Electrical test grounding device

Abstract

The utility model discloses an electrical test grounding device which comprises a grounding pole and a limiting rod which are installed on the lower portion of an installation plate, the upper portion of the installation plate is fixedly provided with a wiring terminal electrically connected with the grounding pole, the limiting rod is internally provided with a half-moon gear, a blocking rod, a rack, a sliding rod and a threaded rod, and the middle of the limiting rod is provided with a horizontal through hole. The sliding rod is installed in a vertical sliding groove in the bottom of the horizontal through hole in a sliding mode, the threaded rod is screwed into a vertical threaded hole in the upper end of the limiting rod, a rotary knob is arranged at the upper end of the threaded rod, the upper end of the rack is rotationally connected with the threaded rod, the lower end of the rack is connected with the sliding rod, the half-moon gear is meshed with the rack, and one end of the stopping rod is connected with the half-moon gear. According to the utility model, the stop rod is arranged in the limiting rod, and the stop rod transversely penetrates into the soil after extending out, so that the stability and reliability of the grounding device are greatly improved, the accuracy of an electrical test result can be ensured, potential safety hazards are eliminated, and the safety of testers and equipment is ensured.

Description

Technical Field

[0001] This utility model relates to an electrical test grounding device used for testing the grounding resistance and grounding potential of electrical equipment or systems, and belongs to the technical field of test devices. Background Technology

[0002] Electrical testing is conducted before an electrical system or equipment is put into use to determine whether there are any quality problems in its installation or manufacturing, and to verify whether newly installed or operating electrical equipment can be put into normal operation. This involves testing and verifying the insulation performance, electrical characteristics, and mechanical properties of each individual electrical device in the electrical system according to the relevant provisions of standards, regulations, and specifications. Through these tests and verifications, defects, errors, and quality problems in the manufacturing and installation of electrical equipment can be identified and eliminated in a timely manner, ensuring that the electrical system and equipment can be put into normal operation. An electrical test grounding device is required when testing the grounding resistance and grounding potential of electrical equipment or systems.

[0003] Utility model patent CN221281081U discloses an electrical test grounding device, including a test plate. A grounding mechanism is provided on the lower surface of the test plate, and a detection mechanism is provided on the left side of the test plate. The grounding mechanism includes three fixing holes on the lower surface of the test plate. This electrical test grounding device, through the interaction of the grounding mechanism, grounding post, anti-slip teeth, conductive plate, and wiring frame, allows the grounding post to be rotated using a tool to cooperate with the threaded post to break through the ground and drive the grounding post into the ground. The anti-slip teeth prevent the grounding post from loosening and maintain grounding stability. The conductive plate then connects the wire to the grounding post for power grounding. After the grounding post is firmly in place, the wires used in the electrical test can be placed sequentially into the wiring frame. Then, rotating the adjusting bolt moves the pressure plate to fix the wires according to the thickness of the wire harness, thus forming a complete grounding structure for convenient grounding testing.

[0004] However, the grounding post of this grounding device is prone to loosening after being inserted into the ground soil. Once the grounding post becomes loose or has a poor connection, it will not only affect the test results of electrical tests, but also pose a great safety hazard, and may even endanger the lives of test personnel and the safety of equipment. Therefore, it is necessary to improve it. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing an electrical test grounding device to ensure the accuracy of electrical test results, eliminate safety hazards, and guarantee the safety of test personnel and equipment.

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

[0007] An electrical test grounding device includes a horizontal mounting plate and a grounding post and a limiting rod vertically mounted on the lower part of the mounting plate. A terminal block electrically connected to the grounding post is fixed to the upper part of the mounting plate. The limiting rod has a limiting mechanism inside, comprising a crescent gear, a blocking rod, a rack, a sliding rod, and a threaded rod. The limiting rod has a horizontal through hole in its middle. The sliding rod is slidably mounted in a vertical groove at the bottom of the horizontal through hole. The threaded rod is screwed into a vertical threaded hole at the upper end of the limiting rod. The upper end of the threaded rod has a knob, and its lower end extends into the horizontal through hole. The upper end of the rack is rotatably connected to the threaded rod, and its lower end is fixedly connected to the sliding rod. The crescent gear meshes with the rack and is rotatably connected to the limiting rod via a rotating shaft. One end of the blocking rod is connected to the crescent gear.

