Corner branch rod ground potential external damage prevention device and method thereof

Abstract

The invention discloses a corner branch rod ground potential external damage prevention device and method, and the device comprises a low-voltage end external damage prevention insulation device which is disposed at a low-voltage discharge ring / ball at one side of a lightning protection strain insulator, and is used for covering the low-voltage discharge ring / ball to form an insulation barrier; the high-voltage end external damage prevention insulation device is arranged at the high-voltage discharge ring / ball on the other side of the lightning protection strain insulator and is used for wrapping the high-voltage discharge ring / ball to form insulation barrier; and the double-cross-arm insulation shielding device is arranged on the iron cross arm and is used for covering the metal exposed points of the iron cross arm to form insulation barrier and indirectly protecting the connection part of the AMP wire clamp. The insulation protection level of the position of the corner branch rod is integrally improved, so that the problem of line tripping caused by ground short circuit discharge due to animal body touch, bird nest branch lap joint and the like is solved, and the power supply reliability of a distribution network is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-external damage of overhead distribution line systems, and in particular to a ground potential anti-external damage device and method for corner branch poles. Background Art

[0002] At present, there are many metal exposed points on the existing corner branch poles, which exist at the high- and low-voltage discharge rings and the connection joints of Amp clamps of lightning protection strain insulators. The nesting or foraging behaviors of birds, snakes, rats, etc. on the iron crossbars of the overhead distribution line system often affect the insulation level at the connection joints of the iron crossbars. Seriously, it will also threaten the safe operation of the power of the distribution line system.

[0003] Specifically, in the overhead distribution line system, two lines at the corner branch are connected by Amp clamps, and the outside of the connection joint is wrapped with insulating tape or equipped with an Amp clamp insulating sheath; moreover, lightning protection strain insulators are mostly applied at positions such as corner branch poles and sectional crossing poles. However, the construction of a bird's nest will directly wrap the Amp clamp together with the outer insulating sheath. In addition, the bodies of birds, snakes, rats, etc. may also be placed on the strain insulator. These factors are likely to short-circuit the high- and low-voltage discharge rings on both sides of the lightning protection strain insulator, resulting in power failures.

[0004] Based on this, a ground potential anti-external damage device and method for corner branch poles are proposed to address the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a ground potential anti-external damage device and method for corner branch poles, which can improve the insulation protection level at the position of the corner branch pole as a whole, so as to reduce the problem of line tripping caused by ground short-circuit discharge triggered by animal body contact, bird nest branch lapping, etc., and further improve the power supply reliability of the distribution network.

[0006] To achieve the above object, the present invention provides a ground potential anti-external damage device for corner branch poles, which is used for insulating and blocking the high- and low-voltage discharge rings / spheres of lightning protection strain insulators and the metal exposed points on the iron crossarm, and includes:

[0007] A low-voltage end anti-external damage insulation device, which is arranged at the low-voltage discharge ring / sphere on one side of the lightning protection strain insulator and is used for covering the low-voltage discharge ring / sphere to form an insulation barrier;

[0008] A high-voltage end anti-external damage insulation device, which is arranged at the high-voltage discharge ring / sphere on the other side of the lightning protection strain insulator and is used for covering the high-voltage discharge ring / sphere to form an insulation barrier;

[0009] A double crossarm insulation shielding device, which is arranged on the iron crossarm and is used for covering the metal exposed points on the iron crossarm to form an insulation barrier and indirectly protecting the connection joint of the Amp clamp.

[0010] Optionally, the ground potential anti - external - damage device for the corner branch rod further includes: a live - working insulating rod, including a rod body and a live - working head. The live - working head of the live - working insulating rod is detachably connected to the low - voltage - end anti - external - damage insulating device, the high - voltage - end anti - external - damage insulating device, and the double - cross - arm insulating shielding device respectively, and is installed while energized;

[0011] Wherein, the rod body and the live - working head are made of epoxy glass fiber.

[0012] Optionally, the low - voltage - end anti - external - damage insulating device includes:

[0013] A cross - arm base, which is installed on the iron cross - arm at the position where the corner branch rod is located;

[0014] A vertically inserted baffle, located between the cross - arm base and the low - voltage discharge ring / ball, and one side of the vertically inserted baffle is connected to the cross - arm base for insulating barrier;

[0015] A discharge - ring cover, in an arched structure, connected to the other side of the vertically inserted baffle. The discharge - ring cover covers the low - voltage discharge ring / ball for insulating and blocking animals and other foreign objects that are placed on the low - voltage discharge ring / ball;

[0016] A first installation and operation module, arranged on the side of the vertically inserted baffle close to the discharge - ring cover, and connected to the live - working head during installation to insert and remove the live - working insulating rod.

