Ultrasonic flaw detector for engineering quality

Abstract

This invention relates to the field of intelligent inspection equipment technology, and discloses an ultrasonic flaw detector for engineering quality, comprising: a detection end, including a detector, a coating mechanism, an ultrasonic probe, and a connector disposed outside the detector, the coating mechanism, and the ultrasonic probe arranged sequentially along the forward direction; the detector is used to detect the roughness of a certain point on the surface of the object to be inspected before the ultrasonic probe. This ultrasonic flaw detector for engineering quality achieves intelligent operation by arranging the detector, coating mechanism, and ultrasonic probe sequentially along the forward direction, and automatically activating the coating mechanism to discharge coupling agent when the detector detects that the surface roughness of the object is higher than a preset value, for use by the subsequent ultrasonic probe. This enables the coupling agent coating process to be automatically linked with the surface roughness detection, thereby solving the problems of insufficient or excessive coupling agent usage and distorted detection signals caused by relying entirely on the operator's subjective experience to judge whether coating is necessary.

Description

Technical Field

[0001] This invention relates to the field of intelligent testing equipment technology, specifically to an ultrasonic flaw detector for engineering quality. Background Technology

[0002] Ultrasonic flaw detectors used in engineering quality testing are non-destructive testing devices that utilize the characteristics of high-frequency sound waves to produce reflections, attenuations, or waveform changes when they encounter defects (such as cracks, pores, and inclusions) within materials. They emit ultrasonic waves through a probe and receive the echo signals, which are then processed and displayed on a screen as waveforms or images. This allows for precise location and quantification of internal defects and assessment of structural integrity. They are commonly used for quality inspection of concrete or metal components such as buildings, bridges, pipelines, and welds.

[0003] When ultrasonic flaw detectors encounter rough surfaces, a coupling agent needs to be applied to fill the gaps between the ultrasonic probe and the surface being inspected. However, this process relies entirely on the operator's subjective experience to judge whether and how much to apply the coupling agent. Therefore, insufficient coupling agent is frequently used during operation, resulting in air pockets left behind as the agent fails to fully fill the surface's unevenness. This weakens the ultrasonic waves and makes it impossible to accurately determine the location and size of defects. Conversely, excessive coupling agent can form an overly thick layer. Ultrasonic waves undergo multiple reflections and refractions at different media interfaces, introducing a large amount of noise and interference signals. This increases the detection noise floor, masks defect echoes near the workpiece's surface, and alters the sound wave propagation path and duration, causing detection deviations and reducing the reliability of the detection data. In practical applications, all three scenarios can occur, so any one of these defects has a higher probability of occurrence. Summary of the Invention

[0004] (a) Technical problems to be solved:

[0005] To address the shortcomings of existing technologies, this invention provides an ultrasonic flaw detector for engineering quality, which solves the problem mentioned in the background that existing ultrasonic flaw detectors rely on manual judgment of coupling agent application, which is prone to signal distortion and inaccurate results due to improper coating amount.

[0006] (II) Technical Solution:

[0007] To achieve the above objectives, the present invention provides the following technical solution: an ultrasonic flaw detector for engineering quality, comprising:

[0008] The detection end includes a detector, an application mechanism, an ultrasonic probe, and a connector disposed on the outside of the detector, the application mechanism, and the ultrasonic probe, arranged sequentially along the forward direction.

[0009] The detector is used to detect the roughness of a certain point on the surface of the object to be tested before the ultrasonic probe;

[0010] The coating component is used to discharge coupling agent onto the surface of the object when the surface roughness of the object is higher than a preset value, for use by the ultrasonic probe.

[0011] The detection end also includes:

[0012] A scraping mechanism, disposed on the connector and located on the side of the ultrasonic probe away from the coating assembly, is used to scrape off the coupling agent used by the ultrasonic probe and to increase the weight behind the detection end.

[0013] Preferably, the application mechanism includes a driving component and a discharging component;

[0014] The driving component includes:

[0015] The enclosure has an anti-slip coating on the side walls.

