Self-propelled high-voltage cable on-line monitoring device

Abstract

The present application relates to the technical field of cable monitoring, in particular to a self-propelled high-voltage cable online monitoring device. The device comprises a machine shell, a rotating shell is fixedly connected to the slider in the electric slide rail on the machine shell, a water absorption shell is fixedly connected to the slider of the electric slide rail on the rotating shell, a monitoring shell is fixedly connected between the sliders in the electric slide rails on the mirror image distributed water absorption shells, mirror image distributed sliders are slidingly connected to the monitoring shell, the sliders on the monitoring shell are slidingly connected to a first rotating rod which is slidingly connected to the machine shell, and a straightening wheel is fixedly connected to the first rotating rod in the monitoring shell. The present application can straighten the curved cable which freely falls by the cooperation of the mirror image distributed straightening wheels, prevent the curved cable from affecting the monitoring result, improve the monitoring accuracy of the device, thereby reducing the workload of subsequent fault diagnosis and preventing misjudgment of faults.

Description

Technical Field

[0001] This invention relates to the field of cable monitoring technology, and in particular to a self-propelled online monitoring device for high-voltage cables. Background Technology

[0002] Electromagnetic monitoring of cables is a technology used to monitor the status of cable systems. It focuses on the electromagnetic field around the cable to identify potential problems such as partial discharge, cable damage, and insulation aging, so that maintenance personnel can understand the working status of the cable in real time. Some cables are in a free-falling, bent state under normal conditions. When a cable bends, the shape of the magnetic field around it may change, which will cause the signal pattern detected by the electromagnetic sensor to change, making the analysis results inaccurate. When the cable bends, stress concentration may also occur at the bend, leading to partial discharge. These partial discharge signals can interfere with electromagnetic detection, making fault diagnosis more complicated and even leading to misjudgment of cable faults, which will affect subsequent work. Summary of the Invention

[0003] To overcome the drawback that freely hanging, bent cables can cause problems with electromagnetic monitoring results, this invention provides a straightenable, self-propelled online monitoring device for high-voltage cables.

[0004] The technical implementation scheme of the present invention is as follows: A self-propelled high-voltage cable online monitoring device includes a housing. Equivalently spaced and mirror-distributed first fixed frames are fixed to the outer side of the housing. A first electric rotating shaft is arranged between the equidistantly distributed first fixed frames. A rotating wheel is fixed to the first electric rotating shaft. Mirror-distributed electric slide rails are arranged inside the housing. A rotating shell is fixed to a slider within the electric slide rails on the housing. Electric slide rails are arranged on opposite sides of the mirror-distributed rotating shells. A water-absorbing shell is fixed to the slider of the electric slide rail on the rotating shell. Electric slide rails are arranged on opposite sides of the mirror-distributed water-absorbing shells. Electric slide rails are installed on the mirror-distributed water-absorbing shells. A monitoring shell is fixedly connected to the sliders within the sliding rail. A mirror-distributed fixing plate is fixedly connected to the inner side of the monitoring shell. A mirror-distributed monitoring arc plate is rotatably connected between the mirror-distributed fixing plates. The monitoring shell is slidably connected to the mirror-distributed sliders. A first rotating rod is slidably connected to the housing via the sliders on the monitoring shell. A tension spring is provided between the first rotating rod and the adjacent slider. A straightening wheel located inside the monitoring shell is fixedly connected to the first rotating rod. The monitoring shell is provided with a straightening mechanism for straightening the cable and a positioning mechanism for ensuring the cable monitoring position. A water-blocking mechanism for removing water is provided on the water-absorbing shell.

[0005] Preferably, each of the first fixed frames, which are mirror-distributed on one side, is fixedly connected with an electric push rod. The housing is slidably connected with equidistant and mirror-distributed first sliding frames. The telescopic end of the electric push rod is fixedly connected to the adjacent first sliding frame. The mirror-distributed first sliding frames are rotatably connected with a fastening wheel.

[0006] Preferably, the correction mechanism includes mirror-distributed power slide rails, all of which are fixedly connected to the monitoring housing. The sliders in the mirror-distributed power slide rails are all fixedly connected to a second sliding frame, and the mirror-distributed first rotating rods are all limitedly engaged with the second sliding frame.

[0007] Preferably, the positioning mechanism includes a first sliding rod slidably connected to the monitoring housing, a spring being provided between the first sliding rod and the monitoring housing, a rack being provided on the side of the first sliding rod away from the mirror-distributed first rotating rod, a positioning wheel being rotatably connected on the side of the first sliding rod close to the mirror-distributed first rotating rod, a second rotating rod being rotatably connected to the monitoring housing via a mounting plate, a gear being provided on the second rotating rod, the gear on the second rotating rod meshing with the rack on the first sliding rod, a first winding wheel being fixedly connected to the second rotating rod in a mirror-distributed manner, a second winding wheel being fixedly connected to one side of the mirror-distributed monitoring arc plate, and a traction rope being wound together between the first winding wheel and the adjacent second winding wheel.

[0008] Preferably, the center of the positioning wheel is located in the mirror plane of the mirror-distributed straightening wheel to ensure the monitoring status of the cable.