[0017] Optionally, a strong - magnet module is further provided on the inner side of the cross - arm base close to the iron cross - arm for magnetic absorption and fixation on the iron cross - arm.

[0018] Optionally, the high - voltage - end anti - external - damage insulating device includes:

[0019] An upper shield and a lower shield connected by a rotating shaft, and the relative opening position between the two shields is rotated through the rotating shaft to achieve opening / closing, and then the high - voltage discharge ring / ball is covered after closing;

[0020] A second installation and operation module, arranged on the top of the upper shield, and connected to the live - working head during installation to insert and remove the live - working insulating rod.

[0021] Optionally, an embedded iron block is provided on the outer side of the upper shield close to the rotating - shaft connection; an adsorption module is provided on the inner side of the lower shield close to the rotating - shaft connection; after the upper shield and the lower shield are closed, they are fixedly covered on the high - voltage discharge ring / ball through the strong magnetic attraction between the embedded iron block and the adsorption module.

[0022] Optionally, the double - cross - arm insulating shielding device includes:

[0023] Arc-shaped base;

[0024] A plurality of angle steel hanging buckles are arranged on one side of the arc-shaped base and are used to hang on one side of two oppositely arranged iron cross arms;

[0025] A plurality of strong magnetic installation columns are arranged on the other side of the arc-shaped base and are used to adsorb the other side of the iron cross arm;

[0026] The third installation operation module is arranged in the middle of the side of the arc-shaped base on the same side as the strong magnetic installation column and is connected to the live operation head during installation to insert and remove the live operation insulating rod.

[0027] Optionally, the low-voltage end external breakage prevention insulation device, the high-voltage end external breakage prevention insulation device, and the double cross arm insulation shielding device are all made of hard insulation materials, and anti-weathering additives, anti-ultraviolet aging additives, and flame retardant additives are added during injection molding.

[0028] The present invention also provides a method for preventing external breakage at ground potential of a corner branch pole, which includes the following processes:

[0029] Insert the live operation head of the live operation insulating rod into the first installation operation module of the low-voltage end external breakage prevention insulation device, and through the live operation insulating rod, align the discharge ring cover with the low-voltage discharge ring / sphere and then install it on the iron cross arm close to the low-voltage discharge ring / sphere side, and cover the low-voltage end external breakage prevention insulation device on the low-voltage discharge ring / sphere to form an insulation barrier;

[0030] Insert the live operation head of the live operation insulating rod into the second installation operation module of the high-voltage end external breakage prevention insulation device, and through the live operation insulating rod, move the upper protective cover and the lower protective cover in the open state to the vicinity of the high-voltage discharge ring / sphere, and close the upper protective cover and the lower protective cover to wrap the high-voltage discharge ring / sphere to form an insulation barrier;

[0031] Insert the live operation head of the live operation insulating rod into the third installation operation module of the double cross arm insulation shielding device, and through the live operation insulating rod, install the angle steel hanging buckles and the strong magnetic installation columns on two oppositely arranged iron cross arms, and cover the double cross arm insulation shielding device on the iron cross arm to form an insulation barrier.

[0032] Optionally, the installation of the high-voltage end external breakage prevention insulation device specifically includes the following steps:

[0033] In the state where the upper protective cover and the lower protective cover of the high-voltage end external breakage prevention insulation device are open, insert the live operation head of the live operation insulating rod into the second installation operation module, and then push the upper protective cover to the vicinity of the high-voltage discharge ring / sphere;

[0034] Adjust the insertion angle of the live operation insulating rod relative to the second installation operation module, slide the live operation insulating rod out, and then the open side of the lower shield rotates downward along the rotating shaft to close, thereby covering the high-voltage discharge ring / ball;

[0035] Under the strong magnetic attraction of the embedded iron block and the adsorption module, the upper shield and the lower shield are tightly attracted and cover the high-voltage discharge ring / ball, and finally the high-voltage end anti-external damage insulation device is fixedly covered on the high-voltage discharge ring / ball.

