Magnetic field induction type rotor surface crack detection device

Abstract

The invention discloses a magnetic field induction type rotor surface crack detection device, and belongs to the technical field of crack detection, the magnetic field induction type rotor surface crack detection device comprises a base, one side of the base is provided with a side cover, and the top surface of the base is fixedly provided with a side frame; according to the invention, the cleaning mechanism and the magnetic field induction crack detection mechanism are arranged in a matched manner, so that comprehensive detection of cracks on the outer surface of the rotor can be completed, and the position of the magnetic field induction crack detection mechanism can be automatically adjusted according to different specifications of the rotor; the distance between the magnetic field detection probe and the outer surface of the detected rotor is determined, the detection precision is guaranteed, meanwhile, when the magnetic field induction crack detection mechanism moves, the sweeping mechanism can be synchronously driven to move and make contact with the detected rotor, the outer surface of the rotor can be cleaned while the rotor is detected in all directions, and the detection efficiency is improved. Metal impurity residues are avoided, the detection precision is further improved, and the actual application effect of the whole equipment is good.

Description

Technical Field

[0001] The invention belongs to the technical field of crack detection, and in particular relates to a magnetic field induction type rotor surface crack detection device. Background Art

[0002] Crack detection refers to the use of specific technologies and methods to accurately detect and evaluate internal or surface defects such as cracks without destroying the material or workpiece. These cracks may exist on the surface or inside of an object in the form of straight lines or curves, posing a potential threat to the integrity and structural safety of the object. When performing crack detection on a product, a crack detection device needs to be applied.

[0003] The Chinese patent discloses (CN105510353B) a generator rotor magnetic pole T tail slot crack automatic detection device, which aims to solve the existing magnetic pole T tail slot crack detection inconvenient operation, high labor intensity, long detection cycle, and potential safety hazards when the rotor is relatively high. The invention includes a base, a guide wheel connecting plate and a drive wheel connecting plate are connected to the base, the upper ends of the guide wheel connecting plate and the drive wheel connecting plate are hinged together, abutment springs are connected between the lower ends of the guide wheel connecting plate and the drive wheel connecting plate, and the lower ends of the guide wheel connecting plate and the drive wheel connecting plate are respectively connected to the lower guide roller and the drive roller, a driving mechanism for driving the drive roller to rotate is installed on the base, a detection probe is installed on the upper end of the base, buffer springs are connected to the left and right side walls of the base, and side guide rollers are installed at the outer ends of the buffer springs, and support springs are connected to the positions near the left and right side edges on the front and rear sides of the base, and upper guide rollers are installed at the outer ends of the support springs. Although current crack detection devices are capable of detecting cracks, they are not comprehensive enough for crack detection on the surface of cylindrical products. At the same time, during detection, some metal impurities remaining on the surface of the product can easily interfere with the actual monitoring situation, which can easily lead to increased errors in the monitoring results and poor actual application effects. Therefore, a magnetic field induction rotor surface crack detection device is proposed. Summary of the invention

[0004] The purpose of the present invention is to propose a magnetic field induction rotor surface crack detection device to solve the problem that although the current crack detection device can detect cracks, it is not comprehensive enough for crack detection on the surface of cylindrical products. At the same time, during detection, some metal impurities remaining on the surface of the product can easily interfere with the actual monitoring situation, which can easily lead to increased errors in the monitoring results and poor actual application effects.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme: a magnetic field induction rotor surface crack detection device, comprising a base, a side cover is provided on one side of the base, a side frame is fixedly installed on the top surface of the base, a telescopic top frame is fixedly installed on the top of the side frame, and a travel groove and a top hole are provided on the top surface of the base; A rotor mounting mechanism is provided on the inner wall of the bottom surface of the base, and the rotor mounting mechanism is used for quick installation of the rotor. An inner guide rail is fixedly installed on the inner surface of the base, and a cleaning mechanism and a magnetic field induction crack detection mechanism are slidably installed on the inner guide rail. The magnetic field induction crack detection mechanism is used for all-round crack detection on the outer surface of the rotor, and the cleaning mechanism is used for synchronous cleaning processing during the rotor crack detection process.

