Ground wire flaw detection assembly based on photonic crystal elastic waves

Abstract

The invention is suitable for the technical field of electric power maintenance, and provides a ground wire flaw detection assembly based on photonic crystal elastic waves, the ground wire flaw detection assembly based on photonic crystal elastic waves comprises: a cabinet, in which is arranged a flaw detection host, a data collector, a power amplifier and a charge amplifier; the placement shell is fixed on one side of the case, and a first flaw detection clamp and a second flaw detection clamp are arranged in the placement shell; the sensor and the exciter are arranged on the first flaw detection clamp and the second flaw detection clamp respectively, the exciter is used for generating photonic crystal elastic waves, and the sensor is used for receiving photonic crystal elastic wave signals reflected by a ground wire. The ground wire flaw detection assembly based on the photonic crystal elastic waves solves the technical problems that a traditional ground wire detection method is low in efficiency, and tiny internal defects are difficult to find.

Description

Technical Field

[0001] The invention belongs to the technical field of electric power maintenance, and in particular relates to a ground wire flaw detection component based on phononic crystal elastic waves. Background Art

[0002] In the power transmission system, the ground wire is a key component of the high-voltage transmission line. Its safe and stable operation is directly related to the overall reliability and power supply quality of the power grid. However, due to long-term exposure to harsh natural environments, the ground wire is prone to various forms of damage, including but not limited to fatigue cracks, corrosion erosion, and potential fracture risks. If these internal or minor defects are not discovered and repaired in time, they may cause serious safety accidents and pose a major threat to the safety of the power grid.

[0003] Traditional ground wire detection methods mainly rely on manual visual inspection or the use of simple electrical testing equipment. Although manual visual inspection is intuitive, it is inefficient and difficult to detect tiny defects hidden inside the wire. Simple electrical testing equipment can often only detect changes in surface electrical properties but is powerless against internal structural damage. Therefore, it is particularly important to explore a new technology that can efficiently and accurately detect internal defects in ground wires.

[0004] In recent years, phononic crystals, as a new type of artificial microstructure material, have attracted much attention due to their unique sound wave propagation characteristics. Phononic crystals are formed in a matrix through periodically arranged scatterers (such as particles, holes, etc.), which can control the propagation of sound waves and produce special phenomena such as band gaps (i.e., areas within the frequency range where sound waves cannot propagate). This characteristic provides a new idea for non-destructive testing technology, that is, using the elastic waves generated by phononic crystals (also called phononic crystal elastic waves) to detect defects inside the material; when phononic crystal elastic waves propagate in the material, reflection, scattering or transmission will occur when encountering defects, and these phenomena carry information about the location, size, shape, etc. of the defects. By designing a suitable phononic crystal structure and excitation method, elastic waves of specific frequencies and modes can be generated, and the propagation characteristics of these waves can be received and analyzed by using highly sensitive sensors, thereby realizing non-destructive detection of defects inside the material. Based on the above background, the present invention proposes a ground wire flaw detection component based on phononic crystal elastic waves. Summary of the invention

[0005] In order to solve the technical problems that the traditional ground wire detection method is inefficient and difficult to find tiny internal defects, the present invention provides a ground wire flaw detection component based on phononic crystal elastic waves.

[0006] The present invention is implemented as follows: a ground wire flaw detection component based on phononic crystal elastic waves comprises: a chassis, in which a flaw detection host, a data acquisition device, a power amplifier and a charge amplifier are arranged; a placement shell fixed to one side of the chassis, in which a first flaw detection fixture and a second flaw detection fixture are arranged; a sensor and an exciter respectively arranged on the first flaw detection fixture and the second flaw detection fixture, the exciter is used to generate phononic crystal elastic waves, and the sensor is used to receive the phononic crystal elastic wave signal reflected by the ground wire; clamping blocks respectively arranged on the first flaw detection fixture and the second flaw detection fixture and with adjustable spacing, respectively used to assemble the sensor and the exciter, and can also be used to clamp the ground wire and locate the detection area; and an adjustment mechanism respectively arranged on the first flaw detection fixture and the second flaw detection fixture and used to adjust the spacing between the clamping blocks.

