A distributed fault monitoring device for power transmission lines

Abstract

This invention relates to the field of power transmission line inspection, and more particularly to a distributed fault monitoring device for power transmission lines. The device includes several monitoring boxes installed side-by-side on parallel power transmission lines. Each monitoring box comprises an upper shell and a lower shell, which together form a cavity through which the power transmission line passes. Control components are mounted at both ends inside the cavity, and a transmission component is located in the center of the cavity. An inner detection component and an outer detection component are respectively located on either side of the transmission component. The transmission component is simultaneously connected to the control component, the inner detection component, and the outer detection component. This invention can straighten and tension the power transmission line inside the shell, ensuring that the power transmission line remains stable and does not wobble during inspection, which is beneficial to the inspection process. The tensioning control process of the power transmission line is coordinated with the inspection process, effectively improving the inspection results and simultaneously achieving internal and external inspection of the power transmission line, resulting in high inspection efficiency.

Description

Technical Field

[0001] This invention relates to the field of power transmission line detection technology, and in particular to a distributed fault monitoring device for power transmission lines. Background Technology

[0002] A distributed fault monitoring device is a type of equipment used to detect potential faults in power transmission lines. It typically consists of sensors distributed along the transmission line. These sensors monitor changes in temperature and current parameters in real time and transmit the data to a centralized control system for analysis and processing. It can quickly detect and alert to any potential fault conditions, enabling maintenance personnel to take timely measures to repair or replace potentially faulty components, thereby ensuring the normal operation of the power transmission line.

[0003] Since power transmission lines are usually erected at high altitudes, they are prone to violent shaking in harsh weather conditions such as wind and rain. In such cases, fault monitoring devices will have difficulty detecting power transmission lines in a shaking state, resulting in poor environmental adaptability. Summary of the Invention

[0004] The purpose of this invention is to provide a distributed fault monitoring device for power transmission lines, which aims to solve the above-mentioned technical problems.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A distributed fault monitoring device for power transmission lines includes several sets of monitoring boxes installed side by side on parallel power transmission lines. Each monitoring box includes an upper shell and a lower shell, which together form a cavity shell through which the power transmission line passes. Control components are mounted at both ends inside the cavity shell, and a transmission component is located in the center of the cavity shell. An inner detection component and an outer detection component are respectively mounted on both sides of the transmission component. The transmission component is simultaneously connected to the control component, the inner detection component, and the outer detection component.

[0007] The control assembly includes a pair of side plates, with a pivot fixed in the center of the outer wall of each side plate. The pivot is rotatably engaged with the cavity housing. Tensioning drive wheels are symmetrically arranged between the side plates, and the power transmission line passes through the gap between the tensioning drive wheels.

[0008] The transmission assembly includes a pair of rotating shafts and a lifting plate disposed between the rotating shafts. The two ends of the rotating shafts are rotatably engaged with the lower housing. The two ends of the rotating shafts are connected to the corresponding pivots via transmission belts. Gears are fixed on the outer side of the rotating shafts. The two ends of the lifting plate are provided with tooth grooves, and the gears mesh with the tooth grooves.

[0009] The internal detection component includes a fixed end and a closed end of a Hall current sensor. The external detection component includes a fixed base, a lower pressure base, and a probe disposed inside the lower pressure base. The lifting plate drives the closed end of the Hall current sensor to close with the fixed end of the Hall current sensor to detect the current inside the transmission line. The lifting plate drives the lower pressure base to close with the fixed base to perform flaw detection on the surface of the transmission line through the probe.

[0010] As a further embodiment of the present invention: support arm one and support arm two are rotatably mounted on both sides of the upper housing, a sliding pin is fixed at the end of support arm one, and a sliding groove is provided through support arm two, and the sliding pin on support arm one is adapted to slide in the sliding groove on support arm two of the adjacent monitoring box.

