Power distribution network fault monitoring device

Abstract

The invention relates to the technical field of power distribution network fault monitoring equipment, in particular to a power distribution network fault monitoring device which comprises a monitoring unit, an installation tool, locking mechanisms and a linkage driving mechanism, the monitoring unit comprises an upper shell and a lower shell, the installation tool comprises a supporting rod, the locking mechanisms are arranged on a butt joint plate and a supporting plate, and the linkage driving mechanism is arranged on the butt joint plate and the supporting plate. The linkage driving mechanism comprises an adjusting base arranged on the supporting rod in a sliding mode and an operation assembly driving the adjusting base to move along the supporting rod. An adjusting part and a pushing part are arranged on the adjusting seat; complex electrified high-altitude alignment and fixing steps are simplified by utilizing a mechanical linkage structure, so that the time consumed for fixing is remarkably shortened, the labor intensity and the operation difficulty of operators are reduced, that is, butt joint locking of the upper shell and the lower shell can be completed only by pushing the adjusting seat on the operation end to move upwards, and the operation efficiency is improved. And thus, the live-line installation efficiency of the power distribution network fault monitoring device is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of power distribution network fault monitoring equipment technology, and specifically to a power distribution network fault monitoring device. Background Technology

[0002] Distribution networks are characterized by a large number of lines, complex lines, and a large number of users. In actual operation, they are susceptible to lightning strikes, strong winds, tree obstructions, and improper electricity use by users, resulting in a large number of transient faults. Among them, the single-phase grounding fault rate is as high as 80%, and the fault points are very hidden, making it difficult to find on site. This leads to a long fault handling cycle in the distribution network and affects the reliability of power supply.

[0003] Existing distribution network line fault precise location system devices can realize the section location of distribution network faults, can realize grounding line and phase selection by transient fault characteristic time sequence, and can realize real-time pole-level location (<100 meters) of distribution network line fault points by adopting dual-end traveling wave positioning technology.

[0004] During installation, manual climbing is required. Using a long pole, the open positioning device is moved onto the overhead power line, and then the device is aligned with the power line to complete the installation. However, because it is a live installation, personnel cannot touch the power line or get too close. The installation of the positioning device relies entirely on remote operation using a long pole. Furthermore, traditional positioning devices open horizontally, requiring precise alignment when placed on the overhead power line, which is time-consuming and difficult to implement. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a power distribution network fault monitoring device. Through an optimized mechanical structure, the device achieves large-angle grasping and rapid self-locking, solving the problems of difficult alignment, time-consuming operation, and cumbersome operation during live installation in existing technologies. This enables safe and efficient assembly of the power distribution network line fault location device.

[0006] This invention is achieved through the following technical solution:

[0007] A power distribution network fault monitoring device, comprising:

[0008] The monitoring unit includes an upper housing and a lower housing, and one side of the upper housing and the lower housing are rotatably connected by a mating plate;

[0009] The installation tool includes a support rod, the top of which is provided with a plate for supporting the upper housing and a support part for supporting the lower housing;

[0010] A locking mechanism, which is provided at the docking plate and the support plate, is used to lock the upper and lower housings after they are closed;

[0011] A linkage drive mechanism includes an adjustment seat slidably disposed on the support rod and an operating component for driving the adjustment seat to move along the support rod;

[0012] The adjusting seat is provided with an adjusting part and a pushing part; the adjusting part cooperates with the upper housing and is used to adjust the opening and closing angle of the upper housing relative to the lower housing when the adjusting seat moves; the pushing part cooperates with the locking mechanism and is used to trigger the locking mechanism to lock when the adjusting seat moves to a predetermined position.

[0013] Optionally, a movable seat is fixed on the support rod, and the locking mechanism includes:

[0014] Openings formed in the docking plate and the support plate;

[0015] A self-locking part is provided on the movable seat, which passes through the through-hole and locks the two docking plates.

[0016] Optionally, the pushing part includes a pushing rod slidably mounted on the adjusting seat and a compression spring sleeved on the pushing rod; the bottom of the movable seat is provided with a docking rod that cooperates with the pushing rod; the pushing rod is used to push the movable seat and the self-locking part upward when the adjusting seat moves upward.

[0017] Optionally, the self-locking part includes a self-locking plate with two oblique openings; the mating plate has an installation groove communicating with the through opening, and a locking tongue and a locking spring are slidably installed in the installation groove; the locking tongue is engaged in the oblique opening after the self-locking plate is inserted into the through opening.