[0016] The base has two ends, one end of which is fixedly connected to the enclosed shell and the other end of which is fixedly connected to the connector, for fixing the enclosed shell to the connector;

[0017] A telescopic rod is located inside the enclosed shell and has an output end and a fixed end. The fixed end is fixedly connected to the top surface of the inner side of the enclosed shell, and the output end is vertically downward.

[0018] The pressure plate is fixedly connected to the output end of the telescopic rod and moves vertically under the drive of the output end.

[0019] The discharge assembly includes:

[0020] The storage component is located directly below the enclosed shell and its top is aligned with the top of the enclosed shell. It contains a coupling agent and has a baseline on its inner wall.

[0021] Several connecting blocks are respectively fixed to the outer sidewall of the storage component, and their tops are all in the same horizontal plane, for fitting with the bottom of the connecting component and then being fixed with bolts;

[0022] The discharge channel is fixedly connected to the bottom of the storage component and is configured such that the opening gradually increases from top to bottom;

[0023] Two limiting blocks are respectively installed on both sides of the discharge channel;

[0024] A sealing ring, adhered to the top of the storage component, is located between the sealing shell and the storage component, and is used to seal the gap between the sealing shell and the storage component;

[0025] A baffle plate, sleeved on the outer side of the discharge channel away from the storage component, and limited by two limiting blocks, is used to guide the coupling agent discharged by the application mechanism.

[0026] Preferably, the storage component, the plurality of connecting blocks, the discharge channel, and the two limiting blocks are integrally formed.

[0027] Preferably, the connector includes:

[0028] A clamp is attached to the outside of the ultrasonic probe to fix the connector to the ultrasonic probe.

[0029] A connecting hole is provided on one side of the clamp, sleeved on the outside of the storage component, and located on the top of several connecting blocks, and the several connecting blocks are fixedly connected by bolts;

[0030] A connecting platform is located on the side of the connecting hole away from the clamp, and its bottom is fixedly connected to the detector;

[0031] An extension platform is installed on the side wall of the connecting platform.

[0032] Preferably, the connector is integrally formed.

[0033] Preferably, the detection end further includes:

[0034] The protective shell is fixedly connected to the top of the connection platform;

[0035] The processor is fixedly connected inside the protective casing;

[0036] The controller has several control buttons.

[0037] Preferably, the processor is electrically connected to the telescopic rod, the detector, and the controller, respectively, and is used to regulate the working state of the telescopic rod based on the data detected by the detector and the manual control of the controller.

[0038] Preferably, the scraping mechanism includes:

[0039] An extension member, a rod-shaped structure, has one end fixedly connected to the side wall of the clamp away from the coating mechanism;

[0040] A scraping component is provided at the bottom of the extension, and the end near the ultrasonic probe is set as a pointed tip for scraping off the coupling agent;

[0041] The first shaft is fixedly connected to the center of the top of the scraper and rotatably connected to the end of the extension away from the clamp.

[0042] Two second shafts are symmetrically fixedly connected to the top of the scraper;

[0043] The two elastic members are rotatably connected at one end to the clamp and at the other end to the corresponding second shaft, providing the scraping member with a force that rotates along the first shaft at all times.

[0044] Preferably, the shortest distance between the scraper and the clamp is greater than the shortest distance between the two second shafts and the clamp.

[0045] Preferably, it further includes:

[0046] main body;

[0047] A connecting wire, one end of which is connected to the main body and the other end of which is connected to the ultrasonic probe, is used to adjust the working state of the ultrasonic probe and record the detection results of the ultrasonic probe.

[0048] (III) Beneficial Effects:

[0049] The ultrasonic flaw detector for engineering quality provided by this invention has the following beneficial effects:

[0050] 1. This ultrasonic flaw detector for engineering quality is designed by arranging a detector, a coating component, and an ultrasonic probe sequentially along the forward direction. When the detector detects that the surface roughness of an object is higher than a preset value, the coating component is automatically activated to discharge coupling agent for use by the subsequent ultrasonic probe. This achieves intelligent operation, enabling the coupling agent coating process and surface roughness detection to work together automatically. This solves the problems of insufficient or excessive coupling agent and distorted detection signals caused by relying entirely on the operator's subjective experience to judge whether coating is necessary.

