An ultrasonic flaw detector

Abstract

The application relates to an ultrasonic flaw detector, which comprises a machine body, a probe externally arranged on the machine body and used for ultrasonic flaw detection, and a connecting lead wire plug-in arranged on the machine body and used for connecting the machine body and the probe; a clamping plate is sleeved on the outer circumferential top of the probe and expands the stress surface of the probe; a pressure stabilizing mechanism is used for stably moving the probe on a workpiece to be detected, and the pressure stabilizing mechanism comprises several stable plates, a pressure stabilizing cylinder, an adjusting column and a bearing ring. The application can keep the probe stable in pressure and movement during detection, and effectively avoids detection errors caused by uneven pressure or unstable movement.

Description

Technical Field

[0001] This application relates to the field of nondestructive testing, and in particular to an ultrasonic flaw detector. Background Technology

[0002] Ultrasonic testing, as an important non-destructive testing method, is widely used in various fields such as metal processing, aerospace, and petrochemicals. With increasingly stringent product quality requirements in modern industry, this technology, due to its high efficiency, high precision, and wide applicability, has become one of the core tools for ensuring product safety and reliability. Especially in complex workpiece inspection scenarios, ensuring the operational stability and adaptability of the probe has become a key focus of the industry.

[0003] During flaw detection, maintaining good coupling between the probe and the workpiece is crucial. The pressure applied to the probe directly determines the height and length of the defect's reflected wave. Increased pressure leads to increased height and length of the reflected wave, while decreased pressure results in decreased height and length. This characteristic means that, even when dealing with the same defect, different operators may arrive at drastically different judgments due to varying applied pressure. Therefore, since probe pressure directly affects the height and length of the defect's reflected wave, unstable pressure leads to inaccurate test results, and different pressures applied by different operators can result in inconsistent judgments of the same defect, affecting the repeatability and reliability of the inspection.

[0004] In view of the above-mentioned technologies, it is necessary to propose an ultrasonic flaw detector to solve one of the above-mentioned technical problems. Summary of the Invention

[0005] To solve one of the above-mentioned technical problems, this application provides an ultrasonic flaw detector.

[0006] The ultrasonic flaw detector provided in this application adopts the following technical solution: An ultrasonic flaw detector, comprising: The machine body has a probe that is movably mounted on its exterior for ultrasonic flaw detection, and a connecting wire is plugged into the machine body for connecting the machine body and the probe. A snap-fit ​​plate is fitted onto the top of the outer periphery of the probe to expand the force-bearing surface of the probe; A pressure stabilizing mechanism is used to stabilize the pressure of the probe as it moves on the workpiece to be tested. The pressure stabilizing mechanism includes several stabilizing plates, a pressure stabilizing cylinder, an adjusting column, and a bearing ring. The several stabilizing plates are arranged horizontally in a circle on the snap-fit ​​plate. The pressure stabilizing cylinder is disposed around the outside of the probe on the bottom side of the stabilizing plate. An elastic element is disposed inside the pressure stabilizing cylinder. The top of the adjusting column is disposed inside the pressure stabilizing cylinder and connected to the elastic element. The bearing ring is adjustablely disposed at the bottom of the adjusting column for stabilizing the pressure on the probe.

[0007] By adopting the above technical solutions, the probe can maintain stable pressure and smooth movement during the detection process, effectively avoiding detection errors caused by uneven pressure or unstable movement. At the same time, the design of the snap-fit ​​plate expands the force-bearing surface of the probe, further improving the stability of the probe during operation, thereby improving the overall accuracy and reliability of ultrasonic flaw detection. The pressure stabilizing mechanism, through the synergistic action of the stabilizing plate, the pressure stabilizing cylinder, and the adjusting column, achieves a uniform pressure distribution of the probe on the workpiece to be tested, ensuring the accuracy of the detection results.

[0008] Optionally, the top of the snap-fit ​​plate is provided with several translation grooves, the slidable plate is slidably disposed in the translation grooves, and the slidable plate is provided with a locking member, which locks the position of the slidable plate in the translation groove, so that the connection position of the adjusting column can be adapted to the size of the bearing ring.

[0009] By adopting the above technical solution, the setting of the translation groove allows the stabilizing plate to slide on the top of the snap-fit ​​plate, thereby flexibly adjusting the position of the stabilizing plate; the locking component can fix the specific position of the stabilizing plate in the translation groove, ensuring that the connection position of the adjusting column is compatible with the size of the bearing ring; this design improves the adaptability of the device, enabling the voltage stabilizing mechanism to make precise adjustments according to bearing rings of different sizes, thereby improving the stability and detection accuracy of the probe on the workpiece to be tested.

