A rotating eddy current testing device

Abstract

The present application discloses a rotating eddy current detection device, which relates to the field of non-destructive testing technology. The rotating eddy current detection device of the present application includes a shell, a main shaft, a drive assembly and a probe assembly. The probe assembly includes a mounting plate, a probe and an adjustment ring. A detection hole is opened in the center of the mounting plate. The two ends of the probe are respectively a detection end and an adjustment end. The detection end is arranged toward the detection hole. The adjustment end is provided with a movable adjustment plate. The inner wall of the adjustment ring is provided with an adjustment bar. The height of the adjustment bar gradually increases or decreases along its own extension direction. The rotating eddy current detection device of the present application, when the adjustment plate is in the adjustment position, rotates the mounting plate. The adjustment plate can continuously contact the adjustment bar during the relative rotation process of the mounting plate and the adjustment ring. Under the action of the adjustment bar whose height gradually increases or decreases, it drives the probe to rotate to adjust the distance between the detection end and the material, thereby improving the adjustment accuracy and adjustment efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of non-destructive testing, and in particular to a rotating eddy current testing device. Background Art

[0002] Rotating eddy current testing equipment (commonly known as "eddy current rotating head", also called rotating head) is the main equipment in the material non-destructive testing industry. It can perform non-destructive testing on materials through detection probes. During testing, the distance between the detection probe and the material surface needs to be adjusted according to the outer diameter of the material to meet the requirements of the testing process. However, in the rotating eddy current testing equipment in the prior art, if the distance between the detection probe and the material surface is to be adjusted, the detection probe needs to be manually disassembled and then moved a corresponding distance, and then reinstalled. This is not only time-consuming and labor-intensive, but also has low adjustment accuracy and efficiency. At the same time, for the adjustment of multiple detection probes, each detection probe needs to be disassembled and assembled separately and the distance between it and the material needs to be adjusted. During the adjustment process of multiple detection probes, adjustment errors are inevitable, resulting in inconsistent distances between the multiple detection probes and the material, which greatly reduces the detection accuracy of the rotating eddy current testing equipment. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the present application provides a rotating eddy current testing device that can conveniently adjust the distance between the probe and the material.

[0004] The present application provides a rotating eddy current detection device that adopts the following technical solution:

[0005] A rotating eddy current detection device comprises a housing, a hollow main shaft rotatable about its own axis and disposed within the housing, and a drive assembly for driving the main shaft to rotate. The rotating eddy current detection device also comprises a probe assembly, the probe assembly comprising:

[0006] A mounting plate, the mounting plate being coaxially connected to one end of the main shaft, and a detection hole being opened in the center of the mounting plate;

[0007] A probe, wherein the middle portion of the probe is rotatably connected to the mounting plate and the rotation axis therebetween is parallel to the axis of the main shaft, the two ends of the probe are respectively a detection end and an adjustment end, the detection end is arranged toward the detection hole, and the adjustment end is provided with a movable adjustment piece;

[0008] An adjustment ring, the adjustment ring being located at the end of the mounting plate and connected to the inner wall of the housing, the inner wall of the adjustment ring being provided with an adjustment strip, the adjustment strip extending in an arc shape along the circumference of the adjustment ring, the height of the adjustment strip gradually increasing or decreasing along its own extension direction;

[0009] The adjusting piece has an adjusting position and a non-adjusting position. When the adjusting piece is in the adjusting position, it conflicts with the adjusting strip. When the adjusting piece is in the non-adjusting position or in a position other than the adjusting position and the non-adjusting position, it is separated from the adjusting strip.

[0010] By adopting the above technical solution, when the adjusting piece is in the adjusting position, the mounting disk is rotated, and the adjusting piece can continuously contact the adjusting bar during the relative rotation of the mounting disk and the adjusting ring, and the adjusting piece drives the probe to rotate under the action of the adjusting bar whose height gradually increases or decreases, so as to adjust the distance between the detection end and the material, thereby improving the adjustment accuracy and adjustment efficiency; at the same time, if there are multiple probes, the mounting disk is rotated, and the adjusting pieces on the multiple probes all contact the adjusting bar and can drive the multiple probes to rotate synchronously, thereby avoiding adjustment errors between the multiple probes and effectively improving the detection accuracy of the rotating eddy current detection equipment; and when the adjusting piece is in the non-adjustment position, it is in a separated state from the adjusting bar, thereby effectively avoiding the adjustment bar from affecting the detection of the probe during the rotation of the mounting disk.