[0011] As a further aspect of the present invention: the lower housing is fixedly provided with buckles on both sides for limiting and fixing the first support arm and the second support arm.

[0012] As a further embodiment of the present invention: mounting slides are symmetrically slidably installed on the side wall of the side plate, and the two ends of the tensioning drive wheel are rotatably engaged with the mounting slides. A drive motor is fixedly installed on the side wall of one of the mounting slides, and the output end of the drive motor is connected to the tensioning drive wheel. A connecting plate is fixedly installed on the mounting slide. A bidirectional screw is rotatably installed on one of the side plates. The bidirectional screw is driven to rotate by a clamping motor and threaded through the corresponding connecting plate. A guide rod is fixedly installed on the other side plate, and the guide rod slides through the corresponding connecting plate.

[0013] As a further embodiment of the present invention: an extension shell is provided at the bottom of the lower housing, a sliding groove is provided on the inner wall of the extension shell, the two sides of the lifting plate are slidably installed in the sliding groove, an electric lifting device is fixedly provided at the bottom of the extension shell, and the output end of the electric lifting device is fixedly connected to the bottom of the lifting plate.

[0014] As a further embodiment of the present invention: a top plate is fixedly provided at the top of the lifting plate, and support plates are fixedly provided on both sides of the top plate. A support rod is fixedly provided at the upper end of the support plate. One support rod slides through the fixed end of the Hall current sensor and is fixedly connected to the closed end of the Hall current sensor. The other support rod slides through the fixed seat and is fixedly connected to the lower pressure seat.

[0015] As a further embodiment of the present invention: the fixed end of the Hall current sensor is fixedly connected to the lower housing via a bracket, the closed end of the Hall current sensor is positioned directly above the fixed end of the Hall current sensor, a display screen is fixedly mounted on the surface of the upper housing, and one side of the closed end of the Hall current sensor is connected to the display screen via a wire.

[0016] As a further embodiment of the present invention: the fixed base is fixedly connected to the lower housing through bracket two, the lower pressure seat is positioned directly above the fixed base, the lower pressure seat has a movable cavity, the probe is movably installed in the movable cavity, a baffle is fixedly provided on the outside of the probe, a compression spring is provided between the upper end of the baffle and the movable cavity, an eddy current flaw detector is fixedly provided on the surface of the upper housing, and the probe is connected to the eddy current flaw detector through wire two.

[0017] As a further aspect of the present invention: the fixed end of the Hall current sensor is at the same height as the fixed base, and the closed end of the Hall current sensor is at the same height as the lower pressure base.

[0018] The beneficial effects of this invention are:

[0019] (1) By setting up control components and transmission components, in the walking state, the tension drive wheel clamps the transmission line from the upper and lower ends. As the tension drive wheel rotates, under the action of friction, the tension drive wheel will drive the entire shell to move along the transmission line, so that multiple transmission lines can be simultaneously distributed for multi-point detection. In the detection state, the lifting plate drives the rotating shaft to rotate through the gear, and the rotating shaft drives the pivot to rotate through the transmission belt. At this time, the two sets of tension drive wheels at both ends will deflect inward at the same time and straighten and tension the transmission line inside the shell, ensuring that the transmission line remains stable and does not shake during the detection, which is beneficial to the detection process.

[0020] (2) By setting up internal and external detection components, during the detection, the lifting plate moves downward and drives the tensioning drive wheel to control the tension of the transmission line. At the same time, the lifting plate will drive the closed end of the Hall current sensor and the lower pressure seat to close and fasten with the fixed end of the Hall current sensor and the fixed seat respectively. After the closed end of the Hall current sensor and the fixed end of the Hall current sensor are closed, the internal current of the transmission line will be detected. After the lower pressure seat and the fixed seat are closed, the probe will be used to detect the flaws on the surface of the transmission line. The tension control process of the transmission line and the detection process are coordinated and linked, which effectively improves the detection effect and realizes the internal and external detection of the transmission line at the same time, resulting in high detection efficiency. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 This is a schematic diagram of the upper and lower shells in this invention.