[0018] Optionally, the adjusting part includes an adjusting rod fixed on the adjusting seat, an adjusting plate is provided at the outer end of the mating plate of the upper housing, the adjusting plate is provided with a sliding opening for the adjusting rod to slide, and a limiting ball is provided at the top of the adjusting rod; the limiting ball abuts against the adjusting plate to limit the angle of the upper housing.

[0019] Optionally, the support includes a support plate fixed to a support rod and a bracket rotatably mounted on the support plate; the bracket supports the bottom of the lower housing, and a torsion spring is provided between the support plate and the bracket to keep the bracket horizontal; the support plate and the movable seat are magnetically connected.

[0020] Optionally, the adjusting seat is provided with a protrusion, which is configured to push the bracket to rotate and disengage from the lower housing after the adjusting seat is moved to the locking position.

[0021] Optionally, the operating component includes a plurality of support sleeves arranged along the axial direction of the support rod and an operating rod slidably inserted into the support sleeve; the top end of the operating rod abuts against the bottom of the adjusting seat, and the bottom end is connected to a push sleeve slidably sleeved on the support rod.

[0022] Optionally, the adjusting seat is magnetically connected to the uppermost support sleeve; the bottom of the support rod is provided with a handle, and both the handle and the push sleeve are made of insulating material.

[0023] Optionally, a track frame is fixed to the bottom of the docking plate, and the tray is slidably inserted into the track frame.

[0024] Compared with the prior art, the present invention has the following features and beneficial effects:

[0025] The present invention uses a rotating shaft to connect the upper and lower shell structures, and a sliding adjustment seat on the support rod; the adjustment seat integrates an adjustment part for controlling the tilt angle of the upper shell and a push part for driving the self-locking part to move upward and lock, and the bottom of the support rod is provided with an operating end for remotely driving the adjustment seat to move.

[0026] This invention, by setting an adjustment part on the adjustment seat and cooperating with a rotating docking plate, enables the upper shell to open at a large angle relative to the lower shell, thereby changing the situation where the parallel opening of the traditional device leads to alignment difficulties, making the device easier to dock with overhead power lines. By remotely driving the adjustment seat upward at the bottom of the support rod through the operating end, the pushing part can directly push the self-locking part into the passage and trigger the engagement of the locking tongue and the oblique opening, thus completing the automatic closing and locking of the upper and lower shells with only a unidirectional pushing operation.

[0027] Therefore, the device simplifies the complex high-altitude alignment and fixing steps of live equipment by using a mechanical linkage structure, which significantly shortens the fixing time and reduces the labor intensity and operation difficulty of the operators. That is, the upper and lower shells can be docked and locked by simply pushing the adjustment seat upward on the operating end, thereby greatly improving the live installation efficiency of the power distribution network fault monitoring device. Attached Figure Description

[0028] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0029] Figure 1 This is a schematic diagram of the overall connection between a power distribution network fault monitoring device and an overhead conductor according to the present invention.

[0030] Figure 2 This is a schematic diagram of the overall structure of a power distribution network fault monitoring device according to the present invention.

[0031] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0032] Figure 4 This is a front view of the overall structure of a power distribution network fault monitoring device according to the present invention.

[0033] Figure 5 This is a partial cross-sectional front view of the monitoring unit in the open state according to the present invention.

[0034] Figure 6 This is a partial cross-sectional front view of the monitoring unit according to the present invention in a locked state.

[0035] Figure 7 yes Figure 6 Enlarged view of section B in the middle.

[0036] Figure 8 This is a schematic diagram of the bracket detached from the lower housing according to the present invention.

[0037] Reference numerals: 1. Upper housing; 2. Lower housing; 3. Connecting plate; 4. Support rod; 5. Support plate; 6. Support part; 7. Moving seat; 8. Through port; 9. Self-locking part; 10. Adjusting seat; 11. Adjusting part; 12. Pushing part; 13. Operating end; 14. Support plate; 15. Bracket; 16. Self-locking plate; 17. Slanted opening; 18. Mounting groove; 19. Locking tongue; 20. Locking spring; 21. Adjusting rod; 22. Adjusting plate; 23. Limiting ball; 24. Pushing rod; 25. End; 26. Connecting rod; 27. Compression spring; 28. Protrusion; 29. ​​Support sleeve; 30. Operating rod; 31. Pushing sleeve; 32. Handle; 33. Track frame. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0039] It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0040] Where there is no conflict, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] like Figures 1 to 8 As shown, the present invention provides a power distribution network fault monitoring device, which mainly consists of a monitoring unit, an installation tool, a locking mechanism and a linkage drive mechanism.

