multiple positioning blocks, and the multiple positioning blocks are all installed around one end of the moving plate.

[0016] Preferably, the outer wall of the moving plate is in contact with the inner wall of the detection shell, the positioning block is clamped with the mounting bracket, and the mounting bracket is arranged as a convex frame.

[0017] Preferably, the dredging mechanism includes a protective cover, a motor, a dredging drill bit, a chip discharge groove and a cutting knife. The protective cover is installed at the other end of the detection shell, the motor is installed on the inner wall of the protective cover, the dredging drill bit is installed at the other end of the protective cover through a bearing, the chip discharge groove is opened on the outer surface of the dredging drill bit, and a plurality of cutting knives are provided, and a plurality of cutting knives are all installed on one side of the outer surface of the dredging drill bit.

[0018] Preferably, the dredging drill bit is arranged in a conical structure, the chip discharge groove is arranged in a spiral structure, and the cutting edge direction of the cutting knife is consistent with the rotation direction of the dredging drill bit.

[0019] A detection method for an internal pipeline detection device includes the following steps:

[0020] Step 1, adapt to the pipeline: drive the two moving frames on it to move outward by rotating the positive and negative screw rods, so that the adjusting rod pushes the support rod to straighten, so that the outer wall of the support wheel is in contact with the inner wall of the pipeline, so that the detection device can be adjusted according to the size of the pipeline, and it is also ensured that the detection mechanism can always be located at the center of the pipeline to meet the detection of pipelines with different diameters;

[0021] Step 2, detect the pipeline: through a plurality of infrared cameras installed on the detection shell, the state and properties of the pipeline material can be tested or analyzed by using infrared light as an optical means, and the inside of the pipeline with insufficient light can be supplemented with light through a plurality of supplementary lights, which can help improve the effect and image quality of the infrared camera;

[0022] Step 3, replace the camera: start the drive motor to drive the moving screw rod to rotate, and the plurality of positioning blocks can be taken out of the plurality of mounting brackets respectively, so that the infrared camera can be disassembled from the detection shell, which is convenient for disassembling, replacing or overhauling and maintaining the infrared camera;

[0023] Step 4, dredge the pipeline: start the motor to drive the dredging drill bit to rotate, which can dredge the blockage inside the pipeline, and the chip discharge groove can reduce friction, and also helps to keep the dredging drill bit in a straight direction during the dredging process. At the same time, a plurality of cutting knives also rotate with the dredging drill bit, and can more effectively cut and crush the blockage inside the pipeline.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] (1) The present invention provides an adjustment mechanism inside the adjustment box. Through the meshing transmission between bevel gears, the forward and reverse lead screw can drive two moving frames thereon to move outward together, thereby adjusting the positions of multiple adjustment frames to adapt to pipes of different diameters. In this way, the detection mechanism can always maintain a central position inside pipes of different diameters, meeting the detection requirements for pipes of different diameters and ensuring the accuracy of detection results.

[0026] (2) The present invention is provided with detection mechanisms at both ends of the adjustment box. Through multiple infrared cameras, the state and properties of pipeline materials can be tested or analyzed by optical means, thereby achieving a comprehensive detection of the inside of the pipeline. At the same time, the supplementary lighting function of the supplementary light lamp helps to improve the detection effect and image quality of the infrared camera. In addition, the infrared camera is detachable and replaceable, which not only facilitates subsequent maintenance and repair but also saves the usage cost.

[0027] (3) The present invention is provided with a dredging mechanism at the other end of the detection mechanism. When it is found that the inside of the pipeline is blocked, the motor can be started to drive the dredging drill bit to rotate, cleaning the blocked part inside the pipeline to ensure that the pipeline is unobstructed. At the same time, the cutting knife can further crush the blockage inside the pipeline, thereby improving the dredging efficiency of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a perspective view of the present invention;

[0029] Figure 2 is a cross-sectional view of the adjustment box of the present invention;

[0030] Figure 3 is of the present invention Figure 2 an enlarged view of A in;

[0031] Figure 4 is a perspective view of the adjustment mechanism of the present invention;

[0032] Figure 5 is a perspective view of the adjustment frame of the present invention;

[0033] Figure 6 is a perspective view of the detection mechanism of the present invention;

