Insulator defect detection device based on acoustic image fusion technology

Abstract

The utility model discloses an insulator defect detection device based on the acoustic image fusion technology, and particularly relates to the field of power transmission line maintenance, the insulator defect detection device comprises a connecting frame, an insulator is arranged at the bottom of the connecting frame, a ring winding detection mechanism and a padlock mechanism are arranged on the outer wall of the connecting frame, and the ring winding detection mechanism comprises a gear motor arranged on one side of the connecting frame. The gear motor is arranged in a vertical state, a threaded rotating rod is arranged at the bottom of the gear motor, the threaded rotating rod is arranged vertically downwards, the length of the threaded rotating rod is larger than that of the insulator, and the outer wall of the threaded rotating rod is in threaded connection with a supporting plate; according to the utility model, the ring winding detection mechanism and the padlock mechanism are arranged, and the structure of the detection equipment is driven to rotate around the outer side of the insulator, so that the equipment for detecting the defects of the insulator can surround the outer side of the insulator to carry out comprehensive detection; and the condition of omission caused by incomplete insulator defect detection effect is avoided.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line maintenance technology, and more specifically, to an insulator defect detection device based on audio-visual fusion technology. Background Technology

[0002] An insulator is a device used to isolate the conductive parts of electrical equipment from the grounded parts or other conductive parts, thereby maintaining electrical insulation.

[0003] I. Definition and Function

[0004] An insulator is a special insulating component installed between conductors at different potentials or between a conductor and a grounding component. It can withstand voltage and mechanical stress. Primarily, it effectively blocks electrical connections between electrical devices through its high resistivity and low conductivity, ensuring safe and stable power transmission. Simultaneously, insulators also play a crucial role in mechanical support, supporting and securing electrical equipment such as conductors, ensuring their stable operation even in harsh environments.

[0005] II. Types and Classifications

[0006] Insulators come in many varieties and can be categorized into several types based on their application, structure, and materials. Common insulator types include suspension insulators, pin insulators, post insulators, composite insulators, polymer insulators, and glass insulators. Each type of insulator has its specific advantages and applications. For example, composite insulators, with their advantages of light weight, high strength, and excellent resistance to pollution flashover, have gradually replaced traditional porcelain insulators.

[0007] III. Principles and Structure

[0008] The basic principle of an insulator is its ability to prevent current from flowing between conductors or between a conductor and ground through unintended paths. Its construction typically consists of two main parts: the insulating component and the connecting hardware. The insulating component is the core of the insulator and is made of insulating materials such as ceramics, glass, and composite materials. The connecting hardware is used to secure the insulator to the electrical equipment, ensuring its stable and reliable operation.

[0009] IV. Application Areas

[0010] Insulators have a wide range of applications in power systems. They are widely used in overhead transmission lines, substations, power plants, and other power facilities to isolate and support electrical equipment, ensuring the safe and stable transmission of power. At the same time, insulators also have a certain environmental protection function, resisting harsh weather conditions and external erosion, protecting power facilities from damage.

[0011] V. Future Development

[0012] With the rapid development of the power industry and technological advancements, the performance of insulators is constantly being improved and perfected. The emergence of new materials, processes, and technologies has injected new vitality into the development of insulators. For example, smart insulators, by integrating sensors and monitoring technologies, achieve real-time monitoring and early warning functions for insulator status, further improving the safety and reliability of power systems. In the future, insulators will continue to play a vital role in power systems, contributing to the construction of a safer, more reliable, and greener power grid.

[0013] Modern transmission line and substation management places great emphasis on the degradation of composite insulators. Once insulation failure leads to a decline in the insulation performance of power equipment, it can easily trigger accidents such as insulation flashover, resulting in incalculable safety hazards and economic losses. Therefore, the proper operation of composite insulators helps ensure the safety and stability of the entire power system. In the context of the current construction of ultra-high voltage (UHV) projects, the West-to-East Power Transmission project, and a robust smart grid, there is a trend towards the large-scale deployment of composite insulators on transmission lines. The evaluation of composite insulator performance degradation and deterioration under complex environments is crucial. Strengthening composite insulator monitoring and degradation evaluation methods, and striving to eliminate all potential faults, are key to ensuring the normal operation of composite insulators and the stable operation of the power system.

