Adjustable rotary eddy current probe detection device

Abstract

The utility model relates to an adjustable rotating eddy current probe detection device, which belongs to the technical field of nondestructive testing and comprises a tailstock, a rotating shaft is rotatably connected onto the tailstock, and one end of the rotating shaft is rotatably connected with a headstock; a walking motor is arranged on the tailstock; the tailstock and the headstock are each provided with a walking wheel assembly. The rotating shaft is sleeved with a sliding block, and the sliding block is movably arranged on the rotating shaft in a clamped mode and located between the tailstock and the headstock. The rotating shaft is sleeved with a limiting spring. An electric slip ring assembly is arranged on the tailstock; a detection assembly is arranged on the electric slip ring assembly and the slide block; the detection assembly comprises an eddy current probe module; one end of the first connecting rod is rotatably connected with the eddy current probe module, and the other end is rotatably connected with the slider; one end of the second connecting rod is rotatably connected with the eddy current probe module, and the other end is rotatably connected with the electric slip ring assembly. The device can cope with a pipeline with the diameter of 50-100 mm, can comprehensively detect the inner wall of the pipeline, can adapt to protruding obstacles, and prevents the eddy current probe module from being damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of non-destructive testing, and in particular relates to an adjustable rotating eddy current probe testing device. Background Art

[0002] With the development of intelligent detection equipment, non-destructive testing of pipelines has become increasingly intelligent. Currently, there is a type of pipeline that needs to be non-destructively tested, and its pipe size is Φ50-Φ100cm.

[0003] The existing detection method is to install an eddy current probe on a robot and inspect the above pipeline. This method has the following disadvantages:

[0004] Traditional robots can only move the eddy current probe in a straight line within the pipeline, thus performing non-destructive testing on a certain linear area of ​​the pipeline, but cannot perform non-destructive testing on a circular area of ​​the pipeline. This results in incomplete non-destructive testing of pipelines, and it is easy to miss areas.

[0005] Because pipelines have been in service for a long time, there are inevitably obstacles on their inner walls. When the eddy current probe passes through an obstacle, it cannot adapt to the raised obstacle and is prone to hitting the obstacle, causing damage to the eddy current probe. Utility Model Content

[0006] The adjustable rotating eddy current probe detection device of the utility model is used to solve the above problems.

[0007] The utility model discloses an adjustable rotating eddy current probe detection device, comprising a tailstock, a rotating shaft being rotatably connected to the tailstock, and a headstock being rotatably connected to the end of the rotating shaft away from the tailstock; a driving motor for rotating the rotating shaft is provided on the tailstock; and a set of traveling wheel assemblies for moving the detection device are provided on both the tailstock and the headstock.

[0008] A slider is sleeved on the rotating shaft, which is movably clamped on the rotating shaft. The slider can move along the axis of the rotating shaft and is located between the tailstock and the headstock. A limiting spring is sleeved on the rotating shaft, which is always in a compressed state and is located between the headstock and the slider.

[0009] The tailstock is provided with an electric slip ring assembly; the electric slip ring assembly and the slider are provided with a detection assembly, which includes:

[0010] Eddy current probe module;

[0011] Connecting rod 1, one end of which is rotatably connected to the eddy current probe module, and the other end of which is rotatably connected to the slider;

[0012] One end of the connecting rod is rotatably connected to the eddy current probe module, and the other end is rotatably connected to the electric slip ring assembly.

[0013] Furthermore, the electric slip ring assembly comprises:

[0014] The collar is fixed to the tailstock and cannot conduct electricity;

[0015] A plurality of conductive components are arranged on the collar; the conductive components include:

[0016] a plurality of bracket rods fixed to the collar;

[0017] The conductive ring is fixedly sleeved on the support rod; the axis of the conductive ring coincides with the axis of the rotating shaft;

[0018] The movable ring is movably mounted on the conductive ring and can move along the conductive ring;

[0019] The movable ring of each conductive component is electrically connected to the excitation coil or receiving coil corresponding to the eddy current probe module; the collar, the support rod and the conductive ring are all capable of conducting electricity.

