An electromagnetic pulse eddy current detection device for metal materials of power grid

Abstract

The present invention relates to the field of electromagnetic pulse eddy current detection technology, and in particular to an electromagnetic pulse eddy current detection device for metal materials of a power grid, comprising a power supply box and two vertical plates, wherein the front and rear ends of the power supply box are respectively fixedly connected to the left ends of the opposite surfaces of the two vertical plates, and the front surfaces of the two vertical plates are provided with a slide groove, the rear end of the slide groove at the rear end is a closed end, and the slide groove at the front end passes through the vertical plate at the front end, and the right surfaces of the two vertical plates are provided with a limiting mechanism. The present invention allows the moving rod to move left and right along the slide groove by holding the front end of the moving rod extending out of the slide groove, and the long plate is driven to move along the moving rod during the movement of the moving rod. At this time, the rotating plate and the horizontal plate are caused to move in opposite directions to each other through the tooth grooves and gears. When the horizontal plate is located between the two vertical plates for detection, the flattened rotating plate is located on the right side of the two vertical plates for placing and collecting the detection object, and the rotating plate and the horizontal plate are caused to alternately enter the area between the two vertical plates for detection by pulling the moving rod.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic pulse eddy current detection, and in particular to an electromagnetic pulse eddy current detection device for metal materials of a power grid. Background Art

[0002] The pulsed eddy current testing system is a special testing instrument used in the field of materials science. Pulsed eddy current is usually applied to the primary coil with a square wave of a certain duty cycle as the excitation signal. When the primary coil carrying the square wave electrical signal approaches the conductive material or test piece, transient eddy currents and regenerated magnetic fields are induced in the conductor. The size and attenuation of the instantaneous eddy current are related to the electromagnetic properties, geometry and coupling of the conductor. The eddy current regenerated magnetic field received by the secondary coil contains relevant information about the conductivity, magnetic permeability and shape and size of the object being tested, based on which the detection and evaluation of pulsed eddy currents can be realized;

[0003] For example, a Chinese patent discloses: a resonant eddy current detection method for surface cracks, publication number: CN100470245C, which expands the wide range of applications, especially a new type of means in the excitation method, giving eddy current detection a broader application prospect;

[0004] However, when using an electromagnetic pulse eddy current detection device to detect metal parts in power grid metal materials, it is necessary to first place the parts to be detected, then transport them into the detection area for detection, then take out the detected parts, and then re-place new parts to be detected. The detection time and the part placement and collection time are separated and not used at the same time, and the detection efficiency is low. Therefore, an electromagnetic pulse eddy current detection device for power grid metal materials is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide an electromagnetic pulse eddy current detection device for metal materials of a power grid to solve the problems raised in the above-mentioned background technology.

[0006] The present application embodiment adopts the following technical solutions:

[0007] A device for detecting electromagnetic pulse eddy current of metal materials of a power grid comprises a power supply box and two vertical plates, the front and rear ends of the power supply box are respectively fixedly connected to the left ends of the opposite surfaces of the two vertical plates, the lower ends of the right surfaces of the two vertical plates are fixedly connected with fixed blocks, the upper surfaces of the two fixed blocks are provided with slots, the two vertical plates are provided with slides, the left end of the slide located at the left end of the vertical plate is a closed end, the slide located at the right end of the vertical plate passes through the vertical plate located at the right end, the right surfaces of the two vertical plates are provided with limiting mechanisms, the limiting mechanisms comprise vertical plates, a conveying mechanism is arranged between the two vertical plates, the conveying mechanism comprises a horizontal plate, a rotating plate and a moving rod, the upper surfaces of the two vertical plates are fixedly provided with electromagnetic pulse eddy current detection equipment, the left end of the front surface of the vertical plate located at the front end is fixedly provided with a control console, the lower ends of the opposite surfaces of the two vertical plates are fixedly connected with horizontal bars, the upper surfaces of the two horizontal bars are equidistantly provided with pulleys, and the two lower groove edges close to the two slides are fixedly connected with limiting bars.

