Portable graphene grounding grid conductivity on-line monitoring device
By using an N-shaped frame, a cross-shaped elastic frame, and a graphene conductive rubber plate clamping mechanism, the adaptability of existing grounding grid continuity testing devices to test points of different shapes has been solved, achieving stable clamping and accurate continuity monitoring.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN CENTURY YUANZHEN ELECTRIC TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-15
AI Technical Summary
Existing grounding grid continuity testing devices are difficult to adapt to test points of different shapes, resulting in limitations in their use. The clamping components are also difficult to meet the connection requirements of circular, square, and special shapes.
The clamping mechanism, which uses an n-type frame, a cross-shaped elastic frame, and a graphene conductive rubber plate, combined with a threaded rod and an adjustment mechanism, enables adaptive clamping of test points of different shapes and establishes a low-impedance electrical connection with the grounding grid through the graphene conductive rubber plate.
It achieves stable clamping of test points of various shapes, ensuring stable contact under vibration and external disturbances, and improving the accuracy and applicability of grounding grid continuity monitoring.
Smart Images
Figure CN224247771U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grounding grid continuity testing technology, specifically relating to a portable graphene grounding grid continuity online monitoring device. Background Technology
[0002] Grounding grid continuity testing is a test method used to test the electrical integrity of the grounding grid. In power systems, the grounding grid is one of the key facilities used to protect personnel and equipment from electrical accidents. The integrity and reliability of the grounding grid are crucial to the safe operation of the power system. Grounding grid continuity testing is conducted by detecting the electrical conductivity of the grounding grid to determine whether there are any poor electrical connections in the grounding grid.
[0003] The test requires specialized testing instruments. During the test, the testing instruments apply a certain current or voltage to the grounding grid and then measure parameters such as the resistance or conductivity of the grounding grid to determine whether the electrical connectivity of the grounding grid is normal.
[0004] Existing wiring devices for grounding grid continuity testing typically use test clips to connect to the grounding grid, clamp the test point of the grounding grid, and then pass current through it to observe the resistance value of the grounding grid.
[0005] For example, in the prior art, Chinese utility model patent with authorization announcement number CN222087738U discloses a "wiring device for grounding grid continuity testing", which includes a moving component, a lifting component, a sliding component, a protective component, a clamping component, and a testing component. Compared with the problem that the connection point of the traditional grounding grid continuity testing wiring device is easily loosened by external force vibration during testing, thus affecting the test results, the grounding grid continuity testing wiring device adopts an adjustable connection point angle and height method to keep the test clamp at a suitable clamping angle.
[0006] Existing testing devices, including those mentioned above, can clamp test points using clamping components. However, test points vary in shape depending on the scenario, commonly including circles, squares, rectangles, and some special shapes (such as L-shapes and T-shapes). Existing clamping components have difficulty meeting the connection requirements of test points of different shapes, resulting in significant limitations in their use.
[0007] To address the aforementioned issues, this invention proposes a portable online monitoring device for the conductivity of graphene grounding grids. Utility Model Content
[0008] To address the aforementioned problems in the existing technology, this utility model provides a portable online monitoring device for the conductivity of graphene grounding grids, which is convenient to use and has a wide range of applications.
[0009] To achieve the above objectives, this utility model provides the following technical solution: a portable graphene grounding grid continuity online monitoring device, comprising a base, a grounding grid continuity tester fixed to the top of the base, and a clamping mechanism, further comprising:
[0010] Two support frames are symmetrically fixed to the top surface of the base.
[0011] A rotating plate is rotatably mounted between two support frames using a rotating mechanism, and a clamping mechanism is mounted on the bottom side of the rotating plate;
[0012] An adjustment mechanism is used to adjust the working height of the clamping mechanism, wherein the clamping mechanism includes:
[0013] An n-shaped frame, wherein the n-shaped frame is connected to the rotating plate;
[0014] Two cross-shaped elastic frames are symmetrically distributed inside the n-shaped frame;
[0015] A graphene conductive rubber sheet is fixed on the cross-shaped elastic frame and connected to the grounding grid continuity tester using a cable.
[0016] The No. 1 threaded rod is installed on the vertical part of the n-shaped frame by means of thread engagement, and after passing through the vertical part of the n-shaped frame, the No. 1 threaded rod is rotatably connected to the cross-shaped elastic frame by bearing.
