A lightning arrester mounting device and method

Abstract

The application discloses a lightning arrester mounting device, which comprises a side-phase cross arm fixing support assembly and a middle-phase top head iron fixing support assembly for mounting the lightning arrester. The side-phase cross arm fixing support assembly comprises a side-phase base support body, the side-phase base support body comprises a top surface and an L-shaped vertical surface for abutting a side surface of the cross arm, a first lightning arrester mounting hole is formed in the top surface, and the side-phase base support body is detachably connected with the cross arm through a fastening assembly. The middle-phase top head iron fixing support assembly comprises a middle-phase base support body, the middle-phase base support body comprises a vertical arm for abutting a side surface of the top head iron and a horizontal arm for connecting a top portion of the top head iron, and a second lightning arrester mounting hole is formed in the horizontal arm. The application further provides a lightning arrester mounting method, and has the advantages of simple structure, strong applicability and convenient installation.

Description

Technical Field

[0001] This invention relates to the field of power transmission and distribution equipment technology, specifically to a surge arrester installation device and method. Background Technology

[0002] With the increasing demands for power supply reliability, the maintenance of distribution network lines has gradually shifted from outage maintenance to live-line maintenance. As a crucial component of lightning protection for distribution network lines, the live-line installation and replacement of surge arresters has become a routine part of distribution network operation and maintenance. Currently, the live-line installation of surge arresters selected for distribution network lines typically employs the insulated glove method, relying on insulated bucket trucks, insulated scaffolding, insulated ladders, or insulated platforms, combined with extensive insulation shielding. However, this method of operation has the following problems: First, insulated bucket trucks are difficult to access due to terrain limitations such as fields, hills, and mountains, making it impossible to carry out live-line installation of surge arresters; second, the load-bearing platform components such as insulated scaffolding, insulated ladders, and insulated platforms are numerous and require a large amount of assembly, with a wide insulation shielding range and complex operation procedures, resulting in significant physical exertion for workers; third, the number of insulated load-bearing platform equipment is limited, and live-line work can only be carried out in specific areas and at pole positions unaffected by terrain, thus limiting the scope of operation; fourth, there are many models of surge arresters for distribution networks, but few compatible live-line work tools, making it impossible to quickly and timely complete the emergency repair and replacement of surge arresters.

[0003] An existing technology has proposed a solution, namely the Chinese invention patent application with publication number "CN113904261A", which proposes a live-line surge arrester replacement device, including a dedicated mounting base and matching fastening components, enabling live-line operation via an insulated rod tool. However, the existing technology still has the following shortcomings: First, existing technology is only designed for line surge arresters with specific structural types, while there are many specifications and models of surge arresters in actual distribution networks. This device cannot adapt to the installation requirements of surge arresters from different manufacturers and with different structural types, and its versatility is poor. Secondly, the existing technology is only designed for the installation of surge arresters on the side phase crossarm. For the installation of surge arresters in the middle phase of the delta pole head, the mounting base cannot be matched and positioned with the top iron, so the technical problem of live installation of surge arresters in the middle phase of the delta pole head has not been solved. Third, the existing mounting base structure is complex and has many parts, making installation and operation inconvenient. Fourth, the existing current-drain clamp installation method is only applicable to specific models of surge arresters. The fastening tools for the current-drain clamp and the base installation tools are independent of each other, and no integrated installation solution is formed, resulting in low work efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a surge arrester installation device and method that is simple in structure, highly applicable, and easy to install.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A surge arrester installation device includes a side-phase crossarm fixing bracket assembly and a middle-phase top iron fixing bracket assembly for installing the surge arrester. The side-phase crossarm fixing bracket assembly includes a side-phase base bracket body, which includes a top surface and an L-shaped vertical surface for fitting against the side of the crossarm. A first surge arrester mounting hole is provided on the top surface. The side-phase base bracket body is detachably connected to the crossarm by a fastening assembly. The middle-phase top iron fixing bracket assembly includes a middle-phase base bracket body, which includes a vertical arm for fitting against the side of the top iron and a horizontal arm for connecting to the top of the top iron. A second surge arrester mounting hole is provided on the horizontal arm.