[0020] By setting up an electric slip ring assembly, the detection assembly can be ensured to rotate synchronously with the rotating shaft, and it can also facilitate powering the detection assembly or receiving data from the detection assembly. The non-conductive ring prevents short circuits between conductive components.

[0021] Furthermore, each group of the running wheel assembly includes a plurality of running wheel units, and each running wheel unit is arranged in a circular array around the axis of the rotating shaft; the running wheel unit includes:

[0022] The walking rod is fixed on the headstock or tailstock, and the axis is arranged along the radial direction of the rotation axis;

[0023] The through rod is inserted into the walking rod and can move along the axis of the walking rod. The axis of the through rod coincides with the axis of the walking rod. The through rod passes through the end of the walking rod away from the headstock or the tailstock. The walking rod is provided with a through slot for the through rod to move. A driving wheel is installed at the end of the through rod that passes through the through slot.

[0024] The walking spring is in the through slot, and the axis of the walking spring is parallel to the axis of the walking rod; one end of the walking spring abuts against the corresponding end of the walking rod, and the other end abuts against the corresponding end of the through slot; the walking spring is always in a compressed state;

[0025] The vertical pole is fixed on the through pole, and the vertical pole passes through the walking pole, and the walking pole is provided with a sliding groove for the vertical pole to move;

[0026] Adjusting nut, threaded onto the walking pole, used to limit the movement of the upright pole and through pole as a whole;

[0027] A travel motor for rotating the driving wheel is installed on the through rod of the travel wheel assembly on the tailstock.

[0028] The length of the penetrating rod extending out of the walking rod can be changed by screwing the adjusting nut, thereby ensuring that the entire device can stably abut against the inner wall of the pipe by relying on the walking wheel. The adjusting nut can also prevent the penetrating rod from continuing to extend after the penetrating rod extends out of the walking rod to a certain length, making it easy for the operator to easily place the device into the pipe and avoiding temporarily overcoming the elastic force of the walking spring when placing the device into the pipe, thereby forcing the walking wheel unit to be inserted into the pipe.

[0029] Furthermore, a limiting nut is threadedly connected to the rotating shaft, and the limiting nut is located between the slider and the tailstock; under the action of the limiting spring, the slider abuts against the limiting nut.

[0030] The distance between the eddy current probe module and the pipe can be adjusted by simply turning the limiting nut. It is suitable for pipes with a diameter of 50~100 and is easy to adjust.

[0031] Furthermore, each of the movable rings is fixedly connected to a connecting block, the connecting block 2 is non-conductive, and the other end of the connecting rod 2 is rotatably connected to the connecting block.

[0032] By providing the connecting block, all the moving rings can be rotated synchronously at the same time, and the connection of the end of the connecting rod 2 away from the eddy current probe module can also be facilitated.

[0033] Furthermore, the movable ring is provided with a notch for the support rod to pass through.

[0034] It is possible to facilitate the moving ring to pass through the bracket rod without affecting the movement of the moving ring along the conductive ring, thereby avoiding interference from the bracket rod and preventing the moving ring from being unable to move.

[0035] Furthermore, the detection components are provided in two groups. Beneficial effects

[0036] The device is provided with a detection component, which enables the eddy current probe module to adjust its position along the radial direction of the rotating axis, thereby achieving the purpose of being able to handle pipes with a diameter of 50~100mm.

[0037] The detection component can rotate with the rotation of the rotating shaft to detect one circle of the pipeline. As the walking wheel assembly moves, the detection component can detect one circle of the pipeline in multiple intervals during the movement until the entire inner wall of the pipeline is completely detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the device;

[0039] Figure 2 It is a schematic diagram of the structure after the sleeve is connected with a conductive ring and a movable ring;

[0040] Figure 3 It is a structural diagram of the travel wheel unit.