[0017] As a preferred embodiment of this utility model, the clamping mechanism further includes:
[0018] Knob No. 1 is fixed to the end of threaded rod No. 1 away from the cross-shaped elastic frame.
[0019] As a preferred embodiment of this utility model, the adjusting mechanism includes:
[0020] The second threaded rod is mounted on the rotating plate by means of thread engagement, and after passing through the rotating plate, the second threaded rod is rotatably connected to the n-type frame by bearing.
[0021] As a preferred embodiment of this utility model, the adjusting mechanism further includes:
[0022] The second knob is fixed to the end of the second threaded rod away from the n-type frame.
[0023] As a preferred embodiment of this utility model, the rotating mechanism includes:
[0024] Two rotating cylinders are symmetrically distributed, a rotating plate is fixed between the two rotating cylinders, and the rotating cylinders pass through the support frame to form a rotating structure;
[0025] A manual bolt is installed on the top of the support frame by means of thread engagement, and the bottom end of the manual bolt abuts against the outer wall of the rotating cylinder.
[0026] As a preferred embodiment of this utility model, a plurality of positioning grooves are provided on the outer wall of the rotating cylinder at equal intervals along the circumferential direction, and the bottom end of the manual bolt is embedded in the positioning groove.
[0027] As a preferred embodiment of this utility model, the rotating mechanism further includes:
[0028] A limiting plate is fixed on the rotating cylinder, and the outer wall of the limiting plate is attached to the support frame.
[0029] As a preferred embodiment of this utility model, it further includes:
[0030] Four locking casters are fixed diagonally to the four corners of the bottom surface of the base.
[0031] A handle, which is fixed to the top surface of the base.
[0032] Compared with the prior art, the beneficial effects of this utility model are:
[0033] In this invention, the clamping mechanism adopts an n-shaped frame, a cross-shaped elastic frame, and a graphene conductive rubber plate. The clamping force is adjusted by the first threaded rod, which can adapt to test points of various shapes such as circles and squares. The adjustment mechanism adjusts the clamping height by the second threaded rod, which is suitable for grounding grid test points of different heights.
[0034] Other additional advantages and beneficial effects of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this invention. Attached Figure Description
[0035] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0036] Figure 1 This is a schematic diagram of the structure of this utility model;
[0037] Figure 2 This is an isometric structural diagram of the clamping mechanism in this utility model;
[0038] Figure 3 This utility model Figure 1 A magnified schematic diagram of the rotating mechanism in the diagram;
[0039] Figure 4 This is a schematic diagram of the isometric structure of the rotating cylinder in this utility model.
[0040] In the diagram: 1. Base; 2. Lockable caster wheel; 3. Handle; 4. Grounding grid continuity tester; 5. Support frame; 6. Rotating plate; 7. Clamping mechanism; 71. N-shaped frame; 72. Cross-shaped elastic frame; 73. Graphene conductive rubber plate; 74. Threaded rod No. 1; 75. Knob No. 1; 8. Adjustment mechanism; 81. Threaded rod No. 2; 82. Knob No. 2; 9. Rotation mechanism; 91. Rotating cylinder; 911. Positioning groove; 912. Limiting plate; 92. Manual bolt. Detailed Implementation
[0041] 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.
[0042] Please see Figures 1-4 The present invention provides the following technical solution: a portable graphene grounding grid conductivity online monitoring device, including a base 1, a grounding grid conductivity tester 4 fixed on the top of the base 1 and a clamping mechanism 7, further including: two support frames 5, a rotating plate 6 and an adjustment mechanism 8, wherein the clamping mechanism 7 includes: an n-shaped frame 71, two cross-shaped elastic frames 72, a graphene conductive rubber plate 73 and a threaded rod 74.
