Feeding and propelling device for magnetic flux leakage detector in pipeline

Abstract

The utility model provides a putting and propelling device of a magnetic flux leakage detector in a pipeline, which comprises two groups of bottom plates, two groups of adjusting structures, a bearing plate, a propelling structure, a propelling plate, a pipeline body and a detector body, the upper surfaces of the two groups of bottom plates are respectively provided with a group of adjusting structures, the bearing plate is arranged above the two groups of adjusting structures, and the propelling plate is arranged above the bearing plate. A propelling structure is arranged on the upper surface of the bearing plate, a propelling plate is arranged above the propelling structure, a pipeline body is arranged at one end of the propelling plate, and a detector body is arranged at the end, close to the propelling plate, of the pipeline body. According to the utility model, the pushing structure is arranged, the rotating rod rotates to drive the two groups of gears to rotate, and the two groups of gears are meshed with the racks in the two groups of guide rails when rotating, so that the pushing plate slides along the upper surfaces of the two groups of guide rails, and then the detector body in the placing groove in the upper surface of the pushing plate is pushed to enter the pipeline body; the putting speed of the detector is effectively improved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline detection equipment placement, in particular to a placement and propulsion device for a magnetic leakage detector in a pipeline. Background Art

[0002] A pipeline magnetic flux leakage detector is a device used to detect magnetic flux leakage in pipelines. It usually consists of the following parts:

[0003] Sensor: used to detect changes in the magnetic field around the pipeline, which can be based on the Hall effect, magnetoresistance effect or other magnetic sensitive elements.

[0004] Signal processing unit: used to receive the signals collected by the sensor and perform amplification, filtering and digital conversion to convert the signals into a recognizable form.

[0005] Display device: displays the data processed by the signal processing unit, usually in the form of digital display or graphical display.

[0006] Alarm device: Once magnetic leakage material is detected in the pipeline, the magnetic leakage detector will trigger the alarm device, emit sound and light signals or alarm through the control system.

[0007] Control unit: used to control the operation of the entire magnetic flux leakage detection system, including parameter setting, calibration, alarm setting and other functions.

[0008] The working principle of the magnetic flux leakage detector is based on the change of the magnetic field in the pipeline. If external magnetic materials enter the pipeline, the magnetic field distribution will be affected and thus detected by the magnetic flux leakage detector. This type of detector is of great significance for timely detection of pipeline leaks or magnetic impurities during the process of pipeline transportation of liquids or gases.

[0009] When users drop the detector into the pipeline, multiple users are required to lift the detector and aim it at the pipeline entrance to drop it. Since the detector is heavy, it will shake when users drop it, and the shaking detector will collide with the inner wall of the pipeline entrance, causing damage to the detector parts. At the same time, as the detector continues to enter the pipeline, the number of users lifting and placing the detector continues to decrease, so that a small number of users need to bear the weight of the part of the detector that has not entered the pipeline, which reduces the speed of dropping the detector and reduces work efficiency. Utility Model Content

[0010] In order to solve the above technical problems, the utility model provides a delivery and propulsion device for a magnetic flux leakage detector in a pipeline.

[0011] The utility model provides a pipeline internal magnetic leakage detector delivery and propulsion device comprising: a bottom plate, an adjustment structure, a bearing plate, a propulsion structure, a propulsion plate, a pipeline body and a detector body, wherein the bottom plate is provided with two groups, and the upper surfaces of the two groups of bottom plates are respectively provided with a group of adjustment structures, the adjustment structure comprises a folding rod and a rotating shaft, the folding rod is provided with two groups, the two groups of folding rods are staggered, the middle outer surfaces of the two groups of folding rods are provided with through holes, the inner parts of the through holes in the middle and outer surfaces of the two groups of folding rods are rotatably connected with a rotating shaft, a bearing plate is provided above the two groups of adjustment structures, and a propulsion structure is provided on the upper surface of the bearing plate. The propulsion structure includes guide rails, rotating rods, gears and racks. There are two groups of guide rails. Through grooves are provided on both sides of the two groups of guide rails. A rotating rod is provided between the two groups of guide rails. Both ends of the rotating rod pass through the through grooves on the outer surfaces of the two groups of guide rails and extend to the side where the two groups of guide rails are away from each other. A group of gears are fixedly connected to the outer surfaces of both ends of the rotating rod, and racks are meshed under the gears. The bottoms of the two groups of racks are fixedly connected to the inner bottoms of the two groups of guide rails. A propulsion plate is provided above the propulsion structure, and a pipe body is provided at one end of the propulsion plate. A detector body is provided at one end of the pipe body close to the propulsion plate.