[0014] The commonly used testing equipment and methods for insulators mainly include the following:

[0015] I. Testing Equipment

[0016] 1. Insulation resistance tester: Used to measure the insulation resistance value of insulators to determine whether their insulation performance is good. Common insulation resistance testers include digital insulation resistance testers and electronic megohmmeters.

[0017] 2. Infrared thermal imager: This method uses infrared thermal imaging technology to measure the temperature distribution on the surface of insulators to determine if there are problems such as localized overheating or abnormal temperatures. This method is particularly suitable for anti-pollution insulators coated with semiconductor glaze.

[0018] 3. Ultrasonic testing instrument: This instrument detects internal defects such as cracks and loosening by observing the propagation and reflection of ultrasonic waves within the insulator. Ultrasonic testing instruments offer the advantages of non-contact and non-destructive testing.

[0019] 4. Laser Doppler Vibration Meter: This method uses laser Doppler technology to measure the vibration center frequency of an insulator to determine if it has faults such as cracks. This method is particularly effective for detecting cracked insulators.

[0020] II. Detection Methods

[0021] 1. Visual inspection method: Inspect the appearance of the insulator with the naked eye to check for damage, dirt, etc. This method is simple and intuitive, but it can only find surface problems and cannot detect internal faults.

[0022] 2. Spark fork method: This method determines the insulation performance of an insulator by observing whether a discharge occurs when a spark fork comes into contact with it. This method is simple to operate, but its accuracy is affected by various factors.

[0023] 3. Small ball discharge method: This method analyzes the voltage distribution and insulation performance of an insulator by measuring the distance between small balls at both ends when they discharge. However, this method requires frequent adjustments to the ball distance and has a high error rate.

[0024] 4. Insulation resistance method: This method uses a current sensor to measure the leakage current flowing through the two ends of the insulator, and then transmits the data to an information processing center for centralized processing, thereby achieving remote measurement of the insulator. This method is more expensive, but the detection results are accurate and reliable.

[0025] In summary, traditional methods for inspecting insulators on transmission lines involve manual operation or using drones to bring the inspection equipment close to the outside of the insulator. However, due to the lack of existing technologies that can perform comprehensive, all-around inspections of the outside of the insulator, most current technologies can only approach the outside of the insulator directly. It is difficult to perform comprehensive inspections of the entire outside of the insulator by adapting to its length and condition. As a result, the detection of insulator defects is not comprehensive enough and is prone to omissions.

[0026] Chinese utility model patent CN202323076384.9 discloses a microwave inspection bracket for composite insulator defects. The bracket includes an insulator support connected to hardware via bolts. The hardware is used to mount the insulator to be inspected. A waveguide support is mounted on one side of the insulator support. The waveguide support is connected to a moving device, which in turn connects to two clamps. The clamps hold the waveguide. Moving the moving device on the waveguide support moves the waveguide held by the clamps simultaneously. This microwave inspection bracket for composite insulator defects allows the composite insulator to be mounted on the bracket. One clamp holds the transmitting waveguide, and the other clamps the receiving waveguide. Adjusting the positions of the two clamps ensures the transmitting and receiving waveguides are aligned. Adjusting the height of the moving device on the waveguide support causes the device to move the waveguides held by the two clamps simultaneously, ensuring the two waveguides are always aligned, thereby improving the inspection accuracy of the composite insulator.

[0027] Chinese utility model patent CN202323076327.0 discloses a microwave inspection bracket for porcelain insulator defects, comprising: a fixed frame, fittings on the fixed frame, the fittings fixing the inspection piece to the fittings via bolts, a moving device within the fixed frame, the moving device including a turntable, a track assembly connected to the turntable, and a clamp connected to the track assembly. The clamp is used to hold a transmitting waveguide and a receiving waveguide. Rotating the turntable drives the transmitting and receiving waveguides held in the clamp to rotate synchronously. The turntable is rotatably connected to a base via bearings. The track assembly includes horizontal and vertical guide rails. This microwave inspection bracket for porcelain insulator defects fixes the inspection piece to the fixed frame, clamps the transmitting and receiving waveguides, and rotates the turntable, causing the track assembly to rotate synchronously, ensuring that the two waveguides rotate at the same angle, thereby improving inspection accuracy.

