CN209516060U - A wire grounding device for maintenance of electrical equipment in a substation - Google Patents

Abstract

The utility model provides a wire grounding device for maintenance of electrical equipment in a substation, which includes an insulating operating rod, a mount lock assembly used to mount the wire of the electrical equipment when in use, a ground wire electrically connected to the mount lock assembly, and according to The horizontal or vertical arrangement of the wires of the electrical equipment in the substation is based on the reversing transmission device connected vertically or horizontally with the hooked locking assembly and fixedly connected with the insulating operating rod. The reversing transmission device includes a gearbox, a first bevel gear, a second bevel gear, Bearings, vertical rotating shafts, horizontal rotating shafts and the third connecting piece; the hooking locking assembly includes a transmission rod, a fourth connecting piece, a threaded driving rod, a mounting plate, a locking tongue, a hooking elbow and a grounding wire fixing piece. When in use, by rotating the insulating operating rod through the transmission of the reversing transmission device, the locking tongue of the articulated locking assembly can be moved upward or to the left to cooperate with the articulated elbow to clamp the horizontal wire or the vertical wire to the ground. When the utility model is used, the operation is convenient, safe and reliable, and the work efficiency is improved.

Description

A wire grounding device for maintenance of electrical equipment in a substation

technical field

The utility model relates to a substation electrical equipment maintenance auxiliary tool, in particular to a substation electrical equipment maintenance wire grounding device.

Background technique

The maintenance of electrical equipment in substations generally needs to be carried out when the equipment is powered off. In order to ensure the personal safety of the maintenance personnel, it is also necessary to ground the wires at both ends of the electrical equipment through the grounding wire to prevent the life of the maintenance personnel from being endangered by a sudden power call during the maintenance process. , so the grounding wire is also called the "lifeline" of maintenance personnel in the industry, so it is necessary to ground the wires at both ends of the equipment before the maintenance of electrical equipment. The wire grounding device commonly used in the industry is generally composed of an insulating operating rod, a clip connector vertically fixed on the upper end of the insulating operating rod, and a grounding wire that is fixedly connected and electrically connected to the clip connector. Lift the insulating operating lever, hook the clamping connector and the wire, and then tighten the clamping connector by rotating the operating rod. The wires of electrical equipment in substations are generally arranged in two ways: horizontal and vertical. The above-mentioned common wire grounding device can be effectively applied to the wires arranged in the horizontal direction, but for the wires arranged vertically, the maintenance personnel need to stand at the same height as the equipment wires , hold the insulated operating rod horizontally, and then horizontally hook the card joint and the equipment wire, and tighten the operation. When the maintenance personnel operate at a position equal to the equipment wire, they must consider the height of the electrical equipment itself from the ground, and also consider The safe distance from live parts greatly increases the risk of operation.

In order to solve the above problems, the Chinese patent document with the authorized announcement number CN203150874U provides a universal grounding wire, which is designed and installed between the insulating operating rod and the grounding wire clip (card joint) for steering direction The adjustment device achieves the effect of changing the operating direction of the grounding wire clamp, so as to adapt to the grounding when the electrical equipment wires of the substation are vertical wires, and prevent maintenance personnel from standing at the same height as the equipment wires. Its existing problems are: firstly, its grounding wire clamp is connected with the insulating operating rod through the connecting plate and the shaft sleeve, and the direction of the grounding wire clamp is adjusted through the universal joint and the connecting plate during use. When the equipment wire is hooked, the grounding clamp is easy to shake, which brings unsafe factors; at the same time, its insulating operating rod adopts a traditional rod body connected by multi-section threaded rods. It is easy to loosen with the connection between the bars, and there are unsafe factors equally.

Utility model content

The purpose of this utility model is: aiming at the problems existing in the prior art, to provide a structurally improved substation electrical equipment maintenance wire grounding device. Implement grounding safely.