[0007] Preferably, the adjustment mechanism includes: a mounting frame arranged above the clamping block, a mounting shell being fixed on the top of the mounting frame; an assembly frame slidably mounted on the mounting frame, one end of the assembly frame passing through the mounting shell; a detachable connecting sleeve mounted on one end of the assembly frame, the connecting sleeve being fixedly connected to the clamping block; a bolt arranged on the connecting sleeve and used for limiting the position, the bolt thread passing through the assembly frame.

[0008] Preferably, a limiting mechanism for limiting the position of the assembly rack is provided on the mounting shell, and the limiting mechanism includes: a mounting rod fixed in the mounting shell, a first spring being sleeved on the mounting rod; a limiting rack slidably sleeved on the mounting rod; a limiting block fixed on the limiting rack, the limiting block being clamped with the assembly rack; a connecting rack slidably mounted on the mounting shell, the bottom end of the connecting rack being fixedly connected to the top of the limiting rack, and a first pressing block being fixed on the top of the connecting rack.

[0009] Preferably, a reset mechanism for resetting the assembly frame is provided on the mounting shell, and the reset mechanism includes: an assembly plate fixed on the top of the mounting frame, a mounting tube fixed on the assembly plate; a second spring arranged in the mounting tube; a pressure block slidably installed in the mounting tube, a sliding rod fixedly installed on the pressure block, and one end of the sliding rod is fixedly connected to the assembly frame.

[0010] Preferably, a plurality of tooth blocks are fixed on the assembly frame, a gear is rotatably mounted in the mounting shell, the gear is meshed with the tooth blocks, and a through hole is opened on the mounting shell, and the through hole is adapted to the slide rod.

[0011] Preferably, a through opening is formed on the mounting shell, the through opening is matched with the assembly frame, a ball is embedded in the through opening, and the ball is in contact with the mounting frame.

[0012] Preferably, the clamping block is provided with an assembly hole, the assembly hole is adapted to the exciter and the sensor, and the exciter and the sensor are both provided with mounting plates, and the mounting plates are fixedly connected to the clamping block by screws.

[0013] Preferably, a second pressing block is fixedly mounted on the assembly frame, an arc groove is provided on the second pressing block, and the second pressing block is made of rubber material.

[0014] Preferably, the chassis is provided with a first door that can be opened and closed, the first door is hinged to the chassis through a first hinge, and the first door is provided with a visual observation window and a door lock.

[0015] Preferably, the placement shell is provided with a second door that can be opened and closed, the second door is hinged to the placement shell through a second hinge, and the top of the chassis is provided with a handle for grasping and carrying.

[0016] Compared with the related art, the ground wire flaw detection assembly based on phononic crystal elastic waves provided by the present invention has the following beneficial effects:

[0017] Through the integrated control and data processing of the flaw detection host, the automation of the detection process is realized and the detection efficiency is improved; the power amplifier and charge amplifier ensure the strength and recognition of the signal, and improve the accuracy and reliability of the detection; the adjustable spacing of the clamping blocks ensures that the components can adapt to ground wires of different sizes, enhancing the versatility and flexibility of the detection; the precise positioning of the sensor and the actuator, combined with the stable clamping of the clamping blocks, improves the accuracy of the positioning of the detection area. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the side view structure of a ground wire flaw detection assembly based on phononic crystal elastic waves provided by the present invention;

[0019] Figure 2 A schematic diagram of a side cross-sectional structure of a ground wire flaw detection assembly based on phononic crystal elastic waves provided by the present invention;

[0020] Figure 3 It is a schematic diagram of the main structure of the first flaw detection fixture in the present invention;

[0021] Figure 4 It is a schematic diagram of the main cross-sectional structure of the first flaw detection fixture in the present invention;

[0022] Figure 5 for Figure 4 An enlarged structural diagram of part A shown in FIG.

[0023] Figure 6 for Figure 4 An enlarged schematic diagram of the structure of part B shown in FIG.

[0024] Figure 7 for Figure 4 An enlarged schematic diagram of the structure of part C shown in FIG.

[0025] Figure 8 for Figure 4 An enlarged structural diagram of part D shown in FIG.

[0026] Fig. 9 It is a structural schematic diagram of the assembly frame and the gear block in the present invention;

[0027] Fig.10 It is a schematic diagram of the structure of the limiting frame and the limiting block in the present invention;

[0028] Fig.11 It is a schematic diagram of the assembly of the first flaw detection fixture, the second flaw detection fixture and the ground wire in the present invention.

