Portable medium-voltage carrier line detection device and method

Abstract

The invention relates to a portable medium-voltage carrier line detection device and method, the portable medium-voltage carrier line detection device comprises an insulating rod, a signal collector and a fixed box, the fixed box is provided with a wire slot for accommodating a to-be-detected wire, and a sliding rod and a screw rod are arranged along the axial direction of the wire slot and are driven by a driving motor; the first sliding block is matched with the screw rod and the sliding rod and drives the sliding frame to move; an arc-shaped ice crushing strip is arranged on the sliding frame and is matched with the guide wheel and the guide folding rail to extrude and crush an ice shell; the second sliding block drives the ice shoveling semi-ring to move in the axial direction through the second telescopic rod to shovel an ice shell. The semi-ring magnet is matched and closed with the extrusion strip through the first telescopic rod, the first spring and the first extrusion wheel to form a current induction magnetic ring, and axially scans and monitors current along with the first sliding block. The method has the effect of improving the detection stability.

Description

Technical Field

[0001] This invention belongs to the technical field of power line operation and maintenance testing, and in particular relates to a portable medium-voltage carrier line testing device and method. Background Technology

[0002] Currently, carrier line testing of medium-voltage power distribution lines usually needs to be completed while the conductors are energized. The work sites are mostly overhead line environments. Due to factors such as limited working space, inconvenience of manual high-altitude operation, and unstable conductor surface condition, the testing process has high requirements for the insulation safety, portability, and compatibility with conductors of the equipment.

[0003] Existing medium-voltage carrier line testing methods mostly employ external testing equipment to perform clamping contact or local fixed-point sampling on the conductors. When there are deposits such as ice shells on the conductor surface, the clamping structure is prone to insufficient fit, unstable contact, or incomplete closure. In addition, it usually requires manual cleaning of the conductor surface and multiple adjustments to the testing position, which can easily lead to discontinuous testing process, poor data consistency, and cumbersome operation. Summary of the Invention

[0004] The purpose of this invention is to provide a portable medium-voltage carrier line detection device and method to solve the technical problems of discontinuous detection process and large fluctuations in monitoring results caused by changes in conductor surface condition and unstable clamping and bonding in existing medium-voltage carrier line detection methods.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a portable medium-voltage carrier line testing device, comprising an insulating rod, a signal acquisition unit, and a fixing box mounted on the signal acquisition unit, wherein the fixing box is provided with a wire groove for accommodating the conductor to be tested; The fixed box is provided with a slide rod and a screw rod along the axial direction of the groove, and the screw rod is connected to the drive motor for transmission. The portable medium-voltage carrier line detection device further includes a first slider, which is slidably engaged with the slide rod and driven by the screw. The drive motor drives the screw to rotate so as to move the first slider along the axial direction of the slide rod. The portable medium-voltage carrier line detection device also includes a slide frame, which is slidably connected to the fixed box. The sliding frame is equipped with an arc-shaped ice-crushing strip and a guide wheel that cooperates with the arc-shaped ice-crushing strip. The fixed box is equipped with a guide rail so that the arc-shaped ice-crushing strip can crush the ice shell on the surface of the conductor to be tested during the movement of the sliding frame. The portable medium-voltage carrier line detection device also includes a second slider, a second telescopic rod, and an ice-shoveling half-ring. The second slider is slidably engaged with the slide rod, and the ice-shoveling half-ring is connected to the second slider through the second telescopic rod so as to remove the broken ice shell as the second slider moves along the axial direction of the slide rod. The portable medium-voltage carrier line detection device further includes a first telescopic rod, a semi-ring magnet, a first spring, a first extrusion wheel, and an extrusion strip. The semi-ring magnet is connected to the first slider through the first telescopic rod. The first extrusion wheel cooperates with the extrusion strip, and the first spring is used to provide a reset force to the semi-ring magnet so that the semi-ring magnet closes and connects with the wire under test to form a current-sensing magnetic ring and monitors the current of the wire under test. The semi-ring magnet moves axially along the slide bar with the first slider to perform axial scanning current monitoring on the conductor under test in the closed state.

[0006] By adopting the above technical solution, and by setting a groove to accommodate the conductor under test and form a limiting position, the position and orientation of the conductor under test can be constrained within a preset detection area. This ensures the relative position stability of the conductor under test during subsequent ice breaking, ice removal, and current monitoring, reducing contact instability and detection interruption caused by conductor shaking or displacement. By driving the screw to rotate via a drive motor and driving the first slider to move along the slider axis, while the sliding frame is slidably connected to the fixed box, controllable movement of the detection mechanism along the axis of the conductor under test can be achieved. This provides a motion basis for continuous scanning of the detection action, avoiding insufficient coverage caused by single-point measurement. Through arc... The ice-crushing strip, in conjunction with the guide wheel and guide rail, crushes the ice shell on the conductor surface, transforming it from a solid, adhered state to a broken, loose state. This reduces the obstruction of the ice shell to the subsequent cleaning mechanism's adhesion and operation, and decreases the need for manual cleaning and repeated adjustments. The ice-scraping semi-ring moves axially with the second slider to remove the crushed ice shell, and the semi-ring magnet closes to form a current-sensing magnetic ring for axial scanning current monitoring. This allows for stable closure and continuous scanning of the current-sensing magnetic ring after the conductor surface is cleaned, thereby obtaining continuously distributed current monitoring data along the conductor's axial direction and improving the continuity and consistency of the monitoring process.