[0009] Preferably, the water-blocking mechanism includes equidistant and mirror-distributed second electric rotating shafts, which are respectively disposed in adjacent water-absorbing shells and adjacent rotating shells. Mirror-distributed third rotating rods are rotatably connected to both the rotating shell and the water-absorbing shell. Transmission wheels are disposed on both the mirror-distributed second electric rotating shafts and the mirror-distributed third rotating rods. A fixed frame is fixedly connected to both the rotating shell and the water-absorbing shell. A rotating belt is wound around the transmission wheels on the mirror-distributed second electric rotating shafts and the transmission wheels on the adjacent mirror-distributed third rotating rods. The fixed frame is slidably connected to the adjacent rotating belt. A water-absorbing belt is fixedly connected to the rotating belt near the water-absorbing shell, and the water-absorbing belt is slidably engaged with the adjacent water-absorbing shell.

[0010] Preferably, an anti-slip strip is fixedly connected to the rotating belt near the rotating shell, and the anti-slip strip slides in engagement with the adjacent rotating shell.

[0011] Preferably, a through hole is provided on one side of the water-absorbing shell, a water-squeezing shell is fixedly connected inside the water-absorbing shell, the water-squeezing shell is slidably connected to the adjacent rotating belt and the adjacent water-absorbing belt, and a squeezing block is fixedly connected inside the water-squeezing shell, the squeezing block is squeezed and engaged with the adjacent water-absorbing belt.

[0012] Preferably, the cross-section of the extrusion block is a right-angled trapezoid, with its inclined surface close to the adjacent water-absorbing band, and its inclined surface is a torsion surface, used to gradually squeeze out the water.

[0013] Preferably, the device further includes a measuring mechanism for determining the motion state of the device. The measuring mechanism is disposed on the first fixed frame which is mirror-distributed on one side. The measuring mechanism includes mirror-distributed fixed rods, which are rotatably connected to the adjacent first fixed frame. The fixed rods are fixedly connected to the adjacent first electric rotating shaft. The housing is slidably connected to a mirror-distributed second sliding rod. A spring is disposed between the second sliding rod and the housing. The second sliding rod is in frictional engagement with the adjacent fixed rod. The housing is fixedly connected to a mirror-distributed second fixed frame. The second fixed frame is slidably connected to a sliding block. A button is disposed on the second sliding rod. The button is electrically connected to the equidistant and mirror-distributed second electric rotating shaft. The button is in compression engagement with the adjacent sliding block. The housing is rotatably connected to a mirror-distributed telescopic rod via a mounting rod. The telescopic end of the telescopic rod is hinged to the adjacent sliding block. A counterweight ball is fixedly connected to the fixed part of the telescopic rod.

[0014] Compared with existing technologies, this invention has the following advantages: The invention uses mirror-distributed straightening wheels to straighten cables that have bent due to free fall, preventing the bent cable from affecting the monitoring results and improving the monitoring accuracy of the device. This reduces the workload of subsequent fault diagnosis and prevents misjudgments. Positioning wheels, in conjunction with mirror-distributed monitoring arc plates, position the cable monitoring area, ensuring equal distance between the cable and the monitoring plate, thus improving the accuracy of cable monitoring. Anti-slip strips remove and block rainwater from the upper part of the cable, preventing rainwater from affecting the cable monitoring values ​​and providing friction to prevent slippage during movement. A continuously rotating absorbent strip continuously absorbs rainwater from the cable, preventing rainwater from affecting the monitoring results. The absorbent strip can repeatedly absorb rainwater, improving the practicality of the device. A button, in conjunction with a counterweight ball, monitors the device's movement on the cable and allows for targeted adjustments to the anti-slip strip and absorbent strip, ensuring that rainwater is not missed and does not affect the monitoring results. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2This is a three-dimensional structural diagram of the internal structure of the casing of the present invention;

[0017] Figure 3 This is a three-dimensional structural cross-sectional view showing the positional relationship between the electric push rod and the first fixing frame of the present invention;

[0018] Figure 4 This is an exploded view showing the fit between the housing and the rotating shell of the present invention;

[0019] Figure 5 This is a three-dimensional structural cross-sectional view of the internal structure of the monitoring shell of the present invention;

[0020] Figure 6 This is a three-dimensional structural cross-sectional view of the positioning mechanism of the present invention;

[0021] Figure 7 This is a three-dimensional structural cross-sectional view of the water-blocking mechanism of the present invention;

[0022] Figure 8 This is an exploded view of the absorbent belt and the extrusion block of the present invention;

[0023] Figure 9 This is a three-dimensional structural cross-sectional view of the cooperation relationship between the fixed frame and the rotating belt of the present invention;

[0024] Figure 10 This is a three-dimensional sectional view of the measuring mechanism of the present invention;

[0025] Figure 11 This is a three-dimensional structural diagram illustrating the interaction between the slider and the button in this invention.

[0026] The above-mentioned figures include the following reference numerals: 1. Housing; 101. Electric push rod; 102. First sliding frame; 103. Fastening wheel; 2. First fixed frame; 3. First electric rotating shaft; 4. Rotating wheel; 5. Rotating shell; 6. Water absorption shell; 7. Monitoring shell; 8. Fixed plate; 9. Monitoring arc plate; 10. First rotating rod; 11. Correcting wheel; 12. Correcting mechanism; 1201. Power slide rail; 1202. Second sliding frame; 13. Positioning mechanism; 1301. First sliding rod; 1302. Positioning wheel; 1303. Second rotating rod. 1304 Moving rod, 1305 First winding wheel, 14 Second winding wheel, 14 Water blocking mechanism, 1401 Second electric rotating shaft, 1402 Third rotating rod, 1403 Fixed frame, 1404 Rotating belt, 1405 Water absorption belt, 1406 Anti-slip belt, 1407 Water squeezing shell, 1408 Squeezing block, 15 Measuring mechanism, 1501 Fixed rod, 1502 Second sliding rod, 1503 Second fixed frame, 1504 Sliding block, 1505 Button, 1506 Telescopic rod, 1507 Counterweight ball. Detailed Implementation

[0027] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. The location descriptions selected in the specification, such as upper, lower, lateral, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.