[0051] 2. This ultrasonic flaw detector for engineering quality uses a coating assembly that includes a telescopic rod, a pressure plate, a storage component, and a discharge channel. The processor automatically controls the movement distance of the telescopic rod output end based on the roughness value measured by the detector, thereby achieving precise control of the amount of couplant discharged. This avoids problems such as air layer residue and ultrasonic attenuation due to insufficient couplant dosage, and noise interference, increased detection noise, and masking of near-surface defect echoes due to excessive dosage.

[0052] 3. This ultrasonic flaw detector for engineering quality uses a scraping mechanism on the side of the ultrasonic probe away from the coating component. The extended part, scraping part, and elastic part scrape off the used coupling agent. The scraping mechanism also increases the weight behind the detection end, making the detection end heavier during movement and naturally increasing the positive pressure of the scraping part on the surface. This enhances the practicality and ease of use of the detection end while automatically scraping off the coupling agent residue. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0054] Figure 2 This is a schematic diagram of the overall structure of the detection end of the present invention;

[0055] Figure 3 This is a schematic diagram of the bottom structure of the detection end of the present invention;

[0056] Figure 4 This is a schematic diagram of the cross-sectional structure of the detection end of the present invention;

[0057] Figure 5 This is a schematic diagram of the connection structure between the connector and the scraping mechanism of the present invention;

[0058] Figure 6 This is a schematic diagram of the drive component structure of the present invention;

[0059] Figure 7 This is a schematic diagram of the discharge component structure of the present invention;

[0060] Figure 8 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0061] Figure 9 This is a schematic diagram of the overall structure of the detector of the present invention;

[0062] Figure 10 For the present invention Figure 2 Enlarged structural diagram at point B;

[0063] Figure 11 This is a schematic diagram of the connection structure between the protective shell and the processor of the present invention;

[0064] Figure 12 For the present invention Figure 2 Enlarged structural diagram at point C.

[0065] In the diagram: 10. Main body; 11. Connecting line; 20. Ultrasonic probe; 30. Clamp; 31. Connecting hole; 32. Connecting platform; 33. Extension platform; 40. Enclosed shell; 401. Base; 41. Telescopic rod; 42. Pressure plate; 43. Storage component; 431. Connecting block; 432. Discharge channel; 433. Limiting block; 44. Sealing ring; 45. Baffle plate; 50. Detector; 51. Protective shell; 52. Processor; 53. Controller; 60. Extension component; 61. Scraper component; 611. First shaft; 612. Second shaft; 62. Elastic component. Detailed Implementation

[0066] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Example 1

[0068] refer to Figures 1 to 11 An ultrasonic flaw detector for engineering quality according to a preferred embodiment of the present invention will be described in detail below:

[0069] The detection end includes a detector 50, an application mechanism (including a drive assembly and an discharge assembly), an ultrasonic probe 20, and a connector disposed on the outside of the detector 50, the application assembly, and the ultrasonic probe 20, arranged sequentially along the forward direction. The workflow of the detection end is configured as follows: the detector 50 detects the surface roughness of the object; based on the roughness, it selects whether to apply coupling agent and how much to apply; and then performs ultrasonic flaw detection. This makes the use of coupling agent a standardized and reliable detection procedure.

[0070] The detector 50 is used to detect the roughness of a certain point on the surface of the object to be tested before the ultrasonic probe 20. If the roughness is lower than (or equal to) a preset value, no coupling agent needs to be applied, thereby reducing the number of steps and saving coupling agent; if the roughness is higher than (or equal to) a preset value (the moving distance of the pressure plate 42 is controlled according to the magnitude of the higher value), coupling agent needs to be used to ensure that the ultrasonic probe 20 has been coated with an appropriate amount of coupling agent when it passes through this point, thus ensuring the accuracy of the ultrasonic probe 20 detection.

[0071] The coating component is used to discharge coupling agent onto the surface of the object when the surface roughness of the object is higher than a preset value (i.e. when the surface roughness affects the ultrasonic conduction of the ultrasonic probe 20), for use by the ultrasonic probe 20;

[0072] The detection end also includes:

[0073] A scraping mechanism, disposed on the connector and located on the side of the ultrasonic probe 20 away from the coating assembly, is used to scrape off the coupling agent used by the ultrasonic probe 20 and increase the weight behind the detection end. This avoids residual coupling agent contaminating the workpiece surface while adjusting the mass distribution of the entire detection end.

