An ultrasonic flaw detector

Abstract

The utility model belongs to ultrasonic flaw detector technical field provides an ultrasonic flaw detector, including support cover, the front fixed mounting of support cover has ultrasonic flaw detector host computer, one side surface fixed mounting of support cover has drive piece, the inner wall of support cover is provided with transmission screw rod, the outer surface fixed connection of transmission screw rod has transmission gear, the outer surface screw thread connection of transmission screw rod has screw thread adjusting plate. The utility model discloses through pushing mobile push hand, and with the help of support cover bottom surface's moving seat, can remove the equipment to the detection starting position, need not handheld probe, in addition the starting of drive motor can be through the meshing transmission of drive shaft, drive gear and transmission gear, will drive transmission screw rod rotation, and then make screw thread adjusting plate along the sliding of bar hole and limit strip hole, then realize the up and down height adjustment of probe main part through connecting plate, is applicable to different specifications workpieces.

Description

Technical Field

[0001] This utility model belongs to the technical field of ultrasonic flaw detectors, and specifically relates to an ultrasonic flaw detector. Background Technology

[0002] An ultrasonic flaw detector is a professional device that uses the physical properties of ultrasonic waves, such as reflection, refraction, and attenuation, to perform non-destructive testing on internal and surface defects of materials such as metals and non-metals. Its core consists of a transmitting circuit, a receiving circuit, a display unit, and a probe. When working, the probe emits high-frequency ultrasonic signals into the workpiece. When the sound waves encounter defects or material interfaces, they generate reflected waves. The instrument receives the reflected signals and converts them into a visual image, which allows operators to determine the location, size, and nature of the defects.

[0003] Currently, ultrasonic flaw detection methods require operators to hold the probe and continuously slide it across the workpiece surface, manually controlling the coupling state and movement trajectory of the probe to complete the inspection. However, this method has shortcomings when facing long-distance inspection scenarios such as large pipelines, long welds, and high-speed rail tracks. On the one hand, operators need to maintain a hand-held posture and move along a fixed path for a long time, which can easily lead to arm fatigue and a significant decrease in inspection efficiency. This is especially true when inspecting workpieces that are several meters long, where operational convenience is reduced. On the other hand, it is difficult to maintain a stable pressure and coupling effect between the probe and the workpiece surface manually. Even slight loosening or deviation can cause changes in the ultrasonic wave propagation path, resulting in distorted reflected signals and misjudgment of defects, thus affecting the accuracy of the inspection results. Therefore, to solve the above problems, we provide an ultrasonic flaw detector. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model proposes an ultrasonic flaw detector.

[0005] The technical solution of this utility model is: This utility model proposes an ultrasonic flaw detector, including a support cover. The main unit of the ultrasonic flaw detector is fixedly installed on the front of the support cover. A driving component is fixedly installed on one side of the support cover. A transmission screw is provided on the inner wall of the support cover. A transmission gear is fixedly connected to the outer surface of the transmission screw. A threaded adjusting plate is threadedly connected to the outer surface of the transmission screw. A connecting plate is fixedly installed on one side of the threaded adjusting plate. An elastic buffer is fixedly installed on one side of the connecting plate. A concave plate is provided below the elastic buffer. A connecting block is hinged to the concave plate through a damping pin on its inner wall. A probe body is fixedly installed on the bottom surface of the connecting block.

[0006] Preferably, the elastic buffer includes a buffer cover fixedly installed on one side of the connecting plate, and two springs are fixedly connected to the inner top wall of the buffer cover, both of which are fixedly connected to the upper surface of the concave plate.

[0007] Preferably, the inner wall of the buffer cover has two limiting holes, and the inner walls of the two limiting holes are slidably connected to limiting blocks. The sides of the two limiting blocks that are close to each other are fixedly connected to the outer surface of the concave plate.

[0008] Preferably, the driving component includes a driving cover fixedly mounted on one side of a support cover, a driving motor fixedly mounted on the inner wall of the driving cover, a driving shaft fixedly mounted on the output end of the driving motor, a driving gear fixedly mounted on one end of the driving shaft, one end of the driving gear meshing with one end of a transmission gear, a bearing plate fixedly mounted on the inner wall of the driving cover, a bearing ring fixedly embedded on one side of the bearing plate, the inner ring of the bearing ring being fixedly connected to the outer surface of the driving shaft, a bearing seat fixedly mounted on the inner wall of the support cover, and the outer surface of the bottom end of the transmission screw being fixedly connected to the inner ring of the bearing seat.