[0024] Figure 3 This is a schematic diagram of the internal structure of the lower shell in this invention.

[0025] Figure 4 This is a schematic diagram of the transmission component in this invention.

[0026] Figure 5 This is a schematic diagram of the control component in this invention.

[0027] Figure 6 This is a schematic diagram of the state of the transmission line under tension in this invention.

[0028] Figure 7 This is a schematic diagram of the internal detection component and the external detection component in this invention.

[0029] Figure 8 This is a schematic diagram of the top plate structure in this invention.

[0030] Figure 9 This is a schematic diagram of the probe structure in this invention.

[0031] Figure 10 This is a schematic diagram of the state during the detection process of this invention.

[0032] In the diagram: 1. Upper housing; 2. Lower housing; 3. Control assembly; 4. Transmission assembly; 5. Internal detection assembly; 6. External detection assembly; 11. Support arm one; 111. Sliding pin; 12. Support arm two; 121. Slide groove; 13. Eddy current flaw detector; 14. Display screen; 21. Buckle; 22. Extension shell; 221. Sliding groove; 23. Electric lifter; 31. Side plate; 32. Pivot; 33. Tensioning drive wheel; 34. Mounting slide; 35. Drive motor; 36. Connecting plate; 37. Clamping motor 38. Machine; 39. Bidirectional screw; 40. Guide rod; 41. Rotating shaft; 411. Gear; 42. Lifting plate; 421. Tooth groove; 43. Transmission belt; 44. Top plate; 441. Support plate; 442. Support rod; 51. Bracket one; 52. Hall current sensor fixed end; 53. Hall current sensor closed end; 54. Wire one; 61. Bracket two; 62. Fixed seat; 63. Lower pressure seat; 631. Movable cavity; 64. Probe; 641. Baffle; 642. Compression spring; 65. Wire two. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-3As shown, the present invention is a distributed fault monitoring device for power transmission lines, comprising several sets of monitoring boxes installed side by side on parallel power transmission lines. Each monitoring box includes an upper shell 1 and a lower shell 2, which together form a cavity shell through which the power transmission line passes. Control components 3 are mounted at both ends inside the cavity shell, and a transmission component 4 is mounted in the center of the cavity shell. An inner detection component 5 and an outer detection component 6 are mounted on both sides of the transmission component 4. The transmission component 4 is simultaneously connected to the control component 3, the inner detection component 5, and the outer detection component 6.

[0035] The upper housing 1 and the lower housing 2 are made of polyurethane rubber, which has high strength and high wear resistance. The upper housing 1 and the lower housing 2 are fixed together by bolts. At both ends of the upper housing 1 and the lower housing 2, there are semi-circular holes. After assembly, the semi-circular holes close to form limiting holes for the transmission lines to pass through.

[0036] like Figures 4-6 As shown, the control component 3 includes a pair of side plates 31. A pivot 32 is fixed in the center of the outer wall of the side plate 31. The pivot 32 is rotatably engaged with the cavity shell. Tensioning drive wheels 33 are symmetrically arranged between the side plates 31. The power transmission line passes through the gap between the tensioning drive wheels 33.

[0037] The transmission assembly 4 includes a pair of rotating shafts 41 and a lifting plate 42 disposed between the rotating shafts 41. The two ends of the rotating shafts 41 are rotatably engaged with the lower housing 2. The two ends of the rotating shafts 41 are connected to the corresponding pivots 32 via transmission belts 43. Gears 411 are fixed on the outside of the rotating shafts 41. The two ends of the lifting plate 42 are provided with tooth grooves 421, and the gears 411 mesh with the tooth grooves 421.

