An insulator defect detection device based on microwave detection method

Abstract

This invention discloses an insulator defect detection device based on microwave detection, relating to the field of insulator detection. The device includes: a guide rail defining a circular detection path for detecting insulators under test; a conveyor mechanism including a conveyor belt disposed on the guide rail, with multiple carrier units spaced apart on the conveyor belt, the carrier units being movable along the circular detection path under the drive of the conveyor belt, each carrier unit having a mounting interface for fixing the insulator under test; and a microwave detection unit including at least one set of microwave transmitting antennas and microwave receiving antennas, the microwave transmitting antennas and microwave receiving antennas being arranged opposite each other to form a microwave detection area on the circular detection path for the insulator under test to pass through, the microwave detection area being used to perform defect detection on the passing insulators. This invention enables continuous insulator detection with high efficiency.

Description

Technical Field

[0001] This invention relates to the field of insulator testing, and more specifically to an insulator defect detection device based on microwave testing. Background Technology

[0002] Insulators are components in power systems that provide electrical insulation and mechanical support, and are widely used in transmission lines and substations. During long-term operation, they may develop internal defects due to environmental factors, such as core rod cracks and sheath delamination, which can seriously affect power grid safety. Therefore, regular and efficient defect detection of insulators is a crucial step in ensuring the reliable operation of power equipment. Microwave testing, as an effective offline non-destructive testing method, identifies internal defects by analyzing the reflection or transmission characteristics of microwave signals by the insulator, offering advantages such as high detection accuracy and non-contact operation.

[0003] Currently, insulator defect detection based on microwave testing methods typically employs fixed, single-station testing equipment. This equipment mainly consists of a bracket for suspending individual insulators and a microwave generating device. During testing, the operator manually suspends the insulator on the bracket and keeps it stationary within the testing area. After signal acquisition and analysis, the insulator is manually removed and replaced with the next component to be tested.

[0004] However, the aforementioned equipment can only accommodate and test one insulator at a time, resulting in a very limited number of tests that can be completed per unit time when faced with a large number of insulator testing tasks. This consumes a lot of manpower and time, seriously affecting the testing efficiency. Summary of the Invention

[0005] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides an insulator defect detection device based on microwave detection, which can achieve continuous insulator detection with high efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An insulator defect detection device based on microwave detection method, comprising: The guide rail defines a circular detection path for detecting the insulator under test. The conveying mechanism includes a conveyor belt disposed on the guide rail, and multiple carrier units are spaced apart on the conveyor belt. The multiple carrier units can move along the circular detection path under the drive of the conveyor belt. Each carrier unit is provided with a mounting interface for fixing the insulator to be tested. A microwave detection unit includes at least one set of microwave transmitting antennas and microwave receiving antennas, which are arranged opposite to each other to form a microwave detection area on the circular detection path for the insulator to be tested to pass through. The microwave detection area is used to perform defect detection on the insulator to be tested that passes through.

[0007] In this application, the insulator defect detection device allows for the direct placement of multiple insulators to be tested onto multiple support units. These insulators and support units move along a circular detection path, driven by a conveyor belt, and sequentially pass through the microwave detection area. This enables continuous detection of multiple insulators without the need for manual removal and replacement of each insulator, thus improving detection efficiency. Through the coordination of guide rails, the circular detection path defined by the guide rails, the conveyor belt, and the detection area, the discrete single-piece detection mode of existing technologies is transformed into a continuous assembly line operation mode, reducing the average time for single-piece detection and improving detection efficiency.

[0008] Optionally, the carrying unit includes a carrying slider and an insulator mounting component. The carrying slider is detachably mounted on the conveyor belt, and the mounting position of the carrying slider on the conveyor belt is adjustable to change the spacing between adjacent carrying units. The insulator mounting component is detachably mounted on the carrying slider, and the mounting interface is formed on the insulator mounting component.

[0009] The slider's position on the conveyor belt is adjustable, allowing for flexible adjustment of the spacing between adjacent insulators. This enables operators to adjust the insulator density on the conveyor line according to the specific size of the insulators and testing requirements, thus improving the versatility of the testing device.

