An ultrasonic detection device for detecting fatigue damage of materials

Abstract

The present invention discloses an ultrasonic detection device for material fatigue damage detection, which relates to the technical field of material fatigue damage detection. It includes a detection box. A clamping table and a centering transfer component are installed on the bottom wall of the detection box. A clamping component for fixing a material specimen to be detected is arranged inside the clamping table. The clamping component includes a clamping groove opened at the top of the clamping table. The output end of the first electric push rod is connected with a clamping frame, and the clamping frame is located in the clamping groove. A connecting block is installed inside the clamping frame, and one end of the connecting block is connected with a memory clamping plate. In the present invention, a deformation column is used to apply a force to the memory clamping plate from the outside, so that the inner wall of the memory clamping plate completely fits the outer wall of the columnar material specimen, which is beneficial to improving the clamping and fixing effect on the columnar material specimen and enhancing the stability of the material specimen during load application. The deformable memory clamping plate is provided, which is convenient for firmly clamping and fixing columnar material specimens of different sizes, and enlarges the application range of the ultrasonic detection device.

Description

Technical Field

[0001] The present invention relates to the technical field of material fatigue damage detection, and specifically provides an ultrasonic detection device for material fatigue damage detection. Background Art

[0002] In many applications, metal components subjected to cyclic or repetitive mechanical stresses will fail at values below static test levels. This process is known as fatigue failure. It is estimated that fatigue causes 90% of mechanical failures in service, leading to serious accidents. To avoid such incidents, it is necessary to detect fatigue damage in materials. When the existing ultrasonic fatigue damage detection equipment clamps and fixes a columnar material specimen, due to the single fixing fixture, the detection device cannot effectively adapt to the clamping and fixing of columnar material specimens of different sizes, reducing the applicable range of the detection device. Moreover, the traditional plate-shaped fixing fixture has a poor clamping and fixing effect, increasing the risk of movement of the columnar specimen during the application of load, which has an adverse impact on the detection accuracy.

[0003] The defects of the existing ultrasonic fatigue detection devices are as follows:

[0004] In the patent document CN110161048B, the main consideration is how to achieve imaging monitoring of the fatigue damage process inside the material specimen, without considering how to stably clamp and fix columnar specimens of different sizes;

[0005] In the application document CN119688491A, the main consideration is how to simultaneously detect the tensile strength and torsional strength, without considering how to improve the position accuracy of the columnar material specimen;

[0006] In the patent document CN106813993B, the main consideration is how to provide a more comprehensive automatic monitoring scheme for component cracks and mechanical property data during the fatigue test, thereby enriching the detection data. However, it does not consider how to improve the stability during the placement of the columnar material specimen, and thus improve the placement accuracy;

[0007] In the patent document CN114323996A, the main consideration is how to achieve fatigue detection of the material specimen through acoustic radiation, but it does not consider how to comprehensively and effectively cool the specimen during the detection process. Summary of the Invention

[0008] The purpose of the present invention is to provide an ultrasonic detection device for material fatigue damage detection to solve the problems raised in the above background art.

[0009] To achieve the above object, the present invention provides the following technical solution: An ultrasonic detection device for detecting fatigue damage of materials, including a detection box. A clamping table and a centering transfer component are installed on the bottom wall of the detection box, and the centering transfer component is located on the left side of the clamping table. A clamping component for fixing the material specimen to be detected is arranged inside the clamping table;

[0010] The clamping component includes a clamping groove opened at the top of the clamping table. An electric push rod I is arranged inside the clamping table. The output end of the electric push rod I is connected with a clamping frame, and the clamping frame is located inside the clamping groove. A connecting block is installed inside the clamping frame. The end of the connecting block far away from the electric push rod I is connected with a memory clamping plate. A buffer pad is installed on the inner wall of the memory clamping plate. A telescopic cylinder is embedded and installed inside the clamping frame. An electric heating wire is installed inside the clamping frame. The telescopic cylinder is located between two adjacent groups of electric heating wires. The end of the telescopic cylinder far away from the electric push rod is connected with a deformation column, and the outer wall of the deformation column is in contact with the outer wall of the memory clamping plate. A servo motor I is installed inside the clamping table, and the servo motor I is located below the clamping groove. A rotating frame is sleeved on the outer wall of the output end of the servo motor I. An electric push rod II is installed on the top of the rotating frame. The output end of the electric push rod II is connected with a plug-in frame, and the plug-in frame penetrates through the bottom wall of the clamping groove. A micro push rod I is installed on the top wall of the deformation column. The output end of the micro push rod I is connected with a square rod, and the bottom end of the square rod can be embedded and connected to the top of the plug-in frame.