[0010] Optionally, the top of the bearing ring is provided with a combination groove, the bottom of the adjusting column is inserted into the combination groove, the inner wall of the combination groove is provided with an elastic fastening piece, and the protrusion of the elastic fastening piece abuts against the outer surface of the adjusting column.

[0011] By adopting the above technical solution, the connection between the bearing ring and the adjusting column is more stable and easier to assemble. Specifically, the design of the combined groove allows the adjusting column to be accurately positioned and inserted into the bearing ring, while the setting of the elastic fastening plate can provide a certain radial clamping force after the adjusting column is inserted, effectively preventing the adjusting column from loosening or falling off during operation, thereby ensuring the stability and reliability of the probe when the workpiece under test is moved under pressure. At the same time, this structural design also allows the adjusting column to be installed and disassembled quickly, improving the equipment maintenance efficiency.

[0012] Optionally, the bearing ring includes two symmetrical hollow semi-rings and an arc-shaped piece. The top of the hollow semi-ring is connected to the bottom of the adjusting column. The two ends of the arc-shaped piece are respectively inserted into the hollow parts of the two hollow semi-rings and slide relative to each other to realize the size adjustment of the bearing ring.

[0013] By adopting the above technical solution, the adjustable size of the bearing ring is achieved. Specifically, the two symmetrical hollow semi-rings cooperate with the arc-shaped piece, allowing the bearing ring to adapt to different size requirements, thereby improving the applicability of the equipment; at the same time, the method of adjusting the size by inserting the arc-shaped piece into the hollow semi-ring and sliding it relative to each other is simple in structure and convenient in operation, effectively improving assembly efficiency and stability.

[0014] Optionally, the device also includes a combination frame. A concave surface is provided on one side of the rear end of the device. The combination frame is detachably mounted on the concave surface and is used to store the connecting wires and unused probes. The combination frame is provided with several winding plates. The winding plates are provided with winding openings to store the connecting wires in sections and to adapt to the length of the connecting wires.

[0015] By adopting the above technical solutions, the combination frame effectively solves the problem of storing connecting wires and probes, avoiding loss or damage caused by random placement; at the same time, the winding port design on the winding plate can flexibly adjust the storage method of connecting wires, ensuring that the wire length is reasonably allocated according to different usage scenarios, thereby improving the overall portability of the equipment and the efficiency of on-site operation.

[0016] Optionally, a support seat is slidably provided at the bottom of the combination frame, and a support plate is provided on the rear end face of the support seat. The unused probe is placed on the support seat, and flexible protective cotton layers are provided on both sides of the inner wall of the combination frame to wrap the unused probe.

[0017] By adopting the above technical solutions, unused probes can be effectively protected during storage, avoiding damage caused by collisions or friction; at the same time, the design of the support base makes it easier to pick up and put down the probes, improving operational efficiency; the flexible protective cotton layer further enhances the cushioning effect on the probes, ensuring the safety and integrity of the probes during the process of being carried with the machine.

[0018] Optionally, the rear end face of the machine body is provided with a disassembly and assembly mechanism relative to the assembly frame. The disassembly and assembly mechanism includes a plurality of rotating rods and a limiting plate. The plurality of rotating rods are provided on the rear end face of the machine body and near the concave surface. One end of the limiting plate is rotatably connected to the rotating rod, and one side of the limiting plate abuts against the assembly frame and limits it at the concave surface.

[0019] By adopting the above technical solutions, the modular frame can be quickly installed and disassembled, improving the portability and storage efficiency of the equipment. Specifically, by utilizing the cooperative structure of the rotating rod and the limiting plate, flexible limiting and release operations of the modular frame are achieved, ensuring the stability of the modular frame during use and effectively preventing accidental detachment caused by vibration or external force.

[0020] Optionally, the top of the assembly frame is provided with a through hole, which is used for one end of the connecting wire to pass through and connect to the connection point at the top of the body.

[0021] By adopting the above technical solution, the design of the through hole allows the connecting wire to be easily connected to the connection point on the top of the machine body, ensuring that the connecting wire will not be obstructed or excessively pulled during use, thus improving connection stability. At the same time, this design simplifies the wiring operation of the connecting wire and enhances the user's convenience.

[0022] Optionally, a protective cover of a matching shape is provided on the outside of the body corresponding to the concave surface, which protects the assembly frame at the concave surface when not in use.