[0006] By adopting the above technical scheme, a cleaning mechanism and a magnetic field induction crack detection mechanism are provided in combination. Through this design, not only can a comprehensive detection of cracks on the outer surface of the rotor be completed, but also the position of the magnetic field induction crack detection mechanism can be automatically adjusted according to the different specifications of the rotor, and the distance between the magnetic field detection probe and the outer surface of the measured rotor is fixed to ensure the detection accuracy. At the same time, when the magnetic field induction crack detection mechanism moves, it can synchronously drive the cleaning mechanism to move and contact with the measured rotor, and can clean the outer surface of the rotor while performing all-round detection of the rotor, avoiding the residue of metal impurities, further improving the detection accuracy, and the actual application effect of the overall equipment is good.

[0007] As a further description of the above technical solution: The cleaning mechanism includes a first movable seat, which is slidably installed on the inner guide rail through sliding grooves arranged on the outer walls on both sides of the first movable seat. A first top groove and a rotating hole are arranged on the top surface of the first movable seat, and a first roller is rotatably installed in the rotating hole through a rotating shaft.

[0008] As a further description of the above technical solution: A top roller is fixedly mounted on the top surface of the first roller, a plurality of cleaning brush strips are arranged on the outer surface of the top roller, and two first air guide assemblies are rotatably mounted on the first top groove.

[0009] As a further description of the above technical solution: The magnetic field induction crack detection mechanism includes a second movable seat and a magnetic field detection probe. The second movable seat is slidably installed on the inner guide rail through sliding grooves arranged on the outer walls on both sides thereof. A second top groove and a rotating hole are arranged on the top surface of the second movable seat. A second roller is rotatably installed in the rotating hole through a rotating shaft.

[0010] As a further description of the above technical solution: A mounting roller is fixedly mounted on the top surface of the second roller, a plurality of magnetic field detection probes are arranged on the outer surface of the mounting roller, and a top magnetic field induction detection cover is rotatably mounted on the top surface of the mounting roller via a rotating shaft.

[0011] As a further description of the above technical solution: A mounting rod is fixedly installed on the top surface of the top magnetic field induction detection cover, the top end of the mounting rod is fixedly connected to the bottom surface of the telescopic top frame, and two second air guide components are rotatably installed on the second top groove.

[0012] As a further description of the above technical solution: The second air guide component has the same specifications and sizes as the first air guide component. Two bidirectional threaded rods are fixedly installed on the outer wall of one side of the second movable seat. The two bidirectional threaded rods are arranged parallel to each other, and one end of the two bidirectional threaded rods is threadedly connected to two threaded holes arranged inside the first movable seat.

[0013] As a further description of the above technical solution: The second wind guide component includes a wind shaft, which is rotatably installed in a rotating hole set on the top surface of the second top groove. The outside of the wind shaft is fixedly installed with fan blades and a meshing gear plate. The fan blades are located above the meshing gear plate. An inner rack is fixedly installed on the inner wall of one side of the base, and the meshing gear plate and the inner rack are meshed and connected with each other.

[0014] As a further description of the above technical solution: The rotor mounting mechanism includes a drive motor, which is fixedly mounted on the inner wall of the bottom surface of the base. A rotor mounting cover is fixedly mounted on the top of the output shaft of the drive motor. A plurality of side air holes are arranged inside the rotor mounting cover, and three rotor positioning assemblies are arranged on the inner surface of the rotor mounting cover.