[0034] Figure 7 is a perspective view of the positioning mechanism of the present invention;

[0035] Figure 8 is a cross-sectional view of the dredging mechanism of the present invention;

[0036] In the figure: 1. Adjustment box; 2. Adjustment mechanism; 3. Detection mechanism; 4. Dredging mechanism; 5. Protective baffle; 6. Limit groove; 7. Driver; 8. First bevel gear;

[0037] 21. Positive and negative lead screw; 22. Second bevel gear; 23. Moving frame; 24. Adjusting frame;

[0038] 241. Support rod; 242. Adjusting rod; 243. Double-headed motor; 244. Support wheel;

[0039] 31. Detection shell; 32. Installation groove; 33. Positioning mechanism; 34. Installation frame; 35. Infrared camera; 36. Fill light;

[0040] 331. Moving screw; 332. Driving motor; 333. Moving plate; 334. Positioning block;

[0041] 41. Protective cover; 42. Motor; 43. Drilling bit for dredging; 44. Chip removal groove; 45. Cutting tool. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Embodiment 1:

[0044] Please refer to Figures 1 to 8 As shown, a pipeline internal detection device includes:

[0045] Adjusting box 1;

[0046] An adjusting mechanism 2 is commonly installed between the inner walls on both sides of the adjusting box 1, detection mechanisms 3 are installed at both ends of the adjusting box 1, and dredging mechanisms 4 are installed on the opposite sides of the two detection mechanisms 3;

[0047] The adjusting mechanism 2 includes a positive and negative lead screw 21, a second bevel gear 22, a moving frame 23 and an adjusting frame 24. The positive and negative lead screw 21 is installed between the inner walls on both sides of the adjusting box 1 through bearings. The second bevel gear 22 is installed in the middle of the outer surface of the positive and negative lead screw 21. There are two moving frames 23, and the two moving frames 23 are respectively installed on both sides of the outer surface of the positive and negative lead screw 21. There are eight adjusting frames 24, and the eight adjusting frames 24 are respectively installed on the upper, lower, front and rear four sides of the two moving frames 23.

[0048] From Figures 1 to 5It can be seen that protective baffles 5 are installed on the outer surfaces of both dredging mechanisms 4. Four limiting grooves 6 are provided on both sides of the outer surface of the adjustment box 1. A driver 7 is installed in the middle of the bottom end of the adjustment box 1. The output end of the driver 7 penetrates through the bottom inner wall of the adjustment box 1 and is equipped with a first bevel gear 8, and the bottom end of the first bevel gear 8 is installed on the bottom inner wall of the adjustment box 1 through a bearing;

[0049] The adjustment frame 24 includes a support rod 241, an adjustment rod 242, a double-headed motor 243, and support wheels 244. The support rod 241 is installed at the top end of the adjustment box 1 through a connecting seat at the lower part of its outer surface. The adjustment rod 242 is installed on the middle part of the outer wall of the support rod 241 through a connecting seat, and the lower part of the outer surface of the adjustment rod 242 is installed at the top end of the moving frame 23 through a connecting seat. The double-headed motor 243 is installed on the upper part of the outer surface of the support rod 241 through a connecting seat. There are two support wheels 244, and the two support wheels 244 are respectively installed on the two output ends of the double-headed motor 243.

[0050] As can be seen from the above, first, place the entire detection device inside the sewage pipeline, and then start the driver 7. The driver 7 drives the first bevel gear 8 to rotate. Through the meshing transmission between the first bevel gear 8 and the second bevel gear 22, the forward and reverse lead screw 21 drives the two moving frames 23 thereon to move outward together. At the same time, the limiting grooves 6 guide and limit the moving frames 23, improving the stability of the moving frames 23 during the moving process. Furthermore, the adjustment rod 242 pushes the support rod 241 to straighten, so that the outer surfaces of the support wheels 244 are in close contact with the inner wall of the pipeline, thereby stably supporting the detection device inside the sewage pipeline. Then start the double-headed motor 243 to drive the corresponding two support wheels 244 to rotate, so that the entire device walks and detects inside the sewage pipeline. In this way, the detection mechanism 3 can always maintain the central position inside pipelines with different diameters, meeting the detection requirements for pipelines with different diameters and ensuring the accuracy of the detection results. This design solves the problem that the infrared camera 35 may not be able to capture all the details of the pipeline wall in a pipeline with a smaller diameter, and the infrared camera 35 may be too far away from the pipeline wall in a pipeline with a larger diameter, resulting in blurred images or reduced resolution. It ensures the field of view and shooting effect of the infrared camera 35 and enables the detection device to adaptively adjust according to pipelines with different diameters, improving the flexibility of the detection device.

