Low-voltage power grid fault detection device

Abstract

The utility model relates to the technical field of power grid fault detection, and discloses a low-voltage power grid fault detection device, which comprises a detector and a connecting wire, the side wall of the connecting wire is arranged on the side wall of the detector, the side wall of the detector is provided with a connecting assembly, the top of the detector is fixedly connected with a display panel, and the display panel is fixedly connected with a display screen. A hollow plate is fixedly connected to one end of the connecting line, a supporting plate is fixedly connected to the side wall of the hollow plate, a connecting plate is rotatably connected to the side wall of the supporting plate, and a pressing assembly is arranged on the side wall of the connecting plate; the pressing assembly comprises a rotating plate, and the side wall of the rotating plate is fixedly connected to the side wall of the connecting plate. According to the utility model, the rotating plate is pressed to drive the clamping plate to rotate, then the first spring is driven, then the first spring is contracted, and the elastic block on the side wall is driven by the movement of the clamping plate, so that the problems that the clamping jaw needs to be manually adjusted to adapt to cables with different wire diameters, and the time consumed for installation is increased are solved; and the diversity of the low-voltage power grid fault detection device is improved.

Description

Technical Field

[0001] This utility model relates to the field of power grid fault detection technology, and in particular to a low-voltage power grid fault detection device. Background Technology

[0002] A low-voltage power grid fault detection device is one of the core devices for ensuring the safe and stable operation of the distribution network. With the deepening of urban and rural power grid transformation and the popularization of distributed energy, the structure of low-voltage power grids is becoming increasingly complex, and the cable laying environment (such as indoor distribution cabinets, outdoor overhead lines, damp basements, etc.) is becoming increasingly diversified, which puts forward higher requirements for the rapid deployment capability, environmental adaptability and ease of operation of fault detection devices.

[0003] Existing low-voltage power grid fault detection devices typically employ fixed-specification grippers or manually adjustable clamping components. For example, some devices use screw-fastened grippers to secure cables, requiring operators to manually adjust the gripper spacing by tightening the screws according to the cable diameter. Other devices use snap-fit ​​mechanical structures, matching different wire diameters through pre-set multi-level slots, but the number of slots is limited and the adjustment range is fixed. The technical principles of these mechanical structures are mainly based on rigid contact and manual intervention, relying on the operator's experience and repeated adjustments. Their core lies in achieving physical clamping through mechanical limits, lacking the ability to dynamically sense and adaptively adjust to the cable diameter.

[0004] However, the manual adjustment mode of existing mechanical structures has significant limitations. When dealing with cables of various specifications in the power grid, operators need to frequently change the clamps or manually tighten the adjustment mechanism, resulting in long installation times for each test. This time consumption directly delays fault location and repair progress, especially in emergency fault diagnosis scenarios. In addition, the fixed slot structure cannot cover non-standard diameter cables, resulting in insufficient compatibility of the device with new flexible cables or cables with irregular cross-sections. Multiple sets of special clamps are required, increasing operation and maintenance costs and equipment carrying burden. Therefore, a low-voltage power grid fault detection device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a low-voltage power grid fault detection device, which aims to improve the problem of the existing technology requiring manual adjustment of the clamps to adapt to cables of different diameters, resulting in increased installation time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A low-voltage power grid fault detection device includes a detector and a connecting wire. The sidewall of the connecting wire is disposed on the sidewall of the detector. A connecting assembly is disposed on the sidewall of the detector. A display panel is fixedly connected to the top of the detector. A hollow plate is fixedly connected to one end of the connecting wire. A support plate is fixedly connected to the sidewall of the hollow plate. A connecting plate is rotatably connected to the sidewall of the support plate. A pressing assembly is disposed on the sidewall of the connecting plate.

[0008] The pressing assembly includes a rotating plate, the side wall of which is fixedly connected to the side wall of a connecting plate. One end of the connecting plate is fixedly connected to a clamping plate, the side wall of which is rotatably connected to the inner wall of a hollow plate. A first fixing post is fixedly connected to the side wall of the clamping plate, and a first spring is provided on the side wall of the first fixing post. One end of the first spring is fixedly connected to the side wall of the first fixing post, and the other end of the first spring is fixedly connected to the side wall of the first fixing post. An elastic block is fixedly connected to the side wall of the clamping plate.

