High-precision grounding resistance meter

Abstract

The utility model relates to the field of resistance measuring instruments, and discloses a high-precision grounding resistance instrument which comprises an installation box body, a first partition plate is fixedly installed in the position, close to the middle, of the interior of the installation box body, and a grounding resistance instrument body is fixedly installed in the position, located on the right side of the first partition plate, of the interior of the installation box body. A user firstly presses the connecting block downwards to relieve the limitation on the rotating shaft, then a worker rotates the limiting round block, so that the limiting round block drives the rotating shaft and the winding wheel to rotate, and the connecting wire can be conveniently unwound or wound; the device is simple in structure and convenient and fast to operate, the connecting wire and the probe can be conveniently carried, meanwhile, the connecting wire is convenient to pay off and take up, and the device is convenient to use, high in practicability and suitable for popularization and application. The working efficiency is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of resistance measuring instruments, and specifically relates to a high-precision ground resistance meter. Background Art

[0002] A high-precision ground resistance meter is an instrument used to measure the grounding resistance of a grounding system. Grounding resistance refers to the resistance between the conductor and the earth in a grounding system. It is usually used to ensure the grounding quality of equipment and systems to protect personnel and equipment from the dangers caused by grounding faults. High-precision ground resistance meters usually have the characteristics and functions of high-precision measurement, versatility, and portability. High-precision ground resistance meters are usually used in grounding resistance detection and maintenance work in various fields such as power systems, communication systems, and railway systems to ensure the reliability and safety of grounding systems.

[0003] For example, a utility model patent with announcement number CN217739319U discloses a digital high-precision grounding resistance meter, including a grounding resistance tester body, a plurality of connecting wires connected to the grounding resistance tester body, two mounting structures installed on the grounding resistance tester body, an anti-dropping spring sleeved on the mounting structure, a limiting structure slidably installed on the two mounting structures, the limiting structure comprising a mounting base plate, a support rod and a limiting baffle, the support rod has a plurality of and is evenly installed at the rear end of the mounting base plate, the digital high-precision grounding resistance meter described in the utility model belongs to the field of resistance measuring instruments, by setting the limiting structure and the anti-dropping spring, it is convenient to limit the connecting wire connected to the grounding resistance tester body, thereby reducing the probability of the connecting wire being disconnected from the grounding resistance tester body after being accidentally touched, and finally making the use of the grounding resistance tester body more stable.

[0004] Generally, a high-precision ground resistance meter needs to use a longer wire to connect with a probe inserted into the soil during use to facilitate the transmission of detection data. However, after the connecting wire is connected to the probe, the device is prone to messy winding and the like, and it is not convenient to carry and store the matching connecting wire. Therefore, a high-precision ground resistance meter is provided. Utility Model Content

[0005] The purpose of this application is to provide a high-precision ground resistance meter in order to solve the above-mentioned problems.

[0006] The technical solution adopted in the present application is as follows: A high-precision ground resistance meter comprises an installation box, a partition plate 1 is fixedly installed near the middle of the interior of the installation box, a ground resistance meter body is fixedly installed on the right side of the interior of the installation box located on the right side of the partition plate 1, a rotating shaft is rotatably connected to the interior of the installation box located on the left side of the partition plate through a bearing, a plurality of winding wheels are fixedly installed on the outer surface of the rotating shaft, and a connecting wire is wound and connected inside the plurality of winding wheels, a plurality of small wire clamps are fixedly installed on one side of the winding wheel, a circular groove is provided on the side of the installation box, one end of the rotating shaft extends to the interior of the circular groove, a limiting circular block is fixedly installed on the outer surface of the rotating shaft extending to the interior of the circular groove, a plurality of limiting teeth are installed on the inner wall surface of the circular groove in a circular array, and a limiting mechanism connected to the limiting teeth is provided on the outer surface of the limiting circular block.

[0007] In a preferred embodiment, the limiting mechanism includes an installation cavity, a limiting block, a return spring, a rectangular hole and a connecting block. The outer surface of the limiting circular block is provided with an installation cavity, and a limiting block is provided for sliding inside the installation cavity. A return spring is provided on the inner bottom surface of the installation cavity, and one end of the return spring is fixed to the bottom surface of the limiting block. The top end of the limiting block is inserted into the inside of the limiting tooth. A rectangular hole is provided on the front side of the limiting circular block, and the rectangular hole is connected with the installation cavity. A connecting block is fixedly installed on the side of the limiting block, and one end of the connecting block extends through the inside of the rectangular hole to the front side of the limiting circular block.