[0051] Specifically, referring to Figures 1 to 5 As shown, an inverted V-shaped structure is formed between the support rod 241 and the adjustment rod 242. The top surface of the double-headed motor 243 is lower than the top surface of the support wheel 244. The second bevel gear 22 meshes with the first bevel gear 8. The moving frame 23 is set as a cross-shaped structure, and the outer surface of the moving frame 23 is slidably connected to the corresponding limiting groove 6.

[0052] As described above, the support rod 241 and the adjusting rod 242 form a specific mechanical support to increase the stability and flexibility of the structure. This structure helps the adjusting frame 24 to adaptively adjust under different pipe diameters, maintain the stability and balance of the equipment, ensure that the double-headed motor 243 does not interfere with the inner wall of the pipe during operation, and at the same time, the support wheel 244 can closely adhere to the inner wall of the pipe to provide necessary support and guidance, change the direction of power transmission, drive the positive and negative lead screws 21, provide a stable moving path, ensure the smooth sliding of the moving frame 23 in a specific direction, and at the same time, the limit slot 6 limits the moving range of the moving frame 23 to maintain its stability.

[0053] Embodiment 2:

[0054] Reference Figure 6 And Figure 7 As shown, the detection mechanism 3 includes a detection shell 31, an installation groove 32, a positioning mechanism 33, an installation frame 34, an infrared camera 35, and a fill light 36. The detection shell 31 is installed at one end of the adjustment box 1. There are multiple installation grooves 32, installation frames 34, infrared cameras 35, and fill lights 36. Multiple installation grooves 32 are all opened on one side of the outer surface of the detection shell 31. The positioning mechanism 33 is installed between the inner walls on both sides of the detection shell 31. Multiple installation frames 34 are respectively snap-fitted and installed inside the multiple installation grooves 32. Multiple infrared cameras 35 are respectively installed on the outer walls of the multiple installation frames 34. Multiple fill lights 36 are all installed on the other side of the outer surface of the detection shell 31;

[0055] The positioning mechanism 33 includes a moving screw 331, a driving motor 332, a moving plate 333, and a positioning block 334. The moving screw 331 is installed between the inner walls on both sides of the detection shell 31 through bearings. The driving motor 332 is installed at one end of the moving screw 331. The moving plate 333 is installed on the outer surface of the moving screw 331. There are multiple positioning blocks 334, and multiple positioning blocks 334 are all installed around one end of the moving plate 333.

[0056] As described above, through multiple infrared cameras 35, the state and properties of the sewage pipeline can be detected or analyzed by optical means, capturing minute details inside the pipeline, such as cracks, corrosion spots, etc., providing data support for the accurate assessment of the pipeline state, thereby achieving a comprehensive detection of the inside of the pipeline. At the same time, the fill light function of multiple fill lights 36 helps to improve the detection effect and image quality of the infrared camera 35. In addition, the infrared camera 35 is detachable and replaceable. By starting the driving motor 332 to drive the moving screw 331 to rotate, the moving plate 333 drives multiple positioning blocks 334 to move stably, so that multiple positioning blocks 334 can be easily taken out from multiple installation frames 34, and then the installation frame 34 and the infrared camera 35 can be disassembled from the installation groove 32, facilitating subsequent maintenance and repair, and also saving the use cost.

[0057] Preferably, referring to Figure 6 and Figure 7 As shown, the outer wall of the moving plate 333 contacts the inner wall of the detection shell 31, the positioning block 334 is clamped with the mounting bracket 34, and the mounting bracket 34 is arranged as a convex frame.

[0058] As can be seen from the above, it is used to keep the position of the moving plate 333 stable in the detection shell 31, improve the stability of the moving plate 333, enable the positioning block 334 to play a positioning role in the position of the mounting bracket 34, improve the stability of the mounting bracket 34, provide sufficient strength and stability, and at the same time facilitate the connection and fixation of the mounting bracket 34 with other components.