[0007] In one example, the present invention can be further configured as follows: ear plates are provided on both sides of the fixing box, the wire groove is provided on the fixing box and located between the two ear plates, the slide rod and the screw are arranged along the axial direction of the wire groove, and the two ends of the slide rod and the screw are respectively connected to the ear plates.

[0008] By adopting the above technical solution, by setting ear plates on both sides of the fixed box and connecting the two ends of the slide rod and the screw rod to the ear plates respectively, the slide rod and the screw rod can form end support and coaxial constraint, thereby improving the assembly stability of the axial transmission components, reducing the risk of swaying and movement of the screw rod during operation, and making it easier to keep the movement trajectory of the first slider and the second slider consistent with the axial direction of the groove, ensuring the alignment relationship of each actuator in the direction of the wire.

[0009] In one example, the present invention can be further configured as follows: a first telescopic rod is connected to the first slider, the semi-ring magnet is connected to the first telescopic rod, the first extrusion wheel is rotatably disposed on the first telescopic rod, the extrusion strip is disposed on the ear plate, and the first spring is used to provide a reset force to the semi-ring magnet so that the first extrusion wheel drives the semi-ring magnet to close and dock when it rolls and extrudes along the extrusion strip.

[0010] By adopting the above technical solution, the first slider is connected to the first telescopic rod and the semi-ring magnet moves in conjunction with the first telescopic rod. At the same time, the first extrusion wheel rolls along the extrusion strip to extrude and drive the semi-ring magnet to close and dock. This can convert the axial displacement of the first slider into the closing action of the semi-ring magnet, so that the formation process of the current-inducing magnetic ring is synchronized with the movement of the slider, reducing the need for manual intervention in opening and closing adjustments, and making the trigger position of the closing action more clear, thus ensuring the repeatability of the closing process and the reliability of the closing state.

[0011] In one example, the invention can be further configured such that the extrusion strip includes an outer extrusion section, an inclined extrusion section, and an inner extrusion section connected in sequence.

[0012] By adopting the above technical solution, and by setting the extrusion bar as a sequentially connected structure of extrusion outer section, extrusion inclined section and extrusion inner section, a stroke change from pre-contact to gradual pressing and then to maintaining pressing can be formed during the rolling process of the first extrusion wheel. This makes the closing process of the semi-ring magnet smoother and more controllable, avoids sudden impact during closing, and makes it easier to maintain the closed state in a stable position, thereby improving the consistency of the current-inducing magnetic ring closing and docking.

[0013] In one example, the present invention can be further configured as follows: a sliding groove is provided on the sliding frame, a connecting rod is slidably connected in the sliding groove, one end of the connecting rod is connected to a semi-circular piece, and an arc-shaped ice crushing strip is connected to the semi-circular piece, so that the arc-shaped ice crushing strip moves with the sliding frame along the axial direction of the groove to crush the ice shell on the surface of the conductor to be tested.

[0014] By adopting the above technical solution, by setting a groove in the sliding frame and sliding the connecting rod in the groove, with one end of the connecting rod connected to a semi-circular plate and an arc-shaped ice-breaking strip connected to the semi-circular plate, the arc-shaped ice-breaking strip can obtain a movable relative position adjustment when the sliding frame moves axially. This makes it easier for the arc-shaped ice-breaking strip to fit against the outer surface of the conductor for squeezing action, reducing squeezing deviation caused by uneven conductor surface or changes in ice shell thickness, and ensuring continuous execution of ice-breaking action in different positions.

[0015] In one example, the present invention can be further configured such that: a guide rail is provided on the fixed box, the guide wheel is rotatably disposed on the sliding frame, and the guide wheel slides in cooperation with the guide rail to guide and restrict the sliding frame to move along the axial direction of the groove.

[0016] By adopting the above technical solution, the axial movement of the sliding frame is guided and restricted by the sliding cooperation between the guide wheel and the guide rail. This provides trajectory constraints on the movement direction of the sliding frame, thereby suppressing the lateral swaying and offset during the movement of the sliding frame. This makes the squeezing and breaking position of the arc-shaped ice-breaking strip on the surface of the conductor more stable, reduces the risk of frictional vibration and jamming during the ice-breaking process, and ensures the continuity of the ice-breaking action along the axial direction.

[0017] In one example, the present invention can be further configured such that: a guide rail is provided on the fixing box, the right-angle rod is connected to the semicircular piece, and the right-angle rod slides in cooperation with the guide rail to guide the movement trajectory of the semicircular piece and the arc-shaped ice shard.

[0018] By adopting the above technical solution, the movement trajectory of the semicircular piece and the arc-shaped ice crusher is guided by the sliding cooperation of the right-angle rod and the guide rail. The movement path of the arc-shaped ice crusher can be segmented and its attitude constrained, so that the arc-shaped ice crusher maintains the preset squeezing angle and running direction when it contacts the surface of the conductor, and maintains a stable contact trajectory during the movement of the slide frame, reducing ineffective friction and uneven wear, and ensuring stable output of the ice-breaking action.

[0019] In one example, the present invention can be further configured as follows: a second telescopic rod is connected to the second slider, the ice-shoveling half-ring is connected to the second telescopic rod, the second extrusion wheel is rotatably mounted on the second telescopic rod, and the second spring is used to provide a reset force to the ice-shoveling half-ring so that when the second extrusion wheel rolls and extrudes along the extrusion strip, it drives the ice-shoveling half-ring to adhere to the outer surface of the wire to be tested and remove it.

