An array eddy current sensor

Abstract

This utility model relates to the field of weld flaw detection technology and provides an array eddy current sensor, including a probe assembly with two symmetrical protective components hinged to it. The probe assembly includes a probe element and two slidingly fitted moving parts on the probe element. This device solves the technical problem that the flexible detection part of existing eddy current flaw detector probes often lacks certain protective devices, resulting in the inability to cover and protect the flexible detection part when not in use. This leads to the flexible detection part being easily damaged by impacts when not in use, thus affecting the subsequent detection process. The device achieves the technical effect of covering and protecting the flexible detection part of the flexible probe body by having the two protective components close together to form a relatively sealed cover, thereby preventing damage to the flexible detection part of the flexible probe body when not in use.

Description

Technical Field

[0001] This utility model relates to the field of weld flaw detection technology, and more specifically, it relates to an array eddy current sensor. Background Technology

[0002] As a crucial running gear component of a locomotive, the quality and performance of the bogie directly impact the comfort and reliability of the train. The bogie frame, serving as the bogie's skeleton, plays a vital role. The bogie, constructed from welded steel, suffers from low fatigue strength, making it a weak point in load-bearing capacity. Furthermore, welded steel structures are prone to defects such as slag inclusions, incomplete penetration, and irregular weld seams after welding. During use, fatigue cracks are easily developed in the weld area. Therefore, after welding the steel of the bogie, it is necessary to inspect it using the eddy current detector probe (eddy current sensor) in the TZ-EA type pulsed eddy current array flaw detector.

[0003] Currently, the eddy current detector probes in the TZ-EA type pulse eddy current array flaw detectors on the market often have the following technical problems when used:

[0004] The flexible detection part of the existing eddy current flaw detector probes often lacks certain protective devices, which means that the flexible detection part cannot be covered and protected when not in use. As a result, the flexible detection part is prone to damage from bumps and knocks when not in use, which in turn affects the subsequent detection process. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an array eddy current sensor that can be covered by two protective components to form a relatively sealed cover, thereby protecting the flexible detection part of the flexible probe body and preventing damage to the flexible detection part of the flexible probe body when it is not in use, thus preventing it from affecting the subsequent detection process.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An array eddy current sensor includes a probe assembly with two symmetrical protective components hinged to it. The probe assembly includes a probe element and two slidingly fitted moving parts on the probe element. The probe element includes a flexible probe body with inclined plates fixed to opposite sides. Hinges are fixed to opposite sides of the inclined plates. Two symmetrical vertical plates are fixed to the bottom plate of the inclined plates. L-shaped rotating plates are hinged to the interior of each of the two hinges. An arc panel is fixed to the top of the L-shaped rotating plate. An elastic spring is fixed between the bottom of the L-shaped rotating plate and the side of the vertical plate. Rotation holes for rotating with the protective components are opened on opposite sides of the inclined plates.

[0008] The present invention is further configured such that: the protective component includes two rotating shafts respectively rotatably fitted inside two rotating holes, each of the opposite ends of the rotating shafts having an extension plate, and a protective shell is fixed between the two extension plates.

[0009] The present invention is further configured such that: the input end of the flexible probe body is electrically connected to a data cable; guide grooves are provided on both opposite sides of the flexible probe body, and side plates are fixed inside both guide grooves.

[0010] The present invention is further configured such that: a threaded screw is rotatably fitted through both side plates, and a fitting circular plate is fixed at the end of the threaded screw and fits against one side of the side plate; and a fitting ring is fixed on the circumferential side of the threaded screw and fits against the opposite side of the side plate.

[0011] The present invention is further configured such that: the moving part includes a guide rail that slides inside the guide groove, and the side of the guide rail has a threaded hole that is threaded to a threaded screw.

[0012] The present invention is further configured such that: a movable plate is fixed to the side of the guide rail, an L-shaped displacement plate is fixed to the side of the movable plate, and two symmetrical plug-in rods are fixed to the bottom of the L-shaped displacement plate;

[0013] The protective shell has two symmetrical insertion holes on its side, which are used to insert and engage with the insertion rod.