[0011] Preferably, the memory clamping plate is an arc-shaped plate. When the memory clamping plate is in its original state, its outer wall is in contact with the inner wall of the clamping frame. The number of installed groups of the servo motor I is two, and the rotation directions of the two groups of servo motor I are opposite.

[0012] Preferably, a limiting through groove is penetrated and opened at the bottom wall of the clamping groove, and the plug-in frame penetrates through the inside of the limiting through groove.

[0013] Preferably, the centering transfer component includes an electric push rod III embedded and installed on the bottom wall of the detection box. A bearing support is installed at the output end of the electric push rod III. An electric push rod IV is installed on the top of the bearing support. A transfer frame is installed at the output end of the electric push rod IV. The transfer frame is a "U" - shaped frame. The center line of the inner wall of the transfer frame facing the clamping table and the central axis of the center point of the clamping groove are on the same horizontal straight line. Electric push rods V are embedded and installed on the front and back of the transfer frame respectively. The output end of the electric push rod V is connected with a clamping plate, and the clamping plates are respectively embedded in the front and back inner walls of the transfer frame.

[0014] Preferably, a moving frame is embedded in the top of the clamping plate. An electric push rod six is installed on the top of the clamping plate, and the output end of the electric push rod six is fixedly connected to the outer wall of the right side of the moving frame. A servo motor two is installed on the top of the moving frame. The output end of the servo motor two is connected to a rotating shaft, and the bottom end of the rotating shaft is connected to a rotating cylinder. The rotating cylinder is located below the moving frame. An electric push rod seven is installed on the top wall of the rotating cylinder, and the output end of the electric push rod seven is connected to an auxiliary frame. A distance measuring sensor is embedded in the bottom of the auxiliary frame.

[0015] Preferably, a fixed frame is installed on the inner wall of the detection box. A servo motor one is installed at the bottom of the fixed frame. The outer wall of the output end of the servo motor one is sleeved with a rotating support plate. A ventilation hole is opened through the top of the rotating support plate. An electric push rod eight is installed at the bottom of the rotating support plate. The electric push rod eight is located on both sides of the ventilation hole. The output end of the electric push rod eight is connected to a cross frame. A hollow cylinder is installed through the top of the cross frame. A spiral guide plate is installed inside the hollow cylinder. An exhaust fan is installed on the outer wall of the hollow cylinder.

[0016] Preferably, a spiral tube is arranged inside the hollow cylinder, and a refrigerant is contained in the spiral tube. A temperature sensor one and a temperature sensor two are installed on the inner wall of the hollow cylinder, and the temperature sensor one is located on the right side of the temperature sensor two.

[0017] Preferably, a servo motor two is installed inside the detection box. The output end of the servo motor two is connected to a screw rod. The screw rod is located behind the centering transfer component. A bearing plate is sleeved on the outer wall of the screw rod, and the left and right outer walls of the bearing plate are embedded and connected to the inside of the detection box.

[0018] Preferably, an ultrasonic generator is installed on the top of the bearing plate. The output end of the ultrasonic generator is connected to a transducer. A vibration application head is installed at the bottom of the transducer, and the vibration application head is located above the clamping table.

[0019] Preferably, the detection box is electrically connected to a computer through a wire, and the computer is used to input test parameters and instructions.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. By installing a clamping component, the present invention applies a force to the memory clamping plate from the outside of the deformation column, causing the memory clamping plate to bend and deform, so that the inner wall of the memory clamping plate completely adheres to the outer wall of the columnar material specimen, increasing the contact area between the memory clamping plate and the surface of the columnar specimen, which is beneficial to improving the clamping and fixing effect on the columnar material specimen, enhancing the stability of the material specimen during load application. After the test is completed, the deformation column is reset, and then the air inside the clamping frame is heated by the electric heating wire, causing the memory clamping plate to restore its original state, which is convenient for reuse. By setting the deformable memory clamping plate, it is convenient to firmly clamp and fix columnar material specimens of different sizes, expanding the application range of the ultrasonic detection device.

[0022] 2. The present invention is equipped with a centering transfer component, and utilizes a clamping plate to limit the placement position of the columnar material specimen and clamp the material specimen, thereby facilitating the precise placement of the columnar material specimen to be tested, ensuring that the central axis of the material specimen to be tested, the center point of the clamping slot and the vibration applying head are located on the same vertical line, facilitating the vibration applying head to uniformly apply load to the material specimen to be tested, thereby facilitating improving the accuracy of material fatigue damage testing, and avoiding the phenomenon of repeated adjustment of the material specimen placement position due to inaccurate manual placement, thereby improving testing efficiency.