[0041] 1. Tailstock; 2. Rotating axis; 3. Headstock; 4. Slider; 5. Limit spring; 6. Limit nut; 7. Collar; 8. Support rod; 9. Conductive ring; 10. Moving ring; 11. Connecting block 1; 12. Connecting block 2; 13. Connecting rod 1; 14. Connecting rod 2; 15. Traveling rod; 16. Through rod; 17. Vertical rod; 18. Slide; 19. Traveling spring; 20. Adjusting nut; 21. Driving wheel; 22. Traveling motor; 23. Driving motor; 24. Notch DETAILED DESCRIPTION

[0042] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0043] See Figure 1 The adjustable rotating eddy current probe detection device includes a tailstock 1. In this embodiment, the tailstock 1 is cylindrical in shape, and the axis of the tailstock 1 is arranged vertically.

[0044] The upper surface of the tailstock 1 is rotatably connected to a rotating shaft 2, and the axis of the rotating shaft 2 coincides with the axis of the tailstock 1. A headstock 3 is provided at the end of the rotating shaft 2 away from the tailstock 1. In this embodiment, the headstock 3 is cylindrical in shape, and the axis of the headstock 3 coincides with the axis of the rotating shaft 2. The rotating shaft 2 is also rotatably connected to the headstock 3.

[0045] A drive motor 23 is provided on the tailstock 1. The non-rotating shaft end of the drive motor 23 is fixed on the tailstock 1. The rotating shaft of the drive motor 23 is fixedly connected to the rotating shaft 2. The rotating shaft of the drive motor 23 coincides with the rotating shaft axis of the rotating shaft 2. The drive motor is used to drive the rotating shaft 2 to rotate.

[0046] A slider 4 is mounted on the rotating shaft 2. This slider 4 is movably mounted on the rotating shaft 2 and can move along the axis of the rotating shaft 2. The slider 4 is located between the tailstock 1 and the headstock 3. While the slider 4 rotates synchronously with the rotating shaft 2, it can also move relative to the rotating shaft 2 along the axis of the rotating shaft 2. A limiting spring 5 is mounted on the rotating shaft 2 and located between the slider 4 and the headstock 3. The limiting spring 5 is always compressed. Its ends abut the headstock 3 and the slider 4, respectively.

[0047] A limiting nut 6 is threadedly connected to the rotating shaft 2, and the limiting nut 6 is located between the slider 4 and the tailstock 1. Under the elastic force of the limiting spring 5, the slider 4 abuts against the upper surface of the limiting nut 6.

[0048] See Figure 1 and Figure 2 , an electric slip ring assembly is also provided on the rotating shaft 2, and the electric slip ring assembly is located between the limiting nut 6 and the tailstock 1. The electric slip ring assembly includes:

[0049] Collar 7 is mounted on rotating shaft 2 and fixedly connected to the upper surface of tailstock 1. The inner wall of collar 7 is connected to the outer wall of rotating shaft 2 via a bearing, and collar 7 does not rotate with the rotation of rotating shaft 2. In this embodiment, collar 7 is a circular tube, with its axis coinciding with the axis of rotating shaft 2. Collar 7 is made of a non-conductive material.

[0050] Multiple groups of conductive components are provided on the collar 7. In this embodiment, the conductive components are equidistantly provided along the axis of the collar 7. In this embodiment, there are eight groups of conductive components. In other embodiments, there may be 4N groups of conductive components, where N is a natural number other than 0. Figure 2 , the conductive components include:

[0051] A plurality of support rods 8 are fixed on the circumferential outer wall of the collar 7. In this embodiment, the axis of each support rod 8 is arranged along the radial direction of the collar 7, and each support rod 8 is arranged in an array along the circumference of the axis of the collar 7.