[0008] Preferably, a connecting groove is provided at the right end of the rear surface of the vertical plate at the front end, a gear is rotatably connected in the connecting groove, a rectangular groove is provided in the middle part of the right surface of the two vertical plates, a clamping groove is provided on the upper and lower groove surfaces of the two rectangular grooves, a rectangular block is movably provided in the two rectangular grooves, a clamping block is fixedly connected to the upper and lower surfaces of the two rectangular blocks, the clamping block is movably provided in the clamping groove, and the two rectangular grooves are respectively connected to the two slide grooves;

[0009] Preferably, the bottom surface of the vertical plate is provided with a plate groove and a strip groove with the same groove diameter as the plate groove but different length, the right groove surface of the plate groove is penetrated by a long groove, the upper groove surface of the plate groove is provided with a rod groove, and the left surface of the vertical plate is movably fitted with the right surface of the vertical plate;

[0010] Preferably, a plug plate is movably arranged in the plate slot, a plug rod is fixedly connected to the upper end of the plug plate, a slider is fixedly connected to the upper end of the right surface of the plug plate, the slider is movably arranged in the long slot, the plug rod is movably arranged in the rod slot, a spring is movably sleeved on the rod surface of the plug rod, the lower end of the spring is fixedly connected to the upper surface of the plug plate, the upper end of the spring is fixedly connected to the upper slot surface of the plate slot, and when the slider is located at the lowermost end of the long slot, the lower end of the plug plate is movably located in the slot;

[0011] Preferably, the front end of the upper surface of the horizontal plate and the front end of the right surface of the rotating plate are both provided with equidistant tooth grooves, the middle part of the lower end of the rotating plate is provided with a groove, the front and rear ends of the bottom surface of the horizontal plate are respectively movably fitted with the pulleys on the upper surfaces of the two horizontal bars, and the tooth grooves on the horizontal plate are meshed with the lower end of the gear;

[0012] Preferably, a long plate is fixedly sleeved on the middle part of the rod surface of the moving rod, and two blocks are fixedly sleeved on the front end of the rod surface of the moving rod, and the two blocks are movably arranged in the slide groove of the vertical plate at the front end, and the two faces of the two blocks that are opposite to each other are respectively flush with the front and back faces of the vertical plate at the front end, and a clamping ring and a circular ring are arranged between the two blocks, and the clamping ring is fixedly sleeved on the moving rod, and the inner ring surface of the circular ring is provided with an annular groove, and the annular groove is movably clamped with the clamping ring, and the upper and lower groove surfaces of the slide groove at the front end are both provided with limiting grooves adapted to the circular ring, and the circular ring is movably arranged in the limiting groove, and the front end of the moving rod extends out of the slide groove at the front end;

[0013] Preferably, the rear surface of the moving rod is flush with the long board, and a short groove is provided on the rear surface of the moving rod, a round block is rotatably connected in the short groove, and the round block is movably arranged in a slide groove located at the rear end;

[0014] Preferably, a support plate is fixedly connected to the middle part of the right surface of the long board, a connecting block is fixedly connected to the upper surface of the support plate, and the connecting block is hinged to the rotating plate through a groove.

[0015] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0016] First, the operator holds the moving rod and extends it out of the front end of the slide slot to make the moving rod move left and right along the slide slot. During the movement of the moving rod, the long board is moved with it. At this time, the rotating plate and the horizontal plate are moved in opposite directions through the tooth grooves and gears. When the horizontal plate is located between the two vertical plates for testing, the flattened rotating plate is located on the right side of the two vertical plates for placing and collecting the test objects. By pulling the moving rod, the rotating plate and the horizontal plate are alternately entered into the area between the two vertical plates for testing, so that the testing time and the placement and collection time of the test objects coincide, thereby improving the testing efficiency. The electromagnetic pulse eddy current testing equipment itself has displacement and lifting functions, and the height difference between the rotating plate and the horizontal plate will not affect the testing effect.

[0017] Secondly, the horizontal bar not only limits the horizontal board, but also the pulley on the upper surface facilitates the movement of the horizontal board, avoiding the friction between the horizontal board and the horizontal bar hindering the movement of the horizontal board. The limit bar limits and supports the rotating board and the long board, so that the rotating board and the horizontal board remain horizontal between the two vertical boards, avoiding the tilt of the horizontal board and the rotating board during the test, resulting in the displacement of the test object and affecting the test.