[0011] Preferably, the adjusting piece is rotatably connected to the adjusting end and the rotation axis therebetween is parallel to the rotation axis of the probe. A first gap is provided between the probe and the mounting plate. When the adjusting piece is in the adjusting position, the adjusting piece conflicts with the adjusting bar. When the adjusting piece is in the non-adjusting position, the adjusting piece is accommodated in the first gap. The probe assembly further includes a locking module for locking the adjusting piece in the adjusting position or the non-adjusting position.

[0012] By adopting the above technical solution, the adjustment plate can be freely switched between the adjustment position and the non-adjustment position by its own rotation, and can be locked in the corresponding position by the locking module, so that the probe can adjust the distance between it and the material by rotating the mounting plate when the adjustment plate contacts the adjustment bar, and detect the material by rotating the mounting plate when the adjustment plate is accommodated in the first gap. The two working processes do not affect each other, thereby ensuring the detection quality of the rotating eddy current detection equipment.

[0013] Preferably, a plurality of first scale lines are arranged at intervals on the circumferential surface of the adjustment ring, and a first pointer is provided on the mounting plate, with the end of the first pointer facing one of the plurality of first scale lines.

[0014] By adopting the above technical solution, when the adjustment plate is in the adjustment position, the mounting disk is rotated, and the probe can rotate and change the distance between the detection end and the material. The first pointer on the mounting disk can point to different first scale lines as the mounting disk rotates, and the corresponding distance adjustment value is displayed, which greatly improves the accuracy of the distance adjustment between the detection end and the material.

[0015] Preferably, there are four probes, and the four probes are arranged at intervals around the detection hole. The projections of the four detection ends constituting the four probes on the mounting plate are all located within the detection hole, and a second gap for detecting materials is formed between the four detection ends.

[0016] By adopting the above technical solution, the coverage of the probe is greatly improved, so that the probe scans a wider width every time the rotating eddy current testing equipment rotates one circle, improving the detection effect without increasing the spindle speed and extending the service life of the equipment.

[0017] Preferably, there are four adjustment strips and they are arranged at intervals around the circumference of the adjustment ring, and the four adjustment strips correspond one-to-one to the four adjustment ends constituting the four probes.

[0018] By adopting the above technical solution, the distances between the four probes and the material can be adjusted synchronously, thus avoiding adjustment errors between the four probes and effectively improving the detection accuracy of the rotating eddy current detection equipment.

[0019] Preferably, the probe assembly also includes four limit blocks arranged on the mounting plate at circumferential intervals around the detection hole, the four limit blocks corresponding one to the four probes, and a limit rod is provided on the limit block, the limit rod is arranged toward the detection hole and its extension direction is consistent with the radial direction of the mounting plate.

[0020] By adopting the above technical solution, the four limit rods can be distributed to limit the four probes, avoiding the influence of the detection effect due to the excessive rotation amplitude of the probe.

[0021] Preferably, the rotating eddy current detection equipment also includes a coupling assembly, which includes a rotor disk and a stator disk arranged adjacent to each other, the rotor disk is sleeved on the other end of the main shaft and electrically connected to the probe, and the stator disk surrounds the circumference of the main shaft and is connected to the inner wall of the shell.

[0022] By adopting the above technical solution, the signal detected by the probe can be transmitted to an external flaw detection instrument through the coupling component, which greatly facilitates the analysis and processing of the detection signal.

[0023] Preferably, the rotating eddy current detection device further comprises two guide sleeves respectively embedded on two opposite side walls of the shell, and guide holes opened on the guide sleeves, and the two guide holes are coaxially connected to the detection hole.

[0024] By adopting the above technical solution, the material can be guided through the two guide holes when passing through the detection hole, thereby ensuring the detection effect of the probe on the material.

