Ultrasonic detection equipment for screen damage

Abstract

The invention discloses screen damage ultrasonic detection equipment which comprises a base, an expansion part is arranged at the top of the base, a screen embedding plate is arranged on the expansion part, a vibrator is arranged on one side of the bottom of the screen embedding plate, a cover body is arranged at the top of the screen embedding plate, a through hole is formed in the middle of the cover body, and a rotating ring is arranged in the through hole. An auxiliary part is arranged in a central ring opening of the rotating ring, the auxiliary part is mounted on one side of the top of the base, and an ultrasonic probe is arranged on one side of the bottom of the rotating ring; the expansion part comprises a plurality of supporting plates, the supporting plates are fixed to the centers of the four side edges of the top of the base, connecting rods are inserted into the upper portions of the supporting plates, side plates are arranged at the outer ends of the connecting rods, second limiting discs are arranged at the inner ends of the connecting rods, limiting balls are arranged on the sides, away from the connecting rods, of the second limiting discs, and elastic parts are arranged in the middles of the limiting balls. And an inlaying mounting groove is formed in the middle of the screen mesh inlaying plate. The beneficial effects are that damage points of the screen mesh are avoided, and detection accuracy is improved.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and more specifically, to an ultrasonic testing device for screen damage. Background Technology

[0002] The screen is made of metal or non-metal materials such as rubber or polyurethane. Depending on the working conditions, the screen has different aperture sizes to allow materials smaller than the aperture to pass through, while materials larger than the aperture cannot pass through the screen, thus achieving the purpose of material screening.

[0003] In the process of material screening, multiple different screens are usually required, thus necessitating the use of multi-layer screens. However, after prolonged use, some sections of the screens may become damaged. Therefore, it is necessary to regularly inspect the screens for damage. Conventional inspection methods often employ visual inspection or electron microscopy, where technicians directly observe or use an electronic endoscope to inspect the multi-layer screens from all angles. This results in low inspection efficiency and a tendency to miss damaged areas, leading to low accuracy of conventional inspection methods. Furthermore, in existing technologies, ultrasonic testing is susceptible to misjudgment due to material obstruction, resulting in low material screening efficiency and a high rate of missed detections. Summary of the Invention

[0004] The technical objective of this invention is to address the above-mentioned shortcomings by providing an ultrasonic testing device for screen damage, thereby resolving the aforementioned problems.

[0005] The technical solution of this invention is implemented as follows: An ultrasonic testing device for screen damage includes a base, an expansion section at the top of the base, a screen mounting plate on the expansion section, a vibrator on one side of the bottom of the screen mounting plate for loosening materials and preventing jamming, a cover at the top of the screen mounting plate, a through hole in the center of the cover, a rotating ring inside the through hole, an auxiliary part inside the central opening of the rotating ring, the auxiliary part being installed on one side of the top of the base, and an ultrasonic probe on one side of the bottom of the rotating ring. A signal processing module is located inside the base, and the ultrasonic probe is point-connected to the signal processing module. The signal processing module stores a reference acoustic signal of an intact screen and compares it with the ultrasonic probe signal. The detected emitted or transmitted wave signal is compared with the reference signal to determine if the screen is damaged. The expansion section includes several support plates, which are fixed at the center of the four sides of the top of the base. A connecting rod is inserted through the upper part of the support plate, and a side plate is provided at the outer end of the connecting rod. A limiting disc is provided at the inner end of the connecting rod, and a limiting ball is provided on the side of the limiting disc away from the connecting rod. An elastic component is provided in the middle between the limiting balls. The screen mounting plate has an inlay mounting groove in the middle, and the screen is placed in the inlay mounting groove. The screen is made of magnetic material. The inner wall of the inlay mounting groove has an annular guide rail and a ball bearing. The top of the ball bearing contacts the bottom of the screen to reduce the rotational friction of the screen. A guide ring is provided above the screen. A receiving net is provided at the bottom of the screen mounting plate. Several guide grooves are provided on one side of the inlay mounting groove. The outer end of the guide groove is connected to the collection box installed on the outer side of the corresponding side plate.