[0015] As a further description of the above technical solution: The rotor positioning assembly includes a sliding shaft, which is fixedly mounted on the inner surface of the rotor mounting cover, a wheel frame is slidably mounted on the outside of the sliding shaft, a positioning pulley is rotatably mounted on the inner side of the wheel frame via a rotating shaft, and a sleeve spring is sleeved on the outside of the sliding shaft, one end of the sleeve spring is fixedly connected to an outer wall of one side of the wheel frame.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, a cleaning mechanism and a magnetic field induction crack detection mechanism are provided in a matching manner. When the rotor is subjected to surface crack detection, the rotor is first installed and positioned, and then energized. According to the outer contour size of the rotor, the telescopic top frame is controlled to shrink, and at this time, the magnetic field induction crack detection mechanism can be driven to synchronously move sideways until the second roller contacts the outer contour of the rotor. During detection, the rotor to be detected is controlled to rotate, and at this time, the second roller that fits the outer contour of the rotor can also rotate synchronously, and the installation roller can rotate synchronously. The multiple magnetic field detection probes on the outer surface of the installation roller can perform all-round magnetic field monitoring on the outer surface of the synchronously rotating rotor, and the cracks on the outer surface of the rotor can be identified according to the abnormality of the monitored magnetic field. At the same time, the top magnetic field induction detection cover can detect cracks on the top surface of the rotating rotor. When the magnetic field induction crack detection mechanism moves, the bidirectional threaded rod can be synchronously driven to move sideways, and the bidirectional threaded rod can drive the cleaning mechanism threadedly connected thereto to synchronously move, close to the magnetic field induction Crack detection mechanism, when the magnetic field sensing crack detection mechanism stops moving, the first roller of the cleaning mechanism will also contact the outer contour of the rotor. Similarly, when the rotor rotates, it can synchronously drive the top roller and multiple cleaning brushes outside it to rotate. Multiple cleaning brushes can realize comprehensive cleaning of the outer surface of the rotor during the detection process to avoid magnetic field monitoring errors caused by some residual metal impurities. Through this design, not only can the comprehensive detection of cracks on the outer surface of the rotor be completed, but also the position of the magnetic field sensing crack detection mechanism can be automatically adjusted according to the different specifications of the rotor, and the distance between the magnetic field detection probe and the outer surface of the measured rotor is fixed to ensure the detection accuracy. At the same time, when the magnetic field sensing crack detection mechanism moves, it can synchronously drive the cleaning mechanism to move and contact with the measured rotor, and can realize the cleaning of the outer surface of the rotor while performing all-round detection of the rotor to avoid residual metal impurities, further improve the detection accuracy, and the overall equipment has good practical application effect.

[0017] 2. In the present invention, a rotor mounting mechanism is provided in combination. When installing the rotor to be measured, it is only necessary to directly install the rotor to be measured into the rotor mounting cover. The positioning pulley will rotate as the rotor is installed until the bottom of the rotor contacts the bottom surface of the rotor mounting cover. The wheel frame and the positioning pulley will move adaptively following the contour change of the outer surface of the rotor. Through this design, the rotor can be quickly installed. At the same time, since the rotor mounting mechanism has an adaptive distance adjustment function, the rotor mounting mechanism can be adapted to the installation of rotors of different specifications and has a wide range of applications. Moreover, since the positioning pulley is vertically arranged, when the rotor rotates horizontally, multiple positioning pulleys can ensure the stability of the rotor during rotation and ensure the detection accuracy.

[0018] 3. In the present invention, a first air guide assembly and a second air guide assembly are matched with the cleaning mechanism and the magnetic field induction crack detection mechanism. When the cleaning mechanism and the magnetic field induction crack detection mechanism are displaced, the meshing gear disc can mesh with the inner rack fixedly installed on the inner wall of one side of the base, thereby driving the wind shaft and the fan blades to rotate. The rotating fan blades can generate a certain amount of air at the base. These airflows can enter the inner side of the rotor mounting cover through a plurality of side wind holes provided inside the rotor mounting cover, thereby blowing toward the rotor to be measured. These air volumes can be used in conjunction with the cleaning brush bar to further improve the cleaning effect of the cleaning brush bar on the outside of the rotor to be measured, thereby further ensuring the detection accuracy of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a magnetic field induction rotor surface crack detection device.

[0020] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a magnetic field induction rotor surface crack detection device after the side cover is disassembled.

[0021] Figure 3 This is a schematic diagram of the exploded three-dimensional structure of a magnetic field induction rotor surface crack detection device.

[0022] Figure 4 It is a schematic diagram of the exploded three-dimensional structure of a rotor mounting mechanism in a magnetic field induction rotor surface crack detection device.

[0023] Figure 5 It is a schematic diagram of the exploded three-dimensional structure of a cleaning mechanism and a magnetic field induction crack detection mechanism in a magnetic field induction type rotor surface crack detection device.

[0024] Figure 6 It is a schematic diagram of the exploded three-dimensional structure of a magnetic field induction crack detection mechanism in a magnetic field induction rotor surface crack detection device.

[0025] Figure 7 It is a schematic diagram of the exploded three-dimensional structure of a cleaning mechanism in a magnetic field induction rotor surface crack detection device.

[0026] Figure 8 The present invention is a schematic diagram of the three-dimensional structure of a second air guide component in a magnetic field induction type rotor surface crack detection device.

