A probe-adjustable magnetic particle flaw detector

Abstract

The utility model discloses a kind of magnetic particle flaw detector of probe adjustable, is related to magnetic particle flaw detector technical field.The utility model includes flaw detector main part and two flaw detection heads, the inside sliding connection of flaw detector main part has collecting box, the front side of collecting box extends to the outside of flaw detector main body, the top of flaw detector main body is fixedly connected with perforated plate, further include: adjusting part, the adjusting part is installed in the top of flaw detector main body, the adjusting part is used to adjust the relative position between two flaw detection heads.The utility model passes through adjusting part, specifically when the distance between two flaw detection heads needs to be adjusted, start motor drives screw rod to rotate, make internal thread block slide in U-shaped frame limit sliding groove, be driven mounting seat relative movement by sliding block, connecting plate, under the limit of limit guide rail and limit sliding block Stable adjustment is carried out, to realize the quick accurate adjustment of the relative position between two flaw detection heads, and then adapt to different size workpieces, improve detection efficiency.

Description

Technical Field

[0001] This utility model belongs to the technical field of magnetic particle flaw detectors, and in particular relates to a magnetic particle flaw detector with an adjustable probe. Background Technology

[0002] Magnetic particle inspection machines utilize the fact that when ferromagnetic materials are magnetized, the magnetic field lines on and near the surface of the workpiece are locally distorted, generating a leakage magnetic field that attracts magnetic powder applied to the workpiece surface, forming a visible magnetic mark that reveals discontinuous defects. In the inspection process, the probe plays a crucial role, as it generates a magnetic field to magnetize the workpiece for subsequent magnetic particle inspection of defects.

[0003] Currently, there are many magnetic particle inspection machines on the market equipped with two probes. Compared with single-probe equipment, they can magnetize workpieces from different angles, improving the accuracy and comprehensiveness of flaw detection. However, in existing dual-probe magnetic particle inspection machines, the two probes are usually fixedly mounted on the equipment. This makes it difficult to flexibly adjust the relative position between the two probes according to the different shapes and sizes of workpieces during actual flaw detection operations. As a result, when inspecting large workpieces, the fixed-distance probes cannot cover the entire workpiece, causing some areas to be missed. For small precision workpieces, the probe spacing is too large, making it impossible to accurately locate tiny defects. In addition, frequently changing flaw detectors of different specifications to adapt to workpiece sizes not only significantly increases the company's equipment procurement costs but also reduces the efficiency of flaw detection operations and affects production progress. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetic particle flaw detector with adjustable probes. Specifically, when the distance between the two flaw detectors needs to be adjusted, the motor is started, driving the threaded rod to rotate. This causes the internal threaded block to slide within the U-shaped frame's limiting groove. The sliding block and connecting plate then drive the mounting base to move relative to the probes. Under the limiting of the limiting guide rail and the limiting slider, the adjustment is smooth, achieving rapid and precise adjustment of the relative position between the two flaw detectors. This allows for adaptation to workpieces of different sizes, improves inspection efficiency, and solves the problem of difficulty in flexibly adjusting the relative position between the two probes according to workpieces of different shapes and sizes during actual flaw detection operations.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a magnetic particle flaw detector with an adjustable probe, comprising a flaw detector body and two flaw detector heads. A collection box is slidably connected inside the flaw detector body, and the front side of the collection box extends to the outside of the flaw detector body. A perforated plate is fixedly connected to the top of the flaw detector body. The model also includes:

[0007] An adjustment unit, mounted on the top of the flaw detector body, is used to adjust the relative position between two flaw detector heads; and

[0008] The mounting section is provided in two sets, and the two sets of mounting sections are respectively installed on the top of the flaw detector body. The two sets of mounting sections are respectively used for quick installation of two flaw detector heads.

[0009] The two sets of mounting sections are mirror images of each other with the front and rear center lines of the flaw detector body as the axis.

[0010] Furthermore, the adjustment unit includes a drive assembly mounted on top of the flaw detector body, the drive assembly providing power for adjusting the relative position between the two flaw detector heads; and

[0011] A transmission assembly, which is mounted at the bottom of the drive assembly, is used to transmit power from the drive assembly to the two flaw detector heads.

[0012] A limiting component is installed at the bottom of the drive component and is used to limit the transmission component.

[0013] The two flaw detectors are mounted on their respective transmission components via mounting parts. Therefore, the movement of the transmission components drives the two flaw detectors to move, thereby adjusting the distance between the two flaw detectors.