[0036] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. The present invention provides a corner branch pole ground potential anti-external damage device, which covers the metal exposed points on the corner branch pole with three sets of insulating protection devices, effectively overcoming the problem of birds, snakes, rats, or even other foreign objects connecting to these metal exposed points and causing line short circuits, thereby causing line tripping and other faults.

[0038] 2. The present invention provides a method for preventing external damage to the ground potential of a corner branch pole, which has the advantages of simple operation, low cost of the anti-external damage device used, and high work efficiency. It effectively reduces the work pressure of the power company's line patrol personnel, reduces the investment in manpower and material resources, and has considerable economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Figure (a) shows the corner branch rod before construction of the present invention. Figure 1 Figure (b) shows the corner branch rod after the insulation device is installed;

[0040] Figure 2 It is a structural schematic diagram of the low-voltage end anti-external damage insulation device of the present invention;

[0041] Figure 3 This is a schematic structural diagram of the high-voltage end external damage prevention insulation device of the present invention;

[0042] Figure 4 It is a structural schematic diagram of the double cross-arm insulation shielding device of the present invention;

[0043] Figure 5 This is a schematic diagram of the installation of the double cross-arm insulation shielding device of the present invention;

[0044] Figure 6 Schematic diagram of the low-voltage end anti-external-breakage insulation device, the high-voltage end anti-external-breakage insulation device, and the double-cross-arm insulation shielding device of the present invention respectively used in conjunction with the live-operated insulating rod;

[0045] Figure 7 It is a structural schematic diagram of the live-operated insulating rod of the present invention. DETAILED DESCRIPTION

[0046] The following will be combined with the attached Figures 1 to 7 drawings, and the technical content, structural features, achieved objectives and effects of the present invention will be described in detail through preferred embodiments.

[0047] It should be noted that the attached drawings are in a very simplified form and all use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention, rather than being used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical substantial significance. Any modification of the structure, change in the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the objectives that can be achieved, should still fall within the scope covered by the technical content disclosed by the present invention.

[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] The present invention provides a ground potential anti-external damage device for a corner branch rod as shown in Figure (b) of Figure 1 which is used for the lightning protection strain insulator and the iron cross arm 800 on the existing corner branch rod (such as Figure 1Install an insulation device on the exposed part shown in figure (a) in []. The ground potential anti-external damage device for the corner branch pole includes: a low-voltage end anti-external damage insulation device 400, which is arranged at the low-voltage discharge ring / ball 100 on one side of the lightning protection strain insulator, and is used to cover the low-voltage discharge ring / ball 100 to insulate and block animals and other foreign objects that are in contact with the low-voltage discharge ring / ball 100; a high-voltage end anti-external damage insulation device 500, which is arranged at the high-voltage discharge ring / ball 200 on the other side of the lightning protection strain insulator, and is used to wrap the high-voltage discharge ring / ball 200 to insulate and block foreign objects; a double cross-arm insulation shielding device 600, which is arranged on the iron cross-arm 800, and is used to cover the iron cross-arm 800 to prevent the line from being short-circuited due to animals building nests at this place, and can also indirectly protect the Anpu clamp connection 300.

[0051] In addition, as Figure 6 shown, the ground potential anti-external damage device for the corner branch pole also includes a live operation insulating rod 700, which is used to install the low-voltage end anti-external damage insulation device 400, the high-voltage end anti-external damage insulation device 500 and the double cross-arm insulation shielding device 600 respectively in a live state.

[0052] Among them, as Figure 2 shown, the low-voltage end anti-external damage insulation device 400 includes: a cross-arm base 410, which is in an n-shaped structure, and the cross-arm base 410 is adsorbed on the iron cross-arm 800 at the position of the corner branch pole; a vertically inserted baffle 420, which is located between the cross-arm base 410 and the low-voltage discharge ring / ball 100, and one side of the vertically inserted baffle 420 is connected to the cross-arm base 410, and is used for insulation blocking; a discharge ring cover 430, which is in an arched structure and is connected to the other side of the vertically inserted baffle 420, and the discharge ring cover 430 covers the outside of the low-voltage discharge ring / ball 100, and is used to insulate and block animals and other foreign objects that are in contact with the low-voltage discharge ring / ball 100; a first installation operation module 440, which is arranged on the side of the vertically inserted baffle 420 close to the discharge ring cover 430, and is used to insert and remove the live operation insulating rod 700.