[0008] In the aforementioned electrical test grounding device, six crescent gears and six blocking bars are provided in the horizontal through hole. They are divided into two groups and symmetrically arranged on both sides of the rack. Each group includes three crescent gears and three blocking bars, and the three crescent gears and three blocking bars in each group are arranged in the vertical direction.

[0009] In the aforementioned electrical test grounding device, two limiting rods are provided, and the two limiting rods are symmetrically arranged on both sides of the grounding post.

[0010] The aforementioned electrical test grounding device has an anti-slip structure on the side wall of the knob, which is a rubber sleeve, ribs, or threaded groove.

[0011] In the aforementioned electrical test grounding device, the terminal block is fixed to the top of the grounding post. The top of the terminal block is provided with a horizontal grounding wire socket. A wiring screw is provided on the side wall of the grounding wire socket. The wiring screw is screwed into the threaded hole on the side wall of the grounding wire socket, and the end of the wiring screw abuts against the grounding wire in the grounding wire socket.

[0012] This invention incorporates a blocking bar inside the limiting rod. After extending, the blocking bar extends laterally and penetrates into the soil, preventing the limiting rod and grounding post from being pulled out of the soil. This significantly improves the stability and reliability of the grounding device, ensuring the accuracy of electrical test results, eliminating safety hazards, and guaranteeing the safety of test personnel and equipment. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

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

[0015] Figure 2 This is a schematic diagram of the disassembly structure of the limiting rod of this utility model;

[0016] Figure 3This is a schematic diagram of the internal structure of the limiting rod (first embodiment of the anti-slip structure).

[0017] Figure 4 A schematic diagram showing the disassembled structure of the limit rod and rack;

[0018] Figure 5 A schematic diagram of the second embodiment of the anti-slip structure;

[0019] Figure 6 This is a schematic diagram of the third embodiment of the anti-slip structure.

[0020] The following are the labels in the diagram: 1. Mounting plate; 2. Grounding post; 3. Terminal block; 4. Wiring screw; 5. Limiting rod; 6. Horizontal through hole; 7. Shaft; 8. Half-moon gear; 9. Barrier bar; 10. Rack; 11. Slide groove; 12. Slide rod; 13. Threaded groove; 14. Threaded rod; 15. Knob; 16. Rubber sleeve; 17. Rib. Detailed Implementation

[0021] Please see Figures 1 to 3 This utility model includes a mounting plate 1. A grounding post 2 and a limiting assembly are fixedly connected to the lower part of the mounting plate 1. A terminal block 3 electrically connected to the grounding post 2 is fixed to the upper part of the mounting plate 1. The terminal block 3 is fixed to the top of the grounding post 2. A horizontal grounding wire insertion hole is provided on the top of the terminal block 3. A wiring screw 4 is provided on the side wall of the grounding wire insertion hole. The wiring screw 4 is screwed into the threaded hole on the side wall of the grounding wire insertion hole, and the end of the wiring screw 4 abuts against the grounding wire in the grounding wire insertion hole, thereby connecting the grounding post 2 and the grounding wire together. The limiting assembly includes two limiting rods 5, which are symmetrically arranged on both sides of the grounding post 2 and fixedly connected to the lower parts of both ends of the mounting plate 1.

[0022] Each limiting rod 5 has an internal limiting mechanism, which includes six crescent gears 8, six blocking rods 9, a rack 10, a sliding rod 12, and a threaded rod 14. Each limiting rod 5 has a horizontal through hole 6 in its middle, and a vertical groove 11 at the bottom of the horizontal through hole 6. The sliding rod 12 is slidably installed in the groove 11. The threaded rod 14 is located in the vertical threaded hole at the upper end of the limiting rod 5 and is threadedly engaged with the limiting rod 5. The upper end of the threaded rod 14 has a knob 15, and its lower end extends into the horizontal through hole 6. The upper end of the rack 10 is rotatably connected to the lower end of the threaded rod 14, and its lower end is fixedly connected to the sliding rod 12. The sliding rod 12 can slide up and down along the inner wall of the groove 11 to limit the rack 10. Six crescent gears 8 are arranged vertically on both sides of the rack 10 and mesh with the rack 10. The middle part of each crescent gear 8 is rotatably connected to the limiting rod 5 through the rotating shaft 7. One end of each of the six blocking rods 9 is connected to the six crescent gears 8. When the rack 10 is driven to move upward by rotating the threaded rod 14, the crescent gears 8 can drive the blocking rods 9 to rotate and be housed in the horizontal through hole 6, making it easier for the limiting rod 5 to penetrate into the soil. When the rack 10 is driven to move downward by rotating the threaded rod 14, the crescent gears 8 can drive the blocking rods 9 to rotate outside the horizontal through hole 6, preventing the limiting rod 5 from being pulled out of the soil and improving the stability of the grounding device.

