CN219843159U - Grounding device - Google Patents

Abstract

The utility model provides a grounding device, which comprises an insulating rod and a connector assembly, wherein the connector assembly comprises an electroscope connector, a pull rod connector and a grounding wire connector, the electroscope connector is used for checking whether equipment or a circuit is electrified, the pull rod connector is used for switching on or switching off a high-voltage isolating switch, and the grounding wire connector is used for grounding the equipment or the circuit; one end of the insulating rod is provided with a first connecting part, one ends of the electroscope connector, the pull rod connector and the ground wire connector are provided with a second connecting part, and one of the electroscope connector, the pull rod connector and the ground wire connector is detachably connected with the insulating rod through the first connecting part and the second connecting part. Through connect insulating rod with pull rod joint, electroscope joint and earth connection in proper order, can carry out the outage in proper order, examine electric and earth connection work, ensure the safety of maintenance operation personnel. When the operator carries out the earthing operation, the safety tool has less weight and is convenient to carry.

Description

Grounding device

Technical Field

The utility model relates to the technical field of electric power safety equipment, in particular to a grounding device.

Background

At present, before the work such as outdoor equipment overhaul and preventive test is carried out on a new energy station, for safety reasons, a grounding device is required to be used for grounding at a construction site, so that the construction site is in low-potential protection, and electric shock of operators is avoided. The main operation process of grounding is as follows: firstly, the electricity of the working line is stopped, then an electroscope is used for checking whether the construction site is electrified, and after the construction site is determined to be uncharged, the grounding wire is hung.

In the prior art, when working such as power failure, electricity inspection and grounding, an operator needs to carry a plurality of safety tools such as a grounding wire, an electroscope and an insulating glove, go to a construction site and finish grounding operation.

However, the number of safety tools is large, and the safety tools are inconvenient for operators to carry.

Disclosure of Invention

The utility model provides a grounding device, which solves the problems that the prior grounding operation requires a large number of safety tools and is inconvenient to carry.

The technical scheme of the utility model is as follows:

the utility model provides a grounding device, includes insulator spindle and joint Assembly, joint Assembly includes electroscope joint, pull rod joint and earth connection joint, the electroscope joint is used for checking whether equipment or circuit is electrified, the pull rod joint is used for switching on or off isolator, the earth connection joint is used for grounding equipment or circuit.

One end of the insulating rod is provided with a first connecting part, one ends of the electroscope connector, the pull rod connector and the ground wire connector are provided with second connecting parts, and one of the electroscope connector, the pull rod connector and the ground wire connector is detachably connected with the insulating rod through the first connecting part and the second connecting part.

In an optional aspect of the above grounding device, one of the first connection portion and the second connection portion is an internal thread, and the other is an external thread matched with the internal thread.

In an optional technical solution of the above grounding device, the insulating rod includes a main rod and an extension rod, the main rod is detachably connected with the extension rod, and the second connection portion is located on the main rod.

In an alternative technical scheme of the grounding device, the main rod is connected with the extension rod through threads or is clamped.

In an alternative solution of the above grounding device, at least one safety distance warning ring is provided on the extension rod.

In the above-mentioned earthing device's alternative technical scheme, the cover is equipped with the backing ring on the extension rod, the safe distance warning ring is located the backing ring with between the mobile jib, the backing ring with the extension rod deviates from between the one end of mobile jib the extension rod forms handheld portion.

In an optional technical scheme of the grounding device, the grounding device further comprises a near-electricity alarm, and the near-electricity alarm is arranged on the main rod.

In an optional technical scheme of the grounding device, the grounding wire connector comprises a connector body and an insulating grounding wire, wherein the insulating grounding wire is arranged on the connector body and is used for being connected with the ground.

In the optional technical scheme of the grounding device, the electroscope connector is an audible and visual alarm electroscope connector, and the electroscope connector is provided with a buzzer module and an alarm indicator lamp.

In an alternative solution of the above grounding device, the voltage of the electroscope connector and the ground wire connector is 110kV or 35kV.