[0023] 3. The present invention uses electric push rod six to push the mobile frame to move, and then adjusts the position of the auxiliary frame so that the horizontal section of the auxiliary frame is located at the diameter position of the bottom end plane of the cylindrical section, ensuring that the auxiliary frame can provide stable support for the material specimen from the bottom, avoiding slipping, shaking, etc. during the placement of the material specimen, which may cause the axis of the material specimen to shift. Thereafter, the horizontal section of the auxiliary frame is removed from the bottom of the material specimen, and the auxiliary frame is moved upward and the electric push rod three is started again to shorten, driving the transfer frame to move downward, so that the bottom of the material specimen is fitted with the bottom wall of the clamping groove, thereby achieving smooth transfer and precise placement of the material specimen, greatly improving the accuracy of the placement of the material specimen, and thus helping to improve the accuracy of the test results.

[0024] 4. The present invention is equipped with a hollow cylinder and a spiral guide plate to cool the surface of the cylindrical material specimen through an annular flow airflow, and can cool the surface of the cylindrical material specimen at various locations, which is beneficial to improving the cooling effect. The setting of the annular airflow replaces the nozzle-type fixed-point blowing cooling, avoids applying external force to the material specimen, and is beneficial to improving the material fatigue damage test results. The spiral tube is set and loaded with refrigerant to cool the air, which is beneficial to improving the cooling effect. By setting temperature sensor 1 and temperature sensor 2, it is convenient to replace the refrigerant in time, further improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a front structural schematic diagram of the present invention;

[0026] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This is a schematic diagram of the top structure of the clamping table of the present invention;

[0028] Figure 4 This is a schematic diagram of the front structure of the clamping table of the present invention;

[0029] Figure 5 It is a schematic diagram of the structure of the rotating frame of the present invention;

[0030] Figure 6 Schematic diagram of the internal structure of the clamping frame of the present invention;

[0031] Figure 7 Schematic diagram of the memory clamping plate structure of the present invention;

[0032] Figure 8 Schematic diagram of the rotating cylinder structure of the present invention;

[0033] Figure 9 Schematic diagram of the centering transfer component structure of the present invention;

[0034] Figure 10 Schematic diagram of the hollow cylinder structure of the present invention.

[0035] In the figure: 1. Detection box; 2. Clamping table; 3. Clamping groove; 4. Electric push rod 1; 5. Clamping frame; 6. Connecting block; 7. Memory clamping plate; 8. Telescopic cylinder; 9. Deformation column; 10. Micro push rod 1; 11. Square rod; 12. Servo motor 1; 13. Rotating frame; 14. Electric push rod 2; 15. Insertion frame; 16. Electric heating wire; 17. Limit through groove; 18. Electric push rod 3; 19. Bearing support; 20. Electric push rod 4; 21. Transfer frame; 22. Electric push rod 5; 23. Clamping plate; 24. Moving frame; 25. Electric push rod 6; 26. Servo motor 2; 27. Rotating shaft; 28. Rotating cylinder; 29. Electric push rod 7; 30. Auxiliary frame; 31. Distance measuring sensor; 32. Fixed frame; 33. Servo motor 1; 34. Rotating support plate; 35. Electric push rod 8; 36. Cross frame; 37. Hollow cylinder; 38. Spiral guide plate; 39. Exhaust fan; 40. Spiral pipe; 41. Temperature sensor 1; 42. Temperature sensor 2; 43. Ventilation hole; 44. Servo motor 2; 45. Screw rod; 46. Bearing plate; 47. Ultrasonic generator; 48. Transducer; 49. Vibration application head. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "inner", "outer", "front end", "back end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, terms such as "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Please refer to Figure 1 , Figure 8 and Figure 9 , an embodiment provided by the present invention: an ultrasonic detection device for material fatigue damage detection, including a detection box 1. The detection box 1 is electrically connected to a computer through a wire. The computer is used to input test parameters and instructions. A clamping table 2 and a centering transfer component are installed on the bottom wall of the detection box 1, and the centering transfer component is located on the left side of the clamping table 2. The centering transfer component includes an electric push rod three 18 embedded in the bottom wall of the detection box 1. The output end of the electric push rod three 18 is installed with a bearing support 19. The bearing support 19 provides stable support for the electric push rod three 18. An electric push rod four 20 is installed on the top of the bearing support 19. The electric push rod four 20 is horizontally arranged. The output end of the electric push rod four 20 is installed with a transfer frame 21. The transfer frame 21 is a "U" - shaped frame, and the side of the transfer frame 21 facing the clamping table 2 is open. The center line of the inner wall of the transfer frame 21 facing the clamping table 2 and the central axis of the clamping groove 3 are on the same horizontal line. And when the electric push rod four 20 is in an unused state, the straight - line distance between the center line of the inner wall of the transfer frame 21 facing the clamping table 2 and the central axis of the clamping groove 3 is the first distance. Electric push rods five 22 are respectively embedded in the front and back of the transfer frame 21. The output ends of the electric push rods five 22 are connected with clamping plates 23, and the clamping plates 23 are respectively embedded in the front and back inner walls of the transfer frame 21.

