An ultrasonic leak detection scanning tool

Abstract

The utility model provides a kind of ultrasonic leak detection scanning tool, including symmetrical and interval ultrasonic emission component and ultrasonic receiving component;Ultrasonic emission component and ultrasonic receiving component all include first support frame, second support frame, support platform, horizontal positioning unit, lifting positioning unit and ultrasonic detection probe;First support frame and second support frame are left and right interval arrangement, support platform is left and right direction horizontal arrangement, and the left and right ends of support platform are respectively arranged on first support frame and second support frame;Horizontal positioning unit is left and right direction horizontal arrangement on support platform;Lifting positioning unit is arranged on horizontal positioning unit, and realizes the moving positioning of left and right direction by horizontal positioning unit;Ultrasonic detection probe is detachably connected on lifting positioning unit.The utility model has the advantages that the tool utilizes mechanical drive to realize the automation of scanning process, to significantly improve detection efficiency and accuracy, while reducing labor cost and labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic testing technology, and more specifically, to an ultrasonic leak detection scanning fixture. Background Technology

[0002] In industrial manufacturing and product testing, sound insulation performance is a crucial indicator for many devices, such as automobiles, home appliances, and industrial machinery. To ensure effective sound insulation, sound-insulating sheet metal structures are typically used on the equipment's casing. However, these sheet metal structures often have multiple mounting openings for wiring, ventilation, or connecting other components. Before conducting sound insulation tests, these mounting openings must be completely sealed with steel plates or other sealing materials to ensure the accuracy of the test results. Currently, whether there is sound leakage at the sealed mounting openings requires ultrasonic leak detection technology.

[0003] Traditional ultrasonic leak detection methods rely primarily on manual operation. Specifically, an ultrasonic transmitter and receiver are placed on either side of the soundproof sheet metal, and two operators use handheld devices to scan each sealed installation opening. If the receiver detects the ultrasonic signal emitted by the transmitter, it indicates a poor seal and sound leakage. While simple and direct, this method has several significant drawbacks: First, manual operation requires multiple operators and is time-consuming, especially when there are many or complexly distributed installation openings, making it difficult to meet the high-efficiency requirements of modern industry. Second, the stability of handheld devices is poor, and the operator's skill level or fatigue may affect the accuracy of the results, leading to missed detections or misjudgments. Third, prolonged repetitive handheld operation can easily cause operator fatigue, affecting work efficiency and potentially causing occupational health problems. Fourth, for large or complex soundproof sheet metal structures, manual scanning cannot cover all areas, especially at heights or in confined spaces, significantly reducing the detection effectiveness. Utility Model Content

[0004] This invention aims to address the technical problems of existing ultrasonic leak detection scanning being time-consuming, labor-intensive, inconvenient to operate, and having low detection accuracy and efficiency. To overcome the shortcomings of the prior art, this invention provides an ultrasonic transmitting component and an ultrasonic receiving component symmetrically arranged on both sides of a soundproof sheet metal, which utilizes mechanical drive to automate the scanning process, thereby significantly improving detection efficiency and accuracy while reducing labor costs and labor intensity.

