CN115911906A - A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines - Google Patents

Abstract

The invention discloses a combined type telescopic grounding rod for realizing reliable grounding of a high-voltage transmission line, which solves the problem of how to realize reliable grounding wire hanging and belongs to the field of power transmission; the ground wire hanging rod is designed into a split combined structure, an operator carries three hooks and an insulating rod to ascend a tower, the insulating rod and the metal hook are combined on the tower, ground wire hanging is carried out, and after ground wire hanging of a phase of line is completed, the metal hook hung on the line is separated from the insulating rod; then combining a second metal hook with the insulating rod to carry out grounding hanging work of a second phase line; the grounding hook and the insulating rod are connected and designed to be of a magnetic type, the magnet blocks are arranged at the bottom end and the top end of the metal hook respectively, the insulating rod can be combined with the metal hook at the lower end of the hook, and the top end of the hook can also be combined with the metal hook, so that the problem of operation of forward hooking the metal hook on the power transmission line by operators is solved when the operators are above or below the power transmission line.

Description

A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines

technical field

The invention relates to a high-voltage line grounding mechanism used before the maintenance of a high-voltage transmission line, in particular to a grounding rod for a high-voltage transmission line that is easy to carry when climbing a height and can realize reliable grounding and a connecting method thereof.

Background technique

Before operating and maintaining the high-voltage transmission line, the operation and maintenance personnel must pre-attach a grounding wire to each phase of the three-phase transmission line on the side of the transmission tower close to the substation to electrically connect the three-phase transmission line to the iron tower Together, the grounding short circuit of the transmission line is realized to ensure the safety of operation and maintenance personnel operating on the tower; A metal grounding hook is connected with a grounding copper wire. The weight of the whole grounding rod is about ten kilograms, and the length is about several meters. The metal grounding hook is U-shaped, and there is an elastic clip in the U-shaped mouth After the U-shaped hook is hooked on the wire, the wire and the hook body are fixed and connected as a whole through the clip spring; the on-site operation steps are as follows: First, the operator carries a long rod-shaped grounding rod and climbs to a certain part of the iron tower. The one-phase power transmission line is at the corresponding grounding point on the iron tower. Then, connect the lower end of the grounding copper wire connected to the grounding hook on the insulating rod to the corresponding grounding point on the iron strap. Finally, hold the insulating rod and place the insulation The grounding hook at the end of the rod is close to the phase transmission line, and the U-shaped hook body is hooked on the transmission line, thereby completing the grounding and shorting work of the phase transmission line; since the transmission line on the iron tower is a three-phase AC, the hook After hooking up the phase line, the line personnel need to go up and down from the tower to the ground, and then carry the second insulating rod to climb the tower. It is necessary to repeat the tower three times to complete the hooking work of the ground wire of the three-phase transmission line; how to reduce the The labor intensity of the grounding wire hooking work and improving the efficiency of the on-site hooking work are a problem that needs to be solved on the site; in addition, due to the different tower types of the transmission towers, the grounding points of the corresponding lines on some towers are located in the connected transmission line. The corresponding grounding point on some iron towers is above the connected transmission line; when the connected line is above the line, the operator on the tower lifts the insulating rod upwards and puts the metal on the top of the insulating rod The hook is hung on the line in the forward direction, that is, the opening of the U-shaped metal hook is downward, and it is hung on the line. When the operating point is below, the operator can only connect the U-shaped opening of the grounding hook upwards to the power transmission line in reverse. The reverse hooking method also easily causes unreliable electrical connection between the grounding hook and the transmission wire, and even the phenomenon that the hook falls off, resulting in the failure of the grounding of the transmission line, which seriously threatens the life safety of the on-site operators.

Contents of the invention

The invention provides a combined telescopic ground rod for realizing reliable grounding of high-voltage transmission lines, and solves the technical problems of how to realize reliable connection of ground wires and how to reduce the labor intensity of connection of ground wires.

The present invention solves the above technical problems through the following technical solutions:

The general idea of the present invention: design the ground wire hooking rod as a split combination structure, that is, separate the metal hook and the insulating rod into two pieces, and only one operator is needed on site to carry three hooks and one insulating rod to climb the tower After the insulating rod and the metal hook are combined together on the tower, the grounding wire is connected. After the ground wire connection of the one-phase transmission line is completed, the metal hook connected to the line is separated from the insulating rod; Two metal hooks and insulating rods are combined to carry out the ground connection work of the second-phase transmission line, that is, after one person climbs the tower at one time, the connection work of all the ground wires of the three-phase line can be completed; and the ground connection The connection between the hook and the insulating rod is designed as a magnetic suction type, which is convenient for the operator to assemble and disassemble the hook and the insulating rod at the height of the iron tower; set magnet blocks at the bottom and top of the metal hook respectively, so that the insulating rod can be placed on the hook The lower end of the hook can be combined with the metal hook, and it can also be combined with the metal hook at the top of the hook, thus solving the problem that whether the operator is above or below the transmission line, the metal hook can be positively connected to the transmission line. Operational problems on the line.