[0052] The conductive ring 9 is simultaneously sleeved on a plurality of support rods 8. The ends of the support rods 8 away from the collar 7 are fixedly connected to the conductive ring 9. The axis of the conductive ring 9 coincides with the axis of the collar 7. In this embodiment, the conductive ring 9 and each support rod 8 are integrally provided. The conductive ring 9 and the support rod 8 are all made of conductive metal.

[0053] The movable ring 10 is movably mounted on the conductive ring 9, is conductive, and can move relative to the conductive ring 9 around the axis of the conductive ring 9. A notch 24 is provided on the movable ring 10. During movement, the movable ring 10 can rely on the notch 24 to cross the support rod 8 to prevent the support rod 8 from interfering with the movement of the movable ring 10.

[0054] From top to bottom, each group of conductive components is sequentially recorded as: conductive component one, conductive component two, ..., conductive component eight.

[0055] The movable rings 10 of conductive components 1, 2, 3, 4, and 5 are commonly fixedly connected to a connecting block. Similarly, the movable rings 10 of conductive components 5, 6, 7, 8, and 9 are also commonly fixedly connected to a connecting block. These two connecting blocks are designated as connecting block 11 and connecting block 2, 12. Both connecting block 11 and connecting block 2 are non-conductive. Connecting block 11 connects the movable rings 10 of conductive components 1, 2, 3, 4, and rotates synchronously as a whole. Similarly, connecting block 2 12 connects the movable rings 10 of conductive components 5, 6, 7, 8, and 9 as a whole and rotates synchronously as a whole.

[0056] It also includes N sets of detection components. Since N=2, there are two sets of detection components in this embodiment. The detection components include:

[0057] The eddy current probe module is an existing technology. It contains an excitation coil and a receiving coil. When energized, the excitation coil generates an alternating magnetic field. The receiving coil generates an induced potential based on the eddy currents generated in the pipeline, and the magnitude of the induced potential is monitored by a sensor.

[0058] One end of the connecting rod 13 is rotatably connected to the slider 4, and the other end is rotatably connected to the eddy current probe module.

[0059] Connecting rod 2 (14) has one end pivotally connected to the eddy current probe module and the other end pivotally connected to the corresponding connecting block. That is, the corresponding ends of connecting rod 2 (14) in the two probe assemblies are pivotally connected to connecting block 1 (11) and connecting block 2 (12), respectively. The axes of connecting rod 1 and connecting rod 2 are both parallel to the horizontal plane.

[0060] Assume that the two groups of eddy current probe modules are eddy current probe module A and eddy current probe module B respectively.

[0061] Both the eddy current probe module A and the eddy current probe module B have two groups of data lines, which are respectively recorded as magnetic field generating lines and eddy current data lines. There are two magnetic field generating lines and two eddy current data lines respectively.

[0062] Since the connection mode of the eddy current probe module A is the same as that of the eddy current probe module B, in this embodiment, only the connection mode of the eddy current probe module A is used as an example for description.

[0063] One end of one of the magnetic field generating wires in the eddy current probe module A is electrically connected to one end of the excitation coil, and the other end passes through the eddy current probe module A and is electrically connected to the moving ring 10 of the conductive component 1; the other end of the excitation coil is electrically connected to the moving ring 10 of the conductive component 2 through another magnetic field generating wire in the same way. The two magnetic field generating wires are Figure 1The two red wires bound to the connecting rod 2 14 in the figure, in this article, are bound by a cable tie to the connecting rod 2 14. The positive power line that supplies power to the eddy current probe module A passes through the collar 7 and is electrically connected to the collar 7 of the conductive component 1; the negative power line that supplies power to the eddy current probe module A passes through the collar 7 and is electrically connected to the collar 7 of the conductive component 2. The positive power line and the negative power line are the two red lines that pass through the collar 7. The positive and negative power lines in this solution are only used to distinguish nouns, because the alternating magnetic field generated in the excitation coil and the current in the excitation coil are alternating current, and the method is not unchanged.

