Lightning arrester for electric power iron tower

Abstract

The utility model discloses an electric power iron tower lightning arrester, which relates to the technical field of electric power iron tower lightning arresters and comprises an installation mechanism, and a lightning protection ball is clamped and installed at the top of the installation mechanism. By the adoption of the structure, the mounting mechanism effectively optimizes the mounting and dismounting process of the lightning protection ball, when the mounting mechanism is used, the lightning protection ball is arranged between the clamping arc plates, the adjusting handrail is rotated to drive the lead screw to rotate on the mounting rail, and due to the fact that the screwing directions of threads at the two ends of the lead screw are opposite, the sliding block is driven to reciprocate along the two ends in the mounting rail and pushes the clamping arms; the clamping arc plate is inserted into the lightning protection ball clamping groove to achieve stable clamping, after clamping is completed, the installation screw rod on the adjusting handrail is rotated to be inserted into the limiting hole to be locked, the annular limiting holes arranged at equal intervals can be matched with lightning protection balls of different specifications, and during dismounting, the installation screw rod is reversely screwed out, the adjusting handrail is rotated to enable the screw rod to rotate reversely, and the sliding block is driven to move outwards. And the clamping arms pull the clamping arc plates to be pulled out, and operation is easy, convenient and efficient.

Description

Technical Field

[0001] This utility model belongs to the technical field of lightning protection devices for power transmission towers, and specifically relates to a lightning protection device for power transmission towers. Background Technology

[0002] In modern power systems, power towers are critical infrastructure supporting power lines, and their safe operation is of paramount importance. Lightning strikes are one of the main natural disasters threatening the safety of power towers and power lines. Powerful lightning currents can cause line tripping, equipment damage, and even fires, seriously affecting the stable power supply of the power system. Therefore, efficient and reliable lightning protection devices have become an indispensable part of ensuring the safety of the power system.

[0003] Traditional lightning protection devices for power transmission towers mainly consist of an air terminal, a down conductor, and a grounding device. The air terminal is installed at the top of the tower and attracts lightning in the form of a lightning rod or lightning wire, guiding the current to the down conductor. The down conductor is laid along the tower body and is responsible for safely conducting the lightning current received by the air terminal to the grounding device. The grounding device, through good contact with the earth, evenly distributes the lightning current into the earth, effectively reducing the potential difference between the tower and the surrounding ground, and preventing high voltage lightning strikes from causing damage to equipment and personnel.

[0004] With the development of technology, a lightning protection device for power towers, such as the one with announcement number "CN211088743U", has emerged. This device achieves a stable connection between the lightning rod and the lightning ball by opening a first through hole and multiple second through holes on the lightning ball, and by designing the size and connection method of the lightning rod, the lightning rod base and the first gasket. The connection between the lightning ball and the power tower is stable and reliable, and the installation and disassembly are convenient and safe.

[0005] However, practical application testing has revealed significant limitations of this device. On the one hand, the connection between the lightning arrester ball and the support frame is relatively fixed, making it difficult to quickly separate the lightning arrester ball from the support frame when disassembly is required, thus affecting maintenance efficiency. On the other hand, the lightning rod is installed on the lightning arrester ball using a threaded connection method. Being in a harsh outdoor environment for extended periods, the threaded connection is highly susceptible to corrosion and dust blockage. Such conditions would seriously threaten the normal operation of the lightning protection device, leading to a decline in lightning protection performance and an inability to effectively protect the safety of power towers and lines. The existing defects in the structural design and connection methods of power tower lightning protection devices urgently need to be addressed through innovative design improvements to meet the growing demands for safe operation of power systems and enhance the reliability and ease of maintenance of lightning protection devices. Utility Model Content

[0006] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a lightning protection device for power transmission towers to solve the problem that the existing technology is inconvenient to disassemble and maintain during application.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A lightning protection device for power transmission towers includes an installation mechanism, a lightning protection ball clamped and installed on the top of the installation mechanism, a limiting mechanism installed at equal intervals on the upper outer surface of the lightning protection ball, a lightning rod body installed on the upper surface of the lightning protection ball through the limiting mechanism, and the lightning protection ball connected to the ground through a grounding wire.

