Distributed fault monitoring device for power transmission line

Abstract

The invention relates to the field of power transmission line detection, in particular to a power transmission line distributed fault monitoring device which comprises a plurality of groups of monitoring boxes installed on parallel power transmission lines side by side, each monitoring box comprises an upper shell and a lower shell, and the upper shells and the lower shells define a cavity shell for the power transmission lines to penetrate through from the center. Control assemblies are rotationally arranged at the two ends in the cavity shell, a transmission assembly is arranged in the center of the cavity shell, an inner detection assembly and an outer detection assembly are arranged on the two sides of the transmission assembly respectively, and the transmission assembly is in transmission connection with the control assemblies, the inner detection assembly and the outer detection assembly at the same time. According to the invention, the power transmission line in the shell can be straightened and tensioned, it is ensured that the power transmission line is always kept stable and does not shake during detection, cooperative linkage of the detection process, the tensioning control process of the power transmission line and the detection process is facilitated, the detection effect is effectively improved, internal and external detection of the power transmission line is synchronously realized, and the detection efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power transmission line detection, in particular to a power transmission line distributed fault monitoring device. BACKGROUND

[0002] The distributed fault monitoring device is a device for detecting possible faults in the power transmission line. It is usually composed of sensors distributed on the power transmission line, which can monitor the temperature and current parameter changes of the power transmission line in real time and transmit data to the centralized control system for analysis and processing. It can quickly detect and alarm any potential fault condition, so that the operation and maintenance personnel can take timely measures to repair or replace the possible problem components, thereby ensuring the normal operation of the power transmission line.

[0003] Since the power transmission line is usually erected in the air, it is easy to sway violently in bad weather, so it is difficult for the fault monitoring device to detect the power transmission line in the swaying state, and the environmental adaptability is poor. SUMMARY

[0004] The purpose of the present application is to provide a power transmission line distributed fault monitoring device to solve the above technical problems.

[0005] The purpose of the present application can be achieved by the following technical solutions: A power transmission line distributed fault monitoring device, comprising a plurality of groups of monitoring boxes installed side by side on parallel power transmission lines, the monitoring box comprising an upper shell and a lower shell, the upper shell and the lower shell enclosing a cavity shell through which the power transmission line passes from the center, the cavity shell inside both ends being provided with a control assembly, the cavity shell being provided with a transmission assembly in the center, the transmission assembly being provided with an inner detection assembly and an outer detection assembly on both sides, and the transmission assembly being in transmission connection with the control assembly, the inner detection assembly and the outer detection assembly.

[0006] The control assembly comprises a pair of side plates, the side plates are provided with a pivot in the center of the outer wall, the pivot is in rotational cooperation with the cavity shell, and the side plates are provided with a tension drive wheel symmetrically above and below, and the power transmission line passes through the gap between the tension drive wheels.

[0007] The transmission assembly comprises a pair of rotating shafts and a lifting plate arranged between the rotating shafts, the rotating shafts are in rotational cooperation with the lower shell at both ends, the rotating shafts are connected with the corresponding pivots through transmission belts at both ends, the rotating shafts are provided with a gear outside, the lifting plate is provided with a gear slot at both ends, and the gear is in meshing with the gear slot.

[0008] The inner detection assembly comprises a Hall current sensor fixed end and a Hall current sensor closed end, the outer detection assembly comprises a fixed seat, a pressing seat and a probe arranged in the pressing seat, the lifting plate drives the Hall current sensor closed end to close with the Hall current sensor fixed end to detect the internal current of the power transmission line, and the lifting plate drives the pressing seat to close with the fixed seat to detect the surface of the power transmission line through the probe.

[0009] As a further scheme of the present application, the upper shell is rotatably provided with a first supporting arm and a second supporting arm on both sides, the first supporting arm is fixedly provided with a sliding pin, and the second supporting arm is provided with a sliding groove.

[0010] As a further scheme of the present application, the lower shell is fixedly provided with buckles for limiting and fixing the first supporting arm and the second supporting arm.

[0011] As a further scheme of the present application, the side plate is provided with a mounting sliding seat on the side wall, the two ends of the tensioning driving wheel are rotatably connected with the mounting sliding seat, one side wall of one mounting sliding seat is fixedly provided with a driving motor, the output end of the driving motor is connected with the tensioning driving wheel, the mounting sliding seat is fixedly provided with a connecting plate, a bidirectional screw rod is rotatably arranged on one side plate, the bidirectional screw rod is driven to rotate by a clamping motor and is threadedly penetrated through the corresponding connecting plate, a guide rod is fixedly arranged on the other side plate, and the guide rod is slidably penetrated through the corresponding connecting plate.