[0023] The side wall of the knob 15 is provided with an anti-slip structure, which can be a rubber sleeve 16 or a rib 17, or a threaded groove 13. The anti-slip structure increases friction and prevents slipping, making it easier for the user to hold the knob 15 and turn it.

[0024] The six crescent gears 8 and six blocking rods 9 in the horizontal through hole 6 are divided into two groups, each group consisting of three crescent gears 8 and three blocking rods 9, symmetrically arranged on both sides of the rack 10.

[0025] In use, first place the grounding device in a suitable position, then insert the two limiting rods 5 and the grounding post 2 into the soil. The two limiting rods 5 can limit and stabilize the entire device. Then, by rotating the knob 15, the threaded rod 14 is rotated, causing the threaded rod 14 to move downward inside the limiting rod 5, which in turn drives the rack 10 to move downward. Through the meshing linkage of the semi-circular gear 8 and the rack 10, the blocking rod 9 extends to the outside of the horizontal through hole 6 of the limiting rod 5. The blocking rod 9 penetrates the soil laterally, preventing the limiting rod 5 and the grounding post 2 from being pulled out of the soil, thus improving the stability of the grounding device.

Claims

1. An electrical test grounding device, characterized in that, The device includes a horizontal mounting plate (1) and a grounding post (2) and a limiting rod (5) installed vertically on the lower part of the mounting plate (1). The upper part of the mounting plate (1) is fixed with a terminal block (3) that is electrically connected to the grounding post (2). The limiting rod (5) is provided with a limiting mechanism inside. The limiting mechanism includes a crescent gear (8), a blocking rod (9), a rack (10), a sliding rod (12), and a threaded rod (14). The limiting rod (5) is provided with a horizontal through hole (6) in the middle. The sliding rod (12) is slidably installed in the horizontal through hole. (6) In the vertical groove (11) at the bottom, the threaded rod (14) is screwed into the vertical threaded hole at the upper end of the limiting rod (5). The upper end of the threaded rod (14) is provided with a knob (15), and the lower end extends into the horizontal through hole (6). The upper end of the rack (10) is rotatably connected to the threaded rod (14), and the lower end is fixedly connected to the slide rod (12). The crescent gear (8) meshes with the rack (10) and is rotatably connected to the limiting rod (5) through the rotating shaft (7). One end of the blocking rod (9) is connected to the crescent gear (8).

2. The electrical test grounding device according to claim 1, characterized in that, The horizontal through hole (6) has six crescent gears (8) and six barrier bars (9), which are divided into two groups and symmetrically arranged on both sides of the rack (10). Each group includes three crescent gears (8) and three barrier bars (9), and the three crescent gears (8) and three barrier bars (9) in each group are arranged in the vertical direction.

3. An electrical test grounding device according to claim 1 or 2, characterized in that, Two limiting rods (5) are provided, and the two limiting rods (5) are symmetrically arranged on both sides of the grounding post (2).

4. An electrical test grounding device according to claim 3, characterized in that, The knob (15) has an anti-slip structure on its side wall, which is a rubber sleeve (16), a rib (17), or a threaded groove (13).

5. An electrical test grounding device according to claim 4, characterized in that, The terminal block (3) is fixed on the top of the grounding post (2). The top of the terminal block (3) is provided with a horizontal grounding hole. The side wall of the grounding hole is provided with a wiring screw (4). The wiring screw (4) is screwed into the threaded hole on the side wall of the grounding hole. The end of the wiring screw (4) presses against the grounding wire in the grounding hole.

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