[0018] Third, when the detection equipment is in a non-working state, the rotating plate rotates to a vertical state. At this time, the slider is pulled to disengage the plug plate from the slot, and the rotating plate is rotated to make the two rotating plates horizontal. At this time, the two plug plates are respectively inserted into the two strip grooves under the elastic force of the spring, so that the two rotating plates remain horizontal and the rotating plates remain vertical, thereby avoiding the rotating plate and the horizontal plate from being exposed to the right of the two vertical plates, reducing the occupied space and avoiding damage by walking personnel by accident.

[0019] Fourthly, when the two rotating plates are kept vertical, the lower end of the plug plate is inserted into the slot. At this time, the rotating plate keeps restricting the rectangular block, so that the rectangular block remains in the rectangular groove. By moving out the rectangular block, the entire conveying mechanism can be moved out, which is convenient for disassembly and assembly of the conveying mechanism parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the vertical plate in the present invention;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0024] Figure 4 It is a schematic diagram of the structure of the gear in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the horizontal plate in the present invention;

[0026] Figure 6 It is a structural schematic diagram of a medium-long board of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the transfer plate of the present invention;

[0028] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B in the middle.

[0029] In the figure: 1, vertical plate; 2, horizontal plate; 3, rotating plate; 4, control panel; 5, vertical plate; 8, short slot; 9, power box; 10, slide slot; 11, rod slot; 12, plug rod; 13, plate slot; 14, spring; 15, long slot; 16, slider; 17, plug plate; 18, clamping block; 19, rectangular block; 20, fixed block; 21, slot; 22, clamping slot; 23, limit strip; 24, connecting slot; 25, horizontal bar; 26, gear; 27, groove; 28, tooth groove; 29, long plate; 30, support plate; 31, connecting block; 33, round block; 34, circular ring; 35, annular groove; 36, clamping ring; 37, moving rod; 38, square; 39, electromagnetic pulse eddy current detection equipment; 40, rectangular slot. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0031] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0032] See also Figure 1-Figure 8, an electromagnetic pulse eddy current detection device for metal materials of a power grid, comprising a power box 9 and two vertical plates 1, the front and rear ends of the power box 9 are respectively fixedly connected to the left ends of the opposite surfaces of the two vertical plates 1, the lower ends of the right surfaces of the two vertical plates 1 are fixedly connected with fixed blocks 20, the upper surfaces of the two fixed blocks 20 are provided with slots 21, the two vertical plates 1 are provided with slide grooves 10, the left end of the slide groove 10 located at the left end of the vertical plate 1 is a closed end, the slide groove 10 located at the right end of the vertical plate 1 penetrates the vertical plate 1 located at the right end, and the right surfaces of the two vertical plates 1 are provided with limiting mechanisms, the limiting mechanisms include vertical Plate 5, a conveying mechanism is arranged between the two vertical plates 1, and the conveying mechanism includes a horizontal plate 2, a rotating plate 3 and a moving rod 37. An electromagnetic pulse eddy current detection device 39 is fixedly arranged on the upper surface of the two vertical plates 1, and a control console 4 is fixedly arranged on the left end of the front surface of the vertical plate 1 at the front end. The lower ends of the opposite surfaces of the two vertical plates 1 are fixedly connected with horizontal bars 25, and the upper surfaces of the two horizontal bars 25 are equidistantly provided with pulleys. The two lower groove edges close to the two slide grooves 10 are fixedly connected with the limit strips 23. The right end of the rear surface of the vertical plate 1 at the front end is provided with a connecting groove 24, and a gear is rotatably connected in the connecting groove 24. Wheel 26, rectangular grooves 40 are provided in the middle part of the right surface of the two vertical plates 1, and the upper and lower groove surfaces of the two rectangular grooves 40 are provided with card grooves 22, and rectangular blocks 19 are movably provided in the two rectangular grooves 40, and the upper and lower surfaces of the two rectangular blocks 19 are fixedly connected with card blocks 18, and the card blocks 18 are movably provided in the card grooves 22. The two rectangular grooves 40 are connected with the two slide grooves 10 respectively, and the bottom surface of the vertical plate 5 is provided with a plate groove 13 and a strip groove with the same groove diameter as the plate groove 13 but different length. The right groove surface of the plate groove 13 is penetrated by a long groove 15, and the upper groove surface of the plate groove 13 is provided with a rod groove 11, and the vertical plate The left surface of 5 is movably fitted with the right surface of the vertical plate 1, and a plug plate 17 is movably arranged in the plate groove 13. The upper end of the plug plate 17 is fixedly connected with the plug rod 12. The upper end of the right surface of the plug plate 17 is fixedly connected with a slider 16. The slider 16 is movably arranged in the long groove 15. The plug rod 12 is movably arranged in the rod groove 11. The rod surface of the plug rod 12 is movably sleeved with a spring 14. The lower end of the spring 14 is fixedly connected to the upper surface of the plug plate 17. The upper end of the spring 14 is fixedly connected to the upper groove surface of the plate groove 13. When the slider 16 is located at the lower end of the long groove 15, the lower end of the plug plate 17 is movably located in the slot 21.