[0025] Preferably, the rotating eddy current detection equipment also includes two clamping assemblies respectively provided on the two opposite side walls of the shell, the two clamping assemblies are respectively located at the two ends of the axial direction of the main shaft, the clamping assembly includes a clamping seat, a clamping opening opened on the clamping seat and coaxially connected to the detection hole, and a plurality of clamping jaws provided on the clamping seat, the middle part of the clamping jaw is rotatably connected to the clamping seat and the rotation axis between the two is parallel to the axial center line of the main shaft, the plurality of clamping jaws are arranged at circumferential intervals around the clamping opening and a connecting rod is hinged between two adjacent clamping jaws, and a third gap for clamping materials is formed between the plurality of clamping jaws.

[0026] By adopting the above technical solution, both ends of the material can be clamped by two clamping components respectively, avoiding shaking of the material during the detection process and ensuring the detection effect of the probe on the material.

[0027] Preferably, the rotating eddy current detection equipment also includes a bearing cylinder inscribed in the shell and surrounding the circumference of the main shaft, a convex ring inscribed in the inner wall of the bearing cylinder, two bearings sleeved on the main shaft and respectively located at both ends of the convex ring, a spacer sleeve sleeved on the main shaft and with both ends pressed against the two bearings respectively, a locking spring and a pressure ring sleeved on the end of the spacer sleeve, a fourth gap between the convex ring and one of the bearings, and the locking spring and the pressure ring are both embedded in the fourth gap.

[0028] By adopting the above technical solution, the two bearings can be relatively locked with the bearing cylinder with the cooperation of the spacer, locking spring, pressure ring and convex ring, thereby improving the rotation stability of the main shaft and ensuring the detection effect of the rotating eddy current detection equipment.

[0029] In summary, the present invention includes at least one of the following beneficial technical effects:

[0030] 1. When the adjustment plate is in the adjustment position, rotate the mounting plate. The adjustment plate can continuously contact the adjustment bar during the relative rotation of the mounting plate and the adjustment ring. Under the action of the adjustment bar that gradually increases or decreases in height, it drives the probe to rotate to adjust the distance between the detection end and the material, improving the adjustment accuracy and efficiency.

[0031] 2. If there are multiple probes, rotate the mounting plate so that the adjustment pieces on the multiple probes all come into contact with the adjustment bar and can drive the multiple probes to rotate synchronously, thus avoiding adjustment errors between the multiple probes and effectively improving the detection accuracy of the rotating eddy current testing equipment;

[0032] 3. When the adjustment piece is in the non-adjustment position, it is separated from the adjustment bar, which effectively prevents the adjustment bar from affecting the detection of the probe during the rotation of the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the structure of the rotating eddy current detection device in the embodiment of the present application;

[0034] Figure 2 yes Figure 1 AA cross-section diagram in;

[0035] Figure 3 yes Figure 1 BB cross-section diagram in;

[0036] Figure 4 yes Figure 1 C-direction view in.

[0037] Markings in the accompanying drawings: 1, housing; 2, main shaft; 21, gear; 3, drive assembly; 4, probe assembly; 40, mounting plate; 41, detection hole; 42, probe; 421, detection end; 422, adjustment end; 423, adjustment plate; 424, rotating shaft; 43, adjustment ring; 44, adjustment bar; 45, locking module; 46, first scale line; 47, first pointer; 48, limit block; 49, limit rod; 5, coupling assembly; 51, rotor disk; 52, stator disk; 6, guide sleeve; 61, first guide sleeve; 62, first Second guide sleeve; 7. Guide hole; 71. First guide hole; 72. Second guide hole; 8. Clamping assembly; 8a. First clamping assembly; 8b. Second clamping assembly; 81. Clamping seat; 82. Clamping mouth; 83. Clamping jaw; 831. First clamping jaw; 832. Second clamping jaw; 833. Third clamping jaw; 84. Connecting rod; 85. Second pointer; 86. Scale plate; 87. Screw rod; 88. Ball seat; 89. Handwheel; 9. Bearing cylinder; 10. Raised ring; 11. Bearing; 12. Spacer; 13. Locking spring; 14. Pressure ring. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-4 The present invention is described in further detail.

[0039] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0040] See also Figure 1-4As shown, a rotating eddy current detection device is shown, which includes a shell 1, a hollow main shaft 2 rotatable around its own axis and arranged in the shell 1, a driving component 3 for driving the main shaft 2 to rotate, and a probe component 4, wherein the hollow main shaft 2 has an inner cavity, and the material to be detected is accommodated in the inner cavity; the driving component 3 is a motor, and its output end is connected to the gear 21 at the end of the main shaft 2 through a belt.

