A power distribution cabinet for smart grids

Abstract

This invention relates to the field of smart grid device technology, specifically to a smart grid distribution cabinet, comprising a main body of the distribution cabinet, a moving mechanism for moving and detecting cables is provided on the inner side of the main body of the distribution cabinet, a small air pump is installed on the inner side of the moving mechanism, a detection mechanism for circling and detecting cables is provided on the inner side of the moving mechanism, a visible infrared thermal imager is installed on the inner side of the detection mechanism, and a baffle is installed on the inner side of the detection mechanism. Driven by a synchronous belt, the second C-shaped plate of the detection mechanism moves in a circular motion around the cable. Combined with the visible infrared thermal imager and multiple CCD cameras, it can perform comprehensive detection of the entire circumference surface and heat distribution of a single cable without blind spots, solving the deficiency of traditional fixed-point detection which can only cover a local area.

Description

Technical Field

[0001] This invention relates to the field of smart grid device technology, specifically to a power distribution cabinet for smart grids. Background Technology

[0002] As smart grids upgrade towards automation and unmanned operation, distribution cabinets, as core nodes for power distribution and signal transmission, experience a significant increase in internal cable density and must withstand high loads for extended periods. This places stringent demands on equipment status monitoring, maintenance efficiency, and operational stability. However, existing smart grid distribution cabinets still face numerous technical bottlenecks in practical applications, making it difficult to meet the refined operation and maintenance needs of smart grids.

[0003] Existing detection methods rely on manual labor or fixed equipment. Fixed equipment only covers a local area and cannot scan the entire circumference, easily missing circumferential defects in the insulation layer. Ambient light interferes with thermal imaging data, and dust adhesion leads to misjudgments. Furthermore, the lack of a targeted separation structure makes it difficult to locate individual cables in densely tangled cables, creating blind spots. Detection and cleaning are independent processes requiring separate manual operation, resulting in high maintenance costs and the disconnect between processes affecting detection accuracy. Traditional detection equipment uses fixed tracks, which cannot adapt to lateral cable deviations and are difficult to track along the entire path. Dust prevention relies on fixed filters, which are prone to clogging and cannot be cleaned in a timely manner, and heat dissipation depends on passive ventilation, making it impossible for the two to work together. Most equipment is "fault-reactive," lacking early warnings such as cable overheating and insulation damage, which does not meet the high reliability requirements of smart grids. Therefore, we propose a distribution cabinet for smart grids. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes a distribution cabinet for smart grids.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a distribution cabinet for smart grids, including a distribution cabinet body, a moving mechanism for moving and detecting a line is provided on the inner side of the distribution cabinet body, a small air pump is installed on the inner side of the moving mechanism, a detection mechanism for surrounding the detection line is provided on the inner side of the moving mechanism, a visible infrared thermal imager is installed on the inner side of the detection mechanism, a baffle is installed on the inner side of the detection mechanism, an air inlet is opened on one side of the distribution cabinet body near the moving mechanism, and an air outlet is opened on the other side of the distribution cabinet body.

[0006] Preferably, the moving mechanism includes a vertical component for vertical movement and a lateral component for lateral movement.

[0007] Preferably, the vertical component includes an I-shaped plate fixedly connected to the main body of the power distribution cabinet, a movable bracket slidably connected to the outer side of the I-shaped plate, a first motor installed at the front end of the movable bracket, a first gear rotatably connected to the inner side of the movable bracket, the outer side of the output shaft of the first motor being fixedly connected to the first gear, a first rack meshing with the outer side of the first gear, and one side of the first rack being fixedly connected to the I-shaped plate.

[0008] Preferably, a limiting frame is fixedly connected to one side of the movable bracket, a threaded rod is rotatably connected to the inner side of the limiting frame, a second motor is installed on the other side of the limiting frame, the output shaft of the second motor is fixedly connected to the threaded rod, an installation block is threadedly connected to the outer side of the threaded rod, the installation block is slidably connected to the inner side of the limiting frame, a first electric telescopic rod is installed at the upper end of the installation block, the lower end of the installation block is fixedly connected to the housing of the small air pump, a dust filter cartridge is fixedly connected to the front end of the installation block, and the rear end of the dust filter cartridge is fixedly connected to the output port of the small air pump.