[0029] Figure numerals: 1, chassis; 2, flaw detection host; 3, data acquisition device; 4, power amplifier; 5, charge amplifier; 6, placement shell; 7, first flaw detection fixture; 8, second flaw detection fixture; 9, clamping block; 10, mounting plate; 101, exciter; 11, sensor; 12, mounting frame; 13, mounting shell; 14, assembly frame; 15, connecting sleeve; 16, first spring; 17, limit frame; 18, limit block; 19, connection Frame; 20, first push block; 21, assembly plate; 22, installation tube; 23, second spring; 24, pressure block; 25, slide rod; 26, tooth block; 27, gear; 28, through port; 29, ball bearing; 30, through hole; 31, assembly hole; 32, bolt; 33, second push block; 34, first box door; 35, first hinge; 36, second box door; 37, second hinge; 38, handle; 39, ground wire; 40, installation rod. DETAILED DESCRIPTION

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification of this application and the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0032] The embodiment of the present invention provides a ground wire flaw detection component based on phononic crystal elastic waves, such as Figure 1-11 As shown, the ground wire flaw detection component based on phononic crystal elastic waves includes: a chassis 1, in which a flaw detection host 2, a data acquisition device 3, a power amplifier 4 and a charge amplifier 5 are arranged; a placement shell 6 fixed to one side of the chassis 1, in which a first flaw detection fixture 7 and a second flaw detection fixture 8 are arranged; a sensor 11 and an exciter 101 are respectively arranged on the first flaw detection fixture 7 and the second flaw detection fixture 8, the exciter 101 is used to generate phononic crystal elastic waves, and the sensor 11 is used to receive the phononic crystal elastic wave signal reflected by the ground wire 39; clamping blocks 9 are respectively arranged on the first flaw detection fixture 7 and the second flaw detection fixture 8 and have adjustable spacing, which are respectively used to assemble the sensor 11 and the exciter 101, and can also be used to clamp the ground wire 39 and locate the detection area; and adjustment mechanisms are respectively arranged on the first flaw detection fixture 7 and the second flaw detection fixture 8 and used to adjust the spacing of the clamping blocks 9.

[0033] In this embodiment, the chassis 1 serves as the core support and integrated unit of the entire flaw detection component, and the main electronic equipment of the flaw detection system is integrated inside; the flaw detection host 2 is responsible for controlling the entire flaw detection process, including starting signal sending, data processing and result display, etc.; the data collector 3 collects the phononic crystal elastic wave signal received by the sensor with high sensitivity to provide accurate data for subsequent analysis; the power amplifier 4 enhances the signal strength of the phononic crystal elastic wave generated by the exciter to ensure sufficient energy to penetrate the ground wire under test; the charge amplifier 5 amplifies the weak signal received by the sensor to improve the signal recognizability and signal-to-noise ratio; the placement shell 6 is fixed on one side of the chassis 1 to provide a stable installation environment for the flaw detection fixture and the detection element; the first flaw detection fixture 7 and the second flaw detection fixture 8: a sensor 11 and an exciter 101 are respectively provided to ensure accurate positioning and clamping of the ground wire; the sensor 11 receives the phononic crystal elastic wave signal reflected by the ground wire 39 to capture the waveform changes caused by internal defects; the exciter 101 generates a phononic crystal elastic wave of a specific frequency and mode to detect the potential inside the ground wire. The invention discloses a method for detecting defects; the spacing of the clamping blocks 9 is adjustable, and the sensor 11 and the exciter 101 are assembled, and the ground wire 39 is clamped and the detection area is positioned; the adjustment mechanism is arranged on the flaw detection fixture, which is used to flexibly adjust the spacing of the clamping blocks 9 to adapt to the ground wires of different sizes and detection requirements; through the automated and integrated design, the efficiency of ground wire detection is significantly improved, and the time cost of manual intervention and visual inspection is reduced; by utilizing the unique propagation characteristics of phononic crystal elastic waves, the tiny defects inside the ground wire can be deeply detected, including structural damage and hidden cracks, which far exceeds the detection capability of traditional electrical testing equipment; as a non-contact or slight contact detection method, it will not cause physical damage to the ground wire, and ensure the integrity of the detected object and the safety of subsequent use; the design of adjustable spacing of the clamping blocks enables the flaw detection component to be applicable to ground wires of different specifications and models, and enhances the versatility and flexibility of the equipment; through the above-mentioned structural and functional design, the shortcomings of traditional detection methods in efficiency and accuracy are effectively solved, and strong technical support is provided for the safe detection and maintenance of ground wires.