[0009] The installation mechanism includes an installation rail and a clamping groove. A lead screw is rotatably connected to the inner side of the installation rail. The two ends of the lead screw have opposite thread directions. Both ends of the lead screw are threadedly connected to sliders. The sliders are slidably connected to the inner ends of the installation rail. A clamping arm is fixedly installed on the top of the slider. A clamping arc plate is fixedly installed on the upper end of the clamping arm. The clamping groove is opened in the middle of the outer surface of the lightning protection ball. The clamping arc plate is inserted into the inside of the clamping groove. An adjustment component is fixedly connected to the end of the lead screw through the installation rail.

[0010] As a preferred technical solution, mounting plates are fixedly installed at both ends of the mounting rail, and mounting holes are provided at both ends of the mounting plates, which are countersunk holes.

[0011] As a preferred technical solution, the adjustment component includes a fixed plate, which is fixedly installed at one end of the mounting rail. An adjustment handle is rotatably connected to the outer side of the fixed plate, and the inner side of the adjustment handle is connected to the end of the lead screw.

[0012] As a preferred technical solution, one side of the adjustable armrest is threaded with a mounting screw, which is configured as a hand-tightening screw.

[0013] As a preferred technical solution, the outer side of the fixed plate is provided with limit holes at equal intervals, and the end of the mounting screw is inserted into the limit hole.

[0014] As a preferred technical solution, the limiting mechanism includes an installation sleeve and a plug. The installation sleeve is fixedly connected to the upper outer surface of the lightning rod at equal intervals. An annular groove is provided on the inner side of the installation sleeve. An elastic component is fixedly connected to the inner side of the annular groove. The bottom of the plug is inserted into the interior of the installation sleeve. The plug is fixedly connected to the bottom of the lightning rod body. The elastic component and the plug are engaged.

[0015] As a preferred technical solution, the elastic component includes a torsion spring, which is fixedly connected to the inside of an annular groove. A slip ring is fixedly installed on the top of the torsion spring and slidably connected to the upper end of the inside of the annular groove. A limiting arc shaft is fixedly connected to the top of the slip ring at equal intervals. A limiting arc sleeve is fixedly connected to the outer surface of the plug in an annular arrangement at equal intervals. The end of the limiting arc shaft is inserted into the inside of the limiting arc sleeve. The limiting arc shaft, the limiting arc sleeve, and the torsion spring are arranged in concentric circles. The internal cross-sectional shape of the plug and the mounting sleeve is set to a regular hexagon.

[0016] In summary, the present invention has the following main advantages:

[0017] First, the installation mechanism of this device effectively optimizes the installation and disassembly process of the lightning protection ball. When in use, place the lightning protection ball between the clamping arc plates, rotate the adjusting handle to drive the screw to rotate on the installation rail. Because the threads at both ends of the screw turn in opposite directions, the slider moves back and forth along both ends inside the installation rail. The slider pushes the clamping arm, so that the clamping arc plate is inserted into the lightning protection ball clamping groove to achieve a stable clamping. After clamping is completed, rotate the mounting screw on the adjusting handle to insert it into the limiting hole to lock it. The ring-shaped and equally spaced limiting holes can be adapted to different specifications of lightning protection balls. When disassembling, rotate the mounting screw in the opposite direction, rotate the adjusting handle to make the screw reverse, drive the slider to move outward, and the clamping arm pulls the clamping arc plate out. The operation is simple and efficient.