[0028] Experiments have shown that the bending state of cables affects the monitoring results when performing magnetic variable monitoring. Some cables are in a freely hanging, bent state under normal conditions. During routine inspections and monitoring of these cables (magnetic variable monitoring), the bending of the cable may cause changes in the shape of the surrounding magnetic field. This can alter the signal pattern detected by the electromagnetic sensor, leading to inaccurate analysis results. Similarly, bending may cause stress concentration at the bend, resulting in partial discharge. These partial discharge signals can interfere with electromagnetic detection, complicate fault diagnosis, and even lead to misdiagnosis of cable faults, affecting subsequent work.

[0029] Example 1: A self-propelled online monitoring device for high-voltage cables, such as Figures 1-5As shown, the device includes a housing 1. The lower side of the housing 1 has mirrored through holes for draining rainwater. Equally spaced first fixing brackets 2 are fixed to both the front and rear sides of the housing 1. A first electric rotating shaft 3 is positioned between the equal-spaced first fixing brackets 2. A rotating wheel 4 is fixed to the first electric rotating shaft 3, located in the center of the shaft. The rotating wheel 4 has a groove in its center for positioning the device and the cable relative to each other. Electric slide rails are provided on both the front and rear sides inside the housing 1. The electric slide rails on the housing 1 are arc-shaped. The inner slider is fixedly connected to a rotating shell 5. Both rotating shells 5 have electric slide rails on their opposing sides. The electric slide rails on the rotating shells 5 are also arc-shaped. A water-absorbing shell 6 for intercepting rainwater is fixedly connected to the slider of the electric slide rail on the rotating shell 5. Both water-absorbing shells 6 have electric slide rails on their opposing sides. The electric slide rails on the water-absorbing shells 6 are also arc-shaped. A monitoring shell 7 is fixedly connected between the sliders inside the electric slide rails on the two water-absorbing shells 6. The housing 1, the two rotating shells 5, the two water-absorbing shells 6, and the monitoring shell 7 are all provided with U-shaped notches. In the initial state, the housing 1, the two rotating shells 5, the two water-absorbing shells 6, and the monitoring shell 7 are all... The U-shaped notches on the moving shell 5, the two water-absorbing shells 6, and the monitoring shell 7 all face to the right. Two fixed plates 8, mirror-image distributed front-to-back, are fixedly connected to the inner side of the monitoring shell 7. Two monitoring arc plates 9, mirror-image distributed vertically, are rotatably connected between the two fixed plates 8. Monitoring plates 9 are equipped with monitoring plates for monitoring the electromagnetic variables of the cable. Mirror-image distributed sliders are slidably connected to the monitoring shell 7. A first rotating rod 10 is slidably connected to the sliders on the monitoring shell 7. A tension spring is provided between the first rotating rod 10 and the adjacent slider. Initially, the tension spring between the first rotating rod 10 and the adjacent slider is in a stretched state. In this configuration, two first rotating rods 10 are mirror-distributed. An arc-shaped slider is provided on the upper side of the first rotating rod 10, and an arc-shaped sliding groove is provided inside the housing 1. The arc-shaped slider on the first rotating rod 10 slides in the adjacent arc-shaped sliding grooves on the housing 1. A straightening wheel 11 located inside the monitoring housing 7 is fixedly connected to the lower side of the first rotating rod 10. The straightening wheel 11 is provided with a groove for positioning the cable. The monitoring housing 7 is provided with a straightening mechanism 12 for straightening the cable and a positioning mechanism 13 for ensuring the monitoring position of the cable. The water-absorbing housing 6 is provided with a water-blocking mechanism 14 for removing water.

[0030] like Figures 1-3As shown, electric push rods 101 are fixedly connected to the lower sides of the first fixed frame 2 on the left front side and the first fixed frame 2 on the left rear side. The front and rear sides of the housing 1 are slidably connected to the first sliding frames 102 distributed at equal intervals. The telescopic end of the electric push rod 101 is fixedly connected to the adjacent first sliding frame 102. A fastening wheel 103 is rotatably connected between two adjacent first sliding frames 102. The fastening wheel 103 is provided with a groove for positioning the cable and the device. The two fixed frames 2 on the right side are respectively provided with self-locking components between the two adjacent first sliding frames 102. The self-locking components are existing technology and are used to ensure the state between the fastening wheel 103 and the adjacent rotating wheel 4.

[0031] like Figure 2 , Figure 5 and Figure 6 As shown, the correction mechanism 12 includes two power slide rails 1201 that are mirror-distributed in front and back. Both power slide rails 1201 are fixed to the inner wall of the monitoring shell 7. The sliders in the two power slide rails 1201 are jointly fixed to a second sliding frame 1202. The upper side of the second sliding frame 1202 is provided with two limit holes that are mirror-distributed in front and back. The lower side of the first rotating rod 10 is provided with a limit rod. The limit rod on the lower side of the first rotating rod 10 is limited and engaged with the adjacent limit hole on the second sliding frame 1202.