[0012] As a further scheme of the present application, the lower shell is provided with an extension shell extending downward, the inner wall of the extension shell is provided with a sliding groove, and the two sides of the lifting plate are slidably arranged in the sliding groove.

[0013] As a further scheme of the present application, the top end of the lifting plate is fixedly provided with a top plate, the two sides of the top plate are fixedly provided with supporting plates, the upper ends of the supporting plates are fixedly provided with supporting rods, one side of the supporting rod is slidably penetrated through the Hall current sensor fixed end and is fixedly connected with the Hall current sensor closed end, and the other side of the supporting rod is slidably penetrated through the fixed seat and is fixedly connected with the pressing seat.

[0014] As a further scheme of the present application, the Hall current sensor fixed end is fixedly connected with the lower shell through a bracket, the Hall current sensor closed end is opposite to the upper side of the Hall current sensor fixed end, the surface of the upper shell is fixedly provided with a display screen, and one side of the Hall current sensor closed end is connected with the display screen through a wire.

[0015] As a further scheme of the present application: the fixed seat is fixedly connected with the lower shell through the bracket two, the pressing seat is vertically arranged above the fixed seat, the movable cavity is arranged in the pressing seat, the probe is movably arranged in the movable cavity, the baffle is fixedly arranged outside the probe, the compression spring is arranged between the upper end of the baffle and the movable cavity, the eddy current flaw detector is fixedly arranged on the surface of the upper shell, and the probe is connected with the eddy current flaw detector through the lead two.

[0016] As a further scheme of the present application: the fixed seat is fixedly connected with the lower shell through the bracket two, the pressing seat is vertically arranged above the fixed seat, the movable cavity is arranged in the pressing seat, the probe is movably arranged in the movable cavity, the baffle is fixedly arranged outside the probe, the compression spring is arranged between the upper end of the baffle and the movable cavity, the eddy current flaw detector is fixedly arranged on the surface of the upper shell, and the probe is connected with the eddy current flaw detector through the lead two.

[0017] The present application has the following beneficial effects: (1) By setting the control assembly and the transmission assembly, in the walking state, the tensioning drive wheels clamp the power transmission lines from the upper and lower ends, and under the action of friction, the tensioning drive wheels drive the whole shell to move along the power transmission lines, so that the multiple power transmission lines can be synchronously detected at multiple points in a distributed manner, 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 groups of tensioning drive wheels at the two ends deflect inward at the same time, and the power transmission lines in the shell are straightened and tensioned, so that the power transmission lines can always remain stable and not shake during detection, which is beneficial to the detection process.

[0018] (2) By setting the inner detection assembly and the outer detection assembly, in the detection state, the lifting plate moves downward to drive the tensioning drive wheels to tension control the power transmission lines, and at the same time, the lifting plate drives the Hall current sensor closed end and the pressing seat to close and fasten with the Hall current sensor fixed end and the fixed seat respectively, after the Hall current sensor closed end and the Hall current sensor fixed end are closed, the internal current of the power transmission lines is detected, after the pressing seat and the fixed seat are closed, the probe detects the surface of the power transmission lines, the tensioning control process of the power transmission line and the detection process are coordinated and linked, the detection effect is effectively improved, and the internal and external detection of the power transmission line is realized at the same time, and the detection efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present application will be further described below in combination with the drawings.

[0020] Figure 1 It is the overall structure schematic diagram of the present application.

[0021] Figure 2 It is the structure schematic diagram of the upper shell and the lower shell in the present application.

[0022] Figure 3 It is the internal structure schematic diagram of the lower shell in the present application.

[0023] Figure 4is a structural schematic diagram of a transmission assembly in the present application.

[0024] Figure 5 is a structural schematic diagram of a control assembly in the present application.

[0025] Figure 6 is a state schematic diagram when a power transmission line is tensioned in the present application.

[0026] Figure 7 is a structural schematic diagram of an inner detection assembly and an outer detection assembly in the present application.

[0027] Figure 8 is a structural schematic diagram of a top plate in the present application.

[0028] Figure 9 is a structural schematic diagram of a probe in the present application.