[0041] Combine Figure 2-3 As shown, the probe assembly 4 includes a mounting plate 40, a probe 42 and an adjustment ring 43. The mounting plate 40 is coaxially connected to one end of the main shaft 2. A detection hole 41 is opened in the center of the mounting plate 40. The detection hole 41 is coaxially connected to the inner cavity of the main shaft 2, and the main body of the material is inserted into the detection hole 41.

[0042] The central portion of the probe 42 is rotatably connected to the mounting plate 40 via a rotating shaft 424, with the axis of rotation of the rotating shaft 424 parallel to the axis of the main shaft 2. A return spring (not shown) is sleeved on the rotating shaft 424. The probe 42 has a detection end 421 and an adjustment end 422 at its ends. The detection end 421 faces the detection hole 41 and maintains a certain distance from the material in the detection hole 41, which must meet the requirements of the detection process. The adjustment end 422 is equipped with a movable adjustment tab 423.

[0043] The adjustment ring 43 is located at the end of the mounting plate 40 and connected to the inner wall of the housing 1. An adjustment strip 44 is provided on the inner wall of the adjustment ring 43. The adjustment strip 44 extends in an arc shape along the circumference of the adjustment ring 43. The height of the adjustment strip 44 gradually increases or decreases along its own extension direction.

[0044] The adjusting piece 423 has an adjusting position and a non-adjusting position. When the adjusting piece 423 is in the adjusting position, it conflicts with the adjusting bar 44. At this time, the probe 42 is in an adjustable state, and the distance between the probe 42 and the material can be adjusted by rotating the mounting plate 40; when the adjusting piece 423 is in the non-adjusting position or in a position other than the adjusting position and the non-adjusting position, it is separated from the adjusting bar 44. At this time, the probe 42 is in a working state, and the probe 42 can be driven to detect the material by rotating the mounting plate 40.

[0045] Specifically, when the adjusting piece 423 is in the adjusting position, the mounting disk 40 is rotated, and the adjusting piece 423 can continuously contact the adjusting bar 44 during the relative rotation of the mounting disk 40 and the adjusting ring 43, and the probe 42 is driven to rotate under the action of the adjusting bar 44 whose height gradually increases or decreases. The rotating probe 42 can drive the detection end 421 to approach or move away from the material to adjust the distance between the detection end 421 and the material; and when the adjusting piece 423 is in the non-adjusting position, it is in a separated state from the adjusting bar 44. When the mounting disk 40 rotates, the adjusting piece 423 and the adjusting bar 44 do not contact each other, and the probe 42 can be relatively stationary with the mounting disk 40 and detect the material as the mounting disk 40 rotates. The adjusting bar 44 will not affect the detection of the probe 42 during the rotation of the mounting disk 40.

[0046] In this embodiment, if Figure 2 As shown, the height of the adjustment bar 44 gradually increases in the counterclockwise direction. When the mounting disk 40 rotates in the clockwise direction, the adjustment piece 423 continuously contacts the adjustment bar 44. The adjustment bar 44 with a gradually increasing height can gradually increase the pressure on the adjustment piece 423, so that the probe 42 rotates in the clockwise direction and squeezes the reset spring. The detection end 421 of the probe 42 gradually moves away from the material during the rotation of the probe 42; and when the mounting disk 40 rotates in the counterclockwise direction, the adjustment bar 44 with a gradually decreasing height gradually reduces the pressure on the adjustment piece 423. The probe 42 gradually rotates counterclockwise and resets under the action of the reset spring therein. The detection end 421 of the probe 42 gradually approaches the material during the reset process of the probe 42.

[0047] In this embodiment, the adjusting piece 423 is rotatably connected to the adjusting end 422 and the rotation axis therebetween is parallel to the rotation axis of the probe 42. There is a first gap between the probe 42 and the mounting plate 40. When the adjusting piece 423 is in the adjustment position, the adjusting piece 423 conflicts with the adjustment bar 44; when the adjusting piece 423 is in the non-adjustment position, the adjusting piece 423 is accommodated in the first gap; the probe assembly 4 also includes a locking module 45 for locking the adjusting piece 423 in the adjustment position or the non-adjustment position. The locking module 45 is a bolt, which is threadedly connected to the adjusting end 422. The adjusting piece 423 is sleeved on the bolt and is located between the adjusting end 422 and the nut of the bolt. The locking of the adjusting piece 423 can be achieved by tightening the bolt.