[0043] The monitoring unit includes an upper shell 1 and a lower shell 2. The upper shell 1 and the lower shell 2 are rotatably connected on one side by a docking plate 3. The outer ends of the two docking plates 3 are rotatably connected by a rotating shaft, forming an opening and closing structure similar to a "shell".

[0044] The installation tool includes a support rod 4, the top of which is provided with a support plate 5 (contacting the upper housing 1 via a mating plate 3) for supporting the lower housing 2, and a support portion 6 for supporting the upper housing 1. During installation, the device can be stably held at the top of the support rod 4.

[0045] The locking mechanism is located at the docking plate 3 and the support plate 5 to lock the upper housing 1 and the lower housing 2 after they are closed, preventing them from loosening.

[0046] The linkage drive mechanism includes an adjustment seat 10 slidably disposed on the support rod 4 and an operating component for driving the adjustment seat 10 to move along the support rod 4;

[0047] The adjusting seat 10 is provided with an adjusting part 11 and a pushing part 12; the adjusting part 11 cooperates with the upper housing 1 and is used to adjust the opening and closing angle of the upper housing 1 relative to the lower housing 2 when the adjusting seat 10 moves; the pushing part 12 cooperates with the locking mechanism and is used to trigger the locking mechanism to lock when the adjusting seat 10 moves to a predetermined position.

[0048] When the adjusting seat 10 moves, the adjusting part 11 cooperates with the upper housing 1 to directly change the opening angle of the upper housing 1 relative to the lower housing 2 (for example, from open to closed).

[0049] When the adjusting seat 10 continues to move to the predetermined position, the pushing part 12 will interact with the locking mechanism to trigger the locking action.

[0050] Example 2

[0051] This embodiment provides a detailed description of the specific structure and operating principle of a power distribution network fault monitoring device.

[0052] Please see Figure 1 — Figure 4The diagram illustrates a power distribution network fault monitoring device, whose main structure comprises a monitoring unit and an installation tool. The monitoring unit includes an upper housing 1 and a lower housing 2. A docking plate 3 is fixed to the outer side of both housings, and the outer ends of the two docking plates 3 are rotatably connected via a pivot, forming an openable clamshell structure. The installation tool also includes a support rod 4. A support plate 5, which fits and conforms to the docking plate 3 on the lower housing 2, is fixed to the top of the support rod 4. A support part 6, which supports the bottom of the lower housing 2, is also fixed to the upper part of the support rod 4. A movable seat 7 is fixed to the support rod 4, and a through-hole 8 is provided on the docking plate 3 and the support plate 5. The movable seat 7 is equipped with a self-locking part 9 that fits into the through-hole 8 (forming the locking mechanism of this device). In addition, the device also includes a linkage drive mechanism, namely an adjustment seat 10 that slides on the outside of the support rod 4; the adjustment seat 10 is equipped with an adjustment part 11 for controlling the tilt angle adjustment of the upper housing 1 and the lower housing 2, and a pushing part 12 for pushing the self-locking part 9 upward. The bottom of the support rod 4 is equipped with an operating end 13 for driving the adjustment seat 10 upward along the rod body.

[0053] In this embodiment, an operating end 13 is designed on the support rod 4 to establish a remote mechanical linkage system. This allows personnel to directly hold the operating end at the bottom of the support rod 4 to remotely drive the adjustment part 11, thereby changing the angle between the upper shell 1 and the lower shell 2 (i.e., controlling their closure). This design makes it easier to slip the device onto overhead power lines when it is open. Subsequently, further operation can be achieved by moving the adjustment seat 10 upwards, causing the pushing part 12 and the self-locking part 9 to cooperate and firmly lock the upper shell 1 and the lower shell 2, completing the installation and fixation in one go. Compared with traditional installation methods that require multiple alignments and are complex to operate, this solution is faster and has a simpler and more efficient operating logic.