[0029] Figure 10 is a state schematic diagram when detection is performed in the present application.

[0030] In the figure: 1, upper shell; 2, lower shell; 3, control assembly; 4, transmission assembly; 5, inner detection assembly; 6, outer detection assembly; 11, first support arm; 111, sliding pin; 12, second support arm; 121, sliding groove; 13, eddy current flaw detector; 14, display screen; 21, buckle; 22, extended shell; 221, sliding groove; 23, electric lifter; 31, side plate; 32, pivot; 33, tensioning drive wheel; 34, mounting sliding seat; 35, drive motor; 36, connecting plate; 37, clamping motor; 38, bidirectional screw; 39, 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, first support; 52, fixed end of Hall current sensor; 53, closed end of Hall current sensor; 54, first wire; 61, second support; 62, fixed seat; 63, pressing seat; 631, movable cavity; 64, probe; 641, baffle; 642, compression spring; 65, second wire. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] Please refer to Figures 1-3As shown, the present application is a power line distributed fault monitoring device, comprising a plurality of groups of monitoring boxes installed side by side on parallel power lines, the monitoring box comprising an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 enclosing a cavity shell for the power line to pass through the center, the cavity shell is rotatably provided with a control assembly 3 at both ends, a transmission assembly 4 is provided in the center of the cavity shell, and an inner detection assembly 5 and an outer detection assembly 6 are respectively provided on both sides of the transmission assembly 4. The transmission assembly 4 is simultaneously in transmission connection with the control assembly 3, the inner detection assembly 5 and the outer detection assembly 6.

[0033] Among them, the upper shell 1 and the lower shell 2 are made of polyurethane rubber material, which has the characteristics of high strength and high wear resistance. The upper shell 1 and the lower shell 2 are fixed by bolt assembly, and the two ends of the upper shell 1 and the lower shell 2 are provided with semicircular holes. After assembly, the semicircular holes are closed to form a limiting hole for the power line to pass through.

[0034] As shown in Figures 4-6 The control assembly 3 comprises a pair of side plates 31, a pivot 32 is fixedly arranged on the outer wall of the side plate 31, the pivot 32 is rotatably connected with the cavity shell, a tension drive wheel 33 is symmetrically arranged between the side plates 31, and the power line passes through the gap between the tension drive wheels 33.

[0035] The transmission assembly 4 comprises a pair of rotating shafts 41 and a lifting plate 42 arranged between the rotating shafts 41, the rotating shafts 41 are rotatably connected with the lower shell 2 at both ends, the rotating shafts 41 are connected with the corresponding pivots 32 through transmission belts 43 at both ends, gear wheels 411 are fixedly arranged on the outer side of the rotating shafts 41, and tooth grooves 421 are arranged at both ends of the lifting plate 42. The gear wheels 411 are engaged with the tooth grooves 421.

[0036] Specifically, by arranging the control assembly 3 and the transmission assembly 4, in the walking state, the tension drive wheels 33 clamp the power line from both ends, and under the action of friction, the tension drive wheels 33 drive the whole shell to move along the power line, so that multiple power lines can be synchronously detected by multiple points in a distributed manner. In the detection state, the lifting plate 42 drives the rotating shaft 41 to rotate through the gear wheel 411, and the rotating shaft 41 drives the pivot 32 to rotate through the transmission belt 43. At this time, the two groups of tension drive wheels 33 at both ends will deflect inward at the same time, and the power line inside the shell will be straightened and tensioned, so that the power line can always remain stable and not shake during detection, which is beneficial to the detection process.

[0037] As shown in Figure 7 and Figure 8As shown, the inner detection assembly 5 comprises a Hall current sensor fixed end 52 and a Hall current sensor closed end 53, the outer detection assembly 6 comprises a fixed seat 62, a pressing seat 63 and a probe 64 arranged inside the pressing seat 63, the lifting plate 42 drives the Hall current sensor closed end 53 to close the Hall current sensor fixed end 52 to detect the internal current of the power transmission line, and the lifting plate 42 drives the pressing seat 63 to close the fixed seat 62 to detect the surface of the power transmission line through the probe 64.