[0010] Optionally, the insulator mounting component includes a first type of mounting component and / or a second type of mounting component, wherein the first type of mounting component and the second type of mounting component are configured to be interchangeably mounted on the bearing slider; the mounting interface of the first type of mounting component is constructed as a cylinder that matches the fitting at one end of the insulator to be tested, so that the insulator to be tested is suspended vertically and passes through the microwave detection area; the mounting interface of the second type of mounting component is configured as a hook shape, and the second type of mounting component is configured to be used in pairs to support both ends of the insulator to be tested respectively, so that the insulator to be tested passes through the microwave detection area horizontally.

[0011] By designing two interchangeable insulator mounts and selecting and replacing them according to testing requirements, the same device can be adapted to test insulators of various lengths without modification. This solves the problem that existing devices cannot test long insulators due to their fixed structure, expands the application range of a single device, and reduces equipment investment costs.

[0012] Optionally, the carrier slider is provided with an outwardly protruding mounting plate, and the mounting plate is provided with a first threaded hole; multiple squares are extended on the outer surface of the conveyor belt, and the squares are provided with second threaded holes corresponding to the first threaded holes.

[0013] Optionally, the guide rail includes a body and a guide protrusion, the guide protrusion extending circumferentially along the bottom of the body; a guide groove adapted to the cross-sectional shape of the guide protrusion is provided on one side of the carrying slider, the guide protrusion fitting into the guide groove to allow the carrying slider to move along the guide rail.

[0014] Optionally, the conveying mechanism further includes a drive motor, a driving wheel, and a driven wheel. The conveyor belt has a closed-loop structure and is sleeved on the driving wheel and the driven wheel. The drive motor drives the driving wheel to rotate, thereby driving the conveyor belt and the driven wheel to move.

[0015] Optionally, the conveyor belt is constructed as an annular chain located within the guide rail, and the inner side of the annular chain meshes with the driving wheel and the driven wheel for transmission.

[0016] Optionally, the microwave detection unit further includes a liftable support, which includes a lifting rod with scale markings, and the microwave transmitting antenna and the microwave receiving antenna are both mounted on the end of the lifting rod.

[0017] Optionally, the bottom of the guide rail is connected to several legs.

[0018] Optionally, the conveyor belt has an adjustable operating speed and is configured to allow the insulator under test to remain for a preset time when passing through the microwave detection area.

[0019] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of the present invention will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of the present invention. In addition, each of these features, elements and components appearing in the following text and drawings is a plurality of, and different symbols or numbers are used for convenience of representation, but all represent parts with the same or similar construction or function. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the insulator defect detection device in an embodiment of the present invention when detecting a vertically placed insulator; Figure 2 This is a partial structural schematic diagram of the insulator defect detection device in an embodiment of the present invention; Figure 3This is a schematic diagram illustrating the cooperation between the transmission belt and the load-bearing unit in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the first type of mount in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the second type of mount in an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure of the insulator defect detection device in an embodiment of the present invention when detecting a horizontally placed insulator.

[0021] The components include: 1. Guide rail; 11. Body; 12. Guide protrusion; 2. Conveying mechanism; 21. Conveyor belt; 211. Block; 2111. Second threaded hole; 22. Driving wheel; 23. Driven wheel; 3. Bearing unit; 31. Bearing slider; 311. Mounting piece; 3111. First threaded hole; 312. Guide groove; 32. Insulator mounting component; 321. Mounting interface; 322. First type mounting component; 323. Second type mounting component; 4. Microwave detection unit; 41. Microwave transmitting antenna; 42. Microwave receiving antenna; 5. Support leg; 6. Insulator under test. Detailed Implementation

[0022] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain the present invention and should not be construed as limiting the invention.