[0009] As a further description of the above technical solution:

[0010] The connecting assembly includes a support ring, the sidewall of which is fixedly connected to the sidewall of the detector, and a first hollow column is fixedly connected to the inner wall of the support ring.

[0011] As a further description of the above technical solution:

[0012] A second hollow column is fixedly connected to the inner wall of the support ring, and a copper tube is slidably connected to the inner wall of the second hollow column.

[0013] As a further description of the above technical solution:

[0014] The copper tube is fixedly connected to a second fixing column on its side wall, and the outer wall of the second fixing column is slidably connected to the inner wall of the first hollow column.

[0015] As a further description of the above technical solution:

[0016] The inner wall of the first hollow column is provided with a retaining ball, the outer wall of the retaining ball is provided on the outer wall of the second fixed column, and a connecting line is fixedly connected to one end of the second fixed column.

[0017] As a further description of the above technical solution:

[0018] The outer wall of the second fixed column is fixedly connected to a first fixed ring, and the outer wall of the first fixed ring is fixedly connected to a third hollow column.

[0019] As a further description of the above technical solution:

[0020] A second spring is provided on the side wall of the first fixing ring. One end of the second spring is fixedly connected to the side wall of the first fixing ring, and the other end of the second spring is fixedly connected to the second fixing ring.

[0021] As a further description of the above technical solution:

[0022] The outer wall of the second fixing ring is fixedly connected to the inner wall of the third hollow column, and the inner wall of the third hollow column is disposed on the outer wall of the ball.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, pressing the rotating plate drives the clamping plate to rotate, which in turn drives the first spring. Then, the first spring is contracted, and the movement of the clamping plate drives the elastic block on the side wall, achieving the effect of adaptive clamping of the power grid cable. This solves the problem of needing to manually adjust the clamps to adapt to different cable diameters, which increases installation time and improves the versatility of low-voltage power grid fault detection devices.

[0025] 2. In this utility model, by pulling the third hollow column, the second fixing ring is driven to retract the second spring on the side wall. Then, the third hollow column moves and moves the locking ball, which then moves to the inner wall of the first hollow column to lock the second fixing column. This achieves the effect of quick disassembly of the connector, solving the problems of low maintenance efficiency and time-consuming operation: the need to use tools to disassemble the fixing bolts or clips, which increases the time for each maintenance, and improving the convenience of the low-voltage power grid fault detection device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a low-voltage power grid fault detection device proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the detector sidewall structure of a low-voltage power grid fault detection device proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the detector sidewall structure of a low-voltage power grid fault detection device proposed in this utility model;

[0029] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0031] Legend:

[0032] 1. Detector; 2. Display panel; 3. Connecting wire; 4. Support ring; 5. Hollow plate; 6. Rotating plate; 7. Connecting plate; 8. Support plate; 9. Clamping plate; 10. First fixed post; 11. First spring; 12. Elastic block; 13. First hollow column; 14. Second hollow column; 15. Copper tube; 16. Ball clamp; 17. Second fixed post; 18. First fixed ring; 19. Second fixed ring; 20. Second spring; 21. Third hollow column. Detailed Implementation

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

[0034] Reference Figure 1 , Figure 2 and Figure 4 The present invention provides an embodiment of a low-voltage power grid fault detection device, comprising a detector 1 and a connecting line 3. The side wall of the connecting line 3 is disposed on the side wall of the detector 1. A connecting component is disposed on the side wall of the detector 1. A display panel 2 is fixedly connected to the top of the detector 1. The display panel 2 is made of liquid crystal display screen material and is used to display detection data such as current, voltage, fault type, etc. in real time, so that the operator can intuitively obtain power grid status information. This is the prior art and will not be described in detail here. A hollow plate 5 is fixedly connected to one end of the connecting line 3. A support plate 8 is fixedly connected to the side wall of the hollow plate 5. A connecting plate 7 is rotatably connected to the side wall of the support plate 8. A pressing component is disposed on the side wall of the connecting plate 7.