[0034] In a further preferred embodiment of the present invention, the adjustment mechanism includes: a mounting frame 12 arranged above the clamping block 9, a mounting shell 13 being fixed to the top of the mounting frame 12; an assembly frame 14 slidably mounted on the mounting frame 12, one end of the assembly frame 14 passing through the mounting shell 13; a detachable connecting sleeve 15 sleeved on one end of the assembly frame 14, the connecting sleeve 15 being fixedly connected to the clamping block 9; a bolt 32 arranged on the connecting sleeve 15 and used for limiting, the bolt 32 threadedly passing through the assembly frame 14.

[0035] In this embodiment, the mounting frame 12 is located above the clamping block 9, providing a stable sliding track for the assembly frame 14 to ensure the stability and accuracy of the adjustment process; the mounting shell 13 is fixed on the top of the mounting frame 12 to provide necessary support and protection for the adjustment mechanism; the assembly frame 14 is slidably mounted on the mounting frame 12, and the adjustment of the spacing of the clamping blocks 9 is achieved through its sliding movement; the connecting sleeve 15 is sleeved on one end of the assembly frame 14 and fixedly connected to the clamping block 9. This design enables the sliding of the assembly frame 14 to directly drive the clamping blocks 9 to move, thereby adjusting the spacing between the clamping blocks 9; the bolt 32 is set on the connecting sleeve 15, which is used to fasten the connecting sleeve 15 and the assembly frame 14 together to prevent loosening or displacement during the detection process. The bolt 32 threadably penetrates the assembly frame 14. By rotating the bolt 32, a tight connection between the connecting sleeve 15 and the assembly frame 14 can be achieved. By pressing the assembly frame 14 in the same direction, the distance between the two clamping blocks 9 is reduced so as to clamp the ground wire 39, thereby achieving distance adjustment. When the clamping block 9 clamps the ground wire 39, the exciter 101 and the sensor 11 will contact the ground wire 39.

[0036] In a further preferred embodiment of the present invention, a limiting mechanism for limiting the assembly frame 14 is provided on the mounting shell 13, and the limiting mechanism includes: a mounting rod 40 fixed in the mounting shell 13, and a first spring 16 is sleeved on the mounting rod 40; a limiting frame 17 slidably sleeved on the mounting rod 40; a limiting block 18 fixed on the limiting frame 17, and the limiting block 18 is clamped with the assembly frame 14; a connecting frame 19 slidably installed on the mounting shell 13, and the bottom end of the connecting frame 19 is fixedly connected to the top of the limiting frame 17, and a first pressing block 20 is fixed on the top of the connecting frame 19.

[0037] In this embodiment, the limiting mechanism includes a mounting rod 40, a first spring 16, a limiting frame 17, a limiting block 18, a connecting frame 19 and a first pressing block 20. When a person presses the assembly frame 14 in the same direction, the assembly frame 14 will move along its sliding track and will come into contact with the limiting block 18. After the arc surface designed on the limiting block 18 comes into contact with the bottom of the assembly frame 14, as the assembly frame 14 continues to move, the arc surface will gradually guide the limiting block 18 to move in the direction of the groove on the assembly frame 14. When the assembly frame 14 moves to a certain position, the limiting block 18 will be smoothly stuck in the groove on the assembly frame 14, so that The assembly frame 14 is limited to prevent it from further sliding, thereby limiting the assembly frame 14; when unlocking is required, the operator only needs to press the first push block 20 downward with a finger. The first push block 20 is fixedly connected to the limit frame 17 through the connecting frame 19. Therefore, pressing the first push block 20 will drive the connecting frame 19 and the limit frame 17 to move downward together. As the limit frame 17 moves downward, the limit block 18 fixed thereon will also move accordingly, and finally disengage from the groove of the assembly frame 14 to achieve unlocking; in summary, by limiting the assembly frame 14, the stability of the clamping of the clamping block 9 can be guaranteed.