[0033] The front end of the upper surface of the horizontal plate 2 and the front end of the right surface of the rotating plate 3 are both provided with equidistant tooth grooves 28, and the middle part of the lower end of the rotating plate 3 is provided with a groove 27. The front and rear ends of the bottom surface of the horizontal plate 2 are respectively movably fitted with the pulleys on the upper surfaces of the two horizontal bars 25, and the tooth grooves 28 on the horizontal plate 2 are meshed with the lower end of the gear 26. The middle part of the rod surface of the moving rod 37 is fixedly sleeved with a long plate 29, and the front end of the rod surface of the moving rod 37 is fixedly sleeved with two blocks 38, and the two blocks 38 are movably set in the slide groove of the vertical plate 1 located at the front end 10, the two faces of the two blocks 38 facing each other are flush with the front and rear faces of the vertical plate 1 at the front end, a snap ring 36 and a circular ring 34 are arranged between the two blocks 38, the snap ring 36 is fixedly sleeved with the moving rod 37, an annular groove 35 is arranged on the inner ring surface of the circular ring 34, the circular groove 35 is movably engaged with the snap ring 36, the upper and lower groove surfaces of the slide groove 10 at the front end are both provided with limiting grooves adapted to the circular ring 34, the circular ring 34 is movably arranged in the limiting groove, and the front end of the moving rod 37 extends out of the slide groove 10 at the front end;

[0034] The rear surface of the moving rod 37 is flush with the long board 29. The operator holds the moving rod 37 and extends it out of the front end of the slide slot 10 to make the moving rod 37 move left and right along the slide slot 10. During the movement of the moving rod 37, the long board 29 is moved accordingly. At this time, the rotating plate 3 and the horizontal board 2 are moved in opposite directions by the tooth grooves 28 and the gears 26. When the horizontal board 2 is located between the two vertical boards 1 for detection, the flattened rotating plate 3 is located on the right side of the two vertical boards 1 for placing and collecting the detection objects. By pulling the moving rod 37, the rotating plate 3 and the horizontal board 2 alternately enter the area between the two vertical boards 1 for detection. The detection time and the placement and collection time of the detected object are overlapped, which improves the detection efficiency. The electromagnetic pulse eddy current detection equipment 39 itself has displacement and lifting functions. The height difference between the rotating plate 3 and the horizontal plate 2 will not affect the detection effect. The horizontal bar 25 plays a role in limiting the horizontal plate 2. At the same time, the pulley on the upper surface facilitates the movement of the horizontal plate 2 to avoid the friction between the horizontal plate 2 and the horizontal bar 25 hindering the movement of the horizontal plate 2. The limiting bar 23 plays a role in limiting and supporting the rotating plate 3 and the long plate 29, so that the rotating plate 3 and the horizontal plate 2 remain horizontal between the two vertical plates 1, avoiding the horizontal plate 2 during detection. The tilt of the rotating plate 3 causes the detection object to deviate and affect the detection. When the detection equipment is in a non-working state, the rotating plate 3 rotates to a vertical state. At this time, the slider 16 is pulled to make the plug plate 17 disengage from the slot 21, and the vertical plate 5 is rotated to make the two vertical plates 5 horizontal. At this time, the two plug plates 17 are respectively inserted into the two strip-shaped grooves under the elastic force of the spring 14, so that the two vertical plates 5 remain horizontal, and the rotating plate 3 remains in a vertical state, thereby avoiding the rotating plate 3 and the horizontal plate 2 from being exposed to the right side of the two vertical plates 1, reducing the occupied space and avoiding damage by walking people accidentally hitting them. When the two vertical plates 5 remain vertical, the plug plate 17 The lower end of the plate 17 is inserted into the slot 21. At this time, the vertical plate 5 maintains the restriction on the rectangular block 19, so that the rectangular block 19 remains in the rectangular groove 40. By moving out the rectangular block 19, the entire conveying mechanism can be moved out, which is convenient for disassembly and assembly of the conveying mechanism parts. A short groove 8 is opened on the rear surface of the movable rod 37, and a round block 33 is rotatably connected in the short groove 8. The round block 33 is movably arranged in the slide groove 10 located at the rear end. The middle part of the right surface of the long plate 29 is fixedly connected to the support plate 30, and the upper surface of the support plate 30 is fixedly connected to the connecting block 31. The connecting block 31 is hinged to the rotating plate 3 through the groove 27.