[0023] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this patent. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0024] Example: like Figures 1 to 3 As shown, this embodiment provides an insulator defect detection device based on microwave detection, including: a guide rail 1, which defines a circular detection path for detecting the insulator 6 to be tested; a conveying mechanism 2, which includes a conveyor belt 21 disposed on the guide rail 1, with multiple carrier units 3 spaced apart on the conveyor belt 21, the multiple carrier units 3 being able to move along the circular detection path under the drive of the conveyor belt 21, each carrier unit 3 being provided with a mounting interface 321 for fixing the insulator 6 to be tested; and a microwave detection unit 4, which includes at least one set of microwave transmitting antennas 41 and microwave receiving antennas 42, the microwave transmitting antennas 41 and microwave receiving antennas 42 being arranged opposite to each other to form a microwave detection area on the circular detection path for the insulator 6 to be tested to pass through, the microwave detection area being used to perform defect detection on the insulator 6 that passes through.

[0025] In this embodiment, the guide rail 1 defines a circular detection path, which provides a guiding reference for the movement of the insulator 6 under test. Multiple carrier units 3 are spaced apart on the conveyor belt 21, each carrier unit 3 having an interface 321 for fixing the insulator 6 under test. The conveyor belt 21 is configured to be movable, allowing all carrier units 3 to move along the circular detection path. The microwave detection unit 4 includes at least one set of microwave transmitting antennas 41 and microwave receiving antennas 42 arranged opposite to each other. The microwave transmitting antennas 41 and 42 cooperate to form a microwave detection area for detecting internal defects in the insulator within a predetermined section of the circular detection path. Specifically, the transmitting antenna emits microwaves that can penetrate the insulator medium. If a defect exists inside the insulator, the dielectric properties (such as dielectric constant and loss factor) at the defect location will change abruptly. The microwave signal received by the receiving antenna 42 will then change due to the presence of the defect. By analyzing the difference between the received and transmitted signals using a computer system and comparing them with the signal characteristics of a standard defect-free sample, it can be determined whether the insulator under test has internal defects. In other embodiments, the microwave transmitting antenna 41 and the microwave receiving antenna 42 may also be configured as 3 groups, 4 groups, etc.

[0026] It should be noted that the circular detection path defined by guide rail 1 does not mean that the circular detection path is entirely located on the physical guide rail 1. Guide rail 1 is a specific physical structure whose function is to guide and constrain the movement of the bearing unit 3. The circular detection path, on the other hand, refers to the actual movement trajectory of the moving bearing unit 3 and the insulator 6 under test. When the bearing unit 3 moves on guide rail 1, the movement path of its mounting interface 321 may deviate from guide rail 1 (for example, the mounting interface 321 may extend outward). In this case, the actual movement path of the insulator (i.e., the detection path) is a loop located above or below guide rail 1, not entirely on the physical guide rail 1. The movement path of the insulator 6 and the bearing unit 3 is constrained only by the guiding structure on guide rail 1, hence the term "circular detection path defined by guide rail 1".

[0027] The detection process of this defect detection device is as follows: At the loading station, the operator fixes the insulator 6 to be tested onto the mounting interface 321 of the carrying unit 3. The conveying mechanism 2 drives the conveyor belt 21, which in turn moves all the carrying units 3 along the circular detection path. When the carrying unit 3 carrying the insulator moves to the microwave detection area, the microwave detection unit 4 scans the insulator to obtain its internal status signal. After the detection is completed, the carrying unit 3 continues to move to the unloading station, where the operator removes the tested insulator. Simultaneously, the unloaded carrying unit 3 returns to the loading station via the conveyor belt 21, waiting to mount the next insulator. Through this process, continuous, efficient, and automated detection of insulators is achieved.

[0028] Existing detection devices typically use linear detection paths, inevitably leading to backtracking or resetting processes during insulator transport, interrupting the detection process and preventing continuous operation. This application addresses this by establishing a circular detection path, allowing the insulator-carrying unit 3 to be continuously driven along this path for unidirectional, cyclical movement. Therefore, the insulator loading, testing, and unloading processes can be spatially separated and run in parallel across different sections of the circular detection path, enabling continuous testing. Furthermore, if a linear detection path (i.e., a linear guide rail 1) is used, to achieve high efficiency, the linear guide rail 1 must be very long to accommodate multiple insulators 6 to be tested. This results in a large equipment footprint, contradicting the typically limited testing space. The circular detection path maximizes space utilization within a limited plane, achieving a compact layout. Moreover, the ends of long linear guide rails 1 are prone to sagging or vibration, affecting transport accuracy and interfering with microwave detection, while the circular closed detection path offers better stability.

