Lightning protection device for power transmission line

Abstract

The utility model discloses a lightning protection device for a power transmission line, and relates to the technical field of lightning protection devices. The damping device comprises an iron tower cross arm and a first rectangular supporting plate arranged above the iron tower cross arm. The iron tower cross arm and the first rectangular supporting plate are provided with a damping mechanism and two fixing mechanisms. A second rectangular supporting plate is arranged above the first rectangular supporting plate, a lightning rod body is fixedly connected to the upper portion of the second rectangular supporting plate, the vibration reduction mechanism comprises a plurality of dampers fixedly connected to the top of the first rectangular supporting plate, and the tops of the dampers are all fixedly connected with the second rectangular supporting plate. According to the utility model, through the arrangement of the damping mechanism, the problem that the normal work of the lightning protection device is affected due to the fact that the lightning protection device is not tightly connected with the line because the components such as connecting bolts and nuts are gradually loosened because the power transmission line vibrates due to factors such as wind blowing, thermal expansion and cold contraction and the like along with the accumulation of time in the use process of the conventional lightning protection device for the electric line is solved.

Description

Technical Field

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

[0002] As an important channel for power transmission, the safe and stable operation of power transmission lines is crucial to ensuring power supply. However, power transmission lines are usually erected outdoors, widely distributed, and mostly located in open areas, making them extremely vulnerable to lightning strikes. Lightning strikes can cause a series of faults such as line tripping, insulator flashover, conductor burning, and even tower damage, seriously affecting the reliability and stability of the power system and causing huge economic losses to production and daily life. Therefore, lightning protection is necessary for power transmission lines.

[0003] However, during the use of existing power line lightning protection devices, over time, the transmission lines will vibrate due to factors such as wind and thermal expansion and contraction, causing the connecting bolts, nuts and other components to gradually loosen. This will result in the lightning protection device not being tightly connected to the line, affecting its normal operation. Utility Model Content

[0004] The purpose of this utility model is to provide a lightning protection device for power transmission lines. By setting up a vibration damping mechanism, it solves the problem that in the process of using existing lightning protection devices, the power transmission lines will vibrate due to factors such as wind and thermal expansion and contraction over time, causing the connecting bolts, nuts and other components to gradually loosen, which will make the connection between the lightning protection device and the line loose and affect its normal operation.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a lightning protection device for transmission lines, including a tower crossarm and a rectangular support plate set above the tower crossarm. The tower crossarm and the rectangular support plate are provided with a vibration damping mechanism and two fixing mechanisms.

[0007] A second rectangular support plate is provided above the first rectangular support plate, and a lightning rod body is fixedly connected to the top of the second rectangular support plate. The vibration damping mechanism includes several dampers fixedly connected to the top of the first rectangular support plate, and the tops of the dampers are all fixedly connected to the second rectangular support plate. The fixing mechanism includes bolts that pass through the crossarm of the iron tower and the first rectangular support plate.

[0008] Furthermore, each of the dampers is fitted with a spring, the top of each spring is fixedly connected to a rectangular support plate, and the bottom of each spring is fixedly connected to the rectangular support plate.

[0009] Furthermore, two rectangular support plates three are fixedly connected to the top of the rectangular support plate one, two sliding rods are fixedly connected between the two rectangular support plates three, two rectangular sliders are slidably connected to the outer walls of the two sliding rods, and spring two is sleeved on the outer walls of the two sliding rods.

[0010] Furthermore, the left and right sides of the two springs are fixedly connected to two rectangular sliders, and the bottom of the rectangular support plate is fixedly connected to two connecting blocks.

[0011] Furthermore, each of the two connecting blocks 1 is hinged to a connecting rod at its bottom, and each of the two rectangular sliders is fixedly connected to a connecting block 2 at its top. The bottoms of the two connecting rods are respectively hinged to the two connecting blocks 2.

[0012] Furthermore, a nut is threaded onto the outer wall of the bolt, and a hexagonal limiting block is fixedly connected to the top of the nut. The hexagonal limiting block has several limiting grooves, and a limiting rod is provided in two corresponding limiting grooves. The limiting rod passes through the bolt.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting up a vibration damping mechanism, if the lightning rod body is affected by vibration during use, the damper and spring 1 will work together to significantly reduce the impact of vibration on the lightning rod body. Due to the vibration, the rectangular support plate 2 will move closer to the rectangular support plate 1. At this time, the two rectangular sliders will move away from each other under the connection of connecting block 1, connecting rod and connecting block 2, thereby forcing the two springs 2 to be stretched. During the stretching process of spring 2, spring 2 will further increase the vibration damping effect of the device and reduce the fatigue of the damper and spring 1, so as to effectively absorb and dissipate the vibration energy of the lightning rod body, significantly reduce the impact of vibration on the lightning rod body, reduce the vibration amplitude, protect the lightning rod body and the transmission line equipment connected to it, avoid component damage, loose connection and other problems caused by vibration, ensure that the lightning rod can play a normal lightning protection role, and keep the lightning rod body in a relatively stable position in the vibration environment, preventing it from being displaced or tilted due to vibration, which would affect the lightning protection effect.