[0012] Preferably, the upper surfaces of the two groups of base plates are fixedly connected with a fixing seat and a slide rail, a through hole is provided at one end of the slide rail, a sliding block is slidingly arranged inside the slide rail, a threaded hole is provided at one end of the sliding block, a threaded rod is threadedly connected inside the threaded hole at one end of the sliding block, one end of the threaded rod is rotatably connected to the inner wall of the slide rail, the other end of the threaded rod passes through the through hole at one end of the slide rail and extends to the outer surface of the slide rail, a first servo motor is provided at one end of the threaded rod extending to the outer surface of the slide rail, a power output end of the first servo motor is fixedly connected to the threaded rod located at one end of the outer surface of the slide rail, and the bottom of the first servo motor is fixedly connected to the upper surface of the base plate.

[0013] Preferably, the lower surfaces on both sides of the supporting plate are fixedly connected with a fixing seat and a slide rail respectively, and translation blocks are slidably provided inside the two sets of slide rails respectively.

[0014] Preferably, the two groups of folding rods in the two groups of adjustment structures are respectively provided with through holes on the side surfaces at both ends, and a group of connecting rods are rotatably connected inside the through holes on the side surfaces at both ends of the two groups of folding rods, wherein one end of the connecting rod inside the through holes on the lower end side surfaces of one group of folding rods is fixedly connected to the side surface of the sliding block, and one end of the connecting rod inside the through holes on the upper end side surfaces of the folding rods is fixedly connected to the side surface of the fixed seat on the lower surface of the supporting plate, and one end of the connecting rod inside the through holes on the lower end side surfaces of the other group of folding rods is fixedly connected to the side surface of the fixed seat on the upper end of the base plate, and one end of the connecting rod inside the through holes on the upper end side surfaces of the folding rods is fixedly connected to the side surface of the translation block inside the slide rail on the lower surface of the supporting plate.

[0015] Preferably, the lower surface of the push plate is slidably connected to the upper surfaces of the two sets of guide rails, the lower surfaces of the two sets of guide rails are fixedly connected to the upper surface of the supporting plate, the upper surface of the push plate is fixedly connected with a placement groove, the detector body is placed inside the placement groove, the lower surface of the push plate is fixedly connected with two sets of connecting plates, and the lower end side surfaces of the two sets of connecting plates are provided with through holes.

[0016] Preferably, the rotating rod is rotatably connected to the inside of the through holes on the side surfaces of the lower ends of the two sets of connecting plates, the outer surface of the rotating rod is fixedly connected to a driven bevel gear, one side of the driven bevel gear is engaged with an active bevel gear, a second servo motor is provided at one end of the active bevel gear, the power output end of the second servo motor is fixedly connected to one end of the active bevel gear, and the upper surface of the second servo motor is fixedly connected to the lower surface of the propulsion plate.

[0017] Compared with related technologies, the pipeline magnetic leakage detector delivery and propulsion device provided by the present invention has the following beneficial effects:

[0018] The cam is connected with the sliding block of the sliding block by the threaded hole on the one end of the sliding block, so that the sliding block slides along the inner part of the slide rail on the upper surface of the base, and the upper end of the folding rod is pushed by the side surface connecting rod to the fixing seat on the lower surface of the carrier plate. At the same time, the upper end of the folding rod moves through the connecting rod and rotates between the rotating shaft in the middle through hole and the other set of folding rods, so that the upper end of the other set of folding rods pushes the translation block to slide along the inner part of the slide rail on the lower surface of the carrier plate through the connecting rod. The lower end of the folding rod rotates on the side surface of the fixing seat on the upper surface of the base plate through the connecting rod, thereby pushing the carrier plate to rise, driving the detector body to rise to the position of the pipeline body entrance, effectively improving the stability of the detector, and effectively preventing the detector from shaking and colliding with the inner wall of the pipeline entrance to cause damage to the detector components.

