Grounding resistance measuring device in electric power operation and maintenance

Abstract

The utility model relates to the technical field of ground resistance measuring equipment, and discloses a ground resistance measuring device in electric power operation and maintenance, which comprises two operating handles, the two operating handles are rotatably connected through a connecting part, a cable is movably arranged in one operating handle and is led out from the lower end of the operating handle, and the other operating handle is connected with the connecting part. The upper ends of the two operation handles are fixedly provided with tong heads respectively, the opposite sides of the two tong heads are fixedly provided with two connectors respectively, each connector comprises a first installation base and a second installation base, and metal guide blocks are installed in the first installation bases and the second installation bases in a penetrating mode. The connecting ends of the two plier heads are respectively provided with two connectors, each connector is composed of a first installation base, a second installation base, an installation block, a top piece, an elastic band and the like, cables of different diameters can be clamped, and therefore a controller and a grounding nail can be manually operated conveniently, and meanwhile the installation blocks are matched with the top piece clamping structure, so that the installation efficiency is improved. And the elastic band and the arc-shaped clamping piece can be quickly replaced.

Description

Technical Field

[0001] This utility model relates to the technical field of grounding resistance measuring equipment, and in particular to a grounding resistance measuring device used in power operation and maintenance. Background Technology

[0002] Grounding resistance measurement is a key method for detecting the effectiveness of a grounding system. In the power and electronics fields, grounding is crucial, ensuring the safe operation of equipment and preventing the risk of electric shock to personnel. Grounding resistance measurement involves using specialized equipment to determine the resistance encountered when current flows into the earth through the grounding electrode. This value reflects the condition of the grounding system; excessive resistance indicates poor grounding and can easily lead to safety hazards.

[0003] Currently, most grounding resistance measuring devices on the market have relatively fixed clamp structures when connecting cables. Due to the limitations of the clamp connection method, in some measurement operations, it is necessary to pre-fit the measuring clamp onto the outside of the cable. However, some cables have small diameters, making it difficult to fit the measuring clamp into the appropriate position on the cable. Therefore, some temporary auxiliary methods are used to clamp the cable. This not only greatly reduces work efficiency, but also easily leads to inaccurate measurement data due to unstable connections. Furthermore, it makes it difficult for operators to maintain good coordination and stability when operating the controller and grounding pins. For work scenarios that require rapid and accurate measurements in complex environments, this undoubtedly increases the difficulty of operation and the risk of errors. Utility Model Content

[0004] The purpose of this invention is to provide a grounding resistance measuring device for power operation and maintenance, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A grounding resistance measuring device for power operation and maintenance includes two operating handles rotatably connected by a connecting part. A cable is movably installed inside one of the operating handles and extends out from the lower end of the operating handle. Clamping heads are fixedly installed at the upper ends of the two operating handles respectively. Two connectors are fixedly installed on opposite sides of the two clamping heads. Each connector includes a first mounting base and a second mounting base. Metal conductor blocks are inserted into the first and second mounting bases, and one end of each metal conductor block is electrically connected to a conductor inside the clamping head. Mounting slots are respectively opened on opposite sides of the first and second mounting bases. Mounting blocks and top plates are movably installed in the two mounting slots. Connecting seats are fixedly installed on opposite sides of the two mounting blocks respectively. Elastic bands are fixedly connected to one side of each of the two connecting seats. An arc-shaped clamping piece is fixedly connected between the two elastic bands.

[0007] As a further preferred embodiment of this utility model, a first T-shaped groove is provided on one side of the mounting groove, and a compression spring is inserted and installed in the first T-shaped groove. A second T-shaped groove is also provided at the top of the mounting groove. The mounting groove allows the upper end of the mounting block to move into the second T-shaped groove through the mounting groove, thereby limiting the installation of the mounting block.

[0008] As a further preferred embodiment of this utility model, a sliding groove is provided in the mounting groove near the compression spring.

[0009] As a further preferred embodiment of this utility model, a limiting seat is fixedly installed on the upper end of the top plate, and sliding plates are fixedly installed on both sides of the top plate. The top plate is inserted into two mounting slots, and the sliding plates are inserted into corresponding compression springs. The upper end of the compression spring abuts against the lower end of the sliding plate. The top plate can achieve vertical radial movement between the two mounting slots with the help of the two sliding plates, and can push the mounting block upward with the force of the compression spring.