[0006] As a further improvement to the above technical solution: The fastening assembly includes a retaining bolt, a clamping block, and a cotter pin. The retaining bolt passes through the clamping block mounting hole of the clamping block and is connected to the side phase base bracket body. The bolt has a pin hole at the tail end. The cotter pin passes through the pin hole and is bent to restrict the fastening nut.

[0007] An anti-loosening washer is provided between the clamping block and the fastening nut.

[0008] The clamping block is a cross-shaped clamping block, which has a clamping block mounting hole that mates with the retaining bolt and a pin mating hole for the positioning pin to pass through.

[0009] The side base support body is provided with a first reinforcing rib and a second reinforcing rib. The first reinforcing rib connects the top surface and the L-shaped facade, and the second reinforcing rib is located at the right angle of the L-shaped facade.

[0010] The middle phase base support body is provided with a third reinforcing rib, which connects the vertical arm and the horizontal arm.

[0011] It also includes an insulating operating rod, one end of which is provided with an operating head that engages with a retaining bolt for tightening or loosening the retaining bolt.

[0012] It also includes an insulating clamping rod, one end of which is provided with an openable clamping head for clamping the surge arrester and transporting it to the installation position of the crossarm or top iron.

[0013] A surge arrester installation method including the above-mentioned surge arrester installation device is also provided, comprising the following steps: S1. Ground assembly: Assemble the surge arrester with the side phase crossarm fixing bracket assembly or the middle phase top iron fixing bracket assembly on the ground, and adjust the opening direction of the external series gap of the surge arrester according to the pole head type. S2. Climbing the pole to test for electricity: The operator climbs the pole to the bottom of the crossarm and uses a voltage detector to test the conductor, insulator and crossarm for electricity. After confirming that there is no leakage, the insulated pole bracket and the transfer rope are hung. S3. Insulation shielding: Use the insulation operating rod to install the rigid insulation shielding cover on the three-phase conductor, and install the insulator shielding cover on the two phase insulators; S4. Live installation: Following the order of middle phase first and then side phases, transfer the assembled surge arresters to the pole in sequence. Use the insulated operating rod to tighten the buckle bolts, fix the middle phase top iron fixing bracket assembly to the top iron, fix the side phase crossarm fixing bracket assembly to the crossarm, and fix the surge arrester in the corresponding installation position. S5. Remove shielding: Remove the insulation shielding equipment for each phase in sequence and transfer it to the ground; S6. Inspection and withdrawal: After checking that there are no objects left on the pole, the workers return to the ground.

[0014] As a further improvement to the above technical solution: step S1 includes: S1.1 Installing a triangular pole head surge arrester: When the pole head is a triangular pole head, adjust the gap opening of the middle phase surge arrester to be horizontal with the horizontal arm of the middle phase base support body, and adjust the gap opening of the two side phase surge arresters to be 90° with the top surface of the side phase base support body. S1.2 Install horizontally arranged pole head surge arresters: When the pole heads are horizontally arranged, adjust the gap opening of the surge arrester to be horizontal with the top surface of the side phase base support body.

[0015] Compared with the prior art, the advantages of the present invention are as follows: Firstly, the present invention discloses a surge arrester installation device, which realizes the live installation of surge arresters of various typical pole head types in distribution network lines by setting a side phase crossarm fixing bracket assembly on the side phase crossarm and a middle phase top iron fixing bracket assembly on the middle phase top iron. This solves the technical problems in the prior art where insulated bucket trucks cannot be positioned and middle phase surge arresters cannot be installed.

[0016] Secondly, the surge arrester installation device disclosed in this invention, by setting up detachable fastening components, allows operators to quickly complete the installation and disassembly of the base bracket using an insulated operating rod while the power is on, realizing uninterrupted maintenance of the surge arrester, not limited by terrain, and with wide applicability.

[0017] Thirdly, the surge arrester installation device disclosed in this invention, through the use of snap-fit ​​bolts and clamping blocks, allows the base bracket to be quickly clamped onto the crossarm without drilling or welding into the crossarm, thus achieving live installation. Cotter pins prevent the nuts from loosening and falling off, improving the reliability of the connection.