[0019] By providing a propulsion structure, the second servo motor is started, and the power output end of the second servo motor rotates to drive the active bevel gear to rotate. When the active bevel gear rotates, it engages with the driven bevel gear to rotate, thereby causing the driven bevel gear to drive the rotating rod to rotate inside the through hole on the lower end side surface of the two sets of connecting plates. When the rotating rod rotates, it drives the two sets of gears to rotate. When the two sets of gears rotate, they engage with the racks inside the two sets of guide rails, causing the propulsion plate to slide along the upper surfaces of the two sets of guide rails, thereby pushing the detector body inside the placement groove on the upper surface of the propulsion plate into the interior of the pipeline body, effectively improving the placement speed of the detector and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic structural diagram of a preferred embodiment of a delivery and propulsion device for a magnetic flux leakage detector in a pipeline provided by the present invention;

[0021] Figure 2 This is a schematic diagram of the exploded structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the exploded structure of the base plate, adjustment structure and bearing plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the exploded structure of the load-bearing plate, the propulsion structure and the propulsion plate of the present invention.

[0024] Numbers in the figure: 1. Base plate; 2. Adjustment structure; 3. Folding rod; 4. Rotating shaft; 5. Loading plate; 6. Propulsion structure; 7. Guide rail; 8. Rotating rod; 9. Gear; 10. Rack; 11. Propulsion plate; 12. Pipe body; 13. Detector body; 14. Fixed seat; 15. Slide rail; 16. Sliding block; 17. Threaded rod; 18. First servo motor; 19. Translation block; 20. Connecting rod; 21. Placement slot; 22. Connecting plate; 23. Driven bevel gear; 24. Active bevel gear; 25. Second servo motor. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and implementation examples.

[0026] Please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a delivery and propulsion device for a magnetic flux leakage detector in a pipeline provided by the present invention; Figure 2 This is a schematic diagram of the exploded structure of the utility model; Figure 3 This is a schematic diagram of the exploded structure of the base plate, adjustment structure and bearing plate of the present invention; Figure 4This is a schematic diagram of the exploded structure of the load-bearing plate, propulsion structure, and propulsion plate of the present invention. It includes: a base plate 1, an adjustment structure 2, a load-bearing plate 5, a propulsion structure 6, a propulsion plate 11, a pipe body 12, and a detector body 13. The base plate 1 is provided with two groups, and the upper surface of each of the two groups of base plates 1 is provided with a group of adjustment structures 2. The adjustment structure 2 includes a folding rod 3 and a rotating shaft 4. There are two groups of folding rods 3, and the two groups of folding rods 3 are staggered. The middle outer surface of each group of folding rods 3 is provided with a through hole. The inner through hole of the outer surface of the two groups of folding rods 3 is rotatably connected to the rotating shaft 4. A load-bearing plate 5 is provided above the two groups of adjustment structures 2. The adjustment structure 2 facilitates adjusting the height of the load-bearing plate 5. The upper surface of the load-bearing plate 5 is provided with a propulsion structure 6. The propulsion structure 6 includes a guide rail 7, a rotating rod 8, a gear 9, and a rack 10. There are two groups of guide rails 7, and through grooves are opened on both sides of the two groups of guide rails 7. A rotating rod 8 is provided between the two groups of guide rails 7. The two ends of the rotating rod 8 respectively pass through the through grooves on the outer surfaces of the two groups of guide rails 7 and extend to the side where the two groups of guide rails 7 are away from each other. A group of gears 9 are fixedly connected to the outer surfaces of the two ends of the rotating rod 8. A rack 10 is engaged under the gear 9. The bottom of the two groups of racks 10 is fixedly connected to the bottom of the two groups of guide rails 7. A propulsion plate 11 is provided above the propulsion structure 6. The propulsion structure 6 facilitates the movement of the propulsion plate 11. A pipe body 12 is provided at one end of the propulsion plate 11. A detector body 13 is provided at one end of the pipe body 12 close to the propulsion plate 11. The detector body 13 facilitates the inspection of the pipe body 12.