[0040] Furthermore, the parameters of the cylindrical material test piece are input through the computer, where the parameters include the radius of the cylindrical section of the cylindrical material test piece. According to the cylindrical section radius data, the computer outputs a driving instruction to the electric push rod five 22 on the front side of the transfer frame 21, so that the electric push rod five 22 pushes the front group of clamping plates 23 to move backward until the straight-line distance between the back side of the front group of clamping plates 23 and the center line of the transfer frame 21 facing the clamping table 2 side is the radius of the cylindrical section of the material test piece. Then, the cylindrical test piece to be tested is placed in the transfer frame 21, and the outer wall of the cylindrical section of the material test piece is simultaneously fitted with the back side of the front group of clamping plates 23 and the inner wall of the transfer frame 21 facing the clamping table 2 side. Then, the electric push rod five 22 on the back side of the transfer frame 21 is driven to extend, pushing the rear group of clamping plates 23 to move forward, and fixing the material test piece to be tested by the two groups of clamping plates 23. Then, the electric push rod four 20 pushes the transfer frame 21 to move right. The push rod 3 is moved, and the moving distance is the difference between the first distance and the radius of the cylindrical section, and then the push rod 3 18 is driven to shorten, driving the push rod 4 20 and the transfer frame 21 to move downward, and the material specimen is placed in the clamping groove 3, completing the precise placement of the columnar material specimen to be tested, ensuring that the central axis of the material specimen to be tested, the center point of the clamping groove 3 and the vibration applying head 49 are located on the same vertical straight line, so that the vibration applying head 49 can apply load evenly to the material specimen to be tested, thereby helping to improve the accuracy of material fatigue damage testing, and avoiding the phenomenon of repeated adjustment of the material specimen placement position due to inaccurate manual placement, which is beneficial to improving test efficiency. After the material specimen is placed, the two groups of push rods 5 22 are shortened, driving the two groups of clamping plates 23 away from each other, and the push rod 3 18 is extended, pushing the transfer frame 21 to move upward, and then shortening the push rod 4 20, driving the transfer frame 21 to move to the left, and resetting the transfer frame 21.

[0041] See also Figure 8 and Figure 9 The present invention provides an embodiment of an ultrasonic detection device for material fatigue damage detection, comprising a mobile frame 24 embedded in the top of a clamping plate 23, the mobile frame 24 is T-shaped, and the horizontal section of the mobile frame 24 is located at the top of the clamping plate 23, the vertical section of the mobile frame 24 is located inside the clamping plate 23, the mobile frame 24 is slidably connected to the clamping plate 23, an electric push rod 6 25 is installed on the top of the clamping plate 23, and the output end of the electric push rod 6 25 is fixedly connected to the right outer wall of the mobile frame 24, and the mobile frame 24 is fixedly connected to the right outer wall of the mobile frame 24. A servo motor 26 is installed on the top, and the output end of the servo motor 26 is connected to a rotating shaft 27. The bottom end of the rotating shaft 27 is connected to a rotating cylinder 28, and the rotating cylinder 28 is located below the movable frame 24. The rotating cylinder 28 is slidably connected to the inside of the clamping plate 23. An electric push rod 7 29 is installed on the top wall of the rotating cylinder 28, and the output end of the electric push rod 7 29 is connected to an auxiliary frame 30. The auxiliary frame 30 is located below the clamping plate 23, and the auxiliary frame 30 is an L-shaped plate. A distance sensor 31 is embedded in the bottom of the auxiliary frame 30.