The technical solution of the utility model is: the utility model of the substation electrical equipment maintenance lead wire grounding device, including an insulating operating rod for hand-held operation, an articulated locking assembly used to articulate with the electrical equipment wire when in use, and, with The grounding wire electrically connected to the above-mentioned articulated locking assembly has a structural feature: it also includes a reversing transmission device, and the above-mentioned reversing transmission device includes a gearbox, a first bevel gear, a second bevel gear, a bearing, a vertical shaft, a lateral The shaft and the third connecting piece;

The above-mentioned gear box is a hollow square box body surrounded by front, rear, upper, lower, left, and right plates. The upper plate, lower plate and left plate of the gear box are each equipped with a total of 3 Bearing installation holes; the first bevel gear and the second bevel gear are arranged in the gearbox; there are 3 bearings, and each of the 3 bearings is fixed in the 3 bearing installation holes of the gearbox; the vertical shaft passes through It passes through the gearbox and is fixedly connected with the inner rings of the two bearings fixedly installed on the upper and lower plates of the gearbox with interference fit; the first bevel gear is fixedly connected with the vertical shaft; the right part of the horizontal shaft is fixedly installed on the gear The inner ring of the bearing on the left plate of the box is fixedly connected by interference fit; the right end of the horizontal shaft is connected to the second bevel gear; the second bevel gear is connected to the first bevel gear; One end and the left end of the horizontal shaft are respectively fixed; the reversing transmission device is fixedly connected with the insulating operating rod by the third connecting piece fixed on the lower end of the vertical shaft; the reversing transmission device is fixed on the upper end of the vertical shaft The third connecting piece or the third connecting piece fixed on the left end of the horizontal rotating shaft is in transmission connection with the hitch locking assembly.

A further solution is: the above-mentioned insulating operating rod includes a base rod, an extension rod, a first connecting piece and a second connecting piece; the above-mentioned first connecting piece includes a pin sleeve, a socket sleeve, a connecting pin and a lock nut, and It is above the pin sleeve and is integrally or fixedly connected with the pin sleeve. There are threads on the outer peripheral wall of the socket sleeve. There is a hexagonal socket hole in the socket sleeve. The lock nut and the thread on the outer peripheral wall of the socket sleeve Coordinated on the socket sleeve, the first connecting piece is socketed with the upper end of the base rod and the extension rod by its pin sleeve, and then pinned with the upper end of the base rod and the extension rod by the connecting pin; the second connecting piece is made of a screw rod and a hexagon socket The hexagonal plug-in post is set under the screw rod and is integrated or fixedly connected with the screw rod. The second connecting piece is fixedly set at the lower end of the extension rod; The column is mated with the inner hexagon socket hole of the socket sleeve of the first connector fixed on the upper end of the base rod, and then the lock nut of the first connector is threadedly connected with the screw rod of the second connector;

The structure of the third connecting piece of the above-mentioned reversing transmission device is the same as that of the second connecting piece of the insulating operating rod. The first connecting piece at the upper end of the extension rod is matched and fixedly connected.

A further solution is: the above-mentioned articulated locking assembly includes a transmission rod, a fourth connecting piece, a threaded drive rod, a mounting plate, a locking tongue, an articulated elbow, and a ground wire fixing piece;

The structure of the above-mentioned fourth connecting piece is the same as that of the first connecting piece of the insulating operating rod. The fourth connecting piece is fixed at one end of the transmission rod, and the threaded driving rod is fixed at the other end of the transmission rod; The plate body part of the screw hole, the locking tongue is a block with a notch on the upper end surface, the threaded driving rod matches the screw hole of the mounting plate, and the upper end of the threaded driving rod protrudes upwards from the upper end of the mounting plate and connects with the lock The tight tongue is fixedly connected, and the articulated elbow is fixed on one side of the mounting plate. When in use, the articulated elbow is articulated with the wires of the electrical equipment of the substation, and the wires of the electrical equipment of the substation are locked by the locking tongue under the drive of the threaded drive rod. tight; the grounding wire fixture is fixed on the lower part of the articulated elbow and is electrically connected to the articulated elbow; the upper end of the grounding wire is fixedly connected and electrically connected to the articulated elbow through the grounding wire fixture; when used, when When the wires of the electrical equipment in the substation are set horizontally, the hooking locking assembly is fixedly connected by its fourth connecting piece to the third connecting piece fixed on the vertical shaft of the reversing transmission device; when the wires of the electrical equipment in the substation are set vertically, the hanging The connecting and locking assembly is fixedly connected by its fourth connecting piece to the third connecting piece fixed on the transverse rotating shaft of the reversing transmission device.

A further solution is: the gear box of the above-mentioned reversing transmission device is provided with a ground wire connection fixture; The elbow is fixedly connected and electrically connected; the lower end of the upper section grounding wire and the upper end of the lower section grounding wire are fixedly connected and electrically connected through the grounding wire connecting fixture of the reversing transmission device.