[0032] like Figure 5 and Figure 6 As shown, the positioning mechanism 13 includes a first sliding rod 1301, which is slidably connected to the monitoring housing 7, and a spring is provided between them. A rack is provided on the left side of the first sliding rod 1301, and the rack on the first sliding rod 1301 is located between the housing 1 and the monitoring housing 7. A positioning wheel 1302 is rotatably connected to the right side of the first sliding rod 1301. The positioning wheel 1302 is located inside the monitoring housing 7 and between two monitoring arc plates 9. A second rotating rod 1303 is rotatably connected to the left side of the outside of the monitoring housing 7 through a mounting plate. A gear that meshes with the rack on the first sliding rod 1301 is provided in the middle of the 1303. Two first winding wheels 1304, which are distributed in a mirror image, are fixedly connected to the second rotating rod 1303. The two first winding wheels 1304 are located on the upper and lower sides of the gear on the second rotating rod 1303, respectively. A second winding wheel 1305 is fixedly connected to the front side of each of the two monitoring arc plates 9. A traction rope is wound together between the first winding wheel 1304 and the adjacent second winding wheel 1305. The center of the positioning wheel 1302 is located in the mirror plane of the mirror-distributed correction wheel 11 to ensure the monitoring status of the cable.

[0033] like Figure 5 and Figures 7-9As shown, the water-blocking mechanism 14 includes four second electric rotating shafts 1401 that are equidistant and mirror-distributed vertically. The four second electric rotating shafts 1401 are respectively disposed inside adjacent water-absorbing shells 6 and adjacent rotating shells 5. The inner sides of both rotating shells 5 and water-absorbing shells 6 are rotatably connected to third rotating rods 1402 that are mirror-distributed vertically. Each mirror-distributed second electric rotating shaft 1401 and mirror-distributed third rotating rod 1402 is equipped with a transmission wheel. A fixing frame 1403 is fixedly connected to the inner sides of both rotating shells 5 and water-absorbing shells 6. The fixing frame 1403 is a U-shaped frame, and the fixing frame 1403 is aligned with the center of the U-shaped notch of the adjacent rotating shell 5 and adjacent water-absorbing shell 6. The transmission wheels on the mirror-distributed second electric rotating shafts 1401 and the adjacent mirror-distributed third rotating rods 1402 are rotatably connected to the inner sides of both rotating shells 5 and adjacent water-absorbing shells 6. The transmission wheels on the third rotating rod 1402 of the cloth are all wound around the rotating belt 1404. The two adjacent rotating belts 1404 are mirror images of each other. The fixed frame 1403 is slidably connected to the adjacent rotating belt 1404 to ensure that the rotating belt 1404 fits the U-shaped notch and provides support. The rotating belt 1404 inside the water-absorbing shell 6 is fixedly connected to the water-absorbing belt 1405. The water-absorbing belt 1405 is made of elastic water-absorbing material and is used to absorb rainwater attached to the cable. The water-absorbing belt 1405 is slidably engaged with the U-shaped notch of the adjacent water-absorbing shell 6. The rotating belt 1404 inside the rotating shell 5 is fixedly connected to the anti-slip belt 1406. The water-absorbing belt 1405 is made of elastic anti-slip material and is used to intercept rainwater. The anti-slip belt 1406 is slidably engaged with the U-shaped notch of the adjacent rotating shell 5.

[0034] like Figures 7-9 As shown, the water-absorbing shell 6 has a through hole on its left side for draining rainwater. Inside the water-absorbing shell 6, near the through hole, a water-squeezing shell 1407 is fixedly connected. The water-squeezing shell 1407 is slidably connected to the adjacent rotating belt 1404 and the adjacent water-absorbing belt 1405. A squeezing block 1408 is fixedly connected inside the squeezing shell 1407. The squeezing block 1408 squeezes and engages with the adjacent water-absorbing belt 1405 to squeeze out the water in the water-absorbing belt 1405. The cross-section of the squeezing block 1408 is a right trapezoid, and its right side is an inclined surface. The inclined surface gradually tilts to the right from top to bottom. The inclined surface is a twisted surface, that is, the bottom edge and the top edge of the inclined surface are not in the same plane. The upper side of the inclined surface of the front squeezing block 1408 is twisted counterclockwise to gradually squeeze out the water in the adjacent water-absorbing belt 1405.

[0035] When using this device to monitor high-voltage cables, the user first moves the U-shaped notch of the housing 1 to the right side of the cable. Then, the user controls the device to move to the right, and the cable moves to the left relative to the device to the end of the U-shaped notch of the housing 1. During this process, the cable also moves to the left relative to the device to the U-shaped notch between the two rotating shells 5, the two water-absorbing shells 6, and the monitoring shell 7. At this time, the two rotating wheels 4 are mounted on the upper side of the cable. Taking the front electric push rod 101 as an example, the user controls the telescopic end of the electric push rod 101 to retract. The telescopic end of the electric push rod 101 drives the first sliding frame 102 on the left front side to move upward. The first sliding frame 102 on the left front side drives the fastening wheel 103 and the first sliding frame 102 on the right front side to move upward. As the fastening wheel 103 moves upward, it contacts the cable and cooperates with the rotating wheel 4 to clamp the cable. During this process, the self-locking component between the first fixed frame 2 on the right front side and the first sliding frame 102 on the right front side locks their positions. At this time, the device clamps and fixes the cable.