[0014] The advantages of this utility model are: 1. By flipping the two protective components outward, the two protective components are closed to form a relatively sealed cover, thereby covering and protecting the flexible detection part of the flexible probe body, preventing damage to the flexible detection part of the flexible probe body when it is not in use, and preventing it from affecting the subsequent detection process.

[0015] 2. This utility model uses an L-shaped displacement plate fixed to the side of the movable plate and two plug-in rods fixed to the bottom of the L-shaped displacement plate to be inserted into the two plug-in holes. This is used to position and fix the two protective shells for rotating and closing protection, preventing the protective shells that protect the flexible probe body from shaking later, which would affect the later protection effect of the flexible probe body. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an array eddy current sensor according to the present invention.

[0017] Figure 2 This is a schematic diagram of the probe assembly of this utility model.

[0018] Figure 3This is a schematic diagram of the structure of the protective component of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the probe component of this utility model.

[0020] Figure 5 This is a side view of the probe component of this utility model.

[0021] Figure 6 This is a schematic diagram of the structure of the movable component of this utility model.

[0022] In the diagram: 1. Probe assembly; 2. Protective assembly; 3. Probe component; 4. Moving component; 201. Rotating shaft; 202. Extension plate; 203. Protective shell; 204. Insertion hole; 301. Flexible probe body; 302. Inclined plate; 303. Hinge seat; 304. Vertical plate; 305. L-shaped rotating plate; 306. Arc panel; 307. Elastic spring; 308. Rotation hole; 309. Data cable; 310. Guide groove; 311. Side plate; 312. Threaded screw; 313. Fitting round plate; 314. Fitting ring; 401. Guide rail; 402. Threaded hole; 403. Moving plate; 404. L-shaped displacement plate; 405. Insertion rod. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0025] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0026] Example 1, please refer to Figure 1-6The present invention provides the following technical solution: Specifically, it refers to an array eddy current sensor, including a probe assembly 1, on which two symmetrical protective components 2 are hinged and fitted. The probe assembly 1 includes a probe element 3 and two movable parts 4 that are slidably fitted on the probe element 3. The probe element 3 includes a flexible probe body 301, on which inclined plates 302 are fixed on opposite sides. On opposite sides of the inclined plates 302, hinge seats 303 are fixed. On the bottom plate of the inclined plates 302, two symmetrical vertical plates 304 are fixed. On the inside of the two hinge seats 303, L-shaped rotating plates 305 are hinged and fitted. On the top of the L-shaped rotating plates 305, an arc panel 306 is fixed. On the bottom of the L-shaped rotating plates 305, an elastic spring 307 is fixed between the bottom of the L-shaped rotating plates 305 and the side of the vertical plates 304. On opposite sides of the inclined plates 302, there are rotating holes 308 that rotate and fit with the protective components 2.

[0027] Furthermore, the protective component 2 includes two rotating shafts 201 that are rotatably fitted inside two rotating holes 308 respectively. Each of the opposite ends of the rotating shafts 201 has an extension plate 202, and a protective shell 203 is fixed between the two extension plates 202.

[0028] The specific application of this embodiment is as follows: When the flexible probe body 301 is in use, by flipping and rotating the protective components 2 on opposite sides of the inclined plate 302, the two protective components 2 simultaneously approach the curved surface of the arc panel 306, thereby compressing the elastic spring 307 fixedly connected between the L-shaped rotating plate 305 and the vertical plate 304. This causes the L-shaped rotating plate 305 to hinge and rotate inside the hinge seat 303, thereby driving the L-shaped rotating plate 305 and the arc panel 306 to simultaneously hinge and rotate towards the side of the inclined plate 302. When the protective components 2 rotate and slide towards the arc panel 306... At the end of the curved surface of 06, the protective component 2 is continuously flipped and squeezed until the protective component 2 separates from the curved surface of the arc panel 306. The squeezed elastic spring 307 elastically resets, causing the L-shaped rotating plate 305 inside the hinge seat 303 to rotate in the opposite direction until the bottom of the arc panel 306 fixed to the top of the L-shaped rotating plate 305 is in contact with the protective component 2. This is to position and fix the two protective components 2 that rotate and cooperate on opposite sides of the flexible probe body 301 during the flaw detection process, so as to avoid affecting the subsequent flaw detection process.

