Magnetic particle inspection clamping tool

Abstract

The application relates to the technical field of magnetic powder detection, and particularly relates to a magnetic powder detection clamping tool. The magnetic powder detection clamping tool comprises a guide device, a first clamping device, a second clamping device and a supporting device. The first clamping device comprises a first driving mechanism and a first clamping mechanism. The first driving mechanism is fixedly installed on the guide device, and the first clamping mechanism is fixedly installed on the first driving mechanism. The first driving mechanism can drive the first clamping mechanism to rotate in a circumferential direction. The second clamping device comprises a second driving mechanism and a second clamping mechanism. The second driving mechanism is fixedly installed on the guide device, and the second clamping mechanism is circumferentially rotatably installed on the second driving mechanism. The second driving mechanism can drive the second clamping mechanism to move linearly in the length direction of the guide device. The supporting device is located between the first clamping mechanism and the second clamping mechanism. The magnetic powder detection clamping tool reduces the difficulty of spraying magnetic suspension on large-length cylindrical parts.

Description

Technical Field

[0001] This invention relates to the field of magnetic particle testing technology, and more specifically to magnetic particle testing clamping fixtures. Background Technology

[0002] For some precision, long cylindrical components (such as pipes, rods, or shafts), magnetic particle testing is usually required before they are put into use to determine whether there is any damage on the outer circumference of the long cylindrical components that could affect their use. The general process of magnetic particle testing is as follows: First, a layer of magnetic suspension fluid is sprayed onto the surface of the long cylindrical component, and then the surface of the long cylindrical component is inspected using a magnetic particle flaw detector.

[0003] When spraying magnetic powder, to avoid serious damage caused by friction between the outer circumference of long cylindrical parts and the cement floor, these parts are usually not laid flat on the ground, but rather placed upright. However, these upright parts are quite tall, requiring workers to use footrests to spray the upper part. Furthermore, workers need to constantly adjust the position of the footrests to ensure comprehensive spraying of the upper outer circumference of the parts. Additionally, to prevent the upright parts from tipping over and causing accidents, auxiliary support devices are installed to secure them to the ground, and these devices are removed after spraying is complete.

[0004] During the spraying process, workers need to climb to heights multiple times to carry out the spraying and repeatedly disassemble and assemble auxiliary support devices, making it quite difficult to spray magnetic suspension fluid onto long cylindrical parts. Summary of the Invention

[0005] The purpose of this invention is to overcome the difficulty of spraying magnetic suspension liquid onto long cylindrical parts in the prior art.

[0006] To achieve the above objectives, the present invention provides a magnetic particle inspection clamping fixture, which includes a guide device, a first clamping device, a second clamping device, and a support device. The first clamping device and the second clamping device are spaced apart along the length of the guide device. The first clamping device includes a first driving mechanism and a first clamping mechanism. The first driving mechanism is fixedly mounted on the guide device, and the first clamping mechanism is fixedly mounted on the first driving mechanism. The first driving mechanism can drive the first clamping mechanism to rotate circumferentially. The second clamping device includes a second driving mechanism and a second clamping mechanism. The second driving mechanism is fixedly mounted on the guide device, and the second clamping mechanism is rotatably mounted on the second driving mechanism. The second driving mechanism can drive the second clamping mechanism to move linearly along the length of the guide device. The axis of the second clamping mechanism coincides with the axis of the first clamping mechanism and both extend along the length of the guide device. The second clamping mechanism and the first clamping mechanism can horizontally clamp the axial ends of a long cylindrical component. The support device is located between the first clamping mechanism and the second clamping mechanism and is used to support the long cylindrical component.

[0007] In some embodiments, the guiding device includes two parallel tracks, a first driving mechanism and a second driving mechanism are fixedly installed at both ends of the tracks in their length direction, and a support device is located between the two tracks.

[0008] In some embodiments, the guiding device further includes a telescopic frame, which includes two first sleeves and two first telescopic rods. The two first sleeves are fixed between two tracks and spaced apart in the width direction of the guiding device. The axis of the first sleeve extends along the length direction of the guiding device. The rear sections of the two first telescopic rods are respectively movably inserted into the two first sleeves, and the front sections of the first telescopic rods are located outside the corresponding first sleeves. A support device is connected to the end of the front section of the first telescopic rod. A first traveling wheel is provided on the outer side of the front section of the first telescopic rod. The axis of the first traveling wheel extends along the width direction of the guiding device, and the first traveling wheel can roll along the track on the ground. A first connecting cylinder is provided at the top of the first sleeve. A first limiting rod is threadedly connected to the first connecting cylinder. The top end of the first limiting rod is located above the first connecting cylinder. A first rotating plate is provided at the top of the first limiting rod. The bottom end of the first limiting rod movably passes through the cylinder wall of the first connecting cylinder and can contact the top of the corresponding first telescopic rod.

[0009] In some embodiments, the first driving mechanism includes a first driving motor and a transmission shaft. The first driving motor is fixedly mounted on the end of the track, and the first end of the transmission shaft is connected to the output shaft of the first driving motor. The first clamping mechanism includes a first clamping disc, which is fixedly connected to the end of the transmission shaft. The first driving motor can drive the first clamping disc to rotate circumferentially around its axis via the transmission shaft. The axis of the transmission shaft, the axis of the first clamping disc, and the axis of the second clamping mechanism coincide and all extend along the length direction of the guide device. The axis of the first clamping disc is located above the guide device.

[0010] In some embodiments, the first clamping mechanism further includes an end fixing mechanism, which further includes two fixing blocks, two connecting bolts, and two clamping blocks. The two fixing blocks are respectively fixedly connected to the top and bottom surfaces of the first clamping disc. The two connecting bolts pass vertically through the two fixing blocks and are threadedly connected to the corresponding fixing blocks. The two clamping blocks are respectively threaded to the ends of the two connecting bolts to be used for radially clamping the ends of long cylindrical parts. The two clamping blocks are located between the first clamping disc and the second clamping mechanism, and the side of the clamping block facing the long cylindrical part is set as an arc surface.

[0011] In some embodiments, the second driving mechanism includes a first fixed plate, a first driving cylinder, and a connecting shaft. The first fixed plate is fixedly connected to the end of the track and extends vertically. The cylinder body of the first driving cylinder is fixedly connected to the first fixed plate, and the driving rod of the first driving cylinder is fixedly connected to the beginning end of the connecting shaft. The second clamping mechanism includes a second clamping disc, which is rotatably connected to the end of the connecting shaft. The axis of the second clamping disc, the axis of the connecting shaft, the axis of the first driving cylinder, and the axis of the first clamping disc coincide and all extend along the length direction of the guide device.