[0027] In the specific implementation process, Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the upper surfaces of the two groups of bottom plates 1 are fixedly connected with a fixing seat 14 and a slide rail 15, a through hole is provided at one end of the slide rail 15, a sliding block 16 is provided inside the slide rail 15 for sliding movement, a threaded hole is provided at one end of the slide block 16, a threaded rod 17 is threadedly connected to the threaded hole at one end of the slide block 16, one end of the threaded rod 17 is rotatably connected to the inner wall of the slide rail 15, the other end of the threaded rod 17 passes through the through hole at one end of the slide rail 15 and extends to the outer surface of the slide rail 15, the threaded rod 17 can rotate inside the through hole at one end of the slide rail 15, and the threaded rod 17 is extended to the outer surface of the slide rail 15. A servo motor 18, the power output end of the first servo motor 18 is fixedly connected to the threaded rod 17 located at one end of the outer surface of the slide rail 15, the bottom of the first servo motor 18 is fixedly connected to the upper surface of the base plate 1, the first servo motor 18 is electrically connected to the external power supply, and the first servo motor 18 is started. The power output end of the first servo motor 18 rotates, driving the threaded rod 17 to rotate inside the through hole at one end of the slide rail 15 on the upper surface of the base plate 1. While the threaded rod 17 rotates, it is threadedly connected to the threaded hole at one end of the sliding block 16, so that the sliding block 16 slides along the inside of the slide rail 15 on the upper surface of the base.

[0028] Among them, the lower surfaces of both sides of the supporting plate 5 are fixedly connected with a fixing seat 14 and a slide rail 15 respectively, and the two sets of slide rails 15 are respectively slidably provided with a translation block 19 inside. The translation block 19 can slide inside the slide rail 15 on the lower surface of the supporting plate 5.

[0029] Among them, the two groups of folding rods 3 in the two groups of adjustment structures 2 are respectively provided with through holes on the side surfaces at both ends, and a group of connecting rods 20 are rotatably connected inside the through holes on the side surfaces at both ends of the two groups of folding rods 3. One end of the connecting rod 20 inside the through hole on the lower end side surface of one group of folding rods 3 is fixedly connected to the side surface of the sliding block 16, and one end of the connecting rod 20 inside the through hole on the upper end side surface of the folding rod 3 is fixedly connected to the side surface of the fixing seat 14 on the lower surface of the supporting plate 5. One end of the connecting rod 20 inside the through hole on the lower end side surface of the other group of folding rods 3 is fixedly connected to the side surface of the fixing seat 14 on the upper surface of the bottom plate 1, and one end of the connecting rod 20 inside the through hole on the upper end side surface of the folding rod 3 is fixedly connected to the supporting plate 5 The side surface of the translation block 19 inside the lower surface slide rail 15, the sliding block 16 slides and pushes the lower end of one group of folding rods 3 to move through the side surface connecting rod 20. At the same time, the upper end of the folding rod 3 rotates on the side surface of the fixed seat 14 on the lower surface of the supporting plate 5 through the connecting rod 20. When the lower end of the folding rod 3 moves, it rotates between the rotating shaft 4 inside the middle through hole and the other group of folding rods 3, and makes the upper end of the other group of folding rods 3 push the translation block 19 to slide along the inside of the slide rail 15 on the lower surface of the supporting plate 5 through the connecting rod 20. The lower end of the folding rod 3 rotates on the side surface of the fixed seat 14 on the upper surface of the bottom plate 1 through the connecting rod 20, thereby pushing the supporting plate 5 to rise.

[0030] Among them, the lower surface of the push plate 11 is slidably connected to the upper surface of the two groups of guide rails 7, and the lower surfaces of the two groups of guide rails 7 are fixedly connected to the upper surface of the supporting plate 5. The push plate 11 can slide on the upper surface of the two groups of guide rails 7. The upper surface of the push plate 11 is fixedly connected with a placement groove 21, and the detector body 13 is placed inside the placement groove 21. The placement groove 21 is convenient for placing the detector body 13. The lower surface of the push plate 11 is fixedly connected with two groups of connecting plates 22, and the lower end side surfaces of the two groups of connecting plates 22 are provided with through holes.