[0023] By adopting the above technical solution, the protective cover can effectively protect the combination frame from the influence of the external environment when it is not in use, and prevent dust, moisture or other impurities from entering the interior of the combination frame, thereby improving the overall service life and reliability of the device. Specifically, the fitting design of the protective cover and the concave surface ensures good sealing performance and reduces the risk of damage to the connecting wires and probes stored in the combination frame by external factors.

[0024] Optionally, the two sides of the machine body are rotatably provided with U-shaped support frames, which are used to support the machine body at different placement angles. The outer surface of the support frame is covered with a rubber pad to increase the friction between the support frame and the contact surface.

[0025] By adopting the above technical solutions, the support frame allows the machine to adapt to various placement scenarios, especially in uneven or special working environments. Users can adjust the angle of the machine according to their needs, improving operational flexibility and applicability. At the same time, the addition of rubber pads effectively increases the friction between the support frame and the contact surface, ensuring that the machine is more stable during use and reducing the risk of accidental slippage.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a pressure stabilizing mechanism, a stable pressing force can be provided when the probe performs ultrasonic testing on the workpiece, ensuring uniform contact between the probe and the workpiece surface, thereby improving the accuracy and consistency of the test results; the snap-fit ​​plate expands the force-bearing area of ​​the probe, and combined with the design of the stabilizing plate and pressure stabilizing cylinder, it can effectively disperse the force and reduce the risk of probe displacement due to excessive local pressure, thus improving operational stability; 2. The adjustment of the bearing ring and adjusting column enables good adaptation to different types and sizes of workpieces, while its adjustable structural design improves the versatility and flexibility of the equipment in complex environments. Attached Figure Description

[0027] Figure 1 This is a three-dimensional view of an ultrasonic flaw detector (with a voltage stabilizing mechanism) according to this application.

[0028] Figure 2 This is a three-dimensional view of the voltage stabilizing mechanism of an ultrasonic flaw detector according to this application.

[0029] Figure 3 This is a partial cross-sectional view of the voltage stabilizing mechanism of an ultrasonic flaw detector according to this application.

[0030] Figure 4 This is a three-dimensional view of a second embodiment of an ultrasonic flaw detector according to this application.

[0031] Figure 5 This is a three-dimensional view (with a combination frame) of an ultrasonic flaw detector according to this application.

[0032] Figure 6 yes Figure 5 Side view.

[0033] Figure 7 yes Figure 5 Rear view (without protective cover).

[0034] In the diagram: 1. Body; 11. Probe; 12. Connecting wire; 13. Concave surface; 14. Assembly / disassembly mechanism; 141. Rotating rod; 142. Limiting plate; 15. Protective cover; 16. Support frame; 161. Rubber pad; 2. Clip plate; 21. Translation groove; 3. Pressure stabilizing mechanism; 31. Stable plate; 311. Locking component; 32. Pressure stabilizing cylinder; 33. Adjusting column; 34. Bearing ring; 341. Combination groove; 342. Elastic fastening plate; 343. Hollow semi-ring; 344. Arc-shaped plate; 35. Elastic component; 4. Combination frame; 41. Winding plate; 42. Winding opening; 43. Bearing seat; 44. Supporting plate; 45. Flexible protective cotton layer; 46. Insertion hole. Detailed Implementation

[0035] The following is in conjunction with the accompanying drawings. Figures 1-7 This application will be described in further detail.

[0036] Example 1, Reference Figures 1-3 This application discloses an ultrasonic flaw detector, including: a body 1, a snap-fit ​​plate 2, and a voltage stabilizing mechanism 3.

[0037] A probe 11 is movably mounted on the outside of the body 1 for ultrasonic flaw detection. A connecting wire 12 is pluggable onto the body 1 for connecting the body 1 and the probe 11. A snap-fit ​​plate 2 is fitted onto the top of the outer periphery of the probe 11 to expand the force-bearing surface of the probe 11. A pressure stabilizing mechanism 3 is used to stabilize the pressure of the probe 11 on the workpiece to be tested. The pressure stabilizing mechanism 3 includes several stabilizing plates 31, a pressure stabilizing cylinder 32, an adjusting column 33, and a bearing ring 34. Several stabilizing plates 31 are arranged horizontally in a circle on the snap-fit ​​plate 2. The pressure stabilizing cylinder 32 is arranged around the outside of the probe 11 on one side of the bottom of the stabilizing plate 31. An elastic element 35 is provided inside the pressure stabilizing cylinder 32. The top of the adjusting column 33 is located inside the pressure stabilizing cylinder 32 and is connected to the elastic element 35. The bearing ring 34 is adjustablely arranged at the bottom of the adjusting column 33 for stabilizing the force on the probe 11.