[0012] In some embodiments, the second drive mechanism further includes a support frame, which comprises a second fixed plate and a bracket. The bracket is located between two tracks, and a set of second traveling wheels is provided on each of the two sides of the bracket in the width direction of the guide device. The axes of the second traveling wheels extend along the width direction of the guide device, and the second traveling wheels are capable of rolling along the tracks on the ground. The second fixed plate is fixedly connected to the bracket and extends vertically. A connecting shaft passes through the second fixed plate and is fixedly connected to the second fixed plate. The second fixed plate is located between the first end and the last end of the connecting shaft. Driven by the first drive cylinder, the connecting shaft can drive the support frame to reciprocate.

[0013] In some embodiments, the support device includes a guide plate, two second sleeves, two second telescopic rods, and two rollers. The guide plate is fixedly connected to one end of the bracket facing the first clamping plate and extends vertically. The guide plate has two arc-shaped guide holes and two positioning holes, with the two positioning holes located at the centers of the two guide holes respectively. The sides of the second sleeves have a first threaded post and a second threaded post. The first threaded post passes through one of the positioning holes, and the second threaded post passes through one of the guide holes. Nuts are threaded onto the first threaded post and the second threaded post respectively. The nuts and the second sleeve are located on opposite sides of the guide plate. The axes of the first threaded post and the second threaded post extend along the length of the guide device. The second sleeves can rotate around the axis of the first threaded post and along the corresponding guide holes, and the distance between the two second sleeves gradually increases from top to bottom. Two second telescopic rods axially move through two second sleeves respectively. The axes of the second telescopic rods intersect the axis of the first clamping plate. The distance between the two second telescopic rods gradually increases from top to bottom. Two rollers are respectively installed at the top of the two second telescopic rods, located above the second sleeves. The axes of the rollers extend along the length of the guide device, and the outer circumference of the rollers is provided with an elastic layer. A second connecting cylinder is also provided on the side of the second sleeve. A second limiting rod is threadedly connected to the second connecting cylinder. The top of the second limiting rod is located outside the second connecting cylinder, and a second rotating plate is provided at the top of the second limiting rod. The bottom end of the second limiting rod moves through the cylinder wall of the second sleeve and can contact the side of the corresponding second telescopic rod.

[0014] In some embodiments, the magnetic particle inspection clamping fixture further includes a spraying device, which includes a spray head, a magnetic suspension supply mechanism, a moving block, a lead screw, a guide rod, a second drive motor, and two support rods. The support rods are fixedly connected to the same track, and the two support rods are spaced apart along the length of the guide device. The two ends of the lead screw are rotatably connected to the tops of the two support rods, and the two ends of the guide rod are fixedly connected to the tops of the two support rods. The length directions of the lead screw, guide rod, and guide device are aligned, and the lead screw and guide rod are spaced apart along the width of the guide device. The second drive motor is fixedly connected to the top of one of the support rods, and its drive shaft is connected to the end of the lead screw to drive it to rotate circumferentially. The lead screw passes through the moving block and is threadedly connected to it. The bottom of the moving block has a mounting groove, and the top of the guide rod is movably mounted in the mounting groove. The spray head is mounted on the moving block and can spray magnetic suspension towards long cylindrical parts. The magnetic suspension supply mechanism is located at the end of one of the tracks, communicates with the spray head, and can supply magnetic suspension to the spray head.

[0015] In some embodiments, the magnetic particle inspection clamping fixture further includes a conveying mechanism, two slide rails, and two second drive cylinders. The ends of the two slide rails are fixedly mounted on the top of the same track, the two slide rails are spaced apart along the length of the guide device, the beginning ends of the slide rails are located outside the guide device, and the top of the slide rails is provided with a groove extending along the width of the guide device. The bottom ends of two support rods are movably mounted in the two grooves respectively. The second drive cylinders are located above the grooves, the cylinder bodies of the two second drive cylinders are fixedly connected to the beginning ends of the two slide rails respectively, and the drive rods of the second drive cylinders are connected to the corresponding support rods. The second drive cylinders can drive the support rods to reciprocate along the slide rails. The conveying mechanism includes a first mounting rod, a lifting plate, a pressing rod, a pressing block, two second mounting rods, two third mounting rods, and two fourth mounting rods. The first mounting rod is detachably connected to the moving block. The second mounting rod includes a first rod segment and a second rod segment. The top ends of the two first rod segments are respectively fixedly connected to the first mounting rod, and the two first rod segments are spaced apart along the length of the guide device. The bottom end of the first rod segment is lower than its top end, and the horizontal distance between the first rod segment and the lead screw gradually increases from its top end to its bottom end. The top end of the second rod segment is fixedly connected to the bottom end of the first rod segment, and the bottom end of the second rod segment is lower than its top end. The horizontal distance between the second rod segment and the lead screw gradually increases from its top end to its bottom end, and the second rod segment and the first rod segment form an obtuse angle with the opening facing the track. The upper sections of the two third mounting rods are respectively movably inserted into the two second rod segments. The bottom end of the third mounting rod is located below the second rod segment, and the bottom end of the third mounting rod is connected to the second rod segment through a third drive cylinder. The axis of the third mounting rod is parallel to the axis of the third drive cylinder. The lifting plate is fixedly installed on the outside of the bottom ends of the two third mounting rods, and the lifting plate has a horizontal lifting surface. The top ends of the two fourth mounting rods are fixedly installed on the inner side of the two second rod segments respectively. The bottom end of the fourth mounting rod is lower than the top end of the fourth mounting rod, and the top end of the fourth mounting rod is higher than the bottom end of the third mounting rod. The horizontal distance between the fourth mounting rod and the lead screw gradually decreases from its top end to its bottom end. The pressing rod is fixedly connected to the bottom end of the two fourth mounting rods. A pressing block is installed on the side of the pressing rod facing the third mounting rod.