[0042] Further, according to the radius of the cylindrical section of the material specimen to be detected, the electric push rod six 25 is driven to move the moving frame 24, and then through the rotating shaft 27, the rotating cylinder 28 and the electric push rod seven 29, the auxiliary frame 30 is driven to move, so that the distance between the midpoint of the horizontal section of the auxiliary frame 30 and the inner wall of the side of the moving frame 24 facing the clamping table 2 is the same as the radius of the cylindrical section of the material specimen. That is, when the material specimen is placed on the inner wall of the auxiliary frame 30, the horizontal section of the auxiliary frame 30 is located at the diameter position of the bottom plane of the cylindrical section, ensuring that the auxiliary frame 30 can provide stable support for the material specimen from the bottom, and avoiding phenomena such as slipping and shaking during the placement of the material specimen, which may cause the axis of the material specimen to shift. When the electric push rod four 20 and the electric push rod three 18 drive the moving frame 24 to move rightward and downward, and place the material specimen in the clamping groove 3, the distance between the bottom of the auxiliary frame 30 and the bottom wall of the clamping groove 3 is detected by the distance measuring sensor 31 at the bottom of the auxiliary frame 30. When the distance between the two is 1 mm, the electric push rod three 18 stops shortening. First, the servo motor two 26 is started to drive the rotating shaft 27 to rotate, the rotating shaft 27 drives the rotating cylinder 28 to rotate, and then the auxiliary frame is rotated 90°, moving the horizontal section of the auxiliary frame away from the bottom of the material specimen. Then the electric push rod seven 29 shortens, driving the auxiliary frame 30 to move upward, so that the auxiliary frame 30 moves to a position close to the bottom of the clamping plate 23. After that, the electric push rod three 18 is started to shorten again, driving the transfer frame to move downward, so that the bottom of the material specimen fits with the bottom wall of the clamping groove 3, realizing the stable transfer and accurate placement of the material specimen, greatly improving the accuracy of the placement of the material specimen, and thus being beneficial to improving the accuracy of the test results.

[0043] Please refer to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown in

[0044] The clamping assembly includes a clamping groove 3 opened at the top of the clamping table 2. Inside the clamping table 2, there are four sets of electric push rods 4 installed. The output end of the electric push rod is connected to a clamping frame 5, and the clamping frame 5 is located inside the clamping groove 3. The clamping frame 5 is an arc-shaped frame with one side open. The clamping frame 5 and the electric push rod 4 are symmetrically arranged about the center of the bottom wall of the clamping groove 3. Inside the clamping frame 5, a connecting block 6 is installed. One end of the connecting block 6 away from the electric push rod 4 is connected to a memory clamping plate 7. A buffer pad is installed on the inner wall of the memory clamping plate 7. Inside the clamping frame 5, a telescopic cylinder 8 is embedded. The connection between the telescopic cylinder 8 and the inside of the clamping frame 5 is spherical. Inside the clamping frame 5, an electric heating wire 16 is installed. The telescopic cylinder 8 is located between two adjacent electric heating wires 16. The end of the telescopic cylinder 8 away from the electric push rod is connected to a deformation column 9, and the outer wall of the deformation column 9 is in contact with the outer wall of the memory clamping plate 7. There are two sets of deformation columns 9 arranged inside the clamping frame 5, and the two sets of deformation columns 9 are symmetrically arranged about the connecting block 6. Inside the clamping table 2, a servo motor 1 is installed, and the servo motor 1 is located below the clamping groove 3. A rotating frame 13 is sleeved on the outer wall of the output end of the servo motor 1. The rotating frame 13 is in a "cross" shape. At the top of the rotating frame 13, an electric push rod 2 is installed. The output end of the electric push rod 2 is connected to a plug-in frame 15. The bottom of the plug-in frame 15 is slidably connected to the top of the rotating frame 13, and the plug-in frame 15 penetrates through the bottom wall of the clamping groove 3. A limiting through groove 17 is opened through the bottom wall of the clamping groove 3, and the plug-in frame 15 passes through the inside of the limiting through groove 17. A micro push rod 1 is installed on the top wall of the deformation column 9. The output end of the micro push rod 1 is connected to a square rod 11, and the bottom end of the square rod 11 can be embedded and connected to the top of the plug-in frame 15. The memory clamping plate 7 is an arc-shaped plate, and when the memory clamping plate 7 is in its original state, its outer wall is in contact with the inner wall of the clamping frame 5. There are two sets of servo motors 1 installed, and the rotation directions of the two sets of servo motors 1 are opposite.