[0053] Specifically, a strong magnetic module is also provided on the inner side of the cross-arm base 410 close to the iron cross-arm 800, and is used for magnetic adsorption and fixation on the iron cross-arm 800.

[0054] Preferably, the low-voltage end anti-external damage insulation device 400 is made of a hard insulation material and is modified with additives such as anti-weathering, anti-ultraviolet aging, and flame retardant.

[0055] Among them, as Figure 3As shown, the high-voltage terminal anti-external-break insulation device 500 includes an upper shield 510 and a lower shield 530 connected by a rotating shaft 520, and the relative opening position between the two shields is rotated through the rotating shaft 520 to achieve opening / closing, and then the high-voltage discharge ring / ball 200 is covered after closing; a second installation operation module 540 is arranged on the top of the upper shield 510 for inserting and removing the live operation insulating rod 700.

[0056] Furthermore, an embedded iron block is arranged on the outer side of the upper shield 510 near the connection of the rotating shaft 520; an adsorption module 550 is arranged on the inner side of the lower shield 530 near the connection of the rotating shaft 520.

[0057] Specifically, the upper shield 510 and the lower shield 530 can rotate along the rotating shaft 520 to be in an open / closed state; before installation, the upper shield 510 and the lower shield 530 are in an open state. After the upper shield 510 is aligned with the high-voltage discharge ring / ball 200, the opening side of the lower shield 530 rotates along the rotating shaft 520, and then the openings of the two shields are closed. After the upper shield 510 and the lower shield 530 are closed and cover the high-voltage discharge ring / ball 200, the adsorption module 550 tightly adsorbs on the embedded iron block, so that the high-voltage terminal anti-external-break insulation device 500 is fixedly covered outside the high-voltage discharge ring / ball 200 without loosening.

[0058] Preferably, the high-voltage terminal anti-external-break insulation device 500 is made of a hard insulating material and is modified with additives such as anti-weathering, anti-ultraviolet aging, and flame retardancy.

[0059] Among them, as Figure 4 and Figure 5 shown, the double cross-arm insulation shielding device 600 includes an arc-shaped base 610; a plurality of angle steel hanging buckles 640 are arranged on one side of the arc-shaped base 610 for hanging on one side of two oppositely arranged iron cross-arms 800; a plurality of strong magnetic installation columns 630 are arranged on the other side of the arc-shaped base 610 for adsorbing the other side of the iron cross-arm 800; a third installation operation module 620 is arranged in the middle of the side of the arc-shaped base 610 on the same side as the strong magnetic installation column 630 for inserting and removing the live operation insulating rod 700.

[0060] In a specific embodiment of the present invention, two angle steel hanging buckles 640 are arranged at both ends of one side of the arc-shaped base 610; two strong magnetic installation columns 630 are arranged at both ends of the other side of the arc-shaped base 610.

[0061] In a real - world scenario, as bird nests are continuously built at the iron cross - arm 800, the structures of the bird nests also cling to the Amp clamp connection 300, and may even directly enclose the Amp clamp connection 300. Therefore, it is also easy to cause a short - circuit between the line at the iron cross - arm 800 and the Amp clamp connection 300. Therefore, after the double - cross - arm insulation shielding device 600 covers the iron cross - arm 800, this kind of phenomenon can be avoided, which indirectly protects the Amp clamp connection 300.

[0062] Preferably, the double - cross - arm insulation shielding device 600 is made of a rigid insulating material and is modified with additives such as anti - weathering, anti - ultraviolet aging, and flame - retardant agents.

[0063] Among them, as Figure 7 shown, the live - working insulating rod 700 includes a rod body 710 and a live - working head 720. The live - working head 720 can be respectively connected to the first installation operation module 440, the second installation operation module 540, and the third installation operation module 620 during installation for live - working installation operations.

[0064] Preferably, the rod body 710 and the live - working head 720 are made of epoxy glass fiber, having reliable insulation performance and being able to meet the usage conditions of live - working operations.