[0064] When the excitation coil in eddy current probe module A is energized, the current flows as follows: from the positive power line, it passes through the support rod 8 of conductive component one, the conductive ring 9, and the mobile ring 10, and then enters one end of the excitation coil through one of the magnetic field generating lines. From the other end of the excitation coil, it passes through another magnetic field generating line, the mobile ring 10 of conductive component two, the conductive ring 9, the support rod 8, and flows to the negative power line, thus forming a closed loop. The opposite current flow direction is not repeated. The excitation coil in eddy current probe module A can pass alternating current to generate an alternating magnetic field. The power supply principle of eddy current probe module B is the same, but the excitation coil of eddy current probe module B is powered by conductive components five and six, which will not be repeated.

[0065] One end of one of the eddy current data lines in the eddy current probe module A is electrically connected to one end of the receiving coil, and the other end passes through the eddy current probe module and is electrically connected to the moving ring 10 of the conductive component three; the other end of the receiving coil is electrically connected to the moving ring 10 of the conductive component four through another eddy current data line, that is, Figure 1 The two blue lines are bound to the connecting rod 2 14.

[0066] A data line capable of receiving eddy current data in the eddy current probe module A passes through the ring 7 and is electrically connected to the support rod 8 of the conductive component three; another data line capable of receiving eddy current data in the eddy current probe module A passes through the ring 7 and is electrically connected to the support rod 8 of the conductive component four, thereby forming a closed loop.

[0067] The receiving coil in the eddy current probe module A generates eddy currents due to the alternating magnetic field. One of the directions of the eddy current current in the receiving coil is as follows: the current flows from one data line of the eddy current data, sequentially through the support rod 8 of the conductive component three, the conductive ring 9, the mobile ring 10, and one of the eddy current data lines to one end of the receiving coil, and then from the other end of the receiving coil, sequentially through another eddy current data line, the mobile ring 10 of the conductive component four, the conductive ring 9, and the support rod 8 to the other data line. According to the knowledge related to eddy currents, the direction of the current in this closed loop is opposite to the direction of the current in the excitation coil, so the direction of the eddy current will also change. This belongs to the prior art and will not be described in detail here. A current sensor is connected in series in this loop to detect the eddy current value in real time. The receiving principle of the eddy current probe module B is the same as that of the eddy current probe module B, but the receiving coil of the eddy current probe module B is connected by the conductive component seven and the conductive component eight, which will not be described in detail here.

[0068] The system also includes two sets of running wheel assemblies, one connected to the tailstock 1 and the other to the headstock 3. The running wheel assembly on the headstock 3 is a driven assembly and has no power, while the running wheel assembly on the tailstock is an active assembly and has power. Each set of running wheel assemblies includes multiple running wheel units, which are arranged in a circular array around the axis of the tailstock 1 or the headstock 3.

[0069] See Figure 1 and Figure 3 , the travel wheel unit includes:

[0070] The walking rod 15 is fixed on the circumferential side wall of the headstock 3 or the tailstock 1 , and its axis is arranged along the radial direction of the headstock 3 or the tailstock 1 .

[0071] The through rod 16 is inserted into the corresponding traveling rod 15 and can move relative to the traveling rod 15. The inside of the traveling rod 15 is provided with a through groove for the movement of the through rod 16. The through rod 16 passes out from one end of the traveling rod 15 away from the headstock 3 or the tailstock 1.

[0072] The vertical rod 17 is fixed to the circumferential sidewall of the end of the through rod 16 within the running rod 15, with the axis of the vertical rod 17 aligned radially with the through rod 16. A chute 18 is defined on the running rod 15 for the vertical rod 17 to move through, with the length of the chute 18 parallel to the axis of the running rod 15. The end of the vertical rod 17 away from the through rod 16 extends out of the chute 18.