The beneficial effects of the utility model are as follows:

the utility model provides a grounding device which comprises an insulating rod and a connector assembly, wherein the connector assembly comprises an electroscope connector, a pull rod connector and a grounding wire connector, and one of the electroscope connector, the pull rod connector and the grounding wire connector can be detachably connected with the insulating rod. By connecting the insulating rod and the electroscope joint, a high-voltage electroscope can be formed to check whether the equipment or the circuit is electrified; a brake pulling rod can be formed by connecting the insulating rod and the pull rod joint so as to switch on or off the high-voltage electric brake; through connecting insulator spindle and earth connection joint, can form safe earth connection to with equipment or circuit ground connection, make the construction department be located in the protection of low potential, ensure the safety of maintenance operation personnel. Through the insulating rod respectively with electroscope joint, pull rod joint and earth connection connect can dismantle the connection, make the insulating rod repeatedly usable, reduced the quantity of the required insulating rod of earthing operation, safety tool's weight is less, the operating personnel of being convenient for carries.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.

Fig. 1 is a schematic structural diagram of a grounding device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the main lever in FIG. 1;

FIG. 3 is a schematic view of the construction of the extension pole of FIG. 1;

fig. 4 is a schematic structural diagram of an insulation rod and an electroscope joint in the grounding device according to the embodiment of the present utility model;

FIG. 5 is a schematic view of the electroscope joint of FIG. 4;

fig. 6 is a schematic structural diagram of an insulation rod and a pull rod joint in a grounding device according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the pull rod joint of FIG. 6;

fig. 8 is a schematic structural diagram of an insulating rod and a grounding wire connector in a grounding device according to an embodiment of the present utility model;

fig. 9 is a schematic structural view of the ground wire connector of fig. 8.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Reference numerals illustrate:

100-insulating rods;

110-a main lever;

111-a first connection;

120-extension bar;

121-a safety distance warning ring;

122-a baffle ring; 123-a hand-held part;

200-joint assembly; 201-a second connection;

210-electroscope joint;

220-tie-bar joints;

230-a ground wire connector;

231-a joint body; 232-insulating ground wire;

300-near electricity alarm.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

The terms first, second and the like in the description and in the claims of embodiments of the utility model and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe embodiments of the utility model herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present utility model, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate the azimuth or the positional relationship based on the azimuth or the positional relationship shown in the drawings. These terms are only used to better describe the present utility model and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in embodiments of the present utility model will be understood by those of ordinary skill in the art in view of the specific circumstances.

In addition, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the embodiments of the present disclosure may be understood by those of ordinary skill in the art according to specific circumstances.

In the prior art, a new energy station needs to be grounded by using a grounding device at a construction site before equipment overhaul and preventive tests are carried out, and the grounding operation is as follows: firstly, the electric brake is disconnected to stop the electricity of the working line, then an electroscope is used for checking whether the construction site is electrified, and after the construction site is determined to be uncharged, the grounding wire is hung on the construction site. When carrying out the earthing operation, the operating personnel need carry multiple safety tool such as earth connection, electroscope, insulating gloves and go to construction department, but, safety tool's quantity is more, weight is great, carries when being inconvenient for the operating personnel operation, if meet dangerous road or bad weather, the operating personnel carries multiple safety tool to go to construction department by foot when comparatively inconvenient.

Based on the above, the embodiment of the utility model provides a grounding device, which comprises an insulating rod and a connector assembly, wherein the connector assembly comprises an electroscope connector, a pull rod connector and a grounding wire connector, the electroscope connector is used for checking whether equipment or a circuit is electrified, the pull rod connector is used for connecting or disconnecting a high-voltage electric brake, and the grounding wire connector is used for grounding the circuit; one end of each of the electroscope connector, the pull rod connector and the ground wire connector is provided with a first connecting portion, one end of the insulating rod is provided with a second connecting portion, and the insulating rod is detachably connected with one of the electroscope connector, the pull rod connector and the ground wire connector through the first connecting portion. When the insulating rod is connected with the electroscope joint, a high-voltage electroscope can be formed, and the high-voltage electroscope is used for checking whether equipment or a circuit is electrified; when the insulating rod is connected with the pull rod joint, a brake pulling rod can be formed and used for switching on or switching off the high-voltage electric brake; when the insulating rod is connected with the grounding wire connector, a safe grounding wire can be formed and used for grounding equipment or a circuit, so that a construction position is positioned in the low-potential protection, and the safety of maintenance operators is ensured. The insulating rod is detachably connected with the pull rod connector, the electroscope connector and the ground wire connector respectively, so that the insulating rod is reused, the number of insulating rods required to be carried is small when an operator performs grounding operation, and the safety tool is small in weight and convenient to carry.

