Pipeline wall change detection method

Abstract

The invention discloses a pipeline wall change detection method in the technical field of pipeline detection. The method comprises the following steps: step 1, clamping a moving part above a to-be-detected pipeline; step 2, driving the moving part to move on the to-be-detected pipeline to adjust a detection position; step 3, detecting the wall thickness of the pipeline by a detection device on the moving part; the moving part and the detection device in the first step, the second step and the third step comprise a mounting frame and a detection part, mounting shafts are rotationally mounted on the two sides of the lower end of the mounting frame correspondingly, clamping frames are fixedly mounted on the mounting shafts, multiple sets of lower connecting shafts are rotationally mounted at the lower ends of the clamping frames, and driving wheels are fixedly mounted on the lower connecting shafts. One end of each mounting shaft is provided with a locking mechanism, the locking mechanisms can lock the positions of the mounting shafts and the clamping frame, the detection piece is slidably connected to the mounting frame, the ultrasonic thickness detection equipment can automatically move on the pipeline, the detection piece can rotate for angle adjustment, and the detection range is wider and more comprehensive.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline detection, and in particular to a pipeline wall change detection method. Background Art

[0002] Engineering surveying is a general term for all surveying and mapping work in engineering construction, including various surveying work carried out in the survey, design, construction and management stages of engineering construction. According to its work sequence and nature, engineering surveying is divided into engineering control surveying and topographic surveying in the survey and design stage, construction surveying and equipment installation surveying in the construction stage, and completion surveying and management stage. The measurement of pipeline's later use is also an important task in engineering measurement.

[0003] Most existing pipeline wall thickness detections are done with caliper measurements. Caliper measurements require manual readings with large errors, and most can only detect the wall thickness at the pipe port. The detection range is limited, and it is not possible to detect multiple sections of the pipeline in the full range. Ordinary ultrasonic detection equipment requires manual assistance to adjust the detection points, has limited operating efficiency, and is prone to missing points during movement, making the detection data incomplete. Summary of the invention

[0004] The technical problem of the present invention is to provide a pipeline variable wall detection method to provide an ultrasonic thickness detection device that can automatically move on the pipeline, and the detection part can be rotated to adjust the angle, so that the detection range covers a wider and more comprehensive range.

[0005] To achieve the above object, the present invention provides the following technical solution: a pipeline wall change detection method, comprising the following steps: Step 1: Connect the moving part to the pipe to be tested: Step 2: driving the moving part to move on the pipeline to be inspected to adjust the inspection position; Step 3: The detection equipment on the moving part detects the pipe wall thickness; The movable part and the detection equipment in the above steps 1, 2 and 3 include a mounting frame and a detection part, mounting shafts are rotatably mounted on both sides of the lower end of the mounting frame, a clamping frame is fixedly mounted on the mounting shaft, a plurality of lower connecting shafts are rotatably mounted on the lower end of the clamping frame, a driving wheel is fixedly mounted on the lower connecting shaft, a locking mechanism is arranged at one end of the mounting shaft, the locking mechanism can lock the position of the mounting shaft and the clamping frame, the detection part is slidably connected to the mounting frame, an ultrasonic thickness gauge is fixedly mounted on the bottom of the detection part, an angle control part is arranged between the detection part and the mounting frame, the angle control part can adjust the angle of the detection part as the detection part moves on the mounting frame, and ensure that the lower surface of the detection part can be in close contact with the surface of the pipeline to be detected.

[0006] As a further solution of the present invention, the angle control member includes an inner connecting plate, the inner connecting plate is fixedly mounted on the upper end of the detection member, a rotating shaft is fixedly mounted on the upper end of the inner connecting plate, a lifting seat is rotatably mounted on the rotating shaft, driven gears are fixedly mounted on both ends of the rotating shaft, a transition gear is rotatably mounted on the lifting seat, a fixed tooth plate is fixedly mounted on the lower surface of the mounting frame, the fixed tooth plate is meshed with the transition gear, and the transition gear is meshed with the driven gear.

[0007] As a further solution of the present invention, the locking mechanism includes a side fixing frame, the side fixing frame is fixedly mounted on one side of the mounting frame, an active rod is rotatably mounted on the mounting frame, an active disk is fixedly mounted on the active rod, a toggle rod is symmetrically mounted on a side of the active disk away from the active rod, a limiting frame is fixedly mounted on the lower end of the side fixing frame, and a locking member is fixedly mounted on the limiting frame.