[0006] The screen mounting plate has at least two layers of mounting slots, each corresponding to an independent guide slot. The collection box contains partitions corresponding to the guide slots, and each partition houses a weight sensor. Anti-splash partitions are installed between each screen layer. The signal processing module is electrically connected to the weight sensors, and combines ultrasonic signals and weight sensor data to comprehensively determine screen damage. The first screen layer corresponds to the outermost guide slot and the first partition of the collection box; the second screen layer corresponds to the middle guide slot and the second partition of the collection box, and so on. When the weight sensor of a certain collection box partition detects abnormal material exceeding a preset threshold, and the ultrasonic probe detects an abnormal signal in that screen layer, the screen layer is comprehensively determined to be damaged. If only a single signal is abnormal, it is determined to be detection interference, and re-detection is required.

[0007] Preferably, a limiting cylinder is provided on the upper part of the side of the support plate away from the side plate, and a limiting disc one is provided on the side of the limiting cylinder away from the support plate. The connecting rod passes through the limiting cylinder and the limiting disc one. A reset spring two is sleeved on the connecting rod between the limiting disc one and the limiting disc two.

[0008] Preferably, the elastic component includes a chassis located inside a base. The top of the chassis is provided with a support column that penetrates the base. The top of the support column is provided with a trapezoidal platform that cooperates with a limiting ball. The top of the trapezoidal platform is provided with a second support rod. The top of the second support rod is provided with a lower magnetic plate. The center of the top of the lower magnetic plate is provided with a second magnetic column. A first return spring is sleeved on the support column between the top of the chassis and the inner top wall of the base.

[0009] Preferably, the upper inner side of the side plate is provided with a U-shaped mounting plate, and the bottom periphery of the screen inlay plate is provided with mounting strips that match the U-shaped mounting plate.

[0010] Preferably, the guide ring has two locking rods on one side, and the top of the screen panel is provided with a set of locking grooves that match the locking rods on the side of the guide groove.

[0011] Preferably, the auxiliary part includes a motor, the output end of which is connected to a guide rod. The bottom of the guide rod is provided with an upper magnetic plate, and the bottom of the upper magnetic plate is provided with a magnetic column. A gear is sleeved on the guide rod, and a hammer is eccentrically provided on one side of the bottom of the gear for targeted vibration of easily damaged areas such as the edge of the screen. The vibration frequency is staggered from that of the vibrator to avoid resonance. After the equipment is started, the vibrator runs for 30 seconds to preheat before starting the motor and the hammer. The inner wall of the central ring of the rotating ring is provided with side teeth that mesh with the gear. The top of the gear is provided with an H-beam wheel, through which the guide rod passes. A manual adjustment component is provided on the side of the H-beam wheel.

[0012] Preferably, the top of the motor is provided with a mounting plate, the side end of the mounting plate away from the motor is provided with a support plate, the bottom of the support plate is provided with a piston rod, the lower part of the piston rod is provided with a matching cylinder, the bottom of the cylinder is fixed to the top of the base, and the manual adjustment component is installed on the upper side of the support plate.

[0013] Preferably, the manual adjustment assembly includes a fixing block fixed to the upper side of the support plate. A rotating plate is movably connected to the middle of the side of the fixing block away from the support plate. An adjusting rod and a U-shaped clamping block are respectively provided at both ends of the rotating plate. A limiting round rod is provided at the corresponding outer end of the groove on the side of the U-shaped clamping block away from the rotating plate. The limiting round rod contacts the I-beam wheel. A spring is sleeved on the guide rod between the top of the I-beam wheel and the bottom of the motor. The adjusting rod is marked with a scale. A limiting pin is provided at the connection between the U-shaped clamping block and the rotating plate to fix the adjusted position. Manual adjustment and motor drive can be switched. When the motor is driven, the limiting round rod is separated from the I-beam wheel. When the manual adjustment is performed, the limiting round rod is pressed against the I-beam wheel.

[0014] Preferably, the transverse cross-sectional dimension of the screen is smaller than that of the rotating ring.