[0073] The walking spring 19 is in the through slot of the walking rod 15, and its axis is parallel to the axis of the walking rod 15; the walking spring 19 is always in a compressed state, one end of the walking spring 19 abuts against the end face of the through slot, and the other end abuts against the end corresponding to the through slot.

[0074] The adjustment nut 20 is threadedly connected to the travel rod 15. Assuming the outer wall of the headstock 3 or tailstock 1 is a plane P, as viewed radially from the travel rod 15, the adjustment nut 20 is located between the vertical rod 15 and the plane P. In other words, under the elastic force of the travel spring 19, the vertical rod 17 and the adjustment nut 20 abut against the surface of the headstock 3 or tailstock 1, and the adjustment nut 20 is used to prevent the penetrating rod 16 from continuing to extend beyond the travel rod 15.

[0075] The driving wheel 21 is rotatably connected to the end of the penetrating rod 16 away from the traveling spring 19 , and the axis of the driving wheel 21 is arranged horizontally.

[0076] The difference between the two sets of travel wheel assemblies is that a travel motor 22 is fixedly mounted on the through rod 16 of the travel wheel assembly on the tailstock 1. The travel motor 22 is electrically connected to the corresponding drive wheel 21 through a gear set. Each travel motor 22 is used to drive the corresponding drive wheel 21. The power cord for each travel motor 22 is tied to the travel rod 15 and passes through the tailstock 1.

[0077] The process of using this device is:

[0078] First, the operator needs to slowly turn the adjusting nut 20 to allow the elastic force of the traveling spring 19 to push the penetrating rod 16 and the driving wheel 21 to move, so that the driving wheel 21 can rely on the elastic force of the traveling spring 19 to stably support the inner wall of the pipe with a diameter of 50~100mm. Stop turning the adjusting nut 20 until the device can be supported on the inner wall of the pipe.

[0079] Then, tighten the limiting nut 6 to allow the elastic force of the limiting spring 5 to push the slider 4 to move on the rotating shaft 2, ensuring that the two sets of detection components are close to the inner wall of the pipe at the same time, ignoring the error caused by the unequal length of the two connecting rods 1 or 2.

[0080] The lower end of the tailstock 1 is connected to relevant wires in a wired manner for power supply and data reception. It is continuously dragged as the device moves in the pipeline. This part of the wire is long enough to meet the detection requirements.

[0081] When the device stops moving, the drive motor 23 causes the rotating shaft 2, the limiting nut 6, the slider 4, and the two detection assemblies to rotate 360 ​​degrees around the central axis of the rotating shaft 2 as a whole, detecting one circle of the pipe inner wall and obtaining eddy current data for one circle of the pipe inner wall. The device then continues to move forward for a distance and stops. The drive motor 23 again causes the rotating shaft 2, the limiting nut 6, the slider 4, and the two detection assemblies to rotate 360 ​​degrees around the central axis of the rotating shaft 2 as a whole, detecting one circle of the pipe inner wall. This process continues in this manner... By continuously moving forward at intervals, the two detection assemblies rotate 360 ​​degrees, continuously detecting the entire pipe inner wall.

[0082] If the detection assembly encounters an obstacle, such as a bulge, it will force the slider 4 to move upward, further compressing the limiting spring 5. For example, Figure 1 When the left detection component encounters an obstacle, the slider 4 is forced to move upward, thereby adapting to the protrusion produced by the obstacle and avoiding a serious collision with the obstacle.