[0018] Fourth, the surge arrester installation device disclosed in this invention increases the contact area and friction between the clamping block and the fastening nut by setting anti-loosening shims, effectively preventing the nut from loosening due to vibration during long-term operation, and further improving the reliability of the device.

[0019] Fifth, the lightning arrester installation device disclosed in this invention uses a cross-shaped clamping block to ensure that the cross arm presses evenly against the lower flange surface of the crossarm when tightened, avoiding uneven load and rotation. After the cotter pin is inserted into the pin mating hole, both ends are bent and locked to further prevent loosening and ensure that the base bracket will not loosen due to vibration during long-term outdoor operation.

[0020] Sixth, the surge arrester installation device disclosed in this invention significantly improves the load-bearing capacity and bending stiffness of the side phase base support body by setting the first and second reinforcing ribs, further ensuring that the surge arrester remains stable during operation.

[0021] Seventh, the present invention discloses a surge arrester installation device, which enhances the structural strength of the middle phase base support body by setting a third reinforcing rib, so that it can reliably bear the weight and operating load of the middle phase surge arrester.

[0022] Eighth, the present invention discloses a surge arrester installation device. By setting an insulated operating rod, the operator can remotely operate the retaining bolt on the ground or the pole using the insulated operating rod to achieve live installation and disassembly without direct contact with the live equipment, thus ensuring operational safety.

[0023] Ninth, the present invention discloses a surge arrester installation device. By setting an insulating clamping rod, the operator can safely transfer the assembled surge arrester to the installation position on the rod, avoiding direct contact between the human body and the live parts. Together with the insulating operating rod, it forms a complete insulating rod operating tool combination.

[0024] Tenth, this invention also discloses a surge arrester installation method based on the above-mentioned surge arrester installation device. This method achieves safe, efficient, and all-terrain adaptable live-line installation of surge arresters through ground assembly, insulation shielding, and live-line installation of the middle phase first and then the side phases in a coordinated manner. It solves the technical problem of traditional insulated bucket trucks being limited by terrain in the prior art, and significantly improves the convenience of operation and maintenance and the reliability of power supply of surge arresters in distribution network lines. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the exploded structure principle of the side phase crossarm fixing bracket assembly and fastening assembly of the present invention.

[0026] Figure 2 This is a schematic diagram illustrating the structural principle of the middle phase top iron fixing bracket assembly of the present invention.

[0027] The labels in the diagram represent: 1. Side phase crossarm fixing bracket assembly; 11. Side phase base bracket body; 111. Top surface; 112. L-shaped facade; 113. First surge arrester mounting hole; 114. First reinforcing rib; 115. Second reinforcing rib; 12. Fastening assembly; 121. Buckle bolt; 122. Clamping block; 1221. Clamping block mounting hole; 1222. Pin mating hole; 123. Cotter pin; 124. Anti-loosening washer; 125. Fastening nut; 2. Middle phase top iron fixing bracket assembly; 21. Middle phase base bracket body; 211. Vertical arm; 212. Horizontal arm; 2121. Second surge arrester mounting hole; 213. Third reinforcing rib. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Example 1 like Figure 1 and Figure 2 As shown, the surge arrester installation device of this embodiment includes a side phase crossarm fixing bracket assembly 1 and a middle phase top iron fixing bracket assembly 2 for installing surge arresters. The side phase crossarm fixing bracket assembly 1 includes a side phase base bracket body 11, which includes a top surface 111 and an L-shaped vertical surface 112 for fitting the side of the crossarm. A first surge arrester mounting hole 113 is provided on the top surface 111. The side phase base bracket body 11 is detachably connected to the crossarm through a fastening assembly 12. The middle phase top iron fixing bracket assembly 2 includes a middle phase base bracket body 21, which includes a vertical arm 211 for fitting the side of the top iron and a horizontal arm 212 for connecting the top of the top iron. A second surge arrester mounting hole 2121 is provided on the horizontal arm 212.