[0074] The application mechanism includes a driving component and a dispensing component;

[0075] The driving component includes:

[0076] The closed shell 40 has an anti-slip coating on its side wall to increase the friction when the user pinches the closed shell 40 to move the detection end, making it easier to control the movement of the detection end on the surface of the object being detected.

[0077] The base 401 has two ends, one end of which is fixedly connected to the closed shell 40 and the other end is fixedly connected to the connector. It is used to fix the closed shell 40 to the connector. The base 401 can be integrally formed with the closed shell 40 and fixedly connected to the connector by bolts to ensure that the entire drive assembly is detachable.

[0078] The telescopic rod 41 is located inside the closed shell 40 and has an output end and a fixed end. The fixed end is fixedly connected to the top surface inside the closed shell 40, and the output end is vertically downward. This ensures that when the telescopic rod 41 is output, the pressure plate 42 moves downward to squeeze the coupling agent in the storage component 43 and squeezes the coupling agent from the discharge channel 432 to the surface of the object being tested.

[0079] The pressure plate 42 is fixedly connected to the output end of the telescopic rod 41 to ensure synchronous movement with the output end of the telescopic rod 41. Under the drive of the output end, it moves in the vertical direction to squeeze the coupling agent in the storage component 43.

[0080] The discharge assembly includes:

[0081] Storage item 43, such as Figure 4 As shown, it is positioned directly below the closed shell 40 and its top is aligned with the top of the closed shell 40 to facilitate the sealing between the aligned closed shell 40 and the storage component 43 (and the sealing ring 44). It contains coupling agent and has a reference line on its inner wall, which serves as the reference for the amount of coupling agent added. That is, each time the coupling agent is added, it is added until it is flush with the reference line.

[0082] Several connecting blocks 431 are respectively fixed to the outer sidewall of the storage component 43, and their tops are all in the same horizontal plane. They are used to fit against the bottom of the connecting component and then be fixed with bolts so that the storage component 43 is fixedly connected to the connecting component. The bolt connection method facilitates the disassembly of the storage component 43, which in turn facilitates the replenishment of coupling agent to the storage component 43 and the reinstallation of the replenished discharge component onto the connecting component for the application of coupling agent again.

[0083] like Figure 7As shown, the discharge channel 432 is fixedly connected to the bottom of the storage component 43 and is configured with an opening that gradually increases from top to bottom to prevent the coupling agent from remaining, adhering, or clogging within the discharge channel 432, ensuring continuous and smooth dispensing of the adhesive, and also allowing the finally discharged coupling agent to be dispersed on the surface of the object being tested. The length of the bottom opening of the discharge channel 432 (the longest side) can be set to be equal to or greater than the diameter of the bottom of the ultrasonic probe 20, to ensure that the bottom of the ultrasonic probe 20 is completely within the range of the coupling agent applied to the surface of the object being tested.

[0084] Two limiting blocks 433 are respectively disposed on both sides of the discharge channel 432 to limit the position of the baffle 45, ensuring that the baffle 45 is in a preset position when it is sleeved on the outside of the discharge channel 432, ensuring stable sleeved connection and fixed sleeved position, and ensuring the guiding function of the baffle 45.

[0085] The sealing ring 44 is bonded to the top of the storage component 43 and is located between the sealing shell 40 and the storage component 43. It is used to seal the gap between the sealing shell 40 and the storage component 43, prevent external dust and moisture from entering the interior of the storage component 43 and contaminating the coupling agent, and also prevent the coupling agent from overflowing from the gap, thereby improving the sealing performance of the application assembly.

[0086] A baffle plate 45, sleeved on the outer side of the discharge channel 432 away from the storage member 43 and limited by two limiting blocks 433, is used to guide the coupling agent discharged by the application mechanism. Specifically, it can guide the coupling agent discharged from the discharge channel 432 to the detection area directly below the ultrasonic probe 20, avoiding the coupling agent from being lost (applied to an inclined surface), dripping (applied to a downward-facing surface) and wasting it, as well as preventing it from being effectively positioned in the forward path of the ultrasonic probe 20.