[0059] Embodiment Three:

[0060] Referring to Figure 8 As shown, the dredging mechanism 4 includes a protective cover 41, a motor 42, a dredging drill bit 43, a chip discharge groove 44 and a cutting knife 45. The protective cover 41 is installed at the other end of the detection shell 31, the motor 42 is installed on the inner wall of the protective cover 41, the dredging drill bit 43 is installed at the other end of the protective cover 41 through a bearing, the chip discharge groove 44 is opened on the outer surface of the dredging drill bit 43, and a plurality of cutting knives 45 are provided and are all installed on one side of the outer surface of the dredging drill bit 43.

[0061] As can be seen from the above, when the detection device walks in the pipeline and touches the blockage, the motor 42 can be started to drive the dredging drill bit 43 to rotate, clean the blocked part inside the sewage pipeline. During the process of the dredging drill bit 43 rotating to dredge the pipeline, the spiral chip discharge groove 44 on it plays a role in discharging chips, ensuring the smooth progress of the drilling process and reducing the friction of the dredging drill bit 43 during the drilling process. This not only helps to reduce the wear of the dredging drill bit 43, but also improves the cutting efficiency and makes the drilling process smoother. At the same time, when the dredging drill bit 43 rotates, it also drives the plurality of cutting knives 45 installed on it to rotate together, further crushing the blockage inside the pipeline, thereby improving the pipeline dredging efficiency and ensuring the smoothness inside the pipeline.

[0062] Preferably, referring to Figure 8 As shown, the dredging drill bit 43 is arranged as a conical structure, the chip discharge groove 44 is arranged as a spiral structure, and the cutting edge direction of the cutting knife 45 is the same as the rotation direction of the dredging drill bit 43.

[0063] As can be seen from the above, the conical structure helps the dredging drill bit 43 to be smoothly advanced in the pipeline, and at the same time increases the cutting area and improves the dredging efficiency. The spiral structure helps to smoothly discharge the cut chips along the chip discharge groove 44, and at the same time reduces friction, ensuring that the cutting knife 45 can smoothly cut the blockage inside the pipeline when the dredging drill bit 43 rotates, improving the dredging effect.

[0064] Embodiment Four:

[0065] Reference Figures 1 to 8 As shown, a detection method for an internal pipeline detection device includes the following steps:

[0066] Step 1: Adapt to the pipeline: Rotate the positive and negative screw rod 21 to drive the two moving brackets 23 on it to move outward, so that the adjusting rod 242 pushes the support rod 241 to straighten, so that the outer wall of the support wheel 244 contacts the inner wall of the pipeline, so that the detection device can be adjusted according to the size of the pipeline, and it is also ensured that the detection mechanism 3 can always be located at the center of the pipeline to meet the detection of pipelines with different diameters;

[0067] Step 2: Detect the pipeline: Through multiple infrared cameras 35 installed on the detection shell 31, the state and properties of the pipeline material can be tested or analyzed by using infrared light as an optical means, and multiple supplementary lights 36 can supplement light to the inside of the pipeline with insufficient light, which can help improve the effect and image quality of the infrared camera 35;

[0068] Step 3: Replace the camera: Start the driving motor 332 to drive the moving screw rod 331 to rotate, and the multiple positioning blocks 334 can be taken out from the multiple mounting brackets 34 respectively, so that the infrared camera 35 can be disassembled from the detection shell 31, which is convenient for disassembling, replacing or overhauling and maintaining the infrared camera 35;

[0069] Step 4: Clear the pipeline: Start the motor 42 to drive the clearing drill bit 43 to rotate, which can clear the blockage inside the pipeline, and the chip removal groove 44 can reduce friction, and it also helps to keep the clearing drill bit 43 in a straight direction during the clearing process. At the same time, the multiple cutting knives 45 also rotate with the clearing drill bit 43, which can more effectively cut and crush the blockage inside the pipeline.