[0008] As a further solution of the present invention, a threaded rod is threadedly connected to the lifting seat, and the threaded rod is rotatably mounted on the upper end of the mounting frame. A limiting groove is provided on the mounting frame at a position corresponding to the threaded rod, and the lifting seat is slidably connected in the limiting groove. An upper gear is fixedly mounted on one end of the threaded rod, and a lower gear is rotatably mounted on one side of the mounting frame, the lower gear meshes with the upper gear, and a distance sensor is fixedly mounted on the upper end of the lifting seat.

[0009] As a further solution of the present invention, a driven disk is rotatably installed in the locking member, and the driven disk is fixedly connected to the mounting shaft, and an intermediate column is fixedly installed on the side of the driven disk close to the active disk, and limiting plates are provided on both sides of the intermediate column. A movable member is slidably connected in the limiting plate, and an embedding groove is provided on the movable member. An elastic member is provided between the movable member and the intermediate column, and a clamping member is fixedly installed on the end of the movable member away from the intermediate column. A ratchet is provided on the edge of the locking member, and the ratchet is provided with an upper and lower layers in opposite directions. The clamping member is respectively meshed with the upper and lower layers of the ratchet, and the toggle rod is embedded in the embedding groove.

[0010] As a further solution of the present invention, an upper positioning rod is rotatably installed on the mounting frame corresponding to the upper side of the side fixing frame, a transmission member is arranged between the upper positioning rod and the active rod, a reverse gear is fixedly installed on one side of the upper positioning rod, an intermediate shaft is rotatably installed on one side of the mounting frame corresponding to the reverse gear, an intermediate gear is fixedly installed on the intermediate shaft, the intermediate gear is meshed with the reverse gear, and a group of the upper positioning rod and the intermediate gear away from the reverse gear are fixedly installed with same-direction gears, and a transmission chain is connected to the outer shell of the same-direction gear.

[0011] As a further solution of the present invention, a limiting gear is fixedly installed on the lower end of the lower connecting shaft, and a limiting chain is connected to the outer sleeve of the limiting gear. A rotating motor is fixedly installed on one side of the clamping frame, and the output end of the rotating motor is fixedly connected to the edge of the lower connecting shaft, and an anti-sliding block is provided on the outer surface of the driving wheel.

[0012] As a further solution of the present invention, a pressure sensor is fixedly mounted on the lower surface of the detection member, a bidirectional motor is fixedly mounted on the mounting frame, and an output end of the bidirectional motor is fixedly connected to the lower gear.

[0013] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the mounting frame is placed above the detection pipe, and then the mounting shaft is driven to rotate by the locking mechanism. The rotation of the mounting shaft makes the driving wheel at the lower end of the clamping frame approach and abut against the outer wall of the detection pipe, thereby fixing the device on the pipe surface, and the detection piece on the mounting frame moves down and abuts against the pipe surface to detect the wall thickness. After a section of the pipe is detected, the position of the mounting frame on the pipe can be adjusted by rotating the driving wheel, so that the device can automatically detect the wall thickness of the entire length of the pipe, avoiding the trouble of manually holding and changing the position of the detection equipment to detect the wall thickness of multiple sections of the pipe, thereby improving the detection efficiency.