[0054] See Figure 2 — Figure 4 The support part 6 includes a support plate 14 fixed to the support rod 4, and a bracket 15 is rotatably mounted on the support plate 14 via a rotating rod. A torsion spring is fitted on the outer side of the rotating rod, configured to keep the bracket 15 horizontal in its normal state, thus stably supporting the bottom of the lower housing 2. To enhance the stability of the initial fixation, the adjacent ends of the support plate 14 and the movable seat 7 are magnetically attracted to each other, preventing the movable seat 7 from accidentally sliding. The front and rear ends of the bracket 15 are provided with end plates for abutting against the outer side of the lower housing 2, making the support of the lower housing 2 and the upper housing 1 more stable and preventing swaying at height. It should be noted that while the torsion spring installed on the outer side of the rotating rod ensures that the bracket 15 is in a horizontal support state, its elasticity allows the bracket 15 to overturn under external force. Figure 8As shown, when the outer end (lever end) of the bracket 15 is subjected to an upward force from below, it will overcome the spring torque and rotate downward along the rotating rod, thereby tilting the support surface, which facilitates the subsequent smooth removal of the bracket 15 from the lower housing 2 and the retraction of the installation tool.

[0055] See Figure 4 — Figure 7 The self-locking part 9, as the core locking component, includes a self-locking plate 16 that is adapted to the shape of the opening 8. The self-locking plate 16 and the top of the movable seat 7 are magnetically attracted to each other (to facilitate temporary connection during pushing and separation after locking). The self-locking plate 16 has two beveled openings 17, and the mating plate 3 has a mounting groove 18 that communicates with the opening 8. A locking tongue 19 adapted to the beveled opening 17 is slidably inserted into the mounting groove 18. A locking spring 20 that abuts against the locking tongue 19 is fixed in the mounting groove 18. The top of the self-locking plate 16 has a chamfer adapted to the locking tongue 19 to facilitate smooth insertion into the opening 8 and pushing open the locking tongue 19.

[0056] See Figure 5 — Figure 8 The pushing part 12 includes a pushing rod 24 slidably inserted into the adjusting seat 10. An end 25 is fixed to the outer end of the pushing rod 24, and a mating rod 26 adapted to the end 25 is fixed to the bottom of the moving seat 7. A compression spring 27 for pushing the end 25 upward is fitted onto the outer end of the pushing rod 24. Specifically, a protrusion 28 is also fixed to the adjusting seat 10. The position of the protrusion 28 is precisely configured so that, after the locking action is completed, it can adapt to and abut against the outer end of the bracket 15, thereby triggering the disengagement action of the bracket.

[0057] In this embodiment, the specific operational logic for locking the upper housing 1 and lower housing 2 by using the pushing part 12 to drive the self-locking part 9 upward is as follows: First, the adjusting seat 10 is moved upward along the support rod 4 by the operator controlling the operating end 13. The adjusting seat 10 drives the pushing rod 24 upward, and the pushing rod 24 flexibly presses the moving seat 7 through the compression spring 27, causing the self-locking plate 16 to move upward accordingly. Guided by the chamfer at the upper end of the self-locking plate 16, it passes through the through 8 on the support plate 5 and the through 8 of the two docking plates 3 in sequence. When pushed into place, the locking tongue 19 in the mounting groove 18 pops out laterally under the action of the locking spring 20 and engages with the inclined opening 17 of the self-locking plate 16. Under the action of the inclined opening 17 and the locking spring 20, the locking tongue 19 presses against the inclined opening 17, and the self-locking plate 16 forms a barb structure, stably locking the two docking plates 3, so that the upper housing 1 and lower housing 2 are stably fitted on the outside of the overhead wire, completing the self-locking installation. It should be noted that the mechanical timing design of this device ensures that the upper housing 1 and the lower housing 2 have already completed the locking action before the self-locking part 9 is moved upward by the pushing part 12 to perform the locking operation.

[0058] See Figure 3 — Figure 5 Regarding how the aforementioned "fastening action" is achieved: The adjusting part 11 includes an adjusting rod 21 fixed on the adjusting seat 10, and an adjusting plate 22 fixed at the outer end of the upper housing 1 connecting plate 3. The adjusting plate 22 has a sliding opening adapted to the adjusting rod 21. A limiting ball 23 that abuts against the adjusting plate 22 is fixed at the top of the adjusting rod 21. In the initial state, the limiting ball 23 presses against the adjusting plate 22 to keep the upper housing 1 open; when the adjusting seat 10 moves upward, the limiting ball 23 moves upward to release the pressure, and under the gravity of the upper housing 1 itself, the upper housing 1 will actively rotate around the pivot and fall down, completing the fastening operation with the lower housing 2, thus realizing the operation of fastening the upper housing 1 and the lower housing 2 to the outside of the overhead conductor.