[0038] Specifically, by arranging the inner detection assembly 5 and the outer detection assembly 6, when detecting, the lifting plate 42 moves downward to drive the tensioning drive wheel 33 to control the tensioning of the power transmission line, and the lifting plate 42 drives the Hall current sensor closed end 53 and the pressing seat 63 to close and fasten the Hall current sensor fixed end 52 and the fixed seat 62 respectively. After the Hall current sensor closed end 53 closes the Hall current sensor fixed end 52, the internal current of the power transmission line is detected, and after the pressing seat 63 closes the fixed seat 62, the surface of the power transmission line is detected through the probe 64. The tensioning control process of the power transmission line is coordinated and linked with the detection process, effectively improving the detection effect, and simultaneously realizing the internal and external detection of the power transmission line, with high detection efficiency.

[0039] As shown in Figure 1 and Figure 2 The upper shell 1 is rotatably installed with a first arm 11 and a second arm 12 on both sides, the first arm 11 is fixedly provided with a sliding pin 111, and the second arm 12 is provided with a sliding groove 121. The sliding pin 111 on the first arm 11 is adapted to be slidingly installed in the sliding groove 121 on the second arm 12 of the adjacent monitoring box.

[0040] Further, the lower shell 2 is fixedly provided with buckles 21 for limiting and fixing the first arm 11 and the second arm 12.

[0041] Specifically, when installing the monitoring box on multiple power transmission lines side by side, the first arm 11 and the second arm 12 are opened from the buckles 21, and the sliding pin 111 on the first arm 11 is installed in the sliding groove 121 on the adjacent second arm 12. At this time, the monitoring boxes on the adjacent power transmission lines are supported and linked with each other, and the monitoring boxes form a whole through the connection between the first arm 11 and the second arm 12, which can keep synchronous movement and effectively avoid self-rotation of the monitoring box. The sliding pin 111 can freely slide in the sliding groove 121 to adjust the installation spacing between the adjacent monitoring boxes, so that the installation can be flexibly adjusted according to the spacing between the adjacent power transmission lines.

[0042] As shown in Figure 5As shown, the side plate 31 side wall symmetrically slidingly mounted with mounting slide 34, tension drive wheel 33 both ends with mounting slide 34 rotationally cooperates, one of mounting slide 34 side wall fixed with drive motor 35, drive motor 35 output end connected with tension drive wheel 33, mounting slide 34 fixed with connecting plate 36, one of side plate 31 rotatably mounted with bidirectional screw 38, bidirectional screw 38 driven by clamping motor 37 and threaded through the corresponding connecting plate 36, the other side plate 31 fixed with guide rod 39, guide rod 39 slidingly penetrates the corresponding connecting plate 36.

[0043] Specifically, by setting tension drive wheel 33, when the clamping motor 37 drives bidirectional screw 38 to rotate, the upper and lower ends of the mounting slide 34 will move towards each other, so as to adjust the distance between the tension drive wheels 33 to adapt to different thickness of power transmission line, power transmission line from the gap between the tension drive wheels 33, clamping motor 37 controls the tension drive wheel 33 close to each other until the power transmission line is clamped, ensure that the tension drive wheel 33 and power transmission line close contact, at this time the drive motor 35 drives one of the tension drive wheel 33 to start rotating, under the action of friction can drive the shell as a whole along the power transmission line.

[0044] As shown in Figure 4 , Figure 7 and Figure 8 , the lower shell 2 bottom extends downwardly provided with an extension shell 22, the inner wall of the extension shell 22 is provided with a sliding groove 221, the lifting plate 42 is slidingly installed on both sides of the sliding groove 221, the extension shell 22 bottom is fixedly provided with an electric lift 23, the output end of the electric lift 23 is fixedly connected with the bottom of the lifting plate 42.

[0045] Further, the lifting plate 42 top end is fixedly provided with a top plate 44, both sides of the top plate 44 are fixedly provided with a support plate 441, the support plate 441 upper end is fixedly provided with a support rod 442, one side of the support rod 442 slidingly penetrates the Hall current sensor fixed end 52 and is fixedly connected with the Hall current sensor closed end 53, the other side of the support rod 442 slidingly penetrates the fixed seat 62 and is fixedly connected with the pressing seat 63.

[0046] Specifically, when the electric lift 23 drives the lifting plate 42 to move upward, the two sides of the support rod 442 will drive the Hall current sensor closed end 53 and the pressing seat 63 to move upward synchronously, until the support plate 441 is blocked 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 rod 442 will drive the Hall current sensor closed end 53 and the pressing seat 63 to move downward synchronously, until the Hall current sensor closed end 53 is buckled on the Hall current sensor fixed end 52, at the same time the probe 64 is pressed against the surface of the power transmission line for detection.