[0033] The specific installation principle is as follows: In use, first select the appropriate base bracket according to the pole head type. For the side phases of a triangular pole head or horizontally arranged pole heads, select the side phase crossarm fixing bracket assembly 1, attach the L-shaped vertical surface 112 to the side of the crossarm, and place the top surface 111 above the crossarm so that the surge arrester mounting hole 113 faces upward; then use the fastening assembly 12 to fix the side phase base bracket body 11 to the crossarm, and further install the surge arrester in the first surge arrester mounting hole 113. For the middle phase of a triangular pole head, select the middle phase top iron fixing bracket assembly 2, attach the vertical arm 211 to the side of the top iron, place the horizontal arm 212 on the top of the top iron, and fix it with fasteners (such as clamps), and finally install the surge arrester in the second surge arrester mounting hole 2121.

[0034] Through the aforementioned special scientific design, this surge arrester installation device has the following advantages: Firstly, by setting up a side phase crossarm fixing bracket assembly 1 on the side phase crossarm and a middle phase top iron fixing bracket assembly 2 on the middle phase top iron, the live installation of surge arresters of various typical pole head types in distribution network lines is realized, solving the technical problems of insulated bucket trucks being unable to reach the location and middle phase surge arresters being unable to be installed in the existing technology.

[0035] Secondly, by setting up a detachable fastening component 12, operators can quickly install and disassemble the base bracket using an insulated operating rod while the circuit is energized, thus enabling uninterrupted maintenance of the surge arrester. This is not limited by terrain and has wide applicability.

[0036] like Figure 1As shown, in this embodiment, the fastening assembly 12 includes a retaining bolt 121, a clamping block 122, and a cotter pin 123. The retaining bolt 121 passes through the clamping block mounting hole 1221 of the clamping block 122 and connects to the side phase base bracket body 11. The bolt end of the retaining bolt 121 has a pin hole, and the cotter pin 123 passes through the pin hole and is bent to secure the fastening nut 125. By setting the retaining bolt 121 to cooperate with the clamping block 122, the base bracket can be quickly clamped onto the crossarm without drilling or welding on the crossarm, achieving live installation. The cotter pin 123 prevents the nut from loosening and falling off, improving the reliability of the connection.

[0037] like Figure 1 As shown, in this embodiment, an anti-loosening washer 124 is provided between the clamping block 122 and the fastening nut 125. By providing the anti-loosening washer 124, the contact area and friction between the clamping block 122 and the fastening nut 125 are increased, effectively preventing the nut from loosening due to vibration during long-term operation, and further improving the reliability of the device.

[0038] like Figure 1 As shown, in this embodiment, the clamping block 122 is a cross-shaped clamping block. The cross-shaped clamping block is provided with a clamping block mounting hole 1221 that mates with the retaining bolt 121 and a pin mating hole 1222 for passing through the positioning pin. In use, the cross arms of the cross-shaped clamping block evenly press against the lower flange surface of the crossarm when tightened to avoid uneven load and rotation. After the cotter pin 123 is inserted into the pin mating hole 1222, both ends are bent and locked to further prevent loosening and ensure that the base bracket will not loosen due to vibration during long-term outdoor operation.

[0039] like Figure 1 As shown, in this embodiment, the side-phase base support body 11 is provided with a first reinforcing rib 114 and a second reinforcing rib 115. The first reinforcing rib 114 connects the top surface 111 and the L-shaped facade 112, and the second reinforcing rib 115 is located at the right angle of the L-shaped facade 112. By setting the first reinforcing rib 114 and the second reinforcing rib 115, the load-bearing capacity and bending stiffness of the side-phase base support body 11 are significantly improved, further ensuring the stability of the surge arrester during operation.

[0040] like Figure 2 As shown, in this embodiment, the middle phase base support body 21 is provided with a third reinforcing rib 213, which connects the vertical arm 211 and the horizontal arm 212. By setting the third reinforcing rib 213, the structural strength of the middle phase base support body 21 is enhanced, enabling it to reliably bear the weight and operating load of the middle phase surge arrester.

[0041] In this embodiment, the surge arrester installation device also includes an insulated operating rod (not shown in the figure). One end of the insulated operating rod is provided with an operating head that mates with the retaining bolt 121 for tightening or loosening the retaining bolt 121. By setting up the insulated operating rod, operators can remotely operate the retaining bolt 121 from the ground or on the pole, realizing live installation and disassembly without direct contact with live equipment, thus ensuring operational safety.

