Handheld ultrasonic flaw detection device

Abstract

The utility model relates to a handheld ultrasonic flaw detection device. The handheld ultrasonic flaw detection device comprises an equipment frame, a mounting plate, an adjusting rod, two walking clamping parts and more than two ultrasonic detectors, the bottom of the equipment frame is of an opening structure, and the mounting plate is arranged at the bottom opening of the equipment frame; the more than two ultrasonic detectors are sequentially arranged on the bottom surface of the mounting plate, the detection ends of the more than two ultrasonic detectors face downwards and extend out of the equipment frame, and the ultrasonic detectors are suitable for being in contact with a steel rail located below the equipment frame; the two walking clamping parts are arranged at the two ends of the equipment frame correspondingly. Each walking clamping part is provided with two walking wheels, and the two walking wheels can move in the direction facing or away from each other. The two walking wheels are suitable for being placed on the two sides of a rail web of a steel rail. The adjusting rod comprises a fixed cylinder and a telescopic rod; the fixed cylinder is mounted on the top surface of the equipment frame; the telescopic rod is movably arranged in the fixed cylinder and can move in the body length direction of the telescopic rod; and a handle is arranged on the side wall of the telescopic rod.

Description

Technical Field

[0001] This application relates to the field of rail flaw detection technology, and in particular to a handheld ultrasonic flaw detection device. Background Technology

[0002] In the rail transportation sector, the quality and integrity of rail welds are crucial for ensuring train operation safety. Poor welding during the rail welding process can lead to cracks, porosity, and incomplete fusion in the welds, potentially causing rail structural failure, track damage, increased maintenance costs, and even serious safety accidents. Therefore, regular and precise flaw detection of rail welds is a key aspect of maintaining railway safety.

[0003] In traditional flaw detection technology, workers directly hold an ultrasonic detector to scan the weld seams of the rail. After inspecting one weld seam, they hold the ultrasonic detector to the weld seam of the second weld seam. However, directly holding the detector by hand makes the operation cumbersome and requires a lot of manual labor. Summary of the Invention

[0004] In view of this, this application proposes a handheld ultrasonic flaw detection device.

[0005] According to one aspect of this application, a handheld ultrasonic flaw detection device is provided, comprising: an equipment frame, a mounting plate, an adjusting rod, two walking clamps, and two or more ultrasonic detectors;

[0006] The bottom of the equipment rack is open, and the mounting plate is installed at the bottom opening of the equipment rack;

[0007] Two or more ultrasonic detectors are arranged sequentially on the bottom surface of the mounting plate. The detection ends of the two or more ultrasonic detectors are all facing downwards and protrude from the equipment frame, which is suitable for contacting the steel rails located under the equipment frame.

[0008] Two traveling clamping parts are respectively set at both ends of the equipment frame; each traveling clamping part is equipped with two traveling wheels, and the two traveling wheels can move in directions toward or away from each other; the two traveling wheels are suitable for placement on both sides of the rail web;

[0009] The adjusting rod includes a fixed cylinder and a telescopic rod; the fixed cylinder is installed on the top surface of the equipment frame; the telescopic rod is movably installed inside the fixed cylinder and can move along its length; a handle is provided on the side wall of the telescopic rod.

[0010] In one possible implementation, a fixing sleeve is fitted onto the outside of the telescopic rod; the fixing sleeve is detachably connected to the telescopic rod via a fixing pin.

[0011] In one possible implementation, a fixing hole is provided on the side wall of the fixing cylinder;

[0012] The telescopic rod has two or more adjustment holes on its side wall, and the two or more adjustment holes are arranged sequentially along the length of the telescopic rod.

[0013] The fixing pin is used to sequentially insert into the fixing hole and the adjusting hole to fix the telescopic rod inside the fixing cylinder.

[0014] In one possible implementation, lighting is provided at both ends of the equipment rack.

[0015] In one possible implementation, the walking clamping part includes: a fixed rod, two clamping rods and a spring; the fixed rod is disposed inside the cavity of the equipment frame, one end of the two clamping rods is rotatably connected to the fixed rod, the other end of the two clamping rods is respectively provided with a walking wheel, and the spring is disposed between the two clamping rods to apply tension to the two clamping rods.