[0047] As shown in Figures 7-10As shown, the Hall current sensor fixed end 52 is fixedly connected with the lower shell 2 through the support one 51, the Hall current sensor closed end 53 is opposite to the upper side of the Hall current sensor fixed end 52, the display screen 14 is fixedly arranged on the surface of the upper shell 1, and the Hall current sensor closed end 53 is connected with the display screen 14 through the wire one 54.

[0048] Specifically, when the Hall current sensor closed end 53 is buckled with the Hall current sensor fixed end 52, the power transmission line can be non-contact current sensing through the Hall effect, and the current sensing data is transmitted to the display screen 14 through the wire one 54 for display and recording.

[0049] As shown in the figure, Figures 7-10 The fixed seat 62 is fixedly connected with the lower shell 2 through the support two 61, the pressing seat 63 is opposite to the upper side of the fixed seat 62, the movable cavity 631 is arranged in the pressing seat 63, the probe 64 is movably arranged in the movable cavity 631, the baffle 641 is fixedly arranged on the outer side of the probe 64, the compression spring 642 is arranged between the upper end of the baffle 641 and the movable cavity 631, the eddy current flaw detector 13 is fixedly arranged on the surface of the upper shell 1, and the probe 64 is connected with the eddy current flaw detector 13 through the wire two 65.

[0050] Specifically, when the pressing seat 63 is buckled with the fixed seat 62, the probe 64 is tightly abutted on the surface of the power transmission line under the elastic force of the compression spring 642, the defects on the surface of the power transmission line are detected by using the eddy current effect, and the defect position, size and depth are judged by analyzing the change of impedance or voltage, and the detection signal is transmitted to the eddy current flaw detector 13 through the wire two 65 for processing and analysis.

[0051] As shown in the figure, Figure 10 The Hall current sensor fixed end 52 and the fixed seat 62 are at the same height, and the Hall current sensor closed end 53 and the pressing seat 63 are also at the same height, so that the current sensor closed end and the pressing seat 63 can be buckled at the same time.

[0052] The working principle of the application is as follows: Figures 1-10As shown, in use, a plurality of monitoring boxes are installed side by side on parallel power transmission lines, the clamping motor 37 controls the tension driving wheels 33 to move close to each other until the power transmission lines are clamped to ensure that the tension driving wheels 33 are in close contact with the power transmission lines, at this time the driving motor 35 drives one of the tension driving wheels 33, which can drive the entire housing to move along the power transmission lines under the action of friction, thereby enabling synchronous multi-point distributed detection of multiple power transmission lines. During detection, the monitoring box temporarily stops moving, 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, and the rotating shaft 41 drives the pivot 32 to rotate through the transmission belt 43, at this time the two sets of tension driving wheels 33 at both ends will simultaneously deflect inward and straighten and tension the power transmission lines inside the housing, at the same time the lifting plate 42 will drive the Hall current sensor closed end 53 and the pressing seat 63 to close and tighten 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 power transmission line will be detected, after the pressing seat 63 and the fixed seat 62 are closed, the probe 64 will detect the surface of the power transmission line, the tension control process of the power transmission line is coordinated and linked with the detection process, which effectively improves the detection effect and simultaneously realizes internal and external detection of the power transmission line, and the detection efficiency is high.

[0053] The above describes one embodiment of the present application in detail, but the above description is only a preferred embodiment of the present application and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made in accordance with the scope of the present application should still be within the scope of the present application.

Claims

1. A distributed fault monitoring device for power transmission lines, comprising a plurality of monitoring boxes installed side by side on parallel power transmission lines, characterized in that: The monitoring box comprises an upper shell (1) and a lower shell (2), wherein the upper shell (1) and the lower shell (2) are combined to form a cavity shell for a transmission line to pass through from the center, a control component (3) is provided at both ends of the cavity shell, a transmission component (4) is provided in the center of the cavity shell, an internal detection component (5) and an external detection component (6) are provided on both sides of the transmission component (4), and the transmission component (4) is simultaneously connected to the control component (3), the internal detection component (5) and the external detection component (6); The control assembly (3) includes a pair of side plates (31), a pivot (32) fixedly provided at the center of the outer wall of the side plates (31), the pivot (32) being rotatably engaged with the cavity shell, and tensioning drive wheels (33) being symmetrically provided between the side plates (31) in the upper and lower directions, with the transmission line passing through the gap between the tensioning drive wheels (33); The transmission assembly (4) includes a pair of rotating shafts (41) and a lifting plate (42) arranged between the rotating shafts (41). The two ends of the rotating shafts (41) are rotatably engaged with the lower shell (2). The two ends of the rotating shafts (41) are connected to the corresponding pivot shafts (32) through a transmission belt (43). A gear (411) is fixedly provided on the outside of the rotating shaft (41). The two ends of the lifting plate (42) are provided with tooth grooves (421), and the gear (411) is meshed with the tooth grooves (421).