[0045] Further, after placing the material specimen in the clamping groove 3 through the middle transfer component and the auxiliary frame 30, the first electric push rod 4 pushes the clamping frame 5 to move towards the material specimen, so that the center line of the memory clamping plate 7 fits against the outer wall of the material specimen. Then, the second electric push rod 14 extends, pushing the plug-in frame 15 to move towards the material specimen inside the limit through groove 17, so that the plug-in frame 15 moves below the deformation groove. The first micro push rod 10 extends, pushing the square rod 11 to move downward, so that the square rod 11 penetrates through the bottom wall of the deformation column 9 and is embedded in the top of the plug-in frame 15. Then, the first servo motor 12 is started. The upper group of the first servo motors 12 drives the upper group of rotating frames 13 to rotate clockwise. Then, through the plug-in frame 15 and the square rod 11, a group of deformation columns 9 on one side of the connecting block 6 are driven to rotate. The lower group of the first servo motors 12 drives the lower group of rotating frames 13 to rotate counterclockwise. Then, through the plug-in frame 15 and the square rod 11, the deformation columns 9 on the other side of the connecting block 6 are driven to rotate. Through the two groups of reversely rotating deformation columns 9, a force is applied to the memory clamping plate 7 from the outside, causing the memory clamping plate 7 to bend and deform, so that the inner wall of the memory clamping plate 7 completely fits against the outer wall of the cylindrical material specimen, increasing the contact area between the memory clamping plate 7 and the surface of the cylindrical specimen, which is beneficial to improving the clamping and fixing effect on the cylindrical material specimen and enhancing the stability of the material specimen during load application. After the test is completed, the two groups of the first servo motors 12 are started in reverse, driving the rotating frames 13 to rotate in reverse, resetting the deformation columns 9 through the plug-in frame 15 and the square rod 11, and then heating the air inside the clamping frame 5 through the electric heating wire 16, so that the memory clamping plate 7 returns to its original state, facilitating reuse. By setting the deformable memory clamping plate 7, it is convenient to firmly clamp and fix cylindrical material specimens of different sizes, expanding the applicable range of the ultrasonic detection device.

[0046] Please refer to Figure 1 and Figure 10 As shown in FIGS. and

[0046] , an embodiment provided by the present invention is: an ultrasonic detection device for material fatigue damage detection, including a fixing frame 32 installed on the inner wall of a detection box 1. The fixing frame 32 is installed on the right inner wall of the detection box 1. A servo motor 33 is installed at the bottom of the fixing frame 32. A rotating support plate 34 is sleeved on the outer wall of the output end of the servo motor 33. A ventilation hole 43 is formed through the top of the rotating support plate 34. An eighth electric push rod 35 is installed at the bottom of the rotating support plate 34. The number of installed groups of the eighth electric push rod 35 is two, and the two groups of the eighth electric push rods 35 are respectively located on both sides of the ventilation hole 43. The output end of the eighth electric push rod 35 is connected to a cross frame 36. A hollow cylinder 37 is installed through the top of the cross frame 36. The hollow cylinder 37 is located below the ventilation hole 43. A spiral guide plate 38 is installed inside the hollow cylinder 37. An exhaust fan 39 is installed on the outer wall of the hollow cylinder 37, and the exhaust fan 39 is close to the bottom of the hollow cylinder 37.

[0047] Further, after the material specimen is clamped and fixed, the servo motor 1 33 is started to drive the rotating support plate 34 to rotate clockwise by 90°, turning the hollow cylinder 37 to directly above the material specimen. Then, the electric push rod 8 35 extends to push the cross frame 36 to drive the hollow cylinder 37 to move downward, covering the hollow cylinder 37 outside the material specimen. Moreover, the vibration application head 49 passes through the ventilation hole 43 and moves downward until it fits against the top of the material specimen. During the process of applying a load to the material specimen by the vibration application head 49 for material fatigue damage testing, the material specimen generates heat. Through the operation of the exhaust fan 39, the air inside the hollow cylinder 37 is discharged, and fresh air is injected into the hollow cylinder 37 along the top opening of the hollow cylinder 37. Under the guiding effect of the spiral guide plate 38, an annular air flow is formed inside the hollow cylinder 37, and it moves downward under the action of the exhaust fan 39. The surface of the cylindrical material specimen is cooled by the annular flowing air flow, and the surface of the cylindrical material specimen can be cooled everywhere, which is beneficial to improving the cooling effect. The setting of the annular air flow replaces the nozzle-type fixed-point blowing cooling, avoiding applying an external force to the material specimen, which is beneficial to improving the material fatigue damage test results.

[0048] Please refer to Figure 10 , an embodiment provided by the present invention: An ultrasonic detection device for material fatigue damage detection, including a spiral tube 40 arranged inside the hollow cylinder 37, with a refrigerant contained in the spiral tube 40. The threaded tube is located in the upper half of the hollow cylinder 37. The two ends of the threaded tube are provided with a refrigerant inlet tube and a refrigerant outlet tube, and control valves are arranged on both the refrigerant inlet tube and the refrigerant outlet tube. The refrigerant inlet tube and the refrigerant outlet tube are connected to the refrigerant replenishment component through pipelines. The refrigerant replenishment component includes a refrigerant replenishment tank and a delivery pump. Temperature sensors 1 41 and temperature sensors 2 42 are installed on the inner wall of the hollow cylinder 37. Temperature sensor 1 41 is located on the right side of temperature sensor 2 42, and the position of temperature sensor 1 41 is higher than the top end of the material specimen, while the position of temperature sensor 2 42 is lower than the top end of the material specimen.