[0048] During adjustment, the bolts are loosened, and then the adjusting plate 423 is rotated to freely switch between the adjustment position and the non-adjustment position. The bolts are then tightened to lock the adjusting plate 423 in the adjustment position and the non-adjustment position. The probe 42 can adjust the distance between itself and the material by rotating the mounting plate 40 when the adjusting plate 423 contacts the adjustment bar 44. When the adjusting plate 423 is located in the first gap, the mounting plate 40 rotates to detect the material. These two working processes do not affect each other, ensuring the detection quality of the rotating eddy current testing equipment.

[0049] In this embodiment, if Figure 2 As shown, a plurality of first scale lines 46 are spaced apart on the circumferential surface of the adjustment ring 43. A first pointer 47 is provided on the mounting plate 40, with the end of the first pointer 47 pointing toward one of the first scale lines 46. When the adjustment plate 423 is in the adjustment position, the mounting plate 40 is rotated, and the probe 42 can rotate and change the distance between the detection end 421 and the material. The first pointer 47 on the mounting plate 40 can point to different first scale lines 46 as the mounting plate 40 rotates, correspondingly indicating the distance adjustment value, greatly improving the accuracy of the distance adjustment between the detection end 421 and the material. The specific number of the plurality of first scale lines 46 can be flexibly set as needed.

[0050] In this embodiment, there are four probes 42, and the four probes 42 are arranged at intervals around the detection hole 41. The projections of the four detection ends 421 constituting the four probes 42 on the mounting plate 40 are all located within the detection hole 41, and a second gap for detecting materials is formed between the four detection ends 421.

[0051] Through the above setting, the coverage of the probe 42 is greatly improved, so that the probe 42 can scan a wider width every time the rotating eddy current detection equipment rotates one circle, thereby improving the detection effect without increasing the speed of the spindle 2 and extending the service life of the equipment.

[0052] Furthermore, there are four adjustment bars 44 spaced circumferentially around the adjustment ring 43, and the four adjustment bars 44 correspond one-to-one with the four adjustment ends 422 of the four probes 42. When the mounting plate 40 is rotated, the adjustment tabs 423 on the four probes 42 all come into contact with the corresponding adjustment bars 44. Subsequently, the four probes 42 rotate synchronously with the rotation of the mounting plate 40, allowing the distance between the four probes 42 and the material to be adjusted synchronously, thus avoiding adjustment errors between the four probes 42 and effectively improving the detection accuracy of the rotating eddy current testing equipment.

[0053] In this embodiment, the probe assembly 4 further includes four stoppers 48 arranged on the mounting plate 40 at intervals around the circumference of the detection hole 41. The four stoppers 48 correspond one-to-one to the four probes 42. Each stopper 48 is provided with a stopper rod 49, which is positioned toward the detection hole 41 and extends in a radial direction consistent with the mounting plate 40. The four stoppers 49 can respectively limit the position of the four probes 42 to prevent the detection effect from being affected by excessive rotation of the probes 42.

[0054] Combine Figure 3 As shown, the rotating eddy current detection equipment also includes a coupling assembly 5, which includes a rotor disk 51 and a stator disk 52 arranged adjacent to each other. The rotor disk 51 is sleeved on the other end of the main shaft 2 and is electrically connected to the probe 42. The stator disk 52 surrounds the main shaft 2 and is connected to the inner wall of the housing 1. There are two sets of rotor disks 51 and stator disks 52, and the two sets of stator disks 52 are arranged adjacent to each other. The two sets of rotor disks 51 are located on both sides of the two sets of stator disks 52. The rotor disk 51 rotates synchronously with the main shaft 2. The probe 42 is electrically connected to the coupling coil of the rotor disk 51 through a cable and transmits the detection signal to the rotor disk 51. The stator disk 52 is fixed to the housing 1. The coil of the stator disk 52 can receive the electrical signal of the coupling coil of the rotor disk 51 and transmit it to the flaw detection instrument cabinet through the electrical adapter box and cable. In this way, the signal detected by the probe 42 can be transmitted to the external flaw detection instrument cabinet through the coupling assembly 5, greatly facilitating the analysis and processing of the detection signal of the probe 42.