2. A distributed fault monitoring device for power 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 seat (62), a lower pressure seat (63) and a probe (64) arranged inside the lower pressure seat (63); the lifting plate (42) drives the Hall current sensor closed end (53) and the Hall current sensor fixed end (52) to close to detect the internal current of the transmission line; the lifting plate (42) drives the lower pressure seat (63) and the fixed seat (62) to close to perform flaw detection on the surface of the transmission line through the probe (64).

3. A distributed fault monitoring device for power transmission lines according to claim 1, characterized in that: The upper shell (1) is rotatably mounted with a support arm (11) and a support arm (12) on both sides. A sliding pin (111) is fixedly provided at the end of the support arm (11). A sliding groove (121) is provided through the support arm (12). The sliding pin (111) on the support arm (11) is adapted to be slidably mounted in the sliding groove (121) on the support arm (12) of the adjacent monitoring box.

4. A distributed fault monitoring device for power transmission lines according to claim 3, characterized in that: Buckles (21) for limiting and fixing the first support arm (11) and the second support arm (12) are fixedly provided on both sides of the lower shell (2).

5. A distributed fault monitoring device for power transmission lines according to claim 1, characterized in that: A mounting slide (34) is symmetrically and slidably mounted on the side wall of the side plate (31), and both ends of the tensioning drive wheel (33) are rotatably matched with the mounting slide (34). A driving motor (35) is fixedly mounted on the side wall of one of the mounting slides (34), and the output end of the driving motor (35) is connected to the tensioning drive wheel (33). A connecting plate (36) is fixedly mounted on the mounting slide (34), and 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 is threadedly penetrated through the corresponding connecting plate (36). A guide rod (39) is fixedly mounted on the other side plate (31), and the guide rod (39) slides through the corresponding connecting plate (36).

6. A distributed fault monitoring device for power transmission lines according to claim 2, characterized in that: An extension shell (22) is provided at the bottom of the lower shell (2), and a sliding groove (221) is provided on the inner wall of the extension shell (22). Both sides of the lifting plate (42) are slidably installed in the sliding groove (221). An electric lifter (23) is fixedly provided at the bottom of the extension shell (22), and an 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 power transmission lines according to claim 6, characterized in that: A top plate (44) is fixedly provided at the top of the lifting plate (42), support plates (441) are fixedly provided on both sides of the top plate (44), and a support rod (442) is fixedly provided at the upper end of the support plate (441), the support rod (442) on one side 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, and the support rod (442) on the other side slides through the fixed seat (62) and is fixedly connected to the lower pressure seat (63).

8. A distributed fault monitoring device for power transmission lines according to claim 7, characterized in that: The Hall current sensor fixed end (52) is fixedly connected to the lower shell (2) via a bracket (51), and the Hall current sensor closed end (53) is arranged directly above the Hall current sensor fixed end (52). A display screen (14) is fixedly provided on the surface of the upper shell (1), and one side of the Hall current sensor closed end (53) is connected to the display screen (14) via a wire (54).

9. A distributed fault monitoring device for power transmission lines according to claim 7, characterized in that: The fixing seat (62) is fixedly connected to the lower shell (2) through the second bracket (61), the lower pressure seat (63) is arranged opposite to the upper part of the fixing seat (62), and a movable cavity (631) is arranged in the lower pressure seat (63). The probe (64) is movably installed in the movable cavity (631). A baffle (641) is fixedly provided on the outer side of the probe (64), and 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 shell (1), and the probe (64) is connected to the eddy current flaw detector (13) through the second wire (65).

10. A distributed fault monitoring device for power transmission lines according to claim 2, characterized in that: The Hall current sensor fixed end (52) and the fixed seat (62) are at the same height, and the Hall current sensor closed end (53) and the lower pressing seat (63) are also at the same height.

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