[0014] After the detection part moves downward to detect the wall thickness of the upper end of the pipeline in the present invention, the detection part can move horizontally on the mounting frame to detect both sides of the upper end of the detection pipeline. After the horizontal movement, the lower surface of the detection part is always biased toward the outer wall of the pipeline under the action of the angle control part. Then the detection part moves downward to detect the wall thickness of the entire circumference of the same section of the pipeline, so that the wall thickness detection is more comprehensive, the amount of detection data obtained is increased, and the distribution range of the data is improved, thereby ensuring the accuracy of the detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A partial schematic diagram of the structure at A in the middle; Figure 3 For the present invention Figure 1 A partial schematic diagram of the structure at B in the middle; Figure 4 This is a schematic diagram of the structure of the present invention from a top view perspective; Figure 5 For the present invention Figure 4 A partial schematic diagram of the structure at C in the middle; Figure 6 For the present invention Figure 4 A partial schematic diagram of the structure at D in the middle; Figure 7 It is a schematic diagram of the internal structure of the locking member in the present invention; Figure 8 The present invention is a flow chart of the detection method.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1. Mounting frame; 2. Clamping frame; 3. Mounting shaft; 4. Threaded rod; 5. Upper gear; 6. Lower gear; 7. Lower connecting shaft; 8. Driving wheel; 9. Detection part; 10. Ultrasonic thickness gauge; 11. Lifting seat; 12. Distance sensor; 13. Inner connecting plate; 14. Rotating shaft; 15. Fixed gear plate; 16. Transition gear; 17. Driven gear; 18. Limiting gear; 19. Limiting chain; 20. Side fixing frame; 21. Transmission member; 22. Upper positioning rod; 23. Active rod; 24. Active disk; 25. Limiting frame; 26. Locking member; 27. Limiting groove; 28. Co-directional gear; 29. ​​Intermediate gear; 30. Reverse gear; 31. Intermediate shaft; 32. Driven disk; 33. Intermediate column; 34. Toggle rod; 35. Limiting plate; 36. Movable member; 37. Clamping member; 38. Ratchet; 39. Elastic member; 40. Embedded groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 8 The present invention provides a technical solution: a pipeline wall change detection method, comprising the following steps: Step 1: Connect the moving part to the pipe to be tested: Step 2: driving the moving part to move on the pipeline to be inspected to adjust the inspection position; Step 3: The detection equipment on the moving part detects the pipe wall thickness; The moving parts and detection equipment in the above steps 1, 2 and 3 include a mounting frame 1 and a detection member 9. The mounting shafts 3 are rotatably installed on both sides of the lower end of the mounting frame 1, and the clamping frame 2 is fixedly installed on the mounting shaft 3. The lower end of the clamping frame 2 is rotatably installed with multiple sets of lower connecting shafts 7, and the lower connecting shafts 7 are fixedly installed with driving wheels 8. One end of the mounting shaft 3 is provided with a locking mechanism, which can lock the positions of the mounting shaft 3 and the clamping frame 2. The detection member 9 is slidably connected to the mounting frame 1, and an ultrasonic thickness gauge 10 is fixedly installed at the bottom of the detection member 9. An angle control member is provided between the detection member 9 and the mounting frame 1. The angle control member can adjust the angle of the detection member 9 as the detection member 9 moves on the mounting frame 1 to ensure that the lower surface of the detection member 9 can be in close contact with the surface of the pipeline to be detected.

[0020] During operation, the mounting frame 1 is placed above the detection pipe in the present invention, and then the mounting shaft 3 is driven to rotate through the locking mechanism. The mounting shaft 3 is rotated so that the driving wheel 8 at the lower end of the clamping frame 2 is close to and abuts against the outer wall of the detection pipe (the angle between the clamping frame 2 and the mounting frame 1 can be adjusted, so that the clamping frame 2 can clamp pipes of various diameters. The motor drives the intermediate shaft 31 to rotate. The intermediate shaft 31 rotates through the same direction gear 28 and the transmission chain to drive the upper positioning rod 22 on one side to rotate in the same direction. At the same time, the upper positioning rod 22 on one side is driven to rotate in the opposite direction through the intermediate gear 29 and the reverse gear 30. The upper positioning rod 22 drives the active rod 23 to rotate through the transmission member 21, thereby driving the active rods 23 on both sides to rotate relatively. The active rod 23 rotates and drives the mounting shaft 3 to rotate relatively through the locking member, thereby driving the clamping frame 2 The device is fixed on the surface of the pipeline, and the detection member 9 on the mounting frame 1 moves down and contacts the pipeline surface to detect the wall thickness. After the detection of a section of pipeline is completed, the position of the mounting frame 1 on the pipeline can be adjusted by rotating the driving wheel 8 (the rotating motor drives the lower connecting shaft 7 at the edge to rotate, and the lower connecting shaft 7 rotates through the limit gear 18 and the limit chain 19 to drive multiple groups of lower connecting shafts 7 to rotate at the same time, and the lower connecting shaft 7 rotates to drive the driving wheel 8 to rotate, and the driving wheel 8 rotates to drive the clamping frame 2 and the mounting frame 1 to move on the surface of the detection pipeline), so that the device can automatically detect the wall thickness of the entire length of the pipeline, avoiding the trouble of manually holding and changing the position of the detection equipment to detect the wall thickness of multiple sections of pipelines, and improving the detection efficiency. In addition, after the detection member 9 moves downward to detect the wall thickness of the upper end of the pipeline in the present invention, the detection member 9 can move horizontally on the mounting frame 1 to detect both sides of the upper end of the detection pipeline. After the horizontal movement, the lower surface of the detection member 9 is always biased toward the outer wall of the pipeline under the action of the angle control member (the lifting seat 11 moves downward to drive the detection member 9 to move downward and contact the pipeline surface, and then the ultrasonic thickness gauge 10 performs thickness detection on it. After the detection of the highest or lowest point of the pipeline is completed, the threaded rod 4 rotates to drive the lifting seat 11 to move, so that the detection member 9 moves to both sides of the pipeline. During the movement, the horizontal and vertical transition gears 16 and The fixed tooth plates 15 are mutually clustered, thereby driving the transition gear 16 to rotate, the transition gear 16 rotates to drive the driven gear 17 to rotate, the driven gear 17 rotates to drive the rotating shaft 14 to rotate, the rotating shaft 14 rotates to drive the detection member 9 to tilt toward the lower surface of the pipeline, and then the lifting seat 11 drives the detection member 9 to move downward, and continues to make the lower surface of the detection member 9 contact the pipeline surface), and then the detection member 9 moves downward to perform wall thickness detection on the entire circumference of the same section of the pipeline, so that the wall thickness detection is more comprehensive, the amount of detection data obtained is increased, and the distribution range of the data is improved, ensuring the accuracy of the detection data.