[0065] As Figure 6 shown, the present invention also provides a method for improving the insulation performance by using the corner - branch - pole ground - potential anti - external - damage device, which includes the following steps:

[0066] Step S1, install the low - voltage anti - external - damage insulation device 400 at the low - voltage discharge ring / sphere 100 on one side of the lightning - protection strain insulator to cover the low - voltage discharge ring / sphere 100 to form an insulation barrier;

[0067] S1.1, the operator climbs onto the utility pole, inserts the live - working head 720 of the live - working insulating rod 700 into the first installation operation module 440 of the low - voltage anti - external - damage insulation device 400, and pushes the low - voltage anti - external - damage insulation device 400 near the iron cross - arm 800 of the corner - branch - pole through the live - working insulating rod 700;

[0068] S1.2, visually check the position of the low - voltage discharge ring / sphere 100, align the discharge - ring cover 430 of the low - voltage anti - external - damage insulation device 400 with the low - voltage discharge ring / sphere 100, and then push the live - working insulating rod 700 to make the low - voltage anti - external - damage insulation device 400 drop, and then firmly adsorb the cross - arm base 410 on the iron cross - arm near the low - voltage discharge ring / sphere 100 through the strong - magnetic module;

[0069] S1.3. Adjust the insertion angle of the live working insulating rod 700 relative to the first installation and operation module 440, and then the operator slides the live working insulating rod 700 out of the first installation and operation module 440, thus completing the installation.

[0070] Step S2. Install the high-voltage end anti-breakage insulation device 500 at the high-voltage discharge ring / sphere 200 on the other side of the lightning protection strain insulator to wrap the high-voltage discharge ring / sphere 200 to form an insulation barrier.

[0071] S2.1. With the upper cover 510 and the lower cover 530 of the high-voltage end anti-breakage insulation device 500 open, insert the live working head 720 of the live working insulating rod 700 into the second installation and operation module 540, and then push the upper cover 510 near the high-voltage discharge ring / sphere 200.

[0072] S2.2. Adjust the insertion angle of the live working insulating rod 700 relative to the second installation and operation module 540, slide the live working insulating rod 700 out, and then the open side of the lower cover 530 rotates downward along the rotating shaft 520 to close, thereby covering the high-voltage discharge ring / sphere 200.

[0073] S2.3. Under the strong magnetic attraction of the embedded iron block and the adsorption module 550, the upper cover 510 and the lower cover 530 tightly attract and cover the high-voltage discharge ring / sphere 200, finally realizing the fixed covering of the high-voltage end anti-breakage insulation device 500 on the high-voltage discharge ring / sphere 200.

[0074] Step S3. Install the double cross-arm insulation shielding device 600 on two relatively arranged iron cross-arms 800 to cover the iron cross-arms 800 to achieve insulation barrier.

[0075] S3.1. Insert the live working head 720 of the live working insulating rod 700 into the third installation and operation module 620 and push it near the two relatively arranged iron cross-arms 800.

[0076] S3.2. Hang the angle steel hanger 640 on one side of the arc-shaped base 610 on one of the two relatively arranged iron cross-arms 800, and then adjust the position of the strong magnetic installation column 630 on the other side of the arc-shaped base 610 to make it adsorb the other iron cross-arm 800.

[0077] S3.3. After the adsorption installation, adjust the insertion angle of the live working insulating rod 700 relative to the third installation and operation module 620, and then the operator slides the live working insulating rod 700 out of the third installation and operation module 620, thus completing the installation.

[0078] In another embodiment, the operation steps may also be as follows:

[0079] Step S1: Install the high-voltage anti-external-break insulation device 500 at the high-voltage discharge ring / sphere 200 on the other side of the lightning protection strain insulator to wrap the high-voltage discharge ring / sphere 200 to form an insulation barrier.

[0080] Step S2: Install the low-voltage anti-external-break insulation device 400 at the low-voltage discharge ring / sphere 100 on one side of the lightning protection strain insulator to cover the low-voltage discharge ring / sphere 100 to form an insulation barrier.

[0081] Step S3: Install the double-cross-arm insulation shielding device 600 on two relatively arranged iron cross-arms 800 to cover the iron cross-arms 800 to achieve insulation barrier.

[0082] Alternatively, the operation steps may also be as follows:

[0083] Step S1: Install the double-cross-arm insulation shielding device 600 on two relatively arranged iron cross-arms 800 to cover the iron cross-arms 800 to achieve insulation barrier.

[0084] Step S2: Install the low-voltage anti-external-break insulation device 400 at the low-voltage discharge ring / sphere 100 on one side of the lightning protection strain insulator to cover the low-voltage discharge ring / sphere 100 to form an insulation barrier.