[0027] Fig. 9 A magnetic field induction rotor surface crack detection device Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Fig.10 The present invention is a schematic diagram of the three-dimensional structure of a rotor positioning assembly in a magnetic field induction type rotor surface crack detection device.

[0029] Legend: 1. Telescopic top frame; 2. Side frame; 3. Base; 4. Cleaning mechanism; 41. Top roller; 42. Cleaning brush strip; 43. First roller; 44. First air guide assembly; 45. First moving seat; 46. First top slot; 5. Rotor mounting mechanism; 51. Rotor positioning assembly; 511. Positioning pulley; 512. Sliding shaft; 513. Set spring; 514. Wheel frame; 52. Side air hole; 53. Rotor mounting cover; 54. Driving motor ; 6. Magnetic field induction crack detection mechanism; 61. Mounting rod; 62. Top magnetic field induction detection cover; 63. Mounting roller; 64. Magnetic field detection probe; 65. Second roller; 66. Second wind guide assembly; 661. Wind shaft; 662. Fan blade; 663. Engaging gear plate; 67. Bidirectional threaded rod; 68. Second top groove; 69. Second moving seat; 7. Side cover; 8. Travel groove; 9. Top hole; 10. Inner guide rail; 11. Inner rack. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 10 The present invention provides a technical solution: a magnetic field induction rotor surface crack detection device, comprising a base 3, a side cover 7 is provided on one side of the base 3, a side frame 2 is fixedly installed on the top surface of the base 3, a telescopic top frame 1 is fixedly installed on the top of the side frame 2, and a travel groove 8 and a top hole 9 are provided on the top surface of the base 3; A rotor mounting mechanism 5 is provided on the inner wall of the bottom surface of the base 3, and the rotor mounting mechanism 5 is used for quick installation of the rotor. An inner guide rail 10 is fixedly installed on the inner surface of the base 3, and a cleaning mechanism 4 and a magnetic field induction crack detection mechanism 6 are slidably installed on the inner guide rail 10. The magnetic field induction crack detection mechanism 6 is used for all-round crack detection on the outer surface of the rotor, and the cleaning mechanism 4 is used for synchronous cleaning during the rotor crack detection process.

[0032] The cleaning mechanism 4 includes a first movable seat 45, which is slidably installed on the inner guide rail 10 through sliding grooves arranged on the outer walls on both sides thereof, and a first top groove 46 and a rotating hole are arranged on the top surface of the first movable seat 45, in which a first roller 43 is rotatably installed through a rotating shaft, and a top roller 41 is fixedly installed on the top surface of the first roller 43, and a plurality of cleaning brush strips 42 are arranged on the outer surface of the top roller 41, and two first air guide components 44 are rotatably installed on the first top groove 46.

[0033] The magnetic field induction crack detection mechanism 6 includes a second movable seat 69 and a magnetic field detection probe 64. The second movable seat 69 is slidably installed on the inner guide rail 10 through sliding grooves arranged on the outer walls on both sides thereof. A second top groove 68 and a rotating hole are arranged on the top surface of the second movable seat 69. A second roller 65 is rotatably installed in the rotating hole through a rotating shaft. An installation roller 63 is fixedly installed on the top surface of the second roller 65. A plurality of magnetic field detection probes 64 are arranged on the outer surface of the installation roller 63. A top magnetic field induction detection cover 62 is rotatably installed on the top surface of the installation roller 63 through a rotating shaft.

[0034] The specific implementation method is as follows: when performing surface crack detection on the rotor, the rotor is first installed and positioned, and then powered on after installation. According to the outer contour size of the rotor, the telescopic top frame 1 is controlled to shrink, and at this time, the magnetic field induction crack detection mechanism 6 can be driven to move sideways synchronously until the second roller 65 contacts the outer contour of the rotor. During detection, the rotor to be tested is controlled to rotate, and at this time, the second roller 65 that fits the outer contour of the rotor can also rotate synchronously, and the installation roller 63 can rotate synchronously. The multiple magnetic field detection probes 64 on the outer surface of the installation roller 63 can perform all-round magnetic field monitoring on the outer surface of the synchronously rotating rotor, and identify the cracks on the outer surface of the rotor according to the abnormality of the monitored magnetic field. At the same time, the top magnetic field The induction detection cover 62 can detect cracks on the top surface of the rotating rotor. When the magnetic field induction crack detection mechanism 6 moves, it can synchronously drive the bidirectional threaded rod 67 to move sideways. The bidirectional threaded rod 67 can drive the cleaning mechanism 4 threadedly connected to it to move synchronously and approach the magnetic field induction crack detection mechanism 6. When the magnetic field induction crack detection mechanism 6 stops moving, the first roller 43 of the cleaning mechanism 4 will also contact the outer contour of the rotor. Similarly, when the rotor rotates, it can synchronously drive the top roller 41 and the multiple cleaning brush strips 42 outside it to rotate. The multiple cleaning brush strips 42 can realize comprehensive cleaning of the outer surface of the rotor during the detection process, thereby avoiding magnetic field monitoring errors caused by some residual metal impurities.