[0016] The above-mentioned technical solution of the present invention has the following beneficial effects:

[0017] Workers can lift long cylindrical parts between the first and second clamping mechanisms and place them on a support device. Then, a second drive mechanism moves the second clamping mechanism toward the first clamping mechanism, clamping both ends of the long cylindrical part around its circumference. At this point, the axis of the long cylindrical part extends along the length of the guide device, placing it horizontally. The first drive mechanism then rotates the first clamping mechanism, enabling it to rotate the long cylindrical part circumferentially. Workers can then easily apply magnetic suspension to the horizontally placed long cylindrical part. Therefore, the magnetic particle inspection clamping fixture of this invention reduces the difficulty of applying magnetic suspension to long cylindrical parts. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a magnetic particle detection clamping fixture in one embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of a magnetic particle detection clamping fixture in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a first clamping plate and a second clamping plate clamping a long cylindrical component in one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection between the first sleeve and the first telescopic rod in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the connection between the second sleeve and the second telescopic rod in one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of a conveying mechanism in one embodiment of the present invention;

[0024] Figure 7 yes Figure 1 A schematic diagram of part A.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Guiding device; 11. Track; 12. Telescopic frame; 121. First sleeve; 122. First telescopic rod; 123. First traveling wheel; 124. First connecting cylinder; 125. First limiting rod; 126. First rotating plate;

[0027] 2. First clamping device; 21. First driving mechanism; 211. Transmission shaft; 212. First drive motor; 22. First clamping mechanism; 221. First clamping plate; 223. Fixing block; 224. Connecting bolt; 225. Clamping block;

[0028] 3. Second clamping device; 31. Second drive mechanism; 311. First fixed plate; 312. First drive cylinder; 313. Connecting shaft; 314. Support frame; 315. Second fixed plate; 316. Bracket; 317. Second traveling wheel; 32. Second clamping mechanism; 321. Second clamping plate;

[0029] 4. Support device; 41. Guide plate; 411. Guide hole; 42. Second sleeve; 421. First threaded post; 422. Second threaded post; 423. Second connecting cylinder; 424. Second limiting rod; 425. Second rotating plate; 43. Second telescopic rod; 44. Roller;

[0030] 5. Spraying device; 51. Spray nozzle; 52. Magnetic suspension fluid supply mechanism; 53. Moving block; 54. Lead screw; 55. Guide rod; 56. Second drive motor; 57. Support rod; 58. Slide rail; 59. Second drive cylinder;

[0031] 6. Transport mechanism; 61. First mounting rod; 62. Lifting plate; 63. Pressing rod; 64. Pressing block; 65. Second mounting rod; 651. First rod segment; 652. Second rod segment; 66. Third mounting rod; 67. Fourth mounting rod; 68. Third drive cylinder;

[0032] 7. Long cylindrical parts. Detailed Implementation

[0033] The features and exemplary embodiments of various aspects of the present invention will now be described in detail. To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely intended to explain the present invention and not to limit the present invention. For those skilled in the art, the present invention can be practiced without some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the invention.

[0034] like Figures 1 to 3As shown, the present invention provides a magnetic particle testing clamping fixture, which includes a guide device 1, a first clamping device 2, a second clamping device 3, and a support device 4. The first clamping device 2 and the second clamping device 3 are spaced apart along the length of the guide device 1. The first clamping device 2 includes a first driving mechanism 21 and a first clamping mechanism 22. The first driving mechanism 21 is fixedly installed on the guide device 1, and the first clamping mechanism 22 is fixedly installed on the first driving mechanism 21. The first driving mechanism 21 can drive the first clamping mechanism 22 to rotate circumferentially. The second clamping device 3 includes a second driving mechanism 31 and a second clamping mechanism 32. The second driving mechanism 31 is fixedly mounted on the guide device 1, and the second clamping mechanism 32 is rotatably mounted on the second driving mechanism 31. The second driving mechanism 31 can drive the second clamping mechanism 32 to move linearly along the length of the guide device 1. The axis of the second clamping mechanism 32 coincides with the axis of the first clamping mechanism 22 and both extend along the length of the guide device 1. The second clamping mechanism 32 and the first clamping mechanism 22 can horizontally clamp the long cylindrical component 7 at both axial ends. The support device 4 is located between the first clamping mechanism 22 and the second clamping mechanism 32 and is used to support the long cylindrical component 7.

[0035] Specifically, the worker can lift the long cylindrical component 7 between the first clamping mechanism 22 and the second clamping mechanism 32, and place the long cylindrical component 7 on the support device 4. Then, the second drive mechanism 31 drives the second clamping mechanism 32 to move towards the first clamping mechanism 22, so that the two circumferential ends of the long cylindrical component 7 are clamped by the first clamping mechanism 22 and the second clamping mechanism 32 respectively. At this time, the axis of the long cylindrical component 7 extends along the length direction of the guide device 1, that is, the long cylindrical component 7 is placed horizontally. Then, the first drive mechanism 21 drives the first clamping mechanism 22 to rotate, and the first clamping mechanism 22 can drive the long cylindrical component 7 to rotate circumferentially. Then, the worker can easily spray magnetic suspension liquid onto the horizontally placed long cylindrical component 7. Therefore, the magnetic particle inspection clamping fixture of the present invention reduces the difficulty of spraying magnetic suspension liquid onto long cylindrical components.

[0036] In some embodiments, the support device 4 can be removed to prevent it from excessively hindering the rotation of the long cylindrical component 7. In other embodiments, the support portion of the support device 4 is provided with a protective pad to prevent frictional damage to the long cylindrical component 7.

[0037] like Figures 1 to 2As shown, in some embodiments of the present invention, the guide device 1 includes two parallel tracks 11, a first drive mechanism 21 and a second drive mechanism 31 are respectively fixedly installed at both ends of the tracks 11 in their length direction, and a support device 4 is located between the two tracks 11. The guide rail has a simple structure, which helps to reduce manufacturing costs.

[0038] Of course, the guide device 1 can also be any other structural form that can achieve the above-mentioned technical effects, and the present invention does not limit it.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, in some embodiments of the present invention, the guide device 1 further includes a telescopic frame 12, which includes two first sleeves 121 and two first telescopic rods 122. The two first sleeves 121 are fixed between two tracks 11 and are spaced apart in the width direction of the guide device 1. The axis of the first sleeves 121 extends along the length direction of the guide device 1. The rear sections of the two first telescopic rods 122 are respectively movably inserted into the two first sleeves 121. The front section of the first telescopic rod 122 is located outside the corresponding first sleeve 121. The support device 4 is connected to the end of the front section of the first telescopic rod 122. A first traveling wheel 123 is provided on the outer side of the front section of the first telescopic rod 122. The axis of the first traveling wheel 123 extends along the width direction of the guide device 1 and the first traveling wheel 123 can roll along the track 11 on the ground. The top of the first sleeve 121 is provided with a first connecting sleeve 124, and a first limiting rod 125 is threadedly connected to the first connecting sleeve 124. The top end of the first limiting rod 125 is located above the first connecting sleeve 124, and a first rotating plate 126 is provided on the top of the first limiting rod 125. The bottom end of the first limiting rod 125 moves through the cylinder wall of the first connecting sleeve 124 and can contact the top of the corresponding first telescopic rod 122.