[0021] In the present invention, the mounting frame 1 is placed above the detection pipe, and then the mounting shaft 3 is driven to rotate by the locking mechanism. The rotation of the mounting shaft 3 makes the driving wheel 8 at the lower end of the clamping frame 2 close to the outer wall of the detection pipe, so that the device is fixed on the surface of the pipe, and the detection member 9 on the mounting frame 1 moves down to contact the surface of the pipe to detect the wall thickness. After the detection of a section of the pipe is completed, the position of the mounting frame 1 on the pipe can be adjusted by rotating the driving wheel 8, so that the device can automatically detect the wall thickness of the entire length of the pipe, avoiding the trouble of manually holding and changing the position of the detection equipment to detect the wall thickness of multiple sections of the pipe, thereby improving the detection efficiency.

[0022] After the detection member 9 in the present invention moves downward to detect the wall thickness of the upper end of the pipeline, the detection member 9 can move horizontally on the mounting frame 1 to detect both sides of the upper end of the detection pipeline. After the horizontal movement, the lower surface of the detection member 9 is always biased toward the outer wall of the pipeline under the action of the angle control member. Then the detection member 9 moves downward to detect the wall thickness of the entire circumference of the same section of the pipeline, so that the wall thickness detection is more comprehensive, the amount of detection data obtained is increased, and the distribution range of the data is improved, thereby ensuring the accuracy of the detection data.

[0023] As a further solution of the present invention, the angle control member 1 includes an inner connecting plate 13, which is fixedly mounted on the upper end of the detection member 9, and a rotating shaft 14 is fixedly mounted on the upper end of the inner connecting plate 13, and a lifting seat 11 is rotatably mounted on the rotating shaft 14, and driven gears 17 are fixedly mounted on both ends of the rotating shaft 14, and a transition gear 16 is rotatably mounted on the lifting seat 11, and a fixed tooth plate 15 is fixedly mounted on the lower surface of the mounting frame 1, and the fixed tooth plate 15 is meshed with the transition gear 16, and the transition gear 16 is meshed with the driven gear 17.

[0024] During operation, the lifting seat 11 moves downward to drive the detection member 9 to move downward and contact the surface of the pipeline, and then an ultrasonic thickness gauge 10 is used to detect the thickness of the pipeline. After the highest or lowest point of the pipeline is detected, the threaded rod 4 rotates to drive the lifting seat 11 to move, so that the detection member 9 moves to both sides of the pipeline (the bidirectional motor drives the lower gear to rotate, the lower gear rotation drives the upper gear meshing with it to rotate, the upper gear rotation drives the threaded rod to rotate, the threaded rod rotation interacts with the lifting seat to drive the lifting seat to move), and during the movement process, the horizontal and vertical transition gears 16 and the fixed tooth plate 15 transmit to each other, thereby driving the transition gear 16 to rotate, the transition gear 16 rotates to drive the driven gear 17 to rotate, the driven gear 17 rotates to drive the rotating shaft 14 to rotate, and the rotating shaft 14 rotates to drive the detection member 9 to tilt toward the lower surface of the pipeline in the direction of the pipeline, and then the lifting seat 11 drives the detection member 9 to move downward, and continues to make the lower surface of the detection member 9 contact the surface of the pipeline. When the lifting seat 11 moves to the middle position of the mounting frame 1, the lower surface of the detection member 9 remains horizontal again.