A further solution is: the grounding end of the lower section of the grounding wire is equipped with a wire clamp or a special grounding lock for five protections.

The utility model has positive effects: (1) The wire grounding device for substation electrical equipment maintenance of the utility model is a reversing transmission device designed on the principle of changing the direction of force by using bevel gears to cooperate with rotation, and the reversing transmission device and insulation operation The structural design of the connection method between the rod and the articulated locking component makes it possible to vertically connect the articulated locking component and the reversing transmission device according to the actual operation needs of the horizontal and vertical settings of the wires of the electrical equipment in the substation. Or horizontal connection, when connecting, you only need to insert and tighten the nuts. At the same time, when hooking and locking the electrical equipment wires of the substation, since the reversing transmission adopts the bevel gear plus bearings, it is very easy to rotate the operating lever and save energy. Save time and effort, improve work efficiency. (2) The wire grounding device for substation electrical equipment inspection and maintenance of the utility model uses two specially designed connectors to make the connection between the base rod and the extension rod of the insulating operating rod, between the extension rod and the reversing transmission device, and between the reversing The connection between the transmission device and the articulated locking assembly is fast and convenient, and it is very firm and will not shake, so it can effectively overcome the inconvenience caused by the loosening and shaking of the connection part of the insulating operating rod and the connection of each component in the similar device in the prior art. Technical issues of safety factors.

Description of drawings

Fig. 1 is the structural representation when the utility model is used for the grounding of the horizontal wire of the substation electrical equipment;

Fig. 2 is the structure diagram when the utility model is used for the grounding of the vertical wire of the substation electrical equipment;

Fig. 3 is a structural schematic view of the extension rod of the insulating operating rod in Fig. 1 after the first and second connectors are added;

Fig. 4 is a schematic structural diagram enlarged at place A in Fig. 3;

Fig. 5 is a C-C cross-sectional view of Fig. 4;

Fig. 6 is the enlarged structural schematic diagram of place B in Fig. 3;

Fig. 7 is a schematic structural view of the reversing transmission device in Fig. 1;

Fig. 8 is a sectional view taken along line D-D of Fig. 7 .

The reference signs in the above-mentioned accompanying drawings are as follows:

Insulated operating rod 1, base rod 11, extension rod 12, first connecting piece 13, pin sleeve 13-1, socket sleeve 13-2, hexagon socket hole 13-2-1, connecting pin 13-3, lock Tight nut 13-4, second connector 14, screw rod 14-1, hexagonal plug post 14-2;

Reversing transmission device 2, gear box 21, first bevel gear 22, second bevel gear 23, bearing 24, vertical shaft 25, horizontal shaft 26, third connecting piece 27, grounding wire connecting fixture 28;

articulated locking assembly 3, transmission rod 31, fourth connecting piece 32, threaded drive rod 33, mounting plate 34, locking tongue 35, articulated elbow 36, ground wire fixing piece 37;

Ground wire 4, wire clip 41.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

(Example 1)

See Fig. 1 and Fig. 2, the grounding device for maintenance wires of substation electrical equipment in this embodiment is mainly composed of an insulating operating rod 1, a reversing transmission device 2, a articulated locking assembly 3 and a grounding wire 4.