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings.

As shown in fig. 1 to 9, a grounding device includes an insulating rod 100 and a joint assembly 200, and the joint assembly 200 includes an electroscope joint 210, a pull rod joint 220 and a ground wire joint 230.

Electroscope connection 210 is used to check if the equipment or line is charged, pull rod connection 220 is used to turn the isolation switch on or off, and ground connection 230 is used to ground the equipment or line.

One end of the insulating rod 100 has a first connection portion 111, and one end of each of the electroscope joint 210, the pull rod joint 220 and the ground wire joint 230 has a second connection portion 201, and one of the electroscope joint 210, the pull rod joint 220 and the ground wire joint 230 is detachably connected with the insulating rod 100 through the first connection portion 111 and the second connection portion 201.

The insulating rod 100 is of a hollow tubular structure, and compared with a solid cylinder, the hollow tubular structure is small in mass, convenient to carry and labor-saving in operation of operators.

When the voltage level of the equipment or line is different, the safety distance between the worker and the adjacent live equipment or line is different. Therefore, the length of the insulating rod 100 can be set according to the voltage level of the equipment or the line, and the length of the insulating rod 100 must be greater than the safety distance between the worker and the live equipment or the line.

The insulating rod 100 is made of an insulating material.

Alternatively, the insulating rod 100 is made of an epoxy resin tube, and the epoxy resin tube has good insulating property, high mechanical strength, light weight, smooth appearance and convenient carrying.

The other end of the electroscope connector 210 is a metal probe, and when the metal probe is placed on equipment or a circuit, the electroscope connector 210 can detect whether the equipment or the circuit has an operating power frequency voltage or not by detecting current flowing through stray capacitance of the electroscope pair, so that operators can be reminded of by sending an alarm when the equipment or the circuit is electrified, and personal safety of the operators during power failure maintenance is ensured.

The other end of the pull rod joint 220 is provided with a pulling hook to open or close the disconnecting link of the disconnecting switch.

One end of the ground wire connector 230 is connected to the equipment or line, and the other end is connected to the ground, so that the equipment or line is grounded, thereby eliminating the induced voltage, discharging the remaining charge, and simultaneously avoiding accidents caused by sudden incoming calls of the equipment or line.

As shown in fig. 2, 6 and 7, in the grounding operation, the second connection portion 201 of the pull rod joint 220 is first connected with the first connection portion 111 of the insulation rod 100 to form a pull rod, and the switch of the high voltage isolating switch is opened by the pull rod to complete the switching operation.

The switching operation is an operation of converting electrical equipment from one state to another state, when equipment or a line is overhauled, the disconnecting switch is disconnected through the switching-out rod, the circuit breaker is in a disconnected state, and the corresponding grounding disconnecting switch is in a switching-on position.

As shown in fig. 2, 4 and 5, the second connection part 201 of the electroscope joint 210 is connected with the first connection part 111 to form a high voltage electroscope, and whether the equipment or the line is electrified is checked by the high voltage electroscope to ensure the safety of operators during power outage maintenance.

As shown in fig. 2, 8 and 9, after it is determined that the equipment or the line is not charged, the second connection part 201 of the ground wire connector 230 is connected to the first connection part 111 to form a safety ground wire, and one end of the safety ground wire is hung on the equipment or the line and the other end is connected to the ground to ground the equipment or the line, so that the equipment or the line is positioned in the protection of low potential to prevent an operator from getting an electric shock. After the safety ground wire is hung, the first connection portion 111 of the insulating rod 100 is separated from the second connection portion 201 of the ground wire connector 230 to avoid affecting the ground safety.