[0055] In this embodiment, combined with Figure 3 As shown, the rotating eddy current testing device also includes two guide sleeves 6 embedded in opposite side walls of the housing 1, and guide holes 7 defined in the guide sleeves 6. The two guide holes 7 are coaxially connected to the testing hole 41. The diameter of the guide holes 7 is consistent with the maximum size of the second gap. The material is guided through the two guide holes 7 as it passes through the testing hole 41, ensuring that the probe 42 can effectively detect the material. The guide sleeves 6 include a first guide sleeve 61 and a second guide sleeve 62, and the guide holes 7 include a first guide hole 71 and a second guide hole 72. The ends of the material are respectively inserted into the first guide hole 71 and the second guide hole 72.

[0056] Combine Figure 3-4As shown, the rotating eddy current detection device also includes two clamping assemblies 8 respectively arranged on the two opposite side walls of the shell 1. The two clamping assemblies 8 are respectively located at the two ends of the axial direction of the main shaft 2. The clamping assembly 8 includes a clamping seat 81, a clamping port 82 opened on the clamping seat 81 and coaxially connected to the detection hole 41, and three clamping jaws 83 provided on the clamping seat 81. The setting direction of the clamping seat 81 is perpendicular to the axial direction of the main shaft 2. The middle part of the clamping jaw 83 is rotatably connected to the clamping seat 81 and the rotation axis between the two is parallel to the axis of the main shaft 2. The three clamping jaws 83 are arranged at intervals around the circumference of the clamping port 82 and a connecting rod 84 is hinged between two adjacent clamping jaws 83. A third gap for clamping the material is formed between the three clamping jaws 83. Through the setting of the clamping assembly 8, the two ends of the material can be clamped by the two clamping assemblies 8 respectively, which avoids the material from shaking during the detection process and ensures the detection effect of the probe 42 on the material. The clamping assembly 8 includes a first clamping assembly 8a and a second clamping assembly 8b, and both ends of the material are clamped by the first clamping assembly 8a and the second clamping assembly 8b respectively.

[0057] In this embodiment, if Figure 4 As shown, the three jaws 83 include a first jaw 831, a second jaw 832 and a third jaw 833. One end of the first jaw 831 is hinged with a screw rod 87, and a ball seat 88 is provided on the clamping seat 81. The screw rod 87 is threadedly connected to the ball seat 88, and the other end of the screw rod 87 is connected to a handwheel 89. The other end of the first jaw 831 and one end of the second jaw 832 are respectively hinged to the two ends of a connecting rod 84, and the other end of the second jaw 832 and one end of the third jaw 833 are respectively hinged to the two ends of another connecting rod 84. The other end of the third jaw 833 is hinged with a second pointer 85, and the second pointer 85 is locked by a bolt. An arc-shaped dial 86 is also provided on the clamping seat 81. The dial 86 is provided with a plurality of second scale lines, and the second pointer 85 points to one of the plurality of second scale lines.

[0058] By rotating the handwheel 89, the screw rod 87 can be driven to move along its axial direction in the ball seat 88, and the first jaw 831 can be driven to rotate. The first jaw 831 drives the second jaw 832 and the third jaw 833 to rotate through the connecting rod 84, thereby realizing the size adjustment of the third gap to clamp the material; and when the third jaw 833 rotates, it can drive the second pointer 85 to rotate, and the second pointer 85 can point to different second scale lines to correspondingly display the value of the size adjustment of the second gap.

[0059] In this embodiment, combined with Figure 3As shown, the rotating eddy current detection device also includes a bearing sleeve 9 connected to the housing 1 and surrounding the side of the main shaft 2, a convex ring 10 connected to the inner wall of the bearing sleeve 9, two bearings 11 sleeved on the main shaft 2 and respectively located at both ends of the convex ring 10, a spacer sleeve 12 sleeved on the main shaft 2 and with its two ends respectively pressed on the two bearings 11, a locking spring 13 and a pressure ring 14 sleeved on the end of the spacer sleeve 12, a fourth gap between the convex ring 10 and one of the bearings 11, and the locking spring 13 and the pressure ring 14 are both embedded in the fourth gap. Through the cooperation of the spacer sleeve 12, the locking spring 13, the pressure ring 14 and the convex ring 10, the two bearings 11 can be relatively locked with the bearing sleeve 9, thereby improving the rotational stability of the main shaft 2, thereby ensuring the detection effect of the rotating eddy current detection device. The bearing 11 here is an angular contact bearing, and the locking spring 13 is a disc spring.