[0015] 2. By setting up a fixing mechanism, when it is necessary to install and fix the device, the rectangular support plate can be placed on the crossarm of the iron tower. Then, take out the bolt, pass it through the crossarm of the iron tower and the rectangular support plate, then take out the nut and screw it on the bolt. Finally, take out the limiting rod, pass it through the two corresponding limiting slots and through the bolt, and then bend the end of the limiting rod to make it bend to prevent it from slipping. This completes the installation of the device, which can prevent the bolt from loosening and rotating during use and prevent the nut from coming loose. It plays a double insurance role, improves the reliability of the entire installation structure, reduces the risk of device failure due to loose parts, and ensures that the lightning protection device will not easily shake or move during use. It can effectively resist external wind, vibration and other forces, ensure the stability of the device, and thus better play its lightning protection role.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the fixing mechanism of this utility model;

[0020] Figure 3 This is a partial cross-sectional view of the vibration reduction mechanism of this utility model.

[0021] Figure 4 This utility model Figure 3 A magnified structural diagram of A in the middle;

[0022] Figure 5 This utility model Figure 2 A magnified structural diagram of B in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Tower crossarm; 101. Rectangular support plate one; 102. Rectangular support plate two; 103. Lightning rod body; 2. Vibration damping mechanism; 211. Damper; 212. Spring one; 213. Rectangular support plate three; 214. Sliding rod; 215. Rectangular slider; 216. Spring two; 217. Connecting block one; 218. Connecting rod; 219. Connecting block two; 3. Fixing mechanism; 311. Bolt; 312. Nut; 313. Hexagonal limiting block; 314. Limiting groove; 315. Limiting rod. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-5 As shown, this utility model is a lightning protection device for power transmission lines, including a tower crossarm 1 and a rectangular support plate 101 set above the tower crossarm 1. The tower crossarm 1 and the rectangular support plate 101 are provided with a vibration damping mechanism 2 and two fixing mechanisms 3. A rectangular support plate 2 102 is set above the rectangular support plate 101, and a lightning rod body 103 is fixedly connected above the rectangular support plate 2 102.

[0027] The vibration damping mechanism 2 includes several dampers 211 fixedly connected to the top of a rectangular support plate 101. The tops of each damper 211 are fixedly connected to a rectangular support plate 102. Springs 212 are fitted onto the outer walls of each damper 211. The tops of each spring 212 are fixedly connected to the rectangular support plate 102, and the bottoms of each spring 212 are fixedly connected to the rectangular support plate 101. Two rectangular support plates 213 are fixedly connected to the top of the rectangular support plate 101. Two sliding rods 214 are fixedly connected between the two rectangular support plates 213. Two rectangular sliders 215 are slidably connected to the outer walls of the two sliding rods 214. Springs 216 are fitted onto the outer walls of the two sliding rods 214. The left and right sides of each spring 216 are fixedly connected to the two rectangular sliders 215. The bottom of the support plate 212 is fixedly connected to two connecting blocks 217. The bottom of each connecting block 217 is hinged with a connecting rod 218. The top of each of the two rectangular sliders 215 is fixedly connected to a connecting block 219. The bottom of each connecting rod 218 is hinged to the two connecting blocks 219. By setting the vibration damping mechanism 2, the vibration energy received by the lightning rod body 103 can be effectively absorbed and dissipated, greatly reducing the impact of vibration on the lightning rod body 103, reducing the vibration amplitude, protecting the lightning rod body 103 and the power transmission line equipment connected to it, avoiding problems such as component damage and loose connection caused by vibration, ensuring that the lightning rod can play a normal lightning protection role, and enabling the lightning rod body 103 to maintain a relatively stable position in the vibration environment, preventing it from undergoing large displacement or tilting due to vibration, which would affect the lightning protection effect.