[0008] In a preferred embodiment, a partition plate 2 is fixedly installed on the left side of the partition plate 1 inside the installation box.

[0009] In a preferred embodiment, the top surface of the installation box body is rotatably connected to a sealed box cover via a hinge, and a sponge pad is fixedly installed inside the sealed box cover.

[0010] In a preferred embodiment, a pulling handle is fixedly mounted on the front side of the installation box.

[0011] In a preferred embodiment, a non-slip rubber pad is fixedly installed on the bottom surface of the installation box.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this application are:

[0013] 1. In the present application, due to the adoption of the above-mentioned scheme, the user first presses the connection block downward so that the limit block compresses the reset spring and enters the interior of the installation cavity, thereby releasing the restriction on the rotating shaft. At this time, the personnel can rotate the limit round block so that the limit round block drives the rotating shaft and the winding wheel to rotate, which is convenient for the connection wire to release or reel the wire. When the connection wire is released or reeled, the personnel then loosens the connection block. At this time, the limit block is inserted into the interior of the limit tooth under the action of the return force of the reset spring to limit the rotating shaft and the winding wheel so that it will not rotate at will. The connection wire has two ends, one end of which is connected to the detection probe inserted into the ground, and the other end is connected to the ground resistance meter body. The end connected to the probe is wound around the outside of the winding wheel, while the end connected to the ground resistance meter body is wound around the inside of the winding wheel and a longer section of the wire is reserved and fixed by a small wire clamp, which is convenient for connecting the connection wire to the probe. The device has a simple structure and is easy to operate, which is convenient for carrying the connection wire and the probe. At the same time, it is relatively convenient to release and reel the connection wire, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 It is a partial structural exploded schematic diagram of the present application;

[0016] Figure 3 This is a schematic diagram of the internal structure of the limiting circular block of this application.

[0017] Markings in the figure: 1. Installation box; 2. Partition one; 3. Ground resistance meter body; 4. Rotating shaft; 5. Winding wheel; 6. Connecting wire; 7. Small wire clamp; 8. Circular groove; 9. Limiting round block; 10. Limiting tooth; 11. Limiting mechanism; 12. Installation cavity; 13. Limiting block; 14. Reset spring; 15. Rectangular hole; 16. Connecting block; 17. Partition two; 18. Sealing box cover; 19. Pull handle; 20. Anti-slip rubber pad. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] refer to Figure 1 , Figure 2 and Figure 3A high-precision ground resistance meter includes an installation box 1, the top surface of the installation box 1 is rotatably connected to a sealed box cover 18 through a hinge, a sponge pad is fixedly installed inside the sealed box cover 18, a pulling handle 19 is fixedly installed on the front side of the installation box 1, and an anti-skid rubber pad 20 is fixedly installed on the bottom surface of the installation box 1; the sealed box cover 18 and sponge pad are provided to facilitate protection of the equipment installed inside the installation box 1, the pulling handle 19 is provided to facilitate carrying the installation box 1, and the anti-skid rubber pad 20 is provided to facilitate improving the stability of the installation box 1.

[0020] refer to Figure 1 A partition 2 is fixedly installed near the middle of the installation box 1, a partition 2 17 is fixedly installed on the left side of the partition 2 inside the installation box 1, and a ground resistance meter body 3 is fixedly installed on the right side of the partition 2 inside the installation box 1; the partition 2 is convenient for dividing the interior of the installation box 1 into two installation cavities, which is convenient for installing and fixing the ground resistance meter body 3, and the partition 2 17 is convenient for personnel to store the probe.