[0036] To ensure uniform monitoring of the circumferential magnetic field of the cable, the distance between the monitoring device and the cable must be maintained. The following operations are required: When the cable moves to the left relative to the device, the monitoring housing 7, through the two fixed plates 8, drives the two monitoring arc plates 9 to move to the right. The monitoring housing 7, through the spring between itself and the first sliding rod 1301, drives the first sliding rod 1301 to move to the right. The first sliding rod 1301 drives the positioning wheel 1302 to move to the right. When the positioning wheel 1302 contacts the cable, the cable axis is already located between the two monitoring arc plates 9. As the positioning wheel 1302 continues to move to the right, the cable squeezes the positioning wheel 1302, causing the positioning wheel 1302 to drive the first sliding rod 1301 to move to the left relative to the monitoring housing 7, simultaneously squeezing the spring between the first sliding rod 1301 and the monitoring housing 7. When the first sliding rod 1301 moves to the left relative to the monitoring housing 7, the first sliding rod 1301 drives its upper rack to move towards... The left synchronous movement causes the rack on the first sliding rod 1301 to mesh with the gear on the second rotating rod 1303, driving the second rotating rod 1303 to rotate. The second rotating rod 1303 then drives the two first winding wheels 1304 on it to rotate. The two first winding wheels 1304 drive the adjacent second winding wheels 1305 to rotate through adjacent traction ropes. The two second winding wheels 1305 rotate in opposite directions, causing the two monitoring arc plates 9 to swing in opposite directions until the cable moves to the left relative to the device to the end of the U-shaped notch in the housing 1. At this time, the right ends of the two monitoring arc plates 9 contact each other, forming a ring and restricting the cable. The axis of the cable coincides with the axis of the ring formed by the two monitoring arc plates 9, and the cable centering step is completed. The positioning wheel 1302, in cooperation with the mirror-distributed monitoring arc plates 9, positions the cable monitoring part, thereby ensuring that the distance between the cable and the monitoring plate remains equal, improving the accuracy of the cable monitoring by the device.

[0037] To ensure that the cable monitored by the two monitoring arc plates 9 remains straight, thereby enhancing the monitoring effect of the device, the following operation is required: After the cable centering step is completed, the user controls the sliders in the arc-shaped electric slide rails on the two water-absorbing shells 6 to rotate the monitoring shell 7 clockwise by 90°. During this process, the two sliders on the monitoring shell 7 respectively drive the first rotating rod 10 on them to rotate. The first rotating rod 10 slides in the groove inside the housing 1 until the first rotating rod 10 slides out of the groove inside the housing 1 (i.e., the first rotating rod...). The upper end of the first rotating rod 10 slides to the U-shaped notch of the housing 1. The tension spring between the first rotating rod 10 and the adjacent slider on the monitoring housing 7 drives the first rotating rod 10 to move towards the second sliding frame 1202. The first rotating rod 10 drives the adjacent straightening wheel 11 to move towards the second sliding frame 1202 until the lower end of the first rotating rod 10 is embedded in the adjacent limiting hole on the second sliding frame 1202. At this time, the cross-section of the middle part of the two straightening wheels 11 and the cross-section of the middle part of the positioning wheel 1302 are on the same plane. When the monitoring housing 7 rotates 90° clockwise, the positioning wheel 1... At this point, 302 is located on the upper side of the cable, while the two straightening wheels 11 are located on the lower side of the cable. Subsequently, the user controls the sliders in the two power slide rails 1201 to move upward. The two sliders in the two power slide rails 1201 together drive the second sliding frame 1202 to move upward. The second sliding frame 1202 drives the two first rotating rods 10 to move upward synchronously. The two first rotating rods 10 drive the two straightening wheels 11 and the two sliders on the monitoring shell 7 to move upward synchronously. As the two straightening wheels 11 gradually move upward, the two straightening wheels 11 contact and drive the cable to bend upward, thereby counteracting the bending caused by the free fall of the cable, until the two straightening wheels 11 cooperate with the positioning wheel 1302 to straighten the monitoring section of the cable (i.e., the cable between the two straightening wheels 11). At this point, the cable straightening step is completed, and the device is installed on the cable. By using the mirror-distributed straightening wheels 11 to straighten the cable that has bent due to free fall, the bent cable is prevented from affecting the monitoring results, improving the monitoring accuracy of the device, thereby reducing the workload of subsequent fault diagnosis and preventing misjudgment of faults.

[0038] After the monitoring shell 7 is rotated 90° clockwise, the U-shaped notch of the monitoring shell 7 and the U-shaped notch of the housing 1 cooperate to wrap the cable, thereby ensuring that the cable does not deviate significantly from the device when it moves. After the device is installed, the user starts the two first electric rotating shafts 3. The first electric rotating shafts 3 drive the adjacent rotating wheels 4 to rotate. The rotating wheels 4 cooperate with the adjacent fastening wheels 103 to move the device along the cable. During this process, the cable continuously moves into the device. The cable entering the device is straightened by the two straightening wheels 11 and the positioning wheel 1302. At the same time, the user controls the magnetic variable monitoring plates on the two monitoring arc plates 9 to monitor the condition of the cable, thereby ensuring the condition of the cable when the device is monitoring and reducing the influence of external variables. The user repeats the above steps to monitor the cable step by step until the entire cable is monitored. At this time, the device is used.

[0039] When using magnetic variables to monitor cable conditions, if the cable experiences the plum rain season in southern China (i.e., continuous rain for several days), regular inspections are necessary to ensure normal cable operation. However, the rainwater flowing over the cable contains positive and negative ions. These ions can generate a weak current when moving in an electromagnetic field, thus creating a new magnetic field. This changing magnetic field may superimpose on the cable's original electromagnetic field, causing signal distortion or additional noise. Especially when using electromagnetic induction technology for cable fault location, cable path detection, or cable condition assessment, electromagnetic interference in water can affect the detection equipment's ability to identify and interpret the cable's true electromagnetic signals, reducing detection accuracy and leading to misjudgments. To address these issues, the following steps are required:

[0040] When using this device during the rainy season, the user controls the sliders in the two electric slide rails on the housing 1 to rotate the two rotating shells 5 and the two water-absorbing shells 6 clockwise by 90°. Then, the user controls the sliders in the electric slide rails on the two rotating shells 5 to rotate the two water-absorbing shells 6 clockwise by 180°. At this point, the device's usage mode has been switched.