Referring to FIGS. 3 to 6 , the insulating operating rod 1 is mainly composed of a base rod 11 , an extension rod 12 , a first connecting piece 13 and a second connecting piece 14 . The base rod 11 and the extension rod 12 are circular rod body parts of insulating material, and the upper ends of the base rod 11 and the extension rod 12 are provided with pin holes for connection, and the quantity of the extension rod 12 is set according to the needs of the construction site. The first connector 13 is mainly composed of a pin sleeve 13-1, a socket sleeve 13-2, a connecting pin 13-3 and a lock nut 13-4, and the socket sleeve 13-2 is located above the pin sleeve 13-1 and It is integrated or fixedly connected with the pin sleeve 13-1, the outer peripheral wall of the socket sleeve 13-2 is provided with threads, and the socket sleeve 13-2 is provided with an inner hexagon socket hole 13-2-1, and a lock nut 13- 4 Cooperate with the screw thread on the outer peripheral wall of the socket sleeve 13-2 and set it on the socket sleeve 13-2. The first connecting piece 13 is fixedly arranged on the upper end of the base rod 11 and the upper end of each extension rod 12. Specifically, The way is that after the first connector 13 is socketed with the upper ends of the base rod 11 and the extension rod 12 by its pin sleeve 13-1, the first connector 13 is pin-connected with the base rod 11 and the extension rod 12 by using the connecting pin 13-3. The second connecting piece 14 is made up of screw rod 14-1 and hexagonal plug-in post 14-2, and hexagonal plug-in post 14-2 is located at the bottom of screw rod 14-1 and is integrally or fixedly connected with screw rod 14-1, and the second connecting piece 14 is fixedly arranged at the lower end of each extension rod 12, and the second connecting member 14 is fixedly connected with the lower end of the extension rod 12 by the upper end of the screw rod 14-1. When the insulating operating rod 1 needs to be lengthened, an extension rod 12 is fixedly arranged on the hexagonal plug-in post 14-2 of the second connector 14 at its lower end and the first connector 13 fixed on the upper end of the base rod 11. The inner hexagon socket hole 13-2-1 of the socket 13-2 is mated and inserted, and then the lock nut 13-4 of the first connector 13 and the screw rod 14-1 of the second connector 14 are matched and threaded. , so that the first extension rod 12 is fixed above the base rod 11; if it needs to be extended, the same connection method is adopted, and another extension rod is fixedly connected above the first extension rod 12, and so on . The insulated operating rod of this embodiment, through the structural design of the mutual cooperation of the first connecting part and the second connecting part, makes the connection between the base rod 11 and the extension rod 12 and the two adjacent extension rods 12 firm and reliable during use. , there will be no loosening of the mutual connection due to the rotation operation, which can effectively solve the problem that the traditional insulating operating rod in the prior art is connected by multi-section threaded rods. The connection between them is easy to loose and there is a problem of unsafe factors.

7 and 8, the reversing transmission device 2 is mainly composed of a gearbox 21, a first bevel gear 22, a second bevel gear 23, a bearing 24, a vertical shaft 25, a horizontal shaft 26, a third connecting piece 27 and a ground wire The connecting fixture 28 is formed.

The gear case 21 is a hollow square box body part surrounded by each plate of the front, rear, upper, lower, left and right. The upper plate, the lower plate and the left plate of the gear case 21 are respectively provided with a total of 3 a bearing mounting hole; the first bevel gear 22 and the second bevel gear 23 are arranged in the gear case 21; the bearings 24 are provided with 3, and the 3 bearings 24 are fixedly arranged in each of the 3 bearing mounting holes of the gear case 21. , the vertical shaft 25 passes through the gearbox 21 up and down and is fixedly connected with the inner rings of the two bearings 24 fixedly installed on the upper and lower plates of the gearbox 21 with an interference fit, so that the vertical shaft 25 can rely on the two bearings 24 rotates; the first bevel gear 22 is fixedly connected with the vertical shaft 25; the right part of the horizontal shaft 26 is fixedly connected with the inner ring of the bearing 24 fixedly installed on the left plate of the gearbox 21 with interference fit, so that the horizontal shaft 26 can rely on The bearing 24 rotates; the right end of the horizontal rotating shaft 26 is in transmission connection with the second bevel gear 23; the second bevel gear 23 is in transmission connection with the first bevel gear 22; 14 have the same structure, the third connecting piece 27 is fixedly provided at the upper and lower ends of the vertical shaft 25 and the left end of the horizontal shaft 26, and the grounding wire connection fixing piece 28 is fixedly installed on the outer side of the gearbox 21, and the grounding wire is connected and fixed The piece 28 is used to transfer and fix the ground wire 4 . In this embodiment, the ground wire connection fixing piece 28 is composed of a bolt fixed on the gear box 21 and a matching nut. The reversing transmission device 2 is fixedly connected with the first connecting piece 13 fixedly arranged on the upper end of the extension rod 12 of the insulating operating rod 1 by the third connecting piece 27 fixedly arranged at the lower end of the vertical rotating shaft 25 .

Still referring to Fig. 1 and Fig. 2, the articulated locking assembly 3 includes a transmission rod 31, a fourth connecting piece 32, a threaded driving rod 33, a mounting plate 34, a locking tongue 35, a articulated elbow 36 and a ground wire fixing piece 37 composition.