[0059] See Figure 1 — Figure 4 The operating end 13 includes several support sleeves 29 fixed to the outside of the support rod 4. An operating rod 30 is slidably inserted into the support sleeve 29, and the outer end of the operating rod 30 is in contact with the bottom of the adjusting seat 10 to transmit thrust. In order to facilitate the initial contact and positioning of the adjusting seat 10 and the support sleeve 29, the adjusting seat 10 and the uppermost support sleeve 29 are designed to be magnetically attracted to each other. In order to facilitate the pushing operation of the operating rod 30 by ground personnel, a push sleeve 31 is fixed at the bottom of the operating rod 30. The push sleeve 31 slides on the outside of the support rod 4 for easy gripping and force application.

[0060] In this embodiment, a handle 32 is fixed to the bottom of the support rod 4 to facilitate gripping by personnel. Simultaneously, to improve insulation safety during live-line work, both the handle 32 and the push sleeve 31 are made of insulating material. During operation, the operator directly grips the handle 32, pushes the lower housing 2 near the overhead conductor, and then simply pushes the push sleeve 31 with one hand to move the operating rod 30 upward, correspondingly adjusting the adjusting seat 10 upward, thereby triggering a series of linked actions.

[0061] In this embodiment, the specific operation method for personnel climbing to install the power distribution network fault monitoring device includes the following steps:

[0062] First, personnel use climbing equipment to move to the area below the overhead power lines.

[0063] Then, the personnel hold handle 32 and push the lower housing 2 below the overhead conductor, so that the upper housing 1 is above the overhead conductor (at this time the device is in the open state).

[0064] Subsequently, the push sleeve 31 is pushed, causing the operating lever 30 to move upward, which in turn moves the adjusting seat 10 upward. In the initial stage of the upward movement of the adjusting seat 10, the adjusting lever 21 and the limiting ball 23 will move upward first, releasing the adjusting plate 22, so that the upper shell 1 falls under its own weight, completing the engagement with the lower shell 2, thereby achieving the effect of being sleeved on the outside of the overhead conductor (at this time, it is not yet locked).

[0065] Next, continue pushing the push sleeve 31, causing the operating lever 30 to move the adjusting seat 10 upwards. At this time, the pushing part 12 on the adjusting seat 10 begins to function, driving the self-locking plate 16 into the through port 8, and under the action of the locking spring 20, completing the locking operation between the locking tongue 19 and the inclined port 17, locking the device onto the wire.

[0066] Finally, the operator continues to push the push sleeve 31 (now nearing the end of its stroke). The self-locking plate 16 has moved into place and is locked. The push rod 24 slides within the adjusting seat 10 (compressing the spring 27). Simultaneously, the continued upward movement of the adjusting seat 10 causes the protrusion 28 to abut against the outer end of the bracket 15. The protrusion 28 lifts the outer end of the bracket 15, forcing the bracket 15 to overcome the spring torque and flip downwards, completing the tilt adjustment of the bracket 15 (i.e., the disengaged state). At this point, the support rod 4 is no longer bearing weight, and the operator moves the support rod 4 outwards to completely disengage the tray 5 from the docking plate 3, completing the installation.

[0067] See Figure 4 This embodiment further illustrates an optimized structure that improves the stability of the docking between the tray 5 and the docking plate 3, as well as the accuracy of the subsequent alignment of the opening 8, by adding a track frame 33 at the bottom of the docking plate 3.

[0068] The bottom of the docking plate 3 is fixed with a track frame 33 that matches the tray 5, and the tray 5 slides into the track frame 33. When the personnel attach the tray 5 to the docking plate 3, they directly insert the tray 5 into the track frame 33, thereby ensuring the stability of the docking and preventing lateral wobbling. This also allows for more precise alignment of the subsequent opening 8, ensuring that the self-locking plate 16 can be smoothly inserted. At the same time, in the final disengagement step, the tray 5 also slides out along the track frame 33, making the withdrawal action smoother.