[0018] Secondly, the limiting mechanism provides an efficient solution for the installation and maintenance of the lightning rod body. When installing the lightning rod body, align the bottom plug with the mounting sleeve and insert it. Rotate the slip ring to compress the torsion spring, causing the clamping arc shaft and the clamping arc sleeve to be misaligned, making it easier for the plug to be inserted. After the plug is in place, release the slip ring, and the torsion spring will reset, causing the slip ring and the top limiting arc shaft to rotate and insert into the limiting arc sleeve. The regular hexagonal plug and the mounting sleeve mutually limit each other. Combined with the limiting arc shaft and the limiting arc sleeve, the limiting is set to ensure that the lightning rod is stably installed. When disassembling and inspecting, rotate the slip ring to disengage the limiting arc shaft from the limiting arc sleeve, and the plug can be pulled out, realizing quick removal and replacement, which is convenient for device maintenance. Attached Figure Description

[0019] Figure 1 This is a top view of the structure of this utility model;

[0020] Figure 2 This is a bottom view structural diagram of this utility model;

[0021] Figure 3 This is a schematic diagram of the lightning protection ball and limiting mechanism of this utility model;

[0022] Figure 4 This is a utility model Figure 1 A magnified structural diagram at point A;

[0023] Figure 5 This is a utility model Figure 3A magnified structural diagram at point A.

[0024] Reference numerals: 1. Mounting mechanism; 11. Mounting rail; 12. Clamping groove; 13. Lead screw; 14. Slider; 15. Clamping arm; 16. Clamping arc plate; 17. Adjustment component; 171. Fixed plate; 172. Adjusting handle; 173. Mounting screw; 174. Limiting hole; 2. Lightning arrester ball; 3. Limiting mechanism; 31. Mounting sleeve; 32. Plug; 33. Annular groove; 34. Elastic component; 341. Torsion spring; 342. Slip ring; 343. Limiting arc shaft; 344. Limiting arc sleeve; 4. Lightning rod body; 5. Mounting plate; 6. Mounting hole. Detailed Implementation

[0025] Example

[0026] refer to Figures 1 to 5 The lightning protection device for power towers in this embodiment includes an installation mechanism 1, a lightning protection ball 2 clamped and installed on the top of the installation mechanism 1, a limiting mechanism 3 installed at equal intervals on the upper outer surface of the lightning protection ball 2, a lightning rod body 4 installed on the upper surface of the lightning protection ball 2 through the limiting mechanism 3, and the lightning protection ball 2 connected to the ground through a grounding wire.

[0027] The installation mechanism 1 includes an installation rail 11 and a clamping groove 12. A lead screw 13 is rotatably connected to the inner side of the installation rail 11. The two ends of the lead screw 13 have opposite threads. Both ends of the lead screw 13 are threadedly connected to sliders 14. The sliders 14 are slidably connected to the inner ends of the installation rail 11. A clamping arm 15 is fixedly installed on the top of the slider 14. A clamping arc plate 16 is fixedly installed on the upper end of the clamping arm 15. The clamping groove 12 is opened in the middle of the outer surface of the lightning protection ball 2. The clamping arc plate 16 is inserted into the inside of the clamping groove 12. An adjusting component 17 is fixedly connected to the end of the lead screw 13 through the installation rail 11. When the installation mechanism 1 of this power tower lightning protection device is working, the lead screw 13 is rotated by adjusting the component 17. Since the two ends of the lead screw 13 have opposite threads, the sliders 14 connected by the threads at both ends can be rotated. Block 14 slides in opposite directions at both ends within the mounting rail 11. The sliding of the slider 14 drives the clamping arm 15 fixed at its top to move synchronously, thereby causing the clamping arc plate 16 at the upper end of the clamping arm 15 to move toward the clamping groove 12 opened in the middle of the outer surface of the lightning protection ball 2 until it is inserted into the clamping groove 12, thus achieving a stable clamping and installation of the lightning protection ball 2. The lightning protection ball 2 is connected to the ground through a grounding wire, which can introduce lightning current into the ground. The limiting mechanism 3, which is installed at equal intervals on the outer surface of the lightning protection ball 2, achieves a stable installation of the lightning protection ball 2 on the lightning protection ball 2 through specific operations when installing the lightning rod body 4, such as the mutual limiting of the hexagonal plug 32 and the mounting sleeve 31, and the insertion limiting of the limiting arc shaft 343 and the limiting arc sleeve 344, thereby ensuring the normal operation of the entire lightning protection device.

