Grounding device

Abstract

The present application relates to the technical field of grounding equipment, and provides a grounding device, which includes a metal rod and an extended grounding device, one end of the metal rod is electrically connected to the equipment to be grounded, and the other end of the metal rod is electrically connected to the ground wire. The test portion of the metal rod is concave along part of the outer wall of the metal rod to form a groove, the test portion is used to electrically connect to the electrical measuring end of the test equipment carried by the operation and maintenance personnel, and the wiring portion of the metal rod is used to electrically connect to the grounding protection equipment of the operation and maintenance personnel. The extended grounding device is constructed to be extendably electrically connected to the grounding end of the test equipment. The test portion of the present invention is far away from the equipment to be grounded, which facilitates the operation process of connecting the test equipment and the metal rod to each other, and is not easy to fall off after connection. The wiring portion can be used to electrically connect to the grounding protection equipment of the operation and maintenance personnel to protect the operation and maintenance personnel from electric shock. The extended grounding device allows the test equipment to move freely within a certain range, and the test equipment can be used more flexibly.

Description

Technical Field

[0001] The present application relates to the technical field of grounding equipment, and in particular to a grounding device. Background Art

[0002] In power plants or substations, the outer shells of some electrical equipment in power plants or substations need to be grounded to prevent the electrical equipment from damaging other equipment and endangering personal safety in extreme conditions such as insulation breakdown. Grounding can release the fault current directly to the earth. Some electrical equipment itself needs to be grounded to ensure that the electrical equipment can work normally, such as the neutral point of the transformer, the end of the capacitor unit of the capacitive voltage transformer, the base of the lightning arrester, etc. The grounding device of this type of electrical equipment is usually connected to the underground grounding grid below the electrical equipment through a grounding down conductor from the electrical equipment along the supporting structure.

[0003] At present, metal rods are mostly used to ground electrical equipment in power plants or substations. One end of the metal rod is electrically connected to the electrical equipment, and the entire metal rod is closely attached to the electrical equipment and connected to the underground grounding grid. Since the metal rod is closely attached to the electrical equipment, that is, the distance between the metal rod and the electrical equipment is very close, when the operation and maintenance personnel need to use the test equipment to detect whether the grounding performance of the metal rod is normal, the power connection clamp of the test equipment is difficult to stably clamp on the metal rod very close to the wall of the electrical equipment. The power connection clamp can only clamp a very small part of the metal rod, which will cause the power connection clamp to fall off easily. In addition, during the test process, how to ensure the safety of the operation and maintenance personnel's use of electricity and the test equipment from being damaged by electric shock is also a problem that needs to be solved. In summary, in this field, how to develop a device that can provide grounding for electrical equipment while facilitating the testing work of the operation and maintenance personnel and ensuring the safety of the operation and maintenance personnel and test equipment is a technical problem that needs to be solved in this field. Summary of the invention

[0004] In view of this, the present application provides a grounding device that can provide grounding for electrical equipment while also facilitating the testing work of operation and maintenance personnel and ensuring the electrical safety of operation and maintenance personnel and testing equipment.

[0005] In a first aspect, the present application provides a grounding device, which includes: a metal rod, one end of which is electrically connected to a device to be grounded, and the other end of the metal rod is electrically connected to a ground wire; the metal rod has a test portion and a wiring portion, the test portion is recessed along a portion of the outer wall of the metal rod to form a groove, the test portion is used to be electrically connected to an electrical measuring end of the test device, and the wiring portion is used to be electrically connected to a grounding protection device; and an extended grounding device, which is electrically connected to the metal rod, and the extended grounding device is constructed to be extendably electrically connected to the grounding end of the test device.

[0006] When the present invention is used, the top of the metal rod is electrically connected to the housing of the device to be grounded and / or the grounding end of the device to be grounded, and the other end of the metal rod extends downward along the supporting structure supporting the device to be grounded until it is electrically connected to the underground grounding grid. When it is necessary to test whether the grounding of a device to be grounded is normal, the test device can be electrically connected to the test part, and the test part protruding toward the side of the metal rod will not cause the test part to be too close to the wall of the supporting structure, so as to facilitate the operation and maintenance personnel to perform the test operation. When the operation and maintenance personnel conduct inspections and repairs in the place where the device to be grounded is located, the operation and maintenance personnel can electrically connect the grounding protection equipment they carry with the wiring part, and the grounding protection equipment can protect the operation and maintenance personnel from electric shock. In addition, when the operation and maintenance personnel conduct inspections and repairs in the place where the device to be grounded is located, if they need to use the test equipment they carry to test a device to be grounded, they first electrically connect the grounding end of the test equipment to the extended grounding device, and then electrically connect the electrical measuring end of the test equipment to the test part. The extendable extended grounding device can be easily electrically connected to the test equipment, and there will be no excessive restrictions on the distance between the test equipment and the metal rod. After grounding, the test equipment can move freely within the allowable range. The test part of the present invention is far away from the equipment to be grounded, which facilitates the operation process of connecting the test equipment and the metal rod to each other, and is not easy to fall off after connection. The wiring part can be used to electrically connect with the grounding protection equipment of the operation and maintenance personnel to protect the operation and maintenance personnel from electric shock. After the extendable extension grounding device is electrically connected to the test equipment, the test equipment can move freely within a certain range, which is convenient for more flexible use of the test equipment.