[0042] In this embodiment, the surge arrester installation device also includes an insulating clamping rod (not shown in the figure). One end of the insulating clamping rod is equipped with an openable clamping head for clamping the surge arrester and transporting it to the installation position on the crossarm or top iron. By setting up the insulating clamping rod, the operator can safely transfer the assembled surge arrester to the installation position on the rod, avoiding direct contact between the human body and the live parts. Together with the insulating operating rod, it forms a complete insulating rod operating tool combination.

[0043] Example 2 This embodiment provides a surge arrester installation method based on the above-mentioned surge arrester installation device, including the following steps: Before commencing work, conduct a site survey, verify the poles to be worked on, check if the poles meet the requirements, and inventory the types and quantities of tools and equipment needed for the work to ensure they are complete and qualified. Set up safety barriers around the work site. Perform visual inspection and impact testing on all climbing tools and equipment required for the work, and visual inspection and insulation testing on all insulating equipment to ensure they are all qualified. The work supervisor clearly explains the tasks, safety measures, and technical requirements to the team members, outlining the work tasks, personnel assignments, and operational techniques. They also explain on-site safety measures and risk areas, emphasizing risk control measures and operating procedures.

[0044] S1.1 Ground installation of triangular pole head surge arresters: When the pole head is a triangular pole head, adjust the gap opening of the middle phase surge arrester to be horizontal with the horizontal arm 212 of the middle phase base support body 21, and adjust the gap opening of the two side phase surge arresters to be 90° with the top surface 111 of the side phase base support body 11. S1.2 Ground-mounted horizontally arranged pole head surge arresters: When the pole heads are horizontally arranged, adjust the gap opening of the surge arrester to be horizontal with the top surface 111 of the side phase base bracket body 11; S2. Climbing the pole for voltage testing: The operator puts on personal protective equipment, carries a transfer rope and voltage detector, climbs the working pole to the crossarm of the working point, and uses the voltage detector to test the conductor, insulator and crossarm for voltage. After confirming that there is no leakage, the operator hangs the insulated pole bracket and the transfer rope.

[0045] S3. Insulation shielding: The pole electrician connects the insulated operating rod to the rigid insulation shielding cover to insulate and shield the three-phase live conductors, and at the same time installs insulator shielding covers on both phase post insulators.

[0046] S4. Live Installation: The ground electrician passes the assembled surge arresters to the pole electrician in the order of middle phase first, then side phases. The pole electrician uses an insulated operating rod to clamp the middle phase top iron fixing bracket assembly 2 onto the top iron or the side phase crossarm fixing bracket assembly 1 onto the crossarm, inserts the retaining bolt 121, puts on the cross-shaped clamping block and anti-loosening washer 124, uses the insulated operating rod to tighten the fastening nut 125, inserts the cotter pin 123 and bends it to lock it, thus fixing the surge arrester in the first surge arrester mounting hole 113 or the second surge arrester mounting hole 2121.

[0047] S5. Removal of shielding: The pole electrician uses an insulated operating rod to remove the rigid shielding covers of the three-phase conductors and the two side phases in sequence, and then passes the rigid shielding covers to the ground.

[0048] S6. Inspection and Evacuation: After checking that there are no objects left on the pole, the workers return to the ground in turn to complete the live installation of the surge arrester.

[0049] Through the above steps, this method achieves safe, efficient, and all-terrain adaptable live-line installation of surge arresters by coordinating ground assembly, insulation shielding, and live-line installation of the middle phase followed by the side phases. It solves the technical problem of traditional insulated bucket trucks being limited by terrain in the existing technology, and significantly improves the convenience of operation and maintenance and the reliability of power supply of surge arresters in distribution network lines.