[0028] Chinese utility model patent CN202120233107.6 discloses a defect insulator detection device based on leakage current, including a vehicle body, a camera assembly, and a cleaning assembly for cleaning the insulator. A scissor lift is vertically mounted on the vehicle body, and a lifting platform is located on top of the scissor lift. Both the camera assembly and the cleaning assembly are mounted on the lifting platform. The cleaning assembly includes two brush plates, with the bristles of both brush plates facing the insulator. A first slider is slidably connected to the lifting platform along the length of the vehicle body. A first drive assembly for moving the first slider is also provided on the lifting platform. A second drive assembly for moving the two brush plates closer to or further apart is provided on the first slider. In this application, the second drive assembly moves the two brush plates closer to or further apart to adjust the distance between the bristles, placing the two brush plates on opposite sides of the insulator string's length so that the bristles completely cover the insulator. This accommodates insulators of different diameters. The first drive assembly moves the two brush plates for more comprehensive cleaning of the insulator.

[0029] According to the patent specifications, all of the above patents can only detect insulator defects from a single angle and cannot achieve circumferential detection.

[0030] To address the aforementioned technical shortcomings, a solution is provided. Summary of the Invention

[0031] To overcome the aforementioned deficiencies of the prior art, this utility model provides an insulator defect detection device based on acoustic-image fusion technology. By setting up a circumferential detection mechanism and a padlock mechanism, the structure of the detection equipment is driven to rotate around the outside of the insulator. This allows the insulator defect detection device to perform comprehensive detection around the outside of the insulator, avoiding the situation where the detection effect of the insulator is not comprehensive enough and there are omissions, thus solving the problems mentioned in the background art.

[0032] To achieve the above objectives, this utility model provides the following technical solution: an insulator defect detection device based on audio-visual fusion technology, comprising a connecting frame, an insulator being disposed at the bottom of the connecting frame, and a loop detection mechanism and a padlock mechanism being disposed on the outer wall of the connecting frame;

[0033] The loop detection mechanism includes a reduction motor mounted on one side of the connecting frame. The reduction motor is vertically positioned, and a threaded rotating rod is located at the bottom of the reduction motor. The threaded rotating rod is vertically downward and its length is greater than that of the insulator. A support plate is threadedly connected to the outer wall of the threaded rotating rod. Two pulley shafts are rotatably mounted on one side of the support plate. A top tension belt is rotatably mounted on the outer wall of the two pulley shafts. The top tension belt is vertically positioned, and its outer wall is in contact with the outer wall of the insulator.

[0034] In a preferred embodiment, reciprocating threaded rods are fixedly installed on both sides of the pulley shaft. The two reciprocating threaded rods are arranged symmetrically to each other. The outer walls of the two reciprocating threaded rods are threaded together with a toothed plate. The toothed plate is slidably installed on the top of the support plate. The toothed plate is arranged in a horizontal state. A gear is meshed on one side of the toothed plate. The gear is rotatably installed on the top of the support plate. A toothed ring is meshed on the other side of the gear. The toothed ring is rotatably installed on the inner wall of the support plate. The toothed ring is arranged in a ring shape.

[0035] In a preferred embodiment, a belt ring plate is fixedly installed at the bottom of the toothed ring. The belt ring plate is rotatably installed on the inner wall of the support plate. The belt ring plate is arranged in a semi-circular shape and is arranged in a horizontal state. Ultrasonic detectors are fixedly installed on the top of both sides of the belt ring plate, and the two ultrasonic detectors are located on the outer walls of both sides of the insulator.

[0036] In a preferred embodiment, the padlock mechanism includes a retaining plate fixedly installed on the top of the geared motor. The retaining plate is horizontally positioned. An upper clamping plate is fixedly installed on one side of the retaining plate. The bottom of the upper clamping plate is in contact with the outer wall of the connecting frame. A plug rod is slidably installed on one side of the upper clamping plate. The plug rod is perpendicular to the upper clamping plate. A lower clamping plate is provided at the bottom of the plug rod. The lower clamping plate is fixedly installed at the bottom of the upper clamping plate. The lower clamping plate and the plug rod are staggered.

[0037] In a preferred embodiment, a pad is slidably mounted on the bottom of the upper clamping plate. The pad is L-shaped, and its outer wall is in contact with the outer wall of the connecting frame. One side of the pad is corresponding to the insertion rod. A support spring is fixedly mounted on one side of the pad and is fixedly mounted on the inner wall of the upper clamping plate.