[0009] Preferably, a strip-shaped hole is provided on one side of the support cover, and a limiting strip hole is provided on one side of the support cover. The outer surfaces of both ends of the threaded adjustment plate are slidably connected to the inner wall of the strip-shaped hole and the inner wall of the limiting strip hole, respectively.

[0010] Preferably, a movable pusher is fixedly connected to the front of the support cover, and a movable seat is fixedly installed on the bottom of the support cover.

[0011] This utility model has the following advantages and effects compared with the prior art: (1) By pushing the moving pusher and using the moving seat on the bottom of the support cover, the equipment can be moved to the detection starting position without holding the probe. In addition, the start of the drive motor can be transmitted through the meshing of the drive shaft, drive gear and transmission gear, which will drive the transmission screw to rotate, thereby making the thread adjustment plate slide along the strip hole and limit strip hole. Then, the height adjustment of the probe body can be realized through the connecting plate, which is suitable for workpieces of different specifications. The whole process does not require manual control of the probe movement trajectory, reducing the physical exertion of the staff. Especially for the detection of workpieces with lengths of several meters such as large pipes and long welds, the operation convenience and detection efficiency are improved.

[0012] (2) The two springs inside the buffer cover can apply stable pressure to the concave plate. With the sliding guide of the limiting block on the surface of the concave plate along the limiting hole, the probe body is always tightly attached to the surface of the workpiece. At the same time, the concave plate and the connecting block are hinged by the damping pin, which can adapt to the slight curvature change of the workpiece surface, further ensuring the coupling effect, avoiding the problem of change of ultrasonic propagation path and distortion of reflection signal caused by manual hand-holding, and improving the accuracy of the detection results. Attached Figure Description

[0013] Figure 1This is a three-dimensional structural diagram of the ultrasonic flaw detector of this utility model, viewed from the front. Figure 2 This is a frontal sectional view of the ultrasonic flaw detector of this utility model. Figure 3 This is a top sectional view of the ultrasonic flaw detector of this utility model. Figure 4 This is a bottom-view sectional view of the elastic buffer component in the ultrasonic flaw detector of this utility model. Figure 5 This is a top sectional view of the drive component in the ultrasonic flaw detector of this utility model.

[0014] Reference numerals: 1. Support cover; 2. Ultrasonic flaw detector main unit; 3. Elastic buffer; 31. Buffer cover; 32. Spring; 33. Limiting hole; 34. Limiting block; 4. Driving component; 41. Driving cover; 42. Driving motor; 43. Driving shaft; 44. Bearing plate; 45. Bearing ring; 46. Driving gear; 5. Transmission gear; 6. Transmission screw; 7. Threaded adjusting plate; 8. Strip hole; 9. Connecting plate; 10. Concave plate; 11. Damping pin; 12. Connecting block; 13. Probe body; 14. Bearing seat; 15. Moving pusher; 16. Moving seat; 17. Limiting strip hole. Detailed Implementation

[0015] To enable those skilled in the art to better understand this utility model, it will now be further described in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this utility model.

[0016] Example 1: like Figures 1-5As shown, this utility model provides an ultrasonic flaw detector, which includes a support cover 1. An ultrasonic flaw detector main unit 2 is fixedly installed on the front of the support cover 1. A driving component 4 is fixedly installed on one side of the support cover 1. A transmission screw 6 is provided on the inner wall of the support cover 1. A transmission gear 5 is fixedly connected to the outer surface of the transmission screw 6. A threaded adjusting plate 7 is threadedly connected to the outer surface of the transmission screw 6. A connecting plate 9 is fixedly installed on one side of the threaded adjusting plate 7. An elastic buffer 3 is fixedly installed on one side of the connecting plate 9. A concave plate 10 is provided below the elastic buffer 3. A connecting block 12 is hinged to the concave plate 10 via a damping pin 11 through its inner wall. A probe body 13 is fixedly installed on the bottom surface of the connecting block 12. A strip-shaped hole 8 is opened on one side of the support cover 1. The outer surfaces of the limiting slot 17 and the threaded adjustment plate 7 at both ends are slidably connected to the inner walls of the slot 8 and the limiting slot 17, respectively. A moving pusher 15 is fixedly connected to the front of the support cover 1, and a moving seat 16 is fixedly installed on the bottom surface of the support cover 1. Four universal self-locking wheels are installed at the bottom of the moving seat 16. Specifically, the moving pusher 15, in conjunction with the four universal self-locking wheels at the bottom of the moving seat 16, can flexibly move the equipment and fix its position. The driving component 4 provides power for transmission and can drive the transmission screw 6 on the inner wall of the support cover 1 to rotate. The transmission screw 6 cooperates with the driving component 4 through the transmission gear 5, which can make the threaded adjustment plate 7 on the surface slide along the slot 8 and the limiting slot 17. Then, through the connecting plate 9, the elastic buffer 3 and the probe body 13 are moved to achieve automatic detection without the need for manual holding of the probe.