[0025] As a further solution of the present invention, the locking mechanism includes a side fixing frame 20, which is fixedly mounted on one side of the mounting frame 1, an active rod 23 is rotatably mounted on the mounting frame 1, an active disk 24 is fixedly mounted on the active rod 23, a toggle rod 34 is symmetrically mounted on the side of the active disk 24 away from the active rod 23, a limit frame 25 is fixedly mounted on the lower end of the side fixing frame 20, and a locking member 26 is fixedly mounted on the limit frame 25.

[0026] During operation, the active rod 23 rotates and drives the installation shaft 3 to rotate relatively through the locking member (the motor drives the intermediate shaft 31 to rotate, and the intermediate shaft 31 rotates and drives the upper positioning rod 22 on one side to rotate in the same direction through the same-direction gear 28 and the transmission chain, and at the same time drives the upper positioning rod 22 on one side to rotate in the opposite direction through the intermediate gear 29 and the reverse gear 30, and the upper positioning rod 22 drives the active rod 23 to rotate through the transmission member 21, thereby driving the active rods 23 on both sides to rotate relatively), thereby driving the clamping frame 2 to approach the pipeline to be inspected, so that the driving wheel 8 at the lower end of the clamping member contacts the surface of the pipeline, and the locking member can lock the position of the installation shaft 3 (the active rod The rotation of the active disk 23 drives the active disk 24 to rotate, and the rotation of the active disk 24 drives the toggle rod 34 to rotate. The toggle rod 34 rotates to squeeze the embedding groove 40 of the movable part 36, so that the clamping part 37 is disengaged from the ratchet 38, and then the rotation of the active disk 24 can drive the driven disk 32 to rotate through the toggle rod 34, and the rotation of the driven disk 32 drives the installation shaft 3 to rotate. When the active rod 23 stops rotating, the squeezing effect of the toggle rod 34 on the embedding groove 40 disappears, so that the clamping part 37 is re-embedded in the ratchet 38, thereby locking the position of the installation shaft 3, thereby ensuring the stability of the position of the clamping frame 2).

[0027] As a further solution of the present invention, a threaded rod 4 is threadedly connected to the lifting seat 11, and the threaded rod 4 is rotatably installed on the upper end of the mounting frame 1. A limiting groove 27 is provided on the mounting frame 1 at a position corresponding to the threaded rod 4. The lifting seat 11 is slidably connected in the limiting groove 27, an upper gear 5 is fixedly installed on one end of the threaded rod 4, a lower gear 6 is rotatably installed on one side of the mounting frame 1, and the lower gear 6 is meshed with the upper gear 5. A distance sensor 12 is fixedly installed on the upper end of the lifting seat 11.

[0028] During operation, the bidirectional motor drives the lower gear 6 to rotate, and the rotation of the lower gear 6 drives the upper gear 5 meshing therewith to rotate, and the rotation of the upper gear 5 drives the threaded rod 4 to rotate, and the rotation of the threaded rod 4 interacts with the lifting seat 11 to drive the lifting seat 11 to move.

[0029] As a further solution of the present invention, a driven disk 32 is rotatably installed in the locking member 26, and the driven disk 32 is fixedly connected to the mounting shaft 3. An intermediate column 33 is fixedly installed on the side of the driven disk 32 close to the active disk 24. Limiting plates 35 are provided on both sides of the intermediate column 33. A movable member 36 is slidably connected in the limiting plate 35. An embedding groove 40 is provided on the movable member 36. An elastic member 39 is provided between the movable member 36 and the intermediate column 33. A clamping member 37 is fixedly installed on the end of the movable member 36 away from the intermediate column 33. A ratchet 38 is provided on the edge of the locking member 26. The ratchet 38 is provided with an upper and lower layers in opposite directions. The clamping member 37 is respectively engaged with the upper and lower layers of ratchet 38, and the toggle rod 34 is embedded in the embedding groove 40.