[0020] By adopting the above technical solution, the second extrusion wheel rolls and extrudes along the extrusion strip, and the ice-scraping half-ring is driven to stick to the outer surface of the conductor for scraping under the action of the second spring. This allows the ice-scraping half-ring to maintain its sticking state to the outer surface of the conductor during axial movement, thereby continuously scraping the broken ice shell away from the surface of the conductor, reducing the impact of residual ice fragments on the closure of the half-ring magnet and current monitoring, and enabling the scraping action to have a rebound and reset capability, which facilitates maintaining stable sticking and continuous movement during multiple reciprocating operations.

[0021] In one example, the present invention can be further configured as follows: an upper rotating rod and a lower rotating rod are provided inside the fixed box; the output shaft of the drive motor is connected to the lower rotating rod; a first gear is connected to the lower rotating rod; a second gear is connected to the upper rotating rod; a first toothed belt is connected between the first gear and the second gear; a third gear is connected to the upper rotating rod; a fourth gear is connected to the screw; and a second toothed belt is connected between the third gear and the fourth gear, so that the drive motor drives the screw to rotate.

[0022] By adopting the above technical solution, the upper rotating rod is driven by the drive motor through the lower rotating rod, the first gear and the first toothed belt, and then the screw is driven to rotate by the third gear, the second toothed belt and the fourth gear. This enables the continuous transmission and linkage output of the drive motor power to the screw, thereby ensuring smoother screw rotation, clearer transmission relationship, and more stable axial movement output of the first slider. It also reduces movement jitter caused by discontinuous transmission and facilitates the synchronous operation of each actuator.

[0023] In a second aspect, the present invention provides a portable medium-voltage carrier line detection method, the method comprising: Obtain the positioning status information of the conductor under test entering the wire groove, and obtain the conductor under test after positioning; Based on the positioned test conductor, ice shell squeezing and crushing control is executed, so that the arc-shaped ice crushing strip squeezes and crushes the ice shell on the surface of the positioned test conductor to obtain the crushed ice shell; Based on the broken ice shell, ice shell removal control is executed, causing the ice removal half-ring to remove the broken ice shell, thereby obtaining the cleaned conductor to be tested; Based on the cleaned conductor to be tested, a semi-ring magnet closure control is performed to form a current-inducing magnetic ring, and an axial scanning current monitoring control is performed to obtain the current monitoring results.

[0024] By adopting the above technical solutions, and by acquiring the positioning status information of the conductor under test entering the cable tray and obtaining the positioned conductor under test, it is possible to confirm that the conductor under test is in a position where the operation can be performed before the detection process starts. This avoids the subsequent control being mistakenly triggered and the action becoming invalid if the conductor is not in place or is misaligned. By executing the ice shell crushing control, the arc-shaped ice crushing strip crushes the ice shell and obtains the crushed ice shell, which can transform the attached ice shell into an easily removable form, thereby reducing the interference of the ice shell on the subsequent removal and closing monitoring actions. By executing the ice shell removal control, the ice-removing half-ring removes the crushed ice shell and obtains the cleaned conductor under test, which can form an attachable outer surface state of the conductor, thereby providing stable contact conditions for the closed docking of the current sensing magnetic ring. By executing the half-ring magnet closing control to form the current sensing magnetic ring and executing the axial scanning current monitoring control to obtain the current monitoring results, it is possible to realize continuous monitoring and result output along the conductor axis, so that the current monitoring data can more easily reflect the changes in different sections of the conductor, which is convenient for subsequent analysis and recording. Attached Figure Description

[0025] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a schematic diagram of the signal acquisition device in an embodiment of the present invention; Figure 3 This is a schematic diagram of the ear plate structure in an embodiment of the present invention; Figure 4 This is a schematic diagram of the sliding frame structure in an embodiment of the present invention; Figure 5 This is a schematic diagram of the guide rail structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the arc-shaped ice shavings in an embodiment of the present invention; Figure 7 This is a schematic diagram of the screw structure in an embodiment of the present invention; Figure 8 This is a schematic diagram of the extrusion strip in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the second slider in an embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of the first slider in an embodiment of the present invention; Figure 11 This is a schematic diagram of the drive motor in an embodiment of the present invention; Figure 12This is a flowchart of a portable medium-voltage carrier line detection method according to an embodiment of the present invention.

