A reference point ground testing device

Abstract

The utility model relates to grounding test technical field discloses a kind of reference point grounding test devices, including protective box, the protective box rear end is rotatably connected with flap, tester is installed in the protective box, the protective box both sides are provided with anti-falling assembly, the protective box bottom is provided with heat dissipation component;The anti-falling assembly includes two support blocks, two The support block is fixedly connected in the protective box left and right sides, the support block inside slidingly connected with multiple moving blocks, multiple The moving block is fixedly connected with air bag in one side apart, the moving block other end is fixedly connected with two damping rods. When the device accidentally falls, the moving block in support block is compressed spring one and damping rod after impact, simultaneously through connecting rod driving sliding block on sliding rod sliding and stretching spring two, impact force can be effectively absorbed, prevent equipment from falling and damage in field operation.

Description

Technical Field

[0001] This utility model relates to the field of grounding testing technology, specifically a reference point grounding testing device. Background Technology

[0002] The reference point grounding test device is a specialized device in the field of grounding testing technology used to test the performance of grounding systems. It is mainly used to measure the grounding resistance value between the grounding body and the earth, evaluate the continuity and reliability of the grounding loop, and determine whether the grounding system meets safety standards by accurately collecting grounding-related electrical parameters. This helps to avoid safety hazards such as equipment leakage, lightning damage, and signal interference caused by poor grounding, and provides basic protection for the safety of electrical equipment and personnel.

[0003] The existing reference point grounding test device consists of a test host, grounding test probes, connecting wires, and a simple protective housing. During use, the operator must first determine the test reference position near the grounding electrode to be tested, insert the current probe and voltage probe into the soil at the specified distance, and then connect the test host to the grounding electrode, current probe, and voltage probe respectively via the connecting wires. After starting the test host, the equipment injects test current into the grounding loop through its internal circuitry, simultaneously acquiring voltage signals and automatically calculating key parameters such as the grounding resistance value based on relevant formulas. After the test is completed, the host is shut down, the connecting wires are removed, and the probes are retrieved, completing one grounding test operation.

[0004] Existing reference point grounding test devices can perform grounding tests well, but there are still some shortcomings in their use. The existing technology has weak drop protection capabilities, relying only on a simple outer shell for protection and lacking a dedicated cushioning structure. Accidental drops during field operations can easily damage the internal test host, affecting the continuity of the test work. In addition, existing technologies mostly rely on fan cooling, and the air intake cannot be adjusted. Heat can easily accumulate, causing the host to overheat and shut down, reducing test efficiency.

[0005] To address the shortcomings of existing technologies, this invention proposes a reference point grounding test device. Summary of the Invention

[0006] The purpose of this invention is to provide a reference point grounding test device to solve the following technical problems: 1. Solve the problem that existing technologies are prone to damage to the internal test host due to accidental drops during field operations; 2. This solves the problem that existing technologies rely heavily on fan cooling, which cannot adjust the airflow and easily leads to heat buildup, causing the host to overheat and shut down.

[0007] The purpose of this utility model can be achieved through the following technical solution: a reference point grounding test device, including a protective box, a flip cover rotatably connected to the rear end of the protective box, a tester installed inside the protective box, anti-drop components provided on both sides of the protective box, and a heat dissipation component provided at the bottom of the protective box; The anti-fall component includes two support blocks, which are fixedly connected to the left and right sides of the protective box respectively. Multiple movable blocks are slidably connected inside the support blocks. Each of the multiple movable blocks is fixedly connected to an airbag on one side away from the other. Two damping rods are fixedly connected to the other end of each movable block. The other ends of the two damping rods are fixedly connected inside the support blocks. A spring is sleeved on the outer periphery of each of the two damping rods.