[0015] Compared with the prior art, the advantages and positive effects of the present invention are as follows: An expansion section is installed on the base. Upon activation, this section drives the four surrounding side plates to expand or retract. When retracted, the screen mounting plate is inserted into the U-shaped mounting plate, connecting the collection box to the guide groove. The screen to be tested is embedded in the mounting groove of the screen mounting plate, allowing it to rotate and slide within the groove. A guide ring is engaged with the screen mounting plate, contacting the top surface of the screen. A rotating ring is threadedly embedded in the through hole at the top of the cover, slidingly engaging with the threaded inner wall of the through hole. When the auxiliary section is activated, it drives... As the rotating ring rotates, the ultrasonic probe on one side of the bottom of the ring rotates around the upper perimeter of the screen, receiving sound wave signals to determine the screen's damage condition. Magnetic column one on the auxiliary section abuts against the screen, and magnetic column two on the expansion section abuts against the receiving mesh. A magnetic effect is generated between magnetic column one and magnetic column two, causing the screen to rotate and allowing the material falling into it to be screened. The damage condition of the screen is determined based on the material falling into the receiving box and collection box. This improves detection efficiency, avoids missing screen damage points, and enhances detection accuracy. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a perspective view of the overall appearance according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the connection structure between the auxiliary part and the screen mounting plate according to an embodiment of the present invention; Figure 3 This is an exploded view according to an embodiment of the present invention; Figure 4 This is an exploded view of the connection between the screen insert plate and the screen according to an embodiment of the present invention; Figure 5 This is an exploded view showing the connection between the auxiliary part and the expansion part according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the auxiliary part structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the manual adjustment component structure according to an embodiment of the present invention.

[0018] In the picture: 1. Base; 2. Expansion section; 3. Screen inlay plate; 4. Cover; 5. Rotating ring; 6. Auxiliary section; 7. Ultrasonic probe; 8. Support plate; 9. Connecting rod; 10. Side plate; 11. Limiting plate II; 12. Limiting ball; 13. Screen; 14. Guide ring; 15. Receiving net; 16. Collection box; 17. Limiting cylinder; 18. Limiting plate I; 19. Reset spring II; 20. Chassis; 21. Support column; 22. Trapezoidal column; 23. Support rod II; 24. Lower 25. Magnetic plate; 26. Magnetic column two; 27. Return spring one; 28. U-shaped mounting plate; 29. ​​Locking rod; 30. Guide groove; 31. Locking groove; 32. Motor; 33. Guide rod; 34. Upper magnetic plate; 35. Magnetic column one; 36. Gear; 37. Side tooth; 38. I-beam wheel; 39. Mounting plate; 40. Support plate; 41. Fixing block; 42. Rotating plate; 43. Adjusting rod; 44. U-shaped clamping block; 45. Limiting round rod; 46. Spring; 47. Hammer. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] According to embodiments of the present invention, such as Figure 1-7 As shown in the document: This invention provides an ultrasonic testing device for screen damage, comprising a base 1, an expansion section 2 at the top of the base 1, a screen mounting plate 3 on the expansion section 2, a vibrator on one side of the bottom of the screen mounting plate 3, a cover 4 at the top of the screen mounting plate 3, a through hole in the middle of the cover 4, a rotating ring 5 inside the through hole, an auxiliary part 6 inside the central opening of the rotating ring 5, the auxiliary part 6 being installed on one side of the top of the base 1, an ultrasonic probe 7 on one side of the bottom of the rotating ring 5, a signal processing module inside the base 1, and the ultrasonic probe 7 being electrically connected to the signal processing module; the ultrasonic probe 7 is a reflective type, selected according to the screen material; the signal processing module includes a receiver, an analog-to-digital converter, and a microprocessor, the receiver receiving the reflected signal from the probe, and the analog-to-digital converter... The converter converts the analog signal into a digital signal. The microprocessor compares the digital signal with the pre-stored reference signal and outputs the damage judgment result. When the amplitude change of the detected signal exceeds ±30%, the propagation time delay exceeds 5ms, or the signal is interrupted, the corresponding area is judged to be damaged. The expansion part 2 includes several support plates 8. The support plates 8 are fixed at the center of the four sides of the top of the base 1. The upper part of the support plate 8 is provided with a connecting rod 9. The outer end of the connecting rod 9 is provided with a side plate 10. The inner end of the connecting rod 9 is provided with a limiting plate 11. The side of the limiting plate 11 away from the connecting rod 9 is provided with a limiting ball 12. An elastic component is provided in the middle between the limiting balls 12. The middle part of the screen mounting plate 3 is provided with an mounting groove. The screen 13 is provided in the mounting groove. A guide ring 14 is provided above the screen 13. The bottom of the screen mounting plate 3 is provided with a receiving net 15; a number of guide grooves 29 are provided on one side of the mounting groove. The bottom wall of the guide groove 29 is an inclined surface that slopes towards the collection box 16. The outer end of the guide groove 29 is connected to the collection box 16 installed on the outer side of the side plate 10 on the corresponding side. The transverse cross-sectional dimension of the screen 13 is smaller than the transverse cross-sectional dimension of the rotating ring 5.