[0005] To achieve the purpose of this utility model, the following technical solution is adopted: An ultrasonic leak detection scanning fixture includes symmetrically spaced ultrasonic transmitting and receiving components. Each component comprises a first support frame, a second support frame, a support platform, a horizontal positioning unit, a lifting positioning unit, and an ultrasonic detection probe. The first and second support frames are spaced apart horizontally, and the support platform is horizontally positioned in the left-right direction, with its left and right ends respectively mounted on the first and second support frames. The horizontal positioning unit is horizontally positioned on the support platform. The lifting positioning unit is mounted on the horizontal positioning unit and enables left-right movement and positioning. The ultrasonic detection probe is mounted on the lifting positioning unit and enables lifting and lowering positioning. During scanning, a sound-insulating sheet metal is placed between the ultrasonic transmitting and receiving components. The ultrasonic detection probes of the ultrasonic transmitting and receiving components move synchronously and aligned to scan the mounting openings on the sound-insulating sheet metal for leak detection. This fixture replaces manual hand-held operation with mechanical drive, achieving automatic probe alignment and synchronous movement, significantly improving scanning speed, and is particularly suitable for detecting multiple mounting openings or large-area sheet metal. The horizontal and vertical positioning units work together to ensure precise probe positioning in both directions, avoiding offsets or jitter caused by manual operation and reducing missed detections or misjudgments. The symmetrically designed support frame and platform provide a stable mechanical foundation, suitable for inspecting large or irregularly shaped sheet metal, overcoming the limitations of manual operation in reaching high places or confined spaces. No multiple operators are required, reducing reliance on skilled workers and avoiding fatigue from prolonged handheld operation.

[0006] Preferably, the horizontal positioning unit is a horizontal drive electric cylinder; the cylinder body of the horizontal drive electric cylinder is mounted on the support platform, and the lifting positioning unit is mounted on the positioning plate of the horizontal drive electric cylinder via a connecting part. The electric cylinder, with its high rigidity and repeatability, ensures the stability and consistency of the probe's horizontal movement, making it suitable for scenarios requiring repeated scanning. The electric cylinder's speed and stroke can be controlled by a program, flexibly adapting to different sizes of sheet metal or mounting openings, improving the versatility of the tooling.

[0007] Preferably, the lifting and positioning unit includes a lifting drive motor, a lead screw, and a positioning block. The lifting drive motor is mounted on the connecting part, the lead screw is vertically positioned, one end of the lead screw is fixedly connected to the drive shaft of the lifting drive motor, and the other end of the lead screw is rotatably connected to the connecting part. The positioning block is threadedly engaged with the lead screw and is lifted and positioned on the lead screw. The ultrasonic testing probe is fixedly mounted on the positioning block. The lead screw transmission structure provides self-locking and high positioning accuracy, preventing displacement of the ultrasonic testing probe due to gravity or vibration during lifting and lowering, thus ensuring testing stability. Furthermore, the separate design of the lifting drive motor and the lead screw facilitates disassembly and maintenance, reducing long-term maintenance costs. In conjunction with the horizontal drive cylinder, it enables precise positioning of the probe at any position in the plane, fully covering critical areas such as the edges and corners of the mounting opening.

[0008] Preferably, the connecting part includes an L-shaped support plate and a U-shaped support plate. The horizontal plate of the L-shaped support plate is horizontally mounted on the positioning plate of the horizontal drive cylinder. The middle part of the U-shaped support plate is fixedly connected to the vertical plate of the L-shaped support plate. The lifting drive motor is vertically mounted on the upper part of the U-shaped support plate, and the drive shaft passes through the upper part of the U-shaped support plate and is connected to the upper end of the lead screw via a coupling. The lower end of the lead screw is rotatably connected to the lower part of the U-shaped support plate via a bearing. Direct connection between the L-shaped support plate and the positioning plate of the horizontal drive cylinder simplifies the assembly process and improves production assembly efficiency. The U-shaped support plate simultaneously fixes the upper and lower ends of the lead screw, enhancing torsional resistance and preventing swaying during probe movement. The modular design saves installation space, making the overall structure more compact and adaptable to the needs of confined environments such as workshops.

[0009] Preferably, the positioning block is provided with a limiting groove that fits into the ultrasonic testing probe; T-shaped limiting grooves are connected on both sides of the limiting groove; T-shaped inserts are provided on the corresponding sides of the ultrasonic testing probe; the T-shaped inserts are inserted into the T-shaped limiting grooves, and there is frictional resistance between the outer wall of the T-shaped inserts and the inner wall of the T-shaped limiting groove to prevent the ultrasonic testing probe from falling off. By matching the shape of the limiting groove with the ultrasonic testing probe, loosening or displacement of the ultrasonic testing probe during scanning is avoided, ensuring the stability of signal transmission / reception. The limiting groove structure facilitates the installation and replacement of the ultrasonic testing probe, adapting to the testing requirements of different frequencies or models.