[0041] After the device's operating state is switched, the user simultaneously controls the rotation of all second electric rotating shafts 1401. Taking the four second electric rotating shafts 1401 inside the front rotating shell 5 and the front water-absorbing shell 6 as an example, when the device moves and monitors the cable, the two second electric rotating shafts 1401 inside the rotating shell 5 drive the rotating belt 1404 to rotate through their upper transmission wheels. The rotating belt 1404 drives the adjacent anti-slip belt 1406 to rotate. The anti-slip belt 1406 drives the third rotating rod 1402 to rotate through the upper transmission wheel of the third rotating rod 1402 inside the rotating shell 5. During this process, the upper half of the cable entering the device is intercepted by the continuously rotating anti-slip belt 1406 and flows downward. The anti-slip belt 1406 also provides a certain frictional resistance for the device, thereby preventing the device from slipping due to reduced friction. The anti-slip belt 1406 scrapes and blocks rainwater on the upper part of the cable, preventing rainwater from affecting the cable monitoring values, and at the same time provides friction for the device to prevent slipping when moving.

[0042] During rainfall, due to gravity, the amount of rainwater flowing under the cable is much greater than that flowing under the cable. To ensure that the rainwater flowing within the device does not affect the monitoring, the following operations are required:

[0043] When the device moves and monitors the cable, the two second electric rotating shafts 1401 inside the water-absorbing shell 6 drive the rotating belt 1404 to rotate via their upper transmission wheels. Taking the front water-absorbing belt 1405 as an example, the rotating belt 1404 drives the water-absorbing belt 1405 to rotate. As the water-absorbing belt 1405 rotates, it continuously absorbs the rainwater entering the underside of the cable inside the device, thereby preventing rainwater from flowing onto the cable located inside the monitoring shell 7. After absorbing the water, the water-absorbing belt 1405 moves into the water-squeezing shell 1407 driven by the rotating belt 1404. When the water-absorbing belt 1405 first enters the water-squeezing shell 1407, because the inclined surface of the squeezing block 1408 is a torsional surface, the front half of the water-absorbing belt 1405 is squeezed by the squeezing block 1408 much more than the rear half of the water-absorbing belt 1405. Therefore, the rainwater in the water-absorbing belt 1405 gradually gathers towards the rear half of the water-absorbing belt 1405. As the water-absorbing belt 1405 continues to move downwards, the squeezing block 1408 gradually increases the squeezing pressure on the rear half of the water-absorbing belt 1405 to match that on the front half. During this process, the rainwater in the water-absorbing belt 1405 is gradually squeezed from front to back, thus fully squeezing the rainwater in the water-absorbing belt 1405 and preventing incomplete squeezing of the rainwater. After the rainwater is squeezed out, it flows downwards from the squeezing shell 1407 through the through holes on the adjacent water-absorbing shell 6 into the housing 1, and then flows to the outside through the adjacent through holes on the housing 1. The water-absorbing belt 1405, after squeezing out the water, continues to absorb the rainwater attached to the cable. By continuously rotating the water-absorbing belt 1405 and continuously absorbing the rainwater on the cable, the rainwater is prevented from affecting the monitoring results. Moreover, the water-absorbing belt 1405 can repeatedly absorb rainwater, which improves the practicality of this device.

[0044] Example 2: Based on Example 1, such as Figure 1 , Figure 2 , Figure 10 and Figure 11As shown, it also includes a measuring mechanism 15 for measuring the motion state of the device. The measuring mechanism 15 is disposed on two first fixed frames 2 arranged in a mirror image on the left side. The measuring mechanism 15 includes two fixed rods 1501 arranged in a mirror image front to back. The fixed rods 1501 are rotatably connected to the adjacent first fixed frames 2. The fixed rods 1501 are fixedly connected to the left side of the adjacent first electric rotating shaft 3. The housing 1 is slidably connected to two second sliding rods 1502 arranged in a mirror image front to back. The opposite sides of the two second sliding rods 1502 are provided with arc-shaped hooks. There is a gap between the second sliding rods 1502 and the housing 1. Equipped with a spring, the second sliding rod 1502 engages with the adjacent fixed rod 1501 through frictional contact, used to monitor the movement direction of the device. Two second fixed frames 1503, mirror-distributed front and rear, are fixedly connected inside the housing 1. Both second fixed frames 1503 are L-shaped plates, and sliding blocks 1504 are slidably connected to each second fixed frame 1503. Arc-shaped surfaces are provided on both the front and rear sides of the upper part of the sliding block 1504. A button 1505 is located on the lower side of the second sliding rod 1502. Initially, both buttons 1505 are in a non-energized, untriggered state. When the device moves forward, the front... The first electric rotating shaft 3 on the side drives the front fixed rod 1501 to rotate. The front fixed rod 1501 drives the front second sliding rod 1502 to move forward by friction. The front second sliding rod 1502 drives the button 1505 on it to move forward until the second sliding rod 1502 stops moving forward. At this time, the front button 1505 is energized, while the rear button 1505 is not energized. That is, when the device moves forward, the front button 1505 is energized, and when the device moves backward, the rear button 1505 is energized. The button 1505 and the second electric rotating shaft 1401, which are equidistant and mirror-distributed, are electrically... The button 1505 is pressed against the adjacent sliding block 1504. The distance between the upper side of the sliding block 1504 and the lower side of the adjacent second sliding rod 1502 is less than the distance when the button 1505 is extended. The inner side of the housing 1 is rotatably connected to two telescopic rods 1506 distributed in a front-to-back mirror shape via a mounting rod. The telescopic end of the telescopic rod 1506 is hinged to the adjacent sliding block 1504. The fixed part of the telescopic rod 1506 is fixedly connected to a counterweight ball 1507, and the weight of the counterweight ball 1507 is greater than the sum of the weights of the telescopic rod 1506 and the sliding block 1504, which is used for positioning.