[0038] Specifically, by setting up control component 3 and transmission component 4, in the walking state, tension drive wheel 33 clamps the power transmission line from the upper and lower ends. As the tension drive wheel 33 rotates, under the action of friction, the tension drive wheel 33 will drive the entire housing to move along the power transmission line, so that multiple power transmission lines can be simultaneously detected at multiple points. In the detection state, lifting plate 42 drives rotating shaft 41 to rotate through gear 411. Rotating shaft 41 drives pivot 32 to rotate through transmission belt 43. At this time, the two sets of tension drive wheels 33 at both ends will deflect inward at the same time, and straighten and tension the power transmission line inside the housing, ensuring that the power transmission line remains stable and does not shake during the detection, which is beneficial to the detection process.

[0039] like Figure 7 and Figure 8As shown, the internal detection component 5 includes a Hall current sensor fixed end 52 and a Hall current sensor closed end 53, and the external detection component 6 includes a fixed base 62, a lower pressure base 63, and a probe 64 disposed inside the lower pressure base 63. The lifting plate 42 drives the Hall current sensor closed end 53 to close with the Hall current sensor fixed end 52 to detect the current inside the transmission line. The lifting plate 42 drives the lower pressure base 63 to close with the fixed base 62 to perform flaw detection on the surface of the transmission line through the probe 64.

[0040] Specifically, by setting up the internal detection component 5 and the external detection component 6, during the detection process, the lifting plate 42 moves downward, which drives the tensioning drive wheel 33 to control the tension of the transmission line. At the same time, the lifting plate 42 drives the Hall current sensor closed end 53 and the lower pressure seat 63 to close and fasten with the Hall current sensor fixed end 52 and the fixed seat 62, respectively. After the Hall current sensor closed end 53 and the Hall current sensor fixed end 52 are closed, the internal current of the transmission line will be detected. After the lower pressure seat 63 and the fixed seat 62 are closed, the probe 64 will perform flaw detection on the surface of the transmission line. The tension control process and the detection process of the transmission line are coordinated and linked, which effectively improves the detection effect and realizes the internal and external detection of the transmission line simultaneously, resulting in high detection efficiency.

[0041] like Figure 1 and Figure 2 As shown, support arm 11 and support arm 2 12 are rotatably mounted on both sides of the upper housing 1. Support arm 111 is fixed with a sliding pin 111 at its end. Support arm 2 12 is provided with a sliding groove 121. The sliding pin 111 on support arm 11 is adapted to slide in the sliding groove 121 on the support arm 2 12 of the adjacent monitoring box.

[0042] Furthermore, the lower housing 2 is fixedly provided with buckles 21 on both sides for limiting and fixing the first support arm 11 and the second support arm 12.

[0043] Specifically, when installing monitoring boxes side-by-side on multiple transmission lines, support arms 11 and 12 are opened from the clips 21, and the sliding pins 111 on support arm 11 are installed in the grooves 121 on the adjacent support arm 12. At this time, the monitoring boxes on adjacent transmission lines are mutually supported and linked. The monitoring boxes form a whole through the connection between support arms 111 and 12, which can maintain synchronous movement and effectively prevent the monitoring boxes from rotating. The sliding pins 111 can slide freely in the grooves 121 to adjust the installation spacing between adjacent monitoring boxes, thus allowing for flexible adjustment of the installation according to the spacing between adjacent transmission lines.

[0044] like Figure 5As shown, mounting slides 34 are symmetrically slidably mounted on the side wall of the side plate 31. The two ends of the tension drive wheel 33 are rotatably engaged with the mounting slides 34. A drive motor 35 is fixedly mounted on the side wall of one of the mounting slides 34. The output end of the drive motor 35 is connected to the tension drive wheel 33. A connecting plate 36 is fixedly mounted on the mounting slide 34. A bidirectional screw 38 is rotatably mounted on one of the side plates 31. The bidirectional screw 38 is driven to rotate by the clamping motor 37 and threaded through the corresponding connecting plate 36. A guide rod 39 is fixedly mounted on the other side plate 31. The guide rod 39 slides through the corresponding connecting plate 36.