[0035] Through this design, not only can a comprehensive detection of cracks on the outer surface of the rotor be completed, but the position of the magnetic field sensing crack detection mechanism 6 can also be automatically adjusted according to the different specifications of the rotor, and the distance between the magnetic field detection probe 64 and the outer surface of the rotor being measured is fixed to ensure the detection accuracy. At the same time, when the magnetic field sensing crack detection mechanism 6 moves, it can synchronously drive the cleaning mechanism 4 to move and contact with the rotor being measured, and can clean the outer surface of the rotor while performing all-round detection of the rotor, avoiding the residue of metal impurities, further improving the detection accuracy, and the actual application effect of the overall equipment is good.

[0036] A mounting rod 61 is fixedly installed on the top surface of the top magnetic field induction detection cover 62, and the top end of the mounting rod 61 is fixedly connected to the bottom surface of the telescopic top frame 1. Two second air guide components 66 are rotatably installed on the second top groove 68. The second air guide components 66 are consistent in size with the first air guide components 44. Two bidirectional threaded rods 67 are fixedly installed on the outer wall of one side of the second movable seat 69. The two bidirectional threaded rods 67 are arranged parallel to each other, and one end of the two bidirectional threaded rods 67 is threadedly connected with two threaded holes arranged inside the first movable seat 45. The second air guide component 66 includes a wind shaft 661, which is rotatably installed in a rotating hole arranged on the top surface of the second top groove 68. A fan blade 662 and a meshing toothed disk 663 are fixedly installed on the outside of the wind shaft 661. The fan blade 662 is located above the meshing toothed disk 663. An inner rack 11 is fixedly installed on the inner wall of one side of the base 3, and the meshing toothed disk 663 and the inner rack 11 are meshed with each other.

[0037] The specific implementation method is as follows: when the cleaning mechanism 4 and the magnetic field induction crack detection mechanism 6 are displaced, the meshing gear disc 663 can mesh with the inner rack 11 fixedly installed on the inner wall of one side of the base 3, thereby driving the wind shaft 661 and the fan blades 662 to rotate. The rotating fan blades 662 can generate a certain amount of air on the base 3. These airflows can enter the inner side of the rotor mounting cover 53 through a plurality of side wind holes 52 provided inside the rotor mounting cover 53, thereby blowing toward the rotor to be measured. These air volumes can be used in conjunction with the cleaning brush strip 42 to further improve the cleaning effect of the cleaning brush strip 42 on the outside of the rotor to be measured, thereby further ensuring the detection accuracy of the equipment.

[0038] The rotor mounting mechanism 5 includes a driving motor 54, which is fixedly mounted on the inner wall of the bottom surface of the base 3, and a rotor mounting cover 53 is fixedly mounted on the top of the output shaft of the driving motor 54. A plurality of side air holes 52 are arranged inside the rotor mounting cover 53, and three rotor positioning assemblies 51 are arranged on the inner surface of the rotor mounting cover 53. The rotor positioning assembly 51 includes a sliding shaft 512, and the sliding shaft 512 is fixedly mounted on the inner surface of the rotor mounting cover 53. A wheel frame 514 is slidably mounted on the outside of the sliding shaft 512, and a positioning pulley 511 is rotatably mounted on the inner side of the wheel frame 514 through a rotating shaft. The positioning pulley 511 and the wheel frame 514 have rotation resistance, and a set spring 513 is set on the outside of the sliding shaft 512, and one end of the set spring 513 is fixedly connected to an outer wall of one side of the wheel frame 514.