[0016] In one possible implementation, ten ultrasonic detectors are provided, and the ten ultrasonic detectors are evenly arranged along the length of the mounting plate.

[0017] One possible implementation also includes: a walking limit part is provided at the bottom of the mounting plate.

[0018] In one possible implementation, the travel limiter includes: two oppositely arranged auxiliary wheels; suitable for contacting the two sides of the rail head respectively.

[0019] Beneficial effects: The opening at the bottom of the equipment frame allows space for the traveling clamping unit and the ultrasonic detector, enabling the traveling clamping unit to extend to the bottom of the equipment frame to clamp the rails and allowing the ultrasonic detector to contact the rail surface for detection. The movable connection between the telescopic rod and the fixed cylinder allows adjustment of the length of the telescopic rod extending from the fixed cylinder to adjust the handle height. The traveling wheels of the two traveling clamping units can be adjusted in distance to accommodate rails of different models or widths. The handle on the telescopic rod improves the overall ease of movement of the equipment, allowing operators to push the equipment frame along the length of the rails. During movement, multiple ultrasonic detectors follow and perform inspections on multiple welds. This application effectively solves the problems of low efficiency, long time consumption, complex operation, and insufficient accuracy in traditional flaw detection methods; it simplifies the operation process and reduces the physical burden on operators.

[0020] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0022] Figure 1 This diagram shows the main structure of the handheld ultrasonic flaw detector according to an embodiment of this application;

[0023] Figure 2 This diagram shows the main structure of the handheld ultrasonic flaw detector according to an embodiment of this application;

[0024] Figure 3 This diagram shows the main structure of the handheld ultrasonic flaw detector according to an embodiment of this application;

[0025] Figure 4 A partial structural diagram of the handheld ultrasonic flaw detector according to an embodiment of this application is shown;

[0026] Figure 5 A bottom view of the handheld ultrasonic flaw detector according to an embodiment of this application is shown;

[0027] Figure 6 A partial structural diagram of the handheld ultrasonic flaw detector according to an embodiment of this application is shown;

[0028] Figure 7 This diagram illustrates the main structural structure of the device rack according to an embodiment of this application.

[0029] Figure 8 This diagram shows the main structure of the walking clamping part according to an embodiment of this application;

[0030] Figure 9 This diagram illustrates the main structure of the fixed cylinder and telescopic rod according to an embodiment of this application.

[0031] Figure 10 This diagram illustrates the working state of the handheld ultrasonic flaw detector according to an embodiment of this application. Detailed Implementation

[0032] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0033] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0036] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0037] Figure 1 This diagram shows the main structure of the handheld ultrasonic flaw detector according to an embodiment of this application; Figure 2 This invention relates to a handheld ultrasonic flaw detection device according to an embodiment of the present application. Figure 1 and Figure 3 As shown, this handheld ultrasonic flaw detection device includes: an equipment frame 100, a mounting plate 400, an adjusting rod, two walking clamps, and two or more ultrasonic detectors 500; the bottom of the equipment frame 100 is an open structure, and the mounting plate 400 is disposed at the bottom opening of the equipment frame 100; two or more ultrasonic detectors 500 are arranged sequentially on the bottom surface of the mounting plate 400, and the detection ends of the two or more ultrasonic detectors 500 all face downward and protrude from the equipment frame 100, suitable for contacting the rail 1000 located under the equipment frame 100; two The traveling clamping parts are respectively located at both ends of the equipment frame 100; each traveling clamping part is provided with two traveling wheels 300, and the two traveling wheels 300 can move in directions toward or away from each other; the two traveling wheels 300 are suitable for placement on both sides of the waist rail of the steel rail 1000; the adjusting rod includes: a fixed cylinder 700 and a telescopic rod 200; the fixed cylinder 700 is installed on the top surface of the equipment frame 100; the telescopic rod 200 is movably installed in the fixed cylinder 700, and the telescopic rod 200 can move along its length; a handle 210 is provided on the side wall of the telescopic rod 200.