[0014] Furthermore, the mounting part includes a mounting assembly mounted outside the transmission assembly, the transmission assembly being used to connect the transmission assembly to a corresponding flaw detector head; and

[0015] A fixing component is installed inside the transmission component and is used to quickly fix the flaw detector head;

[0016] The mounting and fixing components work together to secure the flaw detector head via a snap-fit ​​mechanism, allowing for quick disassembly and installation of the flaw detector head.

[0017] Furthermore, the drive assembly includes a U-shaped frame fixedly connected to the top of the flaw detector body. A motor is mounted on the top of the U-shaped frame, and a threaded rod is fixedly connected to the output shaft of the motor via a coupling. A support plate is fixedly connected to the top of the U-shaped frame. The threaded rod is rotatably connected to the support plate at the top of the U-shaped frame. An internal threaded block is threadedly connected to the outer wall of the threaded rod. A limiting groove is provided at the top of the U-shaped frame. The bottom of the internal threaded block penetrates the top of the U-shaped frame and is slidably connected to the limiting groove at the top of the U-shaped frame.

[0018] The threaded rod is rotatably connected to the support plate at the top of the U-shaped frame via a bearing, and the support plate is fixedly connected to the U-shaped frame by welding.

[0019] Furthermore, the transmission assembly includes a slider fixedly connected to the bottom of the internal thread block, and two connecting plates are rotatably connected to the bottom of the slider. Each of the two connecting plates is hinged to a mounting base on the side away from the slider.

[0020] The top of the slider is slidably connected to the inner top wall of the U-shaped frame.

[0021] Furthermore, the limiting component includes two limiting guide rails installed on the inner top wall of the U-shaped frame, and two limiting sliders are slidably connected to the inner walls of the two limiting guide rails, with two mounting seats respectively fixedly connected to the corresponding limiting sliders;

[0022] There are four limit sliders in total, and two mounting bases are fixedly connected to the corresponding two limit sliders.

[0023] Furthermore, the mounting assembly includes an L-shaped plate fixedly connected to the outer wall of the flaw detector head. A mounting plate is fixedly connected to the side of the L-shaped plate near the mounting base. A mounting groove is formed on the side of the mounting base near the L-shaped plate. The side of the mounting plate away from the L-shaped plate extends into the interior of the mounting groove and is slidably connected to the mounting groove. A plurality of support rods are fixedly connected to the side of the L-shaped plate near the mounting base. The ends of the plurality of support rods away from the L-shaped plate extend into the interior of the mounting base and are slidably connected to the mounting base.

[0024] The side of the mounting plate furthest from the L-shaped plate is designed to be arc-shaped.

[0025] Furthermore, the fixing component includes two sliding grooves formed inside the mounting base, each of the two sliding grooves being slidably connected to a limiting piece, and springs being fixedly connected between the inner walls of the two sliding grooves on the opposite sides and the corresponding limiting pieces, and limiting blocks being fixedly connected to the sides of the two limiting pieces on the sides that are close to each other.

[0026] The semi-circular shapes of the two limiting blocks, which are close to each other, are adapted to the semi-circular grooves opened on the front and rear sides of the mounting plate, respectively.

[0027] This utility model has the following beneficial effects:

[0028] 1. By setting up an adjustment section, specifically when it is necessary to adjust the distance between the two flaw detectors, the motor is started to drive the threaded rod to rotate, causing the internal threaded block to slide in the U-shaped frame limit groove. Through the slider and connecting plate, the mounting base moves relative to the slider. Under the limit of the limit guide rail and the limit slider, the adjustment is smooth, thereby realizing the rapid and accurate adjustment of the relative position between the two flaw detectors, thus adapting to workpieces of different sizes and improving the inspection efficiency.

[0029] 2. By setting up an installation section, specifically when installing the flaw detector head, the mounting plate on the L-shaped plate is inserted into the mounting slot of the mounting base, and the support rod slides into the corresponding slot simultaneously. The mounting plate presses against the limiting block, causing the limiting piece to compress the spring. After reaching the correct position, the spring returns to its original position and stretches, pushing the limiting block into the groove for fixation through the limiting piece. Disassembly can be performed by pulling the L-shaped plate, thus achieving quick installation and removal of the flaw detector head. This facilitates the replacement of different types of flaw detector heads, meets diverse testing needs, reduces equipment downtime when changing flaw detector heads, and improves testing efficiency.