[0038] During the testing process, the probe 11 maintains stable pressure and smooth movement, effectively avoiding testing errors caused by uneven pressure or unstable movement. Simultaneously, the design of the snap-fit ​​plate 2 expands the force-bearing surface of the probe 11, further enhancing its stability during operation, thereby improving the overall accuracy and reliability of ultrasonic testing. The pressure stabilizing mechanism 3, through the coordinated action of the stabilizing plate 31, the pressure stabilizing cylinder 32, and the adjusting column 33, distributes the pressure across the pressure stabilizing cylinders 32 via several stabilizing plates 31 on the snap-fit ​​plate 2 when the operator presses and moves the probe 11 on the workpiece. The pressure is then stabilized and buffered by the elastic element 35 within the pressure stabilizing cylinder 32. Furthermore, the adjusting column 33 is a telescopic adjustable rod, allowing for length adjustment and locking to match the required pressing pressure of the probe 11. Supported by the bearing ring 34, this achieves a uniform pressure distribution of the probe 11 on the workpiece, ensuring the accuracy of the test results.

[0039] refer to Figure 2In this embodiment, more specifically, the top of the snap-fit ​​plate 2 is provided with several translation grooves 21, and the stabilizing plate 31 is slidably disposed in the translation grooves 21. The stabilizing plate 31 is provided with a locking member 311, which locks the position of the stabilizing plate 31 in the translation groove 21. This is used to adjust the connection position of the adjusting column 33 to match the size of the bearing ring 34. The translation grooves 21 allow the stabilizing plate 31 to slide on the top of the snap-fit ​​plate 2, thereby flexibly adjusting the position of the stabilizing plate 31. The locking member 311 can fix the specific position of the stabilizing plate 31 in the translation groove 21, ensuring that the connection position of the adjusting column 33 matches the size of the bearing ring 34. This design improves the adaptability of the device, enabling the voltage stabilizing mechanism 3 to be precisely adjusted according to the bearing ring 34 of different sizes, thereby improving the stability and detection accuracy of the probe 11 on the workpiece to be tested.

[0040] refer to Figure 3 In this embodiment, more specifically, the top of the bearing ring 34 is provided with a combination groove 341, the bottom of the adjusting column 33 is inserted into the combination groove 341, and the inner wall of the combination groove 341 is provided with an elastic fastening piece 342. The protrusion of the elastic fastening piece 342 abuts against the outer surface of the adjusting column 33, making the connection between the bearing ring 34 and the adjusting column 33 more stable and easier to assemble. Specifically, the design of the combination groove 341 allows the adjusting column 33 to be accurately positioned and inserted into the bearing ring 34, while the setting of the elastic fastening piece 342 can provide a certain radial clamping force after the adjusting column 33 is inserted, effectively preventing the adjusting column 33 from loosening or detaching during operation, thereby ensuring that the probe 11 maintains stability and reliability when the workpiece to be measured is moved under pressure. At the same time, this structural design also allows the adjusting column 33 to be quickly installed and disassembled, improving equipment maintenance efficiency.

[0041] refer to Figure 1 In this embodiment, more specifically, U-shaped support frames 16 are rotatably provided on both sides of the body 1. The support frames 16 are used to support the body 1 at different placement angles. The outer surface of the support frames 16 is covered with rubber pads 161 to increase the friction between the support frames 16 and the contact surface. The support frames 16 enable the body 1 to adapt to various placement scenarios, especially in uneven or special working environments. Users can adjust the angle of the body 1 according to their needs, improving operational flexibility and applicability. At the same time, the addition of rubber pads 161 effectively increases the friction between the support frames 16 and the contact surface, ensuring that the body 1 is more stable during use and reducing the risk of accidental slippage.

[0042] The implementation principle of an ultrasonic flaw detector according to an embodiment of this application is as follows: the probe 11 can maintain stable pressure and smooth movement during the detection process; at the same time, the design of the snap-fit ​​plate 2 expands the force-bearing surface of the probe 11, improving the overall accuracy and reliability of ultrasonic flaw detection; the pressure stabilizing mechanism 3, through the coordinated action of the stabilizing plate 31, the pressure stabilizing cylinder 32 and the adjusting column 33, realizes the uniform pressure distribution of the probe 11 on the workpiece to be tested, ensuring the accuracy of the detection results.