[0008] As a preferred embodiment of this utility model: the heat dissipation assembly includes two cooling fans and two support frames. The two cooling fans are installed inside the protective box, and the two support frames are fixedly connected to the bottom of the protective box. A support rod is fixedly connected inside each of the two support frames. Multiple air intake blades are rotatably connected to the outer periphery of the support rods. A rotating rod is fixedly connected to the other end of each of the multiple air intake blades. A driving rod is fixedly connected to the other end of one of the rotating rods, and a driven rod is fixedly connected to the other end of the remaining rotating rods. A connecting rod is rotatably connected to the outer periphery of both the driving rod and the driven rod. A drive assembly is provided at the bottom of the protective box.

[0009] As a preferred embodiment of this utility model: the drive assembly includes two mounting brackets, both of which are fixedly connected to the bottom of the protective box, and both of which have telescopic cylinders fixedly connected inside, with the other end of the telescopic cylinder rotatably connected to the outer periphery of the drive rod.

[0010] As a preferred embodiment of this utility model: two fixing blocks are fixedly connected to the end of the moving block away from the airbag. A connecting rod is rotatably connected inside each of the two fixing blocks. A sliding block is rotatably connected to the other end of each of the two connecting rods. Two fixing blocks are fixedly connected inside the support block. A sliding rod is fixedly connected to one side of each of the two fixing blocks. Two sliding blocks are slidably connected inside the sliding rod. A spring is sleeved on the outer periphery of the sliding rod.

[0011] As a preferred embodiment of this utility model: each of the plurality of movable blocks is fixedly connected to a limiting block on its outer periphery, and the plurality of limiting blocks are slidably connected inside the support block.

[0012] As a preferred embodiment of this utility model: one end of each of the two springs is fixedly connected to the end of the moving block away from the airbag, and the other end of each of the two springs is fixedly connected to the inside of the support block.

[0013] As a preferred embodiment of this utility model: the two ends of the spring are respectively fixedly connected to the two sliding blocks on opposite sides.

[0014] As a preferred embodiment of this utility model, all of the aforementioned rotating rods are rotatably connected inside the support frame.

[0015] The beneficial effects of this utility model are: (1) This utility model uses an anti-fall component. When the device falls accidentally, the moving block inside the support block is impacted and compresses the first spring and the damping rod. At the same time, the connecting rod drives the sliding block to slide on the sliding rod and stretches the second spring, forming a composite buffer system of double springs and damping rods. The outer airbag expands under pressure to form a flexible protective layer, which, together with the limiting block, restricts the stroke of the moving block. This can effectively absorb the impact force and prevent the equipment from falling and being damaged during field operations.

[0016] (2) In this utility model, when the temperature of the tester is detected to be too high, the telescopic cylinder pushes the active rod to rotate, and the connecting rod links multiple sets of rotating rods to make the air intake blades expand synchronously to the optimal air intake angle, thereby increasing the air intake volume. At the same time, the cooling fan is started to stabilize the temperature of the core components of the tester and prevent the tester from overheating and shutting down after working for a long time. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a schematic diagram of the support block in this utility model; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the protective box in this utility model; Figure 5 This is a schematic diagram of the cooling fan in this utility model; Figure 6 This is a schematic diagram of the support frame in this utility model.

[0019] Attached diagram descriptions: 1. Protective box; 2. Flip cover; 3. Tester; 4. Support block; 5. Moving block; 6. Airbag; 7. Limiting block; 8. Damping rod; 9. Spring 1; 10. Fixing block 1; 11. Connecting rod; 12. Sliding block; 13. Fixing block 2; 14. Sliding rod; 15. Spring 2; 16. Cooling fan; 17. Support frame; 18. Support rod; 19. Inlet blade; 20. Rotating rod; 21. Driving rod; 22. Driven rod; 23. Connecting rod; 24. Mounting bracket; 25. Telescopic cylinder. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-6 As shown, this utility model is a reference point grounding test device, including a protective box 1, a flip cover 2 rotatably connected to the rear end of the protective box 1, a tester 3 installed inside the protective box 1, anti-drop components on both sides of the protective box 1, and a heat dissipation component at the bottom of the protective box 1. Specifically, the protective box 1 is used to house the tester 3, and the flip cover 2 can rotate around the rear end of the protective box 1. When opened, it is convenient to operate or maintain the tester 3, and when closed, it assists in protecting the tester 3. The tester 3 is used to carry out reference point grounding tests.