[0030] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0033] Figure 2 This is a schematic diagram of the U-shaped frame of this utility model;

[0034] Figure 3 This is a schematic diagram of the connecting plate of this utility model;

[0035] Figure 4 This is a schematic diagram of the structure of the motor of this utility model;

[0036] Figure 5 This is a schematic diagram of the structure of the L-shaped plate of this utility model;

[0037] Figure 6 This is a cross-sectional structural diagram of the mounting base of this utility model.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1. Flaw detector body; 11. Flaw detector head; 2. Adjustment unit; 21. Drive assembly; 211. U-shaped frame; 212. Motor; 213. Threaded rod; 214. Internal threaded block; 22. Transmission assembly; 221. Slider; 222. Connecting plate; 223. Mounting base; 23. Limiting assembly; 231. Limiting guide rail; 232. Limiting slider; 3. Mounting unit; 31. Mounting assembly; 311. L-shaped plate; 312. Mounting plate; 313. Mounting groove; 314. Support rod; 32. Fixing assembly; 321. Slide groove; 322. Limiting piece; 323. Spring; 324. Limiting block. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] Please see Figure 1-6 As shown, this utility model is a magnetic particle flaw detector with an adjustable probe, including a flaw detector body 1 and two flaw detector heads 11. A collection box is slidably connected inside the flaw detector body 1, and the front side of the collection box extends to the outside of the flaw detector body 1. A perforated plate is fixedly connected to the top of the flaw detector body 1. It also includes:

[0042] Adjustment unit 2, installed on top of the flaw detector body 1, is used to adjust the relative position between the two flaw detector heads 11; and

[0043] Mounting part 3, there are two sets of mounting parts 3, which are respectively installed on the top of the flaw detector body 1. The two sets of mounting parts 3 are used to quickly install the two flaw detector heads 11.

[0044] Among them, the two sets of mounting parts 3 are mirror images of the front and rear center lines of the flaw detector body 1.

[0045] The adjustment unit 2 includes a drive assembly 21, which is mounted on the top of the flaw detector body 1. The drive assembly 21 provides power for adjusting the relative position between the two flaw detector heads 11; and

[0046] Transmission assembly 22 is mounted at the bottom of drive assembly 21 and is used to transmit power from drive assembly 21 to two flaw detector heads 11.

[0047] Limiting component 23 is installed at the bottom of drive component 21 and is used to limit the transmission component 22.

[0048] The two flaw detectors 11 are respectively mounted on the corresponding transmission components 22 via the mounting part 3. Therefore, the movement of the transmission components 22 drives the two flaw detectors 11 to move, thereby adjusting the distance between the two flaw detectors 11.

[0049] The mounting section 3 includes a mounting assembly 31, which is mounted on the outside of the transmission assembly 22. The transmission assembly 22 is used to connect the transmission assembly 22 to the corresponding flaw detector head 11; and

[0050] The fixing component 32 is installed inside the transmission component 22 and is used to quickly fix the flaw detector head 11.

[0051] The mounting component 31 and the fixing component 32 work together to fix the flaw detector head 11 by snapping together, so that the flaw detector head 11 can be quickly disassembled and installed.

[0052] The drive assembly 21 includes a U-shaped frame 211 fixedly connected to the top of the flaw detector body 1. A motor 212 is mounted on the top of the U-shaped frame 211. The output shaft of the motor 212 is fixedly connected to a threaded rod 213 via a coupling. A support plate is fixedly connected to the top of the U-shaped frame 211. The threaded rod 213 is rotatably connected to the support plate on the top of the U-shaped frame 211. An internal threaded block 214 is threadedly connected to the outer wall of the threaded rod 213. A limiting groove is opened on the top of the U-shaped frame 211. The bottom of the internal threaded block 214 passes through the top of the U-shaped frame 211 and is slidably connected to the limiting groove opened on the top of the U-shaped frame 211.

[0053] The internal thread block 214 is adapted to the limiting groove opened on the top of the U-shaped frame 211.

[0054] The transmission assembly 22 includes a slider 221 fixedly connected to the bottom of the internal thread block 214. Two connecting plates 222 are rotatably connected to the bottom of the slider 221. Mounting seats 223 are hinged to the side of the two connecting plates 222 away from the slider 221.

[0055] The two flaw detector heads 11 are connected to their respective mounting bases 223 via the mounting part 3.

[0056] The limiting component 23 includes two limiting guide rails 231 installed on the inner top wall of the U-shaped frame 211. The inner walls of the two limiting guide rails 231 are slidably connected to two limiting sliders 232. The two mounting seats 223 are respectively fixedly connected to the corresponding limiting sliders 232.