[0021] refer to Figure 1 , Figure 2 The interior of the installation box 1 is located on the left side of the partition 2 and is rotatably connected to a rotating shaft 4 through a bearing. A plurality of winding wheels 5 are fixedly installed on the outer surface of the rotating shaft 4, and the interiors of the plurality of winding wheels 5 are all wound with connecting wires 6, and a plurality of small wire clamps 7 are fixedly installed on one side of the winding wheel 5; the rotating shaft 4 is arranged to facilitate the rotation of the winding wheels 5, so as to facilitate the winding and releasing of the connecting wires 6 and the square wire. The connecting wires 6 wound and connected inside the plurality of winding wheels 5 are different, such as signal transmission lines, power lines, etc., and the plurality of small wire clamps 7 are arranged to facilitate the fixing of the end portion of the connecting wire 6. The connecting wire 6 has two ends, one end of which is connected to the detection probe inserted into the ground, and the other end is connected to the ground resistance meter The main body 3 is connected to facilitate the signal transmission detected by the detection probe. The end connected to the probe is wound on the outside of the winding wheel 5, and the end connected to the grounding resistor meter body 3 is wound inside the winding wheel 5 and a longer section of wire is reserved for fixing through a small wire clamp 7. In this way, when the connecting wire 6 inside the winding wheel 5 is unwound and rotated, the end connected to the grounding resistor meter body 3 will rotate together, which is convenient for connecting the connecting wire 6 with the probe. After the connecting wire 6 is completed, the personnel will remove the end of the connecting wire 6 fixed inside the small wire clamp 7 and connected to the grounding resistor meter body 3 for connection, thereby facilitating the connection of the grounding resistor meter body 3, the connecting wire 6 and the probe, and facilitating subsequent detection operations.

[0022] refer to Figure 1A circular groove 8 is provided on the side of the mounting box 1, one end of the rotating shaft 4 extends into the inside of the circular groove 8, and a limiting circular block 9 is fixedly installed on the outer surface of the rotating shaft 4 extending into the inside of the circular groove 8. A plurality of limiting teeth 10 are installed in a circular array on the inner wall surface of the circular groove 8, and a limiting mechanism 11 connected to the limiting teeth 10 is provided on the outer surface of the limiting circular block 9; the limiting circular block 9 is provided to facilitate the rotation of the rotating shaft 4, and the limiting mechanism 11 is provided to facilitate the limiting and fixing of the rotating shaft 4.

[0023] refer to Figure 1 , Figure 3 The limiting mechanism 11 includes an installation cavity 12, a limiting block 13, a reset spring 14, a rectangular hole 15 and a connecting block 16. The outer surface of the limiting circular block 9 is provided with an installation cavity 12, and a limiting block 13 is provided inside the installation cavity 12 for sliding. A reset spring 14 is provided on the inner bottom surface of the installation cavity 12, and one end of the reset spring 14 is fixed to the bottom surface of the limiting block 13, and the top end of the limiting block 13 is inserted into the inside of the limiting tooth 10; by inserting the setting limiting block 13 into the inside of the limiting tooth 10, it is convenient to limit the rotating shaft 4, so that the winding wheel 5 will not rotate at will.

[0024] refer to Figure 1 , Figure 3 A rectangular hole 15 is provided on the front side of the limiting circular block 9, and the rectangular hole 15 is connected to the installation cavity 12. A connecting block 16 is fixedly installed on the side of the limiting block 13, and one end of the connecting block 16 extends through the interior of the rectangular hole 15 to the front side of the limiting circular block 9; when the user needs to rotate the rotating shaft 4 and the winding wheel 5, first press the connecting block 16 downward, and the connecting block 16 drives the limiting block 13 to enter the interior of the installation cavity 12, thereby releasing the limit on the rotating shaft 4. At this time, the user can rotate the limiting circular block 9 so that the limiting circular block 9 drives the rotating shaft 4 and the winding wheel 5 to rotate, which is convenient for the connecting wire 6 to release or release the wire. When the connecting wire 6 is released or the release is completed, the user releases the connecting block 16. At this time, the limiting block 13 is inserted into the interior of the limiting tooth 10 under the action of the rebound force of the reset spring 14 to limit the rotating shaft 4 and the winding wheel 5, so that it will not rotate at will.