[0009] Preferably, the transverse assembly includes a fixed rotating shaft fixedly connected to the rear end of the output shaft of the first motor. An eccentric plate is fixedly connected to the rear end of the fixed rotating shaft. A connecting rod is rotatably connected to the outer side of the eccentric plate. A crank is rotatably connected to the inner side of the connecting rod. An air pump is rotatably connected to one side of the crank. Two cleaning brushes are fixedly connected to one end of the air pump. A hose is fixedly connected to the other end of the air pump. The other end of the hose is fixedly connected to the inlet of a small air pump. A support rod is rotatably connected to the outer side of the air pump. The lower end of the support rod is fixedly connected to a movable bracket.

[0010] Preferably, the detection mechanism includes a measuring component for moving the detection line, and the detection mechanism also includes a toggle component for disengaging other lines.

[0011] Preferably, the measuring component includes a connecting plate fixedly connected to the output shaft of the first electric telescopic rod, a third motor is installed at the lower end of the connecting plate, a first sprocket is rotatably connected to the upper end of the connecting plate, the output shaft of the third motor is fixedly connected to the first sprocket, and a first C-shaped plate is fixedly connected to the rear end of the connecting plate.

[0012] Preferably, the upper end of the first C-shaped plate is rotatably connected to three second sprockets via a rotating shaft, and the outer sides of the three second sprockets are rotatably connected to a synchronous belt. The inner side of the synchronous belt is rotatably connected to the first sprocket, and the outer side of the synchronous belt is provided with a flexible rubber coating.

[0013] Preferably, the upper end of the first C-shaped plate is rotatably connected to four limiting rollers via a rotating shaft. A limiting plate is fixedly connected to the outer side of each limiting roller. The outer sides of the four limiting rollers are rotatably connected to a second C-shaped plate. The outer side of the second C-shaped plate is in contact with the timing belt. The upper end of the second C-shaped plate is fixedly connected to the outer shell of the visible infrared thermal imager and the baffle, respectively. Multiple CCD cameras are provided on the inner wall of the second C-shaped plate. A flexible brush is provided at the lower end of the second C-shaped plate.

[0014] Preferably, the actuating assembly includes two symmetrical mounting boxes. The upper end of the mounting box is fixedly connected to the first C-shaped plate. A second gear is rotatably connected to the inner side of the mounting box via a rotating shaft. A second rack is meshed with the outer side of the second gear. A second electric telescopic rod is installed on the inner side of the mounting box. The output shaft of the second electric telescopic rod is fixedly connected to the second rack. A third rack is meshed with the outer side of the second gear. A pull rod is fixedly connected to one end of the third rack. The outer side of the pull rod is slidably connected to the mounting box. A V-shaped flexible rubber rod is fixedly connected to the other end of the pull rod.

[0015] Compared with the prior art, the present invention provides a power distribution cabinet for smart grids, which has the following advantages:

[0016] 1. Driven by a synchronous belt, the second C-shaped plate of the detection mechanism moves in a circular motion around the cable. Combined with a visible infrared thermal imager and multiple CCD cameras, it can perform comprehensive, blind-spot-free detection of the entire circumference surface and heat distribution of a single cable, overcoming the limitation of traditional fixed-point detection which only covers a localized area. Simultaneously, the vertical components of the moving mechanism drive the detection mechanism along the cable's length, achieving a full-length scan from the top to the bottom of the cable, ensuring that the overall line condition is monitored. A baffle shields the visible infrared thermal imager from interference from complex ambient light within the distribution cabinet, ensuring the accuracy of thermal imaging data. A flexible brush at the lower end of the second C-shaped plate cleans dust from the cable surface before detection, preventing impurities from affecting the CCD camera's accuracy in identifying insulation damage and aging, thus solving the problem of misjudgments caused by dust cover in traditional detection. The V-shaped flexible rubber rod of the actuating component can remove surrounding cables, allowing the detection mechanism to independently surround the target cable, avoiding obstruction or interference from surrounding cables, solving the problem of accurately locating a single cable when multiple cables are densely arranged in traditional detection methods.