A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook, a retractable epoxy resin insulated operating rod and a grounding copper wire, and a figure-eight elastic clip is arranged in the U-shaped hook body of the metal grounding hook The tongue, between the top of the eight-shaped elastic tongue and the U-shaped hook body, is provided with a transmission line clamping groove, and on the outer surface of the top end of the U-shaped hook body, a permanent magnetic suction block at the top of the hook is fixedly arranged. On the right side of the top surface of the permanent magnetic suction block at the top of the hook, there is a fixed upper horizontal ring release, and at the lower right end of the U-shaped hook body, there is a permanent magnetic suction block at the bottom end of the hook, and a permanent magnetic suction block at the bottom end of the hook. On the right side of the lower bottom surface of the magnetic suction block, there is a fixed lower end horizontal ring tripping; on the top surface of the epoxy resin insulating operating rod, there is a permanent magnet magnetic suction block at the upper end of the insulating rod, and a permanent magnetic magnetic suction block at the upper end of the insulating rod. The right side of the top surface of the suction block is fixed with a connecting column; the upper end of the epoxy resin insulated operating rod is absorbed by the permanent magnetic suction block at the upper end of the insulating rod and the permanent magnetic suction block at the bottom of the hook, and is connected with the U-shaped hook body. The lower right ends of the two are connected together, and the connecting column is plugged into the horizontal ring release at the lower end.

On the outer surface of the lower right end of the U-shaped hook body, a grounding copper wire connecting bolt is arranged, and a grounding copper wire is connected to the grounding copper wire connecting bolt.

Between the eight-shaped elastic tab and the inner side of the U-shaped hook, there is an elastic support bar for the tab.

In the middle of the epoxy resin insulated operating rod, a telescopic joint is arranged; in the lower end of the epoxy resin insulated operating rod, an insulating handle sheath is arranged.

A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook, a retractable epoxy resin insulated operating rod and a grounding copper wire, and a figure-eight elastic clip is arranged in the U-shaped hook body of the metal grounding hook The tongue, between the top of the eight-shaped elastic tongue and the U-shaped hook body, is provided with a transmission line clamping groove, and on the outer surface of the top end of the U-shaped hook body, a permanent magnetic suction block at the top of the hook is fixedly arranged. On the right side of the top surface of the permanent magnetic suction block at the top of the hook, there is a fixed upper horizontal ring release, and at the lower right end of the U-shaped hook body, there is a permanent magnetic suction block at the bottom end of the hook, and a permanent magnetic suction block at the bottom end of the hook. On the right side of the lower bottom surface of the magnetic suction block, there is a fixed lower end horizontal ring tripping; on the top surface of the epoxy resin insulating operating rod, there is a permanent magnet magnetic suction block at the upper end of the insulating rod, and a permanent magnetic magnetic suction block at the upper end of the insulating rod. The right side of the top surface of the suction block is fixed with a connecting column; the upper end of the epoxy resin insulated operating rod is absorbed by the permanent magnet magnetic suction block at the upper end of the insulating rod and the permanent magnetic magnetic suction block at the top of the hook, and is connected to the top of the U-shaped hook body. connected together, and the connecting column is plugged into the upper horizontal ring release.

A method for connecting a combined grounding rod for reliable grounding of a high-voltage transmission line, comprising a metal grounding hook, a retractable epoxy resin insulated operating rod, a grounding copper wire, a power transmission tower, a substation, and an operating point on the grounding tower; Between the transmission tower and the substation, the upper transmission line and the lower transmission line are respectively connected. The upper transmission line is set above the operating point on the grounding tower, and the lower transmission line is set below the operating point on the grounding tower; The U-shaped hook body of the metal grounding hook is provided with a figure-eight elastic tab, between the top of the figure-eight elastic tab and the U-shaped hook body, a transmission line clamping groove is arranged, and outside the top of the U-shaped hook body On the side, a permanent magnetic suction block at the top of the hook is fixedly installed. On the right side of the top surface of the permanent magnetic magnetic suction block at the top of the hook, there is a fixed upper horizontal ring release. At the lower right end of the U-shaped hook body, a fixed The permanent magnetic suction block at the bottom of the hook is fixed with a lower horizontal ring trip on the right side of the bottom surface of the permanent magnetic suction block at the bottom of the hook; on the top surface of the epoxy resin insulated operating rod, there is a fixed insulation The permanent magnetic suction block at the upper end of the rod is fixed with a connecting column on the right side of the top surface of the permanent magnetic suction block at the upper end of the insulating rod; it is characterized by the following steps:

The first step is to combine the first metal grounding hook with the epoxy resin insulating operating rod at the operating point on the hanging grounding tower, that is, the upper end of the insulating rod at the upper end of the epoxy resin insulating operating rod is permanently magnetized The suction block is adsorbed together with the permanent magnetic suction block at the bottom of the hook on the first metal grounding hook to obtain a combined grounding rod connected by the combined grounding wire;

The second step is to hook the U-shaped hook body to the upper transmission line by lifting the combined grounding rod upward, and make the upper transmission line clamped in the transmission line clamping groove;

The third step is to rotate the epoxy resin insulated operating rod. The connecting column on the epoxy resin insulated operating rod is used as the fulcrum for the horizontal ring release at the lower end to overcome the permanent magnetic suction block at the bottom of the hook and the permanent magnetic suction block at the upper end of the insulating rod. The magnetic attraction force between them makes the epoxy resin insulated operating rod disengage from the first metal grounding hook, and completes the hooking operation of the grounding wire of the upper transmission line;

Step 4: Take back the epoxy resin insulating operating rod, and combine the second metal grounding hook with the epoxy resin insulating operating rod at the operating point on the grounding tower, that is, put the epoxy resin insulating operating rod The upper end of the insulating rod upper permanent magnetic suction block is adsorbed together with the permanent magnetic magnetic suction block on the top of the hook on the second metal grounding hook, and a combination of reversely connecting the metal grounding hook to the top of the epoxy resin insulating operating rod is obtained. Ground rod;

The fourth step is to stretch out the newly assembled combined grounding rod downwards, crimp the U-shaped hook body on the second metal grounding hook to the lower transmission line, and make the lower transmission line clamped on the transmission line. In the line clamping groove, the second metal grounding hook is realized, which is positively connected to the lower transmission line in the form of a U-shaped mouth downward;

Step 5: Rotate the epoxy resin insulated operating rod. The connecting column on the epoxy resin insulated operating rod takes the horizontal ring release at the upper end as the fulcrum to overcome the gap between the permanent magnetic suction block at the top of the hook and the permanent magnetic suction block at the upper end of the insulating rod. The magnetic attraction force between them makes the rotating epoxy resin insulated operating rod disengage from the second metal grounding hook, thereby completing the hooking operation of the grounding wire of the transmission line below.

On the outer surface of the lower right end of the U-shaped hook body, there is a grounding copper wire connecting bolt. The upper end of the grounding copper wire is connected to the grounding copper wire connecting bolt. The lower end of the grounding copper wire connected to the metal grounding hook is connected to the grounding point on the transmission tower.

The present invention adopts the split design of the epoxy resin insulated operating rod and the metal grounding hook, which reduces the number of grounding rods carried by the operators who climb the tower, saving time and effort; When the power transmission line is above or below the operating point, the operating rod and the metal grounding hook are connected together in a positive or reverse combination, so that the U-shaped mouth of the metal grounding hook is always downward, and the positive grounding is reliable. The purpose of hooking on the power transmission line is to realize the reliable grounding of the grounding wire, reduce the time of high-altitude operations, greatly improve work efficiency, and ensure the safety of high-altitude workers.

Description of drawings

Fig. 1 is the structure diagram when the epoxy resin insulated operating rod 2 of the present invention is combined with the metal grounding hook 1 in forward combination;

Fig. 2 is a schematic structural view of the metal grounding hook 1 of the present invention;

Fig. 3 is the structural representation of the epoxy resin insulating operating rod 2 of the present invention;

Fig. 4 is a structural schematic view of the epoxy resin insulated operating rod 2 of the present invention when it rotates away from the metal grounding hook 1;

Fig. 5 is a schematic structural view of the epoxy resin insulated operating rod 2 of the present invention and the metal grounding hook 1 when they are combined and connected in reverse;

Fig. 6 is a schematic diagram of the work when the ground wire is hooked up at the operating point 8 on the ground wire tower;

Fig. 7 is a schematic diagram of work when the ground wire is connected downward at the operating point 8 on the ground wire tower.