[0030] During operation, the active rod 23 rotates to drive the active disk 24 to rotate, and the active disk 24 rotates to drive the toggle rod 34 to rotate. The toggle rod 34 rotates to squeeze the embedding groove 40 of the movable part 36, so that the clamping part 37 is disengaged from the ratchet 38, and then the active disk 24 can rotate to drive the driven disk 32 to rotate through the toggle rod 34, and the driven disk 32 rotates to drive the installation shaft 3 to rotate. When the active rod 23 stops rotating, the squeezing effect of the toggle rod 34 on the embedding groove 40 disappears, so that the clamping part 37 is re-embedded in the ratchet 38, thereby locking the position of the installation shaft 3, thereby ensuring the stability of the position of the clamping frame 2.

[0031] As a further solution of the present invention, an upper positioning rod 22 is rotatably installed above the corresponding side fixing frame 20 on the mounting frame 1, a transmission member 21 is arranged between the upper positioning rod 22 and the active rod 23, a reverse gear 30 is fixedly installed on one side of the upper positioning rod 22, an intermediate shaft 31 is rotatably installed on one side of the mounting frame 1 corresponding to the reverse gear 30, an intermediate gear 29 is fixedly installed on the intermediate shaft 31, the intermediate gear 29 is meshed with the reverse gear 30, and a group of upper positioning rods 22 and intermediate gears 29 away from the reverse gear 30 are fixedly installed with the same direction gears 28, and a transmission chain is connected to the outer cover of the same direction gears 28.

[0032] During operation, the motor drives the intermediate shaft 31 to rotate, and the intermediate shaft 31 drives the upper positioning rod 22 on one side to rotate in the same direction through the same-direction gear 28 and the transmission chain. At the same time, the upper positioning rod 22 on one side is driven to rotate in the opposite direction through the intermediate gear 29 and the reverse gear 30. The upper positioning rod 22 drives the active rod 23 to rotate through the transmission member 21, and then drives the active rods 23 on both sides to rotate relative to each other.

[0033] As a further solution of the present invention, a limit gear 18 is fixedly installed at the lower end of the lower connecting shaft 7, and a limit chain 19 is connected to the outer outer surface of the limit gear 18. A rotating motor is fixedly installed on one side of the clamping frame 2, and the output end of the rotating motor is fixedly connected to the edge of the lower connecting shaft 7, and an anti-sliding block is provided on the outer surface of the driving wheel 8.

[0034] During operation, the rotating motor drives the lower connecting shaft 7 at the edge to rotate. The rotation of the lower connecting shaft 7 drives multiple groups of lower connecting shafts 7 to rotate simultaneously through the limit gear 18 and the limit chain 19. The rotation of the lower connecting shaft 7 drives the driving wheel 8 to rotate, and the rotation of the driving wheel 8 drives the clamping frame 2 and the mounting frame 1 to move on the surface of the detection pipeline.

[0035] As a further solution of the present invention, a pressure sensor is fixedly mounted on the lower surface of the detection member 9 , a bidirectional motor is fixedly mounted on the mounting frame 1 , and an output end of the bidirectional motor is fixedly connected to the lower gear 6 .

[0036] During operation, the bidirectional motor drives the lower gear to rotate, and the rotation of the lower gear drives the upper gear meshing with it to rotate.

Claims

1. A pipeline wall change detection method, comprising the following steps: Step 1: Connect the moving part to the pipe to be tested: Step 2: driving the moving part to move on the pipeline to be inspected to adjust the inspection position; Step 3: The detection equipment on the moving part detects the pipe wall thickness; The moving part and the detection device in the above steps 1, 2 and 3 comprise a mounting frame (1) and a detection member (9), characterized in that: mounting shafts (3) are rotatably mounted on both sides of the lower end of the mounting frame (1), a clamping frame (2) is fixedly mounted on the mounting shaft (3), a plurality of lower connecting shafts (7) are rotatably mounted on the lower end of the clamping frame (2), a driving wheel (8) is fixedly mounted on the lower connecting shaft (7), a locking mechanism is arranged at one end of each mounting shaft (3), and the locking mechanism can lock the position of the mounting shaft (3) and the clamping frame (2), the detection member (9) is slidably connected to the mounting frame (1), an ultrasonic thickness gauge (10) is fixedly mounted on the bottom of the detection member (9), and an angle control member is arranged between the detection member (9) and the mounting frame (1), and the angle control member can adjust the angle of the detection member (9) as the detection member (9) moves on the mounting frame (1), so as to ensure that the lower surface of the detection member (9) can be in close contact with the surface of the pipeline to be detected.