[0045] Specifically, by setting tension drive wheels 33, when clamping motor 37 drives bidirectional screw 38 to rotate, the mounting slides 34 at the upper and lower ends will move towards each other, thereby adjusting the distance between tension drive wheels 33 to accommodate power transmission lines of different thicknesses. The power transmission line passes through the gap between the tension drive wheels 33. Clamping motor 37 controls the tension drive wheels 33 to move closer to each other until the power transmission line is clamped, ensuring that the tension drive wheels 33 are in close contact with the power transmission line. At this time, drive motor 35 drives one of the tension drive wheels 33 to start rotating, and under the action of friction, the entire housing can move along the power transmission line.

[0046] like Figure 4 , Figure 7 and Figure 8 As shown, the lower housing 2 extends downward to the bottom and is provided with an extension shell 22. A sliding groove 221 is provided on the inner wall of the extension shell 22. The lifting plate 42 is slidably installed in the sliding groove 221 on both sides. An electric lifter 23 is fixedly provided at the bottom of the extension shell 22. The output end of the electric lifter 23 is fixedly connected to the bottom of the lifting plate 42.

[0047] Furthermore, a top plate 44 is fixedly provided at the top of the lifting plate 42, and support plates 441 are fixedly provided on both sides of the top plate 44. Support rods 442 are fixedly provided at the upper end of the support plates 441. One support rod 442 slides through the fixed end 52 of the Hall current sensor and is fixedly connected to the closed end 53 of the Hall current sensor. The other support rod 442 slides through the fixed seat 62 and is fixedly connected to the lower pressure seat 63.

[0048] Specifically, when the electric lift 23 drives the lifting plate 42 to move upward, the support rods 442 on both sides will drive the Hall current sensor closed end 53 and the lower pressure seat 63 to move upward synchronously until the support plate 441 is blocked and limited by the Hall current sensor fixed end 52 and the fixed seat 62. When the electric lift 23 drives the lifting plate 42 to move downward, the support rods 442 will drive the Hall current sensor closed end 53 and the lower pressure seat 63 to descend synchronously until the Hall current sensor closed end 53 is fastened to the Hall current sensor fixed end 52, and at the same time the probe 64 presses against the surface of the power transmission line for detection.

[0049] like Figures 7-10As shown, the Hall current sensor fixed end 52 is fixedly connected to the lower housing 2 through bracket 51, and the Hall current sensor closed end 53 is positioned directly above the Hall current sensor fixed end 52. The upper housing 1 is fixedly provided with a display screen 14, and one side of the Hall current sensor closed end 53 is connected to the display screen 14 through wire 54.

[0050] Specifically, when the closed end 53 of the Hall current sensor is engaged with the fixed end 52 of the Hall current sensor, non-contact current sensing of the transmission line can be achieved through the Hall effect. The current sensing data will be transmitted to the display screen 14 through the first wire 54 for display and recording.

[0051] like Figures 7-10 As shown, the fixed base 62 is fixedly connected to the lower housing 2 via bracket 61. The lower pressure base 63 is positioned directly above the fixed base 62. The lower pressure base 63 has a movable cavity 631 inside. The probe 64 is movably installed in the movable cavity 631. A baffle 641 is fixedly provided on the outside of the probe 64. A compression spring 642 is provided between the upper end of the baffle 641 and the movable cavity 631. An eddy current flaw detector 13 is fixedly provided on the surface of the upper housing 1. The probe 64 is connected to the eddy current flaw detector 13 via wire 65.

[0052] Specifically, when the pressure seat 63 and the fixed seat 62 are engaged, the probe 64 will press tightly against the surface of the transmission line under the elastic force of the spring 642. The eddy current effect is used to detect defects on the surface of the transmission line, and the location, size and depth of the defects are determined by analyzing the changes in impedance or voltage. The detection signal will be transmitted to the eddy current flaw detector 13 through the second conductor 65 for processing and analysis.