[0022] Please see Figures 1-3 As shown, the anti-fall component includes two support blocks 4, which are fixedly connected to the left and right sides of the protective box 1, respectively. Multiple movable blocks 5 are slidably connected inside the support blocks 4. Airbags 6 are fixedly connected to one side of each movable block 5. Two damping rods 8 are fixedly connected to the other end of each movable block 5. The other ends of the two damping rods 8 are fixedly connected inside the support block 4. Springs 9 are sleeved on the outer periphery of each damping rod 8. Two fixed blocks 10 are fixedly connected to the end of each movable block 5 away from the airbag 6. Connecting rods 11 are rotatably connected inside each fixed block 10. The other ends of the two connecting rods 11 are rotatably connected to... A sliding block 12 is attached. Two fixed blocks 13 are fixedly connected inside the support block 4. A sliding rod 14 is fixedly connected to one side of the two fixed blocks 13 facing each other. The two sliding blocks 12 are slidably connected inside the sliding rod 14. A spring 15 is sleeved on the outer periphery of the sliding rod 14. Limiting blocks 7 are fixedly connected to the outer periphery of multiple moving blocks 5. The multiple limiting blocks 7 are slidably connected inside the support block 4. One end of each of the two springs 9 is fixedly connected to the end of the moving block 5 away from the airbag 6. The other end of each of the two springs 9 is fixedly connected inside the support block 4. The two ends of the spring 15 are respectively fixedly connected to the two sliding blocks 12 facing each other.

[0023] Specifically, support blocks 4 are fixed on the left and right sides of protective box 1, providing installation and sliding space for movable blocks 5, fixed blocks 13, etc. Movable blocks 5 slide inside support blocks 4, connecting airbags 6, damping rods 8 and fixed blocks 10. Airbags 6 are fixed on the side away from movable blocks 5, forming a flexible protective structure. The two ends of damping rods 8 are connected to the inside of movable blocks 5 and support blocks 4 respectively, assisting in buffering impact force. Spring 9 is sleeved on the outer periphery of damping rods 8, with both ends connected to the inside of movable blocks 5 and support blocks 4 respectively, providing elastic buffering force. Fixed blocks 10 are fixed at the end of movable blocks 5 away from airbags 6, providing support for connecting rods 11. The connecting rod 11 is rotatably connected to the fixed block 10 and the sliding block 12 at both ends, respectively, to transmit the force of the moving block 5. The sliding block 12 slides inside the sliding rod 14 and moves in coordination with the connecting rod 11. The fixed block 13 is fixed inside the support block 4 to support the sliding rod 14. The sliding rod 14 is connected between the two fixed blocks 13 to provide a sliding track for the sliding block 12. The spring 15 is sleeved on the outer circumference of the sliding rod 14 and connected to the two sliding blocks 12 at both ends to provide elastic buffering force. The limiting block 7 is fixed on the outer circumference of the moving block 5 and slides inside the support block 4 to limit the sliding stroke of the moving block 5.

[0024] Please see Figures 4-6 As shown, the heat dissipation assembly includes two cooling fans 16 and two support frames 17. Both cooling fans 16 are installed inside the protective box 1. Both support frames 17 are fixedly connected to the bottom of the protective box 1. Both support frames 17 have support rods 18 fixedly connected inside. Multiple air intake blades 19 are rotatably connected to the outer periphery of the support rods 18. The other end of each air intake blade 19 is fixedly connected to a rotating rod 20. One of the rotating rods 20 has a driving rod 21 fixedly connected to its other end. The other ends of the remaining rotating rods 20 are fixedly connected to driven rods 22. The driving rod 21 and the driven rod 22 are rotatably connected to a connecting rod 23. A drive assembly is provided at the bottom of the protective box 1. The drive assembly includes two mounting brackets 24. Both mounting brackets 24 are fixedly connected to the bottom of the protective box 1. Both mounting brackets 24 have telescopic cylinders 25 fixedly connected inside. The other end of the telescopic cylinders 25 is rotatably connected to the outer periphery of the driving rod 21. Multiple rotating rods 20 are rotatably connected inside the support frames 17.