[0050] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A surge arrester installation device, characterized in that: The assembly includes a side phase crossarm fixing bracket assembly (1) and a middle phase top iron fixing bracket assembly (2) for installing surge arresters. The side phase crossarm fixing bracket assembly (1) includes a side phase base bracket body (11), which includes a top surface (111) and an L-shaped vertical surface (112) for fitting the side of the crossarm. A first surge arrester mounting hole (113) is provided on the top surface (111). The side phase base bracket body (11) is detachably connected to the crossarm by a fastening assembly (12). The middle phase top iron fixing bracket assembly (2) includes a middle phase base bracket body (21), which includes a vertical arm (211) for fitting the side of the top iron and a horizontal arm (212) for connecting the top of the top iron. A second surge arrester mounting hole (2121) is provided on the horizontal arm (212).

2. The surge arrester installation device according to claim 1, characterized in that: The fastening assembly (12) includes a retaining bolt (121), a clamping block (122), and a cotter pin (123). The retaining bolt (121) passes through the clamping block mounting hole (1221) of the clamping block (122) and is connected to the side phase base bracket body (11). The bolt end of the retaining bolt (121) has a pin hole. The cotter pin (123) passes through the pin hole and is bent to restrict the fastening nut (125).

3. The surge arrester installation device according to claim 2, characterized in that: An anti-loosening washer (124) is provided between the clamping block (122) and the fastening nut (125).

4. The surge arrester installation device according to claim 2, characterized in that: The clamping block (122) is a cross-shaped clamping block. The cross-shaped clamping block is provided with a clamping block mounting hole (1221) that mates with the buckle bolt (121) and a pin mating hole (1222) for passing through the positioning pin.

5. The surge arrester installation device according to claim 1, characterized in that: The side base support body (11) is provided with a first reinforcing rib (114) and a second reinforcing rib (115). The first reinforcing rib (114) connects the top surface (111) and the L-shaped facade (112). The second reinforcing rib (115) is located at the right angle of the L-shaped facade (112).

6. The surge arrester installation device according to claim 1, characterized in that: The middle phase base support body (21) is provided with a third reinforcing rib (213), which connects the vertical arm (211) and the horizontal arm (212).

7. The surge arrester installation device according to claim 1, characterized in that: It also includes an insulating operating rod, one end of which is provided with an operating head that engages with the retaining bolt (121) for tightening or loosening the retaining bolt (121).

8. The surge arrester installation device according to claim 1, characterized in that: It also includes an insulating clamping rod, one end of which is provided with an openable clamping head for clamping the surge arrester and transporting it to the installation position of the crossarm or top iron.

9. A method for installing a surge arrester including the surge arrester installation device according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. Ground assembly: Assemble the surge arrester with the side phase crossarm fixing bracket assembly (1) or the middle phase top iron fixing bracket assembly (2) on the ground, and adjust the opening direction of the surge arrester's external series gap according to the pole head type. S2. Climbing the pole to test for electricity: The operator climbs the pole to the bottom of the crossarm and uses a voltage detector to test the conductor, insulator and crossarm for electricity. After confirming that there is no leakage, the insulated pole bracket and the transfer rope are hung. S3. Insulation shielding: Use the insulation operating rod to install the rigid insulation shielding cover on the three-phase conductor, and install the insulator shielding cover on the two phase insulators; S4. Live installation: In the order of middle phase first and side phases last, the assembled surge arresters are passed to the pole in sequence. The buckle bolts (121) are tightened using the insulated operating rod. The middle phase top iron fixing bracket assembly (2) is fixed to the top iron, the side phase crossarm fixing bracket assembly (1) is fixed to the crossarm, and the surge arrester is fixed in the corresponding installation position. S5. Remove shielding: Remove the insulation shielding equipment for each phase in sequence and transfer it to the ground; S6. Inspection and withdrawal: After checking that there are no objects left on the pole, the workers return to the ground.

10. The surge arrester installation method of the surge arrester installation device according to claim 9, characterized in that, Step S1 includes: S1.1 Installing a triangular pole head surge arrester: When the pole head is a triangular pole head, adjust the gap opening of the middle phase surge arrester to be horizontal with the horizontal arm (212) of the middle phase base support body (21), and adjust the gap opening of the two side phase surge arresters to be 90° with the top surface (111) of the side phase base support body (11). S1.2 Install horizontally arranged pole head surge arresters: When the pole head is horizontally arranged, adjust the gap opening of the surge arrester to be horizontal with the top surface (111) of the side phase base bracket body (11).

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