[0060] The working principle of the rotating eddy current testing device in the embodiment of the present application is as follows: the material is sequentially passed through the first guide hole 71, the testing hole 41, the inner cavity of the main shaft 2, and the second guide hole 72, and its two ends are clamped by the first clamping assembly 8a and the second clamping assembly 8b respectively;

[0061] The adjusting piece 423 is rotated to be in the adjusting position, and then the adjusting piece 423 is locked by the locking module 45;

[0062] The driving assembly 3 is started, and the driving assembly 3 drives the main shaft 2 to rotate, the main shaft 2 drives the mounting plate 40 to rotate, and the mounting plate 40 drives the probe 42 to rotate. The adjusting piece 423 continuously contacts the adjusting bar 44. The adjusting bar 44, which gradually increases or decreases in height, can gradually increase or decrease the pressure on the adjusting piece 423, so that the detecting end 421 of the probe 42 gradually moves away from or approaches the material, thereby adjusting the distance between the detecting end 421 and the material.

[0063] According to the outer diameter of the material to be tested, when the first pointer 47 points to the corresponding first scale line 46, the driving assembly 3 is turned off. At this time, the distance between the detection end 421 of the probe 42 and the material is adjusted. Then, the adjusting piece 423 is rotated again to be accommodated in the first gap and locked by the locking module 45;

[0064] Start the driving assembly 3 again, the driving assembly 3 drives the main shaft 2 to rotate, the main shaft 2 drives the mounting plate 40 to rotate, the probe 42 and the mounting plate 40 are relatively stationary and rotate around the material as the mounting plate 40 rotates, thereby realizing the detection of the material.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotating eddy current detection device, comprising a housing (1), a hollow main shaft (2) rotatable about its own axis and arranged in the housing (1), and a drive assembly (3) for driving the main shaft (2) to rotate, characterized in that: The rotating eddy current detection device further comprises a probe assembly (4), wherein the probe assembly (4) comprises: A mounting plate (40), the mounting plate (40) being coaxially connected to one end of the main shaft (2), and a detection hole (41) being provided at the center of the mounting plate (40); A probe (42), wherein the middle portion of the probe (42) is rotatably connected to the mounting plate (40), and the rotation axis therebetween is parallel to the axis of the main shaft (2), and the two ends of the probe (42) are respectively a detection end (421) and an adjustment end (422), the detection end (421) is arranged toward the detection hole (41), and the adjustment end (422) is provided with a movable adjustment piece (423); an adjusting ring (43), the adjusting ring (43) being located at the end of the mounting plate (40) and connected to the inner wall of the housing (1); an adjusting strip (44) being provided on the inner wall of the adjusting ring (43); the adjusting strip (44) extending in an arc shape along the circumferential direction of the adjusting ring (43); and the height of the adjusting strip (44) gradually increasing or decreasing along its own extending direction; The adjusting piece (423) is rotatably connected to the adjusting end (422), and the rotation axis therebetween is parallel to the rotation axis of the probe (42). A first gap is provided between the probe (42) and the mounting plate (40). The adjusting piece (423) has an adjusting position and a non-adjusting position. When the adjusting piece (423) is in the adjusting position, the adjusting piece (423) is in conflict with the adjusting bar (44), and the probe (42) is in an adjustable state. When the adjusting piece (423) is in the non-adjusting position, the adjusting piece (423) is in a non-adjusting position. ) is separated from the adjustment bar (44), and the adjustment piece (423) is accommodated in the first gap, at which time the probe (42) is in a working state; the probe assembly (4) further comprises a locking module (45) for locking the adjustment piece (423) in an adjustment position or a non-adjustment position; the locking module (45) is a bolt, the bolt is threadedly connected to the adjustment end (422), the adjustment piece (423) is sleeved on the bolt and is located between the adjustment end (422) and the nut of the bolt, and the locking of the adjustment piece (423) is achieved by tightening the bolt; The rotating eddy current detection device further comprises a clamping assembly (8), wherein the clamping assembly (8) comprises a plurality of rotatable clamping jaws (83), a connecting rod (84) is hinged between two adjacent clamping jaws (83), a second pointer (85) is hinged to the other end of one of the clamping jaws (83), and the clamping assembly (88) further comprises a clamping seat (81), an arc-shaped scale plate (86) is further provided on the clamping seat (81), a plurality of second scale lines are provided on the scale plate (86), and the second pointer (85) points to one of the plurality of second scale lines; The rotating eddy current detection device also includes a bearing sleeve (9) connected in the housing (1) and surrounding the circumference of the main shaft (2), a convex ring (10) connected in the inner wall of the bearing sleeve (9), two bearings (11) sleeved on the main shaft (2) and respectively located at the two ends of the convex ring (10), a spacer (12) sleeved on the main shaft (2) and with its two ends respectively pressed against the two bearings (11), a locking spring (13) and a pressure ring (14) sleeved on the end of the spacer (12), a fourth gap is provided between the convex ring (10) and one of the bearings (11), and the locking spring (13) and the pressure ring (14) are both embedded in the fourth gap.