[0022] Among them, a limiting cylinder 17 is provided on the upper part of the side of the support plate 8 away from the side plate 10, and a limiting plate 18 is provided on the side of the limiting cylinder 17 away from the support plate 8. The connecting rod 9 passes through the limiting cylinder 17 and the limiting plate 18. A return spring 19 is sleeved on the connecting rod 9 between the limiting plate 18 and the limiting plate 11. The elastic component includes a base 20, which is located in the base 1. A support column 21 is provided on the top of the base 20, which passes through the base 1. The top of the support column 21 is provided with a trapezoidal platform 22 that cooperates with the limiting ball 12. The top of the trapezoidal platform 22 is provided with a support. The top of the second rod 23 is provided with a lower magnetic plate 24, and the center of the top of the lower magnetic plate 24 is provided with a magnetic column 25. The top of the base 20 and the inner top wall of the base 1 are provided with a return spring 26 on the support column 21. The upper inner side of the side plate 10 is provided with a U-shaped mounting plate 27. The bottom periphery of the screen inlay plate 3 is provided with a mounting strip that matches the U-shaped mounting plate 27. Two locking rods 28 are provided on one side of the guide ring 14. The top of the screen inlay plate 3 is provided with a set of locking grooves 30 that match the locking rods 28 on the side of the guide groove 29.

[0023] The auxiliary part 6 includes a motor 31, the output end of which is connected to a guide rod 32. The bottom of the guide rod 32 is provided with an upper magnetic plate 33, and the bottom of the upper magnetic plate 33 is provided with a magnetic column 34. A gear 35 is fitted onto the guide rod 32, and a hammer 46 is eccentrically positioned on one side of the bottom of the gear 35. The inner wall of the central ring of the rotating ring 5 is provided with side teeth 36 that mesh with the gear 35. A bevel wheel 37 is provided on the top of the gear 35, and the guide rod 32 passes through the bevel wheel 37. A manual adjustment component is provided on the side of the bevel wheel 37. A mounting plate 38 is provided on the top of the motor 31, and a support plate 39 is provided on the side of the mounting plate 38 away from the motor 31. The bottom of the support plate 39 is provided with… A piston rod is provided at the lower part of which a matching cylinder is provided. The bottom of the cylinder is fixed to the top of the base 1. A manual adjustment component is installed on the upper side of the support plate 39. The manual adjustment component includes a fixing block 40, which is fixed to the upper side of the support plate 39. A rotating plate 41 is movably connected to the middle of the side of the fixing block 40 away from the support plate 39. An adjusting rod 42 and a U-shaped clamping block 43 are respectively provided at both ends of the rotating plate 41. A limiting round rod 44 is provided at the corresponding outer end of the groove on the side of the U-shaped clamping block 43 away from the rotating plate 41. The limiting round rod 44 is in contact with the I-beam wheel 37. A spring 45 is sleeved on the guide rod 32 between the top of the I-beam wheel 37 and the bottom of the motor 31.