[0029] When the flexible probe body 301 is not in use, by flipping the arc panel 306 upward, the L-shaped rotating plate 305 and the arc panel 306 fixed to the top of the L-shaped rotating plate 305 are simultaneously flipped upward inside the hinge seat 303. This stretches the elastic spring 307 fixed between the L-shaped rotating plate 305 and the vertical plate 304, causing the L-shaped rotating plate 305 and the arc panel 306 fixed to the top of the L-shaped rotating plate 305 to gradually move away from the protective component 2 until the bottom of the arc panel 306 is completely separated from the protective component 2. Then, the two protective components 2 are flipped outward, so that the two protective components 2 close together to form a relatively sealed cover, thereby covering and protecting the flexible detection part of the flexible probe body 301, preventing damage to the flexible detection part of the flexible probe body 301 when it is not in use, and preventing it from affecting the subsequent detection process.

[0030] Example 2, please refer to Figure 1-6 This second embodiment is an improvement on the first embodiment as follows: Specifically, the input end of the flexible probe body 301 is electrically connected to a data cable 309; guide grooves 310 are provided on both opposite sides of the flexible probe body 301, and side plates 311 are fixed inside both guide grooves 310; threaded screws 312 are rotatably fitted through both side plates 311, and a fitting circular plate 313 that fits against one side of the side plate 311 is fixed at the end of the threaded screw 312; a fitting circular plate 313 that fits against the other side of the side plate 311 is fixed on the circumferential side of the threaded screw 312. The fitting ring 314 fits snugly; the moving part 4 includes a guide rail 401 that slides inside the guide groove 310, and a threaded hole 402 that is threadedly connected to the threaded screw 312 through the side of the guide rail 401; a moving plate 403 is fixed to the side of the guide rail 401, an L-shaped displacement plate 404 is fixed to the side of the moving plate 403, and two symmetrical plug-in rods 405 are fixed to the bottom of the L-shaped displacement plate 404; two symmetrical plug-in holes 204 are opened on the side of the protective shell 203, and the plug-in holes 204 are plugged into the plug-in rods 405.

[0031] A specific application of this embodiment is as follows: After the two protective components 2, which are rotatably fitted on opposite sides of the inclined plate 302, complete their mutual rotational contact, the protective shells 203 in the two protective components 2 are in a mutually contacting state, thereby providing a certain degree of cover protection for the flexible detection part of the flexible probe body 301. This ensures that when the flexible probe body 301 is not in use, the mutually cover-protecting protective shells 203 can provide a certain degree of protection for the flexible detection part of the flexible probe body 301, preventing it from being bumped or damaged, and preventing it from affecting the subsequent detection process. After the mutually cover-protecting protective shells 203 have completed their cover protection of the flexible probe body 301, by rotating the threaded screw 312, the guide rail 401 threadedly connected to the threaded screw 312 is driven to move threadedly, thereby allowing the guide rail 401 and the guide groove 310 to move threadedly. The sliding fit between the guide rails limits the circumferential rotation of the guide rail 401. During the rotation, the mutual contact between the fitting round plate 313 fixed at the end of the threaded screw 312 and one side of the side plate 311, and the mutual contact between the fitting ring 314 fixed on the circumferential side of the threaded screw 312 and the opposite side of the side plate 311, ensures that the threaded screw 312 can only rotate circumferentially on the side plate 311 and cannot move threadedly. As a result, the L-shaped displacement plate 404 fixed on the side of the moving plate 403 and the two plug-in rods 405 fixed at the bottom of the L-shaped displacement plate 404 are inserted into the two plug-in holes 204. This positions and fixes the two protective shells 203 that protect the rotating cover, preventing the protective shells 203 that protect the flexible probe body 301 from shaking later, which would affect the later protection effect of the flexible probe body 301.