[0038] It should be noted that the equipment frame 100 is designed to provide a mounting base and protective function for various components. The opening at the bottom of the equipment frame 100 allows space for the traveling clamping part and the ultrasonic detector 500, enabling the traveling clamping part to extend to the bottom of the equipment frame 100 to clamp the rail 1000, and allowing the ultrasonic detector 500 to contact the rail surface of the rail 1000 for detection. The movable connection between the telescopic rod 200 and the fixed cylinder 700 allows for adjusting the length of the telescopic rod 200 extending from the fixed cylinder 700 to adjust the height of the handle 200. The traveling wheels 300 of the two traveling clamping parts can be adjusted to adjust the distance between them, thereby adapting to clamp different types of rails 1000 and making the whole unit suitable for detecting different types of rails 1000. The handle 210 on the telescopic rod 200 is used to improve the mobility of the overall equipment, allowing the staff to push the equipment frame 100 along the length of the rail 1000 by the handle 210. During the movement, multiple ultrasonic detectors 500 follow the movement and perform multiple weld inspections. The arrangement of two or more ultrasonic detectors 500 can increase the number of times the same weld is inspected to ensure inspection accuracy.

[0039] In one possible implementation, such as Figure 7 As shown, the equipment rack 100 has openings on both sides, and each opening is equipped with an end cover 120. The interior of the equipment rack 100 can be opened by removing the end cover 120, thereby allowing maintenance and repair of the internal components. It should be noted that the end cover 120 can be detachably connected to the end face of the equipment rack 100 by means of bolts, but this application does not limit this.

[0040] In one possible implementation, the telescopic rod 200 has a cylindrical body with a handle 210 at the top. The handle 210 has a "Π"-shaped body, and the open end of the "Π"-shaped structure is fixedly connected to the telescopic rod 200. The handle 210 is designed to be lightweight and ergonomic, making it convenient for operators to hold and operate for extended periods.

[0041] In one possible implementation, such as Figure 1 As shown, the top of the equipment frame 100 is equipped with a fixing cylinder 700, which is sleeved on the outside of the telescopic rod 200. The fixing cylinder 700 is detachably connected to the telescopic rod 200 via a fixing pin 800. It should be noted that since the telescopic rod 200 is height-adjustable, it needs to be fixed when it is moved to a suitable working height to prevent instability and increased workload for the workers.

[0042] In one possible implementation, such as Figure 9As shown, a fixing hole 710 is provided on the side wall of the fixing cylinder 700; two or more adjusting holes 220 are provided on the side wall of the telescopic rod 200, and the two or more adjusting holes 220 are arranged sequentially along the length direction of the telescopic rod 200; the fixing pin 800 is suitable for sequentially inserting into the fixing hole 710 and the adjusting hole 220 of the telescopic rod 200 to fix the telescopic rod 200 inside the fixing cylinder 700. Figure 9 As shown, the main body of the fixed cylinder 700 is cylindrical, with a through hole 720 in the middle. The telescopic rod 200 passes through the through hole 720 of the fixed cylinder 700. A circular fixing hole 710 is opened on the outer wall of the fixed cylinder 700 to accommodate the fixing pin 800. Since the telescopic rod 200 has multiple adjustment holes 220 of different heights, the height of the telescopic rod 200 can be adjusted by aligning the fixing hole 710 with the adjustment holes 220 of different heights. Furthermore, the main body of the fixing pin 800 is cylindrical and matches the fixing hole 710 and the adjustment hole 220. Inserting the fixing pin 800 into the fixing hole 710 and the adjustment hole 220 fixes the position of the telescopic rod 200. Pulling out the fixing pin 800 allows for the height adjustment of the telescopic rod 200.

[0043] In one possible implementation, the distance between any two adjacent adjustment holes 220 is 5 cm.

[0044] Furthermore, the main body of the mounting plate 400 is a rectangular plate structure, and preferably the mounting plate 400 is integrated with the equipment rack 100.

[0045] In one possible implementation, the structure of the equipment rack 100 is as follows: Figure 7 As shown, its cross-section has a "Π" shaped structure; the inner sidewall of the equipment frame 100 has a protruding mounting part 110, and both sides of the mounting part 110 are provided with fixing rods 620 suitable for mounting the walking clamping part.