[0031] Among them, the rotating rod 8 is rotatably connected to the inside of the through holes on the lower end side surfaces of the two groups of connecting plates 22, and the rotating rod 8 can rotate inside the through holes on the lower end side surfaces of the two groups of connecting plates 22. The outer surface of the rotating rod 8 is fixedly connected to the driven bevel gear 23, and the active bevel gear 24 is engaged with one side of the driven bevel gear 23. A second servo motor 25 is provided at one end of the active bevel gear 24. The power output end of the second servo motor 25 is fixedly connected to one end of the active bevel gear 24. The upper surface of the second servo motor 25 is fixedly connected to the lower surface of the propulsion plate 11. The second servo motor 25 is electrically connected to an external power supply. When the second servo motor 25 is started, the power output end of the second servo motor 25 rotates to drive the active bevel gear 24 to rotate. When the active bevel gear 24 rotates, it engages the driven bevel gear 23 to rotate. When the driven bevel gear 23 rotates, it can drive the rotating rod 8 to rotate.

[0032] The working principle provided by the utility model is as follows: the operator first places the detector body 13 inside the placement groove 21, the operator adjusts the height of the detector body 13 according to the height of the pipeline entrance, the operator starts the first servo motor 18, and the power output end of the first servo motor 18 rotates to drive the threaded rod 17 to rotate inside the through hole at one end of the slide rail 15 on the upper surface of the base plate 1. While the threaded rod 17 rotates, it is threadedly connected to the threaded hole at one end of the sliding block 16, so that the sliding block 16 slides along the inside of the slide rail 15 on the upper surface of the base. While the sliding block 16 slides, it pushes the lower end of one group of folding rods 3 to move through the side surface connecting rod 20. At the same time, the upper end of the folding rod 3 rotates on the side surface of the fixed seat 14 on the lower surface of the bearing plate 5 through the connecting rod 20. While the lower end of the folding rod 3 moves, it rotates between the rotating shaft 4 inside the middle through hole and the other group of folding rods 3, and makes the upper end of the other group of folding rods 3 push the translation block 19 along the The support plate 5 slides inside the slide rail 15 on the lower surface of the support plate 5, and the lower end of the folding rod 3 rotates on the side surface of the fixed seat 14 on the upper surface of the bottom plate 1 through the connecting rod 20, thereby pushing the support plate 5 to rise, driving the detector body 13 to rise to the entrance position of the pipeline body 12. When the detector body 13 needs to be placed inside the pipeline body 12, the operator starts the second servo motor 25. The power output end of the second servo motor 25 rotates to drive the active bevel gear 24 to rotate. When the active bevel gear 24 rotates, it engages with the driven bevel gear 23 to rotate, thereby causing the driven bevel gear 23 to drive the rotating rod 8 to rotate inside the through hole on the lower end side surface of the two sets of connecting plates 22. When the rotating rod 8 rotates, it drives the two sets of gears 9 to rotate. When the two sets of gears 9 rotate, they engage with the racks 10 inside the two sets of guide rails 7, causing the propulsion plate 11 to slide along the upper surfaces of the two sets of guide rails 7, thereby pushing the detector body 13 inside the placement groove 21 on the upper surface of the propulsion plate 11 into the interior of the pipeline body 12.

[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A delivery and propulsion device for a pipeline magnetic leakage detector, comprising: A base plate (1), an adjustment structure (2), a bearing plate (5), a propulsion structure (6), a propulsion plate (11), a pipeline body (12) and a detector body (13), characterized in that the base plate (1) is provided with two groups, and the upper surfaces of the two groups of base plates (1) are respectively provided with a group of adjustment structures (2), the adjustment structure (2) comprises a folding rod (3) and a rotating shaft (4), the folding rod (3) is provided with two groups, the two groups of folding rods (3) are arranged in an alternating manner, the middle outer surfaces of the two groups of folding rods (3) are provided with through holes, the inner parts of the through holes in the middle outer surfaces of the two groups of folding rods (3) are rotatably connected with the rotating shaft (4), a bearing plate (5) is provided above the two groups of adjustment structures (2), the upper surface of the bearing plate (5) is provided with a propulsion structure (6), the propulsion structure (6) comprises a guide rail (7), A rotating rod (8), a gear (9) and a rack (10), two groups of guide rails (7) are provided, both sides of the two groups of guide rails (7) are provided with through grooves, a rotating rod (8) is provided between the two groups of guide rails (7), both ends of the rotating rod (8) respectively pass through the through grooves on the outer surfaces of both sides of the two groups of guide rails (7) and extend to the side of the two groups of guide rails (7) away from each other, both ends of the rotating rod (8) are fixedly connected to the outer surfaces of a group of gears (9) respectively, the gears (9) are meshed with racks (10) below, the bottoms of the two groups of racks (10) are fixedly connected to the inner bottoms of the two groups of guide rails (7), a propulsion plate (11) is provided above the propulsion structure (6), a pipe body (12) is provided at one end of the propulsion plate (11), and a detector body (13) is provided at one end of the pipe body (12) close to the propulsion plate (11).