[0007] In combination with the first aspect, in a possible implementation manner, a portion of the surface of the metal rod is coated with an insulating layer, and at least a portion of the surface of the test portion is not coated with the insulating layer.

[0008] In combination with the first aspect, in a possible implementation manner, the testing portion is a bent rod body, and the testing portion is bent along a portion of an outer wall of the metal rod to form a groove.

[0009] In combination with the first aspect, in a possible implementation manner, the wiring portion has a protrusion, and the protrusion protrudes outward along a portion of the outer wall of the metal rod.

[0010] In combination with the first aspect, in a possible implementation manner, the protrusion includes: a wiring assembly electrically connected to the metal rod, and the wiring assembly is used to electrically connect to a ground terminal of the test equipment.

[0011] In combination with the first aspect, in a possible implementation manner, the wiring assembly includes: a wiring board, and the wiring board is provided with a connecting through hole.

[0012] In combination with the first aspect, in a possible implementation, the extension grounding device includes: an extension component, one end of the extension component is used to be electrically connected to the test equipment, and the other end of the extension component is electrically connected to the metal rod; and a winding component, rotatably connected to the metal rod, the extension component is at least partially wound around the winding component, and the winding component is constructed to wind up the extension component.

[0013] In combination with the first aspect, in a possible implementation, the extension component is a cable having a metal wire inside; wherein the winding component includes: a reel rotatably connected to the metal rod, and the cable is wound on the reel.

[0014] In combination with the first aspect, in a possible implementation manner, the winding assembly further includes: a handle disposed on the reel.

[0015] In combination with the first aspect, in a possible implementation, the winding assembly further includes: a motor, the motor includes a drive shaft, and the drive shaft and the rotating shaft of the reel are connected to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic structural diagram of a grounding device provided in one embodiment of the present application.

[0017] Figure 2 Shown is a schematic structural diagram of a metal rod in a grounding device provided in one embodiment of the present application.

[0018] Figure 3 Shown is a structural schematic diagram of another embodiment of a metal rod in a grounding device of the present application.

[0019] Figure 4 Shown is a top view of a metal rod in a grounding device provided by an embodiment of the present application.

[0020] Figure 5 Shown is a partial structural schematic diagram of a grounding device provided in one embodiment of the present application.

[0021] Figure 6 Shown Figure 5 A schematic structural diagram of a specific embodiment of the present invention.

[0022] Figure 7 Shown is a structural schematic diagram of an extended grounding device in a grounding device provided in an embodiment of the present application.

[0023] Figure 8 Shown is a schematic structural diagram of an extended grounding device in a grounding device provided in another embodiment of the present application. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0026] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In power plants or substations, the outer shells of some electrical equipment in power plants or substations need to be grounded to prevent the electrical equipment from damaging other equipment and endangering personal safety under extreme conditions such as insulation breakdown. Grounding can release the fault current directly to the earth. Some electrical equipment itself needs to be grounded to ensure that the electrical equipment can work normally, such as the neutral point of the transformer, the end of the capacitor unit of the capacitive voltage transformer, the base of the lightning arrester, etc. The grounding structure of this type of electrical equipment is usually connected to the underground grounding grid below the electrical equipment through a grounding down conductor from the electrical equipment along the supporting structure.

[0030] At present, metal rods are mostly used to ground electrical equipment in power plants or substations. One end of the metal rod is electrically connected to the electrical equipment, and the entire metal rod is closely attached to the electrical equipment and connected to the underground grounding grid. Since the metal rod is closely attached to the electrical equipment, that is, the distance between the metal rod and the electrical equipment is very close, when the operation and maintenance personnel need to use the test equipment to detect whether the grounding performance of the metal rod is normal, the power connection clamp of the test equipment is difficult to stably clamp on the metal rod very close to the electrical equipment. The power connection clamp can often only clamp a very small part of the metal rod, which will cause the power connection clamp to fall off easily. In addition, during the test process, how to ensure the safety of the operation and maintenance personnel's use of electricity and the test equipment from being damaged by electric shock is also a problem that needs to be solved. In summary, in this field, how to develop a device that can provide grounding for electrical equipment while facilitating the testing work of the operation and maintenance personnel and ensuring the safety of the operation and maintenance personnel and test equipment in the use of electricity is a technical problem that needs to be solved in this field.