[0010] Preferably, each of the first support frame and the second support frame comprises an outer rod, an inner rod and a locking screw; the inner rod is connected to the outer rod in a lifting manner, the locking screw is transversely mounted on the outer rod, and the inner end of the locking screw passes through the outer rod and abuts against the outer wall of the inner rod. The height of the inner rod is adjusted to adapt to sound insulation sheet metal of different thicknesses, so that the application range of the tooling is expanded. The locking screw directly abuts against the inner rod, so that the support frame is prevented from loosening in the detection process, and the stability of the overall structure is ensured. The overall height can be adjusted according to the installation position of the sound insulation sheet metal, so that the environmental adaptability of the device is enhanced.

[0011] The utility model has the advantages that: the ultrasonic leak detection scanning tool of the present application solves the problems of low efficiency and large error of traditional manual scanning through a symmetrical automatic design, and combined with the refined designs such as electric cylinder driving, screw lifting, high-rigidity connecting part, probe limiting and adjustable support frame, realizes high-efficiency, accurate, stable and high-availability leak detection, and is significantly superior to the prior art. Description of Drawings

[0012] Figure 1 is a top schematic view of the ultrasonic leak detection scanning tool of the utility model. Figure 2 is a side schematic view of the ultrasonic leak detection scanning tool of the utility model. Figure 3 is a structural schematic view of the connecting part of the utility model. Figure 4 is a structural schematic view of the positioning block of the utility model.

[0013] Figure 5 is a structural schematic view of the ultrasonic detection probe of the utility model.

[0014] Description of Reference Numerals: 1, First support frame; 11, Outer rod; 12, Inner rod; 13, Locking screw; 2, Second support frame; 3, Supporting platform; 4, Horizontal positioning unit; 41, Positioning plate; 5, Lifting positioning unit; 51, Lifting driving motor; 52, Lead screw; 53, Positioning block; 54, Limiting slot; 55, T-shaped limiting slot; 6, Ultrasonic detection probe; 61, T-shaped insert block; 7, Connecting part; 71, L-shaped supporting plate; 72, U-shaped supporting plate. Detailed Description

[0015] First of all, it should be understood by those skilled in the art that these embodiments are only used to explain the technical principle of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adjust the embodiments according to requirements to adapt to specific application scenarios.

[0016] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0017] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] like Figures 1 to 5As shown, an ultrasonic leak detection scanning fixture includes symmetrically spaced ultrasonic transmitting and receiving components. Both the ultrasonic transmitting and receiving components include a first support frame 1, a second support frame 2, a support platform 3, a horizontal positioning unit 4, a lifting positioning unit 5, and an ultrasonic detection probe 6. The first support frame 1 and the second support frame 2 are aligned horizontally and spaced apart. The support platform 3 is horizontally positioned in the left-right direction, with its left and right ends respectively mounted on the first support frame 1 and the second support frame 2. The horizontal positioning unit 4 is horizontally positioned on the support platform 3 in the left-right direction. The lifting positioning unit 5 is mounted on the horizontal positioning unit 4 and achieves left-right movement and positioning through the horizontal positioning unit 4. The ultrasonic detection probe 6 is detachably connected to the lifting positioning unit 5, and its lifting and lowering positioning is achieved through the lifting positioning unit 5. During scanning, a sound-insulating sheet metal is placed between the ultrasonic transmitting and receiving components. The ultrasonic detection probe 6 (for transmitting) of the ultrasonic transmitting component and the ultrasonic detection probe 6 (for receiving) of the ultrasonic receiving component move synchronously and aligned to perform leak detection scanning on the mounting port on the sound-insulating sheet metal. This fixture replaces manual hand-held operation with mechanical drive, achieving automatic probe alignment and synchronous movement, significantly improving scanning speed, and is especially suitable for the inspection of sheet metal with multiple mounting ports or large areas. The horizontal positioning unit 4 and the lifting positioning unit 5 work together to ensure precise probe positioning in both horizontal and vertical directions, avoiding offset or jitter caused by manual operation and reducing missed detections or false judgments. The symmetrically designed support frame and support platform 3 provide a stable mechanical foundation, suitable for the inspection of large or irregularly shaped sheet metal, overcoming the limitations of manual operation in reaching high places or narrow spaces. No multiple operators are required, reducing reliance on skilled workers and avoiding fatigue caused by prolonged hand-held operation.