[0038] The technical effects and advantages of this utility model are as follows:

[0039] This invention incorporates a circumferential detection mechanism and a padlock mechanism, which in turn cause the detection equipment to rotate around the outside of the insulator. This allows the equipment to perform comprehensive detection around the outside of the insulator, preventing omissions due to insufficient detection of insulator defects. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0041] Figure 2 This is a front view of the present invention.

[0042] Figure 3 This is a partial sectional view of the present invention.

[0043] Figure 4 This is a partial cross-sectional view of the padlock mechanism in this utility model.

[0044] Figure 5 This is a vertical sectional view of the padlock mechanism in this utility model.

[0045] The attached diagram is labeled as follows: 1. Connecting frame; 2. Insulator; 3. Circular detection mechanism; 31. Gear motor; 32. Threaded rotating rod; 33. Support plate; 34. Pulley shaft; 35. Top pull belt; 36. Reciprocating threaded rod; 37. Pull tooth plate; 38. Gear; 39. Gear ring; 310. Same belt ring plate; 311. Ultrasonic detector; 4. Padlock mechanism; 41. Fixing plate; 42. Upper clamping plate; 43. Insert rod; 44. Lower clamping plate; 45. Pad support plate; 46. Support spring. Detailed Implementation

[0046] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0047] Refer to the instruction manual appendix Figure 1 - Figure 5 An insulator defect detection device based on acoustic-image fusion technology, such as Figure 1 As shown, it includes a connecting frame 1, an insulator 2 is provided at the bottom of the connecting frame 1, and a loop detection mechanism 3 and a padlock mechanism 4 are provided on the outer wall of the connecting frame 1;

[0048] like Figure 2 and Figure 3As shown, the loop detection mechanism 3 includes a reduction motor 31 mounted on one side of the connecting frame 1. The reduction motor 31 is vertically mounted, and a threaded rotating rod 32 is mounted at the bottom of the reduction motor 31. The threaded rotating rod 32 is vertically downward and its length is greater than that of the insulator 2. A support plate 33 is threadedly connected to the outer wall of the threaded rotating rod 32. The threaded rotating rod 32 driven by the reduction motor 31 causes the support plate 33 to move synchronously on the outside of the insulator 2. Two pulley shafts 34 are rotatably mounted on one side of the support plate 33. A top tension belt 35 is rotatably mounted on the outer wall of the two pulley shafts 34. The top tension belt 35 is vertically mounted, and its outer wall is in contact with the outer wall of the insulator 2. As a result, the support plate 33 drives the two pulley shafts 34 and the top tension belt 35 to approach and contact the outer wall of the insulator 2.

[0049] like Figure 2 and Figure 3 As shown, reciprocating threaded rods 36 are fixedly installed on both sides of the pulley shaft 34. The two reciprocating threaded rods 36 are arranged symmetrically. When the two pulley shafts 34 and the top pull belt 35 move and rotate on the outer wall of the insulator 2, they drive the reciprocating threaded rods 36 on both sides to rotate synchronously. The outer walls of the two reciprocating threaded rods 36 are threadedly connected to a toothed plate 37. The toothed plate 37 is slidably installed on the top of the support plate 33. The toothed plate 37 is arranged in a horizontal state. A gear 38 is meshed on one side of the toothed plate 37. The gear 38 is rotatably installed on the top of the support plate 33. A toothed ring 39 is meshed on the other side of the gear 38. The toothed ring 39 is rotatably installed on the inner wall of the support plate 33. The toothed ring 39 is arranged in a ring shape. The reciprocating threaded rods 36 cause the toothed plate 37 to move back and forth and drive the gear 38 to rotate. In turn, the gear 38 drives the toothed ring 39 to reciprocate on the inner wall of the support plate 33.

[0050] like Figure 2 and Figure 3 As shown, a belt ring plate 310 is fixedly installed at the bottom of the toothed ring 39. The belt ring plate 310 is rotatably installed on the inner wall of the support plate 33. The belt ring plate 310 is arranged in a semi-circular shape and is horizontally positioned. Ultrasonic detectors 311 are fixedly installed on the top of both sides of the belt ring plate 310. The two ultrasonic detectors 311 are located on the outer walls of both sides of the insulator 2. The toothed ring 39 drives the belt ring plate 310 to rotate synchronously back and forth. That is, the belt ring plate 310 drives the ultrasonic detectors 311 on both sides to rotate back and forth around the outer walls of both sides of the insulator 2 to perform comprehensive detection, so as to avoid the situation that the detection of defects in the insulator 2 is not comprehensive enough and there will be omissions.