[0039] The specific implementation method is as follows: when installing the rotor to be measured, it is only necessary to directly install the rotor to be measured into the rotor mounting cover 53, and the positioning pulley 511 will rotate as the rotor is installed until the bottom of the rotor contacts the bottom surface of the rotor mounting cover 53, and the wheel frame 514 and the positioning pulley 511 will adaptively move following the contour changes of the outer surface of the rotor.

[0040] Through this design, the rotor can be quickly installed. At the same time, since the rotor installation mechanism 5 has an adaptive distance adjustment function, the rotor installation mechanism 5 can adapt to the installation of rotors of different specifications and has a wide range of applications. Moreover, since the positioning pulley 511 is vertically arranged, when the rotor rotates horizontally, multiple positioning pulleys 511 can ensure the stability of the rotor during rotation and ensure the detection accuracy.

[0041] Working principle: When performing surface crack detection on a rotor, the rotor is first installed and positioned. At this time, it is only necessary to directly install the rotor to be tested into the rotor mounting cover 53. The positioning pulley 511 will rotate with the installation of the rotor until the bottom of the rotor contacts the bottom surface of the rotor mounting cover 53. The wheel frame 514 and the positioning pulley 511 will move adaptively with the contour change of the outer surface of the rotor. After installation, it is energized, and the telescopic top frame 1 is controlled to shrink according to the outer contour size of the rotor. At this time, the magnetic field induction crack detection mechanism 6 can be driven to move sideways synchronously until the second roller 65 contacts the outer contour of the rotor. During detection, the rotor to be tested is controlled to rotate. At this time, the second roller 65 that fits the outer contour of the rotor can also rotate synchronously, and the installation roller 63 can rotate synchronously. The multiple magnetic field detection probes 64 on the outer surface of the installation roller 63 can perform all-round magnetic field monitoring on the outer surface of the synchronously rotating rotor, and identify cracks on the outer surface of the rotor according to the abnormality of the monitored magnetic field. At the same time, the top magnetic field induction detection cover 62 can monitor the top surface of the rotating rotor. The cracks are detected. When the magnetic field induction crack detection mechanism 6 moves, the bidirectional threaded rod 67 can be synchronously driven to move sideways. The bidirectional threaded rod 67 can drive the cleaning mechanism 4 threadedly connected thereto to move synchronously and approach the magnetic field induction crack detection mechanism 6. When the magnetic field induction crack detection mechanism 6 stops moving, the first roller 43 of the cleaning mechanism 4 will also contact the outer contour of the rotor. Similarly, when the rotor rotates, the top roller 41 and the multiple cleaning brush strips 42 outside it can be synchronously driven to rotate. The multiple cleaning brush strips 42 can realize the comprehensive cleaning of the outer surface of the rotor during the detection process, thereby avoiding the magnetic field monitoring error caused by some residual metal impurities. When the cleaning mechanism 4 and the magnetic field induction crack detection mechanism 6 are displaced, the meshing gear disc 663 can mesh with the inner rack 11 fixedly installed on the inner wall of one side of the base 3, thereby driving the wind shaft 661 and the fan blades 662 to rotate. The rotating fan blades 662 can generate a certain amount of air on the base 3. These airflows can enter the inner side of the rotor mounting cover 53 through a plurality of side wind holes 52 provided inside the rotor mounting cover 53, thereby blowing toward the rotor to be measured. These air volumes can be used in conjunction with the cleaning brush strip 42 to further improve the cleaning effect of the cleaning brush strip 42 on the outside of the rotor to be measured.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A magnetic field induction rotor surface crack detection device, comprising a base (3), characterized in that: A side cover (7) is provided on one side of the base (3); a side frame (2) is fixedly mounted on the top surface of the base (3); a telescopic top frame (1) is fixedly mounted on the top of the side frame (2); and a travel groove (8) and a top hole (9) are provided on the top surface of the base (3); A rotor mounting mechanism (5) is provided on the inner wall of the bottom surface of the base (3), and the rotor mounting mechanism (5) is used for rapid installation of the rotor. An inner guide rail (10) is fixedly mounted on the inner surface of the base (3), and a cleaning mechanism (4) and a magnetic field induction crack detection mechanism (6) are slidably mounted on the inner guide rail (10). The magnetic field induction crack detection mechanism (6) is used for all-round crack detection on the outer surface of the rotor, and the cleaning mechanism (4) is used for synchronous cleaning during the rotor crack detection process.