[0017] 2. This system, from pushing the detection mechanism closer to the cable with the first electric telescopic rod, to the agitator pushing aside surrounding cables, to the measuring component circling and detecting, and the moving mechanism driving the detection mechanism along the cable, requires no manual intervention. This solves the problems of low efficiency and strong subjectivity in traditional manual inspections, making it particularly suitable for the operation and maintenance needs of unattended substations in smart grids. The cleaning brush of the horizontal component automatically cleans the air inlet as the moving mechanism moves vertically, while a small air pump sucks dust into the filter cartridge through an air extraction cylinder and hose, achieving integrated detection and cleaning. The flexible brush of the detection mechanism simultaneously cleans the cable surface during detection, preventing dust accumulation from affecting equipment lifespan. Compared to the existing technology that separates cleaning and detection, this solution reduces the separate cleaning process and lowers maintenance costs. The horizontal component of the moving mechanism drives the mounting block to move via a threaded rod, adapting to changes in the lateral direction of the cable in real time. The vertical component achieves stable lifting and lowering through gear and rack transmission, ensuring the detection mechanism always conforms to the cable path. This adaptive capability solves the problem of traditional fixed-track detection equipment being unable to adapt to complex cable layouts.

[0018] 3. Real-time monitoring of cable temperature using a visual infrared thermal imager allows for early detection of localized overheating caused by poor contact or overload; a CCD camera promptly identifies insulation damage, preventing leakage or short circuits. Compared to the existing "fault-based repair" model, this solution achieves "fault-prevention early warning," significantly reducing the risk of power grid outages. A small air pump drives the air inside the distribution cabinet to circulate through the air inlet and outlet, while a dust filter intercepts dust, preventing dust from adhering to electrical components and reducing insulation performance. Airflow circulation also lowers the cabinet temperature, solving the problem of shortened equipment lifespan due to heat accumulation and dust in traditional distribution cabinets. The V-shaped flexible rubber rod of the moving component and the flexible brush of the detection mechanism are made of flexible materials, preventing scratching or squeezing damage to the cable insulation during operation. This solves the problem of easy cable wear in traditional mechanical testing equipment, extending cable lifespan. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the moving mechanism of the present invention;

[0022] Figure 4 This is a cross-sectional view of a portion of the moving mechanism of the present invention. Figure 1 ;

[0023] Figure 5 This is a cross-sectional view of a portion of the moving mechanism of the present invention. Figure 2 ;

[0024] Figure 6 This is a cross-sectional view of a portion of the moving mechanism of the present invention. Figure 3 ;

[0025] Figure 7 This is a schematic diagram of the overall structure of the detection mechanism of the present invention;

[0026] Figure 8 This is a cross-sectional schematic diagram of the overall structure of the detection mechanism of the present invention;

[0027] Figure 9 This is a cross-sectional view of part of the detection mechanism of the present invention. Figure 1

[0028] Figure 10 This is a cross-sectional view of part of the detection mechanism of the present invention. Figure 2 .

[0029] In the diagram: 1. Main body of the distribution cabinet; 2. Moving mechanism; 21. Vertical component; 211. I-beam plate; 212. Moving bracket; 213. First motor; 214. First gear; 215. First rack; 216. Limiting frame; 217. Threaded rod; 218. Second motor; 219. Mounting block; 2110. First electric telescopic rod; 2111. Dust filter cartridge; 22. Horizontal component; 221. Fixed shaft; 222. Eccentric plate; 223. Connecting rod; 224. Crank; 225. Air extraction pump; 226. Cleaning brush; 227. Hose; 228. Support rod; 3. Detection mechanism; 31. Measuring component; 311. Connecting plate; 312. Third motor; 313. First sprocket; 314. First C-shaped plate; 315. Second sprocket; 316. Synchronous belt; 317. Second C-shaped plate; 318. Limiting roller; 319. CCD camera; 32. Actuating component; 321. Mounting box; 322. Second gear; 323. Second rack; 324. Second electric telescopic rod; 325. Third rack; 326. Pull rod; 4. Visual infrared thermal imager; 5. Baffle; 6. Small air pump. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] The following electrical components are all electrically connected via an external PLC controller.