[0024] Detailed usage and function of this embodiment: The mounting strips around the bottom of the screen panel 3 are attached to the U-shaped mounting plate 27 on the upper inner side of the side plate 10. The receiving mesh 15 at the bottom of the screen panel 3 presses against the magnetic column 25. The magnetic column 25 presses against the lower magnetic plate 24 downwards. The lower magnetic plate 24 presses against the trapezoidal column 22 downwards. After the reset spring 219 is reset, it abuts against the limiting plate 21 and moves towards the center in sync, so that the limiting ball 12 is always in contact with the inclined surface of the trapezoidal column 22. The screen mounting plate 3 has a multi-layer mounting groove in the middle, in which multiple different screens are installed. The aperture decreases from top to bottom, with the largest aperture at the top and the smallest aperture at the bottom. Each mounting groove has a separate guide groove 29 connected to its side. The discharge port of the guide groove 29 is connected to the collection box 16 on the side. The number of partitions in the collection box 16 is adapted to the guide groove 29. The collection box 16 is made of transparent material, so the material falling inside can be directly observed. The guide ring 14 is snapped onto the top of the screen mounting plate 3, causing the locking rod 28 to snap into the locking groove 30, fixing the guide ring 14 to the top of the screen mounting plate 3, so that the guide ring 14 contacts the top surface of the screen located at the topmost position. Place materials of different sizes onto the right side of the top screen, located inside the guide ring 14 on the right side. The rotating ring 5 is threaded into the through hole at the top of the cover 4. The cylinder is started, which drives the piston rod to rise and fall. The piston rod drives the support plate 39 downward, inserting the guide rod 32 into the cover 4 from the center of the rotating ring 5. This causes the magnetic column 34 to press against the top screen 13, which is made of stainless steel. After the magnetic column 34 presses against the screen 13, it attracts the screen 13. There are rolling balls on the inner wall of the mounting groove to increase the rotation of the screen 13. When the drive motor 31 starts running, the motor 31 drives the guide rod 32 to rotate, and the guide rod 32 drives the upper magnetic plate 33 to rotate. The magnetic column 34 attracts the uppermost screen 13. When the magnetic column 34 rotates, it will also rotate the uppermost screen 13. After the screen 13 rotates, it will drive the materials of different sizes that are put on it to rotate together. The large materials are dispersed in all directions after being subjected to centrifugal motion and flow to the left guide port under the arc guidance of the guide ring 14. The small materials fall directly into the screen below and are screened into the receiving net 15 below. The large materials enter the collection box 16 from the corresponding guide groove 29. If the large materials in the first layer fall into the screen 13 in the second layer, it indicates that the first screen 13 is damaged. And so on, the damage of the screen 13 can be judged.

[0025] In addition, after the guide rod 32 rotates, the gear 35 sleeved on the upper part will rotate together. The gear 35 drives the rotating ring 5 to rotate together, and the ultrasonic probe 7 on one side of the bottom of the rotating ring 5 will rotate around the screen 13 above. The ultrasonic probe 7 detects the damage of the screen 13 and avoids missing the damage points.

[0026] Simultaneously, by manually driving the adjusting rod 42 to shake up and down, the adjusting rod 42 will drive the U-shaped clamping block 43 to shake up and down. The limiting round rod 44 set at the inner and outer ends of the U-shaped clamping block 43 will drive the I-beam wheel 37 to slide up and down on the guide rod 32. The I-beam wheel 37 drives the gear 35 to move up and down on the guide rod 32 together. The gear 35 slides down, and the hammer 46 eccentrically set on one side of the bottom of the gear 35 strikes the screen 13. After the gear 35 slides up and down reciprocally, the hammer 46 will continuously hammer the screen 13. After the screen 13 is vibrated, the material on it is screened and shaken down. After the hammer 46 rotates with the gear 35, it reciprocates and hammers different parts of the screen 13. The damage of the screen 13 is judged by the ultrasonic detection of the sound wave signals generated in different parts of the screen 13. If the waveform captured by the ultrasonic receiver is abnormal compared with the reference waveform of the intact screen, such as the presence of signal enhancement, time delay, or amplitude reduction, the damaged area can be located, and the screen can be detected to have damage or holes.

[0027] Through the specific embodiments described above, those skilled in the art can easily implement the present invention. However, it should be understood that the present invention is not limited to the specific embodiments described above. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to achieve different technical solutions.

Claims

1. An ultrasonic testing device for screen damage, characterized in that, Includes a base (1), an expansion section (2) on the top of the base (1), a screen mounting plate (3) on the expansion section (2), a vibrator on one side of the bottom of the screen mounting plate (3), a cover (4) on the top of the screen mounting plate (3), a through hole in the middle of the cover (4), a rotating ring (5) inside the through hole, an auxiliary part (6) inside the central ring of the rotating ring (5), the auxiliary part (6) is installed on one side of the top of the base (1), and an ultrasonic probe (7) is provided on one side of the bottom of the rotating ring (5). The base (1) is equipped with a signal processing module, and the ultrasonic probe (7) is electrically connected to the signal processing module; The expansion section (2) includes several support plates (8). The support plates (8) are fixed at the center of the four sides of the top of the base (1). A connecting rod (9) is inserted through the upper part of the support plate (8). A side plate (10) is provided at the outer end of the connecting rod (9). A limiting disc (11) is provided at the inner end of the connecting rod (9). A limiting ball (12) is provided on the side of the limiting disc (11) away from the connecting rod (9). An elastic component is provided in the middle between the limiting balls (12). The screen mounting plate (3) has a mounting groove in the middle, and a screen (13) is installed in the mounting groove. A guide ring (14) is provided above the screen (13). A receiving mesh (15) is provided at the bottom of the screen mounting plate (3). A number of guide grooves (29) are provided on one side of the mounting groove. The outer end of the guide groove (29) is connected to the collection box (16) installed on the outer side of the side plate (10) on the corresponding side.