Detailed ways

The present invention is described in detail below in conjunction with accompanying drawing:

A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook 1, a telescopic epoxy resin insulated operating rod 2 and a grounding copper wire 3, inside the U-shaped hook body 101 of the metal grounding hook 1, A figure-eight elastic tab 102 is provided, and between the top of the figure-eight elastic tab 102 and the U-shaped hook body 101, a power transmission line clamping groove 109 is arranged, and on the outer surface of the top end of the U-shaped hook body 101, a fixed A hook top permanent magnet magnetic suction block 108 is provided, on the right side of the top surface of the hook top permanent magnetic magnetic suction block 108, an upper horizontal circular ring release 104 is fixedly arranged, and at the lower right end of the U-shaped hook body 101, a The permanent magnetic suction block 103 at the bottom end of the hook is fixedly provided with a lower horizontal circular ring release 107 on the right side of the lower bottom surface of the permanent magnetic magnetic suction block 103 at the bottom end of the hook; The permanent magnetic suction block 201 at the upper end of the insulating rod is fixedly arranged, and on the right side of the top surface of the permanent magnetic magnetic suction block 201 at the upper end of the insulating rod, a connecting column 203 is fixedly arranged; The adsorption of the permanent magnetic suction block 201 at the upper end and the permanent magnetic magnetic suction block 103 at the bottom of the hook is connected with the lower right end of the U-shaped hook body 101, and the connecting column 203 is plugged into the lower horizontal ring release 107 ; Since the epoxy resin insulating operating rod 2 and the metal grounding hook 1 are designed to be separated, the on-site operator can put three metal grounding hooks into one bag, and only needs to carry one epoxy resin insulating operating rod 2 to board. Go up the iron tower and complete the grounding work of the three-phase transmission line. After the operator boards the iron tower, they will respectively combine the three metal grounding hooks carried with the epoxy resin insulated operating rod 2 to carry out the three-phase transmission line respectively. The ground hook works.

On the outer surface of the lower right end of the U-shaped hook body 101, a grounding copper wire connection bolt 106 is provided, and on the grounding copper wire connection bolt 106, a grounding copper wire 3 is connected; when the U-shaped hook body 101 is hooked to the transmission line After being connected, the transmission line is clamped in the transmission line clamping groove 109, realizing the electrical connection between the transmission line and the metal grounding hook 1, and the metal grounding hook 1 is connected to the grounding copper wire 3 connected to the bolt 106 through the grounding copper wire , It is electrically connected with the iron tower to realize the connection between the transmission line and the earth, so as to realize the grounding of the transmission line.

Between the eight-shaped elastic tab 102 and the inner surface of the U-shaped hook body 101, there is a tab elastic support rod 105, so that the eight-shaped elastic tab 102 can reliably secure the transmission line entering the transmission line clamping groove 109. Connection also plays a role in preventing the metal grounding hook 1 from breaking away from the transmission line.

In the middle of the epoxy resin insulating operating rod 2, a telescopic joint 202 is arranged, and the epoxy resin insulating operating rod 2 passes through the telescopic joint 202 to realize elongation or shortening; at the lower end of the epoxy resin insulating operating rod 2, an insulating The handle sheath 204 is convenient for the operator to hold and operate.

A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook 1, a telescopic epoxy resin insulated operating rod 2 and a grounding copper wire 3, inside the U-shaped hook body 101 of the metal grounding hook 1, A figure-eight elastic tab 102 is provided, and between the top of the figure-eight elastic tab 102 and the U-shaped hook body 101, a power transmission line clamping groove 109 is arranged, and on the outer surface of the top end of the U-shaped hook body 101, a fixed A hook top permanent magnet magnetic suction block 108 is provided, on the right side of the top surface of the hook top permanent magnetic magnetic suction block 108, an upper horizontal circular ring release 104 is fixedly arranged, and at the lower right end of the U-shaped hook body 101, a The permanent magnetic suction block 103 at the bottom end of the hook is fixedly provided with a lower horizontal circular ring release 107 on the right side of the lower bottom surface of the permanent magnetic magnetic suction block 103 at the bottom end of the hook; The permanent magnetic suction block 201 at the upper end of the insulating rod is fixedly arranged, and on the right side of the top surface of the permanent magnetic magnetic suction block 201 at the upper end of the insulating rod, a connecting column 203 is fixedly arranged; The adsorption of the upper permanent magnet magnetic suction block 201 and the permanent magnetic magnetic suction block 108 at the top of the hook is connected with the top of the U-shaped hook body 101, and the connecting column 203 is plugged into the upper horizontal ring trip 104; When the connection line is below the operation point 8 on the grounding tower, the metal grounding hook 1 and the epoxy resin insulated operating rod 2 are connected in reverse to ensure that the operating rod can be extended smoothly. Ground the U-shaped opening of the metal grounding hook 1 downwards, and forwardly hang it on the power transmission line. At this time, the metal grounding hook 1 can also ensure that it is reliably electrically connected with the power transmission line only by its own weight.