[0046] In one possible implementation, lighting lamps 121 are provided at both ends of the equipment rack 100 to provide good lighting for nighttime operations. Specifically, the two lighting lamps 121 are respectively positioned in the middle of the end cover 120. Furthermore, the lighting lamps 121 are LED lamps (semiconductor materials emit light, resulting in low energy consumption, long lifespan, and high luminous efficiency).

[0047] In one possible implementation, such as Figure 8 As shown, the traveling clamping part includes: a fixed rod 620, two clamping rods 600, and a spring 610; the fixed rod 620 is disposed inside the cavity of the equipment frame 100; one end of each of the two clamping rods 600 is rotatably connected to the fixed rod 620; the other end of each of the two clamping rods 600 is provided with a traveling wheel 300; and the spring 610 is disposed between the two clamping rods 600 to apply tension to the two clamping rods 600. It should be noted here that... Figure 6 As shown, the main body of the clamping rod 600 is rod-shaped. Each of the two clamping rods 600 has a sleeve 630 at its top, which is suitable for fitting around the outside of the fixed rod 620. The bottom end of the clamping rod 600 is connected to a traveling wheel 300. The two clamping rods 600 are positioned opposite each other and fixedly connected by a spring 610. Under the action of the spring 610, the two clamping rods 600 can be pulled closer together, thereby adjusting the fit between the traveling wheel 300 and the rail 1000. When the traveling wheels 300 of the two clamping rods 600 are placed on both sides of the rail 1000, the spring 610 applies tension to the two traveling wheels 300, firmly clamping the rail 1000.

[0048] It should be noted that the two traveling clamping parts have the same structure. With the support of the two traveling clamping parts on the front and rear of the equipment frame 100, the equipment frame 100 can be placed stably on the rail 1000, so that the equipment frame 100 can move smoothly along the length of the rail 1000; and the detection accuracy of the ultrasonic detector 500 can be ensured during the detection process.

[0049] In one possible implementation, ten ultrasonic detectors 500 are arranged sequentially along the length of the mounting plate 400. It should be noted that these ten tandem ultrasonic detectors 500 are positioned at the bottom of the scanning frame. During the detection process, the probes of these ultrasonic detectors 500 can be in contact with the rail head surface of the rail 1000 to perform K-type scanning and reflection detection.

[0050] Preferably, the distance between any two adjacent ultrasonic detectors 500 is 2 cm.

[0051] In one possible implementation, the bottom of the mounting plate 400 is detachably equipped with a travel limiter to limit the movement of the device, ensuring that the ultrasonic detector 500 remains centered on the rail surface of the rail 1000 during flaw detection operations, thus preventing the equipment frame 100 from deviating or swaying. Furthermore, the travel limiter is located on the bottom surface of the mounting plate 400 and at its end.

[0052] In one possible implementation, such as Figure 4As shown, the travel limiting part includes: two oppositely arranged auxiliary wheels 910 and an auxiliary plate 900. The top of the auxiliary plate 900 is detachably connected to the bottom surface of the mounting plate 400, and two auxiliary wheel mounting shafts are vertically arranged at the bottom of the auxiliary plate 900. The two auxiliary wheels 910 are respectively sleeved on the two auxiliary wheel mounting shafts and can rotate on the auxiliary wheel mounting shafts. The distance between the two auxiliary wheels 910 is greater than the width of the rail 1000. It should be noted that since the distance between the two auxiliary wheels 910 is fixed, it cannot perfectly adapt to various models of rail 1000. Therefore, the travel limiting part is limited to the rail 1000 specification model most suitable for testing in this application. When testing other specifications of rail 1000 where the width is greater than the distance between the two auxiliary wheels 910, the travel limiting part can be completely disassembled to avoid interference. Preferably, the auxiliary plate 900 of the travel limiting part can be detachably connected to the mounting plate 400 by bolts.

[0053] The detection principle of the ultrasonic detector 500 is explained as follows: The piezoelectric material in the ultrasonic detector 500 vibrates under the excitation of an electrical signal, thereby generating ultrasonic waves. These ultrasonic waves are emitted into the interior of the rail weld at a certain frequency and energy. The ultrasonic waves propagate within the material, and when they encounter interfaces within the material (such as interfaces with different material densities), some of the sound waves are reflected back, forming echoes. After the probe receives these echoes, the piezoelectric material converts the sound wave vibrations into electrical signals. These electrical signals are amplified and processed, and finally an image is formed on the display.