[0053] like Figure 10 As shown, the Hall current sensor fixed end 52 and the fixed base 62 are at the same height, and the Hall current sensor closed end 53 and the lower pressure base 63 are also at the same height. This ensures that the closed end of the current sensor and the lower pressure base 63 can be fastened at the same time.

[0054] The working principle of this invention is as follows: Figures 1-10As shown, during use, multiple monitoring boxes are installed side by side on parallel power transmission lines. The clamping motor 37 controls the tensioning drive wheels 33 to approach each other until they clamp the power transmission lines, ensuring that the tensioning drive wheels 33 are in close contact with the power transmission lines. At this time, the drive motor 35 drives one of the tensioning drive wheels 33, and under the action of friction, the entire housing can move along the power transmission line, thereby enabling distributed detection of multiple power transmission lines at multiple points simultaneously. During testing, the monitoring box temporarily stops moving, and the electric lift 23 drives the lifting plate 42 to move downward. The lifting plate 42 drives the rotating shaft 41 to rotate through the gear 411. The rotating shaft 41 drives the pivot 32 to rotate through the transmission belt 43. At this time, the two sets of tensioning drive wheels 33 at both ends will deflect inward simultaneously, straightening and tensioning the transmission lines inside the housing. At the same time, the lifting plate 42 will drive the Hall current sensor closed end 53 and the lower pressure seat 63 to close and fasten with the Hall current sensor fixed end 52 and the fixed seat 62 respectively. After the Hall current sensor closed end 53 and the Hall current sensor fixed end 52 are closed, the current inside the transmission line will be detected. After the lower pressure seat 63 and the fixed seat 62 are closed, the probe 64 will perform flaw detection on the surface of the transmission line. The tensioning control process and the detection process of the transmission line are coordinated and linked, which effectively improves the detection effect and realizes the internal and external detection of the transmission line simultaneously, resulting in high detection efficiency.

[0055] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A distributed fault monitoring device for power transmission lines, comprising several sets of monitoring boxes installed side-by-side on parallel power transmission lines, characterized in that, The monitoring box includes an upper shell (1) and a lower shell (2). The upper shell (1) and the lower shell (2) together form a cavity shell through which the power transmission line passes. Control components (3) are provided at both ends inside the cavity shell. A transmission component (4) is provided in the center of the cavity shell. An inner detection component (5) and an outer detection component (6) are provided on both sides of the transmission component (4). The transmission component (4) is connected to the control component (3), the inner detection component (5) and the outer detection component (6) in a transmission manner. The control component (3) includes a pair of side plates (31), a pivot (32) is fixedly provided in the center of the outer wall of the side plate (31), the pivot (32) is rotatably engaged with the cavity shell, and tension drive wheels (33) are symmetrically arranged between the side plates (31), and the power transmission line passes through the gap between the tension drive wheels (33); The transmission assembly (4) includes a pair of rotating shafts (41) and a lifting plate (42) disposed between the rotating shafts (41). The two ends of the rotating shafts (41) are rotatably engaged with the lower housing (2). The two ends of the rotating shafts (41) are connected to the corresponding pivots (32) via transmission belts (43). Gears (411) are fixed on the outside of the rotating shafts (41). The two ends of the lifting plate (42) are provided with tooth grooves (421). The gears (411) mesh with the tooth grooves (421).

2. The distributed fault monitoring device for transmission lines according to claim 1, characterized in that, The internal detection component (5) includes a Hall current sensor fixed end (52) and a Hall current sensor closed end (53). The external detection component (6) includes a fixed base (62), a pressure base (63), and a probe (64) disposed inside the pressure base (63). The lifting plate (42) drives the Hall current sensor closed end (53) to close with the Hall current sensor fixed end (52) to detect the internal current of the transmission line. The lifting plate (42) drives the pressure base (63) to close with the fixed base (62) to perform flaw detection on the surface of the transmission line through the probe (64).