[0085] Step S3: Install the high-voltage anti-external-break insulation device 500 at the high-voltage discharge ring / sphere 200 on the other side of the lightning protection strain insulator to wrap the high-voltage discharge ring / sphere 200 to form an insulation barrier.

[0086] That is, there is no clear limit on the order of installation for the three operation steps of installing the low-voltage anti-external-break insulation device 400 at the low-voltage discharge ring / sphere 100 on one side of the lightning protection strain insulator, installing the high-voltage anti-external-break insulation device 500 at the high-voltage discharge ring / sphere 200 on the other side of the lightning protection strain insulator, and installing the double-cross-arm insulation shielding device 600 on two relatively arranged iron cross-arms 800.

[0087] In summary, a corner branch pole ground potential anti-external-break device and method provided by the present invention effectively overcome the faults such as short circuit of the line caused by birds, snakes, rats, or even other foreign objects lapping on these metal exposed points, and further causing line tripping, etc., by covering the metal exposed points on the corner branch pole with 3 sets of insulation protection devices; in addition, the anti-external-break method has the advantages of simple operation, low cost of the anti-external-break device used, and high working efficiency, effectively reducing the work pressure of the line patrol personnel of the power company and reducing the input of manpower and material resources, and having considerable economic benefits.

[0088] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A ground potential anti-external damage device for corner branch poles, which is used for insulating and blocking the high-voltage and low-voltage discharge rings / spheres (200, 100) of lightning protection tension insulators and the metal exposed points on the iron cross-arm (800), and is characterized in that, The ground potential anti-external damage device for the corner branch pole includes: A low-voltage anti-external damage insulation device (400), which is arranged at the low-voltage discharge ring / sphere (100) on one side of the lightning protection strain insulator, and is used to cover the low-voltage discharge ring / sphere (100) to form an insulation barrier; A high-voltage anti-external damage insulation device (500), which is arranged at the high-voltage discharge ring / sphere (200) on the other side of the lightning protection strain insulator, and is used to wrap the high-voltage discharge ring / sphere (200) to form an insulation barrier; A double cross-arm insulation shielding device (600), which is arranged on the iron cross-arm (800), and is used to cover the metal exposed points of the iron cross-arm (800) to form an insulation barrier and indirectly protect the Anpu wire clamp connection (300).

2. The ground potential anti-external damage device for the corner branch pole according to claim 1, characterized in that It further includes: a live operation insulating rod (700), which includes a rod body (710) and a live operation head (720). The live operation head (720) of the live operation insulating rod (700) is detachably connected to the low-voltage anti-external damage insulation device (400), the high-voltage anti-external damage insulation device (500) and the double cross-arm insulation shielding device (600) respectively, and is installed live; Wherein, the rod body (710) and the live operation head (720) are made of epoxy glass fiber.

3. The ground potential anti-external damage device for the corner branch pole according to claim 2, characterized in that The low-voltage anti-external damage insulation device (400) includes: A cross-arm base (410), which is installed on the iron cross-arm (800) at the position where the corner branch pole is located; A vertical insertion baffle (420), which is located between the cross-arm base (410) and the low-voltage discharge ring / sphere (100), and one side of the vertical insertion baffle (420) is connected to the cross-arm base (410) for insulation barrier; A discharge ring cover (430), which has an arched structure and is connected to the other side of the vertical insertion baffle (420). The discharge ring cover (430) covers the low-voltage discharge ring / sphere (100) and is used to insulate and block animals and other foreign objects that are on the low-voltage discharge ring / sphere (100); A first installation operation module (440), which is arranged on the side of the vertical insertion baffle (420) close to the discharge ring cover (430), and is connected to the live operation head (720) during installation to insert and remove the live operation insulating rod (700).

4. The ground potential anti-external damage device for the corner branch pole according to claim 3, characterized in that, A strong magnetic module is further arranged on the inner side of the cross-arm base (410) close to the iron cross-arm (800) for magnetic adsorption and fixation on the iron cross-arm (800).