[0028] refer to Figures 1-2Mounting plates 5 are fixedly mounted at both ends of the mounting rail 11. Mounting holes 6 are provided at both ends of the mounting plates 5, and these holes are countersunk. The adjusting assembly 17 includes a fixed plate 171, which is fixedly mounted at one end of the mounting rail 11. An adjusting handle 172 is rotatably connected to the outer side of the fixed plate 171. The inner side of the adjusting handle 172 is connected to the end of the lead screw 13. A mounting screw 173 is threadedly connected to one side of the adjusting handle 172. The mounting screw 173 is a hand-tightening screw. Limiting holes 174 are provided at equal intervals on the outer side of the fixed plate 171. The end of the mounting screw 173 is inserted into the limiting hole 174. The mounting plates 5 fixed at both ends of the mounting rail 11 have countersunk holes at both ends to securely install the mounting rail 11 in the corresponding positions, ensuring the overall stability of the mounting rail. To ensure the stability of the installation mechanism 1, when the adjustment component 17 is working, rotating the adjustment handle 172 causes the screw 13 to rotate within the installation rail 11. Since the inner side of the adjustment handle 172 is connected to the end of the lead screw 13, the lead screw 13 can be driven to rotate within the installation rail 11. Because the threads at both ends of the lead screw 13 rotate in opposite directions, the sliders 14 at both ends slide in opposite directions within the installation rail 11, thereby achieving the clamping or releasing operation of the lightning protection ball 2. After adjustment, to prevent the adjustment handle 172 from rotating accidentally, the hand-tightening installation screw 173 threaded on the adjustment handle 172 can be screwed into the equidistant limiting holes 174 on the outer side of the fixing plate 171. The position of the adjustment handle 172 is locked by the cooperation of the installation screw 173 and the limiting holes 174, ensuring that the position of the lead screw 13 is fixed and maintaining the clamping state of the lightning protection ball 2, which facilitates the subsequent use and maintenance of the lightning protection device.

[0029] refer to Figures 1-3The limiting mechanism 3 includes a mounting sleeve 31 and a plug 32. The mounting sleeve 31 is fixedly connected to the upper outer surface of the lightning rod 2 at equal intervals. An annular groove 33 is provided on the inner side of the mounting sleeve 31. An elastic component 34 is fixedly connected to the inner side of the annular groove 33. The bottom of the plug 32 is inserted into the inside of the mounting sleeve 31 and is fixedly connected to the bottom of the lightning rod body 4. The elastic component 34 and the plug 32 are engaged. The elastic component 34 includes a torsion spring 341, which is fixedly connected to the inside of the annular groove 33. The top of the torsion spring 341 is fixedly mounted on the upper outer surface of the lightning rod 2. Equipped with a slip ring 342, the slip ring 342 is slidably connected to the upper end of the annular groove 33. A limiting arc shaft 343 is fixedly connected at equal intervals to the top of the slip ring 342. A limiting arc sleeve 344 is fixedly connected at equal intervals in a ring on the outer surface of the plug 32. The end of the limiting arc shaft 343 is inserted into the limiting arc sleeve 344. The limiting arc shaft 343, the limiting arc sleeve 344, and the torsion spring 341 are arranged concentrically. The internal cross-sectional shape of the plug 32 and the mounting sleeve 31 is set as a regular hexagon. When the limiting mechanism 3 is working, the lightning rod body is first... 4. Insert the plug 32 at the bottom into the mounting sleeves 31 fixed at equal intervals on the outer surface of the lightning arrester ball 2. During insertion, manually rotate the slip ring 342. The slip ring 342 is connected to the torsion spring 341 fixed in the annular groove 33. Rotating the slip ring 342 compresses the torsion spring 341. At this time, the limiting arc shaft 343 at the top of the slip ring 342 is misaligned with the limiting arc sleeves 344 arranged in a ring on the outer surface of the plug 32, creating conditions for the plug 32 to be smoothly inserted into the mounting sleeve 31. Since the internal cross-sectional shape of the plug 32 and the mounting sleeve 31 are both regular hexagonal, during insertion... The two can initially limit each other. After the plug 32 is in place, the slip ring 342 is released, and the torsion spring 341 instantly returns to its original position, causing the slip ring 342 to rotate. This causes the limiting arc shaft 343 at the top of the slip ring 342 to rotate synchronously and be precisely inserted into the limiting arc sleeve 344, further enhancing the limiting effect and ensuring that the lightning rod body 4 is securely installed on the outer surface of the lightning protection ball 2. When it is necessary to disassemble the lightning rod body 4, the slip ring 342 is rotated again to disengage the limiting arc shaft 343 from the limiting arc sleeve 344, and the plug 32 can be pulled out from the mounting sleeve 31 for convenient disassembly.