2. The ultrasonic testing equipment for screen damage according to claim 1, characterized in that, A limiting cylinder (17) is provided on the upper part of the side of the support plate (8) away from the side plate (10). The limiting cylinder (17) is a limiting plate (18) on the side away from the support plate (8). The connecting rod (9) passes through the limiting cylinder (17) and the limiting plate (18). A reset spring 2 (19) is sleeved on the connecting rod (9) between limit plate 1 (18) and limit plate 2 (11).

3. The ultrasonic testing equipment for screen damage according to claim 1, characterized in that, The elastic component includes a chassis (20), which is located inside the base (1). The top of the chassis (20) is provided with a support column (21), which penetrates the base (1). The top of the support column (21) is provided with a trapezoidal platform (22) that cooperates with the limiting ball (12). The top of the trapezoidal platform (22) is provided with a second support rod (23). The top of the second support rod (23) is provided with a lower magnetic plate (24). The center of the top of the lower magnetic plate (24) is provided with a second magnetic column (25). A first reset spring (26) is sleeved on the support column (21) between the top of the chassis (20) and the inner top wall of the base (1).

4. The ultrasonic testing device for screen damage according to claim 1, characterized in that, The upper inner side of the side plate (10) is provided with a U-shaped mounting plate (27), and the bottom periphery of the screen inlay plate (3) is provided with mounting strips that match the U-shaped mounting plate (27).

5. The ultrasonic testing device for screen damage according to claim 1, characterized in that, Two locking rods (28) are provided on one side of the guide ring (14), and a set of locking grooves (30) matching the locking rods (28) are provided on the top of the screen inlay plate (3) on the side of the guide groove (29).

6. The ultrasonic testing device for screen damage according to claim 1, characterized in that, The auxiliary part (6) includes a motor (31), the output end of the motor (31) is connected to a guide rod (32), the bottom of the guide rod (32) is provided with an upper magnetic plate (33), the bottom of the upper magnetic plate (33) is provided with a magnetic column (34), a gear (35) is sleeved on the guide rod (32), a hammer (46) is eccentrically provided on one side of the bottom of the gear (35), and the inner wall of the central ring of the rotating ring (5) is provided with side teeth (36) that mesh with the gear (35). The top of the gear (35) is provided with a bevel wheel (37), the guide rod (32) passes through the bevel wheel (37), and the side of the bevel wheel (37) is provided with a manual adjustment component.

7. The ultrasonic testing equipment for screen damage according to claim 6, characterized in that, The top of the motor (31) is provided with a mounting plate (38), and the side end of the mounting plate (38) away from the motor (31) is provided with a support plate (39). The bottom of the support plate (39) is provided with a piston rod, and the lower part of the piston rod is provided with a matching cylinder. The bottom of the cylinder is fixed to the top of the base (1), and the manual adjustment component is installed on the upper side of the support plate (39).

8. The ultrasonic testing device for screen damage according to claim 7, characterized in that, The manual adjustment assembly includes a fixing block (40), which is fixed to the upper side of the support plate (39). A rotating plate (41) is movably connected to the middle of the side of the fixing block (40) away from the support plate (39). An adjustment rod (42) and a U-shaped clamp (43) are respectively provided at both ends of the rotating plate (41). A limiting round rod (44) is provided at the corresponding outer end of the groove on the side of the U-shaped clamp (43) away from the rotating plate (41). The limiting round rod (44) is in contact with the I-beam wheel (37). A spring (45) is fitted on the guide rod (32) between the top of the I-beam wheel (37) and the bottom of the motor (31).

9. The ultrasonic testing device for screen damage according to claim 1, characterized in that, The transverse cross-sectional dimension of the screen (13) is smaller than that of the rotating ring (5).

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