[0035] The pressing assembly includes a rotating plate 6, which drives the connecting plate 7 to rotate around the support plate 8 by pressing, thereby converting the pressing force into the rotational power of the clamping plate 9 to trigger the clamping action. The side wall of the rotating plate 6 is fixedly connected to the side wall of the connecting plate 7, and the clamping plate 9 is fixedly connected to one end of the connecting plate 7. The clamping plate 9 is used to converge or expand during rotation, and works with the elastic block 12 to clamp the power grid cable. Through the linkage of the first fixed post 10 and the first spring 11, the clamping force is adaptively adjusted. The side wall of the clamping plate 9 is rotatably connected to the support plate 8. The inner wall of the hollow plate 5 and the side wall of the clamping plate 9 are fixedly connected to a first fixing post 10. A first spring 11 is provided on the side wall of the first fixing post 10. One end of the first spring 11 is fixedly connected to the side wall of the first fixing post 10, and the other end of the first spring 11 is fixedly connected to the side wall of the first fixing post 10. An elastic block 12 is fixedly connected to the side wall of the clamping plate 9. The elastic block 12 is made of rubber and is used to adapt to the cable surface through its own deformation, increase friction and buffer clamping force, enhance clamping stability, and at the same time avoid hard contact that could damage the cable insulation layer.

[0036] Reference Figure 1 , Figure 3 and Figure 5 The connecting assembly includes a support ring 4, whose sidewall is fixedly connected to the sidewall of the detector 1. A first hollow column 13 is fixedly connected to the inner wall of the support ring 4, and a second hollow column 14 is also fixedly connected to the inner wall of the support ring 4. A copper tube 15, made of conductive metal, is slidably connected to the inner wall of the second hollow column 14 to conduct the detection current. The copper tube 15, slidably connected to the inner wall of the second hollow column 14, works in conjunction with the movement of the second fixed column 17 to achieve electrical connection switching, combining conductivity and mechanical sliding compatibility. The second fixed column 17 is fixedly connected to the sidewall of the copper tube 15, and its outer wall is slidably connected to the inner wall of the first hollow column 13. A retaining ball 16 is provided on the inner wall of the first hollow column 13, embedded in an annular groove on the outer wall of the second fixed column 17. This automatically locks the relative position of the copper tube 15 and the second hollow column 14 when the connecting wire 3 is inserted, enabling quick connection. Disassembly is achieved by pulling the third hollow column 21 to disengage the retaining ball 16. The groove achieves a quick unlocking effect. The locking ball 16 is set on the outer wall of the second fixing post 17. One end of the second fixing post 17 is fixedly connected to the connecting line 3. The outer wall of the second fixing post 17 is fixedly connected to the first fixing ring 18. The outer wall of the first fixing ring 18 is fixedly connected to the third hollow post 21. The side wall of the first fixing ring 18 is provided with a second spring 20. One end of the second spring 20 is connected to the first fixing ring 18, and the other end abuts against the second fixing ring 19. It is used to compress the spring to store elastic potential energy when the third hollow post 21 is pulled. After disassembly, the spring resets and pushes the third hollow post 21 back to its position, ensuring that the locking state between the locking ball 16 and the second fixing post 17 can be automatically restored. One end of the second spring 20 is fixedly connected to the side wall of the first fixing ring 18, and the other end of the second spring 20 is fixedly connected to the second fixing ring 19. The outer wall of the second fixing ring 19 is fixedly connected to the inner wall of the third hollow post 21. The inner wall of the third hollow post 21 is set on the outer wall of the locking ball 16.

[0037] Working principle: When using the low-voltage power grid fault detection device and clamping the power grid cable, firstly, by pressing the rotating plate 6, the force on the rotating plate 6 will cause the connecting plate 7 on the side wall to rotate onto the side wall of the support plate 8. The support plate 8 is connected to the side wall of the hollow plate 5 and is limited. Then, during the rotation of the rotating plate 6, the clamping plate 9 on the side wall will be driven to rotate onto the inner wall of the hollow plate 5. During the movement of the clamping plate 9, the first fixing post 10 on the side wall will be driven to move. During the movement of the first fixing post 10, the first spring 11 on the side wall will be driven to contract. The contraction of the first spring 11 will drive the other clamping plate 9 to converge. During the movement of the clamping plate 9, the elastic block 12 on the side wall will be driven to converge, achieving the effect of adaptive clamping of the power grid cable.