[0020] like Figure 1 and Figure 2 As shown, both the first support frame 1 and the second support frame 2 include an outer rod 11, an inner rod 12, and a locking screw 13. The inner rod 12 is vertically connected to the outer rod 11, and the locking screw 13 is horizontally installed on the outer rod 11, with its inner end passing through the outer rod 11 and abutting against the outer wall of the inner rod 12. The height of the inner rod 12 can be adjusted to accommodate sound-insulating sheet metal of different thicknesses, expanding the applicability of the tooling. The locking screw 13 directly abuts against the inner rod 12, preventing the support frame from loosening during testing and ensuring the overall structural stability. The overall height can be adjusted according to the installation position of the sound-insulating sheet metal, such as ground placement or suspended mounting, enhancing the environmental adaptability of the equipment.

[0021] like Figure 2 and Figure 3As shown, the horizontal positioning unit 4 is a horizontal drive electric cylinder; the cylinder body of the horizontal drive electric cylinder is mounted on the support platform 3, and the lifting positioning unit 5 is mounted on the positioning plate 41 of the horizontal drive electric cylinder via the connecting part 7. The electric cylinder possesses high rigidity and repeatability, ensuring the stability and consistency of the probe's horizontal movement, making it suitable for scenarios requiring repeated scanning. The electric cylinder's speed and stroke can be controlled by a program, flexibly adapting to different sizes of sheet metal or mounting openings, improving the versatility of the tooling.

[0022] like Figure 3 As shown, the lifting and positioning unit 5 includes a lifting drive motor 51, a lead screw 52, ​​and a positioning block 53. The lifting drive motor 51 is mounted on the connecting part 7. The lead screw 52 is vertically positioned, with one end fixedly connected to the drive shaft of the lifting drive motor 51 and the other end rotatably connected to the connecting part 7. The positioning block 53 is threadedly engaged with the lead screw 52 and is lifted and positioned on the lead screw 52. The ultrasonic testing probe 6 is fixedly mounted on the positioning block 53. The lead screw 52 transmission structure has self-locking and high positioning accuracy, preventing displacement of the ultrasonic testing probe 6 due to gravity or vibration during lifting and lowering, thus ensuring testing stability. Furthermore, the separate design of the lifting drive motor 51 and the lead screw 52 facilitates disassembly and maintenance, reducing maintenance costs during long-term use. In conjunction with the horizontal drive cylinder, it enables precise positioning of the probe at any position in the plane, fully covering key areas such as the edges and corners of the mounting opening.

[0023] like Figure 3 As shown, the connecting part 7 includes an L-shaped support plate 71 and a "U"-shaped support plate 72. The horizontal plate of the L-shaped support plate 71 is horizontally mounted on the positioning plate 41 of the horizontal drive cylinder. The middle part of the "U"-shaped support plate 72 is fixedly connected to the vertical plate of the L-shaped support plate 71. The lifting drive motor 51 is vertically mounted on the upper part of the "U"-shaped support plate 72, and its drive shaft passes through the upper part of the "U"-shaped support plate 72 and is connected to the upper end of the lead screw 52 via a coupling. The lower end of the lead screw 52 is rotatably connected to the lower part of the "U"-shaped support plate 72 via a bearing. The direct connection between the L-shaped support plate 71 and the positioning plate 41 of the horizontal drive cylinder simplifies the assembly process and improves production assembly efficiency. The "U"-shaped support plate 72 simultaneously fixes the upper and lower ends of the lead screw 52, ​​enhancing its torsional resistance and preventing swaying when the probe moves. The modular design saves installation space, making the overall structure more compact and adaptable to the needs of small environments such as workshops.