[0040] Specifically, the bottom of the first limiting rod 125 presses against the top of the first telescopic rod 122 to fix the first telescopic rod 122 in the first sleeve 121. When it is necessary to change the length of the first telescopic rod 122 extending out of the first sleeve 121, the first rotating plate 126 is rotated, and the first limiting rod 125 moves away from the first telescopic rod 122. Then, the length of the first telescopic rod 122 extending out of the first sleeve 121 is adjusted, and the first traveling wheel 123 can reduce the resistance when the first telescopic rod 122 moves. Then, the first rotating plate 126 is rotated in the opposite direction, so that the bottom of the first limiting rod 125 presses against the top of the first telescopic rod 122 again, thereby re-fixing the first telescopic rod 122. By adjusting the length of the first telescopic rod 122 extending out of the first sleeve 121, the position of the support device 4 can be adjusted, thereby facilitating the support of long cylindrical parts 7.

[0041] like Figures 1 to 3 As shown, in some embodiments of the present invention, the first driving mechanism 21 includes a first driving motor 212 and a transmission shaft 211. The first driving motor 212 is fixedly mounted on the end of the track 11, and the first end of the transmission shaft 211 is connected to the output shaft of the first driving motor 212. The first clamping mechanism 22 includes a first clamping disc 221, which is fixedly connected to the end of the transmission shaft 211. The first driving motor 212 can drive the first clamping disc 221 to rotate circumferentially around its axis through the transmission shaft 211. The axis of the transmission shaft 211, the axis of the first clamping disc 221, and the axis of the second clamping mechanism 32 coincide and all extend along the length direction of the guide device 1. The axis of the first clamping disc 221 is located above the guide device 1.

[0042] Specifically, the operator first lifts the long cylindrical component 7 between the second clamping mechanism 32 and the first clamping plate 221. Then, the second drive mechanism 31 drives the second clamping mechanism 32 to move towards the first clamping plate 221, thereby clamping the long cylindrical component 7 between the second clamping mechanism 32 and the first clamping plate 221. The support device 4 supports the long cylindrical component 7. Then, the first drive motor 212 can drive the first clamping plate 221 to rotate circumferentially around its axis through the transmission shaft 211. The first clamping plate 221 can drive the long cylindrical component 7 to rotate axially, thereby facilitating the spraying of the outer circumferential surface of the long cylindrical component 7.

[0043] In some embodiments, the first drive mechanism 21 may also include a common gearbox, which further includes a housing and a gear transmission mechanism installed in the housing. The housing is fixedly installed at the end of the track 11, and the first drive motor 212 is connected to the drive shaft 211 through the gear transmission mechanism in the housing to drive the drive shaft 211 to rotate circumferentially.

[0044] Of course, the first driving mechanism 21 and the first clamping mechanism 22 can also be any other structural form that can achieve the above-mentioned technical effects, and the present invention does not limit them.

[0045] like Figures 1 to 2As shown, in some embodiments of the present invention, the first clamping mechanism 22 further includes an end fixing mechanism, which further includes two fixing blocks 223, two connecting bolts 224, and two clamping blocks 225. The two fixing blocks 223 are respectively fixedly connected to the top and bottom surfaces of the first clamping plate 221. The two connecting bolts 224 pass vertically through the two fixing blocks 223 and are threadedly connected to the corresponding fixing blocks 223. The two clamping blocks 225 are respectively threaded to the ends of the two connecting bolts 224 to be used for radially clamping the ends of the long cylindrical parts 7. The two clamping blocks 225 are located between the first clamping plate 221 and the second clamping mechanism 32, and the side of the clamping block 225 facing the long cylindrical parts 7 is set as an arc surface.

[0046] Specifically, after the second clamping mechanism 32 and the first clamping disc 221 axially clamp the long cylindrical component 7, the two connecting bolts 224 can be rotated, and the two clamping blocks 225 move toward the long cylindrical component 7 until the two clamping blocks 225 clamp the end of the long cylindrical component 7, thereby further fixing the long cylindrical component 7 and preventing it from tilting or loosening. Preferably, the side of the clamping block 225 facing the long cylindrical component 7 is provided with a rubber layer to prevent damage to the outer circumferential surface of the long cylindrical component 7.

[0047] like Figures 1 to 2 As shown, in some embodiments of the present invention, the second driving mechanism 31 includes a first fixed plate 311, a first driving cylinder 312, and a connecting shaft 313. The first fixed plate 311 is fixedly connected to the end of the track 11 and extends vertically. The cylinder body of the first driving cylinder 312 is fixedly connected to the first fixed plate 311, and the driving rod of the first driving cylinder 312 is fixedly connected to the beginning end of the connecting shaft 313. The second clamping mechanism 32 includes a second clamping disc 321, which is rotatably connected to the end of the connecting shaft 313. The axis of the second clamping disc 321, the axis of the connecting shaft 313, the axis of the first driving cylinder 312, and the axis of the first clamping disc 321 coincide and all extend along the length direction of the guide device 1.

[0048] Specifically, the first drive cylinder 312 can drive the connecting shaft 313 to move linearly, and the connecting shaft 313 can drive the second clamping plate 321 to move linearly. The second clamping plate 321 is rotatably connected to the end of the connecting shaft 313, so after the second clamping plate 321 and the first clamping plate 221 clamp the long cylindrical part 7, the second clamping plate 321 can rotate circumferentially around its axis under the drive of the first drive motor 212.

[0049] Of course, the second driving mechanism 31 and the second clamping mechanism 32 can also be any other structural form that can achieve the above-mentioned technical effects, and the present invention does not limit them. In addition, the second clamping plate 321 can be rotatably connected to the connecting shaft 313 in any structural form to achieve the above-mentioned technical effects, and the present invention does not limit it. For example, the second clamping plate 321 has a shaft hole at its center, and the connecting shaft 313 is connected to the shaft hole through a radial bearing; a pressing block is provided around the connecting shaft 313, and a thrust bearing is installed between the side of the second clamping plate 321 facing the first driving cylinder 312 and the pressing block, and the thrust bearing surrounds the connecting shaft 313; through the radial bearing and the thrust bearing, the second clamping plate 321 can rotate relative to the connecting shaft 313.