[0038] Then, when quickly disassembling the connecting wire 3, first pull the third hollow column 21. The third hollow column 21 drives the second fixing ring 19 on the inner wall to move. Then, the movement of the second fixing ring 19 will cause the second spring 20 on the side wall to contract. Next, during the movement of the third hollow column 21, its inner wall will disengage from the side wall of the retaining ball 16. After the retaining ball 16 disengages, it will also disengage from the outer wall of the second fixing column 17. In summary, during the movement of the second fixing column 17, the copper tube 15 on the side wall will be driven to slide on the inner wall of the second hollow column 14, while the inner wall of the third hollow column 21 will disengage from the outer wall of the first hollow column 13, thus achieving the effect of quickly disassembling the connector.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A low-voltage power grid fault detection device, comprising a detector (1) and a connecting line (3), characterized in that: The sidewall of the connecting line (3) is set on the sidewall of the detector (1), the sidewall of the detector (1) is provided with a connecting component, the top of the detector (1) is fixedly connected with a display panel (2), one end of the connecting line (3) is fixedly connected with a hollow plate (5), the sidewall of the hollow plate (5) is fixedly connected with a support plate (8), the sidewall of the support plate (8) is rotatably connected with a connecting plate (7), and the sidewall of the connecting plate (7) is provided with a pressing component; The pressing assembly includes a rotating plate (6), the side wall of which is fixedly connected to the side wall of a connecting plate (7), a clamping plate (9) is fixedly connected to one end of the connecting plate (7), the side wall of the clamping plate (9) is rotatably connected to the inner wall of a hollow plate (5), a first fixing post (10) is fixedly connected to the side wall of the clamping plate (9), a first spring (11) is provided on the side wall of the first fixing post (10), one end of the first spring (11) is fixedly connected to the side wall of the first fixing post (10), the other end of the first spring (11) is fixedly connected to the side wall of the first fixing post (10), and an elastic block (12) is fixedly connected to the side wall of the clamping plate (9).

2. The low-voltage power grid fault detection device according to claim 1, characterized in that: The connecting assembly includes a support ring (4), the side wall of which is fixedly connected to the side wall of the detector (1), and the inner wall of the support ring (4) is fixedly connected to a first hollow column (13).

3. The low-voltage power grid fault detection device according to claim 2, characterized in that: The inner wall of the support ring (4) is fixedly connected to a second hollow column (14), and the inner wall of the second hollow column (14) is slidably connected to a copper tube (15).

4. The low-voltage power grid fault detection device according to claim 3, characterized in that: The copper tube (15) is fixedly connected to a second fixed column (17) on its side wall, and the outer wall of the second fixed column (17) is slidably connected to the inner wall of the first hollow column (13).

5. A low-voltage power grid fault detection device according to claim 4, characterized in that: The inner wall of the first hollow column (13) is provided with a ball (16), the outer wall of the ball (16) is provided on the outer wall of the second fixed column (17), and a connecting line (3) is fixedly connected to one end of the second fixed column (17).

6. A low-voltage power grid fault detection device according to claim 5, characterized in that: The outer wall of the second fixed column (17) is fixedly connected to the first fixed ring (18), and the outer wall of the first fixed ring (18) is fixedly connected to the third hollow column (21).

7. A low-voltage power grid fault detection device according to claim 6, characterized in that: The first fixing ring (18) has a second spring (20) on its side wall. One end of the second spring (20) is fixedly connected to the side wall of the first fixing ring (18), and the other end of the second spring (20) is fixedly connected to the second fixing ring (19).

8. A low-voltage power grid fault detection device according to claim 7, characterized in that: The outer wall of the second fixing ring (19) is fixedly connected to the inner wall of the third hollow column (21), and the inner wall of the third hollow column (21) is set on the outer wall of the ball (16).

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