[0024] like Figure 4 and Figure 5As shown, the positioning block 53 is provided with a limiting groove 54 which is in limit fit with the ultrasonic testing probe 6; opposite two sides of the limiting groove 54 are provided with T-shaped limiting grooves 55 in communication; two sides of the ultrasonic testing probe 6 are provided with T-shaped inserting blocks 61 corresponding to the T-shaped limiting grooves 55; the T-shaped inserting blocks 61 are inserted and fitted into the T-shaped limiting grooves 55, and a frictional resistance for preventing the ultrasonic testing probe 6 from falling off is provided between the outer wall of the T-shaped inserting block 61 and the inner wall of the T-shaped limiting groove 55. The shape matching between the limiting groove 54 and the ultrasonic testing probe 6 prevents the ultrasonic testing probe 6 from loosening or shifting during scanning, and ensures the stability of signal transmission / reception. The limiting groove structure facilitates the installation and replacement of the ultrasonic testing probe 6, adapts to testing requirements of different frequencies or models, and the cooperation between the T-shaped limiting grooves 55 and the T-shaped inserting blocks 61 conveniently realizes detachable connection. This is only one mode in this embodiment, and detachable connection can also be realized by means of buckles or connecting screws.

[0025] The present utility model has the following five advantages: First, realize automatic detection and improve efficiency: the horizontal positioning unit 4 and the lifting positioning unit 5 drive the ultrasonic testing probe 6 to move automatically, which replaces the traditional manual hand-held operation, does not require multi-person cooperation, greatly shortens the testing time, is especially suitable for batch testing of sound-insulating sheet metal with multiple installation openings and complex structures, and meets the requirements of high-efficiency production Second, improve detection accuracy and reliability: the mechanical structure ensures that the ultrasonic testing probes 6 on both sides move synchronously and in alignment, avoids the problems of distance and angle fluctuation and poor synchronism in manual operation, and reduces missed detection and misjudgment; high-precision transmission of components such as lead screws 52 and electric cylinders ensures accurate positioning of the ultrasonic testing probe 6 and improves signal stability.

[0026] Third, reduce labor intensity and cost: automatic operation reduces manual repeated labor, reduces the fatigue of operators and occupational health risks, saves labor costs at the same time, and solves the problem that the traditional method has high dependence on personnel skills.

[0027] Fourth, enhance adaptability to environments and scenarios: the height of the support frame is adjustable, which can adapt to sound-insulating sheet metal with different thicknesses and installation positions; the mechanical structure can cover areas that are difficult for humans to reach, such as high places and narrow spaces, and expands the detection range.

[0028] Fifth, stable and durable structure: the connection structure is optimized through L-shaped support plates 71 and U-shaped support plates 72, which ensures rigid connection and cooperative work of all components, reduces transmission wear, prolongs the service life of the equipment, and the probe limiting groove design enhances installation stability.