2. The rotating eddy current detection device according to claim 1, characterized in that: A plurality of first scale lines (46) are arranged at intervals on the circumferential surface of the adjustment ring (43), and a first pointer (47) is provided on the mounting plate (40), with the end of the first pointer (47) facing one of the plurality of first scale lines (46).

3. The rotating eddy current detection device according to claim 1, characterized in that: There are four probes (42), and the four probes (42) are arranged at intervals around the detection hole (41). The projections of the four detection ends (421) constituting the four probes (42) on the mounting plate (40) are all located within the detection hole (41), and a second gap for detecting materials is formed between the four detection ends (421).

4. The rotating eddy current detection device according to claim 3, characterized in that: There are four adjustment strips (44) arranged at intervals around the circumference of the adjustment ring (43), and the four adjustment strips (44) correspond one to one to the four adjustment ends (422) constituting the four probes (42).

5. The rotating eddy current detection device according to claim 3, characterized in that: The probe assembly (4) further comprises four limit blocks (48) arranged at intervals around the circumference of the detection hole (41) on the mounting plate (40), wherein the four limit blocks (48) correspond one-to-one to the four probes (42), and a limit rod (49) is provided on the limit block (48), wherein the limit rod (49) is arranged toward the detection hole (41) and its extension direction is consistent with the radial direction of the mounting plate (40).

6. The rotating eddy current testing device according to claim 1, characterized in that: The rotating eddy current detection device further comprises a coupling assembly (5), wherein the coupling assembly (5) comprises a rotor disk (51) and a stator disk (52) arranged adjacent to each other, wherein the rotor disk (51) is sleeved on the other end of the main shaft (2) and electrically connected to the probe (42), and the stator disk (52) surrounds the circumference of the main shaft (2) and is connected to the inner wall of the housing (1).

7. The rotating eddy current testing device according to claim 1, characterized in that: The rotating eddy current detection device further comprises two guide sleeves (6) respectively embedded in opposite side walls of the housing (1), and a guide hole (7) provided on the guide sleeve (6), wherein the two guide holes (7) are coaxially connected to the detection hole (41).

8. The rotating eddy current testing device according to claim 1, characterized in that: There are two clamping assemblies (8) and they are respectively arranged on the two opposite side walls of the shell (1). The two clamping assemblies (8) are respectively located at the two ends of the axial direction of the main shaft (2). The clamping assembly (8) also includes a clamping seat (81), a clamping opening (82) opened on the clamping seat (81) and coaxially connected to the detection hole (41), and the multiple clamping jaws (83) are arranged on the clamping seat (81). The middle part of the clamping jaw (83) is rotatably connected to the clamping seat (81) and the rotation axis between the two is parallel to the axis of the main shaft (2). The multiple clamping jaws (83) are arranged at intervals around the circumference of the clamping opening (82) and a third gap for clamping materials is formed between the multiple clamping jaws (83).

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