The structure of the fourth connecting piece 32 is the same as that of the first connecting piece 13 of the aforesaid insulating operating rod 1. The fourth connecting piece 32 is fixed on one end of the transmission rod 31, and the threaded driving rod 33 is fixed on the other end of the transmission rod 31. At one end, the mounting plate 34 is a plate body part provided with a screw hole in the middle, and the threaded drive rod 33 matches the screw hole of the mounting plate 34, and the locking tongue 35 is a block with a notch on the upper end surface, and the threaded drive rod 33 The upper end protrudes upwards from the upper end of the mounting plate 34 and is fixedly connected with the locking tongue 35. The articulated elbow 36 is fixed on one side of the mounting plate 34. During use, the articulated elbow 36 is articulated with the electrical equipment wire of the substation. , under the drive of the threaded drive rod 33 by the locking tongue 35, the wires of the electrical equipment in the substation are locked; the grounding wire fixing part 37 is fixed on the lower part of the articulated elbow 36, and the grounding wire fixing part 37 is used for the grounding wire 4 For transfer and fixation, in this embodiment, the ground wire fixing member 37 is composed of bolts fixed on the hooking elbow 36 and matching nuts. Ground wire fixing part 37. During use, when the wires of the substation electrical equipment are set horizontally, the hooking locking assembly 3 is fixedly connected to the third connecting piece 27 fixedly arranged on the vertical rotating shaft 25 of the reversing transmission device 2 by its fourth connecting piece 32 , Its structure is shown in Figure 1; when the wires of the electrical equipment in the substation are vertically arranged, the hooking and locking assembly 3 is connected by its fourth connecting piece 32 and the third connecting piece fixed on the transverse rotating shaft 26 of the reversing transmission device 2 27 is fixedly connected, and its structure is shown in Figure 2; during use, only plugging and screwing of the nuts are required to convert the connection, and the conversion operation is very convenient.

The grounding wire 4 is composed of upper and lower sections. The upper end of the upper grounding wire 4 is fixedly connected and electrically connected with the articulated elbow 36 through the grounding wire fixture 37 of the articulated locking assembly 3; the lower end of the upper grounding wire 4 and the lower grounding wire The upper end of 4 is fixedly connected and electrically connected through the ground wire connection fixture 28 of the reversing transmission device 2 . The ground end of the lower ground wire 4 is equipped with a wire clip 41 or a special ground lock for five defenses (not shown in the figure).

The wire grounding device for maintenance of substation electrical equipment in this embodiment, when in use, if the wires of the substation electrical equipment that need to be grounded are horizontally arranged wires, the device is assembled into the structure shown in Figure 1. If the wires of the electrical equipment are vertical wires, the device is assembled into the structure shown in Figure 2, and then the hooking elbow 36 of the hooking locking assembly 3 is connected to the equipment wires by lifting and operating the insulating operating rod 1. Hitch, then rotate the insulation operating lever 1 clockwise, through the transmission of the reversing transmission device 2, drive the locking tongue 35 of the hook locking assembly 3 to move to the elbow 36 of the hook to clamp the equipment wire, and then connect the ground wire 4 Just use the clamp 41 at the lower end or the special grounding lock for five defenses to ground.

The above embodiments are descriptions of specific implementations of the present utility model, rather than limitations of the present utility model. Those skilled in the art can also make various transformations and changes without departing from the spirit and scope of the present utility model. Changes to obtain corresponding equivalent technical solutions, so all equivalent technical solutions should be included in the patent protection scope of the present utility model.

Claims (5)