[0043] Furthermore, by Figure 1 and Figure 2As shown, in this embodiment, two support frames 5 are symmetrically fixed to the top surface of the base 1. The rotating plate 6 is rotatably installed between the two support frames 5 using the rotating mechanism 9. The clamping mechanism 7 is installed on the bottom side of the rotating plate 6. The adjusting mechanism 8 is used to adjust the working height of the clamping mechanism 7. The n-shaped frame 71 is connected to the rotating plate 6. Two cross-shaped elastic frames 72 are symmetrically distributed inside the n-shaped frame 71. The graphene conductive rubber plate 73 is fixed on the cross-shaped elastic frame 72 and connected to the grounding grid continuity tester 4 using a cable. The first threaded rod 74 is installed on the vertical part of the n-shaped frame 71 by thread engagement. After the first threaded rod 74 passes through the vertical part of the n-shaped frame 71, it is rotatably connected to the cross-shaped elastic frame 72 using a bearing. With the above scheme, when in use, the grounding grid continuity tester 4 evaluates the continuity performance by accurately measuring the DC resistance between the grounding bodies based on Ohm's law. The grounding grid continuity tester 4 applies a known constant current to the grounding body under test and measures the voltage drop between them, thereby calculating the continuity resistance using Ohm's law.
[0044] When the monitoring device arrives at the area of the grounding grid to be tested, it first drives the rotating plate 6 to make vertical lifting and lowering movements between the support frame 5 through the adjustment mechanism 8, and adjusts the clamping mechanism 7 to a horizontal position at the same height as the grounding grid to be tested point.
[0045] Subsequently, the rotating mechanism 9 allows the rotating plate 6 to rotate in the horizontal plane, so that the opening direction of the n-shaped frame 71 is aligned with the connecting conductor of the grounding grid, ensuring that the contact surface of the graphene conductive rubber plate 73 is perpendicular to the conductor surface, providing geometric conditions for subsequent contact adaptation.
[0046] After the clamping mechanism 7 is aligned with the point to be measured, the operator turns the No. 1 threaded rod 74 clockwise. The threaded section that passes through the vertical part of the n-shaped frame 71 pushes the cross-shaped elastic frame 72 to move inward through the bearing. The cross-shaped elastic frame 72 is flexible and made of insulating material, such as insulating plastic, and can adapt to the small bumps and depressions on the surface of the grounding grid conductor.
[0047] As the No. 1 threaded rod 74 is screwed in, the graphene conductive rubber plate 73 adheres to the conductor surface. The graphene conductive filler evenly distributed inside the graphene conductive rubber plate 73 forms a conductive path and establishes a low-impedance electrical connection with the grounding grid conductor. At this time, the preload of the cross-shaped elastic frame 72 is evenly distributed to the surrounding area of the graphene conductive rubber plate 73 through the cross structure, ensuring stable contact under external disturbances such as vibration and wind.
[0048] The constant current source module built into the grounding grid continuity tester 4 injects a DC test signal into the graphene conductive rubber plate 73 through a cable. The current flows into the grounding grid through the conductor contact surface of the graphene conductive rubber plate 73, and then flows back to the grounding grid continuity tester 4 through the common grounding terminal, forming a stable closed loop. By monitoring the voltage drop between them, the conduction resistance is calculated using Ohm's law, thereby realizing the monitoring of the grounding grid continuity performance.
[0049] Preferably, by Figure 1 and Figure 2 As shown, in this embodiment, the clamping mechanism 7 further includes: a first knob 75, which is fixed to the end of the first threaded rod 74 away from the cross-shaped elastic frame 72. With the above solution, during use, the first knob 75 provides a safe force application point for the operator, making it easy for the operator to rotate the first threaded rod 74, thereby causing the first threaded rod 74 to drive the cross-shaped elastic frame 72 and the graphene conductive rubber plate 73 to move under the threaded rotation action.
[0050] Optionally, by Figure 1 As shown, in this embodiment, the adjustment mechanism 8 includes a second threaded rod 81. The second threaded rod 81 is installed on the rotating plate 6 by a threaded engagement method, and the second threaded rod 81 passes through the rotating plate 6 and is rotatably connected to the n-type frame 71 by a bearing. With the above solution, when it is necessary to adjust the height of the clamping mechanism 7, the operator manually rotates the second threaded rod 81. Since the second threaded rod 81 is installed on the rotating plate 6 by a threaded engagement method, it drives the clamping mechanism 7 to move through the threaded engagement.
[0051] Preferably, by Figure 1 As shown in this embodiment, the adjustment mechanism 8 further includes a second knob 82, which is fixed to the end of the second threaded rod 81 away from the n-shaped frame 71. With the above solution, during use, the second knob 82 provides a safe force application point for the operator, making it easy for the operator to rotate the second threaded rod 81, thereby causing the second threaded rod 81 to drive the clamping mechanism 7 to move under the threaded rotation action.