[0032] Please see Figures 1-10A smart grid distribution cabinet includes a cabinet body 1, a moving mechanism 2 for moving and detecting a circuit is provided on the inner side of the cabinet body 1, a small air pump 6 is installed on the inner side of the moving mechanism 2, a detection mechanism 3 for circling and detecting the circuit is provided on the inner side of the moving mechanism 2, a visible infrared thermal imager 4 is installed on the inner side of the detection mechanism 3, a baffle 5 is installed on the inner side of the detection mechanism 3, an air inlet is provided on one side of the cabinet body 1 near the moving mechanism 2, and an air outlet is provided on the other side of the cabinet body 1.

[0033] In this embodiment, the moving mechanism 2 includes a vertical component 21 for vertical movement and a horizontal component 22 for lateral movement.

[0034] Specifically, the vertical component 21 is used to drive the detection mechanism 3, the small air pump 6 and other components to move vertically to adapt to the detection needs of cables of different heights; the horizontal component 22 is used to cooperate with the cleaning operation of the air inlet and to assist in adjusting the horizontal position of the detection mechanism 3 to improve the detection flexibility.

[0035] In this embodiment, the vertical component 21 includes an I-shaped plate 211 fixedly connected to the main body 1 of the power distribution cabinet. A movable bracket 212 is slidably connected to the outer side of the I-shaped plate 211. A first motor 213 is installed at the front end of the movable bracket 212. A first gear 214 is rotatably connected to the inner side of the movable bracket 212. The outer side of the output shaft of the first motor 213 is fixedly connected to the first gear 214. A first rack 215 is meshed with the outer side of the first gear 214. One side of the first rack 215 is fixedly connected to the I-shaped plate 211.

[0036] Specifically, the I-shaped plate 211 provides a sliding track and mounting base for the movable support 212, ensuring the stability of the vertical movement of the movable support 212; the movable support 212 serves as a load-bearing structure, used to install components such as the detection mechanism 3 and the small air pump 6, and to drive the overall movement of these components; the first motor 213 provides power for the vertical movement; the first gear 214 meshes with the first rack 215, converting the rotational motion of the first motor 213 into the vertical linear motion of the movable support 212 along the I-shaped plate 211; the first rack 215 is fixed on the I-shaped plate 211, providing meshing support for the first gear 214, ensuring the movement accuracy of the movable support 212.

[0037] In this embodiment, a limiting frame 216 is fixedly connected to one side of the movable bracket 212. A threaded rod 217 is rotatably connected to the inner side of the limiting frame 216. A second motor 218 is installed on the other side of the limiting frame 216. The output shaft of the second motor 218 is fixedly connected to the threaded rod 217. An installation block 219 is threadedly connected to the outer side of the threaded rod 217. The installation block 219 is slidably connected to the inner side of the limiting frame 216. A first electric telescopic rod 2110 is installed at the upper end of the installation block 219. The lower end of the installation block 219 is fixedly connected to the outer shell of the small air pump 6. A dust filter cartridge 2111 is fixedly connected to the front end of the installation block 219. The rear end of the dust filter cartridge 2111 is fixedly connected to the output port of the small air pump 6.

[0038] Specifically, the limiting frame 216 restricts the movement direction of the mounting block 219, ensuring its linear movement and providing mounting support for the threaded rod 217; the threaded rod 217 rotates under the drive of the second motor 218, driving the mounting block 219 to move laterally through threaded engagement; the second motor 218 provides power for the lateral movement of the mounting block 219; the mounting block 219 is used to mount the first electric telescopic rod 2110, the small air pump 6, and the dust filter cartridge 2111, and drives these components to move laterally synchronously; the first electric telescopic rod 2110 adjusts the distance between the detection mechanism 3 and the cable by telescopic adjustment, allowing the detection mechanism 3 to move closer to or further away from the cable; the small air pump 6 generates negative pressure to suck in dust and promote air circulation inside the cabinet; the dust filter cartridge 2111 filters the sucked-in dust, collects impurities, and discharges clean air, preventing dust from contaminating the components inside the cabinet.