[0025] Specifically, the cooling fan 16 is installed inside the protective box 1 to assist in the cooling of the tester 3. The support frame 17 is fixedly connected to the bottom of the protective box 1, providing installation and support for the support rod 18 and the rotating rod 20. The support rod 18 is fixed inside the support frame 17 and is rotatably connected to the air intake blade 19. One end of the air intake blade 19 is rotatably connected to the outer periphery of the support rod 18, and the other end is fixedly connected to the rotating rod 20, which can adjust the air intake angle. One end of the rotating rod 20 is fixedly connected to the air intake blade 19, and the other end is fixedly connected to the driving rod 21 or the driven rod 22, and is rotatably connected inside the support frame 17 to transmit the rotational force. The driving rod 21 is fixedly connected to one of the rotating rods 20 and rotatably connected to the telescopic cylinder 25. Driven by the driving rod 21, the corresponding rotating rod 20 is driven. The driven rod 22 is fixedly connected to the other rotating rods 20 and rotatably connected to the connecting rod 23. It works in conjunction with the driving rod 21 to achieve linkage. The connecting rod 23 is rotatably connected to the outer periphery of the driving rod 21 and the driven rod 22 to achieve synchronous rotation of the two. The mounting bracket 24 is fixedly connected to the bottom of the protective box 1 to provide a mounting base for the telescopic cylinder 25. The telescopic cylinder 25 is fixed inside the mounting bracket 24 and rotatably connected to the driving rod 21 at the other end, providing rotational driving force for the driving rod 21.

[0026] The working principle of this utility model is as follows: When the device accidentally falls during field operations, the outer airbag 6 first contacts the ground and bears the impact pressure. The compressed airbag 6 will push the movable block 5, which is fixedly connected to it, to slide horizontally inside the support block 4. When the movable block 5 slides, it will simultaneously compress the two damping rods 8 connected to the end away from the airbag 6, and at the same time squeeze the spring 9 sleeved on the outer periphery of the damping rod 8. The damping rod 8 initially buffers the impact through its own damping characteristics, while the spring 9 absorbs part of the impact energy through deformation. At the same time, the two fixed blocks 10 fixed on the movable block 5 will move synchronously with the movable block 5, driving the connecting rod 11 to rotate around the rotation fulcrum of the fixed block 10. The rotating connecting rod 11 further pushes the sliding block 12 to slide towards each other on the slide rod 14, so that the spring 15 sleeved on the outer periphery of the slide rod 14 is stretched. The spring 15 absorbs the impact through the reverse elastic force, forming a composite buffer system of damping rod 8, spring 9 and spring 15, which ultimately effectively offsets the impact force generated by the fall and protects the tester 3 inside the protective box 1 from damage.

[0027] When the tester 3 inside the protection box 1 is detected to have overheated due to prolonged operation, the telescopic cylinder 25 of the drive assembly at the bottom of the protection box 1 will activate. The telescopic cylinder 25 is fixed inside the mounting bracket 24, and its piston rod extends and pushes the rotatably connected drive rod 21 to rotate around the support frame 17. When the drive rod 21 rotates, it drives the driven rod 22 to rotate synchronously via the connecting rod 23 rotatably connected to its outer circumference. Since the drive rod 21 and driven rod 22 are respectively fixedly connected to different rotating rods 20, and all rotating rods 20 are rotatably connected inside the support frame 17, the rotation of the drive rod 21 and driven rod 22 will drive all rotating rods 20 to rotate synchronously. When rod 20 rotates, it causes the air intake blade 19 fixed at one end to rotate around the support rod 18. The support rod 18 is fixed inside the support frame 17, allowing the air intake blade 19 to unfold to the optimal air intake angle, significantly increasing the airflow of external air into the protection box 1. At the same time, the two cooling fans 16 inside the protection box 1 start, accelerating the airflow speed inside the protection box 1. The heat generated by the tester 3 during operation is quickly carried out of the protection box 1 through the ventilation channel formed by the air intake blade 19, thereby stabilizing the temperature of the core components of the tester 3 within the safe operating range, preventing the tester 3 from automatically shutting down due to overheating, and ensuring the continuous and smooth progress of the grounding test.