According to the utility model, the insulation rod 100 is sequentially connected with the pull rod connector 220, the electroscope connector 210 and the ground wire connector 230 to respectively form a brake pull rod, a high-voltage electroscope and a safe ground wire, so that power failure, electricity inspection and grounding work are sequentially performed, and the safety of maintenance operators is ensured. Through insulating rod 100 respectively with pull rod joint 220, electroscope joint 210 and earth connection joint 230 detachable connection to repeatedly usable insulating rod 100, the operating personnel is when carrying out the earthing operation, and the quantity of insulating rod 100 that needs to carry is less, and safety tool's weight is less, portable.

As shown in fig. 2, 5, 7, and 9, in some embodiments, one of the first and second connection portions 111 and 201 is internal threads and the other is external threads that mate with the internal threads.

Illustratively, the first connection portion 111 is externally threaded and the second connection portion 201 is internally threaded, the internal threads and the external threads being matched such that the first connection portion 111 is threadably coupled to the second connection portion 201. The threaded connection structure is stable and reliable, and the assembly and the disassembly are convenient.

Alternatively, one of the first connection portion 111 and the second connection portion 201 is a plug-in block, and the other is a positioning groove, and the positioning groove is matched with the contour of the plug-in block, so that the first connection portion 111 and the second connection portion 201 can be detachably connected by inserting the fixed plug-in block into the positioning groove.

As shown in fig. 2 and 3, in a specific implementation, the insulation rod 100 includes a main rod 110 and an extension rod 120, the main rod 110 is detachably connected to the extension rod 120, and the first connection part 111 is located on the main rod 110.

The first connection portion 111 is located at one end of the main lever 110, and the other end of the main lever 110 is detachably connected to the extension lever 120.

In the grounding operation, the main lever 110 is connected to the extension lever 120 such that the length of the insulation lever 100 is long. The safety tool is generally placed in a safety tool box, and after the grounding operation is completed, the main lever 110 is separated from the extension lever 120, so that the safety tool is convenient to store and carry.

As shown in fig. 2 and 3, in some embodiments, primary rod 110 is threaded or snapped into engagement with extension rod 120.

Illustratively, one of the end of the main rod 110 remote from the first connection portion 111 and the end of the extension rod 120 is an internal thread, and the other is an external thread, and the internal thread is matched with the external thread. The main lever 110 is screwed with the extension lever 120.

Optionally, a gasket is arranged between the internal thread and the external thread, so as to increase the firmness of the threaded connection.

Illustratively, one of the end of the main lever 110 away from the first connecting portion 111 and the end of the extension lever 120 has a buckle, and the other has a buckle hole, and the buckle matches the profile of the buckle hole. The main rod 110 is clamped with the extension rod 120 by inserting the buckle in the buckle hole.

As shown in fig. 3, in a specific implementation, at least one safety distance warning ring 121 is provided on the extension rod 120.

The safety distance warning ring 121 is made of a material with sun-proof, rain-proof and aging-proof properties, and the color of the safety distance warning ring 121 is a color with higher saturation, such as red, yellow, orange, etc., so as to effectively remind operators of the safety distance between the high-voltage equipment and the line.

The safety distance warning ring 121 is wound on the surface of the extension rod 120, and the number of the safety distance warning rings 121 can be set according to the requirement.

Alternatively, the safety distance warning ring 121 may be made of a night light reflective material to alert the operator to safety at night.

As shown in fig. 1 to 3, in some embodiments, the extension rod 120 is sleeved with a stop ring 122, and a safety distance warning ring 121 is located between the stop ring 122 and the main rod 110, and the extension rod 120 between the stop ring 122 and an end of the extension rod 120 facing away from the main rod 110 forms a hand-held portion 123.

Wherein an operator holds the hand 123 to drive the insulation rod 100 and the connector assembly to move to the equipment or the line.