5. The ground potential anti-external damage device for the corner branch pole according to claim 2, characterized in that, The high-voltage anti-external damage insulation device (500) includes: An upper shield (510) and a lower shield (530) connected by a rotating shaft (520), and the relative opening position between the two shields is rotated through the rotating shaft (520) to realize opening / closing, and then the high-voltage discharge ring / sphere (200) is wrapped after closing; A second installation operation module (540), which is arranged on the top of the upper shield (510), and is connected to the live operation head (720) during installation to insert and remove the live operation insulating rod (700).

6. The ground potential anti-external damage device for the corner branch pole according to claim 5, characterized in that The upper shield (510) is provided with an embedded iron block on the outer side near the connection of the rotating shaft (520); the lower shield (530) is provided with an adsorption module (550) on the inner side near the connection of the rotating shaft (520); after the upper shield (510) and the lower shield (530) are closed, the high-voltage discharge ring / sphere (200) is fixedly covered by the strong magnetic attraction between the embedded iron block and the adsorption module (550).

7. The ground potential anti-external damage device for the corner branch pole according to claim 2, characterized in that, The double cross-arm insulation shielding device (600) includes: An arc-shaped base (610); A plurality of angle iron hangers (640) arranged on one side of the arc-shaped base (610) for hanging on one side of two oppositely arranged iron cross-arms (800); A plurality of strong magnetic mounting posts (630) arranged on the other side of the arc-shaped base (610) for adsorbing the other iron cross-arm (800); A third installation operation module (620) arranged in the middle of the side of the arc-shaped base (610) on the same side as the strong magnetic mounting post (630), which is connected to the live operation head (720) during installation to insert and remove the live operation insulating rod (700).

8. The ground potential anti-external damage device for the corner branch pole according to claim 1, characterized in that, The low-voltage end anti-external breakage insulation device (400), the high-voltage end anti-external breakage insulation device (500), and the double cross-arm insulation shielding device (600) are all made of hard insulating materials, and anti-weathering additives, anti-ultraviolet aging additives, and flame retardant additives are added during injection molding.

9. A method for preventing external damage to the ground potential of a corner branch pole, which is realized based on the device for preventing external damage to the ground potential of the corner branch pole according to any one of claims 1 to 8, characterized in that, It includes the following processes: Insert the live operation head (720) of the live operation insulating rod (700) into the first installation operation module (440) of the low-voltage end anti-external breakage insulation device (400), and through the live operation insulating rod (700), align the discharge ring cover (430) with the low-voltage discharge ring / sphere (100) and then install it on the iron cross-arm near the low-voltage discharge ring / sphere (100) side, and cover the low-voltage end anti-external breakage insulation device (400) on the low-voltage discharge ring / sphere (100) to form an insulation barrier; Insert the live operation head (720) of the live operation insulating rod (700) into the second installation operation module (540) of the high-voltage end anti-external breakage insulation device (500), and through the live operation insulating rod (700), move the upper shield (510) and the lower shield (530) in the open state near the high-voltage discharge ring / sphere (200), and wrap the high-voltage discharge ring / sphere (200) by closing the upper shield (510) and the lower shield (530) to form an insulation barrier; Insert the live operation head (720) of the live operation insulating rod (700) into the third installation operation module (620) of the double cross-arm insulation shielding device (600), and through the live operation insulating rod (700), install the angle iron hangers (640) and the strong magnetic mounting posts (630) on two oppositely arranged iron cross-arms (800), and cover the double cross-arm insulation shielding device (600) on the iron cross-arm (800) to form an insulation barrier.

10. The ground potential anti-external damage method for the corner branch pole according to claim 9, characterized in that, The installation of the high-voltage end anti-external breakage insulation device (500) specifically includes the following steps: With the upper shield (510) and the lower shield (530) of the high-voltage end anti-external-break insulation device (500) in the open state, insert the live operation head (720) of the live operation insulating rod (700) into the second installation operation module (540), and then push the upper shield (510) near the high-voltage discharge ring / sphere (200). Adjust the insertion angle of the live operation insulating rod (700) relative to the second installation operation module (540), slide out the live operation insulating rod (700), and then the opening side of the lower shield (530) rotates downward along the rotating shaft (520) to close, thereby covering the high-voltage discharge ring / sphere (200). Under the strong magnetic attraction of the embedded iron block and the adsorption module (550), the upper shield (510) and the lower shield (530) are tightly attracted and cover the high-voltage discharge ring / sphere (200), and finally the high-voltage end anti-external-break insulation device (500) is fixedly covered on the high-voltage discharge ring / sphere (200).

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