[0038] In a further preferred embodiment of the present invention, a reset mechanism for resetting the assembly frame 14 is provided on the mounting shell 13, and the reset mechanism includes: an assembly plate 21 fixed to the top of the mounting frame 12, and a mounting tube 22 is fixed on the assembly plate 21; a second spring 23 is arranged in the mounting tube 22; a pressure block 24 slidably installed in the mounting tube 22, and a sliding rod 25 is fixedly installed on the pressure block 24, and one end of the sliding rod 25 is fixedly connected to the assembly frame 14.

[0039] In this embodiment, the assembly plate 21 is fixed to the top of the mounting frame 12 as the installation base of the reset mechanism; the mounting tube 22 is fixed on the assembly plate 21 to provide an installation space for the second spring 23 and the pressure block 24; the second spring 23 is arranged in the mounting tube 22 to provide a reset force for the pressure block 24; the pressure block 24 is slidably installed in the mounting tube 22 and is connected to the bottom of the mounting tube 22 through the second spring 23; one end of the slide bar 25 is fixed on the pressure block 24, and the other end is fixedly connected to the assembly frame 14 for transmitting the reset force; when the assembly frame 14 is pressed, the slide bar 25 also slides into the mounting tube 22, and the pressure block 24 also slides and compresses the second spring 23, and when the assembly frame 14 is unlocked, due to the reset force of the second spring 23, the pressure block 24 and the slide bar 25 will slide and drive the assembly frame 14 to reset, the clamping block 9 is separated from the grounding wire 39, and the reset mechanism realizes the automatic reset function of the assembly frame 14 through the reset force of the second spring 23, and the operator only needs to unlock the assembly frame 14 to achieve reset, which is more convenient.

[0040] In a further preferred embodiment of the present invention, a plurality of tooth blocks 26 are fixed on the assembly frame 14, a gear 27 is rotatably installed in the mounting shell 13, the gear 27 is meshed with the tooth block 26, and a through hole 30 is opened on the mounting shell 13, and the through hole 30 is adapted to the slide rod 25.

[0041] In this embodiment, the tooth block 26 is fixed on the assembly frame 14 as a component that meshes with the gear 27; the gear 27 is rotatably installed in the mounting shell 13 and meshes with the tooth block 26 to transmit power and adjust the position of the assembly frame 14; the through hole 30 is opened on the mounting shell 13, adapted to the slide bar 25, allowing the slide bar 25 to slide smoothly in the mounting shell 13. When the assembly frame 14 is pressed to slide, the gear 27 rotates accordingly to cooperate with the tooth block 26 to guide the assembly frame 14, helping to prevent the assembly frame 14 from deviating or shaking during the sliding process.

[0042] In a further preferred embodiment of the present invention, a through opening 28 is formed on the mounting shell 13 , the through opening 28 is adapted to the assembly frame 14 , a ball 29 is embedded in the through opening 28 , and the ball 29 is in contact with the mounting frame 12 .

[0043] In this embodiment, the through opening 28 can ensure that the assembly frame 14 can slide normally. The ball 29 acts as a rolling friction medium, reducing the friction resistance between the assembly frame 14 and the mounting shell 13, and when the assembly frame 14 is pressed, it slides more smoothly.

[0044] In a further preferred embodiment of the present invention, an assembly hole 31 is provided on the clamp block 9, and the assembly hole 31 is adapted to the exciter 101 and the sensor 11. The exciter 101 and the sensor 11 are both provided with a mounting plate 10, and the mounting plate 10 is fixedly connected to the clamp block 9 by screws.

[0045] In this embodiment, the assembly hole 31 is provided on the clamping block 9, and is adapted to the exciter 101 and the sensor 11. This assembly hole provides an installation position for the exciter 101 and the sensor 11, ensuring that they can be accurately fixed on the clamping block 9; the mounting sheet 10 is provided on the exciter 101 and the sensor 11, and is used to connect with the clamping block 9. The mounting sheet 10 usually has a hole position corresponding to the assembly hole 31, so as to be fixedly connected with the clamping block 9 by fasteners such as screws; the screws are fasteners used to fix the mounting sheet 10 with the clamping block 9. By tightening the screws, the exciter 101 and the sensor 11 can be firmly installed on the clamping block 9.