[0028] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A reference point grounding test device, comprising a protection box (1), characterized in that, The protective box (1) is rotatably connected to a flip cover (2) at the rear end. A tester (3) is installed inside the protective box (1). Anti-drop components are provided on both sides of the protective box (1). A heat dissipation component is provided at the bottom of the protective box (1). The anti-fall component includes two support blocks (4), which are fixedly connected to the left and right sides of the protective box (1) respectively. Multiple moving blocks (5) are slidably connected inside the support blocks (4). Airbags (6) are fixedly connected to one side of each of the multiple moving blocks (5). Two damping rods (8) are fixedly connected to the other end of each moving block (5). The other ends of the two damping rods (8) are fixedly connected inside the support blocks (4). Springs (9) are sleeved on the outer periphery of each of the two damping rods (8).

2. The reference point grounding test device according to claim 1, characterized in that, The heat dissipation assembly includes two cooling fans (16) and two support frames (17). The two cooling fans (16) are installed inside the protective box (1). The two support frames (17) are fixedly connected to the bottom of the protective box (1). The support frames (17) are fixedly connected to the support rods (18). Multiple air intake blades (19) are rotatably connected to the outer periphery of the support rods (18). Rotating rods (20) are fixedly connected to the other end of the multiple air intake blades (19). One of the rotating rods (20) is fixedly connected to the other end of the active rod (21). The other end of the remaining rotating rods (20) is fixedly connected to the driven rods (22). The active rod (21) and the driven rods (22) are rotatably connected to the outer periphery of the active rod (21) and the driven rods (22). A drive assembly is provided at the bottom of the protective box (1).

3. The reference point grounding test device according to claim 2, characterized in that, The drive assembly includes two mounting brackets (24), both of which are fixedly connected to the bottom of the protective box (1). A telescopic cylinder (25) is fixedly connected inside each of the two mounting brackets (24), and the other end of the telescopic cylinder (25) is rotatably connected to the outer periphery of the drive rod (21).

4. The reference point grounding test device according to claim 1, characterized in that, The movable block (5) is fixedly connected to two fixed blocks (10) at one end away from the airbag (6). Each of the two fixed blocks (10) is rotatably connected to a connecting rod (11). Each of the two connecting rods (11) is rotatably connected to a sliding block (12) at the other end. The support block (4) is fixedly connected to two fixed blocks (13). Each of the two fixed blocks (13) is fixedly connected to a sliding rod (14) on one side facing each other. Each of the two sliding blocks (12) is slidably connected inside the sliding rod (14). A spring (15) is sleeved on the outer periphery of the sliding rod (14).

5. The reference point grounding test device according to claim 1, characterized in that, Each of the multiple movable blocks (5) is fixedly connected to a limiting block (7) on its outer periphery, and each of the multiple limiting blocks (7) is slidably connected inside the support block (4).

6. The reference point grounding test device according to claim 1, characterized in that, One end of each of the two springs (9) is fixedly connected to the end of the moving block (5) away from the airbag (6), and the other end of each of the two springs (9) is fixedly connected to the inside of the support block (4).

7. A reference point grounding test device according to claim 4, characterized in that, The two ends of the second spring (15) are respectively fixedly connected to the two sliding blocks (12) on opposite sides.

8. The reference point grounding test device according to claim 2, characterized in that, The plurality of the rotating rods (20) are rotatably connected inside the support frame (17).

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