2. A pipeline wall change detection method according to claim 1, characterized in that: The angle control member (1) comprises an inner connecting plate (13), the inner connecting plate (13) being fixedly mounted on the upper end of the detection member (9), a rotating shaft (14) being fixedly mounted on the upper end of the inner connecting plate (13), a lifting seat (11) being rotatably mounted on the rotating shaft (14), a driven gear (17) being fixedly mounted on both ends of the rotating shaft (14), a transition gear (16) being rotatably mounted on the lifting seat (11), a fixed tooth plate (15) being fixedly mounted on the lower surface of the mounting frame (1), the fixed tooth plate (15) being meshed with the transition gear (16), and the transition gear (16) being meshed with the driven gear (17).

3. A pipeline wall change detection method according to claim 2, characterized in that: The locking mechanism comprises a side fixing frame (20), the side fixing frame (20) being fixedly mounted on one side of the mounting frame (1), an active rod (23) being rotatably mounted on the mounting frame (1), an active disk (24) being fixedly mounted on the active rod (23), a toggle rod (34) being symmetrically mounted on a side of the active disk (24) away from the active rod (23), a limit frame (25) being fixedly mounted on the lower end of the side fixing frame (20), and a locking member (26) being fixedly mounted on the limit frame (25).

4. A pipeline wall change detection method according to claim 3, characterized in that: A threaded rod (4) is threadedly connected to the lifting seat (11), and the threaded rod (4) is rotatably mounted on the upper end of the mounting frame (1). A limiting groove (27) is provided on the mounting frame (1) at a position corresponding to the threaded rod (4), and the lifting seat (11) is slidably connected in the limiting groove (27). An upper gear (5) is fixedly mounted on one end of the threaded rod (4), and a lower gear (6) is rotatably mounted on one side of the mounting frame (1), and the lower gear (6) meshes with the upper gear (5). A distance sensor (12) is fixedly mounted on the upper end of the lifting seat (11).

5. A pipeline wall change detection method according to claim 4, characterized in that: A driven disk (32) is rotatably mounted in the locking member (26), the driven disk (32) being fixedly connected to the mounting shaft (3), an intermediate column (33) being fixedly mounted on a side of the driven disk (32) close to the active disk (24), limiting plates (35) being provided on both sides of the intermediate column (33), a movable member (36) being slidably connected in the limiting plates (35), an embedding groove (40) being provided on the movable member (36), an elastic member (39) being provided between the movable member (36) and the intermediate column (33), a clamping member (37) being fixedly mounted on one end of the movable member (36) away from the intermediate column (33), a ratchet (38) being provided on the edge of the locking member (26), the ratchet (38) being provided with an upper and lower layer in opposite directions, the clamping member (37) being respectively engaged with the upper and lower layers of the ratchet (38), and the toggle rod (34) being embedded in the embedding groove (40).

6. A pipeline wall change detection method according to claim 5, characterized in that: An upper positioning rod (22) is rotatably mounted on the mounting frame (1) above the corresponding side fixing frame (20), a transmission member (21) is provided between the upper positioning rod (22) and the active rod (23), a reverse gear (30) is fixedly mounted on one side of the upper positioning rod (22), an intermediate shaft (31) is rotatably mounted on the mounting frame (1) on one side corresponding to the reverse gear (30), an intermediate gear (29) is fixedly mounted on the intermediate shaft (31), the intermediate gear (29) is meshed with the reverse gear (30), and a same-direction gear (28) is fixedly mounted on a group of the upper positioning rod (22) and the intermediate gear (29) away from the reverse gear (30), and a transmission chain is connected to the outer shell of the same-direction gear (28).

7. A pipeline wall change detection method according to claim 6, characterized in that: A limit gear (18) is fixedly mounted on the lower end of the lower connecting shaft (7), and a limit chain (19) is connected to the outer surface of the limit gear (18). A rotating motor is fixedly mounted on one side of the clamping frame (2), and the output end of the rotating motor is fixedly connected to the edge of the lower connecting shaft (7). An anti-sliding block is provided on the outer surface of the driving wheel (8).

8. A pipeline wall change detection method according to claim 7, characterized in that: A pressure sensor is fixedly mounted on the lower surface of the detection member (9), a bidirectional motor is fixedly mounted on the mounting frame (1), and an output end of the bidirectional motor is fixedly connected to the lower gear (6).

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