[0039] In this embodiment, the transverse component 22 includes a fixed rotating shaft 221 fixedly connected to the rear end of the output shaft of the first motor 213. An eccentric plate 222 is fixedly connected to the rear end of the fixed rotating shaft 221. A connecting rod 223 is rotatably connected to the outer side of the eccentric plate 222. A crank 224 is rotatably connected to the inner side of the connecting rod 223. An air pump 225 is rotatably connected to one side of the crank 224. Two cleaning brushes 226 are fixedly connected to one end of the air pump 225. A hose 227 is fixedly connected to the other end of the air pump 225. The other end of the hose 227 is fixedly connected to the inlet of the small air pump 6. A support rod 228 is rotatably connected to the outer side of the air pump 225. The lower end of the support rod 228 is fixedly connected to the movable bracket 212.

[0040] Specifically, the fixed rotating shaft 221 transmits the power of the first motor 213 to the eccentric plate 222, causing it to rotate synchronously; the eccentric plate 222 converts the rotational motion into the reciprocating oscillation of the connecting rod 223 through its eccentric design; the connecting rod 223 transmits the motion of the eccentric plate 222 to the crank 224, driving the suction cylinder 225 to move; the crank 224 connects the connecting rod 223 and the suction cylinder 225, converting the oscillation into the back-and-forth reciprocating motion of the suction cylinder 225; the suction cylinder 225 serves as an airflow channel, driving the cleaning brush 226 to move and transporting the sucked-in dust; the cleaning brush 226 oscillates with the suction cylinder 225, cleaning the dust in the air inlet; the hose 227 connects the suction cylinder 225 to the small air pump 6, transporting the cleaned dust to the dust filter cartridge 2111; the support rod 228 supports the suction cylinder 225, restricting its movement trajectory and ensuring that the cleaning brush 226 stably cleans the air inlet.

[0041] In this embodiment, the detection mechanism 3 includes a measuring component 31 for moving the detection line, and the detection mechanism 3 also includes a toggle component 32 for disengaging other lines.

[0042] Specifically, the measuring component 31 is used to perform circumferential thermal imaging detection and surface condition monitoring of the cable to achieve accurate identification of cable faults; the tossing component 32 is used to push aside other cables around the cable to be tested, providing space for the measuring component 31 to surround the cable and avoiding interference from surrounding cables in the detection process.

[0043] In this embodiment, the measuring component 31 includes a connecting plate 311 fixedly connected to the output shaft of the first electric telescopic rod 2110. A third motor 312 is installed at the lower end of the connecting plate 311, and a first sprocket 313 is rotatably connected to the upper end of the connecting plate 311. The output shaft of the third motor 312 is fixedly connected to the first sprocket 313, and a first C-shaped plate 314 is fixedly connected to the rear end of the connecting plate 311.

[0044] Specifically, the connecting plate 311 connects the first electric telescopic rod 2110 with other components of the measuring assembly 31, transmits power and provides an installation base; the third motor 312 provides power for the rotation of the second C-shaped plate 317; the first sprocket 313 rotates under the drive of the third motor 312, and drives the second sprocket 315 to rotate through the synchronous belt 316; the first C-shaped plate 314 serves as the main frame of the measuring assembly 31 and is used to install components such as the second sprocket 315 and the limiting roller 318, and its opening design facilitates the entry of cables into the surrounding area.

[0045] In this embodiment, the upper end of the first C-shaped plate 314 is rotatably connected to three second sprockets 315 via a rotating shaft. The outer sides of the three second sprockets 315 are rotatably connected to a synchronous belt 316. The inner side of the synchronous belt 316 is rotatably connected to the first sprocket 313. The outer side of the synchronous belt 316 is provided with a flexible rubber coating.

[0046] Specifically, the second sprocket 315 supports the synchronous belt 316 and changes its transmission direction, cooperating with the first sprocket 313 to achieve stable transmission of the synchronous belt 316; the synchronous belt 316 transmits the power of the first sprocket 313 to the second C-shaped plate 317, causing it to rotate around the cable; the flexible rubber coating increases the friction between the synchronous belt 316 and the second C-shaped plate 317, ensuring reliable power transmission and preventing slippage.