[0026] Among them, 1. Insulating rod; 11. Signal collector; 12. Wire; 2. Fixing box; 21. Ear plate; 22. Wire groove; 23. Slide rod; 24. Screw; 25. First slider; 26. First telescopic rod; 27. Semi-ring magnet; 3. First spring; 31. First extrusion wheel; 32. Extrusion strip; 321. Extrusion outer section; 322. Extrusion inclined section; 323. Extrusion inner section; 4. Slide frame; 41. Slide groove; 42. Connecting rod; 43. Semi-circular piece; 44. 45. Arc-shaped ice crusher; 46. Guide wheel; 47. Guide rail; 48. Right-angle rod; 59. Guide folding rail; 60. Second slider; 51. Second telescopic rod; 52. Ice shovel half-ring; 53. Second spring; 54. Second extrusion wheel; 65. Upper rotating rod; 66. Rotating plate; 67. Connecting rod; 68. Third gear; 69. Fourth gear; 60. Second toothed belt; 71. Lower rotating rod; 72. First gear; 73. Second gear; 74. First toothed belt; 75. Drive motor. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0028] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0029] Example 1 In one embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 , Figure 9 and Figure 10As shown, this invention discloses a portable medium-voltage carrier line testing device, including an insulating rod 1, a signal acquisition unit 11, and a fixed box 2 mounted on the signal acquisition unit 11. The fixed box 2 serves as a mounting carrier for each actuator. A wire groove 22 is disposed in the fixed box 2 and forms a receiving channel that matches the shape of the conductor 12 to be tested, so that the conductor 12 to be tested forms a restricted placement posture after entering the wire groove 22 and maintains a stable relative position with the fixed box 2. A sliding rod 23 and a screw 24 are arranged on the fixed box 2 along the axial direction of the wire groove 22. The sliding rod 23 is used to provide linear motion guidance, and the screw 24 is used to provide axial transmission input. The screw 24 is connected to a drive motor 74, so that when the drive motor 74 starts, it can output a continuous rotational driving force to the screw 24. The device also includes a first slider 25, which slides with a slide rod 23 and drives a screw 24. When the drive motor 74 drives the screw 24 to rotate, the first slider 25 moves axially along the slide rod 23 under the transmission action of the screw 24 and keeps its direction of movement consistent with the axial direction of the wire groove 22. The device also includes a sliding frame 4, which is slidably connected to the fixed box 2 and located in the axial front region of the wire to be tested 12. This allows the sliding frame 4 to make relative displacement along the axial direction within the limited range of the fixed box 2. The sliding frame 4 is provided with an arc-shaped ice-crushing strip 44 and a guide wheel 45 that cooperates with the arc-shaped ice-crushing strip 44. The fixed box 2 is provided with a guide rail 48, so that the guide wheel 45 and the guide rail 48 form a cooperating constraint during the movement of the sliding frame 4, thereby causing the arc-shaped ice-crushing strip to move. The device includes a second slider 5, a second telescopic rod 51, and an ice-shoveling half-ring 52. The second slider 5 slides with the slider 23 and maintains a corresponding relationship with the test wire 12 in the axial direction. The ice-shoveling half-ring 52 is connected to the second slider 5 via the second telescopic rod 51. When the second slider 5 moves axially, it drives the ice-shoveling half-ring 52 to adhere to the outer surface of the test wire 12 and remove the broken ice shell, thereby gradually restoring the surface of the test wire 12 to an adherent state. The device also includes a first telescopic rod 26, a half-ring magnet 27, a first spring 3, a first extrusion wheel 31, and an extrusion strip 32. The half-ring magnet 27 is connected to the first slider 26 via the first telescopic rod 26. 5. The first extrusion wheel 31 cooperates with the extrusion strip 32, and the first spring 3 provides a reset force to the semi-ring magnet 27. During the movement of the first slider 25, the first extrusion wheel 31 rolls and extrudes along the extrusion strip 32, driving the semi-ring magnet 27 to close and connect, forming a current sensing magnetic ring. In the closed state, the current sensing magnetic ring moves axially along the slide bar 23 with the first slider 25 to perform axial scanning current monitoring of the conductor 12 under test. The signal acquisition device 11 collects the signal during the current monitoring process and uses it to form detection data. Through the above structure and movement cooperation, the device can sequentially complete the continuous execution of ice shell breaking, ice shell removal and current monitoring actions when the conductor 12 under test is under the positioning constraint state of the wire groove 22, and maintain the stability and continuity of the monitoring process.

[0030] Furthermore, such as Figure 3 and Figure 7 As shown, ear plates 21 are provided on both sides of the fixing box 2, forming a lateral support structure with the fixing box 2. The wire groove 22 is set on the fixing box 2 and located between the two ear plates 21, so that the wire to be tested 12 is within the lateral protection range of the ear plates 21 after entering the wire groove 22. The sliding rod 23 and the screw 24 are arranged along the axial direction of the wire groove 22, and the two ends of the sliding rod 23 and the screw 24 are respectively connected to the ear plates 21, so that the sliding rod 23 and the screw 24 form a two-end support assembly relationship on the fixing box 2 and are arranged parallel in the axial direction. The drive motor 74 drives the screw 24 During rotation, the screw 24 outputs axial driving force through the transmission cooperation with the first slider 25. The slide bar 23 guides and restricts the sliding process of the first slider 25, so that the first slider 25 moves stably along the axial direction of the groove 22 and is not prone to lateral deviation, and maintains the corresponding axial relationship with the wire to be tested 12. At the same time, the ear plate 21 constrains the connection between the two ends of the slide bar 23 and the screw 24, so that the axial movement structure in the fixed box 2 has a clear installation reference and guide path, thereby making the movement of the first slider 25 more stable and easy to keep axially synchronized with the subsequent execution components.