[0087] The storage component 43, the connecting blocks 431, the discharge channel 432, and the two limiting blocks 433 are integrally formed to ensure the structural strength of the entire discharge assembly and to reduce assembly processes and leakage risks.

[0088] like Figure 5 As shown, the connector includes:

[0089] The clamp 30 is attached to the outside of the ultrasonic probe 20 to securely connect the connector to the ultrasonic probe 20. The clamp 30 has a simple structure and is easy to assemble and disassemble. It ensures stability when connected to the ultrasonic probe 20, and allows the entire detection end to rotate outside the ultrasonic probe 20 by loosening the clamp 30, adapting to the orientation of the entire detection mechanism when the ultrasonic probe 20 moves in different directions, thus increasing adaptability.

[0090] The connecting hole 31 is located on one side of the clamp 30, with an inner diameter slightly larger than the outer diameter of the storage component 43, so that the storage component 43 can be inserted and fitted onto the outside of the storage component 43. It is located on the top of several connecting blocks 431 and has corresponding threaded holes. Several connecting blocks 431 are fixedly connected by bolts.

[0091] The connecting platform 32 is located on the side of the connecting hole 31 away from the clamp 30, with its bottom fixedly connected to the detector 50 and its top fixedly connected to the protective shell 51.

[0092] The extension platform 33 is located on the side wall of the connecting platform 32 for the controller 53 to be fixedly connected (by thread or adhesive), ensuring that several control buttons of the controller 53 are exposed to the outside for use by personnel.

[0093] The connector is integrally molded to ensure the structural strength of the entire connector, thereby ensuring the relative positional stability of all structures on the detection end. This ensures that all structures (including the detector 50, the coating mechanism, and the ultrasonic probe 20) can perform their intended functions during movement and pressing. Furthermore, the connector must be made of a rigid material; specific options include:

[0094] Aluminum alloys are lightweight and easy to process, and can undergo surface anodizing treatment to improve surface hardness and corrosion resistance.

[0095] Stainless steel is hard, wear-resistant, and corrosion-resistant, and can be used stably in harsh environments for a long time. However, it is heavy, which will further increase the overall weight of the detection end.

[0096] The detection end also includes:

[0097] The protective shell 51 is fixedly connected to the top of the connection platform 32 and is used to protect the processor 52 inside.

[0098] The processor 52 is fixedly connected inside the protective shell 51. It is responsible for receiving the roughness value detected by the detector 50 and the control signal of the controller 53, and performing logical operations and outputting control commands to the telescopic rod 41 to regulate the working state of the coating mechanism.

[0099] Controller 53 is equipped with several control buttons, which may include:

[0100] A switch button is used to control the switching of the telescopic rod 41, the detector 50, and the processor 52;

[0101] The reset button is used to control the working state of the telescopic rod 41, so that the output end of the telescopic rod 41 is retracted to the shortest state.

[0102] The manual coupling agent button is used in manual mode or when pre-coating coupling agent is required. Pressing this button temporarily drives the telescopic rod 41 to press down the pressure plate 42 in fixed steps. Each press discharges a certain amount of coupling agent, which the operator can use to apply more coupling agent as needed, thus compensating for the limitations of automatic judgment.

[0103] The processor 52 is electrically connected to the telescopic rod 41, the detector 50, and the controller 53, respectively. It is used to adjust the working state of the telescopic rod 41 according to the data detected by the detector 50 and the manual control of the controller 53, so as to realize a complete closed-loop control system. This allows the control end to automatically detect the surface roughness of the object and select whether to apply coupling agent and how much coupling agent to apply. This avoids the situation where it is difficult to judge whether to apply coupling agent and how much to apply during manual operation, making it a standardized operating procedure.

[0104] Main body 10;

[0105] The connecting line 11 is connected at one end to the main body 10 and at the other end to the ultrasonic probe 20. It is used to control the working state of the ultrasonic probe 20 and record the detection results of the ultrasonic probe 20, so as to ensure that the main body 10 can obtain the detection data of the ultrasonic probe 20 in real time and facilitate the control of the working state of the ultrasonic probe 20.