[0047] In this embodiment, the upper end of the first C-shaped plate 314 is rotatably connected to four limiting rollers 318 via a rotating shaft. A limiting plate is fixedly connected to the outer side of the limiting rollers 318. The outer side of the four limiting rollers 318 is rotatably connected to a second C-shaped plate 317. The outer side of the second C-shaped plate 317 is in contact with the synchronous belt 316. The upper end of the second C-shaped plate 317 is fixedly connected to the outer shell of the visible infrared thermal imager 4 and the baffle 5, respectively. Multiple CCD cameras 319 are provided on the inner wall of the second C-shaped plate 317. A flexible brush is provided at the lower end of the second C-shaped plate 317.

[0048] Specifically, the limiting roller 318 supports the second C-shaped plate 317 and reduces friction during its rotation, while the limiting plate restricts the movement trajectory of the second C-shaped plate 317; the limiting plate prevents the second C-shaped plate 317 from shifting during rotation, ensuring its relative position with the first C-shaped plate 314 remains stable; the second C-shaped plate 317 serves as the mounting carrier for the detection component, rotating around the cable under the drive of the synchronous belt 316 to achieve full circumferential detection; the visible infrared thermal imager 4 detects the heat distribution of the cable to determine if there is an overheating fault; the baffle 5 blocks ambient light to avoid interfering with the detection accuracy of the visible infrared thermal imager 4; the CCD camera 319 captures images of the cable surface to detect whether the insulation layer is damaged or aged; the flexible brush rotates with the second C-shaped plate 317 to clean dust from the cable surface and the detection area, ensuring the detection effect.

[0049] In this embodiment, the actuating assembly 32 includes two symmetrical mounting boxes 321. The upper end of the mounting box 321 is fixedly connected to the first C-shaped plate 314. The inner side of the mounting box 321 is rotatably connected to the second gear 322 via a rotating shaft. The outer side of the second gear 322 is meshed with the second rack 323. The inner side of the mounting box 321 is equipped with the second electric telescopic rod 324. The output shaft of the second electric telescopic rod 324 is fixedly connected to the second rack 323. The outer side of the second gear 322 is meshed with the third rack 325. One end of the third rack 325 is fixedly connected to the pull rod 326. The outer side of the pull rod 326 is slidably connected to the mounting box 321. The other end of the pull rod 326 is fixedly connected to the V-shaped flexible rubber rod.

[0050] Specifically, the mounting box 321 provides installation space and support for the components of the actuating assembly 32; the second gear 322, by meshing with the second rack 323 and the third rack 325, changes the direction of movement, thereby realizing the extension and retraction of the pull rod 326; the second rack 323 moves under the drive of the second electric telescopic rod 324, driving the second gear 322 to rotate; the second electric telescopic rod 324 provides power to the actuating assembly 32, driving the second rack 323 to move; the third rack 325 moves under the drive of the second gear 322, driving the pull rod 326 to extend and retract; the pull rod 326 connects the third rack 325 to the V-shaped flexible rubber rod, transmitting power and adjusting the position of the V-shaped flexible rubber rod; the V-shaped flexible rubber rod opens or retracts under the drive of the pull rod 326, clearing away other cables around the cable to be tested, avoiding interference with the test, and the flexible material can prevent damage to the cable insulation layer.

[0051] Working principle: During use, the first electric telescopic rod 2110 is activated, its output shaft extends and drives the detection mechanism 3 to approach the designated cable inside the main body 1 of the distribution cabinet; during the approach to the cable, the second electric telescopic rod 324 is activated, its output shaft pushes the second rack 323 to move horizontally inside the mounting box 321, the second rack 323 meshes with the second gear 322, driving the second gear 322 to rotate, which in turn drives the third rack 325, which meshes with it, to extend out of the mounting box 321, the third rack 325 drives the pull rod 326 to move synchronously, causing the V-shaped... The flexible rubber rod opens to both sides of the cable to be tested, pushing aside any cables wrapped around or close to it, leaving space for the testing mechanism 3 to surround it. After the surrounding cables are pushed aside, the first electric telescopic rod 2110 continues to extend, driving the first C-shaped plate 314 to move towards the cable to be tested through the connecting plate 311, so that the cable enters its inner side through the opening of the first C-shaped plate 314 and is surrounded by the first C-shaped plate 314 and the second C-shaped plate 317. Subsequently, the second electric telescopic rod 324 retracts, driving the actuation component 32 to reset as a whole, and the V-shaped flexible rubber rod retracts to avoid interfering with subsequent testing.