[0031] Furthermore, such as Figure 8 and Figure 10As shown, a first telescopic rod 26 is connected to the first slider 25. The first telescopic rod 26 provides a relative extension stroke during axial movement. The semi-ring magnet 27 is connected to the first telescopic rod 26 and moves relative to the conductor 12 under test along with the first telescopic rod 26. The first extrusion wheel 31 is rotatably mounted on the first telescopic rod 26, so that the first extrusion wheel 31 can form rolling contact on the surface of the extrusion strip 32 and output a stable extrusion action. The extrusion strip 32 is mounted on the ear plate 21 and arranged along the movement path of the first extrusion wheel 31, so that the first extrusion wheel 31 rolls and extrudes with the extrusion strip 32 when the first slider 25 moves axially along the slide rod 23. The first spring 3 provides a reset force to the semi-ring magnet 27, so that the relative stroke generated by the first telescopic rod 26 during extrusion can be restored during the return stroke. When the first slider 25 moves axially along the slide rod During axial movement, the first extrusion wheel 31 moves synchronously with the first telescopic rod 26 and gradually presses against the extrusion strip 32, causing the first telescopic rod 26 to generate a relative stroke and push the semi-ring magnet 27 to close towards the wire 12 to be tested. When the first extrusion wheel 31 rolls to the corresponding closed position, the semi-ring magnet 27 closes and docks to form a current-sensing magnetic ring and remains closed around the wire 12 to be tested, thus entering the working state of current monitoring. Under the reset action of the first spring 3, the semi-ring magnet 27 can reset with the first telescopic rod 26 during the return stroke and maintain the connection with the first slider 25, ensuring that the next closing action can still be performed according to the predetermined stroke. Through the combination of rolling extrusion and reset, the closing docking action of the semi-ring magnet 27 is clear and the action process is continuous, thus facilitating the formation of a current-sensing magnetic ring and cooperating with axial movement to complete current monitoring.

[0032] Furthermore, such as Figure 8 As shown, the extrusion bar 32 includes an outer extrusion section 321, an inclined extrusion section 322, and an inner extrusion section 323 connected in sequence. The outer extrusion section 321 provides initial contact and introduces the extrusion state, the inclined extrusion section 322 provides a transition section where the extrusion stroke gradually changes, and the inner extrusion section 323 provides a holding section after closure. When the first extrusion wheel 31 moves with the first slider 25, it first contacts the outer extrusion section 321 and enters a rolling extrusion state, causing the first telescopic rod 26 to start generating relative stroke and drive the semi-ring magnet 27 to move in the closing direction. As it rolls along the inclined extrusion section 322, it gradually changes its position relative to the first extrusion wheel 26. The compression stroke of the telescopic rod 26 causes the semi-ring magnet 27 to gradually advance and approach the corresponding position on the outer surface of the wire 12 to be tested. After continuing to roll to the inner compression section 323, it maintains the compression position on the first telescopic rod 26, thereby keeping the semi-ring magnet 27 closed and forming a current-inducing magnetic ring, and moving axially with the first slider 25 in the closed state. Through the segmented compression bar 32 structure, the rolling compression process of the first compression wheel 31 can form corresponding closing strokes and holding strokes in segments, thereby making the closing action of the semi-ring magnet 27 more continuous and the closed state more stable.

[0033] Furthermore, such as Figure 5 and Figure 6 As shown, the sliding frame 4 is provided with a sliding groove 41, which is used to limit the sliding direction and sliding range of the connecting rod 42. The connecting rod 42 is slidably connected in the sliding groove 41 and can generate relative displacement with the movement of the sliding frame 4. One end of the connecting rod 42 is connected to a semicircular piece 43, which serves as a support for the arc-shaped ice crusher 44 and keeps the arc-shaped ice crusher 44 in an arc-shaped conforming posture when it is close to the wire to be tested 12. The arc-shaped ice crusher 44 is connected to the semicircular piece 43. When the sliding frame 4 slides relative to the fixed box 2, the connecting rod 42 slides relative to the sliding groove 41, causing the position of the semicircular piece 43 relative to the sliding frame 4 to change, thereby driving the arc-shaped ice crusher 44 to move closer to the wire to be tested 12. At time 2, a contact posture matching the outer surface of the conductor is formed and a squeezing force is applied. During the movement of the sliding frame 4, the arc-shaped ice-breaking strip 44 continuously squeezes the ice shell on the surface of the conductor 12 under test and completes the crushing action. When the connecting rod 42 retracts in the sliding groove 41, the semi-circular piece 43 drives the arc-shaped ice-breaking strip 44 away from the outer surface of the conductor 12 under test, so that the arc-shaped ice-breaking strip 44 completes a cycle of approaching, squeezing and leaving, and provides a reset preparation for the next squeezing and crushing action. Through the sliding connection structure of the sliding groove 41, the connecting rod 42 and the semi-circular piece 43, the arc-shaped ice-breaking strip 44 forms a repeatable contact and separation process during the movement of the sliding frame 4, which facilitates the continuous execution of the ice shell squeezing and crushing action.

[0034] Furthermore, such as Figure 5 As shown, a guide rail 46 is provided on the fixed box 2. The guide rail 46 is arranged along the preset sliding direction of the sliding frame 4 to limit its movement path. The guide wheel 45 is rotatably set on the sliding frame 4 and is set in the direction of movement of the arc-shaped ice crusher 44, so that the guide wheel 45 can form a rolling engagement with the guide rail 46 during the movement of the sliding frame 4. The guide wheel 45 and the guide rail 46 slide to guide and limit the sliding path of the sliding frame 4. When the sliding frame 4 slides on the fixed box 2, the guide wheel 45 rolls along the guide rail 46 and limits the lateral displacement of the sliding frame 4, so that the movement direction of the sliding frame 4 is constrained by the guide rail 46 and remains stable. Thus, the arc-shaped ice crusher 44 maintains a corresponding spatial position relationship with the wire 12 to be tested during the movement of the sliding frame 4 and continuously completes the crushing action. Through the cooperation of the guide wheel 45 and the guide rail 46, the sliding frame 4 can still maintain a stable guide boundary during reciprocating motion or continuous motion, thereby ensuring that the ice-breaking trajectory of the arc-shaped ice crusher 44 is continuous and not easily deviated.