[0017] In this embodiment, the elastic buffer 3 includes a buffer cover 31 fixedly mounted on one side of the connecting plate 9. Two springs 32 are fixedly connected to the inner top wall of the buffer cover 31. Both springs 32 are fixedly connected to the upper surface of the concave plate 10. Two limiting holes 33 are opened on the inner wall of the buffer cover 31. Limiting blocks 34 are slidably connected to the inner walls of the two limiting holes 33. The side of the two limiting blocks 34 that are close to each other is fixedly connected to the outer surface of the concave plate 10. Specifically, the buffer cover 31 provides protection for the internal components. The two springs 32 can apply stable pressure to the concave plate 10 to ensure that the connecting block 12 connected to the concave plate 10 through the damping pin 11 drives the probe body 13 to fit tightly against the workpiece surface. The limiting holes 33 on the inner wall of the buffer cover 31 cooperate with the limiting blocks 34 on the outer surface of the concave plate 10 to limit the movement direction of the concave plate 10, avoid deviation, ensure stable coupling effect between the probe body 13 and the workpiece, and improve detection accuracy.

[0018] In this embodiment, the driving component 4 includes a driving cover 41 fixedly mounted on one side of the support cover 1. A driving motor 42 is fixedly mounted on the inner wall of the driving cover 41. A driving shaft 43 is fixedly mounted on the output end of the driving motor 42. A driving gear 46 is fixedly mounted on one end of the driving shaft 43. One end of the driving gear 46 meshes with one end of the transmission gear 5. A bearing plate 44 is fixedly mounted on the inner wall of the driving cover 41. A bearing ring 45 is fixedly embedded on one side of the bearing plate 44. The inner ring of the bearing ring 45 is fixedly connected to the outer surface of the driving shaft 43. A bearing ring 45 is fixedly mounted on the inner wall of the support cover 1. The outer surface of the bottom end of the bearing housing 14 and the transmission screw 6 are fixedly connected to the inner ring of the bearing housing 14. Specifically, the drive cover 41 protects the internal drive motor 42. When the drive motor 42 is working, the output end drives the drive shaft 43 to rotate. The drive shaft 43 maintains stable rotation through the bearing ring 45 on the bearing plate 44 to prevent shaking. The drive gear 46 at one end of the drive shaft 43 meshes with the transmission gear 5 to transmit power to the transmission screw 6. The transmission screw 6 maintains stable rotation with the help of the bearing housing 14, and finally drives the threaded adjustment plate 7 to move, which can provide power for the height adjustment of the probe body 13.

[0019] Working principle: When the ultrasonic flaw detector is used, when the staff needs to inspect long-distance workpieces such as large pipes and long welds, first push the moving pusher 15 and move the equipment to the detection starting position through the moving seat 16. Then start the drive motor 42. The output end of the drive motor 42 drives the drive shaft 43 to rotate. Then the drive gear 46 at one end of the drive shaft 43 meshes with the transmission gear 5 on the transmission screw 6 on the inner wall of the support cover 1, which can drive the transmission screw 6 to rotate in the bearing seat 14. When the transmission screw 6 rotates, the threaded adjustment plate 7 connected to its surface slides along the strip hole 8 and the limiting strip hole 17 on the side of the support cover 1. Then the connection plate 9 on one side of the threaded adjustment plate 7 drives the up and down height adjustment, which can make the probe body 13 fit tightly against the surface of the workpiece. In addition, when the device moves the probe body 13 for long-distance sliding detection, a coupling agent is first applied to the surface of the workpiece. Then, by moving the probe body 13, high-frequency ultrasonic waves can be emitted. After the sound waves are reflected by the defects in the workpiece, the probe body 13 receives the signal and transmits it to the ultrasonic flaw detector host 2, which is converted into a visual image for the staff to judge. In addition, the two springs 32 on the inner top wall of the buffer cover 31 apply stable pressure to the concave plate 10 below, ensuring that the probe body 13 on the bottom surface of the connecting block 12, which is hinged to the concave plate 10 through the damping pin 11, is in close contact with the workpiece surface. The pressure of the probe body 13 can be kept constant by means of the elastic buffer 3, avoiding signal distortion caused by manual loosening and improving the detection accuracy.