[0052] The third motor 312 is started, and its output shaft drives the first sprocket 313 to rotate. The first sprocket 313 drives the three second sprockets 315 to rotate synchronously through the synchronous belt 316. When the synchronous belt 316 rotates, its outer flexible rubber coating is tightly attached to the outer side of the second C-shaped plate 317, generating friction. This causes the second C-shaped plate 317 to move in a circle along the first C-shaped plate 314 under the constraint of the limiting roller 318 and the limiting plate. During this process, the visible infrared thermal imager 4 at the upper end of the second C-shaped plate 317 is protected from ambient light interference by the baffle 5 and performs full-circumferential heat distribution detection on the surrounded single cable. At the same time, multiple CCD cameras 319 on the inner wall of the second C-shaped plate 317 take pictures of the cable surface from different angles to detect whether the insulation layer is damaged or aged. The flexible brush at the lower end moves in a circle to clean the cable surface and the detection area of ​​the visible infrared thermal imager 4, which can keep the cable clean to extend its service life and prevent dust from affecting the detection accuracy. At this time, the small air pump 6 is started, and negative pressure is generated at its input port. The dust particles that fall off during the cleaning process are sucked in by the airflow. After being filtered by the dust filter cartridge 2111, the dust is collected in the cartridge, and clean air is discharged from the output port, realizing the internal air circulation of the main body 1 of the power distribution cabinet and avoiding heat accumulation.

[0053] After completing the circumferential inspection of a single cable segment, the first motor 213 is started. Its output shaft drives the first gear 214 to rotate. The first gear 214 meshes with the first rack 215 on the I-beam plate 211, driving the moving bracket 212 to move vertically along the I-beam plate 211. This, in turn, drives the inspection mechanism 3 to move synchronously along the cable length, enabling the visible infrared thermal imager 4 and the CCD camera 319 to perform full-length inspection of the cable, ensuring the overall normal operation of the line.

[0054] If the lateral direction of the cable needs to be adjusted during the testing process, the second motor 218 is started. Its output shaft drives the threaded rod 217 to rotate inside the limit frame 216. The threaded rod 217 is threadedly engaged with the mounting block 219. Under the guidance of the limit frame 216, the mounting block 219 drives the testing mechanism 3 to move linearly along the limit frame 216, realizing real-time tracking of the lateral path of the cable. After the testing of a single cable is completed, the third motor 312 reverses to reset the measuring component 31, and the second C-shaped plate 317 returns to its initial position. The first electric telescopic rod 2110 retracts, causing the testing mechanism 3 to be misaligned with the cable. Then, the second motor 218 drives the threaded rod 217 to move the testing mechanism 3 to the position of other cables to be tested, and the above testing process is repeated.