[0050] like Figures 1 to 2 As shown, in some embodiments of the present invention, the second drive mechanism 31 further includes a support frame 314. The support frame 314 includes a second fixed plate 315 and a bracket 316. The bracket 316 is located between two tracks 11. A set of second traveling wheels 317 are respectively provided on two sides of the bracket 316 in the width direction of the guide device 1. The axis of the second traveling wheels 317 extends along the width direction of the guide device 1, and the second traveling wheels 317 can roll on the ground along the tracks 11. The second fixed plate 315 is fixedly connected to the bracket 316 and extends vertically. The connecting shaft 313 passes through the second fixed plate 315 and is fixedly connected to the second fixed plate 315. The second fixed plate 315 is located between the first end and the end of the connecting shaft 313. Based on the drive of the first drive cylinder 312, the connecting shaft 313 can drive the support frame 314 to reciprocate.

[0051] Specifically, during the process of the first drive cylinder 312 driving the second clamping plate 321 to move linearly, the connecting shaft 313 can drive the support frame 314 to move, and the support frame 314 can support the connecting shaft 313, thereby stabilizing the position of the connecting shaft 313 and the second clamping plate 321 and enhancing the clamping effect of the second clamping plate 321.

[0052] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in some embodiments of the present invention, the support device 4 includes a guide plate 41, two second sleeves 42, two second telescopic rods 43, and two rollers 44. The guide plate 41 is fixedly connected to one end of the bracket 316 facing the first clamping plate 221 and extends vertically. The guide plate 41 is provided with two arc-shaped guide holes 411 and two positioning holes, and the two positioning holes are respectively located at the center of the two guide holes 411. The side of the second sleeve 42 is provided with a first threaded post 421 and a second threaded post 422. The first threaded post 421 passes through one of the positioning holes, and the second threaded post 422 passes through one of the guide holes 411. Nuts are threadedly connected to the first threaded post 421 and the second threaded post 422 respectively. The nuts and the second sleeve 42 are respectively located on both sides of the guide plate 41. The axis of the first threaded post 421 and the axis of the second threaded post 422 extend along the length direction of the guide device 1. The second sleeve 42 can rotate around the axis of the first threaded post 421 and along the corresponding guide hole 411, and the distance between the two second sleeves 42 gradually increases from top to bottom. Two second telescopic rods 43 axially move through two second sleeves 42 respectively. The axis of the second telescopic rod 43 intersects the axis of the first clamping plate 221. The distance between the two second telescopic rods 43 gradually increases from top to bottom. Two rollers 44 are respectively installed at the top of the two second telescopic rods 43. The rollers 44 are located above the second sleeves 42. The axis of the rollers 44 extends along the length of the guide device 1. An elastic layer is provided on the outer circumferential surface of the rollers 44. A second connecting cylinder 423 is also provided on the side of the second sleeve 42. A second limiting rod 424 is threadedly connected in the second connecting cylinder 423. The top of the second limiting rod 424 is located outside the second connecting cylinder 423. A second rotating plate 425 is provided at the top of the second limiting rod 424. The bottom end of the second limiting rod 424 moves through the cylinder wall of the second sleeve 42 and can contact the side of the corresponding second telescopic rod 43.

[0053] Specifically, when adjusting the position of the second sleeve 42, loosen the two nuts, then move the second threaded post 422 along the guide hole 411 until it reaches the target position. Then tighten the two nuts to fix the second sleeve 42 in the new position on the guide plate 41. When adjusting the length of the second telescopic rod 43 extending beyond the second sleeve 42, rotate the second rotating plate 425 to move the bottom end of the second limiting rod 424 away from the second telescopic rod 43. Then adjust the length of the second telescopic rod 43 extending beyond the second sleeve 42. Then rotate the second rotating plate 425 in the opposite direction to press the bottom end of the second limiting rod 424 against the side of the second telescopic rod 43, thereby fixing the second telescopic rod 43. By adjusting the position of the second sleeve 42 and the length of the second telescopic rod 43 extending beyond the second sleeve 42, support can be provided for long cylindrical parts 7 of different sizes, expanding the range of applications; it can also be used to prevent obstruction of the rotation of long cylindrical parts 7. In addition, the roller 44 contacts the outer peripheral surface of the long cylindrical component 7, so the roller 44 will also rotate during the rotation of the long cylindrical component 7, thereby reducing the friction between the long cylindrical component 7 and the support device 4. Moreover, the surface of the roller 44 is provided with an elastic layer, which further protects the outer peripheral surface of the long cylindrical component 7.

[0054] In some embodiments, the magnetic particle inspection clamping fixture includes two support devices 4, one of which is fixedly connected to one end of the bracket 316 facing the first clamping plate 221, and the other support device 4 is connected to the end of the front section of the first telescopic rod 122. In other embodiments, the guide plate 41 of one support device 4 is detachably connected to one end of the bracket 316 facing the first clamping plate 221, and the guide plate 41 of the other support device 4 is detachably connected to the end of the front section of the first telescopic rod 122, so as to remove the support device 4 before the long cylindrical component 7 rotates, thereby minimizing friction.

[0055] like Figure 1 , Figure 2 and Figure 7As shown, in some embodiments of the present invention, the magnetic particle detection clamping fixture further includes a spraying device 5. The spraying device 5 includes a nozzle 51, a magnetic suspension supply mechanism 52, a moving block 53, a lead screw 54, a guide rod 55, a second drive motor 56, and two support rods 57. The support rods 57 are fixedly connected to the same track 11. The two support rods 57 are spaced apart along the length direction of the guide device 1. The two ends of the lead screw 54 are rotatably connected to the top ends of the two support rods 57, and the two ends of the guide rod 55 are fixedly connected to the top ends of the two support rods 57. The length direction of the lead screw 54, the length direction of the guide rod 55, and the length direction of the guide device 1 are consistent. The lead screw 54 and the guide rod 55 are spaced apart in the width direction of the guide device 1. The second drive motor 56 is fixedly connected to the top of one of the support rods 57. The drive shaft of the second drive motor 56 is connected to the end of the lead screw 54 to drive the lead screw 54 to rotate circumferentially; the lead screw 54 passes through the moving block 53 and is threadedly connected to the moving block 53; the bottom of the moving block 53 is provided with a mounting groove; the top of the guide rod 55 is movably installed in the mounting groove; the nozzle 51 is installed on the moving block 53 and can spray magnetic suspension liquid toward the long cylindrical component 7; the magnetic suspension liquid supply mechanism 52 is located at the end of one of the tracks 11; the magnetic suspension liquid supply mechanism 52 is connected to the nozzle 51 and can supply magnetic suspension liquid to the nozzle 51.