3. The distributed fault monitoring device for transmission lines according to claim 1, characterized in that, The upper housing (1) is rotatably mounted with a first support arm (11) and a second support arm (12) on both sides. The end of the first support arm (11) is fixed with a sliding pin (111), and the second support arm (12) is provided with a sliding groove (121). The sliding pin (111) on the first support arm (11) is adapted to slide in the sliding groove (121) on the second support arm (12) of the adjacent monitoring box.

4. The distributed fault monitoring device for transmission lines according to claim 3, characterized in that, The lower housing (2) is fixed with buckles (21) on both sides for limiting and fixing the first support arm (11) and the second support arm (12).

5. A distributed fault monitoring device for transmission lines according to claim 1, characterized in that, The side plate (31) is symmetrically and slidably mounted with mounting slides (34). The tension drive wheel (33) is rotatably engaged with the mounting slides (34) at both ends. A drive motor (35) is fixedly mounted on the side wall of one of the mounting slides (34). The output end of the drive motor (35) is connected to the tension drive wheel (33). A connecting plate (36) is fixedly mounted on the mounting slide (34). A bidirectional screw (38) is rotatably mounted on one of the side plates (31). The bidirectional screw (38) is driven to rotate by a clamping motor (37) and threaded through the corresponding connecting plate (36). A guide rod (39) is fixedly mounted on the other side plate (31). The guide rod (39) slides through the corresponding connecting plate (36).

6. A distributed fault monitoring device for transmission lines according to claim 2, characterized in that, The lower housing (2) extends downward to the bottom and is provided with an extension shell (22). A sliding groove (221) is provided on the inner wall of the extension shell (22). The lifting plate (42) is slidably installed in the sliding groove (221) on both sides. An electric lifter (23) is fixedly provided at the bottom of the extension shell (22). The output end of the electric lifter (23) is fixedly connected to the bottom of the lifting plate (42).

7. A distributed fault monitoring device for transmission lines according to claim 6, characterized in that, The top of the lifting plate (42) is fixedly provided with a top plate (44), and support plates (441) are fixedly provided on both sides of the top plate (44). Support rods (442) are fixedly provided on the upper end of the support plates (441). One support rod (442) slides through the fixed end (52) of the Hall current sensor and is fixedly connected to the closed end (53) of the Hall current sensor. The other support rod (442) slides through the fixed seat (62) and is fixedly connected to the lower pressure seat (63).

8. A distributed fault monitoring device for transmission lines according to claim 7, characterized in that, The Hall current sensor fixed end (52) is fixedly connected to the lower housing (2) through bracket one (51). The Hall current sensor closed end (53) is positioned directly above the Hall current sensor fixed end (52). The upper housing (1) is fixedly provided with a display screen (14). One side of the Hall current sensor closed end (53) is connected to the display screen (14) through wire one (54).

9. A distributed fault monitoring device for transmission lines according to claim 7, characterized in that, The fixed base (62) is fixedly connected to the lower housing (2) through the bracket two (61). The lower pressure base (63) is positioned directly above the fixed base (62). The lower pressure base (63) has a movable cavity (631) inside. The probe (64) is movably installed in the movable cavity (631). A baffle (641) is fixedly provided on the outside of the probe (64). A compression spring (642) is provided between the upper end of the baffle (641) and the movable cavity (631). An eddy current flaw detector (13) is fixedly provided on the surface of the upper housing (1). The probe (64) is connected to the eddy current flaw detector (13) through the wire two (65).

10. A distributed fault monitoring device for transmission lines according to claim 2, characterized in that, The fixed end (52) of the Hall current sensor is at the same height as the fixed base (62), and the closed end (53) of the Hall current sensor is at the same height as the pressure base (63).

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