[0046] In a further preferred embodiment of the present invention, a second pressing block 33 is fixedly mounted on the assembly frame 14 , an arc-shaped groove is provided on the second pressing block 33 , and the second pressing block 33 is made of rubber.

[0047] In this embodiment, the second push block 33 is fixedly mounted on the assembly frame 14 as a user interaction interface. It is designed so that the user can drive the sliding or other actions of the assembly frame 14 by pressing or operating the block; the arc groove is arranged on the second push block 33. The design of this arc groove may be intended to increase the contact area and comfort between the user's hand and the second push block 33, while providing the user with better operation guidance or feedback; the second push block 33 is made of rubber material. The rubber material has good elasticity, wear resistance and anti-slip properties. These characteristics enable the second push block 33 to provide a comfortable touch when pressed and reduce the possibility of hand slippage; when the user needs to adjust the position of the assembly frame 14, they will press the second push block 33 with their fingers or palms. Since the second push block 33 is fixed on the assembly frame 14, this pressing force will be converted into the sliding power of the assembly frame 14.

[0048] In a further preferred embodiment of the present invention, the chassis 1 is provided with a first door 34 that can be opened and closed. The first door 34 is hinged to the chassis 1 through a first hinge 35. The first door 34 is provided with a visual observation window and a door lock.

[0049] In this embodiment, the first door 34 is arranged on the chassis 1 and has the characteristic of being openable and closable; the first hinge 35 allows the first door 34 to rotate around a fixed point (i.e., the axis of the hinge) to achieve the opening and closing action; the visual observation window is arranged on the first door 34, allowing the user to observe the situation inside the chassis 1 without opening the door. This helps to conduct preliminary inspection or monitoring without interrupting the operation of the equipment; the door lock is also arranged on the first door 34, used to lock the first door 34, and ensure the safety and protection inside the chassis 1. The door lock can prevent unauthorized access or misoperation and protect the equipment from damage; when it is necessary to access the inside of the chassis 1, the user can use a key or other unlocking method to open the door lock, and then rotate the first door 34 around the first hinge 35 to open it to expose the internal space of the chassis 1; when it is not necessary to access the inside, the user can close the first door 34 and lock it with the door lock to keep the chassis 1 in a closed state; the visual observation window allows the user to view the status inside the chassis 1 at any time without opening the door, which increases the convenience and safety of the equipment.

[0050] In a further preferred embodiment of the present invention, a second door 36 that can be opened and closed is provided on the placement shell 6, and the second door 36 is hinged to the placement shell 6 through a second hinge 37. A handle 38 for grasping and carrying is provided on the top of the chassis 1.

[0051] In this embodiment, the second door 36 is arranged on the placement shell 6 and has the characteristic of being openable and closable. When taking out the first flaw detection fixture 7 and the second flaw detection fixture 8, the user can first open the handle lock on the second door 36, and then open the second door 36 to take out.

[0052] It is worth noting that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to software and methods.

[0053] To sum up, compared with the related art, the ground wire flaw detection component based on phononic crystal elastic waves proposed in the present invention realizes the automation of the detection process and improves the detection efficiency through the integrated control and data processing of the flaw detection host 2; the power amplifier 4 and the charge amplifier 5 ensure the strength and recognition of the signal and improve the accuracy and reliability of the detection; the spacing of the clamping blocks 9 is adjustable to ensure that the component can adapt to ground wires of different sizes and enhance the versatility and flexibility of the detection; the precise positioning of the sensor 11 and the exciter 101, combined with the stable clamping of the clamping block 9, improves the positioning accuracy of the detection area; through the sliding design of the mounting frame 12 and the assembly frame 14, combined with the limiting mechanism, the convenient adjustment and stable locking of the spacing of the clamping blocks 9 are realized; the reset mechanism realizes the automatic reset of the assembly frame 14 through the reset force of the second spring 23, simplifies the operation process and improves the convenience of use.