[0054] The detected values ​​typically characterize the intensity, time delay, and frequency variation of the reflected ultrasonic waves, used to determine the state of the material's internal structure, such as the presence and location of defects like cracks and voids. According to national standards, weld quality is classified into three grades, and ultrasonic testing is generally used to detect internal defects. The standard for judging weld quality is based on GB50205-2001, classifying weld quality into Grade I, Grade II, and Grade III. By analyzing the values ​​detected by the ultrasonic flaw detector 500, such as the intensity and location of the reflected waves, the quality of the weld can be determined. If the reflected wave intensity is high and the location is fixed, it may indicate a large internal defect and poor weld quality; if the reflected wave intensity is low or there is no obvious reflection, it indicates good weld quality.

[0055] This application effectively solves the problems of low efficiency, complex operation, and insufficient accuracy in traditional flaw detection methods. It simultaneously improves detection efficiency and accuracy, can detect different rail types, and can be quickly adjusted to adapt to different working environments and rail conditions. It simplifies the operation process, reduces the physical burden on operators, lowers maintenance costs, enhances operational flexibility, and can operate normally in harsh environments, providing strong support for the safety and maintenance efficiency of rail transit systems.

[0056] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A handheld ultrasonic flaw detection device, characterized in that, include: Equipment frame, mounting plate, adjusting rod, two traveling clamps and two or more ultrasonic detectors; The bottom of the equipment rack has an open structure, and the mounting plate is disposed at the bottom opening of the equipment rack; Two or more ultrasonic detectors are arranged sequentially on the bottom surface of the mounting plate, with the detection ends of both ultrasonic detectors facing downwards and protruding from the equipment frame, suitable for contacting the steel rail located under the equipment frame; The two traveling clamping parts are respectively disposed at both ends of the equipment frame; each traveling clamping part is provided with two traveling wheels, and the two traveling wheels can move in a direction toward or away from each other; the two traveling wheels are suitable for placement on both sides of the rail web; The adjusting rod includes a fixed cylinder and a telescopic rod; the fixed cylinder is installed on the top surface of the equipment frame; the telescopic rod is movably disposed inside the fixed cylinder and can move along the length of the fixed cylinder; a handle is provided on the side wall of the telescopic rod.

2. The handheld ultrasonic flaw detector according to claim 1, characterized in that, The fixed cylinder is connected to the telescopic rod by a fixing pin.

3. The handheld ultrasonic flaw detector according to claim 2, characterized in that, The side wall of the fixed cylinder is provided with a fixing hole; The telescopic rod has two or more adjustment holes on its side wall, and the two or more adjustment holes are arranged sequentially along the length of the telescopic rod. The fixing pin is adapted to be inserted sequentially into the fixing hole and the telescopic rod to fix the telescopic rod inside the fixing cylinder.

4. The handheld ultrasonic flaw detector according to claim 1, characterized in that, Lighting is provided at both ends of the equipment rack.

5. The handheld ultrasonic flaw detector according to claim 1, characterized in that, The walking clamping part includes: a fixed rod, two clamping rods and a spring; the fixed rod is disposed inside the cavity of the equipment frame, one end of the two clamping rods is rotatably connected to the fixed rod, the other end of the two clamping rods is respectively provided with a walking wheel, and the spring is disposed between the two clamping rods to apply tension to the two clamping rods.

6. The handheld ultrasonic flaw detector according to claim 1, characterized in that, The ultrasonic detector is provided in ten units, which are arranged sequentially along the length of the mounting plate.

7. The handheld ultrasonic flaw detector according to claim 1, characterized in that, Also includes: The bottom of the mounting plate is provided with a walking limit part.

8. The handheld ultrasonic flaw detector according to claim 7, characterized in that, The travel limiting part includes: two auxiliary wheels arranged opposite each other; suitable for contacting the two sides of the rail head of the rail respectively.

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