[0031] like Figures 1 to 8 As shown, in order to solve the problems existing in the prior art, the present invention provides a grounding device; wherein, the grounding device comprises: a metal rod 2, one end of which is electrically connected to the equipment to be grounded 1, and the other end of the metal rod 2 is electrically connected to the ground wire 3; the metal rod 2 has a testing part 21 and a wiring part 22, the testing part 21 is concave along part of the outer wall of the metal rod 2 to form a groove, the testing part 21 is used to be electrically connected to the measuring end of the testing equipment carried by the operation and maintenance personnel, and the wiring part 22 is used to be electrically connected to the grounding protection equipment of the operation and maintenance personnel; and an extended grounding device 4, which is electrically connected to the metal rod 2, and the extended grounding device 4 is constructed to be extendably electrically connected to the grounding end of the testing equipment carried by the operation and maintenance personnel.

[0032] When in use, the top end of the metal rod 2 is electrically connected to the housing of the device to be grounded 1 and / or the grounding end of the device to be grounded 1, and the other end of the metal rod 2 extends downward along the support structure supporting the device to be grounded 1 until it is electrically connected to the underground grounding grid. When it is necessary to test whether the grounding of a device to be grounded 1 is normal, the test device can be electrically connected to the test part 21. The test part 21 protruding toward the side of the metal rod 2 will not cause the test part 21 to be too close to the wall of the support structure, thereby facilitating the operation and maintenance personnel to perform testing operations. For example, the power connection clamp for the test grounding can be clamped on the test part 21. Since the test part 21 protrudes toward the side of the metal rod 2, the power connection clamp can be conveniently clamped in without hindrance. The power connection clamp can clamp the metal rod 2 of the entire test part 21, and the clamping of the power connection clamp is relatively stable and not easy to fall off.

[0033] When the operation and maintenance personnel are conducting inspections and maintenance at the location where the equipment to be grounded 1 is located, the operation and maintenance personnel can electrically connect the grounding protection equipment they carry with them to the wiring part 22. The grounding protection equipment can protect the operation and maintenance personnel from electric shock. Specifically, the grounding protection equipment can be a metal bracelet or other type of grounding equipment worn by the operation and maintenance personnel.

[0034] In addition, when the operation and maintenance personnel conduct inspection and maintenance in the place where the equipment to be grounded 1 is located, if they need to use the test equipment they carry to test a certain equipment to be grounded 1, they first electrically connect the grounding end of the test equipment to the extended grounding device 4, and then electrically connect the electrical measuring end of the test equipment to the test part 21. The extendable extended grounding device 4 can be easily electrically connected to the test equipment, and there will not be too many restrictions on the distance between the test equipment and the metal rod 2. After grounding, the test equipment can move freely within the allowable range.

[0035] The test part 21 in the present invention is far away from the device to be grounded 1, which is convenient for the operation process of connecting the test device and the metal rod 2 to each other, and it is not easy to fall off after connection. The wiring part 22 can be used to electrically connect with the grounding protection equipment of the operation and maintenance personnel to protect the operation and maintenance personnel from electric shock. After the extendable extension grounding device 4 is electrically connected to the test equipment, the test equipment can move freely within a certain range, which is convenient for more flexible use of the test equipment.

[0036] Specifically, part of the surface of the metal rod 2 is coated with an insulating layer, and at least part of the surface of the test portion 21 is not coated with the insulating layer.

[0037] When in use, the insulating layer can prevent the metal rod 2 from leaking electricity, and a person will not be shocked even if he touches the metal rod 2. The insulating layer can be made of paint or some surface coating materials that can be attached to the surface of the metal rod 2. The bare metal rod 2 body that is not coated with the insulating layer on the test part 21 can be used to be electrically connected to the test equipment, and the bare metal rod 2 body can make the test equipment and the metal rod 2 conduct electricity to each other.

[0038] Specifically, the test portion 21 is a bent rod body, and the test portion 21 is bent along a portion of the outer wall of the metal rod 2 to form a groove. In this embodiment, the test portion 21 can be in the form of a bent rod body, that is, a portion of the metal rod 2 is bent laterally to form the test portion 21, and the test portion 21 and the metal rod 2 are a whole. In actual use, the test portion 21 can maintain a certain distance from the device to be grounded 1, so that the test device can be easily electrically connected to the bent rod body. There will be no problem that the test portion 21 is too close to the device to be grounded 1, making it difficult for the test device to be connected to the test portion 21.