[0051] like Figure 4As shown, the padlock mechanism 4 includes a retaining plate 41 fixedly installed on the top of the geared motor 31. The retaining plate 41 is horizontally positioned, and an upper clamping plate 42 is fixedly installed on one side of the retaining plate 41. The bottom of the upper clamping plate 42 is in contact with the outer wall of the connecting frame 1. A plug rod 43 is slidably installed on one side of the upper clamping plate 42. By pushing the retaining plate 41, the geared motor 31 is driven to approach the outer wall of the connecting frame 1, and the retaining plate 41 drives the upper clamping plate 42 and the plug rod 43 to lock onto the top of the connecting frame 1. The insertion rod 43 and the upper clamping plate 42 are arranged perpendicularly to each other. The bottom of the insertion rod 43 is provided with a lower clamping plate 44, which is fixedly installed at the bottom of the upper clamping plate 42. The lower clamping plate 44 and the insertion rod 43 are arranged in an alternating manner. After the insertion rod 43 passes over the outer wall of the connecting frame 1, it moves down and inserts into the lower clamping plate 44. Thus, the upper clamping plate 42, the insertion rod 43 and the lower clamping plate 44 are arranged in an alternating manner on the outer wall of the connecting frame 1 to stabilize the geared motor 31 on one side of the connecting frame 1.

[0052] like Figure 4 and Figure 5 As shown, a pad plate 45 is slidably installed at the bottom of the upper clamping plate 42. The pad plate 45 is L-shaped, and its outer wall is in contact with the outer wall of the connecting frame 1. One side of the pad plate 45 is correspondingly arranged with the insertion rod 43. The pad plate 45 is located at the bottom of the insertion rod 43 to block it and prevent the insertion rod 43 from moving freely downward. A support spring 46 is fixedly installed on one side of the pad plate 45. The support spring 46 is fixedly installed on the inner wall of the upper clamping plate 42. When the upper clamping plate 42 is close to the outer wall of the connecting frame 1, the pad plate 45 at the bottom is squeezed by the outer wall of the connecting frame 1 and moves backward. Then, the outer wall of the pad plate 45 compresses the support spring 46 and contracts. At this time, the pad plate 45, which was originally located at the staggered position of the insertion rod 43, moves backward, so the insertion rod 43 can move freely downward without being restricted by the pad plate 45.

[0053] The working process and principle of this utility model are as follows:

[0054] First, by pushing the fixing plate 41, the reduction motor 31 is driven to approach the outer wall of the connecting frame 1. Then, the fixing plate 41 drives the upper clamping plate 42 and the insertion rod 43 to be clamped on the top of the connecting frame 1. At this time, the pad plate 45 is squeezed by the outer wall of the connecting frame 1 and moves backward. Then, the outer wall of the pad plate 45 compresses the support spring 46 and contracts. At this time, the pad plate 45, which was originally located at the staggered position of the insertion rod 43, moves backward. Then, the insertion rod 43 can move freely downward by gravity without being restricted by the pad plate 45. After the position of the insertion rod 43 passes the outer wall of the connecting frame 1, it moves freely downward and inserts into the lower clamping plate 44. Thus, the upper clamping plate 42, the insertion rod 43 and the lower clamping plate 44 are cross-combined on the outer wall of the connecting frame 1 to stabilize the reduction motor 31 on one side of the connecting frame 1.

[0055] Then, the threaded rotating rod 32 driven by the reduction motor 31 causes the support plate 33 to move synchronously on the outside of the insulator 2. The support plate 33 then drives the two pulley shafts 34 and the top pull belt 35 to approach and fit against the outer wall of the insulator 2. When the two pulley shafts 34 and the top pull belt 35 move and rotate on the outer wall of the insulator 2, they drive the reciprocating threaded rods 36 on both sides to rotate synchronously. The reciprocating threaded rods 36 cause the toothed plate 37 to move back and forth and drive the gear 38 to rotate. Then, the gear 38 drives the toothed ring 39 to rotate back and forth on the inner wall of the support plate 33. The toothed ring 39 drives the same belt ring plate 310 to rotate back and forth synchronously. That is, the same belt ring plate 310 drives the ultrasonic detectors 311 on both sides to rotate back and forth around the outer walls of both sides of the insulator 2 to perform comprehensive detection, so as to avoid the situation that the detection of defects in the insulator 2 is not comprehensive enough and there will be omissions.