[0054] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. A ground wire flaw detection component based on phononic crystal elastic waves, characterized in that: include: A chassis (1), wherein a flaw detection host (2), a data acquisition device (3), a power amplifier (4) and a charge amplifier (5) are arranged in the chassis (1); A placement shell (6) fixed to one side of the chassis (1), wherein a first flaw detection fixture (7) and a second flaw detection fixture (8) are arranged in the placement shell (6); A sensor (11) and an exciter (101) arranged on the first flaw detection fixture (7) or the second flaw detection fixture (8), wherein the exciter (101) is used to generate a phononic crystal elastic wave, and the sensor (11) is used to receive a phononic crystal elastic wave signal reflected by a ground wire (39); a clamping block (9) arranged on the first flaw detection fixture (7) or the second flaw detection fixture (8) and having an adjustable spacing, the clamping block (9) being used to assemble the sensor (11) and the actuator (101), and the clamping block (9) being also used to clamp the ground wire (39) and locate the detection area; An adjustment mechanism is provided on the first flaw detection fixture (7) or the second flaw detection fixture (8) and is used to adjust the spacing between the clamping blocks (9).

2. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 1, characterized in that: The regulating mechanism comprises: A mounting frame (12) is arranged above the clamping block (9), and a mounting shell (13) is fixed on the top of the mounting frame (12); An assembly frame (14) slidably mounted on the mounting frame (12), one end of the assembly frame (14) penetrating into the mounting shell (13); A detachable connecting sleeve (15) sleeved on one end of the assembly frame (14), wherein the connecting sleeve (15) is fixedly connected to the clamping block (9); A bolt (32) is arranged on the connecting sleeve (15) and is used for limiting the position. The bolt (32) is threadedly passed through the assembly frame (14).

3. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 2, characterized in that: The installation shell (13) is provided with a limiting mechanism for limiting the position of the assembly frame (14), and the limiting mechanism comprises: a mounting rod (40) fixed in the mounting shell (13), wherein a first spring (16) is sleeved on the mounting rod (40); A limiting frame (17) slidably sleeved on the mounting rod (40); A limit block (18) fixed on the limit frame (17), wherein the limit block (18) is clamped with the assembly frame (14); A connecting frame (19) is slidably mounted on the mounting shell (13), the bottom end of the connecting frame (19) is fixedly connected to the top of the limiting frame (17), and a first pressing block (20) is fixed to the top of the connecting frame (19).

4. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 2, characterized in that: The mounting shell (13) is provided with a reset mechanism for resetting the assembly frame (14), and the reset mechanism comprises: An assembly plate (21) fixed on the top of the mounting frame (12), wherein a mounting tube (22) is fixed on the assembly plate (21); A second spring (23) disposed in the mounting tube (22); A pressing block (24) is slidably mounted in the mounting tube (22), a sliding rod (25) is fixedly mounted on the pressing block (24), and one end of the sliding rod (25) is fixedly connected to the assembly frame (14).

5. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 4, characterized in that: A plurality of tooth blocks (26) are fixed on the assembly frame (14), a gear (27) is rotatably mounted in the mounting shell (13), the gear (27) is meshed with the tooth block (26), and a through hole (30) is opened on the mounting shell (13), and the through hole (30) is adapted to the slide rod (25).

6. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 2, characterized in that: The installation shell (13) is provided with a through opening (28), the through opening (28) is adapted to the assembly frame (14), a ball (29) is embedded in the through opening (28), and the ball (29) is in contact with the installation frame (12).

7. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 1, characterized in that: The clamping block (9) is provided with an assembly hole (31), the assembly hole (31) is adapted to the exciter (101) and the sensor (11), the exciter (101) and the sensor (11) are both provided with a mounting plate (10), and the mounting plate (10) is fixedly connected to the clamping block (9) by means of screws.

8. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 2, characterized in that: A second pressing block (33) is fixedly mounted on the assembly frame (14), an arc-shaped groove is provided on the second pressing block (33), and the second pressing block (33) is made of rubber material.

9. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 1, characterized in that: The case (1) is provided with a first door (34) that can be opened and closed. The first door (34) is hinged to the case (1) via a first hinge (35). The first door (34) is provided with a visual observation window and a door lock.

10. The ground wire flaw detection assembly based on phononic crystal elastic waves according to claim 1, characterized in that: The placement shell (6) is provided with a second door (36) that can be opened and closed. The second door (36) is hinged to the placement shell (6) via a second hinge (37). The top of the case (1) is provided with a handle (38) for grasping and carrying.

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