[0039] Specifically, the wiring portion 22 has a protrusion, which protrudes outward along a portion of the outer wall of the metal rod 2. Since the metal rod 2 is an upright rod body, it is difficult to connect some objects to the body of the metal rod 2. In this embodiment, the protrusion can facilitate the operation and maintenance personnel to electrically connect their own grounding protection equipment and the wiring portion 22, and the operation and maintenance personnel do not need to use special equipment to connect the grounding protection equipment to the metal rod 2. After the grounding protection equipment and the protrusion are connected to each other, the protrusion can also ensure that the connection structure of the grounding protection equipment will not fall off, shift, etc.

[0040] Specifically, the protrusion includes a wiring assembly, which is electrically connected to the metal rod 2 and is used to electrically connect to the ground terminal of the test equipment. The wiring assembly can adopt various types of electrical connection assemblies to electrically connect to the test equipment.

[0041] Specifically, the wiring assembly includes a wiring board, and the wiring board is provided with a connecting through hole. In this embodiment, the test equipment only needs to be connected to the connecting through hole, and the connecting through hole can ensure the stability of the connection and prevent the test equipment from falling off. For example, the test equipment can lead out a connector, and the connector can be passed through the connecting through hole.

[0042] Specifically, the extended grounding device 4 includes:

[0043] An extension component 41, one end of the extension component 41 is used to be electrically connected to the test equipment, and the other end of the extension component 41 is electrically connected to the metal rod 2; and

[0044] The winding assembly 42 is rotatably connected to the metal rod 2 , and the extension assembly 41 is at least partially wound around the winding assembly 42 . The winding assembly 42 is configured to wind up and unwind the extension assembly 41 .

[0045] The extension assembly 41 can improve the position flexibility of the test equipment, and the test equipment can move freely within the allowable range of the extension assembly 41, thereby improving the freedom of movement of the operation and maintenance personnel during the test work. In addition to improving the position flexibility of the test equipment, the extension assembly 41 can also ensure that the test equipment can be continuously grounded, thereby preventing the test equipment from being damaged by electric shock, and also preventing the operation and maintenance personnel using the test equipment from being injured by electric shock.

[0046] Specifically, the extension assembly 41 is a cable having a metal wire inside;

[0047] The winding assembly 42 includes:

[0048] The reel 421 is rotatably connected to the metal rod 2 , and the cable is wound around the reel 421 .

[0049] When the test device is working, the test device can be moved to a desired position by stretching the cable. The reel 421 rotates when the cable is pulled. When the cable needs to be stored, the reel 421 is controlled to rotate to reel in the cable.

[0050] Specifically, the winding component 42 also includes:

[0051] Handle The handle 422 is arranged on the reel 421 .

[0052] In this case, the reel 421 can be manually operated to rotate by holding the handle 422 to reel in the cable. The structure is simple and the operation process is convenient and quick.

[0053] In addition, the winding assembly 42 also includes:

[0054] The motor 423 includes a driving shaft 4231 , and the driving shaft 4231 and the rotating shaft of the reel 421 are connected to each other.

[0055] In this case, the motor 423 can be used to automatically drive the reel 421 to rotate, thereby winding the cable. This structure can be applied to automated cable winding operations and save manpower.

[0056] Exemplary Grounding Devices

[0057] Figure 1 FIG. 1 is a schematic diagram of the structure of a grounding device provided in one embodiment of the present application. Figure 1 As shown, the present application provides a grounding device, the grounding device comprising:

[0058] A metal rod 2, one end of which is electrically connected to the device to be grounded 1, and the other end of the metal rod 2 is electrically connected to the ground wire 3; the metal rod 2 has a testing portion 21 and a wiring portion 22, the testing portion 21 is concave along a portion of the outer wall of the metal rod 2 to form a groove, the testing portion 21 is used to electrically connect to the electrical measuring end of the testing equipment carried by the operation and maintenance personnel, and the wiring portion 22 is used to electrically connect to the grounding protection equipment of the operation and maintenance personnel; and

[0059] The extended grounding device 4 is electrically connected to the metal rod 2 , and the extended grounding device 4 is configured to be extendably electrically connected to a ground terminal of a testing device.

[0060] Specifically, part of the surface of the metal rod 2 is coated with an insulating layer, and at least part of the surface of the test portion 21 is not coated with the insulating layer.