[0070] Application example:

[0071] This design is mainly applied to environments that require detailed detection and necessary clearing operations inside pipelines, especially those scenarios involving pipelines of various diameters and complex and changeable internal conditions of pipelines, such as urban drainage systems, industrial pipeline systems, and underground utility tunnels. In cities, the sewage pipeline system is intricate, with diverse pipeline diameters. And due to long-term operation, a large amount of silt, garbage, etc. may accumulate inside the pipeline, resulting in pipeline blockage or damage. In industries such as petroleum, chemical, and electric power, the pipeline system undertakes important tasks such as transporting fluids and gases. These pipelines are often large in diameter, and the internal medium may cause corrosion or wear to the pipeline;

[0072] Through the setting of the adjustment mechanism 2, the detection device can be adaptively adjusted according to pipes of different diameters, ensuring that the detection mechanism 3 always remains at the center position of the pipe, thereby improving the accuracy of the detection results. By setting the detection mechanism 3, the interior of the pipe is comprehensively detected by means of high-precision optics, capturing minute details inside the pipe, such as cracks, corrosion spots, etc., providing data support for the accurate assessment of the pipe condition. At the same time, by setting the dredging mechanism 4, in case of pipe blockage found during the detection process, the dredging mechanism 4 can be used to clean the blocked area, ensuring the unobstructed flow of the pipe. This design can significantly improve the efficiency and quality of pipe detection and dredging. Through precise detection means, potential problems inside the pipe can be discovered and addressed in a timely manner, avoiding accidents and ensuring the safe progress of production and life. At the same time, this design also has a high degree of flexibility and adaptability, capable of coping with various complex and changeable pipe environments, providing strong support for the maintenance and management of the pipe system.

[0073] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline internal detection device, characterized in that: include: Regulating box (1); An adjusting mechanism (2) is installed between the inner walls of both sides of the adjusting box (1), a detecting mechanism (3) is installed at both ends of the adjusting box (1), and a clearing mechanism (4) is installed on the opposite sides of the two detecting mechanisms (3); The adjusting mechanism (2) comprises a forward and reverse screw rod (21), a second bevel gear (22), a movable frame (23) and an adjusting frame (24); the forward and reverse screw rod (21) is mounted between the inner walls of the adjusting box (1) via a bearing; the second bevel gear (22) is mounted on the middle of the outer surface of the forward and reverse screw rod (21); two movable frames (23) are provided, and the two movable frames (23) are respectively mounted on the two sides of the outer surface of the forward and reverse screw rod (21); eight adjusting frames (24) are provided, and the eight adjusting frames (24) are respectively mounted on the upper, lower, front and rear four side surfaces of the two movable frames (23).

2. A pipeline internal detection device according to claim 1, characterized in that: The outer surfaces of the two dredging mechanisms (4) are both provided with protective baffles (5), the outer surfaces of the regulating box (1) are both provided with four limit grooves (6), a driver (7) is installed in the middle of the bottom end of the regulating box (1), the output end of the driver (7) passes through the bottom inner wall of the regulating box (1) and is provided with a first bevel gear (8), and the bottom end of the first bevel gear (8) is installed on the bottom inner wall of the regulating box (1) through a bearing.

3. A pipeline internal detection device according to claim 2, characterized in that: The adjustment frame (24) comprises a support rod (241), an adjustment rod (242), a double-headed motor (243) and a support wheel (244); the support rod (241) is mounted on the top of the adjustment box (1) through a connection seat at the lower portion of the outer surface; the adjustment rod (242) is mounted on the middle portion of the outer wall of the support rod (241) through the connection seat, and the lower portion of the outer surface of the adjustment rod (242) is mounted on the top of the moving frame (23) through the connection seat; the double-headed motor (243) is mounted on the upper portion of the outer surface of the support rod (241) through the connection seat; two support wheels (244) are provided, and the two support wheels (244) are respectively mounted on the two output ends of the double-headed motor (243).

4. A pipeline internal detection device according to claim 3, characterized in that: The support rod (241) and the adjustment rod (242) form an I-shaped structure, the top end surface of the double-headed motor (243) is lower than the top end surface of the support wheel (244), the second bevel gear (22) is meshed with the first bevel gear (8), the moving frame (23) is arranged as a cross-shaped structure, and the outer surface of the moving frame (23) is slidably connected to the corresponding limit groove (6).