2. The device for launching and propulsing a magnetic flux leakage detector in a pipeline according to claim 1, characterized in that: The upper surfaces of the two groups of base plates (1) are fixedly connected with a fixing seat (14) and a slide rail (15); a through hole is provided at one end of the slide rail (15); a sliding block (16) is slidably arranged inside the slide rail (15); a threaded hole is provided at one end of the slide block (16); a threaded rod (17) is threadedly connected inside the threaded hole at one end of the slide block (16); one end of the threaded rod (17) is rotatably connected to the inner wall of the slide rail (15); the other end of the threaded rod (17) passes through the through hole at one end of the slide rail (15) and extends to the outer surface of the slide rail (15); a first servo motor (18) is arranged at one end of the threaded rod (17) extending to the outer surface of the slide rail (15); a power output end of the first servo motor (18) is fixedly connected to one end of the threaded rod (17) located on the outer surface of the slide rail (15); and the bottom of the first servo motor (18) is fixedly connected to the upper surface of the base plate (1).

3. The device for launching and propulsing a pipeline magnetic flux leakage detector according to claim 1, characterized in that: The lower surfaces of both sides of the bearing plate (5) are respectively fixedly connected with a fixing seat (14) and a slide rail (15), and translation blocks (19) are respectively slidably arranged inside the two sets of slide rails (15).

4. The device for launching and propulsing a pipeline magnetic flux leakage detector according to claim 1, characterized in that: The two groups of folding rods (3) in the two groups of adjustment structures (2) are respectively provided with through holes on the side surfaces at both ends, and a group of connecting rods (20) are rotatably connected inside the through holes on the side surfaces at both ends of the two groups of folding rods (3). One end of the connecting rod (20) inside the through holes on the lower side surfaces of one group of folding rods (3) is fixedly connected to the side surface of the sliding block (16), and one end of the connecting rod (20) inside the through holes on the upper side surfaces of the folding rods (3) is fixedly connected to the side surface of the fixing seat (14) on the lower surface of the bearing plate (5). One end of the connecting rod (20) inside the through holes on the lower side surfaces of the other group of folding rods (3) is fixedly connected to the side surface of the fixing seat (14) on the upper surface of the bottom plate (1), and one end of the connecting rod (20) inside the through holes on the upper side surfaces of the folding rods (3) is fixedly connected to the side surface of the translation block (19) inside the slide rail (15) on the lower surface of the bearing plate (5).

5. The device for launching and propulsing a pipeline magnetic flux leakage detector according to claim 1, characterized in that: The lower surface of the push plate (11) is slidably connected to the upper surfaces of the two sets of guide rails (7), the lower surfaces of the two sets of guide rails (7) are fixedly connected to the upper surface of the carrier plate (5), the upper surface of the push plate (11) is fixedly connected with a placement groove (21), the detector body (13) is placed inside the placement groove (21), the lower surface of the push plate (11) is fixedly connected with two sets of connecting plates (22), and the lower end side surfaces of the two sets of connecting plates (22) are provided with through holes.

6. The device for launching and propulsing a pipeline magnetic flux leakage detector according to claim 1, characterized in that: The rotating rod (8) is rotatably connected to the inside of the through holes on the side surfaces of the lower ends of the two groups of connecting plates (22); a driven bevel gear (23) is fixedly connected to the outer surface of the rotating rod (8); a driving bevel gear (24) is meshed with one side of the driven bevel gear (23); a second servo motor (25) is provided at one end of the driving bevel gear (24); a power output end of the second servo motor (25) is fixedly connected to one end of the driving bevel gear (24); and an upper surface of the second servo motor (25) is fixedly connected to a lower surface of the propulsion plate (11).

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