[0029] In the description of the embodiments of this application, it should be noted that the terms "inner" and "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0030] In the description of this application, the references to terms such as "an embodiment," "some embodiments," "in this embodiment," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An ultrasonic leak detection scanning fixture, characterized in that, comprising symmetrically spaced ultrasonic transmitting assemblies and ultrasonic receiving assemblies; both the ultrasonic transmitting assemblies and the ultrasonic receiving assemblies comprise a first support frame (1), a second support frame (2), a support platform (3), a horizontal positioning unit (4), a lifting positioning unit (5) and an ultrasonic detection probe (6); the first support frame (1) and the second support frame (2) are arranged at an interval from left to right, the support platform (3) is horizontally arranged along the left-right direction, and the left end and the right end of the support platform (3) are respectively arranged on the first support frame (1) and the second support frame (2); the horizontal positioning unit (4) is horizontally arranged on the support platform (3) along the left-right direction; the lifting positioning unit (5) is arranged on the horizontal positioning unit (4), and realizes movement positioning in the left-right direction through the horizontal positioning unit (4); the ultrasonic detection probe (6) is detachably connected to the lifting positioning unit (5), and realizes lifting positioning of the ultrasonic detection probe (6) through the lifting positioning unit (5); during scanning, a sound-insulating sheet metal is placed between the ultrasonic transmitting assembly and the ultrasonic receiving assembly; leak detection scanning is performed on the mounting opening on the sound-insulating sheet metal through synchronous and aligned movement of the ultrasonic detection probe (6) of the ultrasonic transmitting assembly and the ultrasonic detection probe (6) of the ultrasonic receiving assembly.

2. The ultrasonic leak detection scanning fixture according to claim 1, characterized in that, The horizontal positioning unit (4) is a horizontal driving electric cylinder; a cylinder body of the horizontal driving electric cylinder is arranged on the support platform (3), and the lifting positioning unit (5) is arranged on a positioning plate (41) of the horizontal driving electric cylinder through a connecting part (7).

3. The ultrasonic leak detection scanning fixture according to claim 2, characterized in that, The lifting positioning unit (5) comprises a lifting driving motor (51), a lead screw (52) and a positioning block (53); the lifting driving motor (51) is arranged on the connecting part (7), the lead screw (52) is vertically arranged, one end of the lead screw (52) is fixedly connected with a driving shaft of the lifting driving motor (51), the other end of the lead screw (52) is rotatably connected to the connecting part (7), the positioning block (53) is in threaded fit with the lead screw (52), and the positioning block (53) is connected to the lead screw (52) in a lifting and positioning manner; the ultrasonic detection probe (6) is fixedly installed on the positioning block (53).

4. The ultrasonic leak detection scanning fixture according to claim 3, characterized in that, The connecting part (7) comprises an L-shaped support plate (71) and a C-shaped support plate (72); a horizontal plate of the L-shaped support plate (71) is horizontally arranged on the positioning plate (41) of the horizontal driving electric cylinder, the middle part of the C-shaped support plate (72) is fixedly connected with a vertical plate of the L-shaped support plate (71), the lifting driving motor (51) is vertically arranged at the upper part of the C-shaped support plate (72), the driving shaft passes through the upper part of the C-shaped support plate (72) and is connected with the upper end of the lead screw (52) through a coupling, and the lower end of the lead screw (52) is rotatably connected to the lower part of the C-shaped support plate (72) through a bearing.

5. The ultrasonic leak detection scanning fixture according to claim 3, characterized in that, The positioning block (53) is provided with a limiting groove (54) that is matched with the ultrasonic testing probe (6); T-shaped limiting grooves (55) are provided on both sides of the limiting groove (54); T-shaped inserts (61) are provided on both sides of the ultrasonic testing probe (6); the T-shaped inserts (61) are inserted and matched in the T-shaped limiting groove (55), and there is frictional resistance between the outer wall of the T-shaped inserts (61) and the inner wall of the T-shaped limiting groove (55) to prevent the ultrasonic testing probe (6) from falling off.

6. The ultrasonic leak detection scanning fixture according to claim 1, characterized in that, The first support frame (1) and the second support frame (2) both include an outer rod (11), an inner rod (12) and a locking screw (13); the inner rod (12) is vertically connected to the outer rod (11), and the locking screw (13) is horizontally installed on the outer rod (11), with the inner end of the locking screw (13) passing through the outer rod (11) and abutting against the outer wall of the inner rod (12).

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