A method for connecting a combined grounding rod for reliable grounding of a high-voltage transmission line, comprising a metal grounding hook 1, a retractable epoxy resin insulated operating rod 2, a grounding copper wire 3, a transmission tower 4, a substation 5 and a grounding wire The operation point 8 on the tower; between the transmission tower 4 and the substation 5, the upper transmission line 6 and the lower transmission line 7 are connected respectively, the upper transmission line 6 is set above the operation point 8 on the tower with the grounding line, and the lower transmission line 7 Set below the operating point 8 on the grounding tower; in the U-shaped hook body 101 of the metal grounding hook 1, a figure-eight elastic tab 102 is arranged, and the top of the figure-eight elastic tab 102 is connected to the U-shaped hook body 101 Between, be provided with transmission line clamping groove 109, on the top outer surface of U-shaped hook body 101, be fixedly provided with hook top permanent magnet magnetic suction piece 108, on the top surface of hook top permanent magnet magnetic suction piece 108 right On the side, the upper horizontal circular ring release 104 is fixedly arranged, and at the lower right end of the U-shaped hook body 101, a permanent magnetic suction block 103 at the bottom end of the hook is fixedly arranged, and a permanent magnetic suction block 103 at the bottom end of the hook is fixedly arranged on the lower bottom surface of the permanent magnetic suction block 103 at the bottom right side, fixedly provided with a lower end horizontal ring trip 107; on the top surface of the epoxy resin insulating operating rod 2, a permanent magnetic suction block 201 at the upper end of the insulating rod is fixedly provided, and a permanent magnetic magnetic suction block 201 at the upper end of the insulating rod On the right side of the top surface, a connecting column 203 is fixedly arranged; it is characterized by the following steps:

The first step is to combine the first metal grounding hook 1 with the epoxy resin insulating operating rod 2 at the operating point 8 on the hanging grounding tower, that is, the insulating rod at the upper end of the epoxy resin insulating operating rod 2 The upper end permanent magnet magnetic suction block 201 is adsorbed together with the hook bottom permanent magnetic magnetic suction block 103 on the first metal grounding hook 1, so as to obtain a combined ground rod connected by the combined ground wire;

The second step is to hook the U-shaped hook body 101 on the upper transmission line 6 by lifting the combined grounding rod upward, and make the upper transmission line 6 snap into the transmission line snap-in groove 109;

The third step is to rotate the epoxy resin insulated operating rod 2, and the connecting column 203 on the epoxy resin insulated operating rod 2 is the fulcrum of the horizontal ring trip 107 at the lower end to overcome the permanent magnetic suction block 103 at the bottom of the hook and the upper end of the insulating rod. The magnetic attraction force between the permanent magnet magnetic suction blocks 201 makes the epoxy resin insulating operating rod 2 disengage from the first metal grounding hook 1, and completes the hooking operation of the grounding wire of the upper power transmission line 6;

The fourth step is to retract the epoxy resin insulating operating rod 2, and combine the second metal grounding hook with the epoxy resin insulating operating rod 2 at the operating point 8 on the grounding tower, that is, put the epoxy resin The upper end permanent magnetic magnetic suction block 201 of the insulating rod upper end of the insulating operating rod 2 is adsorbed together with the permanent magnetic magnetic suction block 108 on the top of the hook on the second metal grounding hook, so that the metal grounding hook 1 is reversely connected to the epoxy resin. The combined grounding rod at the top of the insulating operating rod 2;

The fourth step is to stretch out the newly assembled combined grounding rod downwards, crimp the U-shaped hook body 101 on the second metal grounding hook to the lower power transmission line 7, and make the lower power transmission line 7 snap Connected in the transmission line clamping groove 109, the second metal grounding hook is realized, in the form of a U-shaped mouth downward, and the positive connection on the transmission line 7 below;

The fifth step, rotate the epoxy resin insulating operating rod 2, the connecting column 203 on the epoxy resin insulating operating rod 2 is the fulcrum of the upper end horizontal ring release 104, overcome the permanent magnetic suction block 108 at the top of the hook and the permanent magnet at the upper end of the insulating rod. The magnetic attraction force between the magnetic suction blocks 201 makes the rotating epoxy resin insulated operating rod 2 disengage from the second metal grounding hook, thereby completing the hooking operation of the grounding wire of the power transmission line 7 below.