[0030] Operating Principle and Advantages: This device, through the installation mechanism 1, effectively optimizes the installation and disassembly process of the lightning arrester ball 2, significantly improving the ease of use. During the initial use phase, the lightning arrester ball 2 is precisely placed between the clamping arc plates 16. By manually adjusting the handle 172, the screw 13 is driven to rotate within the mounting rail 11. Since the threads at both ends of the screw 13 rotate in opposite directions, its rotation synchronously causes the slider 14 to reciprocate along both ends within the mounting rail 11. The displacement of the slider 14 further pushes the clamping arm 15 at its top to slide synchronously, causing the clamping arm 15 to drive the clamping arc plate 16 at its top to precisely insert into the clamping groove 12 of the lightning arrester ball 2, thereby achieving a stable clamping and fixing of the lightning arrester ball 2. After the clamping operation is completed... To ensure the stability of the position of the adjustable handrail 172, the mounting screw 173 on the adjustable handrail 172 can be rotated to insert it into the limiting hole 174, thus locking the mounting screw 173. The limiting holes 174 are arranged in a ring with equal spacing. This design can flexibly adapt to lightning protection balls 2 of different specifications and sizes, significantly improving the versatility of the device. When it is necessary to remove the lightning protection ball 2, simply rotate the mounting screw 173 in the opposite direction to disengage it from the limiting hole 174. Then, rotate the adjustable handrail 172 again to drive the lead screw 13 to rotate in the opposite direction. The reverse rotation of the lead screw 13 drives the slider 14 to slide outward, thereby causing the clamping arm 15 to pull the clamping arc plate 16 out of the clamping groove 12, realizing the quick removal of the lightning protection ball 2. The whole process is simple and efficient.

[0031] The limiting mechanism 3 of this invention provides an efficient solution for the installation and maintenance of the lightning rod body 4. During installation, the plug 32 at the bottom of the lightning rod body 4 is aligned with the mounting sleeve 31 and precisely inserted. During this process, the slip ring 342 is manually rotated, compressing the torsion spring 341. At this time, the clamping arc shaft on the slip ring 342 is misaligned with the clamping arc sleeve, creating conditions for the plug 32 to smoothly insert into the inner side of the mounting sleeve 31. Once the plug 32 is inserted, the slip ring 342 is released, and the torsion spring 341 instantly returns to its original position, causing the slip ring 342 to rotate back to its initial position. During the return process of the slip ring 342, the limiting arc shaft 34 at its top... 3. The plug 32 is synchronously rotated and inserted into the limiting arc sleeve 344. Since the plug 32 has a regular hexagonal structure, after being inserted into the mounting sleeve 31, the plug 32 and the mounting sleeve 31 form a mutual limiting relationship. Combined with the insertion limiting effect of the limiting arc shaft 343 and the limiting arc sleeve 344, it can ensure that the lightning rod body 4 is stably installed on the outer surface of the lightning protection ball 2. When it is necessary to disassemble and repair the lightning rod body 4, simply rotate the slip ring 342 again to disengage the limiting arc shaft 343 from the limiting arc sleeve 344. Then, the plug 32 can be easily pulled out from the mounting sleeve 31, realizing the quick removal and replacement of the lightning rod body 4, which greatly improves the convenience of device maintenance.