[0056] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0057] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0058] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insulator defect detection device based on acoustic-image fusion technology, comprising a connecting frame (1), wherein an insulator (2) is disposed at the bottom of the connecting frame (1), characterized in that: The outer wall of the connecting frame (1) is provided with a loop detection mechanism (3) and a padlock mechanism (4).

2. The insulator defect detection device based on acoustic-image fusion technology according to claim 1, characterized in that: The loop detection mechanism (3) includes a speed reduction motor (31) set on one side of the connecting frame (1). The speed reduction motor (31) is set in a vertical position, and a threaded rotating rod (32) is provided at the bottom of the speed reduction motor (31).

3. The insulator defect detection device based on acoustic-image fusion technology according to claim 2, characterized in that: The threaded rotating rod (32) is set vertically downward. The length of the threaded rotating rod (32) is greater than the length of the insulator (2). The outer wall of the threaded rotating rod (32) is threaded with a support plate (33).

4. The insulator defect detection device based on acoustic-image fusion technology according to claim 3, characterized in that: Two pulley shafts (34) are rotatably mounted on one side of the pallet (33). A top pull belt (35) is rotatably mounted on the outer wall of the two pulley shafts (34). The top pull belt (35) is set in a vertical position, and the outer wall of the top pull belt (35) is in contact with the outer wall of the insulator (2).

5. The insulator defect detection device based on acoustic-image fusion technology according to claim 4, characterized in that: The pulley shaft (34) is fixedly installed on both sides with reciprocating threaded rods (36), the two reciprocating threaded rods (36) are arranged symmetrically to each other, and the outer walls of the two reciprocating threaded rods (36) are connected to a toothed plate (37) by a common thread.

6. The insulator defect detection device based on acoustic-image fusion technology according to claim 5, characterized in that: The toothed plate (37) is slidably mounted on the top of the tray (33). The toothed plate (37) is set in a horizontal state. A gear (38) is meshed on one side of the toothed plate (37). The gear (38) is rotatably mounted on the top of the tray (33). A toothed ring (39) is meshed on the other side of the gear (38). The toothed ring (39) is rotatably mounted on the inner wall of the tray (33). The toothed ring (39) is set in a ring shape.

7. The insulator defect detection device based on acoustic-image fusion technology according to claim 6, characterized in that: The bottom of the toothed ring (39) is fixedly installed with a belt ring plate (310). The belt ring plate (310) is rotatably installed on the inner wall of the support plate (33). The belt ring plate (310) is semi-circular and horizontal. Ultrasonic detectors (311) are fixedly installed on the top of both sides of the belt ring plate (310). The two ultrasonic detectors (311) are located on the outer walls of both sides of the insulator (2).

8. The insulator defect detection device based on acoustic-image fusion technology according to claim 7, characterized in that: The padlock mechanism (4) includes a retaining plate (41) fixedly installed on the top of the geared motor (31). The retaining plate (41) is set in a horizontal state, and an upper clamping plate (42) is fixedly installed on one side of the retaining plate (41).

9. The insulator defect detection device based on acoustic-image fusion technology according to claim 8, characterized in that: The bottom of the upper clamping plate (42) is in contact with the outer wall of the connecting frame (1). A plug rod (43) is slidably installed on one side of the upper clamping plate (42). The plug rod (43) is perpendicular to the upper clamping plate (42). A lower clamping plate (44) is provided at the bottom of the plug rod (43). The lower clamping plate (44) is fixedly installed at the bottom of the upper clamping plate (42). The lower clamping plate (44) and the plug rod (43) are staggered.

10. An insulator defect detection device based on acoustic-image fusion technology according to claim 9, characterized in that: A pad (45) is slidably installed at the bottom of the upper clamping plate (42). The pad (45) is L-shaped. The outer wall of the pad (45) is in contact with the outer wall of the connecting frame (1). One side of the pad (45) is corresponding to the insertion rod (43). A support spring (46) is fixedly installed on one side of the pad (45). The support spring (46) is fixedly installed on the inner wall of the upper clamping plate (42).

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