[0045] When the cable is normally installed, it forms a downward-curving arc. When the user controls this device to clean and monitor rainwater adhering to the cable, the device moves in the same direction as the rainwater when moving towards the lowest point of the cable, but moves in the opposite direction when moving from the lowest point towards both ends. The amount of rainwater the device needs to handle differs significantly between these two scenarios. If the rainwater is not completely cleaned from the cable, the monitoring results will be affected. To resolve this issue, the following operations are required:

[0046] When the device moves from the rear end of the cable towards the middle (i.e., the direction of movement of the device is the same as the direction of movement of the rainwater), the first electric rotating shaft 3 drives the adjacent fixed rod 1501 to rotate. The front fixed rod 1501 drives the front second sliding rod 1502 forward by friction, and at the same time compresses the spring between the front second sliding rod 1502 and the housing 1. The front second sliding rod 1502 drives the front button 1505 forward until the front button 1505 stops moving forward. At this time, the button 1505 is switched to the energized state, and the rear fixed rod 15... 01 During rotation, the second sliding rod 1502 on the rear side will not move forward, and the rear button 1505 is not energized, so the rear button 1505 is always in an untriggered state. Since the device is tilted, the two counterweight balls 1507 drive the adjacent sliding block 1504 to slide backward through the adjacent telescopic rod 1506. At this time, because the front button 1505 moves forward, the front sliding block 1504 will not press against the front button 1505, while the rear sliding block 1504 moves backward synchronously, and the sliding block 1504 contacts and presses against the rear button 1505. 505. At this point, the device is moving forward, indicating that it is moving downwards along the cable. As the device moves from the bottom of the cable towards the front, it changes its tilt direction. The two counterweight balls 1507 drive the adjacent sliding blocks 1504 forward via the adjacent telescopic rods 1506. During this process, the front sliding block 1504 gradually contacts and presses the front button 1505, while the rear sliding block 1504 gradually loses pressure on the rear button 1505. At this time, the device is still moving forward, and the front button 1505 is being squeezed. When the front button 1505 is pressed, it controls all the second electric rotating shafts 1401 to accelerate their rotation. At this time, the rotation speed of the two anti-slip belts 1406 and the two water-absorbing belts 1405 increases, thereby enhancing the isolation and absorption efficiency of rainwater. The movement status of the device on the cable is monitored by the button 1505 in conjunction with the counterweight ball 1507, and the status of the anti-slip belts 1406 and the water-absorbing belts 1405 is adjusted accordingly to ensure that the device does not leak rainwater and affect the monitoring results.

[0047] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of the invention. Therefore, the scope of the invention should be limited only by the appended claims.

Claims

1. A self-propelled online monitoring device for high-voltage cables, characterized in that, The device includes a housing (1), with equidistant and mirror-distributed first fixed frames (2) fixed to the outer side of the housing (1). A first electric rotating shaft (3) is arranged between the equidistant first fixed frames (2), and a rotating wheel (4) is fixed to the first electric rotating shaft (3). Mirror-distributed electric slide rails are arranged inside the housing (1). A rotating shell (5) is fixed to the slider within the electric slide rails of the housing (1). Electric slide rails are arranged on opposite sides of the mirror-distributed rotating shells (5). A water-absorbing shell (6) is fixed to the slider of the electric slide rail on the rotating shell (5). Electric slide rails are arranged on opposite sides of the mirror-distributed water-absorbing shells (6). A monitoring shell (7) is fixed to the sliders within the electric slide rails of the mirror-distributed water-absorbing shells (6). The monitoring shell (7) is fixedly connected to the inner side of a mirror-distributed fixed plate (8). The mirror-distributed fixed plates (8) are rotatably connected to a mirror-distributed monitoring arc plate (9). The monitoring shell (7) is slidably connected to a mirror-distributed slider. The slider on the monitoring shell (7) is slidably connected to a first rotating rod (10) that is slidably connected to the housing (1). A tension spring is provided between the first rotating rod (10) and the adjacent slider. A straightening wheel (11) located inside the monitoring shell (7) is fixedly connected to the first rotating rod (10). The monitoring shell (7) is provided with a straightening mechanism (12) for straightening the cable and a positioning mechanism (13) for ensuring the monitoring position of the cable. The water-absorbing shell (6) is provided with a water-blocking mechanism (14) for removing water. The water-blocking mechanism (14) includes equidistant and mirror-distributed second electric rotating shafts (1401). These equidistant and mirror-distributed second electric rotating shafts (1401) are respectively disposed within adjacent water-absorbing shells (6) and adjacent rotating shells (5). Mirror-distributed third rotating rods (1402) are rotatably connected within both the rotating shell (5) and the water-absorbing shell (6). Both the mirror-distributed second electric rotating shafts (1401) and the mirror-distributed third rotating rods (1402) are equipped with transmission wheels. The rotating shell (5) and... Each of the water-absorbing shells (6) is fixedly connected to a fixed frame (1403). The transmission wheel on the second electric rotating shaft (1401) and the transmission wheel on the adjacent and mirror-distributed third rotating rod (1402) are together wound around a rotating belt (1404). The fixed frame (1403) is slidably connected to the adjacent rotating belt (1404). The rotating belt (1404) near the water-absorbing shell (6) is fixedly connected to a water-absorbing belt (1405). The water-absorbing belt (1405) is slidably engaged with the adjacent water-absorbing shell (6).