[0029] The carrying unit 3 includes a carrying slider 31 and an insulator mounting member 32. The carrying slider 31 is detachably mounted on the conveyor belt 21 and the mounting position of the carrying slider 31 on the conveyor belt 21 is adjustable to change the spacing between adjacent carrying units 3. The insulator mounting member 32 is detachably mounted on the carrying slider 31 and the mounting interface 321 is formed on the insulator mounting member 32.

[0030] In this embodiment, the carrier slider 31 can be detachably mounted on the conveyor belt 21 via screw holes or slots to connect the carrier slider 31 and the conveyor belt 21, thereby causing the insulator 6 under test to move when the conveyor belt 21 moves. The insulator mounting member 32 is detachably mounted on the carrier slider 31, making the insulator mounting member 32 independent of the carrier slider 31. The mounting interface 321 for contacting and fixing the insulator 6 under test is formed on the insulator mounting member 32, and the shape of the mounting interface 321 determines the support method of the insulator 6 under test. Specifically, according to the size of the insulator 6 under test (such as length and skirt diameter) or the interval requirements during testing, the operator can flexibly adjust the installation position of the carrier slider 31 on the conveyor belt 21, that is, slide along the length direction of the conveyor belt 21 and re-fix the carrier slider 31, thereby setting the interval distance between adjacent carrier units 3 (and the insulator 6 under test). The insulator mounting component 32 can be installed onto the bearing slider 31 via threaded connection, snap-fit, or magnetic attraction. In other embodiments, the insulator mounting component 32 can also be fixedly connected to the bearing slider 31. Furthermore, depending on the testing requirements, the mounting interface 321 of the insulator mounting component 32 can be configured with different types to adapt to different insulators 6 under test. By removing one type of insulator mounting component 32 from the bearing slider 31 and replacing it with another type, different insulators 6 under test can be tested. In summary, by adjusting the installation position of the bearing slider 31, the safety interval requirements of insulators 6 of different sizes under test can be flexibly adapted, improving the versatility and flexibility of the testing device. By replacing the standardized insulator mounting component 32 module, the same device can quickly switch between different testing modes such as "vertical suspension" and "horizontal support" without modification, solving the problem of a single device being compatible with the testing of insulators of different lengths and expanding the application range of the equipment.

[0031] like Figure 1 , Figure 4 as well as Figure 5 As shown, the insulator mounting component 32 includes a first type mounting component 322 and / or a second type mounting component 323. The first type mounting component 322 and the second type mounting component 323 are configured to be interchangeably mounted on the bearing slider 31. The mounting interface 321 of the first type mounting component 322 is constructed as a cylinder that matches the fitting at one end of the insulator 6 under test, so that the insulator 6 under test is suspended vertically and passes through the microwave detection area. The mounting interface 321 of the second type mounting component 323 is configured as a hook shape, and the second type mounting component 323 is configured to be used in pairs to support both ends of the insulator 6 under test respectively, so that the insulator 6 under test passes through the microwave detection area horizontally.

[0032] In this embodiment, the first type of mounting member 322 and the second type of mounting member 323 are configured to share a mounting interface located on the carrier slider 31, so that they can be interchangeably mounted on the carrier slider 31, which facilitates the improvement of the versatility of the detection device. The mounting interface 321 of the first type of mounting member 322 is cylindrical, so as to fit or engage with a cylindrical fitting (such as an iron cap or steel foot) at one end of the insulator, which is suitable for mounting insulators with shorter lengths. The operator inserts or suspends the fitting at one end of the insulator into the mounting interface 321 of the first type of mounting member 322. During the conveyor belt 21, the insulator naturally droops due to gravity and remains vertical as it passes through the microwave detection area, and the microwave beam can scan along its axis. Figure 1 As shown, the detection device equipped with the first type of mounting component 322 can be used to detect vertically placed insulators. The mounting interface 321 of the second type of mounting component 323 is configured in a hook shape, and the second type of mounting components 323 are configured for use in pairs, meaning two identical second type of mounting components 323 need to work together. The paired hook-shaped structures support the insulator from both ends, i.e., the operator lifts a longer insulator, placing or suspending its ends on the two hook-shaped interfaces respectively. During transmission, the second type of mounting component 323 remains horizontal as it passes through the microwave detection area, and the microwave beam can scan along its radial direction or at a specific angle. Figure 6 As shown, the detection device equipped with the second type of mounting component 323 can be used to detect horizontally placed insulators. The second type of mounting component 323 is suitable for insulators with longer mounting lengths. Specifically, the operator selects and installs the corresponding first type of mounting component 322 or second type of mounting component 323 according to the length specifications of the insulator 6 to be tested. When it is necessary to switch the detection mode (i.e., whether the insulator is horizontal or vertical), only the different type of mounting component needs to be replaced. There is no need to modify the main structure of the device, which can efficiently detect various insulators of different lengths, thus expanding the detection range and application scenarios of a single device.