1. A wire grounding device for maintenance of electrical equipment in substations, comprising an insulating operating lever for hand-held operation, an articulated locking assembly for articulated with electrical equipment wires during use, and an electrical connection with the articulated locking assembly. The connected ground wire is characterized in that it also includes a reversing transmission device, and the reversing transmission device includes a gearbox, a first bevel gear, a second bevel gear, a bearing, a vertical shaft, a horizontal shaft and a third connecting piece; The gear box is a hollow square box body surrounded by front, rear, upper, lower, left and right plates. The upper plate, the lower plate and the left plate of the gear box are respectively provided with a total of 3 There are three bearing installation holes; the first bevel gear and the second bevel gear are arranged in the gearbox; there are three bearings, one of which is fixed in each of the three bearing installation holes of the gearbox; It passes through the gearbox and is fixedly connected with the interference fit of the inner rings of the two bearings fixedly installed on the upper and lower plates of the gearbox; the first bevel gear is fixedly connected with the vertical shaft; the right part of the horizontal shaft is fixedly installed on the The inner ring of the bearing on the left plate of the gearbox is fixedly connected by interference fit; the right end of the horizontal shaft is connected to the second bevel gear; the second bevel gear is connected to the first bevel gear; the third connecting piece is above and below the vertical shaft One is fixed at both ends and the left end of the horizontal rotating shaft; the reversing transmission device is fixedly connected with the insulating operating rod by the third connecting piece fixed on the lower end of the vertical rotating shaft; the reversing transmission device is fixed on the vertical rotating shaft The third connecting piece at the upper end or the third connecting piece fixed on the left end of the horizontal rotating shaft is in transmission connection with the hook locking assembly. 2. The wire grounding device for maintenance of substation electrical equipment according to claim 1, characterized in that: the insulating operating rod includes a base rod, an extension rod, a first connecting piece and a second connecting piece; the first connecting piece includes Pin sleeve, socket sleeve, connecting pin and lock nut. The socket sleeve is arranged above the pin sleeve and is integrated or fixedly connected with the pin sleeve. The hexagonal socket hole, the lock nut and the screw thread on the outer peripheral wall of the socket sleeve are arranged on the socket sleeve, the first connecting piece is socketed with the base rod and the upper end of the extension rod by the pin sleeve The upper end of the rod and the extension rod is pinned; the second connecting piece is composed of a screw rod and a hexagonal plug-in post. The hexagonal plug-in post is set under the screw rod and is integrally or fixedly connected with the screw rod. The second connecting piece is fixed at the lower end of the extension rod. The extension bar is inserted by the hexagon socket of the second connecting piece fixed at its lower end and the inner hexagon socket of the socket sleeve of the first connecting piece fixed at the upper end of the base rod. The lock nut of the connecting piece is threadedly connected with the threaded rod of the second connecting piece; The structure of the third connecting piece of the reversing transmission device is the same as that of the second connecting piece of the insulating operating rod. The first connecting piece at the upper end of the extension rod matches and is fixedly connected. 3. The wire grounding device for maintenance of substation electrical equipment according to claim 2, characterized in that: the hitch locking assembly includes a transmission rod, a fourth connector, a threaded drive rod, a mounting plate, a locking tongue, a hitch Elbows and grounding wire fixtures; The structure of the fourth connector is the same as that of the first connector of the insulating operating rod. The fourth connector is fixed on one end of the transmission rod, and the threaded drive rod is fixed on the other end of the transmission rod; There is a plate body with a screw hole, the locking tongue is a block with a notch on the upper end surface, the threaded driving rod matches the screw hole of the mounting plate, and the upper end of the threaded driving rod protrudes upwards from the upper end of the mounting plate and connects with the mounting plate. The locking tongue is fixedly connected, and the hooking elbow is fixed on one side of the mounting plate. When in use, the hooking elbow is hooked with the electrical equipment wires of the substation, and the locking tongue is driven by the threaded drive rod to connect the wires of the electrical equipment of the substation. Locking; the grounding wire fixture is fixed on the lower part of the articulated elbow and is electrically connected to the articulated elbow; the upper end of the grounding wire is fixedly connected and electrically connected to the articulated elbow through the grounding wire fixture; when in use , when the wires of the electrical equipment in the substation are set horizontally, the articulated locking assembly is fixedly connected by its fourth connecting piece to the third connecting piece fixed on the vertical shaft of the reversing drive; when the wires of the electrical equipment in the substation are set vertically The hooking and locking assembly is fixedly connected by its fourth connecting piece to the third connecting piece fixed on the transverse rotating shaft of the reversing transmission device. 4. The wire grounding device for substation electrical equipment maintenance according to claim 3, characterized in that: the gear box of the reversing transmission device is provided with a grounding wire connecting fixture; the grounding wire is composed of upper and lower sections, the upper section The upper end of the grounding wire is fixedly connected and electrically connected with the hooking elbow through the grounding wire fixing part of the articulated locking assembly; the lower end of the upper grounding wire and the upper end of the lower grounding wire are fixedly connected through the grounding wire connection fixing part of the reversing transmission device and electrically connected. 5. The grounding device for maintenance wires of substation electrical equipment according to claim 4, characterized in that: the grounding end of the lower grounding wire is equipped with a wire clip or a special grounding lock for five protections.