2. A magnetic field induction rotor surface crack detection device according to claim 1, characterized in that: The cleaning mechanism (4) comprises a first movable seat (45), the first movable seat (45) being slidably mounted on the inner guide rail (10) via sliding grooves arranged on the outer walls on both sides thereof, a first top groove (46) and a rotating hole being arranged on the top surface of the first movable seat (45), and a first roller (43) being rotatably mounted in the rotating hole via a rotating shaft.

3. A magnetic field induction rotor surface crack detection device according to claim 2, characterized in that: A top roller (41) is fixedly mounted on the top surface of the first rolling plate (43), a plurality of cleaning brush strips (42) are arranged on the outer surface of the top roller (41), and two first air guide components (44) are rotatably mounted on the first top groove (46).

4. A magnetic field induction rotor surface crack detection device according to claim 3, characterized in that: The magnetic field induction crack detection mechanism (6) comprises a second movable seat (69) and a magnetic field detection probe (64); the second movable seat (69) is slidably mounted on the inner guide rail (10) via sliding grooves provided on the outer walls on both sides thereof; a second top groove (68) and a rotating hole are provided on the top surface of the second movable seat (69); a second roller (65) is rotatably mounted in the rotating hole via a rotating shaft.

5. A magnetic field induction rotor surface crack detection device according to claim 4, characterized in that: A mounting roller (63) is fixedly mounted on the top surface of the second roller (65), a plurality of magnetic field detection probes (64) are arranged on the outer surface of the mounting roller (63), and a top magnetic field induction detection cover (62) is rotatably mounted on the top surface of the mounting roller (63) via a rotating shaft.

6. A magnetic field induction rotor surface crack detection device according to claim 5, characterized in that: A mounting rod (61) is fixedly mounted on the top surface of the top magnetic field induction detection cover (62), the top end of the mounting rod (61) is fixedly connected to the bottom surface of the telescopic top frame (1), and two second air guide components (66) are rotatably mounted on the second top groove (68).

7. A magnetic field induction rotor surface crack detection device according to claim 6, characterized in that: The second air guide component (66) has the same specifications and sizes as the first air guide component (44); two bidirectional threaded rods (67) are fixedly mounted on an outer wall of one side of the second movable seat (69); the two bidirectional threaded rods (67) are arranged parallel to each other; one end of the two bidirectional threaded rods (67) is threadedly connected to two threaded holes arranged inside the first movable seat (45).

8. The magnetic field induction rotor surface crack detection device according to claim 7, characterized in that: The second wind guide component (66) comprises a wind shaft (661), the wind shaft (661) being rotatably mounted in a rotating hole provided on the top surface of the second top groove (68), a fan blade (662) and a meshing toothed disc (663) being fixedly mounted on the outside of the wind shaft (661), the fan blade (662) being located above the meshing toothed disc (663), an inner toothed rack (11) being fixedly mounted on an inner wall of one side of the base (3), the meshing toothed disc (663) and the inner toothed rack (11) being meshingly connected with each other.

9. The magnetic field induction rotor surface crack detection device according to claim 8, characterized in that: The rotor mounting mechanism (5) comprises a drive motor (54), the drive motor (54) being fixedly mounted on the inner wall of the bottom surface of the base (3), a rotor mounting cover (53) being fixedly mounted on the top end of the output shaft of the drive motor (54), a plurality of side air holes (52) being arranged inside the rotor mounting cover (53), and three rotor positioning assemblies (51) being arranged on the inner surface of the rotor mounting cover (53).

10. The magnetic field induction rotor surface crack detection device according to claim 9, characterized in that: The rotor positioning assembly (51) comprises a sliding shaft (512), the sliding shaft (512) being fixedly mounted on the inner surface of a rotor mounting cover (53), a wheel frame (514) being slidably mounted on the outside of the sliding shaft (512), a positioning pulley (511) being rotatably mounted on the inside of the wheel frame (514) via a rotating shaft, the positioning pulley (511) and the wheel frame (514) having rotation resistance, a sleeved spring (513) being sleeved on the outside of the sliding shaft (512), one end of the sleeved spring (513) being fixedly connected to an outer wall of one side of the wheel frame (514).

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