[0025] The implementation principle of an embodiment of a high-precision ground resistance meter of the present application is as follows: the user first places the installation box 1 in a suitable position and takes out the probe and inserts it into the ground. When the personnel need to pay out the connecting wire 6 inside the winding wheel 5, first press the connecting block 16 downward so that the limit block 13 compresses the reset spring 14 and enters the interior of the installation cavity 12, thereby releasing the restriction on the rotating shaft 4. At this time, the personnel can rotate the limit round block 9 so that the limit round block 9 drives the rotating shaft 4 and the winding wheel 5 to rotate, which is convenient for paying out or taking up the connecting wire 6. When the connecting wire 6 is paid out or taken up, the personnel then releases the connecting block 16. At this time, the limit block 13 is inserted into the interior of the limit tooth 10 under the action of the rebound force of the reset spring 14 to limit the rotating shaft 4 and the winding wheel 5 so that they will not rotate at will. The connecting wire 6 has two ends, one end of which is connected to the detection probe inserted into the ground, and the other end is connected to the ground resistor meter body 3. The end connected to the probe is wound on the outside of the winding wheel 5, and the end connected to the ground resistor meter body 3 is wound inside the winding wheel 5 and a longer section of wire is reserved and fixed by a small wire clamp 7, which is convenient for connecting the connecting wire 6 to the probe. When the connecting wire 6 is completed, the personnel will remove the end of the connecting wire 6 fixed in the small wire clamp 7 and connected to the ground resistor meter body 3 for connection, thereby facilitating the connection of the ground resistor meter body 3, the connecting wire 6 and the probe, and facilitating subsequent detection operations. The device has a simple structure and is easy to operate, and is convenient to carry the connecting wire 6 and the probe. At the same time, it is relatively convenient to release and reel in the connecting wire 6, thereby improving work efficiency.

[0026] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A high-precision ground resistance meter, comprising a mounting box (1), characterized in that: A partition plate (2) is fixedly installed near the middle of the installation box (1), a ground resistance meter body (3) is fixedly installed inside the installation box (1) on the right side of the partition plate (2), a rotating shaft (4) is rotatably connected to the inside of the installation box (1) on the left side of the partition plate (2) through a bearing, a plurality of winding wheels (5) are fixedly installed on the outer surface of the rotating shaft (4), and a connecting wire (6) is wound around the inside of each of the plurality of winding wheels (5), and the winding wheels (5) are A plurality of small wire clamps (7) are fixedly installed on one side, a circular groove (8) is opened on the side of the installation box (1), one end of the rotating shaft (4) extends into the inside of the circular groove (8), a limiting circular block (9) is fixedly installed on the outer surface of the rotating shaft (4) extending into the inside of the circular groove (8), a plurality of limiting teeth (10) are installed in a circular array on the inner wall surface of the circular groove (8), and a limiting mechanism (11) connected to the limiting teeth (10) is arranged on the outer surface of the limiting circular block (9).

2. A high-precision ground resistance meter as claimed in claim 1, characterized in that: The limiting mechanism (11) comprises an installation cavity (12), a limiting block (13), a return spring (14), a rectangular hole (15) and a connecting block (16); the outer surface of the limiting circular block (9) is provided with an installation cavity (12); the limiting block (13) is slidably arranged inside the installation cavity (12); the return spring (14) is arranged on the inner bottom surface of the installation cavity (12); one end of the return spring (14) is fixed to the bottom surface of the limiting block (13); the top end of the limiting block (13) is inserted into the inside of the limiting tooth (10); the front side of the limiting circular block (9) is provided with a rectangular hole (15); the rectangular hole (15) is communicated with the installation cavity (12); the side of the limiting block (13) is fixedly provided with a connecting block (16); one end of the connecting block (16) passes through the inside of the rectangular hole (15) and extends to the front side of the limiting circular block (9).

3. A high-precision ground resistance meter as claimed in claim 1, characterized in that: A partition plate 2 (17) is fixedly installed inside the installation box (1) on the left side of the partition plate 1 (2).

4. A high-precision ground resistance meter as claimed in claim 1, characterized in that: The top surface of the installation box body (1) is rotatably connected to a sealed box cover (18) via a hinge, and a sponge pad is fixedly installed inside the sealed box cover (18).

5. A high-precision ground resistance meter as claimed in claim 1, characterized in that: A pulling handle (19) is fixedly mounted on the front side of the installation box (1).

6. A high-precision ground resistance meter as claimed in claim 1, characterized in that: An anti-slip rubber pad (20) is fixedly mounted on the bottom surface of the installation box (1).

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