[0032] During the subsequent flaw detection process, the data cable 309, electrically connected to the input terminal of the flexible probe body 301, is electrically plugged into the input terminal of the TZ-EA type pulse eddy current array flaw detector. This allows for the testing and verification of fatigue cracks in the bogie welds using the flexible probe body 301. (The flexible probe body 301 is actually the eddy current sensor in the TZ-EA type pulse eddy current array flaw detector, which typically consists of two main parts: a probe and a preamplifier. The probe detects the position or vibration of an object and sends these signals to the preamplifier, which amplifies and processes these signals, ultimately outputting an electrical signal proportional to the object's position or vibration. This output electrical signal, proportional to the object's position or vibration, is then transmitted to the TZ-EA type pulse eddy current array flaw detector via the data cable 309.) In the pulse eddy current array flaw detector, and finally displayed on the display device of the TZ-EA type pulse eddy current array flaw detector, the same preamplifier can be used with different probes to meet different measurement needs, so as to obtain reliable test results. The TZ-EA type pulse eddy current array flaw detector is easy to operate. The flexible probe body 301 used is made of soft material, which is convenient for flaw detection of non-planar parts such as bogie welds. There is no need to remove paint during flaw detection. The flexible probe body 301 can directly perform Z-shaped scanning on the weld. The scanning process produces clear images, the test results are intuitive and identifiable, and the test data can be stored to achieve data management (the TZ-EA type pulse eddy current array flaw detector is existing technology and is not shown in the figure, so it will not be elaborated on here).

[0033] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0037] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An arrayed eddy current sensor, comprising a probe assembly (1), characterized in that: The probe assembly (1) is hinged with two symmetrical protective components (2), and the probe assembly (1) includes a probe component (3) and two sliding components (4) that are slidably fitted on the probe component (3); The probe component (3) includes a flexible probe body (301), on which inclined plates (302) are fixed on opposite sides. On opposite sides of the inclined plates (302), hinge seats (303) are fixed. On the bottom plate of the inclined plates (302), two symmetrical vertical plates (304) are fixed. An L-shaped rotating plate (305) is hinged inside each of the two hinge seats (303). An arc panel (306) is fixed to the top of the L-shaped rotating plate (305). An elastic spring (307) is fixed between the bottom of the L-shaped rotating plate (305) and the side of the vertical plate (304). Rotation holes (308) that rotate with the protective component (2) are opened on opposite sides of the inclined plates (302).

2. The array eddy current sensor according to claim 1, characterized in that: The protective component (2) includes two rotating shafts (201) that are rotatably fitted inside two rotating holes (308), and each of the two opposite ends of the rotating shafts (201) has an extension plate (202), and a protective shell (203) is fixed between the two extension plates (202).

3. An array eddy current sensor according to claim 2, characterized in that: The input end of the flexible probe body (301) is electrically connected to a data cable (309).

4. An array eddy current sensor according to claim 3, characterized in that: The flexible probe body (301) has guide grooves (310) on both opposite sides, and side plates (311) are fixed inside both guide grooves (310).

5. An array eddy current sensor according to claim 4, characterized in that: Both side plates (311) are rotatably fitted with threaded screws (312). The end of the threaded screw (312) is fixed with a fitting circular plate (313) that fits against one side of the side plate (311). The circumferential side of the threaded screw (312) is fixed with a fitting ring (314) that fits against the opposite side of the side plate (311).

6. An array eddy current sensor according to claim 5, characterized in that: The moving part (4) includes a guide rail (401) that slides inside the guide groove (310), and the guide rail (401) has a threaded hole (402) that is threaded to the threaded screw (312) through its side.

7. An array eddy current sensor according to claim 6, characterized in that: A movable plate (403) is fixed to the side of the guide rail (401), an L-shaped displacement plate (404) is fixed to the side of the movable plate (403), and two symmetrical plug rods (405) are fixed to the bottom of the L-shaped displacement plate (404). The protective shell (203) has two symmetrical insertion holes (204) on its side, and the insertion holes (204) are engaged with the insertion rod (405).

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