[0106] in:

[0107] The telescopic rod 41, detector 50, processor 52 and controller 53 can all be directly made using existing technologies, and their interconnection methods and threshold settings are all existing technologies. Anyone skilled in the art can make them using existing conventional technologies.

[0108] The following is the complete working process and working principle of the above embodiments:

[0109] As the detection end moves along the surface of the object to be detected, the detector 50 at the foremost position measures the surface roughness at that location and transmits the data to the processor 52 in real time. The processor 52 compares the measured value with a preset threshold: if the roughness is lower than or equal to the preset value, the application mechanism is not activated, and the ultrasonic probe 20 directly performs the detection; if the roughness is higher than the preset value, the processor 52 controls the output end of the telescopic rod 41 in the drive assembly to move downwards a preset distance according to the degree of roughness exceeding the threshold, causing the pressure plate 42 to squeeze the coupling agent in the storage container 43. The coupling agent is evenly discharged from the discharge channel 432 through the bottom opening and accurately covers the detection area directly below the ultrasonic probe 20 under the guidance of the shielding plate 45. Subsequently, the ultrasonic probe 20 performs flaw detection on the surface with the applied coupling agent, and the detection results are transmitted back to the main body 10 through the connecting line 11. Throughout the process, the processor 52 can also receive human control signals from the controller 53 to form an automatic closed-loop control, thereby replacing the manual subjective judgment of whether the coupling agent is used and the amount used, thus avoiding the problem of detection signal distortion and inaccurate results caused by too little or too much coupling agent.

[0110] Example 2

[0111] refer to Figures 1 to 5 and Figure 12 The scraping mechanism includes:

[0112] The extension 60, a rod-shaped structure, is fixedly connected at one end to the side wall of the clamp 30 away from the coating mechanism, i.e., located behind the ultrasonic probe 20 (relative to the forward direction of the ultrasonic probe 20). This facilitates the scraping off of residual coupling agent after the ultrasonic probe 20 has been used, preventing coupling agent residue from corroding the object or affecting its use. The extension 60 and the two elastic members 62 can also be configured to be detachably connected to the clamp 30 (clamp-on or bolt-on connection), allowing the entire scraping mechanism to be removed when necessary to avoid scratching surfaces with low hardness that cannot be abraded.

[0113] The scraping component 61 is located at the bottom of the extension 60, and the end near the ultrasonic probe 20 is set as a tip. It is used to scrape off the used coupling agent. In conjunction with the moving detection end, it realizes simultaneous detection (roughness), discharge (coupling agent), use (coupling agent), and scraping (coupling agent). It has a certain degree of intelligence and can automate the process, avoiding defects caused by manual processing.

[0114] The first shaft 611 is the rotating shaft of the scraper 61, which is fixedly connected to the center of the top of the scraper 61 and rotatably connected to the end of the extension 60 away from the clamp 30.

[0115] Two second shafts 612 are symmetrically fixedly connected to the top of the scraper 61. The symmetrical arrangement ensures that the scraper 61 is subjected to balanced force when the two elastic members 62 generate force, and avoids the scraper 61 being pulled off course or stuck due to unbalanced force on both sides.

[0116] Two elastic members 62 are each rotatably connected at one end to the clamp 30 and at the other end to the corresponding second shaft 612, providing the scraping member 61 with a force that constantly rotates along the first shaft 611. Figure 12 As shown, the elastic element 62 provides a pulling force to the scraper 61 toward the clamp 30, causing the scraper 61 to have a counterclockwise rotation tendency. Thus, when the detection end is attached to the surface of the object being tested, the end of the scraper 61 near the ultrasonic probe 20 is pressed tightly against the surface of the object downwards. Under the pulling force of the two elastic elements 62, it is always in close contact, avoiding the situation where the scraper 61 shakes due to the roughness of the object surface, making it difficult to remove the coupling agent attached to it.

[0117] like Figure 12 As shown, the shortest distance between the scraping member 61 and the clamp 30 is greater than the shortest distance between the two second shafts 612 and the clamp 30. This means that when the two elastic members 62 apply a pulling force to the scraping member 61, the force is located on the side of the scraping member 61 away from the ultrasonic probe 20, thereby causing the scraping member 61 to have a counterclockwise rotation tendency, so as to achieve the scraping effect of the scraping member 61.