[0035] Furthermore, such as Figure 5 and Figure 6As shown, the fixed box 2 is provided with a guide rail 48, which forms a broken line path for trajectory guidance. A right-angle rod 47 is connected to the semicircular piece 43 and moves synchronously with the semicircular piece 43. The right-angle rod 47 slides in conjunction with the guide rail 48 to guide the movement trajectory of the semicircular piece 43 and the arc-shaped ice crusher 44. When the sliding frame 4 moves and causes the semicircular piece 43 to move, the right-angle rod 47 slides in the guide rail 48, causing the semicircular piece 43 to form different motion direction components at different positions and stages, thereby causing the arc-shaped ice crusher 44 to be crushed when it approaches the conductor 12 to be measured. The required entry path is formed, and a return path is formed when leaving the test guide 12; at the same time, the trajectory guidance process cooperates with the guidance and restriction of the guide wheel 45 and the guide rail 46 to keep the overall sliding direction of the sliding frame 4 stable, while the contact posture of the arc-shaped ice crusher 44 with the test guide 12 can change according to the folded track path, thus forming a motion process that better meets the requirements of the crushing action; through the trajectory constraint of the right angle rod 47 and the guide folded track 48, the three stages of approaching, squeezing and leaving the arc-shaped ice crusher 44 in the ice breaking process are clearer, thus facilitating the realization of continuous and stable ice shell crushing action.

[0036] Furthermore, such as Figure 8 and Figure 9 As shown, a second telescopic rod 51 is connected to the second slider 5. The second telescopic rod 51 provides a relative stroke for the ice-shoveling half-ring 52 to adhere and retract. The ice-shoveling half-ring 52 is connected to the second telescopic rod 51 and can form a shoveling action when it adheres to the outer surface of the wire to be tested 12. The second extrusion wheel 54 is rotatably mounted on the second telescopic rod 51, so that the second extrusion wheel 54 can roll along the extrusion strip 32 and output a stable extrusion stroke. The second spring 53 is used to provide a reset force for the ice-shoveling half-ring 52. When the second slider 5 moves axially along the slider 23, the second extrusion wheel 54 moves synchronously with the second telescopic rod 51 and rolls and extrudes along the extrusion strip 32, so that the second telescopic rod 51 generates a relative stroke and pushes the shovel. The ice half-ring 52 is attached to the direction of the test lead 12. In the attached state, the ice-scraping half-ring 52 moves axially with the second slider 5 to remove the broken ice shell and detach the residual ice shell from the outer surface of the test lead 12. During the return phase, the second spring 53 provides a reset force to the ice-scraping half-ring 52, so that the ice-scraping half-ring 52 is reset with the second telescopic rod 51 and maintains the connection and assembly relationship with the second slider 5, thereby forming a cyclic action of attachment and removal and return and reset. Through the rolling compression and reset cooperation of the second extrusion wheel 54 and the second spring 53, the ice-scraping half-ring 52 can be stably attached and removed during continuous axial movement, thereby forming a continuous connection with the breaking action of the arc-shaped ice-breaking strip 44.

[0037] Furthermore, such as Figure 3 and Figure 4 and Figure 11 As shown, Figure 3 and Figure 4 and Figure 11 As shown, the fixed box 2 is equipped with an upper rotating rod 6 and a lower rotating rod 7. The upper rotating rod 6 and the lower rotating rod 7 are used to realize the transmission and steering linkage of the power of the drive motor 74 inside the fixed box 2. The output shaft of the drive motor 74 is connected to the lower rotating rod 7, so that the lower rotating rod 7 rotates synchronously when the drive motor 74 starts. A first gear 71 is connected to the lower rotating rod 7, and a second gear 72 is connected to the upper rotating rod 6. A first toothed belt 73 is connected between the first gear 71 and the second gear 72, so that when the first gear 71 rotates, it drives the second gear 72 to rotate through the first toothed belt 73, thereby driving the upper rotating rod 6 to rotate synchronously. A third gear 63 is connected to the upper rotating rod 6, and a fourth gear 64 is connected to the screw 24. A second toothed belt 65 is connected between the third gear 63 and the fourth gear 64, so that the rotation of the upper rotating rod 6 can be transmitted to the fourth gear 64 through the third gear 63 and the second toothed belt 65, and drive the screw 24 to rotate. When the drive motor 74 starts, the lower rotating rod 7 rotates with the output shaft of the drive motor 74 and drives the first gear 71 to rotate. The first gear 71 drives the second gear 72 to rotate through the first toothed belt 73, causing the upper rotating rod 6 to rotate synchronously. The third gear 63 on the upper rotating rod 6 drives the fourth gear 64 to rotate through the second toothed belt 65, so that the screw 24 obtains rotation input and forms a transmission engagement with the first slider 25 to output axial driving force, thereby driving the first slider 25 to move axially along the slide rod 23. Through the transmission connection relationship formed by the upper rotating rod 6, the lower rotating rod 7, the first gear 71, the second gear 72, the first toothed belt 73, the third gear 63, the fourth gear 64 and the second toothed belt 65, the power of the drive motor 74 can be stably transmitted to the screw 24 and used to output the axial movement of the first slider 25, thereby providing a continuous displacement drive basis for the axial scanning current monitoring of the current sensing magnetic ring.