[0010] As a further preferred embodiment of this utility model, a pressure block is fixedly installed on the side of the mounting block opposite to the connecting seat. The upper half of the mounting block and the connecting seat are inserted into the second T-shaped groove, and the lower half of the mounting groove and the connecting seat are inserted into the mounting groove. The pressure block is inserted into the sliding groove. The pressure block is positioned so that it can move to the top plate before the mounting block is inserted into the mounting groove, thereby facilitating the pressing of the top plate by the cooperation of the mounting block and the pressure block. This allows the mounting block to be inserted into the mounting groove and the top plate to be pushed up by the force of the compression spring, thereby limiting the upper half of the mounting block and the pressure block to be locked in the second T-shaped groove.

[0011] As a further preferred embodiment of this utility model, the arc-shaped clip is made of rubber, and an arc-shaped clip is connected between two elastic bands, which can clamp ground wires of different diameters.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this utility model, two connectors are respectively provided at the connecting ends of the two clamps, and the connectors are composed of a first mounting base, a second mounting base, a mounting block, a top plate, an elastic band, etc., which can clamp cables of different diameters, thereby facilitating manual operation of the controller and grounding nail. At the same time, the mounting block and the top plate locking structure can realize the quick replacement of the elastic band and the arc-shaped clamping plate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connector disassembled structure of this utility model;

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 This is a schematic diagram of the connector structure of this utility model;

[0018] Figure 5 This is a cross-sectional view of the mounting block and top plate of this utility model.

[0019] In the diagram: 1. Operating handle; 2. Connecting part; 3. Cable; 4. Clamping head; 5. Connector; 6. First mounting base; 7. Second mounting base; 8. Metal guide block; 9. Mounting groove; 10. Mounting block; 11. Top plate; 12. Elastic band; 13. Arc-shaped clamping plate; 14. First T-slot; 15. Compression spring; 16. Second T-slot; 17. Slide groove; 18. Limiting seat; 19. Sliding piece; 20. Connecting seat; 21. Pressure block; 22. Limiting groove. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-5 As shown, the present invention provides a grounding resistance measuring device for power operation and maintenance, comprising two operating handles 1, which are rotatably connected by a connecting part 2. A cable 3 is movably installed in one of the operating handles 1 and leads out from the lower end of the operating handle 1. Clamping heads 4 are fixedly installed on the upper ends of the two operating handles 1 respectively. Two connectors 5 are fixedly installed on opposite sides of the two clamping heads 4. The connectors 5 include a first mounting base 6 and a second mounting base 7. A metal guide block 8 is inserted into the first mounting base 6 and the second mounting base 7, and one end of the metal guide block 8 is electrically connected to the conductor iron in the clamping head 4. Mounting grooves 9 are respectively opened on opposite sides of the first mounting base 6 and the second mounting base 7. Mounting blocks 10 and top plates 11 are movably installed in the two mounting grooves 9. Connecting seats 20 are fixedly installed on opposite sides of the two mounting blocks 10 respectively. Elastic bands 12 are fixedly connected to one side of the two connecting seats 20 respectively. An arc-shaped clamping piece 13 is fixedly connected between the two elastic bands 12.

[0022] like Figures 2-5As shown, a first T-shaped groove 14 is provided on one side of the mounting groove 9, and a compression spring 15 is inserted into the first T-shaped groove 14. A second T-shaped groove 16 is also provided at the top of the mounting groove 9. The mounting groove 9 allows the upper end of the mounting block 10 to move into the second T-shaped groove 16, thereby limiting the installation of the mounting block 10. A sliding groove 17 is provided in the mounting groove 9 near the compression spring 15. A limiting seat 18 is fixedly installed on the upper end of the top piece 11. Sliding pieces 19 are fixedly installed on both sides of the top piece 11. The top piece 11 is inserted into the two mounting grooves 9, and the sliding pieces 19 are inserted into the corresponding compression springs 15. The upper end of the compression spring 15 abuts against the lower end of the sliding piece 19. The top piece 11 can achieve vertical positioning between the two mounting grooves 9 with the help of the two sliding pieces 19. Radial movement, combined with the force of the compression spring 15, can push the mounting block 10 upward. A pressure block 21 is fixedly installed on the side of the mounting block 10 opposite to the connecting seat 20. The upper half of the mounting block 10 and the connecting seat 20 are inserted into the second T-shaped groove 16, and the lower half of the mounting groove 9 and the connecting seat 20 are inserted into the mounting groove 9. The pressure block 21 is inserted into the sliding groove 17. The setting of the pressure block 21 can move to the position above the top piece 11 before the mounting block 10 is inserted into the mounting groove 9, so that the top piece 11 can be pressed down by the cooperation of the mounting block 10 and the pressure block 21. This allows the mounting block 10 to be inserted into the mounting groove 9 and the top piece 11 to be pushed up by the force of the compression spring 15, so that the upper half of the mounting block 10 and the pressure block 21 are locked in the second T-shaped groove 16 for limitation.