[0020] It should also be noted that, in terms of circuit structure, the drive and control circuits of this utility model are common and mature technologies. Those skilled in the art can select appropriate circuit components to build the circuit according to the power requirements and control requirements of the equipment. For the power supply components, common general power supply equipment on the market and electrical components of this application can be used. These are all common electrical equipment in the prior art. The control circuit can be implemented by those skilled in the art through simple programming. This application will not elaborate further.

[0021] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. All equivalent changes and modifications made within the scope of this utility model should still fall within the scope of this utility model.

Claims

1. An ultrasonic flaw detector, comprising a support cover (1), wherein an ultrasonic flaw detector main unit (2) is fixedly mounted on the front side of the support cover (1), characterized in that: A drive component (4) is fixedly installed on one side of the support cover (1). A transmission screw (6) is provided on the inner wall of the support cover (1). A transmission gear (5) is fixedly connected to the outer surface of the transmission screw (6). A threaded adjustment plate (7) is threadedly connected to the outer surface of the transmission screw (6). A connecting plate (9) is fixedly installed on one side of the threaded adjustment plate (7). An elastic buffer (3) is fixedly installed on one side of the connecting plate (9). A concave plate (10) is provided below the elastic buffer (3). A connecting block (12) is hinged to the concave plate (10) through the inner wall via a damping pin (11). A probe body (13) is fixedly installed on the bottom surface of the connecting block (12).

2. The ultrasonic flaw detector according to claim 1, characterized in that: The elastic buffer (3) includes a buffer cover (31) fixedly installed on one side of the connecting plate (9). Two springs (32) are fixedly connected to the inner top wall of the buffer cover (31), and both springs (32) are fixedly connected to the upper surface of the concave plate (10).

3. An ultrasonic flaw detector according to claim 2, characterized in that: The inner wall of the buffer cover (31) has two limiting holes (33), and the inner walls of the two limiting holes (33) are slidably connected to limiting blocks (34). The sides of the two limiting blocks (34) that are close to each other are fixedly connected to the outer surface of the concave plate (10).

4. An ultrasonic flaw detector according to claim 1, characterized in that: The driving component (4) includes a driving cover (41) fixedly installed on one side of the support cover (1). A driving motor (42) is fixedly installed on the inner wall of the driving cover (41). A driving shaft (43) is fixedly installed at the output end of the driving motor (42). A driving gear (46) is fixedly installed at one end of the driving shaft (43). One end of the driving gear (46) meshes with one end of the transmission gear (5).

5. An ultrasonic flaw detector according to claim 4, characterized in that: The inner wall of the drive cover (41) is fixedly installed with a bearing plate (44), and a bearing ring (45) is fixedly embedded on one side of the bearing plate (44). The inner ring of the bearing ring (45) is fixedly connected to the outer surface of the drive shaft (43). The inner wall of the support cover (1) is fixedly installed with a bearing seat (14), and the outer surface of the bottom end of the transmission screw (6) is fixedly connected to the inner ring of the bearing seat (14).

6. An ultrasonic flaw detector according to claim 1, characterized in that: The support cover (1) has a strip hole (8) on one side and a limiting strip hole (17) on the other side. The outer surfaces of both ends of the threaded adjustment plate (7) are slidably connected to the inner wall of the strip hole (8) and the inner wall of the limiting strip hole (17), respectively.

7. An ultrasonic flaw detector according to claim 1, characterized in that: A movable pusher (15) is fixedly connected to the front of the support cover (1), and a movable seat (16) is fixedly installed on the bottom surface of the support cover (1).

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