2. The self-propelled high-voltage cable online monitoring device according to claim 1, characterized in that, Electric push rods (101) are fixedly connected to the first fixed frame (2) which is mirrored on one side. The housing (1) is slidably connected to the first sliding frame (102) which is equidistant and mirrored. The telescopic end of the electric push rod (101) is fixedly connected to the adjacent first sliding frame (102). The mirrored first sliding frames (102) are rotatably connected to fastening wheels (103).

3. The self-propelled high-voltage cable online monitoring device according to claim 1, characterized in that, The correction mechanism (12) includes a mirror-distributed power slide rail (1201), all of which are fixedly connected to the monitoring shell (7). The sliders in the mirror-distributed power slide rail (1201) are all fixedly connected to the second sliding frame (1202). The mirror-distributed first rotating rod (10) is limited to the second sliding frame (1202). The upper side of the second sliding frame (1202) is provided with two mirror-distributed limiting holes, and the lower side of the first rotating rod (10) is provided with a limiting rod; The first rotating rod (10) drives the adjacent straightening wheel (11) to move toward the second sliding frame (1202) until the lower end of the first rotating rod (10) is embedded in the adjacent limiting hole on the second sliding frame (1202). Then, the second sliding frame (1202) drives the two first rotating rods (10) to move upward synchronously.

4. The self-propelled high-voltage cable online monitoring device according to claim 3, characterized in that, The positioning mechanism (13) includes a first sliding rod (1301), which is slidably connected to the monitoring shell (7). A spring is provided between the first sliding rod (1301) and the monitoring shell (7). A rack is provided on the side of the first sliding rod (1301) away from the mirror-distributed first rotating rod (10), and a positioning wheel (1302) is rotatably connected on the side of the first sliding rod (1301) close to the mirror-distributed first rotating rod (10). The monitoring shell (7) is connected by... The mounting plate is rotatably connected to a second rotating rod (1303). A gear is provided on the second rotating rod (1303). The gear on the second rotating rod (1303) meshes with the rack on the first sliding rod (1301). A first winding wheel (1304) with a mirror distribution is fixedly connected to the second rotating rod (1303). A second winding wheel (1305) is fixedly connected to one side of the mirror-distributed monitoring arc plate (9). A traction rope is wound together between the first winding wheel (1304) and the adjacent second winding wheel (1305).

5. The self-propelled high-voltage cable online monitoring device according to claim 4, characterized in that, The center of the positioning wheel (1302) is located in the mirror plane of the mirror-distributed correction wheel (11) to ensure the monitoring status of the cable.

6. The self-propelled high-voltage cable online monitoring device according to claim 5, characterized in that, An anti-slip strip (1406) is fixedly connected to the rotating belt (1404) near the rotating shell (5), and the anti-slip strip (1406) slides in cooperation with the adjacent rotating shell (5).

7. The self-propelled high-voltage cable online monitoring device according to claim 6, characterized in that, The water-absorbing shell (6) has a through hole on one side. A water-squeezing shell (1407) is fixedly connected inside the water-absorbing shell (6). The water-squeezing shell (1407) is slidably connected to the adjacent rotating belt (1404) and the adjacent water-absorbing belt (1405). A squeezing block (1408) is fixedly connected inside the water-squeezing shell (1407). The squeezing block (1408) is squeezed and engaged with the adjacent water-absorbing belt (1405).

8. The self-propelled high-voltage cable online monitoring device according to claim 7, characterized in that, The extrusion block (1408) has a right-angled trapezoidal cross section, with its inclined surface close to the adjacent water-absorbing strip (1405), and its inclined surface is a torsion surface, used to gradually squeeze out water.

9. A self-propelled high-voltage cable online monitoring device according to claim 8, characterized in that, It also includes a measuring mechanism (15) for measuring the motion state of the device. The measuring mechanism (15) is set on the first fixed frame (2) which is mirror-distributed on one side. The measuring mechanism (15) includes a mirror-distributed fixed rod (1501). The fixed rod (1501) is rotatably connected to the adjacent first fixed frame (2). The fixed rod (1501) is fixedly connected to the adjacent first electric rotating shaft (3). The housing (1) is slidably connected to a mirror-distributed second sliding rod (1502). A spring is provided between the second sliding rod (1502) and the housing (1). The second sliding rod (1502) is in frictional engagement with the adjacent fixed rod (1501). The housing ( 1) A second fixed frame (1503) with a mirror distribution is fixedly connected inside. The second fixed frame (1503) is slidably connected to a sliding block (1504). A button (1505) is provided on the second sliding rod (1502). The button (1505) is electrically connected to the second electric rotating shaft (1401) which is equidistant and mirror distribution. The button (1505) is pressed and engaged with the adjacent sliding block (1504). A telescopic rod (1506) with a mirror distribution is rotatably connected inside the housing (1) through a mounting rod. The telescopic end of the telescopic rod (1506) is hinged to the adjacent sliding block (1504). A counterweight ball (1507) is fixedly connected to the fixed part of the telescopic rod (1506).

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