[0069] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A power distribution network fault monitoring device, characterized in that, include: The monitoring unit includes an upper housing (1) and a lower housing (2), and one side of the upper housing (1) and the lower housing (2) are rotatably connected by a docking plate (3); The installation tool includes a support rod (4), the top of which is provided with a support plate (5) for supporting the upper housing (1) and a support part (6) for supporting the lower housing (2). A locking mechanism is provided at the docking plate (3) and the support plate (5) for locking the upper housing (1) and the lower housing (2) after they are closed. The linkage drive mechanism includes an adjustment seat (10) slidably disposed on the support rod (4) and an operating component that drives the adjustment seat (10) to move along the support rod (4); The adjusting seat (10) is provided with an adjusting part (11) and a pushing part (12); the adjusting part (11) cooperates with the upper housing (1) and is used to adjust the opening angle of the upper housing (1) relative to the lower housing (2) when the adjusting seat (10) moves; the pushing part (12) cooperates with the locking mechanism and is used to trigger the locking mechanism to lock when the adjusting seat (10) moves to a predetermined position.

2. The power distribution network fault monitoring device according to claim 1, characterized in that, A movable seat (7) is fixed on the support rod (4), and the locking mechanism includes: A through-hole (8) is provided on the docking plate (3) and the support plate (5); A self-locking part (9) is provided on the movable seat (7), the self-locking part (9) passes through the through-hole (8) and locks the two docking plates (3).

3. The power distribution network fault monitoring device according to claim 2, characterized in that, The pushing part (12) includes a pushing rod (24) slidably mounted on the adjusting seat (10) and a compression spring (27) sleeved on the pushing rod (24); the bottom of the moving seat (7) is provided with a docking rod (26) that cooperates with the pushing rod (24); the pushing rod (24) is used to push the moving seat (7) and the self-locking part (9) upward when the adjusting seat (10) moves upward.

4. The power distribution network fault monitoring device according to claim 2, characterized in that, The self-locking part (9) includes a self-locking plate (16), on which two oblique openings (17) are provided; the docking plate (3) has an installation groove (18) communicating with the through opening (8), and a locking tongue (19) and a locking spring (20) are slidably installed in the installation groove (18); the locking tongue (19) is engaged in the oblique opening (17) after the self-locking plate (16) is inserted into the through opening (8).

5. A power distribution network fault monitoring device according to claim 1, characterized in that, The adjustment part (11) includes an adjustment rod (21) fixed on the adjustment seat (10). The outer end of the docking plate (3) of the upper housing (1) is provided with an adjustment plate (22). The adjustment plate (22) is provided with a sliding opening for the adjustment rod (21) to slide. The top of the adjustment rod (21) is provided with a limiting ball (23). The limiting ball (23) abuts against the adjustment plate (22) to limit the angle of the upper housing (1).

6. A power distribution network fault monitoring device according to claim 2, characterized in that, The support part (6) includes a support plate (14) fixed on the support rod (4) and a bracket (15) rotatably mounted on the support plate (14); the bracket (15) supports the bottom of the lower housing (2), and a torsion spring is provided between the support plate (14) and the bracket (15) to keep the bracket (15) in a horizontal direction; the support plate (14) and the movable seat (7) are connected by magnetic attraction.

7. A power distribution network fault monitoring device according to claim 6, characterized in that, The adjusting seat (10) is provided with a protrusion (28), which is configured to push the bracket (15) to rotate and disengage from the lower housing (2) after the adjusting seat (10) is moved to the locking position.

8. A power distribution network fault monitoring device according to claim 1, characterized in that, The operating component includes several support sleeves (29) arranged axially along the support rod (4) and an operating rod (30) slidably inserted into the support sleeve (29); the top end of the operating rod (30) abuts against the bottom of the adjusting seat (10), and the bottom end is connected to a push sleeve (31) slidably sleeved on the support rod (4).

9. A power distribution network fault monitoring device according to claim 8, characterized in that, The adjusting seat (10) is connected to the uppermost support sleeve (29) by magnetic adsorption; the bottom of the support rod (4) is provided with a handle (32), and both the handle (32) and the push sleeve (31) are made of insulating material.

10. A power distribution network fault monitoring device according to claim 1, characterized in that, The bottom of the docking plate (3) is fixed with a track frame (33), and the tray (5) is slidably inserted into the track frame (33).

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