[0052] Preferably, by Figure 1 , Figure 3 and Figure 4As shown in this embodiment, the rotating mechanism 9 includes two rotating cylinders 91 and a manual bolt 92. The two rotating cylinders 91 are symmetrically distributed, and the rotating plate 6 is fixed between the two rotating cylinders 91. The rotating cylinders 91 pass through the support frame 5 to form a rotating structure. The manual bolt 92 is installed on the top of the support frame 5 by thread engagement, and the bottom end of the manual bolt 92 abuts against the outer wall of the rotating cylinder 91. With the above solution, when it is necessary to adjust the tilt angle of the rotating plate 6 to adjust the tilt angle of the clamping mechanism 7, the operator first manually loosens the manual bolt 92, moves the rotating plate 6 to rotate, and the rotating plate 6 drives the rotating cylinder 91 to rotate.
[0053] After the rotating plate 6 is rotated to the appropriate angle, tighten the manual bolt 92 so that the bottom end of the manual bolt 92 abuts against the outer wall of the rotating cylinder 91 to lock the rotating cylinder 91 and ensure the stability of the rotating plate 6 after adjustment.
[0054] Preferably, by Figure 1 , Figure 3 and Figure 4 As shown in this embodiment, multiple positioning grooves 911 are equally spaced along the circumferential direction on the outer wall of the rotating cylinder 91. The bottom end of the manual bolt 92 is embedded in the positioning groove 911. With the above solution, when the manual bolt 92 is tightened during use, the bottom end of the manual bolt 92 is embedded in the positioning groove 911, forming a mechanical lock, which further improves the stability of the rotating plate 6 after adjustment and prevents the rotating plate 6 from rotating unexpectedly.
[0055] Preferably, by Figure 1 , Figure 3 and Figure 4 As shown in this embodiment, the rotating mechanism 9 further includes a limiting disk 912, which is fixed on the rotating cylinder 91, and the outer wall of the limiting disk 912 is attached to the support frame 5. With the above solution, when in use, the limiting disk 912 is used to mechanically limit the rotating plate 6, ensuring that the rotating plate 6 can only rotate inside the two support frames 5, avoiding lateral displacement or shaking of the rotating plate 6, and further improving the stability of the rotating plate 6.
[0056] Preferably, by Figure 1 As shown, in this embodiment, it further includes: four locking casters 2 and a handle 3. The four locking casters 2 are fixed diagonally at the four corners of the bottom surface of the base 1, and the handle 3 is fixed to the top surface of the base 1. With the above solution, when in use, the four locking casters 2 form four-point support for the base 1, ensuring the stability of the base 1 and facilitating the movement of the base 1 for use in different monitoring scenarios.
[0057] The handle 3 makes it easy for staff to move the base 1.
[0058] The circuit connection involved in this utility model is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. It belongs to the widely used prior art.
[0059] Components not described in detail in this article are existing technologies.
[0060] The working principle and usage process of this utility model are as follows: When using the grounding grid continuity online monitoring device of this utility model, the grounding grid continuity tester 4 is based on Ohm's law and evaluates the continuity performance by accurately measuring the DC resistance between the grounding bodies. The grounding grid continuity tester 4 applies a known constant current to the grounding body under test and measures the voltage drop between them, thereby calculating the continuity resistance using Ohm's law.
[0061] When the monitoring device arrives at the grounding grid area to be tested, it first drives the rotating plate 6 to make vertical lifting and lowering movements between the support frame 5 through the adjustment mechanism 8, and adjusts the clamping mechanism 7 to a horizontal position at the same height as the grounding grid to be tested.
[0062] Subsequently, the rotating mechanism 9 allows the rotating plate 6 to rotate in the horizontal plane, so that the opening direction of the n-shaped frame 71 is aligned with the connecting conductor of the grounding grid, ensuring that the contact surface of the graphene conductive rubber plate 73 is perpendicular to the conductor surface, providing geometric conditions for subsequent contact adaptation.
[0063] After the clamping mechanism 7 is aligned with the point to be tested, the operator turns the No. 1 threaded rod 74 clockwise. The threaded section that passes through the vertical part of the n-shaped frame 71 pushes the cross-shaped elastic frame 72 to move inward through the bearing. The cross-shaped elastic frame 72 is flexible and made of insulating material, such as insulating plastic. It can adapt to the tiny bumps and depressions on the surface of the grounding grid conductor. Combined with the flexible characteristics of the graphene conductive rubber plate 73, it can adapt to test points of various shapes such as round and square.