[0055] While the first motor 213 drives the moving bracket 212 to move vertically, the fixed rotating shaft 221 at the rear end of its output shaft rotates synchronously, causing the eccentric plate 222 to make a circular motion. The eccentric plate 222 pushes the connecting rod 223 to swing back and forth through the eccentric structure. The connecting rod 223 drives the crank 224 to move, causing the air pump 225 to move back and forth under the support and limit of the support rod 228. This causes the two cleaning brushes 226 at the end of the air pump 225 to swing back and forth synchronously, cleaning the air inlet of the main body of the distribution cabinet 1. The dust that is swept off is sucked into the dust filter cartridge 2111 and collected by the air pump 225 and the hose 227 under the negative pressure of the small air pump 6. This realizes that the air inlet cleaning and dust collection are carried out simultaneously, avoiding dust from falling onto the internal electrical components and causing pollution.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A distribution cabinet for smart grids, comprising a main body, characterized in that: The main body of the power distribution cabinet is provided with a moving mechanism for moving the detection line. A small air pump is installed inside the moving mechanism. A detection mechanism for surrounding the detection line is provided inside the moving mechanism. A visible infrared thermal imager is installed inside the detection mechanism. A baffle is installed inside the detection mechanism. An air inlet is opened on one side of the main body of the power distribution cabinet near the moving mechanism. An air outlet is opened on the other side of the main body of the power distribution cabinet. The moving mechanism includes a vertical component for vertical movement and a horizontal component for lateral movement. The horizontal component includes a fixed rotating shaft fixedly connected to the rear end of the output shaft of the first motor. An eccentric plate is fixedly connected to the rear end of the fixed rotating shaft. A connecting rod is rotatably connected to the outer side of the eccentric plate. A crank is rotatably connected to the inner side of the connecting rod. An air pump is rotatably connected to one side of the crank. Two cleaning brushes are fixedly connected to one end of the air pump. A hose is fixedly connected to the other end of the air pump. The other end of the hose is fixedly connected to the inlet of a small air pump. The detection mechanism includes a measuring component for moving the detection line. The measuring component includes a connecting plate fixedly connected to the output shaft of the first electric telescopic rod. A first C-shaped plate is fixedly connected to the rear end of the connecting plate. Four limiting rollers are rotatably connected to the upper end of the first C-shaped plate via a rotating shaft. A second C-shaped plate is rotatably connected to the outer sides of the four limiting rollers. The outer side of the second C-shaped plate is in contact with the synchronous belt. The upper end of the second C-shaped plate is fixedly connected to the outer shell of the visible infrared thermal imager and the baffle, respectively. Multiple CCD cameras are provided on the inner wall of the second C-shaped plate. A flexible brush is provided at the lower end of the second C-shaped plate. The detection mechanism also includes a toggle assembly for disengaging other lines. The toggle assembly includes two symmetrical mounting boxes. The upper end of the mounting box is fixedly connected to the first C-shaped plate. The inner side of the mounting box is rotatably connected to a second gear via a rotating shaft. The outer side of the second gear is meshed with a second rack. The inner side of the mounting box is equipped with a second electric telescopic rod. The output shaft of the second electric telescopic rod is fixedly connected to the second rack. The outer side of the second gear is meshed with a third rack. One end of the third rack is fixedly connected to a pull rod, and the other end of the pull rod is fixedly connected to a V-shaped flexible rubber rod.

2. The distribution cabinet for a smart grid according to claim 1, characterized in that: The vertical component includes an I-shaped plate fixedly connected to the main body of the power distribution cabinet. A movable bracket is slidably connected to the outer side of the I-shaped plate. A first motor is installed at the front end of the movable bracket. A first gear is rotatably connected to the inner side of the movable bracket. The outer side of the output shaft of the first motor is fixedly connected to the first gear. A first rack is meshed with the outer side of the first gear. One side of the first rack is fixedly connected to the I-shaped plate.

3. A power distribution cabinet for a smart grid according to claim 2, characterized in that: A limiting frame is fixedly connected to one side of the movable bracket. A threaded rod is rotatably connected to the inner side of the limiting frame. A second motor is installed on the other side of the limiting frame. The output shaft of the second motor is fixedly connected to the threaded rod. A mounting block is threadedly connected to the outer side of the threaded rod. The mounting block is slidably connected to the inner side of the limiting frame. A first electric telescopic rod is installed at the upper end of the mounting block. The lower end of the mounting block is fixedly connected to the housing of the small air pump. A dust filter cartridge is fixedly connected to the front end of the mounting block. The rear end of the dust filter cartridge is fixedly connected to the output port of the small air pump.

4. A power distribution cabinet for a smart grid according to claim 1, characterized in that: A support rod is rotatably connected to the outside of the air extraction cylinder, and the lower end of the support rod is fixedly connected to the movable bracket.

5. A power distribution cabinet for a smart grid according to claim 1, characterized in that: A third motor is installed at the lower end of the connecting plate, and a first sprocket is rotatably connected to the upper end of the connecting plate. The output shaft of the third motor is fixedly connected to the first sprocket.

6. A power distribution cabinet for a smart grid according to claim 1, characterized in that: The upper end of the first C-shaped plate is rotatably connected to three second sprockets via a rotating shaft. The outer sides of the three second sprockets are rotatably connected to a synchronous belt. The inner side of the synchronous belt is rotatably connected to the first sprocket, and the outer side of the synchronous belt is provided with a flexible rubber coating.

7. A power distribution cabinet for a smart grid according to claim 1, characterized in that: A limiting plate is fixedly connected to the outer side of the limiting roller.

8. A power distribution cabinet for a smart grid according to claim 1, characterized in that: The outer side of the pull rod is slidably connected to the mounting box.

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