[0035] When in use, the operator holds the moving rod 37 and extends it out of the front end of the slide slot 10 to make the moving rod 37 move left and right along the slide slot 10. During the movement of the moving rod 37, the long plate 29 is driven to move accordingly. At this time, the rotating plate 3 and the cross plate 2 are moved in opposite directions by the tooth grooves 28 and the gears 26. When the cross plate 2 is located between the two vertical plates 1 for detection, the flattened rotating plate 3 is located on the right side of the two vertical plates 1 to place and collect the detected objects. By pulling the moving rod 37, the rotating plate 3 and the cross plate 2 are alternately entered into the area between the two vertical plates 1 for detection, so that the detection time coincides with the placement and collection time of the detected objects, thereby improving the detection efficiency. The electromagnetic pulse eddy current detection equipment 39 itself has displacement and lifting functions, and the height difference between the rotating plate 3 and the cross plate 2 will not affect the detection effect. While the cross bar 25 plays a role in limiting the cross plate 2, the pulley on the upper surface facilitates the movement of the cross plate 2 to avoid the friction between the cross plate 2 and the cross bar 25 hindering the movement of the cross plate 2. When the two vertical plates 5 are kept vertical, the lower ends of the plug plates 17 are inserted into the slots 21. At this time, the vertical plates 5 keep the restriction on the rectangular block 19, so that the rectangular block 19 remains in the rectangular slot 40. By removing the rectangular block 19, the entire conveying mechanism can be removed, which is convenient for disassembly and assembly of the conveying mechanism parts.