[0118] And such as Figures 1-4 As shown, due to the presence of the telescopic rod 41, the closed shell 40 in the coating mechanism is at the highest point in the entire detection end. Therefore, when using the detection end, the closed shell 40 is often held by hand to move the detection end. Hence, the outer sidewall of the detection end is provided with an anti-slip coating. Furthermore, since the coating mechanism is located between the ultrasonic probe 20 and the detector 50 and other structures, the rear of the detection end (relative to the forward direction) is always greater than the front, regardless of whether the coating mechanism is fully loaded with coupling agent. Since the scraping mechanism needs to scrape off the residual coupling agent close to the workpiece surface, the greater weight at the rear will naturally increase the positive pressure of the scraper 61 on the surface. Even without applying additional downward pressure, the scraping and ultrasonic probe 20 detection effects can be guaranteed. It is also suitable for upward detection (such as on a ceiling), where the scraper 61 at the rear always presses against the surface to prevent the scraper 61 from detaching due to gravity. To prevent the detection end from tilting upwards due to its low weight, the bottoms of the detector 50, discharge channel 432, baffle 45, and ultrasonic probe 20 can be made completely flush (coplanar), and the scraper 61 can be placed below this plane in its natural state. When the detection end is placed on an object surface, the scraper 61 is pressed by the object and rotates clockwise (towards...). Figure 4(From the perspective of the field of view), thereby prying down the entire front end of the detection end, so that the lighter detector 50 at the front end of the detection end is pressed tightly against the surface of the object, while the scraping part 61 can still be pressed tightly against the surface of the object to complete the scraping under the pulling force of the two elastic parts 62.

[0119] The following is the complete working process and working principle of the above embodiments:

[0120] As the detection end completes ultrasonic testing and continues to advance along the object surface, the scraping mechanism located behind the ultrasonic probe 20 begins to operate. Because the rear of the entire detection end (the side where the scraping mechanism is located) is heavier than the front due to the mass distribution of components such as the coating mechanism, the weight at the rear naturally increases the positive pressure of the scraping element 61 on the object surface, enhancing the scraping effect. Simultaneously, the two elastic elements 62 consistently provide a pulling force to the scraping element 61, causing it to rotate around the first axis 611, keeping its tip, closest to the ultrasonic probe 20, in constant contact with the object surface. When the detection end is placed on the object surface, because the tip of the scraping element 61 is naturally lower than the bottom plane of the detector 50, the discharge channel 432, and the ultrasonic probe 20, the object surface will press upwards against the scraping element 61, causing it to rotate clockwise around the first axis 611. This leverages the entire front end of the detection end to press down, ensuring that the lighter detector 50 is in close contact with the object surface. The tension of the elastic element 62 ensures that the scraping element 61 remains in contact with the surface of the object as it undulates, thoroughly scraping away the coupling agent remaining after the ultrasonic probe 20 is used. Therefore, the scraping mechanism removes residual coupling agent to avoid contaminating the workpiece surface, and stabilizes the overall posture of the detection end through rear weighting and lever counterweight effects, ensuring the fit of the front-end detection and the reliability of the scraping.

[0121] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultrasonic flaw detector for engineering quality, characterized in that, include: The detection end includes a detector (50), a coating mechanism, an ultrasonic probe (20) arranged sequentially along the forward direction, and a connector disposed on the outside of the detector (50), the coating assembly and the ultrasonic probe (20); The detector (50) is used to detect the roughness of a certain part of the surface of the object to be tested in front of the ultrasonic probe (20); The coating component is used to discharge coupling agent onto the surface of the object when the surface roughness of the object is higher than a preset value, for use by the ultrasonic probe (20); The detection end also includes: A scraping mechanism, disposed on the connector and located on the side of the ultrasonic probe (20) away from the coating assembly, is used to scrape off the coupling agent used by the ultrasonic probe (20) and increase the weight behind the detection end.