Illustratively, the handheld portion 123 is provided with a sheath made of a silicone rubber material, and the sheath is sleeved on the handheld portion 123 or is adhered to the outer wall of the handheld portion 123, so that the silicone rubber material has good insulation performance, high temperature resistance, ultraviolet resistance and aging resistance. The sheath surface is rough to increase friction and prevent the hand-held portion 123 from slipping off the operator's hand.

The baffle ring 122 is used for limiting the position of the hand-held part 123, and the hand-held part 123 is positioned on the extension rod 120 and is far away from equipment or a line, so that the safety of operators is ensured, and electric shock is avoided.

The safety distance warning ring 121 is located between the stop ring 122 and the main rod 110, so that the safety distance warning ring 121 is closer to the operator, thereby effectively reminding the operator of safety.

As shown in fig. 1 and 2, in some embodiments, the grounding device provided in the embodiments of the present utility model further includes a near-electricity alarm 300, where the near-electricity alarm 300 is disposed on the main pole 110.

Wherein the near-electricity alarm 300 is close to the first connection portion 111 of the main lever 110. The near-electricity alarm 300 is provided with a buzzer module, which can give an alarm.

Illustratively, the near-electricity alarm 300 is screwed to the main pole 110.

Before an operator goes to a high-voltage dangerous area, the gear of the near-electricity alarm 300 is set to be in accordance with the voltage level of equipment and lines, the near-electricity alarm 300 determines an alarm distance according to the voltage level of the site, and when the distance between the near-electricity alarm 300 and the equipment or the lines reaches the alarm distance, the near-electricity alarm 300 sounds an alarm to remind the operator.

As shown in fig. 8 and 9, in a specific implementation, the ground wire connector 230 includes a connector body 231 and an insulating ground wire 232, the insulating ground wire 232 being disposed on the connector body 231, the insulating ground wire 232 being for connection to ground.

The connector body 231 has an n-shaped structure, and the connector body 231 is made of a metal conductive material. When the safety ground wire is hung, the conductor portion of the equipment or line passes through the n-shaped structure of the connector body 231. One end of the joint body 231 has a second connection portion 201.

Optionally, the connector body 231 has a connector clip, and the connector body 231 is fixed on the conductor of the device or the line through the connector clip, so that the connector body 231 is stable and not easy to fall off when being hung on the conductor of the device or the line.

Wherein the cross-sectional area of the insulating ground wire 232 is not less than 25mm2. One end of the insulating ground wire 232 is fixedly connected with the connector body 231 and is close to the second connection portion 201 of the ground wire connector 230; the other end of the insulating ground wire 232 is a ground electrode for connection to ground.

Optionally, the outer layer of the insulating ground wire 232 is provided with a luminescent coating, so that an operator can clearly identify the position of the insulating ground wire 232, thereby avoiding accidents caused by misjudging the position of the insulating ground wire 232.

In the grounding operation, the grounding electrode of the insulating grounding wire 232 is first connected to the ground, and then the connector body 231 is hung on the conductor of the equipment or the line to ground the equipment or the line, thereby ensuring the safety of the operator.

As shown in fig. 4 and 5, in some embodiments, the electroscope joint 210 is an audible and visual alarm electroscope joint, and a buzzer module and an alarm indicator lamp are disposed on the electroscope joint 210.

The main types of electroscope contacts 210 are light emitting electroscope contacts, audible and visual alarm electroscope contacts, and windmill electroscope contacts. The embodiment adopts an audible and visual alarm electroscope joint.

The audible and visual alarm electroscope connector comprises a connector shell, a metal probe, an alarm indicator lamp and a buzzer module, wherein the alarm indicator lamp and the buzzer module are arranged on the connector shell, and the audible and visual alarm is adopted to ensure operation safety.

The joint of the audible and visual alarm electroscope has high sensitivity and strong anti-interference capability, and can not be interfered by a strong electric field.