[0028] The fixing mechanism 3 includes bolts 311 that pass through the crossarm 1 of the iron tower and the rectangular support plate 101. Nuts 312 are threaded onto the outer wall of the bolts 311. A hexagonal limiting block 313 is fixedly connected to the top of the nut 312. Several limiting grooves 314 are provided on the hexagonal limiting block 313. Limiting rods 315 are provided in two corresponding limiting grooves 314. The limiting rods 315 pass through the bolts 311. By setting the fixing mechanism 3, the bolts 311 can be prevented from loosening and rotating during use, and the nuts 312 can be prevented from loosening. This provides a double insurance effect, improves the reliability of the entire installation structure, reduces the risk of device failure due to loose parts, ensures that the lightning protection device will not easily shake or shift during use, and can effectively resist external wind, vibration and other forces, ensuring the stability of the device and thus better playing its lightning protection role.

[0029] A specific application of this embodiment is as follows: In use, first place the rectangular support plate 101 on the tower crossarm 1, then remove the bolt 311, pass it through the tower crossarm 1 and the rectangular support plate 101, then remove the nut 312 and screw it onto the bolt 311. Finally, remove the limiting rod 315, pass it through the two corresponding limiting slots 314 and through the bolt 311, then bend the end of the limiting rod 315 to prevent slippage, thus completing the installation of the device. After installation, the lightning rod body 103 can be used to protect the transmission line from lightning. The lightning rod body 103 is a high-voltage transmission line lightning rod from Henan Yangbo Lightning Protection Technology Co., Ltd. The product's transmission voltage is available in: 10KV, 25KV, 30KV, 50KV, and 100KV; weight: 20KG; diameter: 1000mm; height: 8... 00mm; Material: Stainless steel, alloy; Average amplitude of main discharge current is less than 7kA; Steepness of main discharge current ≤5kA / μs. During the use of the lightning rod body 103, if the lightning rod body 103 is affected by vibration, the damper 211 and spring 1 212 will cooperate to greatly reduce the impact of vibration on the lightning rod body 103. Due to the vibration, the rectangular support plate 2 102 will move closer to the rectangular support plate 1 101. At this time, the two rectangular sliders 215 will move away from each other under the connection of connecting block 1 217, connecting rod 218 and connecting block 2 219, thereby forcing the two springs 2 216 to be stretched. During the stretching process of spring 2 216, spring 2 216 will further increase the vibration reduction effect of the device and reduce the fatigue of damper 211 and spring 1 212.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lightning protection device for power transmission lines, characterized in that: It includes a tower crossarm (1) and a rectangular support plate (101) set above the tower crossarm (1). The tower crossarm (1) and the rectangular support plate (101) are provided with a vibration damping mechanism (2) and two fixing mechanisms (3). A rectangular support plate two (102) is provided above the rectangular support plate one (101), and a lightning rod body (103) is fixedly connected above the rectangular support plate two (102). The vibration damping mechanism (2) includes a plurality of dampers (211) fixedly connected to the top of the rectangular support plate one (101), and the top of the plurality of dampers (211) is fixedly connected to the rectangular support plate two (102). The fixing mechanism (3) includes bolts (311) that pass through the iron tower crossarm (1) and the rectangular support plate one (101).

2. The lightning protection device for transmission lines according to claim 1, characterized in that, A spring (212) is fitted on the outer wall of each of the dampers (211). The top of each spring (212) is fixedly connected to a rectangular support plate (102), and the bottom of each spring (212) is fixedly connected to a rectangular support plate (101).

3. A lightning protection device for transmission lines according to claim 2, characterized in that, Two rectangular support plates (213) are fixedly connected to the top of the rectangular support plate 1 (101), and two sliding rods (214) are fixedly connected between the two rectangular support plates (213).

4. A lightning protection device for transmission lines according to claim 3, characterized in that, Two rectangular sliders (215) are slidably connected to the outer walls of the two sliders (214), and springs (216) are sleeved on the outer walls of the two sliders (214).

5. A lightning protection device for transmission lines according to claim 4, characterized in that, The left and right sides of the two springs (216) are fixedly connected to two rectangular sliders (215), and the bottom of the rectangular support plate (102) is fixedly connected to two connecting blocks (217).

6. A lightning protection device for transmission lines according to claim 5, characterized in that, The bottom of each of the two connecting blocks (217) is hinged with a connecting rod (218), and the top of each of the two rectangular sliders (215) is fixedly connected with a connecting block (219). The bottom of each of the two connecting rods (218) is hinged to the two connecting blocks (219).

7. A lightning protection device for transmission lines according to claim 6, characterized in that, A nut (312) is threaded onto the outer wall of the bolt (311), and a hexagonal limiting block (313) is fixedly connected to the top of the nut (312).

8. A lightning protection device for transmission lines according to claim 7, characterized in that, The hexagonal limiting block (313) has several limiting grooves (314), and a limiting rod (315) is provided in two corresponding limiting grooves (314), and the limiting rod (315) passes through the bolt (311).

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