Claims

1. A lightning protection device for power transmission towers, comprising an installation mechanism (1), characterized in that: The top of the installation mechanism (1) is clamped and installed with a lightning rod ball (2). The upper outer surface of the lightning rod ball (2) is equipped with a limiting mechanism (3) at equal intervals. The upper surface of the lightning rod ball (2) is equipped with a lightning rod body (4) through the limiting mechanism (3). The lightning rod ball (2) is connected to the ground through a grounding wire. The installation mechanism (1) includes an installation rail (11) and a clamping groove (12). A lead screw (13) is rotatably connected to the inner side of the installation rail (11). The two ends of the lead screw (13) have opposite threads. Both ends of the lead screw (13) are threadedly connected to sliders (14). The sliders (14) are slidably connected to the two ends inside the installation rail (11). A clamping arm (15) is fixedly installed on the top of the slider (14). A clamping arc plate (16) is fixedly installed on the upper end of the clamping arm (15). The clamping groove (12) is opened in the middle of the outer surface of the lightning protection ball (2). The clamping arc plate (16) is inserted into the inside of the clamping groove (12). An adjustment component (17) is fixedly connected to the end of the lead screw (13) through the installation rail (11).

2. The lightning protection device for power transmission towers according to claim 1, characterized in that: Mounting plates (5) are fixedly installed at both ends of the mounting rail (11), and mounting holes (6) are provided at both ends of the mounting plates (5), which are countersunk holes.

3. The lightning protection device for power transmission towers according to claim 1, characterized in that: The adjustment assembly (17) includes a fixed plate (171), which is fixedly installed on one end of the mounting rail (11). An adjustment handle (172) is rotatably connected to the outer side of the fixed plate (171), and the inner side of the adjustment handle (172) is connected to the end of the lead screw (13).

4. A lightning protection device for power transmission towers according to claim 3, characterized in that: The adjusting armrest (172) has a threaded connection to a mounting screw (173) on one side, and the mounting screw (173) is a hand-tightening screw.

5. A lightning protection device for power transmission towers according to claim 4, characterized in that: The fixed plate (171) has equidistant limiting holes (174) on its outer side, and the end of the mounting screw (173) is inserted into the limiting hole (174).

6. A lightning protection device for power transmission towers according to claim 1, characterized in that: The limiting mechanism (3) includes an installation sleeve (31) and a plug (32). The installation sleeve (31) is fixedly connected to the upper outer surface of the lightning rod (2) at equal intervals. An annular groove (33) is provided on the inner side of the installation sleeve (31). An elastic component (34) is fixedly connected to the inner side of the annular groove (33). The bottom of the plug (32) is inserted into the interior of the installation sleeve (31). The plug (32) is fixedly connected to the bottom of the lightning rod body (4). The elastic component (34) and the plug (32) are engaged.

7. A lightning protection device for power transmission towers according to claim 6, characterized in that: The elastic component (34) includes a torsion spring (341), which is fixedly connected to the inside of the annular groove (33). A slip ring (342) is fixedly installed on the top of the torsion spring (341). The slip ring (342) is slidably connected to the upper end of the inside of the annular groove (33). A limiting arc shaft (343) is fixedly connected to the top of the slip ring (342) at equal intervals. A limiting arc sleeve (344) is fixedly connected to the outer surface of the plug (32) in an annular arrangement at equal intervals. The end of the limiting arc shaft (343) is inserted into the inside of the limiting arc sleeve (344). The limiting arc shaft (343), the limiting arc sleeve (344), and the torsion spring (341) are arranged in concentric circles. The internal cross-sectional shape of the plug (32) and the mounting sleeve (31) is set as a regular hexagon.

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