[0056] Specifically, the second drive motor 56 can drive the lead screw 54 to rotate in the forward or reverse direction, thereby enabling the moving block 53 to move linearly along the lead screw 54 and the guide rod 55. The moving block 53 can drive the nozzle 51 to move back and forth. The magnetic suspension supply mechanism 52 is connected to the nozzle 51 and can supply magnetic suspension to the nozzle 51. The nozzle 51 can spray magnetic suspension onto the long cylindrical part 7 that rotates circumferentially. Therefore, the spraying device 5 can replace manual labor in spraying long cylindrical parts 7, reducing labor intensity.

[0057] In some embodiments, the magnetic suspension supply mechanism 52 may include a delivery pump and a storage tank containing magnetic suspension. The storage tank is connected to the nozzle 51 via the delivery pump. Of course, the magnetic suspension supply mechanism 52 may also have other structural forms, and this invention is not limiting.

[0058] In some embodiments, a magnetic particle flaw detector may also be installed on the movable block 53, which can perform flaw detection on long cylindrical parts 7 coated with magnetic suspension. Of course, the present invention may choose any magnetic particle flaw detector capable of achieving the above functions, and the present invention is not limited thereto.

[0059] like Figure 1 , Figure 2 and Figure 6As shown, in some embodiments of the present invention, the magnetic particle inspection clamping fixture further includes a conveying mechanism 6, two slide rails 58, and two second drive cylinders 59. The ends of the two slide rails 58 are fixedly mounted on the top of the same track 11. The two slide rails 58 are spaced apart along the length of the guide device 1, and the beginnings of the slide rails 58 are located outside the guide device 1. The top of each slide rail 58 has a groove extending along the width of the guide device 1. The bottom ends of two support rods 57 are movably mounted in the two grooves. The second drive cylinders 59 are located above the grooves, and the cylinder bodies of the two second drive cylinders 59 are fixedly connected to the beginnings of the two slide rails 58, and the drive rods of the second drive cylinders 59 are connected to the corresponding support rods 57. The second drive cylinders 59 can drive the support rods 57 to reciprocate along the slide rails 58. The conveying mechanism 6 includes a first mounting rod 61, a lifting plate 62, a pressing rod 63, a pressing block 64, two second mounting rods 65, two third mounting rods 66, and two fourth mounting rods 67. The first mounting rod 61 is detachably connected to the moving block 53. The second mounting rod 65 includes a first rod segment 651 and a second rod segment 652. The top ends of the two first rod segments 651 are respectively fixedly connected to the first mounting rod 61. The two first rod segments 651 are spaced apart in the length direction of the guide device 1. The bottom end of the first rod segment 651 is lower than the top end of the first rod segment 651, and the horizontal distance between the first rod segment 651 and the lead screw 54 gradually increases from its top end to its bottom end. The top end of the second rod segment 652 is fixedly connected to the bottom end of the first rod segment 651. The bottom end of the second rod segment 652 is lower than the top end of the second rod segment 652, and the horizontal distance between the second rod segment 652 and the lead screw 54 gradually increases from its top end to its bottom end. The second rod segment 652 and the first rod segment 651 form an obtuse angle with the opening facing the track 11. The upper sections of the two third mounting rods 66 are respectively movably inserted into the two second rod sections 652. The bottom ends of the third mounting rods 66 are located below the second rod sections 652. The bottom ends of the third mounting rods 66 are connected to the second rod sections 652 through the third drive cylinder 68. The axis of the third mounting rods 66 is parallel to the axis of the third drive cylinder 68. The lifting plate 62 is fixedly installed on the outside of the bottom ends of the two third mounting rods 66 and has a horizontal lifting surface. The top ends of the two fourth mounting rods 67 are respectively fixedly installed on the inside of the two second rod sections 652. The bottom ends of the fourth mounting rods 67 are lower than the top ends of the fourth mounting rods 67, and the top ends of the fourth mounting rods 67 are higher than the bottom ends of the third mounting rods 66. The horizontal distance between the fourth mounting rods 67 and the lead screw 54 gradually decreases from its top end to its bottom end. The pressing rod 63 is fixedly connected to the bottom ends of the two fourth mounting rods 67. A pressing block 64 is installed on the side of the pressing rod 63 facing the third mounting rod 66.

[0060] Specifically, when inspecting the long cylindrical component 7, the operator first places the long cylindrical component 7 onto the lifting surface of the lifting plate 62. Then, the second drive cylinder 59 drives the support rod 57 to move away from the first clamping device 2 and the second clamping device 3. The support rod 57 drives the transport mechanism 6 to move towards the area between the first clamping device 2 and the second clamping device 3. When the transport mechanism 6 moves the long cylindrical component 7 between the first clamping device 2 and the second clamping device 3, the first drive cylinder 312 drives the second clamping plate 321 to move a preset distance towards the long cylindrical component 7 so that the support device 4 can support the long cylindrical component 7 in subsequent processes. Then, the length of the third drive cylinder 68 shortens, and the lifting plate 62 drives the long cylindrical component 7 to tilt upwards. During the movement of the long cylindrical component 7... In the process, the long cylindrical component 7 gradually comes into contact with the pressing block 64, and the pressing block 64 pushes the long cylindrical component 7 until the long cylindrical component 7 rolls onto the two support devices 4; then the first drive cylinder 312 drives the second clamping plate 321 to move until the second clamping plate 321 and the first clamping plate 221 clamp the long cylindrical component 7; then the two connecting bolts 224 are adjusted so that the two clamping blocks 225 clamp the end of the long cylindrical component 7; then the first drive motor 212 drives the first clamping plate 221 to rotate, and the first clamping plate 221 drives the long cylindrical component 7 to rotate; then the outer circumferential surface of the long cylindrical component 7 can be sprayed with magnetic suspension liquid by manual spraying or automatic spraying by the spray nozzle 51; finally, the outer circumferential surface of the long cylindrical component 7 is inspected by a magnetic particle flaw detector.

[0061] In this embodiment, the handling mechanism 6 can assist workers in handling long cylindrical parts 7, which can reduce the number of workers and thus reduce production costs, reduce labor intensity, and play a positive role in emergency situations where there is a severe shortage of workers.

[0062] In some embodiments of the present invention, the magnetic particle inspection clamping fixture may further include a controller. The first clamping device 2, the second clamping device 3, the spraying device 5, and the conveying mechanism 6 are respectively signal-connected to the controller, which can control their start or stop. For example, the controller can control the start or stop of the first drive motor 212 of the first drive mechanism 21, the first drive cylinder 312, the second drive motor 56, the second drive cylinder 59, and the third drive cylinder 68 of the second drive mechanism 31. The controller also has an operation panel to facilitate the operator to send instructions to each device or mechanism. Of course, the controller can adopt a control device commonly used in the art, and the present invention is not limited thereto.