[0038] Example 2 like Figure 12 As shown, based on the same inventive concept as the above embodiments, the present invention also provides a portable medium-voltage carrier line detection method, comprising: S10: Obtain the positioning status information of the conductor under test entering the wire groove, and obtain the conductor under test after positioning.

[0039] Specifically, the positioning status information corresponding to the cable trough is acquired and parsed to determine whether the conductor under test has entered the cable trough and is in a detectable positioning state. The positioning status information includes at least a status field related to the entry state of the conductor under test and a status field related to the relative position of the conductor under test within the cable trough. When parsing the positioning status information, the combination result of the status fields is used to determine whether the conductor under test meets the entry and positioning conditions. When it is determined that the conductor under test meets the entry conditions, a positioning identifier corresponding to the conductor under test is generated and the current state of the positioning status information is recorded. The positioning identifier is used to indicate that the conductor under test has entered the cable trough and is in a detectable positioning state. The positioning identifier and the positioning status information are bound and stored to obtain the positioned conductor under test, providing a trigger basis for subsequent ice shell crushing control.

[0040] S20: Based on the positioned test conductor, execute the ice shell crushing control to crush the ice shell on the surface of the positioned test conductor with the arc-shaped ice crushing strip to obtain the crushed ice shell.

[0041] Specifically, based on the located test conductor, the ice shell crushing control process is triggered. The positioning identifier and the current state corresponding to the positioning status information are read. When the test conductor is in a detectable positioning state, the crushing action control is initiated. The arc-shaped ice crusher is controlled to perform a sequence of crushing, approaching and crushing actions relative to the located test conductor. During the crushing process, the action status of the arc-shaped ice crusher is continuously updated. The action status includes at least the execution status of the crushing action, the progress status of the crushing action, and the crushing coverage status corresponding to the test conductor. After the crushing action is determined to be completed, a crushing status identifier is generated and the crushed ice shell is output. The crushing status identifier is used to indicate that the ice shell on the surface of the test conductor has changed from an attached state to a crushed state. The crushing status identifier is associated with the positioning identifier to form a traceable crushing control result.

[0042] S30: Based on the broken ice shell, execute the ice shell removal control, so that the ice removal half ring removes the broken ice shell to obtain the cleaned test wire.

[0043] Specifically, the broken ice shell is used as the input object for ice shell removal control. Based on the broken state identifier, the removal action control of the ice removal half ring is triggered. The ice removal half ring is controlled to adhere to the outer surface of the conductor under test and perform axial removal processing, so that the broken ice shell is detached from the outer surface of the conductor under test under the action of removal. At the same time, the removal state during the removal process is recorded and updated. The removal state includes at least the attachment state, removal execution state, and cleaning and covering state. After determining that the removal action is completed and the outer surface of the conductor under test has reached the cleaning state, a cleaning state identifier is generated and the cleaned conductor under test is obtained. The cleaning state identifier is used to indicate that the outer surface of the conductor under test has been cleaned of the broken ice shell. The cleaning state identifier is associated with the positioning identifier and the broken state identifier and saved so that the subsequent current monitoring control can be triggered based on the cleaning state identifier.

[0044] S40: Based on the cleaned conductor to be tested, perform semi-ring magnet closure control to form a current-inducing magnetic ring, and perform axial scanning current monitoring control to obtain current monitoring results.

[0045] Specifically, based on the cleaned test conductor triggering the semi-ring magnet closure control, after reading the cleaned status identifier and confirming that the test conductor is in a cleaned state that can be closed for monitoring, the semi-ring magnet is controlled to complete the closure docking to form a current-sensing magnetic ring. After the current-sensing magnetic ring is formed, axial scanning current monitoring control is executed. The test conductor is continuously monitored for current according to the preset axial scanning sequence, and the status of the monitoring process is updated. The monitoring process includes at least the closed holding state of the current-sensing magnetic ring, the scanning position state, and the data acquisition state. The monitoring data acquired during the axial scanning process is summarized and a current monitoring result corresponding to the scanning position is generated and output. The current monitoring result includes at least the monitoring data set associated with the scanning position and its corresponding identification information. The current monitoring result is associated with the positioning identifier, the breakage status identifier, and the cleaned status identifier and stored to form a complete detection process record.

[0046] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A portable medium-voltage carrier line detection device, characterized in that, The device includes an insulating rod (1), a signal collector (11), and a fixing box (2) installed on the signal collector (11). The fixing box (2) is provided with a wire groove (22) for accommodating the wire (12) to be tested. The fixed box (2) is provided with a slide rod (23) and a screw rod (24) along the axial direction of the groove (22), and the screw rod (24) is connected to the drive motor (74) for transmission. The portable medium-voltage carrier line detection device further includes a first slider (25), which is slidably engaged with the slide rod (23) and driven by the screw (24). The drive motor (74) drives the screw (24) to rotate so as to move the first slider (25) along the axial direction of the slide rod (23). The portable medium-voltage carrier line detection device further includes a slide frame (4), which is slidably connected to the fixed box (2). The sliding frame (4) is provided with an arc-shaped ice crushing strip (44) and a guide wheel (45) that cooperates with the arc-shaped ice crushing strip (44). The fixed box (2) is provided with a guide rail (48) so that the arc-shaped ice crushing strip (44) can crush the ice shell on the surface of the wire to be tested (12) during the movement of the sliding frame (4). The portable medium-voltage carrier line detection device also includes a second slider (5), a second telescopic rod (51), and an ice-shoveling half-ring (52). The second slider (5) is slidably engaged with the slide rod (23), and the ice-shoveling half-ring (52) is connected to the second slider (5) through the second telescopic rod (51) so as to remove the broken ice shell as the second slider (5) moves along the axial direction of the slide rod (23). The portable medium-voltage carrier line detection device further includes a first telescopic rod (26), a semi-ring magnet (27), a first spring (3), a first extrusion wheel (31), and an extrusion strip (32). The semi-ring magnet (27) is connected to the first slider (25) through the first telescopic rod (26). The first extrusion wheel (31) cooperates with the extrusion strip (32), and the first spring (3) is used to provide a reset force to the semi-ring magnet (27) so that the semi-ring magnet (27) closes and connects with the wire under test (12) to form a current-sensing magnetic ring and monitors the current of the wire under test (12). The semi-ring magnet (27) moves axially along the slide bar (23) with the first slider (25) to perform axial scanning current monitoring on the conductor (12) under test in the closed state.