[0049] Further, by arranging the spiral tube 40 inside the hollow cylinder 37 and loading the refrigerant, when the fresh air passes through the upper half of the hollow cylinder 37, the air is cooled, which is convenient for better cooling the surrounding environment of the surface area of the material specimen and is beneficial to improving the cooling effect. By setting temperature sensor 1 41 and temperature sensors 2 42, when the difference between the temperature detection data of temperature sensor 1 41 and the temperature detection data of temperature sensor 2 42 is less than 3°C, the control valve is opened to discharge the refrigerant in the spiral tube 40, and the refrigerant is re-injected through the refrigerant replenishment component, thereby ensuring that the fresh air can be effectively cooled and ensuring that the material specimen can be effectively cooled.

[0050] Please refer to Figure 1 and Figure 2, an embodiment provided by the present invention: An ultrasonic detection device for material fatigue damage detection, including a detection box 1 internally installed with a second servo motor 44. The output end of the second servo motor 44 is connected to a screw rod 45, and the screw rod 45 is located behind the centering transfer component and behind the fixing frame 32. The outer wall of the screw rod 45 is sleeved with a bearing plate 46, and the left and right outer walls of the bearing plate 46 are embedded and connected to the inside of the detection box 1. An ultrasonic generator 47 is installed on the top of the bearing plate 46. The output end of the ultrasonic generator 47 is connected to a transducer 48. A vibration application head 49 is installed at the bottom of the transducer 48, and the vibration application head 49 is located above the clamping table 2. Ultrasonic waves are generated by the ultrasonic generator 47, the ultrasonic wave signal is converted into vibration by the transducer 48, and a load is applied to the material specimen through the vibration application head 49, thereby performing ultrasonic fatigue testing on the material specimen.

[0051] Working principle: An ultrasonic detection device for material fatigue damage testing outputs the parameters of the test cylindrical specimen through a computer connected to the detection box 1, adjusts the positions of the clamping plate 23 and the auxiliary frame 30, and then places the cylindrical material specimen on the inner wall of the auxiliary frame 30. The specimen is fixed from the front and back sides of the material specimen through the clamping plate 23. By extending the fourth electric push rod 20 and shortening the third electric push rod 18, the material specimen is accurately placed in the clamping groove 3. The clamping frame 5 is pushed by the first telescopic rod to initially fix the material specimen by using the memory clamping plate 7. Then, a force is applied to the memory clamping plate 7 through the deformation column 9, so that the inner wall of the memory clamping plate 7 completely fits the outer wall of the cylindrical material specimen. After that, the rotating support plate 34 is rotated by the first servo motor 33, and the hollow cylinder 37 is covered outside the material specimen by extending the eighth electric push rod 35. The second servo motor 44 and the screw rod 45 drive the bearing plate 46 to move downward, so that the vibration application head 49 fits the top of the material specimen. The test parameters are set through the computer to perform ultrasonic fatigue testing. During the testing process, an annular air flow is generated inside the hollow cylinder 37 by the exhaust fan 39 and the spiral guide plate 38 to cool the heated cylindrical material specimen.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. An ultrasonic detection device for material fatigue damage detection, characterized by: It includes a detection box (1). A clamping table (2) and a centering transfer component are installed on the bottom wall of the detection box (1), and the centering transfer component is located on the left side of the clamping table (2). A clamping component for fixing the test piece of the material to be detected is arranged inside the clamping table (2). The clamping component includes a clamping groove (3) opened at the top of the clamping table (2). An electric push rod one (4) is arranged inside the clamping table (2). The output end of the electric push rod one (4) is connected with a clamping frame (5), and the clamping frame (5) is located inside the clamping groove (3). A connecting block (6) is installed inside the clamping frame (5). The end of the connecting block (6) far away from the electric push rod one (4) is connected with a memory clamping plate (7). A buffer pad is installed on the inner wall of the memory clamping plate (7). A telescopic cylinder (8) is embedded and installed inside the clamping frame (5). An electric heating wire (16) is installed inside the clamping frame (5). The telescopic cylinder (8) is located between two adjacent groups of electric heating wires (16). The end of the telescopic cylinder (8) far away from the electric push rod is connected with a deformation column (9), and the outer wall of the deformation column (9) is in contact with the outer wall of the memory clamping plate (7). A servo motor one (12) is installed inside the clamping table (2), and the servo motor one (12) is located below the clamping groove (3). A rotating frame (13) is sleeved on the outer wall of the output end of the servo motor one (12). An electric push rod two (14) is installed on the top of the rotating frame (13). The output end of the electric push rod two (14) is connected with a plug-in frame (15), and the plug-in frame (15) penetrates through the bottom wall of the clamping groove (3). A micro push rod one (10) is installed on the top wall of the deformation column (9). The output end of the micro push rod one (10) is connected with a square rod (11), and the bottom end of the square rod (11) can be embedded and connected to the top of the plug-in frame (15). The centering transfer component includes an electric push rod three (18) embedded and installed on the bottom wall of the detection box (1). A bearing support (19) is installed at the output end of the electric push rod three (18). An electric push rod four (20) is installed on the top of the bearing support (19). A transfer frame (21) is installed at the output end of the electric push rod four (20). The transfer frame (21) is a "U" - shaped frame. The center line of the inner wall of the transfer frame (21) facing the clamping table (2) and the central axis of the clamping groove (3) are on the same horizontal straight line. Electric push rods five (22) are embedded and installed on the front and back of the transfer frame (21). The output ends of the electric push rods five (22) are connected with clamping plates (23), and the clamping plates (23) are respectively embedded in the front and back inner walls of the transfer frame (21). The top of the clamping plate (23) is embedded with a moving frame (24), the top of the clamping plate (23) is installed with an electric push rod six (25), and the output end of the electric push rod six (25) is fixedly connected to the right outer wall of the moving frame (24), the top of the moving frame (24) is installed with a servo motor two (26), the output end of the servo motor two (26) is connected to a rotating shaft (27), the bottom end of the rotating shaft (27) is connected to a rotating cylinder (28), and the rotating cylinder (28) is located below the moving frame (24), the top wall of the rotating cylinder (28) is installed with an electric push rod seven (29), the output end of the electric push rod seven (29) is connected to an auxiliary frame (30), and the bottom of the auxiliary frame (30) is embedded with a distance sensor (31).