[0023] like Figures 1-2 As shown, the arc-shaped clip 13 is made of rubber. An arc-shaped clip 13 is connected between two elastic bands 12, which can clamp ground wires of different diameters.

[0024] It should be noted that this utility model is a grounding resistance measuring device in power operation and maintenance. When the elastic band 12 and the arc-shaped clamp 13 are installed between the two connectors 5, one of the mounting blocks 10 can be held and inserted into the two mounting slots 9 in one of the sets of connectors 5 and the first mounting base 6. The pressure block 21 is pre-inserted into the mounting slot 9 and placed above the top piece 11. At this time, the mounting block 10 drives the pressure block 21 to press down, thereby causing the pressure block 21 to press down and move the top piece 11. The top piece 11 drives the sliding pieces 19 on both sides to move down in the corresponding first T-shaped groove 14 and compress the compression spring 15, so that the lower end of the top piece 11 contacts the bottom of the mounting slot 9. At this time, the mounting block 10 can be pushed towards the sliding groove 17 inside the two mounting slots 9, and the limiting groove at the lower end of the mounting block 10 is closed. Insert the 22 into the limiting seat 18, allowing the mounting block 10 to be inserted into the mounting groove 9. Then, slowly release the downward pressure on the mounting block 10, and the sliding piece 19 will be pushed upward by the extension and rebound force of the two compression springs 15. This will allow the top piece 11 to move upward synchronously with the mounting block 10. Thus, the upper part of the mounting block 10 is inserted into the second T-shaped groove 16 by the pushing force of the compression spring 15 and the top piece 11, while the lower part of the mounting block 10 is located in the mounting groove 9, thus completing the installation of the mounting block 10. Then, the other mounting block 10 can be installed in the same way. Then, install the two elastic bands 12 and the arc-shaped clamp 13 in the clamp head 4. When clamping ground wires of different diameters, the elastic bands 12 and the arc-shaped clamp 13 can be used to clamp the ground wire on the outside.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grounding resistance measuring device in power operation, characterized in that: The device includes two operating handles (1), which are rotatably connected by a connecting part (2). A cable (3) is movably installed inside one of the operating handles (1) and extends out from the lower end of the operating handle (1). Clamping heads (4) are fixedly installed on the upper ends of the two operating handles (1). Two connectors (5) are fixedly installed on opposite sides of the two clamping heads (4). Each connector (5) includes a first mounting base (6) and a second mounting base (7). Metal guides are inserted into the first mounting base (6) and the second mounting base (7). Block (8), and one end of the metal guide block (8) is electrically connected to the conductor iron inside the pliers head (4). The first mounting seat (6) and the second mounting seat (7) are respectively provided with mounting grooves (9) on opposite sides. Mounting blocks (10) and top pieces (11) are movably installed in the two mounting grooves (9). Connecting seats (20) are respectively fixedly installed on opposite sides of the two mounting blocks (10). Elastic bands (12) are respectively fixedly connected to one side of the two connecting seats (20). An arc-shaped clip (13) is fixedly connected between the two elastic bands (12). 2.The grounding resistance measuring device in power operation and maintenance according to claim 1, characterized in that: A first T-shaped groove (14) is provided on one side of the mounting groove (9), and a compression spring (15) is inserted and installed in the first T-shaped groove (14). A second T-shaped groove (16) is also provided at the top of the mounting groove (9). 3.The grounding resistance measuring device in power operation and maintenance according to claim 2, characterized in that: A sliding groove (17) is provided in the mounting groove (9) near the compression spring (15).

4. The ground resistance measuring device in power operation and maintenance according to claim 3, characterized in that: The top plate (11) is fixedly installed with a limiting seat (18) at the upper end. Sliding plates (19) are fixedly installed on both sides of the top plate (11). The top plate (11) is inserted into two mounting slots (9), and the sliding plate (19) is inserted into the corresponding compression spring (15). The upper end of the compression spring (15) abuts against the lower end of the sliding plate (19).

5. The ground resistance measuring device in power operation and maintenance according to claim 4, characterized in that: A pressure block (21) is fixedly installed on the side of the mounting block (10) opposite to the connecting seat (20). The upper half of the mounting block (10) and the connecting seat (20) are inserted into the second T-shaped groove (16). The mounting groove (9) and the lower half of the connecting seat (20) are inserted into the mounting groove (9). The pressure block (21) is inserted into the sliding groove (17).

6. The ground resistance measuring device in power operation and maintenance according to claim 1, characterized in that: The arc-shaped clip (13) is made of rubber.

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