[0061] like Figure 1 As shown, the test portion 21 is a bent rod body, and the test portion 21 is bent along a portion of the outer wall of the metal rod 2 to form a groove.

[0062] Figure 2FIG. 1 is a schematic diagram of the structure of a metal rod in a grounding device provided by an embodiment of the present application. Figure 2 As shown, the test portion 21 may also be a non-arc protruding rod body, and the protruding rod body has two right-angled inner angles, that is, the protruding rod body is composed of three straight rods.

[0063] Figure 3 FIG. 2 is a schematic diagram showing the structure of another embodiment of a metal rod in a grounding device of the present application. Figure 3 As shown, the wiring portion 22 has a protrusion 221 , and the protrusion 221 protrudes outward along a portion of the outer wall of the metal rod 2 .

[0064] Figure 4 FIG. 1 is a top view of a metal rod in a grounding device provided by an embodiment of the present application. Figure 4 As shown, the wiring assembly of the protruding portion includes: a wiring board 222, and the wiring board 222 is provided with a connecting through hole 223.

[0065] Figure 5 FIG. 1 is a partial structural diagram of a grounding device provided by an embodiment of the present application. Figure 5 As shown, the extension grounding device 4 includes: an extension component 41, one end of the extension component 41 is used to be electrically connected to the test equipment, and the other end of the extension component 41 is electrically connected to the metal rod 2; and a winding component 42, the winding component 42 is rotatably connected to the metal rod 2, the extension component 41 is at least partially wound around the winding component 42, and the winding component 42 is constructed to wind up the extension component 41.

[0066] Figure 6 Shown Figure 5 A schematic diagram of a specific embodiment of the structure. Figure 6 As shown, the extension component 41 is a cable with a metal wire inside; wherein the winding component 42 includes: a reel 421, the reel 421 is rotatably connected to the metal rod 2, and the cable is wound on the reel 421.

[0067] Figure 7 FIG. 1 is a schematic diagram of the structure of an extended grounding device in a grounding device provided in an embodiment of the present application. Figure 7 As shown, the winding assembly 42 further includes a handle 422 disposed on the reel 421 .

[0068] Figure 8 FIG. 1 is a schematic diagram of the structure of an extended grounding device in a grounding device provided by another embodiment of the present application. Figure 8 As shown, the winding assembly 42 further includes: a motor 423, the motor 423 includes a driving shaft 4231, and the driving shaft 4231 and the rotating shaft of the reel 421 are connected to each other.

[0069] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0070] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0071] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0072] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features of the present invention.

[0073] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A grounding device, characterized in that: The grounding device comprises: A metal rod, one end of which is electrically connected to the device to be grounded, and the other end of which is electrically connected to the ground wire; the metal rod has a test portion and a wiring portion, the test portion is concave along a portion of the outer wall of the metal rod to form a groove, the test portion is used to electrically connect to the electrical measuring end of the test device, the wiring portion is used to electrically connect to the grounding protection device, the wiring portion has a protrusion, and the protrusion protrudes outward along a portion of the outer wall of the metal rod; and An extended grounding device is electrically connected to the metal rod, and the extended grounding device is configured to be extendably electrically connected to a grounding terminal of the testing device.

2. The grounding device according to claim 1, characterized in that: A portion of the surface of the metal rod is coated with an insulating layer, and at least a portion of the surface of the test portion is not coated with the insulating layer.

3. The grounding device according to claim 1, characterized in that: The testing part is a bent rod body, and the testing part is bent along a portion of the outer wall of the metal rod to form a groove.

4. The grounding device according to claim 1, characterized in that: The raised portion comprises: A wiring assembly is electrically connected to the metal rod, and the wiring assembly is used to electrically connect to the ground terminal of the test equipment.

5. The grounding device according to claim 4, characterized in that: The wiring assembly comprises: A wiring board is provided with a connecting through hole.

6. The grounding device according to claim 1, characterized in that: The extended grounding device comprises: an extension assembly, one end of which is used to be electrically connected to the test device, and the other end of which is electrically connected to the metal rod; and The winding assembly is rotatably connected to the metal rod, the extension assembly is at least partially wound around the winding assembly, and the winding assembly is configured to wind up the extension assembly.

7. The grounding device according to claim 6, characterized in that: The extension component is a cable with a metal wire inside; Wherein, the winding component comprises: A reel is rotatably connected to the metal rod, and the cable is wound around the reel.

8. The grounding device according to claim 7, characterized in that: The winding assembly also includes: A handle is arranged on the reel.

9. The grounding device according to claim 7, characterized in that: The winding assembly also includes: The motor comprises a driving shaft, wherein the driving shaft and the rotating shaft of the reel are connected to each other.

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