[0057] Both limit guide rails 231 are connected to the U-shaped frame 211 by bolts.

[0058] Mounting assembly 31 includes an L-shaped plate 311 fixedly connected to the outer wall of the flaw detector head 11. A mounting plate 312 is fixedly connected to the side of the L-shaped plate 311 near the mounting base 223. A mounting groove 313 is provided on the side of the mounting base 223 near the L-shaped plate 311. The side of the mounting plate 312 away from the L-shaped plate 311 extends into the interior of the mounting groove 313 and is slidably connected to the mounting groove 313. A plurality of support rods 314 are fixedly connected to the side of the L-shaped plate 311 near the mounting base 223. The ends of the plurality of support rods 314 away from the L-shaped plate 311 all extend into the interior of the mounting base 223 and are slidably connected to the mounting base 223.

[0059] The mounting groove 313 is adapted to the mounting plate 312, and four support rods 314 are provided. The mounting base 223 is provided with sliding grooves that are adapted to the four support rods 314 respectively.

[0060] The fixing component 32 includes two slide grooves 321 formed inside the mounting base 223. Each slide groove 321 is slidably connected to a limiting piece 322. A spring 323 is fixedly connected between the inner wall of the two slide grooves 321 on the side away from each other and the corresponding limiting piece 322. A limiting block 324 is fixedly connected to the side of the two limiting pieces 322 on the side close to each other.

[0061] Among them, the two limit blocks 324 are respectively adapted to the corresponding slides 321.

[0062] A specific application of this embodiment is as follows: When the distance between the two flaw detector heads 11 needs to be adjusted using this device, the motor 212 is started, and its output shaft drives the threaded rod 213 to rotate. The threaded rod 213 is threadedly engaged with the internal threaded block 214, causing the internal threaded block 214 to slide in the limiting groove at the top of the U-shaped frame 211. The internal threaded block 214 drives the bottom slider 221 to move. The slider 221 is connected to the connecting plate 222 through rotation, causing the two mounting seats 223 to move relative to each other. At the same time, the mounting seats 223 are fixedly connected to the limiting slider 232. Under the limiting action of the limiting guide rail 231, they maintain smooth sliding, thereby realizing the adjustment of the distance between the two flaw detector heads 11.

[0063] During installation of the flaw detector head 11, the mounting plate 312 on the L-shaped plate 311 on the outer wall of the flaw detector head 11 is aligned with the mounting groove 313 of the mounting base 223 and inserted. At the same time, the support rod 314 also slides into the corresponding sliding groove of the mounting base 223. During the insertion process, the mounting plate 312 presses against the limiting block 324, causing the limiting piece 322 to compress the spring 323 and slide into the sliding groove 321. When the mounting plate 312 is fully inserted and its semi-circular groove is aligned with the limiting block 324, the spring 323 returns to its original position, pushing the limiting block 324 into the semi-circular groove, thereby firmly fixing the flaw detector head 11 onto the mounting base 223. The support force of the L-shaped plate 311 is increased by the support rod 314. When disassembling the flaw detector head 11, simply pull the mounting plate 312 outward through the L-shaped plate 311 to disengage it from the mounting groove 313, and the flaw detector head 11 can be easily removed. When inspecting the workpiece, place the workpiece on the perforated plate and spray or impregnate the workpiece surface with magnetic powder suspension. Excess magnetic powder suspension will fall into the collection box through the holes in the perforated plate for collection, reducing resource waste. Then, the flaw detector head 11 generates a magnetic field after being powered on, and uses electromagnetic induction to generate an eddy current magnetic field in the workpiece to perform flaw detection on the workpiece.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. 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 any suitable manner in one or more embodiments or examples.

[0065] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A magnetic particle flaw detector with adjustable probe, comprising a flaw detector body (1) and two flaw detector heads (11), wherein a collection box is slidably connected inside the flaw detector body (1), the front side of the collection box extends to the outside of the flaw detector body (1), and a perforated plate is fixedly connected to the top of the flaw detector body (1), characterized in that, Also includes: An adjustment unit (2) is installed on the top of the flaw detector body (1) and is used to adjust the relative position between the two flaw detector heads (11); and The mounting part (3) is provided in two sets. The two sets of mounting parts (3) are respectively installed on the top of the flaw detector body (1). The two sets of mounting parts (3) are respectively used to quickly install the two flaw detector heads (11). Among them, the two sets of installation parts (3) are mirror images of the front and rear center lines of the flaw detector body (1).