[0033] It should be noted that, generally, the length of the insulator mounted on the second type of mounting member 323 should be less than the turning radius of the circular detection path to ensure that the insulator can smoothly pass through the turning points of the detection path. Alternatively, the mounting member can be hinged to the bearing slider 31, and a linkage mechanism can be provided between the two pairs of second type of mounting members 323, so that when the distance between the two bearing sliders 31 changes at the bend, the upper ends of the two mounting members can tilt synchronously and maintain a constant distance between their lower support points. Alternatively, when it is necessary to inspect extra-long insulators, two pairs of second type of mounting members 323 can be set in the long straight section of the circular detection path, and the microwave detection area can also be set in this long straight section. The extra-long insulator is placed horizontally on the pair of second type of mounting members 323, and the conveying mechanism 2 is started to move the insulator horizontally within the long straight section and through the microwave detection area set in this straight section to complete the defect scanning. After the inspection is completed, before the insulator reaches the turning point, it is removed from the hook by the operator or the auxiliary unloading mechanism. Afterward, the unloaded second type of mount 323 can pass through the curve with the conveyor belt 21.

[0034] The carrier slider 31 is provided with an outwardly protruding mounting plate 311, and the mounting plate 311 is provided with a first threaded hole 3111; multiple squares 211 are extended on the outer surface of the conveyor belt 21, and the squares 211 are provided with second threaded holes 2111 corresponding to the first threaded holes 3111.

[0035] In this embodiment, the carrier slider 31 is provided with an outwardly protruding mounting piece 311, that is, the mounting piece 311 is an extension structure of the carrier slider 31, and the mounting piece 311 has a first threaded hole 3111. Multiple spaced squares 211 extend from the outer surface of the conveyor belt 21, each square 211 having a second threaded hole 2111. The second threaded holes 2111 are constructed to correspond to the first threaded holes 3111, that is, their hole diameters, hole spacing, thread specifications, etc., are matched so that fasteners (such as bolts) can pass through both threaded holes simultaneously and tighten, thereby fixing the carrier slider 31 to the conveyor belt 21. The operator moves the carrier slider 31 along the conveyor belt 21 according to the required insulator spacing distance, aligning the first threaded hole 3111 on the carrier slider 31 with the second threaded hole 2111 on the selected square 211 on the conveyor belt 21. Fasteners are sequentially passed through the aligned first threaded hole 3111 and second threaded hole 2111. The carrier slider 31 and block 211 are pressed together under the preload of the fasteners, thus fixing the carrier slider 31 at a specific position on the conveyor belt 21. When it is necessary to change the spacing between adjacent insulators, the operator simply loosens the fasteners, releases the lock between the mounting plate 311 and block 211, and then slides the carrier slider 31 along the conveyor belt 21 to the new target position and fixes it.

[0036] The guide rail 1 includes a body 11 and a guide protrusion 12. The guide protrusion 12 extends circumferentially along the bottom of the body 11. A guide groove 312 adapted to the cross-sectional shape of the guide protrusion 12 is provided on one side of the carrying slider 31. The guide protrusion 12 is fitted into the guide groove 312 so that the carrying slider 31 can move along the guide rail 1.