5. The pipeline internal detection device according to claim 1, characterized in that: The detection mechanism (3) comprises a detection shell (31), a mounting groove (32), a positioning mechanism (33), a mounting frame (34), an infrared camera (35) and a fill light (36); the detection shell (31) is mounted on one end of the adjustment box (1); a plurality of the mounting groove (32), the mounting frame (34), the infrared camera (35) and the fill light (36) are provided; the plurality of mounting grooves (32) are each provided on one side of the outer surface of the detection shell (31); the positioning mechanism (33) is mounted between the inner walls on both sides of the detection shell (31); the plurality of mounting frames (34) are respectively mounted in the interior of the plurality of mounting grooves (32); the plurality of infrared cameras (35) are respectively mounted on the outer walls of the plurality of mounting frames (34); and the plurality of fill lights (36) are each mounted on the other side of the outer surface of the detection shell (31).

6. A pipeline internal detection device according to claim 5, characterized in that: The positioning mechanism (33) comprises a moving screw (331), a driving motor (332), a moving plate (333) and a positioning block (334); the moving screw (331) is installed between the inner walls of both sides of the detection shell (31) via a bearing; the driving motor (332) is installed at one end of the moving screw (331); the moving plate (333) is installed on the outer surface of the moving screw (331); a plurality of positioning blocks (334) are provided, and the plurality of positioning blocks (334) are all installed around one end of the moving plate (333).

7. A pipeline internal detection device according to claim 6, characterized in that: The outer wall of the movable plate (333) contacts the inner wall of the detection shell (31), the positioning block (334) is clamped with the mounting frame (34), and the mounting frame (34) is configured as a convex frame.

8. The pipeline internal detection device according to claim 1, characterized in that: The dredging mechanism (4) comprises a protective cover (41), a motor (42), a dredging drill bit (43), a chip removal groove (44) and a cutting knife (45); the protective cover (41) is mounted on the other end of the detection shell (31); the motor (42) is mounted on the inner wall of the protective cover (41); the dredging drill bit (43) is mounted on the other end of the protective cover (41) via a bearing; the chip removal groove (44) is provided on the outer surface of the dredging drill bit (43); a plurality of cutting knives (45) are provided, and the plurality of cutting knives (45) are all mounted on one side of the outer surface of the dredging drill bit (43).

9. A pipeline internal detection device according to claim 8, characterized in that: The unblocking drill bit (43) is configured as a conical structure, the chip removal groove (44) is configured as a spiral structure, and the blade direction of the cutting knife (45) is consistent with the rotation direction of the unblocking drill bit (43).

10. A detection method for a pipeline internal detection device, applicable to a pipeline internal detection device according to claims 1 to 9, characterized in that: The following steps are involved: Step 1, adapting to the pipeline: by rotating the forward and reverse screw rods (21), the two movable frames (23) thereon are driven to move outward, so that the adjustment rod (242) pushes the support rod (241) to straighten, so that the outer wall of the support wheel (244) contacts the inner wall of the pipeline, so that the detection device can be adjusted according to the size of the pipeline, and also ensure that the detection mechanism (3) can always be located at the center of the pipeline, so as to meet the detection of pipelines with different diameters; Step 2: Detecting the pipeline: By installing a plurality of infrared cameras (35) on the detection shell (31), the state and properties of the pipeline material can be tested or analyzed by using infrared light as an optical means, and the interior of the pipeline with insufficient light can be supplemented with light by using a plurality of fill lights (36), which can help improve the effect and image quality of the infrared camera (35); Step 3: Replace the camera: Start the driving motor (332) to drive the moving screw (331) to rotate, and the plurality of positioning blocks (334) can be taken out from the plurality of mounting frames (34) respectively, so that the infrared camera (35) can be removed from the detection shell (31), which is convenient for disassembly, replacement, inspection and maintenance of the infrared camera (35); Step 4, unblocking the pipeline: starting the motor (42) to drive the unblocking drill bit (43) to rotate, which can unblock the blockage inside the pipeline. The chip removal groove (44) can reduce friction and help keep the unblocking drill bit (43) in an upright direction during the unblocking process. At the same time, the multiple cutting knives (45) also rotate together with the unblocking drill bit (43), which can more effectively cut and crush the blockage in the pipeline.

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