2. The portable medium-voltage carrier line detection device according to claim 1, characterized in that, The fixing box (2) is provided with ear plates (21) on both sides. The wire groove (22) is provided on the fixing box (2) and located between the two ear plates (21). The slide rod (23) and the screw (24) are arranged along the axial direction of the wire groove (22), and the two ends of the slide rod (23) and the screw (24) are respectively connected to the ear plates (21).

3. The portable medium-voltage carrier line detection device according to claim 2, characterized in that, The first slider (25) is connected to the first telescopic rod (26), the semi-ring magnet (27) is connected to the first telescopic rod (26), the first extrusion wheel (31) is rotatably mounted on the first telescopic rod (26), the extrusion strip (32) is mounted on the ear plate (21), and the first spring (3) is used to provide a reset force to the semi-ring magnet (27) so that the first extrusion wheel (31) drives the semi-ring magnet (27) to close and dock when it rolls and extrudes along the extrusion strip (32).

4. The portable medium-voltage carrier line detection device according to claim 3, characterized in that, The extrusion bar (32) includes an outer extrusion section (321), an inclined extrusion section (322), and an inner extrusion section (323) connected in sequence.

5. The portable medium-voltage carrier line detection device according to claim 1, characterized in that, The sliding frame (4) is provided with a sliding groove (41), and a connecting rod (42) is slidably connected in the sliding groove (41). One end of the connecting rod (42) is connected to a semi-circular piece (43), and an arc-shaped ice crushing strip (44) is connected to the semi-circular piece (43) so that the arc-shaped ice crushing strip (44) moves along the axial direction of the wire groove (22) with the sliding frame (4) to crush the ice shell on the surface of the wire (12) to be tested.

6. The portable medium-voltage carrier line detection device according to claim 5, characterized in that, The fixed box (2) is provided with a guide rail (46), and the guide wheel (45) is rotatably mounted on the slide frame (4). The guide wheel (45) and the guide rail (46) slide together to guide and restrict the slide frame (4) from moving axially along the groove (22).

7. The portable medium-voltage carrier line detection device according to claim 5, characterized in that, The fixed box (2) is provided with a guide rail (48), and the right angle rod (47) is connected to the semicircular piece (43). The right angle rod (47) and the guide rail (48) are slidably engaged to guide the movement trajectory of the semicircular piece (43) and the arc-shaped ice shard (44).

8. The portable medium-voltage carrier line detection device according to claim 1, characterized in that, The second slider (5) is connected to the second telescopic rod (51), the ice-shoveling half ring (52) is connected to the second telescopic rod (51), the second extrusion wheel (54) is rotatably mounted on the second telescopic rod (51), and the second spring (53) is used to provide a reset force to the ice-shoveling half ring (52) so that when the second extrusion wheel (54) rolls and extrudes along the extrusion strip (32), it drives the ice-shoveling half ring (52) to adhere to the outer surface of the wire (12) to be tested and remove it.

9. The portable medium-voltage carrier line detection device according to claim 1, characterized in that, The fixed box (2) is provided with an upper rotating rod (6) and a lower rotating rod (7). The output shaft of the drive motor (74) is connected to the lower rotating rod (7). A first gear (71) is connected to the lower rotating rod (7), and a second gear (72) is connected to the upper rotating rod (6). A first toothed belt (73) is connected between the first gear (71) and the second gear (72). A third gear (63) is connected to the upper rotating rod (6). A fourth gear (64) is connected to the screw (24). A second toothed belt (65) is connected between the third gear (63) and the fourth gear (64) so ​​that the drive motor (74) drives the screw (24) to rotate.

10. A method based on claim 1 The portable medium-voltage carrier line detection method according to any one of the following nine claims is characterized in that, The method includes: Obtain the positioning status information of the conductor under test entering the wire groove, and obtain the conductor under test after positioning; Based on the positioned test conductor, ice shell squeezing and crushing control is executed, so that the arc-shaped ice crushing strip squeezes and crushes the ice shell on the surface of the positioned test conductor to obtain the crushed ice shell; Based on the broken ice shell, ice shell removal control is executed, causing the ice removal half-ring to remove the broken ice shell, thereby obtaining the cleaned conductor to be tested; Based on the cleaned conductor to be tested, a semi-ring magnet closure control is performed to form a current-inducing magnetic ring, and an axial scanning current monitoring control is performed to obtain the current monitoring results.

Images