[0083] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. Adjustable rotating eddy current probe detection device, characterized in that, The invention comprises a tailstock (1), a rotating shaft (2) being rotatably connected to the tailstock (1), and a headstock (3) being rotatably connected to the end of the rotating shaft (2) away from the tailstock (1); a driving motor (23) for rotating the rotating shaft (2) is provided on the tailstock (1); and a group of walking wheel assemblies for moving the detection device are provided on both the tailstock (1) and the headstock (3); A slider (4) is sleeved on the rotating shaft (2), the slider (4) is movably clamped on the rotating shaft (2), and the slider (4) can move along the axis of the rotating shaft (2). The slider (4) is located between the tailstock (1) and the headstock (3); a limiting spring (5) is sleeved on the rotating shaft (2), the limiting spring (5) is always in a compressed state, and the limiting spring (5) is located between the headstock (3) and the slider (4); An electric slip ring assembly is provided on the tailstock (1); a detection assembly is provided on the electric slip ring assembly and the slider (4), and the detection assembly includes: Eddy current probe module; A connecting rod (13) having one end rotatably connected to the eddy current probe module and the other end rotatably connected to the slider (4); One end of the connecting rod 2 (14) is rotatably connected to the eddy current probe module, and the other end is rotatably connected to the electric slip ring assembly.

2. The adjustable rotating eddy current probe detection device according to claim 1, characterized in that: The electric slip ring assembly comprises: A collar (7) is fixed to the tailstock (1) and is non-conductive; A plurality of conductive components are arranged on the collar (7); the conductive components include: A plurality of support rods (8) fixed on the collar (7); The conductive ring (9) is fixedly sleeved on the support rod (8); the axis of the conductive ring (9) coincides with the axis of the rotating shaft (2); A movable ring (10) is movably sleeved on the conductive ring (9) and can move along the conductive ring (9); The movable ring (10) of each conductive component is electrically connected to the excitation coil or receiving coil corresponding to the eddy current probe module; the collar (7), the support rod (8) and the conductive ring (9) are all capable of conducting electricity.

3. The adjustable rotating eddy current probe detection device according to claim 1, characterized in that: Each group of the walking wheel assembly comprises a plurality of walking wheel units, each of which is arranged in a circular array around the axis of the rotating shaft (2); the walking wheel unit comprises: A walking rod (15) is fixed on the headstock (3) or the tailstock (1), and its axis is arranged along the radial direction of the rotating shaft (2); A penetrating rod (16) is provided in the traveling rod (15) and can move along the axis of the traveling rod (15). The axis of the penetrating rod (16) coincides with the axis of the traveling rod (15). The penetrating rod (16) passes through an end of the traveling rod (15) away from the headstock (3) or the tailstock (1). The traveling rod (15) is provided with a penetrating groove for the penetrating rod (16) to move. A driving wheel (21) is installed at the end of the penetrating rod (16) passing through the penetrating groove. The walking spring (19) is in the through groove, and the axis of the walking spring (19) is parallel to the axis of the walking rod (15); one end of the walking spring (19) abuts against one end of the walking rod (15), and the other end abuts against the end corresponding to the through groove; the walking spring (19) is always in a compressed state; The vertical rod (17) is fixed on the through rod (16), and the vertical rod (17) passes through the walking rod (15). The walking rod (15) is provided with a sliding groove (18) for the vertical rod (17) to move; An adjusting nut (20) is threadedly connected to the walking rod (15) and is used to limit the movement of the vertical rod (17) and the through rod (16) as a whole; A travel motor (22) for rotating a driving wheel (21) is installed on a through rod (16) of a travel wheel assembly on the tailstock (1).

4. The adjustable rotating eddy current probe detection device according to claim 2, characterized in that: A limiting nut (6) is threadedly connected to the rotating shaft (2), and the limiting nut (6) is located between the slider (4) and the tailstock (1); under the action of the limiting spring (5), the slider (4) abuts against the limiting nut (6).

5. The adjustable rotating eddy current probe detection device according to claim 2, characterized in that: Each of the movable rings (10) is fixedly connected with a connecting block, which is non-conductive, and the other end of the second connecting rod (14) is rotatably connected to the connecting block.

6. The adjustable rotating eddy current probe detection device according to claim 2, characterized in that: The movable ring (10) is provided with a notch for the support rod (8) to pass through.

7. The adjustable rotating eddy current probe detection device according to claim 2, characterized in that: The detection components are provided in two groups.

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