2. The ultrasonic flaw detector for engineering quality according to claim 1, characterized in that: The application mechanism includes a driving component and a dispensing component; The driving component includes: The enclosed shell (40) has an anti-slip coating on its side walls; The base (401) has two ends, one end of which is fixedly connected to the closed shell (40) and the other end is fixedly connected to the connector, for fixing the closed shell (40) to the connector; The telescopic rod (41) is located inside the closed shell (40) and has an output end and a fixed end. The fixed end is fixedly connected to the top surface inside the closed shell (40), and the output end is vertically downward. The pressure plate (42) is fixedly connected to the output end of the telescopic rod (41) and moves vertically under the drive of the output end; The discharge assembly includes: Storage component (43) is located directly below the closed shell (40) and its top is aligned with the top of the closed shell (40). It contains coupling agent and has a reference line on its inner wall. Several connecting blocks (431) are respectively fixed to the outer sidewall of the storage component (43), and their tops are all in the same horizontal plane, for fitting with the bottom of the connecting component and then being fixed by bolts; The discharge channel (432) is fixedly connected to the bottom of the storage piece (43) and is configured such that the opening gradually increases from top to bottom; Two limiting blocks (433) are respectively disposed on both sides of the discharge channel (432); A sealing ring (44) is bonded to the top of the storage piece (43) and located between the closed shell (40) and the storage piece (43) to seal the gap between the closed shell (40) and the storage piece (43); A shield (45) is fitted onto the outer side of the discharge channel (432) away from the storage piece (43) and is limited by two limiting blocks (433) to guide the coupling agent discharged by the application mechanism.

3. The ultrasonic flaw detector for engineering quality according to claim 2, characterized in that: The storage component (43), the plurality of connecting blocks (431), the discharge channel (432) and the two limiting blocks (433) are integrally formed.

4. An ultrasonic flaw detector for engineering quality according to claim 2, characterized in that: The connector includes: A clamp (30) is attached to the outside of the ultrasonic probe (20) to fix the connector to the ultrasonic probe (20); A connecting hole (31) is provided on one side of the clamp (30), sleeved on the outside of the storage piece (43), and located on the top of several connecting blocks (431), and the several connecting blocks (431) are fixedly connected by bolts; The connecting platform (32) is located on the side of the connecting hole (31) away from the clamp (30), and its bottom is fixedly connected to the detector (50); An extension platform (33) is provided on the side wall of the connecting platform (32).

5. An ultrasonic flaw detector for engineering quality according to claim 1, characterized in that: The connector is integrally formed.

6. An ultrasonic flaw detector for engineering quality according to claim 4, characterized in that: The detection end also includes: The protective shell (51) is fixedly connected to the top of the connecting platform (32); The processor (52) is fixedly connected inside the protective shell (51); The controller (53) is equipped with several control buttons.

7. An ultrasonic flaw detector for engineering quality according to claim 6, characterized in that: The processor (52) is electrically connected to the telescopic rod (41), the detector (50) and the controller (53) respectively, and is used to regulate the working state of the telescopic rod (41) according to the data detected by the detector (50) and the manual control of the controller (53).

8. An ultrasonic flaw detector for engineering quality according to claim 4, characterized in that: The scraping mechanism includes: The extension (60) is a rod-shaped structure, with one end fixedly connected to the side wall of the clamp (30) away from the coating mechanism; A scraper (61) is provided at the bottom of the extension (60), and the end near the ultrasonic probe (20) is set as a tip for scraping off the coupling agent; The first shaft (611) is fixedly connected to the top center of the scraper (61) and rotatably connected to the end of the extension (60) away from the clamp (30); Two second shafts (612) are symmetrically fixedly connected to the top of the scraper (61); The two elastic members (62) are rotatably connected at one end to the clamp (30) and at the other end to the corresponding second shaft (612), providing the scraper (61) with a force that rotates along the first shaft (611) at all times.

9. An ultrasonic flaw detector for engineering quality according to claim 8, characterized in that: The shortest distance between the scraper (61) and the clamp (30) is greater than the shortest distance between the two second shafts (612) and the clamp (30).

10. An ultrasonic flaw detector for engineering quality according to claim 1, characterized in that: Also includes: Main body (10); The connecting line (11) is connected at one end to the main body (10) and at the other end to the ultrasonic probe (20), and is used to adjust the working state of the ultrasonic probe (20) and record the detection results of the ultrasonic probe (20).

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