[0063] In other embodiments of the present invention, the magnetic particle inspection clamping fixture may not be equipped with a controller, and the operator may individually control the start and stop of the first clamping device 2, the second clamping device 3, the spraying device 5 and the conveying mechanism 6.

[0064] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the present invention to other occasions without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A magnetic particle testing clamping fixture, characterized in that, It includes a guide device (1), a first clamping device (2), a second clamping device (3), and a support device (4), wherein the first clamping device (2) and the second clamping device (3) are distributed at intervals along the length direction of the guide device (1); The first clamping device (2) includes a first driving mechanism (21) and a first clamping mechanism (22). The first driving mechanism (21) is fixedly installed on the guide device (1), and the first clamping mechanism (22) is fixedly installed on the first driving mechanism (21). The first driving mechanism (21) can drive the first clamping mechanism (22) to rotate circumferentially. The second clamping device (3) includes a second driving mechanism (31) and a second clamping mechanism (32). The second driving mechanism (31) is fixedly installed on the guide device (1). The second clamping mechanism (32) is rotatably installed on the second driving mechanism (31). The second driving mechanism (31) can drive the second clamping mechanism (32) to move linearly in the length direction of the guide device (1). The axis of the second clamping mechanism (32) coincides with the axis of the first clamping mechanism (22) and both extend along the length direction of the guide device (1). The second clamping mechanism (32) and the first clamping mechanism (22) can be horizontally clamped at both ends of the axial direction of the long cylindrical component. The support device (4) is located between the first clamping mechanism (22) and the second clamping mechanism (32) and is used to support long cylindrical parts; The guiding device (1) includes two parallel tracks (11). The magnetic particle detection clamping fixture also includes a spraying device (5), which includes a nozzle (51), a moving block (53), a lead screw (54), and two support rods (57). The support rods (57) are fixedly connected to the same track (11), and the two support rods (57) are spaced apart along the length of the guide device (1). The two ends of the lead screw (54) are rotatably connected to the top ends of the two support rods (57), the lead screw (54) passes through the moving block (53) and is threadedly connected to the moving block (53). The nozzle (51) is installed on the moving block (53) and can spray magnetic suspension liquid toward long cylindrical parts. The magnetic particle inspection clamping fixture also includes a conveying mechanism (6), two slide rails (58), and two second drive cylinders (59); the ends of the two slide rails (58) are fixedly installed on the top of the same track (11), the two slide rails (58) are spaced apart in the length direction of the guide device (1), the beginning of the slide rails (58) is located outside the guide device (1), the top of the slide rails (58) is provided with a groove, the groove extends along the width direction of the guide device (1); the bottom ends of the two support rods (57) are respectively movably installed in the two grooves; the second drive cylinders (59) are located above the grooves, and the cylinders of the two second drive cylinders (59) are... The bodies are respectively fixedly connected to the first ends of the two slide rails (58), and the drive rod of the second drive cylinder (59) is connected to the corresponding support rod (57); the second drive cylinder (59) can drive the support rod (57) to reciprocate along the slide rail (58); the conveying mechanism (6) includes a first mounting rod (61), a lifting plate (62), a pressing rod (63), a pressing block (64), two second mounting rods (65), two third mounting rods (66) and two fourth mounting rods (67); the first mounting rod (61) is detachably connected to the moving block (53), and the second mounting rod (65) includes a first rod segment (651) and a second rod segment (652), and the two The top ends of the first rod segments (651) are fixedly connected to the first mounting rod (61), and the two first rod segments (651) are spaced apart along the length of the guide device (1). The bottom end of the first rod segment (651) is lower than the top end of the first rod segment (651), and the horizontal distance between the first rod segment (651) and the lead screw (54) gradually increases from its top end to its bottom end. The top end of the second rod segment (652) is fixedly connected to the bottom end of the first rod segment (651), and the bottom end of the second rod segment (652) is lower than the top end of the second rod segment (652), and the horizontal distance between the second rod segment (652) and the lead screw (54) gradually increases from its top end to its bottom end. Furthermore, the second rod segment (652) and the first rod segment (651) form an obtuse angle with the opening facing the track (11); the upper sections of the two third mounting rods (66) are respectively movably inserted into the two second rod segments (652), the bottom end of the third mounting rod (66) is located below the second rod segment (652), the bottom end of the third mounting rod (66) is connected to the second rod segment (652) through the third driving cylinder (68), and the axis of the third mounting rod (66) is parallel to the axis of the third driving cylinder (68); the lifting plate (62) is fixedly installed on the outside of the bottom ends of the two third mounting rods (66), and the lifting plate (62) has a horizontal lifting surface;The top ends of the two fourth mounting rods (67) are respectively fixedly installed on the inner sides of the two second rod segments (652). The bottom end of the fourth mounting rod (67) is lower than the top end of the fourth mounting rod (67), and the top end of the fourth mounting rod (67) is higher than the bottom end of the third mounting rod (66). The horizontal distance between the fourth mounting rod (67) and the lead screw (54) gradually decreases from its top end to its bottom end. The pressing rod (63) is fixedly connected to the bottom ends of the two fourth mounting rods (67). The pressing block (64) is installed on the side of the pressing rod (63) facing the third mounting rod (66).

2. The magnetic particle testing clamping fixture according to claim 1, characterized in that, The first drive mechanism (21) and the second drive mechanism (31) are respectively fixedly installed at both ends of the track (11) in its length direction, and the support device (4) is located between the two tracks (11).

3. The magnetic particle testing clamping fixture according to claim 2, characterized in that, The guide device (1) further includes a telescopic frame (12), which includes two first sleeves (121) and two first telescopic rods (122). The two first sleeves (121) are fixed between the two tracks (11). The two first sleeves (121) are spaced apart in the width direction of the guide device (1). The axis of the first sleeves (121) extends along the length direction of the guide device (1). The rear sections of the two first telescopic rods (122) are respectively movably inserted into the two first sleeves (121). The front section of the first telescopic rod (122) is located outside the corresponding first sleeve (121). The support device (4) is connected to the end of the front section of the first telescopic rod (122). The outer side of the front section of the first telescopic rod (122) is provided with a first traveling wheel (123). The axis of the first traveling wheel (123) extends along the width direction of the guide device (1). The first traveling wheel (123) can roll along the track (11) on the ground. The top of the first sleeve (121) is provided with a first connecting cylinder (124), and a first limiting rod (125) is threadedly connected in the first connecting cylinder (124). The top end of the first limiting rod (125) is located above the first connecting cylinder (124). The top of the first limiting rod (125) is provided with a first rotating plate (126). The bottom end of the first limiting rod (125) moves through the cylinder wall of the first connecting cylinder (124) and can contact the top of the corresponding first telescopic rod (122).