On the outer surface of the lower right end of the U-shaped hook body 101, a grounding copper wire connection bolt 106 is provided, and the upper end of the grounding copper wire 3 is connected to the grounding copper wire connection bolt 106, and the metal grounding hook 1 is hooked on the power transmission line. Before, the lower end of the grounding copper wire 3 connected with the metal grounding hook 1 must be connected to the grounding point on the transmission tower 4.

Claims (5)

1. A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook (1), a retractable epoxy resin insulated operating rod (2) and a grounding copper wire (3), on the metal grounding hook ( 1) Inside the U-shaped hook body (101), there is a figure-eight elastic tab (102), and between the top of the figure-eight elastic tab (102) and the U-shaped hook body (101), there is a power transmission line card The connection groove (109) is characterized in that, on the outer surface of the top of the U-shaped hook body (101), a permanent magnetic suction block (108) at the top of the hook is fixedly arranged, and a permanent magnetic suction block (108) at the top of the hook On the right side of the top surface of the upper end, there is a fixed upper horizontal ring release (104), and at the lower right end of the U-shaped hook body (101), there is a permanent magnetic suction block (103) at the bottom of the hook, which is fixed at the bottom of the hook. On the right side of the lower bottom surface of the permanent magnet magnetic suction block (103), a lower end horizontal ring release (107) is fixedly installed; on the top surface of the epoxy resin insulating operating rod (2), a permanent magnet at the upper end of the insulating rod is fixedly installed. The magnetic suction block (201), on the right side of the top surface of the permanent magnet magnetic suction block (201) at the upper end of the insulating rod, is fixedly provided with a connecting column (203); the upper end of the epoxy resin insulating operation rod (2) is connected through the insulating rod The adsorption of the permanent magnetic suction block (201) at the upper end and the permanent magnetic suction block (103) at the bottom of the hook is connected with the lower right end of the U-shaped hook body (101), and the connecting column (203) is inserted into the In the horizontal ring trip (107) at the lower end. 2. A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines according to claim 1, characterized in that, on the outer surface of the lower right end of the U-shaped hook body (101), a grounding copper wire connection bolt is arranged (106), on the grounding copper wire connecting bolt (106), is connected with the grounding copper wire (3). 3. A combined telescopic ground rod for reliable grounding of high-voltage transmission lines according to claim 1 or 2, characterized in that, between the eight-shaped elastic tab (102) and the inner surface of the U-shaped hook body (101) Between, there is a tab elastic support rod (105). 4. A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines according to claim 1 or 2, characterized in that a telescopic joint (202) is provided in the middle of the epoxy resin insulated operating rod (2) ; An insulating handle sheath (204) is provided at the lower end of the epoxy resin insulating operating rod (2). 5. A combined telescopic grounding rod for reliable grounding of high-voltage transmission lines, including a metal grounding hook (1), a retractable epoxy resin insulated operating rod (2) and a grounding copper wire (3), on the metal grounding hook ( 1) Inside the U-shaped hook body (101), there is a figure-eight elastic tab (102), and between the top of the figure-eight elastic tab (102) and the U-shaped hook body (101), there is a power transmission line card The connection groove (109) is characterized in that, on the outer surface of the top of the U-shaped hook body (101), a permanent magnetic suction block (108) at the top of the hook is fixedly arranged, and a permanent magnetic suction block (108) at the top of the hook On the right side of the top surface of the upper end, there is a fixed upper horizontal circular ring release (104); on the top surface of the epoxy resin insulating operating rod (2), there is a permanent magnetic suction block (201) at the upper end of the insulating rod fixedly installed. On the right side of the top surface of the permanent magnetic suction block (201) at the upper end of the insulating rod, a connecting column (203) is fixedly arranged; the upper end of the epoxy resin insulating operation rod (2) is connected through the permanent magnetic suction block (201) at the upper end of the insulating rod. ) and the permanent magnetic suction block (108) at the top of the hook are connected together with the top of the U-shaped hook body (101), and the connecting column (203) is plugged into the upper horizontal ring release (104).

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