[0036] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0037] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0038] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An electromagnetic pulse eddy current detection device for metal materials in a power grid, comprising a power supply box (9) and two vertical plates (1), characterized in that: The front and rear ends of the power box (9) are respectively fixedly connected to the left ends of the opposite surfaces of the two vertical plates (1); the lower ends of the right surfaces of the two vertical plates (1) are fixedly connected with fixed blocks (20); the upper surfaces of the two fixed blocks (20) are provided with slots (21); the two vertical plates (1) are provided with slide grooves (10); the left end of the slide groove (10) at the left end of the vertical plate (1) is a closed end; the slide groove (10) at the right end of the vertical plate (1) passes through the vertical plate (1) at the right end; The right surfaces of the two vertical plates (1) are both provided with a limiting mechanism, and the limiting mechanism comprises a vertical plate (5); A conveying mechanism is arranged between the two vertical plates (1), and the conveying mechanism comprises a horizontal plate (2), a rotating plate (3) and a moving rod (37); An electromagnetic pulse eddy current detection device (39) is fixedly arranged on the upper surface of the two vertical plates (1), a control console (4) is fixedly arranged on the left end of the front surface of the vertical plate (1) at the front end, the lower ends of the opposite surfaces of the two vertical plates (1) are fixedly connected with horizontal bars (25), the upper surfaces of the two horizontal bars (25) are evenly spaced with pulleys, and the two lower groove edges adjacent to the two slide grooves (10) are fixedly connected with limit bars (23); A connecting groove (24) is provided at the right end of the rear surface of the vertical plate (1) at the front end, a gear (26) is rotatably connected in the connecting groove (24), a rectangular groove (40) is provided in the middle part of the right surface of the two vertical plates (1), the upper and lower groove surfaces of the two rectangular grooves (40) are provided with a clamping groove (22), a rectangular block (19) is movably provided in the two rectangular grooves (40), the upper and lower surfaces of the two rectangular blocks (19) are fixedly connected with a clamping block (18), the clamping block (18) is movably provided in the clamping groove (22), and the two rectangular grooves (40) are respectively connected to the two slide grooves (10); The front end of the upper surface of the horizontal plate (2) and the front end of the right surface of the rotating plate (3) are both provided with equidistant tooth grooves (28), the middle part of the lower end of the rotating plate (3) is provided with a groove (27), the front and rear ends of the bottom surface of the horizontal plate (2) are respectively movably fitted with the pulleys on the upper surfaces of the two horizontal bars (25), and the tooth grooves (28) on the horizontal plate (2) are meshed with the lower end of the gear (26); The middle part of the rod surface of the moving rod (37) is fixedly sleeved with a long plate (29), and the front end of the moving rod (37) is fixedly sleeved with two blocks (38), and the two blocks (38) are movably arranged in the slide groove (10) of the vertical plate (1) at the front end, and the two faces of the two blocks (38) that are separated from each other are respectively flush with the front and back faces of the vertical plate (1) at the front end, and a clamping ring (36) and a circular ring (34) are arranged between the two blocks (38), and the clamping ring (36) is fixedly sleeved with the moving rod (37), and the inner ring surface of the circular ring (34) is provided with an annular groove (35), and the annular groove (35) is movably clamped with the clamping ring (36), and the upper and lower groove surfaces of the slide groove (10) at the front end are both provided with limiting grooves adapted to the circular ring (34), and the circular ring (34) is movably arranged in the limiting groove, and the front end of the moving rod (37) extends out of the slide groove (10) at the front end; A support plate (30) is fixedly connected to the middle part of the right surface of the long plate (29), and a connecting block (31) is fixedly connected to the upper surface of the support plate (30). The connecting block (31) is hinged to the rotating plate (3) through a groove (27).

2. The electromagnetic pulse eddy current detection device for metal materials of power grid according to claim 1, characterized in that: The bottom surface of the vertical plate (5) is provided with a plate groove (13) and a strip groove with the same groove diameter as the plate groove (13) but different length; the right groove surface of the plate groove (13) is penetrated by a long groove (15); the upper groove surface of the plate groove (13) is provided with a rod groove (11); the left surface of the vertical plate (5) is movably fitted with the right surface of the vertical plate (1).

3. The electromagnetic pulse eddy current detection device for metal materials of power grid according to claim 2, characterized in that: A plug plate (17) is movably arranged in the plate slot (13), the upper end of the plug plate (17) is fixedly connected to a plug rod (12), the upper end of the right surface of the plug plate (17) is fixedly connected to a slider (16), the slider (16) is movably arranged in the long slot (15), the plug rod (12) is movably arranged in the rod slot (11), the rod surface of the plug rod (12) is movably sleeved with a spring (14), the lower end of the spring (14) is fixedly connected to the upper surface of the plug plate (17), the upper end of the spring (14) is fixedly connected to the upper slot surface of the plate slot (13), and when the slider (16) is located at the lowermost end of the long slot (15), the lower end of the plug plate (17) is movably located in the slot (21).

4. The electromagnetic pulse eddy current detection device for metal materials of power grid according to claim 3, characterized in that: The rear surface of the moving rod (37) is flush with the long plate (29), and a short groove (8) is provided on the rear surface of the moving rod (37).

5. The electromagnetic pulse eddy current detection device for metal materials of power grid according to claim 4, characterized in that: A round block (33) is rotatably connected in the short slot (8), and the round block (33) is movably arranged in the slide slot (10) located at the rear end.

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