[0043] Example 2, reference Figure 4 The difference between this embodiment and Embodiment 1 is that the bearing ring 34 includes two symmetrical hollow semi-rings 343 and an arc-shaped piece 344. The top of the hollow semi-rings 343 is connected to the bottom of the adjusting column 33. The two ends of the arc-shaped piece 344 are respectively inserted into the hollow parts of the two hollow semi-rings 343 and slide relative to each other, thereby realizing the size adjustment of the bearing ring 34 and achieving the adjustable size function of the bearing ring 34. Specifically, the cooperation between the two symmetrical hollow semi-rings 343 and the arc-shaped piece 344 allows the bearing ring 34 to adapt to different size requirements, thereby improving the applicability of the equipment. At the same time, the method of adjusting the size by inserting the arc-shaped piece 344 into the hollow semi-rings 343 and sliding relative to each other is simple in structure and convenient in operation, effectively improving assembly efficiency and stability.

[0044] Example 3, reference Figure 5 and Figure 6 The difference between this embodiment and Embodiment 1 is that it also includes a combination frame 4. A concave surface 13 is provided on one side of the rear end of the body 1. The combination frame 4 is detachably mounted on the concave surface 13 and is used to store the connecting wires 12 and unused probes 11. Several winding plates 41 are provided inside the combination frame 4. The winding plates 41 are provided with winding openings 42 for segmented storage of the connecting wires 12 and are adapted to the length of the connecting wires 12. The combination frame 4 effectively solves the storage problem of the connecting wires 12 and probes 11 and avoids loss or damage caused by random placement. At the same time, the winding openings 42 on the winding plates 41 can flexibly adjust the storage method of the connecting wires 12 to ensure that the wire length is reasonably allocated according to different usage scenarios, thereby improving the overall portability of the equipment and the efficiency of on-site operation.

[0045] refer to Figure 6In this embodiment, more specifically, a support base 43 is slidably provided at the bottom of the combination frame 4, and a support plate 44 is provided on the rear end face of the support base 43. The unused probe 11 is placed on the support base 43. Flexible protective cotton layers 45 are provided on both sides of the inner wall of the combination frame 4. The flexible protective cotton layers 45 wrap the unused probe 11, which can be effectively protected during storage to avoid damage caused by collision or friction. At the same time, the design of the support base 43 makes it more convenient to pick up and put down the probe 11, improving the operational efficiency. The setting of the flexible protective cotton layer 45 further enhances the buffering effect on the probe 11, ensuring the safety and integrity of the probe 11 during the process of being carried with the body 1.

[0046] refer to Figure 7 In this embodiment, more specifically, a disassembly and assembly mechanism 14 is provided on the rear end face of the body 1 relative to the assembly frame 4. The disassembly and assembly mechanism 14 includes several rotating rods 141 and a limiting piece 142. The several rotating rods 141 are provided on the rear end face of the body 1 and near the concave surface 13. One end of the limiting piece 142 is rotatably connected to the rotating rod 141, and one side of the limiting piece 142 abuts against and limits the assembly frame 4 at the concave surface 13. The assembly frame 4 can be quickly installed and disassembled, improving the portability and storage efficiency of the device. Specifically, by utilizing the cooperative structure of the rotating rods 141 and the limiting piece 142, flexible limiting and release operations of the assembly frame 4 are realized, ensuring the stability of the assembly frame 4 during use and effectively avoiding accidental detachment caused by vibration or external force.

[0047] refer to Figure 5 In this embodiment, more specifically, the top of the combination frame 4 is provided with a through hole 46. The through hole 46 is used for one end of the connecting wire 12 to pass through and connect to the top connection of the body 1. The through hole 46 makes it easy for the connecting wire 12 to connect to the top connection of the body 1, ensuring that the connecting wire 12 will not be obstructed or excessively pulled during use, thus improving the connection stability. At the same time, this design simplifies the wiring operation of the connecting wire 12 and improves the user's convenience.

[0048] refer to Figure 5 In this embodiment, more specifically, a protective cover 15 with a matching shape is provided on the outer side of the body 1 at the concave surface 13. When not in use, the protective cover 15 protects the assembly frame 4 at the concave surface 13. The protective cover 15 can effectively protect the assembly frame 4 from the influence of the external environment when not in use, and prevent dust, moisture or other impurities from entering the interior of the assembly frame 4, thereby improving the overall service life and reliability of the device. Specifically, the fitting design of the protective cover 15 and the concave surface 13 ensures good sealing performance and reduces the risk of damage to the connecting wires 12 and probes 11 stored in the assembly frame 4 by external factors.