[0037] In this embodiment, the guide rail 1 includes a body 11 and a guide protrusion 12, which is a rigid raised track extending circumferentially along the bottom of the body 11. A guide groove 312 is provided on one side of the carrying slider 31. The cross-sectional shape of the guide groove 312 is adapted to match the cross-sectional shape of the guide protrusion 12. For example, if the guide protrusion 12 is T-shaped, the guide groove 312 is a T-shaped groove; if the guide protrusion 12 is dovetail-shaped, the guide groove 312 is a dovetail groove. In the assembled state, the guide protrusion 12 is fitted into the guide groove 312, allowing the carrying slider 31 to move only along the guide protrusion 12. In this embodiment, the guiding function is integrated into the bottom of the body 11, eliminating the need for other complex guiding structures, simplifying the mechanical structure, and reducing costs.

[0038] The conveying mechanism 2 also includes a drive motor, a drive wheel 22 and a driven wheel 23. The conveyor belt 21 has a closed-loop structure and is sleeved on the drive wheel 22 and the driven wheel 23. The drive motor drives the drive wheel 22 to rotate, thereby driving the conveyor belt 21 and the driven wheel 23 to move.

[0039] In this embodiment, the driving wheel 22 is directly connected to the output shaft of the drive motor (or via a coupling, reducer, etc.), and the drive motor can control the rotation of the driving wheel 22. The conveyor belt 21 is constructed as a closed-loop structure (i.e., a seamless annular belt). This closed-loop conveyor belt 21 is fitted onto the driving wheel 22 and the driven wheel 23. The driven wheel 23 is spaced apart from the driving wheel 22. When the driving wheel 22 rotates, it drives the conveyor belt 21 to move, while the rotation of the driven wheel 23 is driven by the friction or meshing of the conveyor belt 21. The transmission between the driving wheel 22, the conveyor belt 21, and the driven wheel 23 is smooth, providing a predictable moving speed for the insulator.

[0040] The conveyor belt 21 is constructed as an annular chain located within the guide rail 1, and the inner side of the annular chain meshes with the driving wheel 22 and the driven wheel 23 for transmission.

[0041] In this embodiment, the conveyor belt 21 is constructed as a ring chain, and the inner surface of the ring chain has multiple teeth for meshing and transmission with the driving wheel 22 and the driven wheel 23. That is, the surfaces of the driving wheel 22 and the driven wheel 23 also have specific tooth profiles. The ring chain is housed in the space formed at the bottom of the body 11 of the guide rail 1.

[0042] The microwave detection unit 4 also includes a liftable support, which includes a lifting rod with scale markings, and both the microwave transmitting antenna 41 and the microwave receiving antenna 42 are installed at the end of the lifting rod.

[0043] In this embodiment, a height-adjustable bracket supports the microwave transmitting antenna 41 and the microwave receiving antenna 42, and the microwave transmitting antenna 41 and the microwave receiving antenna 42 are respectively mounted on different height-adjustable brackets so that they can be raised and lowered independently. The lifting rod is specifically constructed as a rod-shaped member whose height can be adjusted vertically, and the lifting rod is marked with scale markings to represent different heights. The operator manually or by motor-driven lifting rod moves the lifting rod according to the size (length) of the insulator 6 to be tested and the testing requirements. During adjustment, the operator refers to the scale markings on the lifting rod to position the antenna at the target height. For vertically suspended insulators, adjusting the antenna height allows it to be aligned with the core rod area most prone to defects in the insulator. For horizontally placed extra-long insulators, adjusting the antenna height allows it to be aligned with the central axis of the insulator.

[0044] The bottom of the guide rail 1 is connected to several legs 5.

[0045] In this embodiment, the support leg 5 is constructed as a vertical column. The upper end of the support leg 5 is fixed to the lower surface or side structure of the guide rail 1 by welding, bolting, or flange connection to form a stable support. In other embodiments, the support leg 5 can also be constructed as a height-adjustable structure (e.g., with a threaded lifting structure, anchor bolts, or washer assembly) to change the working height of the entire device, accommodating operators of different heights or interfacing with other production line equipment. This is prior art and will not be described in detail here.

[0046] The conveyor belt 21 has an adjustable operating speed and is configured to allow the insulator 6 under test to remain for a preset time when passing through the microwave detection area.