2. The magnetic particle flaw detector with an adjustable probe according to claim 1, characterized in that, The adjustment unit (2) includes a drive assembly (21) mounted on top of the flaw detector body (1), the drive assembly (21) providing power for adjusting the relative position between the two flaw detector heads (11); and A transmission assembly (22) is mounted at the bottom of a drive assembly (21) and is used to transmit power from the drive assembly (21) to two flaw detectors (11). A limiting component (23) is installed at the bottom of the drive component (21) and is used to limit the transmission component (22); The two flaw detectors (11) are respectively mounted on the corresponding transmission components (22) via the mounting part (3). Therefore, the movement of the transmission components (22) drives the two flaw detectors (11) to move, thereby adjusting the distance between the two flaw detectors (11).

3. A magnetic particle flaw detector with an adjustable probe according to claim 2, characterized in that, The mounting part (3) includes a mounting assembly (31) mounted on the outside of the transmission assembly (22), the transmission assembly (22) being used to connect the transmission assembly (22) to the corresponding flaw detector head (11); and A fixing component (32) is installed inside the transmission component (22) and is used to quickly fix the flaw detector head (11); The mounting component (31) and the fixing component (32) work together to fix the flaw detector head (11) by snapping together, so that the flaw detector head (11) can be quickly disassembled and installed.

4. A magnetic particle flaw detector with an adjustable probe according to claim 3, characterized in that, The drive assembly (21) includes a U-shaped frame (211) fixedly connected to the top of the flaw detector body (1). A motor (212) is installed on the top of the U-shaped frame (211). The output shaft of the motor (212) is fixedly connected to a threaded rod (213) via a coupling. A support plate is fixedly connected to the top of the U-shaped frame (211). The threaded rod (213) is rotatably connected to the support plate at the top of the U-shaped frame (211). An internal threaded block (214) is threadedly connected to the outer wall of the threaded rod (213). A limit groove is opened at the top of the U-shaped frame (211). The bottom of the internal threaded block (214) penetrates the top of the U-shaped frame (211) and is slidably connected to the limit groove opened at the top of the U-shaped frame (211). The U-shaped frame (211) is fixedly connected to the flaw detector body (1) by welding, and the motor (212) is connected to the U-shaped frame (211) by bolts.

5. A magnetic particle flaw detector with an adjustable probe according to claim 4, characterized in that, The transmission assembly (22) includes a slider (221) fixedly connected to the bottom of the internal thread block (214). The bottom of the slider (221) is rotatably connected to two connecting plates (222). The two connecting plates (222) are hinged to a mounting base (223) on the side away from the slider (221). The top of the slider (221) is slidably connected to the inner top wall of the U-shaped frame (211).

6. A magnetic particle flaw detector with an adjustable probe according to claim 5, characterized in that, The limiting component (23) includes two limiting guide rails (231) installed on the inner top wall of the U-shaped frame (211). The inner walls of the two limiting guide rails (231) are slidably connected to two limiting sliders (232). The two mounting seats (223) are fixedly connected to the corresponding limiting sliders (232). There are four limit sliders (232), and two mounting bases (223) are fixedly connected to the corresponding two limit sliders (232).

7. A magnetic particle flaw detector with an adjustable probe according to claim 6, characterized in that, The mounting assembly (31) includes an L-shaped plate (311) fixedly connected to the outer wall of the flaw detector head (11). A mounting plate (312) is fixedly connected to the side of the L-shaped plate (311) near the mounting base (223). A mounting groove (313) is provided on the side of the mounting base (223) near the L-shaped plate (311). The side of the mounting plate (312) away from the L-shaped plate (311) extends into the interior of the mounting groove (313) and is slidably connected to the mounting groove (313). A plurality of support rods (314) are fixedly connected to the side of the L-shaped plate (311) near the mounting base (223). The ends of the plurality of support rods (314) away from the L-shaped plate (311) all extend into the interior of the mounting base (223) and are slidably connected to the mounting base (223). The mounting plate (312) has semi-circular grooves on its front and rear sides respectively.

8. A magnetic particle flaw detector with an adjustable probe according to claim 5, characterized in that, The fixing component (32) includes two slides (321) formed inside the mounting base (223). Each of the two slides (321) is slidably connected to a limiting piece (322). A spring (323) is fixedly connected between the inner wall of the two slides (321) on the side away from each other and the corresponding limiting piece (322). A limiting block (324) is fixedly connected to the side of the two limiting pieces (322) on the side close to each other. The two limiting blocks (324) are designed with a semi-circular shape on the side that is close to each other.

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