[0049] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ultrasonic flaw detector, characterized in that, include: The machine body (1) has a probe (11) movably mounted on its exterior for ultrasonic flaw detection. A connecting wire (12) is plugged into the machine body (1) for connecting the machine body (1) and the probe (11). A snap-fit ​​plate (2) is fitted onto the top of the outer periphery of the probe (11) to enlarge the force-bearing surface of the probe (11); A pressure stabilizing mechanism (3) is used to stabilize the pressure of the probe (11) on the workpiece to be tested. The pressure stabilizing mechanism (3) includes several stabilizing plates (31), a pressure stabilizing cylinder (32), an adjusting column (33), and a bearing ring (34). Several stabilizing plates (31) are arranged horizontally in a circle on the snap-fit ​​plate (2). The pressure stabilizing cylinder (32) is arranged around the outside of the probe (11) on the bottom side of the stabilizing plate (31). An elastic element (35) is provided inside the pressure stabilizing cylinder (32). The top of the adjusting column (33) is located inside the pressure stabilizing cylinder (32) and is connected to the elastic element (35). The bearing ring (34) is adjustablely arranged at the bottom of the adjusting column (33) for stabilizing the pressure of the probe (11). The top of the snap-fit ​​plate (2) is provided with several translation grooves (21), the slidable plate (31) is slidably disposed in the translation grooves (21), the slidable plate (31) is provided with a locking member (311), the locking member (311) locks the position of the slidable plate (31) in the translation grooves (21), and the connection position of the adjusting column (33) is adapted to the size of the bearing ring (34); The top of the bearing ring (34) is provided with a combination groove (341), the bottom of the adjusting column (33) is inserted into the combination groove (341), the inner wall of the combination groove (341) is provided with an elastic fastening piece (342), and the protrusion of the elastic fastening piece (342) abuts against the outer surface of the adjusting column (33). The bearing ring (34) includes two symmetrical hollow half-rings (343) and an arc-shaped piece (344). The top of the hollow half-ring (343) is connected to the bottom of the adjusting column (33). The two ends of the arc-shaped piece (344) are respectively inserted into the hollow part of the two hollow half-rings (343) and slide relative to each other to realize the size adjustment of the bearing ring (34).

2. The ultrasonic flaw detector according to claim 1, characterized in that: It also includes a combination frame (4), and the rear end of the body (1) is provided with a concave surface (13). The combination frame (4) is detachably installed on the concave surface (13) for storing the connecting wire (12) and the unused probe (11). The combination frame (4) is provided with several winding plates (41). The winding plates (41) are provided with winding openings (42) for storing the connecting wire (12) in sections and adapting to the length of the connecting wire (12).

3. An ultrasonic flaw detector according to claim 2, characterized in that: A support seat (43) is slidably provided at the bottom of the combination frame (4). A support plate (44) is provided on the rear end face of the support seat (43). The unused probe (11) is placed on the support seat (43). Flexible protective cotton layers (45) are provided on both sides of the inner wall of the combination frame (4). The flexible protective cotton layers (45) wrap the unused probe (11).

4. An ultrasonic flaw detector according to claim 2, characterized in that: The rear end face of the body (1) is provided with a disassembly and assembly mechanism (14) corresponding to the assembly frame (4). The disassembly and assembly mechanism (14) includes a plurality of rotating rods (141) and a limiting piece (142). The plurality of rotating rods (141) are provided on the rear end face of the body (1) and close to the concave surface (13). One end of the limiting piece (142) is rotatably connected to the rotating rod (141), and one side of the limiting piece (142) abuts against the assembly frame (4) and limits it at the concave surface (13).

5. An ultrasonic flaw detector according to claim 2, characterized in that: The top of the combination frame (4) is provided with a through hole (46), which is used for one end of the connecting wire (12) to pass through and connect to the top connection of the body (1).

6. An ultrasonic flaw detector according to claim 4, characterized in that: The outer side of the body (1) is provided with a protective cover (15) that fits the shape of the concave surface (13) and protects the assembly frame (4) at the concave surface (13) when not in use.

7. An ultrasonic flaw detector according to claim 1, characterized in that: The body (1) is provided with U-shaped support frames (16) on both sides. The support frames (16) are used to support the body (1) at different placement angles. The outer surface of the support frames (16) is covered with rubber pads (161) to increase the friction between the support frames (16) and the contact surface.

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