[0047] In this embodiment, the running speed of the conveyor belt 21 is adjustable, meaning the speed of the drive motor of the conveying mechanism 2 is adjustable. Specifically, the drive motor can be controlled using components such as a frequency converter, servo driver, or DC speed controller. Additionally, the detection device should include a control unit. When the carrying unit 3 carries the insulator to the microwave detection area, the control unit controls the insulator to remain stationary for a period of time. After the detection is completed, the conveyor belt 21 restarts, removing the insulator and sending in the next one. In other embodiments, the insulator 6 to be tested may not need to stop when passing through the microwave detection area, as long as the microwave detection unit 4 completes the detection of the insulator 6.

[0048] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A device for detecting defects of an insulator based on a microwave detection method, characterized by, include: The guide rail defines a circular detection path for detecting the insulator under test. The conveying mechanism includes a conveyor belt disposed on the guide rail, and multiple carrier units are spaced apart on the conveyor belt. The multiple carrier units can move along the circular detection path under the drive of the conveyor belt. Each carrier unit is provided with a mounting interface for fixing the insulator to be tested. A microwave detection unit includes at least one set of microwave transmitting antennas and microwave receiving antennas, which are arranged opposite to each other to form a microwave detection area on the circular detection path for the insulator to be tested to pass through. The microwave detection area is used to perform defect detection on the insulator to be tested that passes through.

2. The insulator defect detection apparatus according to claim 1, characterized by The carrying unit includes a carrying slider and an insulator mounting component. The carrying slider is detachably mounted on the conveyor belt, and the mounting position of the carrying slider on the conveyor belt is adjustable to change the spacing between adjacent carrying units. The insulator mounting component is detachably mounted on the carrying slider, and the mounting interface is formed on the insulator mounting component.

3. The insulator defect detection apparatus according to claim 2, characterized by The insulator mounting component includes a first type of mounting component and / or a second type of mounting component, wherein the first type of mounting component and the second type of mounting component are configured to be interchangeably mounted on the bearing slider; the mounting interface of the first type of mounting component is constructed as a cylinder that matches the fitting at one end of the insulator to be tested, so that the insulator to be tested is suspended vertically and passes through the microwave detection area; The mounting interface of the second type of mounting device is configured as a hook shape, and the second type of mounting device is configured to be used in pairs to support the two ends of the insulator under test respectively, so that the insulator under test passes through the microwave detection area in a horizontal direction.

4. The insulator defect detection apparatus according to claim 2, characterized by The bearing slider is provided with an outwardly protruding mounting plate, and the mounting plate is provided with a first threaded hole; multiple squares are extended on the outer surface of the conveyor belt, and the squares are provided with second threaded holes corresponding to the first threaded holes.

5. The insulator defect detection apparatus according to claim 2, characterized by The guide rail includes a body and a guide protrusion, the guide protrusion extending circumferentially along the bottom of the body; a guide groove adapted to the cross-sectional shape of the guide protrusion is provided on one side of the bearing slider, the guide protrusion fitting into the guide groove to allow the bearing slider to move along the guide rail.

6. The insulator defect detection apparatus according to claim 1, wherein The conveying mechanism also includes a drive motor, a drive wheel, and a driven wheel. The conveyor belt has a closed-loop structure and is sleeved on the drive wheel and the driven wheel. The drive motor drives the drive wheel to rotate, thereby driving the conveyor belt and the driven wheel to move.

7. The insulator defect detection apparatus according to claim 6, wherein The conveyor belt is constructed as an annular chain located within the guide rail, and the inner side of the annular chain meshes with the driving wheel and the driven wheel for transmission.

8. The insulator defect detection apparatus according to claim 1, wherein The microwave detection unit also includes a liftable support, which includes a lifting rod with scale markings. The microwave transmitting antenna and the microwave receiving antenna are both mounted on the end of the lifting rod.

9. The insulator defect detection apparatus according to claim 1, wherein The bottom of the guide rail is connected to several legs.

10. The insulator defect detection apparatus according to claim 1, characterized by The conveyor belt has an adjustable operating speed and is configured to allow the insulator under test to remain for a preset time when passing through the microwave detection area.

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