When the electroscope joint 210 is subjected to electroscope operation, firstly, the metal probe of the electroscope joint 210 is moved to equipment or a circuit, the metal probe is contacted with the equipment or the circuit, if the equipment or the circuit is electrified, a buzzer module of the electroscope joint 210 sounds, and meanwhile, an alarm indicator light emits light; if the device or line is not electrified, the buzzer module of the electroscope connector 210 does not sound a buzzer, and the alarm indicator light does not emit light.

Alternatively, a detection button may be provided on the electroscope connector 210, and after the detection button is pressed, the alarm indicator lights flash intermittently, and the buzzer module sounds intermittently. The detection button is used for detecting whether the buzzer module and the alarm indicator lamp work normally or not, and the electric shock of a worker caused by the fact that the audible and visual alarm electroscope joint cannot give out an alarm prompt is avoided.

As shown in fig. 1, in some embodiments, the electroscope connection 210 and the ground connection 230 are at a voltage of 110kV or 35kV.

Among the voltage classes of electroscope connection 210 and ground connection 230 are: 6kV, 10kV, 35kV, 110kV, 220kV and 500kV. In this embodiment, the electroscope connection 210 and the ground connection 230 are selectable at voltage levels of 110kV and 35kV.

In particular implementations, if the electroscope connector 210 does not match the voltage level of the device or line, a false determination may be made when detecting whether the device or line is powered. If the electroscope connector 210 with lower voltage level is used to detect the equipment or the line with higher voltage level, the safety of the operators is not guaranteed. Thus, the voltage level of electroscope connection 210 should be consistent with the voltage level of the device or line.

When the voltage levels of the ground connection 230 are different, the cross-sectional areas of the insulated ground lines 232 are different, and the cross-sectional areas of the insulated ground lines 232 should be matched with the voltage of the equipment or the line, so that the voltage level of the ground connection 230 should be consistent with the voltage level of the equipment or the line.

In a specific implementation, the voltage class of the device or line is first determined, the electroscope connection 210 and the ground connection 230 are selected to match the voltage class of the device or line, and then the electroscope and ground operations are performed.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains and as may be applied to the instant claims and the description and examples are to be considered as exemplary only. The scope of the utility model is limited only by the appended claims.

Claims (10)

1. A grounding device, comprising: the insulation rod and connector assembly comprises an electroscope connector, a pull rod connector and a ground wire connector; the electroscope connector is used for checking whether equipment or a circuit is electrified or not, the pull rod connector is used for switching on or switching off the isolating switch, and the grounding wire connector is used for grounding the equipment or the circuit;

one end of the insulating rod is provided with a first connecting part, one ends of the electroscope connector, the pull rod connector and the ground wire connector are provided with second connecting parts, and one of the electroscope connector, the pull rod connector and the ground wire connector is detachably connected with the insulating rod through the first connecting part and the second connecting part.

2. The grounding device of claim 1, wherein one of the first and second connection portions is internal threads and the other is external threads that mate with the internal threads.

3. The grounding device according to claim 1, wherein the insulating rod includes a main rod and an extension rod, the main rod being detachably connected to the extension rod, the second connecting portion being located on the main rod.

4. A grounding device according to claim 3, wherein the main rod is screwed or snapped onto the extension rod.

5. The grounding device of claim 4 wherein said extension rod is provided with at least one safety distance warning ring.

6. The grounding device of claim 5 wherein said extension rod is sleeved with a stop ring, said safety distance warning ring being located between said stop ring and said main rod, said stop ring and said extension rod forming a hand-held portion between an end of said extension rod facing away from said main rod.

7. A grounding device as in claim 3 further comprising a near-electrical alarm disposed on said boom.

8. A grounding device according to any one of claims 1 to 7, wherein the grounding wire connector comprises a connector body and an insulating grounding wire provided on the connector body, the insulating grounding wire being for connection to ground.

9. A grounding device according to any one of claims 1 to 7, wherein the electroscope connector is an audible and visual alarm electroscope connector, and a buzzer module and an alarm indicator lamp are arranged on the electroscope connector.

10. A grounding device according to any one of claims 1 to 7, wherein the electroscope connection and the ground connection have a voltage of 110kV or 35kV.