2. The ultrasonic detection device for material fatigue damage detection according to claim 1, characterized in that: The memory clamping plate (7) is an arc-shaped plate, and when the memory clamping plate (7) is in its original state, its own outer wall fits with the inner wall of the clamping frame (5), and the number of installation groups of the servo motor one (12) is two groups, and the two groups of servo motors one (12) have opposite directions.

3. The ultrasonic detection device for material fatigue damage detection according to claim 1, characterized in that: A limiting slot (17) is formed through the bottom wall of the clamping slot (3), and the plug-in frame (15) is inserted into the limiting slot (17).

4. The ultrasonic detection device for material fatigue damage detection according to claim 1, characterized in that: The inner wall of the detection box (1) is installed with a fixing frame (32), a servo motor (33) is installed at the bottom of the fixing frame (32), a rotating support plate (34) is sleeved on the outer wall of the output end of the servo motor (33), a vent hole (43) is opened through the top of the rotating support plate (34), an electric push rod (35) is installed at the bottom of the rotating support plate (34), the electric push rod (35) is located on both sides of the vent hole (43), the output end of the electric push rod (35) is connected to a cross frame (36), a hollow cylinder (37) is installed through the top of the cross frame (36), a spiral guide plate (38) is installed inside the hollow cylinder (37), and an exhaust fan (39) is installed on the outer wall of the hollow cylinder (37).

5. The ultrasonic detection device for material fatigue damage detection according to claim 4, characterized in that: A spiral tube (40) is provided inside the hollow tube (37), and a refrigerant is contained in the spiral tube (40). A temperature sensor 1 (41) and a temperature sensor 2 (42) are installed on the inner wall of the hollow tube (37), and the temperature sensor 1 (41) is located on the right side of the temperature sensor 2 (42).

6. The ultrasonic detection device for material fatigue damage detection according to claim 1, characterized in that: A servo motor 2 (44) is installed inside the detection box (1), and the output end of the servo motor 2 (44) is connected to a screw rod (45), and the screw rod (45) is located behind the centering transfer component. The outer wall of the screw rod (45) is provided with a bearing plate (46), and the outer walls of the left and right sides of the bearing plate (46) are embedded and connected to the inside of the detection box (1).

7. The ultrasonic detection device for material fatigue damage detection according to claim 6, characterized in that: An ultrasonic generator (47) is installed on the top of the carrier plate (46), an output end of the ultrasonic generator (47) is connected to a transducer (48), a vibration applying head (49) is installed on the bottom of the transducer (48), and the vibration applying head (49) is located above the clamping platform (2).

8. The ultrasonic detection device for material fatigue damage detection according to claim 1, characterized in that: The detection box (1) is electrically connected to a computer via a wire, and the computer is used to input test parameters and instructions.

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