[0064] As the No. 1 threaded rod 74 is screwed in, the graphene conductive rubber plate 73 adheres to the conductor surface. The graphene conductive filler evenly distributed inside the graphene conductive rubber plate 73 forms a conductive path and establishes a low-impedance electrical connection with the grounding grid conductor. At this time, the preload of the cross-shaped elastic frame 72 is evenly distributed to the surrounding area of the graphene conductive rubber plate 73 through the cross structure, ensuring stable contact under external disturbances such as vibration and wind.
[0065] The constant current source module built into the grounding grid continuity tester 4 injects a DC test signal into the graphene conductive rubber plate 73 through a cable. The current flows into the grounding grid through the conductor contact surface of the graphene conductive rubber plate 73, and then flows back to the grounding grid continuity tester 4 through the common grounding terminal, forming a stable closed loop. By monitoring the voltage drop between them, the conduction resistance is calculated using Ohm's law, thereby realizing the monitoring of the grounding grid continuity performance.
[0066] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A portable graphene grounding grid continuity online monitoring device, comprising a base (1), a grounding grid continuity tester (4) fixed to the top of the base (1), and a clamping mechanism (7), characterized in that, Further includes: Two support frames (5) are symmetrically fixed to the top surface of the base (1); A rotating plate (6) is rotatably mounted between two support frames (5) by means of a rotating mechanism (9), and a clamping mechanism (7) is mounted on the bottom side of the rotating plate (6). An adjustment mechanism (8) is provided for adjusting the working height of the clamping mechanism (7), wherein the clamping mechanism (7) include: n-shaped frame (71), the n-shaped frame (71) is connected to the rotating plate (6); Two cross-shaped elastic frames (72) are symmetrically distributed inside the n-shaped frame (71); A graphene conductive rubber plate (73) is fixed on the cross-shaped elastic frame (72) and connected to the grounding grid continuity tester (4) by a cable. The first threaded rod (74) is installed on the vertical part of the n-type frame (71) by means of thread engagement, and the first threaded rod (74) passes through the vertical part of the n-type frame (71) and is rotatably connected to the cross-shaped elastic frame (72) by bearing.
2. The portable graphene grounding grid continuity online monitoring device according to claim 1, characterized in that: The clamping mechanism (7) further includes: Knob 1 (75) is fixed to the end of threaded rod 1 (74) away from cross-shaped elastic frame (72).
3. The portable graphene grounding grid continuity online monitoring device according to claim 1, characterized in that: The adjustment mechanism (8) includes: The second threaded rod (81) is installed on the rotating plate (6) by thread engagement, and the second threaded rod (81) passes through the rotating plate (6) and is rotatably connected to the n-type frame (71) by bearing.
4. The portable graphene grounding grid continuity online monitoring device according to claim 3, characterized in that: The adjustment mechanism (8) further includes: The second knob (82) is fixed to the end of the second threaded rod (81) away from the n-shaped frame (71).
5. The portable graphene grounding grid continuity online monitoring device according to claim 1, characterized in that: The rotating mechanism (9) includes: Two rotating cylinders (91) are symmetrically distributed, and the rotating plate (6) is fixed between the two rotating cylinders (91). The rotating cylinders (91) pass through the support frame (5) to form a rotating structure. Manual bolt (92) is installed on the top of the support frame (5) by means of thread engagement, and the bottom end of the manual bolt (92) abuts against the outer wall of the rotating cylinder (91).
6. The portable graphene grounding grid continuity online monitoring device according to claim 5, characterized in that: Multiple positioning grooves (911) are provided on the outer wall of the rotating cylinder (91) at equal intervals along the circumference, and the bottom end of the manual bolt (92) is embedded in the positioning groove (911).
7. The portable graphene grounding grid continuity online monitoring device according to claim 5, characterized in that: The rotating mechanism (9) further includes: The limiting plate (912) is fixed on the rotating cylinder (91), and the outer wall of the limiting plate (912) is attached to the support frame (5).
8. The portable graphene grounding grid continuity online monitoring device according to claim 1, characterized in that: Further includes: Four locking casters (2) are fixed diagonally to the four corners of the bottom surface of the base (1); Handle (3), which is fixed to the top surface of the base (1).