4. The magnetic particle testing clamping fixture according to claim 2, characterized in that, The first drive mechanism (21) includes a first drive motor (212) and a transmission shaft (211). The first drive motor (212) is fixedly installed at the end of the track (11), and the first end of the transmission shaft (211) is connected to the output shaft of the first drive motor (212). The first clamping mechanism (22) includes a first clamping disc (221), which is fixedly connected to the end of the transmission shaft (211). The first drive motor (212) can drive the first clamping disc (221) to rotate circumferentially around its axis through the transmission shaft (211). The axis of the transmission shaft (211), the axis of the first clamping disc (221), and the axis of the second clamping mechanism (32) coincide and all extend along the length direction of the guide device (1). The axis of the first clamping disc (221) is located above the guide device (1).

5. The magnetic particle testing clamping fixture according to claim 4, characterized in that, The first clamping mechanism (22) further includes an end fixing mechanism, which further includes two fixing blocks (223), two connecting bolts (224) and two clamping blocks (225). The two fixing blocks (223) are respectively fixedly connected to the top and bottom surfaces of the first clamping plate (221). The two connecting bolts (224) pass vertically through the two fixing blocks (223) respectively, and the connecting bolts (224) are threadedly connected to the corresponding fixing blocks (223). The two clamping blocks (225) are respectively threadedly connected to the ends of the two connecting bolts (224) to be used for radially clamping the ends of long cylindrical parts. The two clamping blocks (225) are located between the first clamping plate (221) and the second clamping mechanism (32). The side of the clamping block (225) facing the long cylindrical part is set as an arc surface.

6. The magnetic particle testing clamping fixture according to claim 4, characterized in that, The second drive mechanism (31) includes a first fixed plate (311), a first drive cylinder (312), and a connecting shaft (313). The first fixed plate (311) is fixedly connected to the end of the track (11) and extends vertically. The cylinder body of the first drive cylinder (312) is fixedly connected to the first fixed plate (311). The drive rod of the first drive cylinder (312) is fixedly connected to the head end of the connecting shaft (313). The second clamping mechanism (32) includes a second clamping disc (321), which is rotatably connected to the end of the connecting shaft (313). The axis of the second clamping disc (321), the axis of the connecting shaft (313), the axis of the first driving cylinder (312), and the axis of the first clamping disc (221) coincide and all extend along the length direction of the guide device (1).

7. The magnetic particle testing clamping fixture according to claim 6, characterized in that, The second drive mechanism (31) further includes a support frame (314), which includes a second fixed plate (315) and a bracket (316). The bracket (316) is located between the two tracks (11). The bracket (316) is provided with a set of second traveling wheels (317) on each of the two sides of the guide device (1) in the width direction. The axis of the second traveling wheels (317) extends along the width direction of the guide device (1). The second traveling wheels (317) can roll along the track (11) on the ground. The second fixing plate (315) is fixedly connected to the bracket (316) and extends vertically. The connecting shaft (313) passes through the second fixing plate (315) and is fixedly connected to the second fixing plate (315). The second fixing plate (315) is located between the first end and the last end of the connecting shaft (313). Among them, based on the drive of the first drive cylinder (312), the connecting shaft (313) can drive the support frame (314) to reciprocate.

8. The magnetic particle testing clamping fixture according to claim 7, characterized in that, The support device (4) includes a guide plate (41), two second sleeves (42), two second telescopic rods (43) and two rollers (44). The guide plate (41) is fixedly connected to the end of the bracket (316) facing the first clamping plate (221) and extends vertically. The guide plate (41) is provided with two arc-shaped guide holes (411) and two positioning holes, with the two positioning holes located at the centers of the two guide holes (411). The side of the second sleeve (42) is provided with a first threaded post (421) and a second threaded post (422). The first threaded post (421) passes through one of the positioning holes, and the second threaded post (422) passes through one of the guide holes (411). 1) Nuts are threaded onto the first threaded post (421) and the second threaded post (422), respectively. The nuts and the second sleeve (42) are located on both sides of the guide plate (41). The axis of the first threaded post (421) and the axis of the second threaded post (422) extend along the length direction of the guide device (1). The second sleeve (42) can rotate around the axis of the first threaded post (421) and along the corresponding guide hole (411). The distance between the two second sleeves (42) gradually increases from top to bottom. Two second telescopic rods (43) respectively axially move through two second sleeves (42), the axis of the second telescopic rods (43) intersects the axis of the first clamping plate (221), the distance between the two second telescopic rods (43) gradually increases from top to bottom, two rollers (44) are respectively installed at the top of the two second telescopic rods (43), the rollers (44) are located above the second sleeves (42), the axis of the rollers (44) extends along the length direction of the guide device (1), and the outer circumferential surface of the rollers (44) is provided with an elastic layer; The second sleeve (42) is also provided with a second connecting cylinder (423) on its side. A second limiting rod (424) is threadedly connected to the second connecting cylinder (423). The top end of the second limiting rod (424) is located outside the second connecting cylinder (423). A second rotating plate (425) is provided at the top end of the second limiting rod (424). The bottom end of the second limiting rod (424) moves through the cylinder wall of the second sleeve (42) and can contact the side of the corresponding second telescopic rod (43).

9. The magnetic particle testing clamping fixture according to claim 8, characterized in that, The spraying device (5) includes a magnetic suspension liquid supply mechanism (52), a guide rod (55), and a second drive motor (56); The two ends of the guide rod (55) are fixedly connected to the top ends of the two support rods (57), respectively. The length direction of the lead screw (54), the length direction of the guide rod (55) and the length direction of the guide device (1) are consistent. The lead screw (54) and the guide rod (55) are spaced apart in the width direction of the guide device (1). The second drive motor (56) is fixedly connected to the top of one of the support rods (57). The drive shaft of the second drive motor (56) is connected to the end of the lead screw (54) so ​​as to drive the lead screw (54) to rotate circumferentially. The bottom of the moving block (53) is provided with a mounting groove. The top of the guide rod (55) is movably installed in the mounting groove. The magnetic suspension liquid providing mechanism (52) is located at the end of one of the tracks (11). The magnetic suspension liquid providing mechanism (52) is connected to the nozzle (51) and can provide magnetic suspension liquid to the nozzle (51).

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