Lightning arrester for radio and television signal transmitting tower

Abstract

The invention relates to the technical field of lightning arresters, in particular to a lightning arrester for a radio and television signal transmitting tower. Comprising a lightning arrester. A fixing part; a support part; the detection assembly is used for acquiring the value of the current flowing through the lightning arrester when the lightning arrester is in the point discharge state; the analysis component is used for comparing the current value with a corresponding current threshold value and determining whether to adjust the target height of the lightning arrester according to a comparison result; the telescopic part is used for responding to the analysis assembly to adjust the height of the lightning arrester to be a safe height; according to the invention, the current value flowing through the lightning arrester is detected in real time, and whether the lightning arrester effectively plays a protection role or not can be visually judged by comparing the current value with the preset current threshold value. The telescopic part can automatically adjust the height of the lightning arrester according to an instruction of the analysis assembly so as to adapt to lightning strokes with different intensities. The flexibility of the lightning arrester is improved, and effective protection can be provided under various lightning stroke conditions, so that the safety of the lightning arrester is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lightning protection devices, and in particular to a lightning protection device for a radio and television signal transmission tower. Background Art

[0002] Radio and television signal transmission towers are usually installed at high places, and the transmitting antennas contain a large number of sophisticated electronic devices, which are very likely to become targets of lightning attacks. Once struck by lightning, radio and television equipment may be seriously damaged, affecting safe broadcasting, and even causing fires or explosions, leading to major broadcasting accidents. Lightning protection devices, such as lightning rods and lightning nets, can effectively guide lightning energy underground, preventing lightning from directly hitting the transmission tower and its equipment, thereby protecting the transmission equipment from damage.

[0003] Therefore, how to improve the safety of lightning protection devices and ensure that lightning protection devices play a protective role in lightning weather is a heavy task to ensure the normal operation of radio and television signal transmission towers. For example, a lightning arrester is disclosed in the prior art, which connects bakelite to a shunt through a coil. The shunt includes a cavity and a sealing cover, and a first terminal and a second terminal are arranged along the two ends of the cavity; in the cavity, the first terminal and the second terminal are respectively connected to the graphite sheet module; the bakelite is connected to a first connecting piece, the first terminal is connected to a second connecting piece, and the first connecting piece and the second connecting piece are connected through the coil; the first connecting piece is used to connect to the power module, the second connecting piece is used to connect to the power module, and the second terminal is used for grounding. This device is not only simple in structure and good in shunting effect, but also easy to maintain, and can effectively reduce the damage caused to the power module by lightning.

[0004] However, in the above-mentioned lightning arrester technical solution, it is impossible to detect in real time the current value flowing through the lightning arrester after a lightning strike, and it is impossible to know whether the lightning arrester is effectively playing a protective role. In addition, when the lightning arrester cannot effectively guide the lightning strike, it is impossible to timely and effectively change the existing structure of the lightning arrester to adapt to lightning strikes of different intensities, resulting in lower safety of the lightning arrester. Summary of the invention

[0005] The purpose of the present invention is to provide a lightning protection device for a radio and television signal transmission tower to solve the problems in the related art that the current value flowing through the lightning protection device after a lightning strike cannot be detected in real time, and whether the lightning protection device effectively plays a protective role cannot be known, and when the lightning protection device cannot effectively guide the lightning strike, the existing structure of the lightning protection device cannot be changed in time and effectively to adapt to lightning strikes of different intensities, thereby resulting in low safety of the lightning protection device.

[0006] To this end, the present invention provides a lightning protection device for a radio and television signal transmission tower, comprising: Lightning arrester; The fixing part is used to maintain the overall stability of the lightning protection device; A supporting portion, connected to the fixing portion, and used to vertically support the lightning receptor to a target height; A detection component connected to the lightning receptor, and used to obtain a current value flowing through the lightning receptor when the lightning receptor is in tip discharge; An analysis component connected to the detection component, used for comparing the current value with a corresponding current threshold, and determining whether to adjust the target height of the lightning receptor according to the comparison result; A telescopic portion, which is respectively connected to the lightning receptor, the supporting portion and the analysis component, and is used to respond to the analysis component to adjust the height of the lightning receptor to a safe height; The safe height is the height at which the lightning receptor is located when the current value flowing through the lightning receptor is not greater than the current threshold.

[0007] The fixing portion includes a flange portion and a rib plate, specifically: The flange is connected to the ground through a preset hole to maintain the overall stability of the lightning protection device; The top of the flange portion is provided with four ribs welded to the support portion to maintain the overall stability of the lightning protection device; Among them, two of the ribs are arranged symmetrically in the transverse direction, and the remaining two ribs are arranged symmetrically in the longitudinal direction.

[0008] The support part includes a vertical rod and an auxiliary support rod, specifically: A suspension damper is provided inside the vertical pole. The auxiliary support rod is arranged outside the vertical rod, arranged in a positive cone shape and connected to the vertical rod.

[0009] A cross bar and a cross bar are arranged between two adjacent auxiliary support bars.

[0010] The specific arrangement of the suspension damper inside the vertical pole is as follows: Two anchor points symmetrically arranged on the inner wall of the upright pole pull two cables to connect the suspension damper.

[0011] The suspended damper is suspended inside the vertical pole; Wherein, the maximum swing amount of the suspension damper is smaller than the minimum distance between the suspension damper and the inner wall of the vertical pole.

[0012] The telescopic part is connected to the linear guide rail provided on the inner wall of the vertical pole through gears, and the telescopic part is raised and lowered through gear transmission to adjust the height of the lightning receptor; Wherein, the diameter of the telescopic part is smaller than the diameter of the vertical pole.

[0013] The analysis component compares the current value with the corresponding current threshold to determine whether to adjust the target height of the lightning receptor, specifically: The analyzing component compares the current value with the current threshold; Wherein, if the current value is not greater than the current threshold, the analysis component remains silent; If the current value is greater than the current threshold, the analysis component sends a telescoping instruction to the telescoping portion.

[0014] The telescopic unit responds to the telescopic instruction specifically as follows: When the current value is greater than the current threshold, the telescopic part moves on the linear guide rail through the gear to reduce the elongation of the telescopic part to lower the target height until the current value is no greater than the current threshold. At this time, the height of the lightning arrester is the safe height.

[0015] The maximum extension of the telescopic portion is no greater than the length of the linear guide rail.

[0016] The present invention provides a lightning arrester for a radio and television signal transmission tower, which can detect the current value flowing through the lightning arrester after a lightning strike in real time by integrating a high-precision detection component device, and can intuitively judge whether the lightning arrester has effectively played a protective role by comparing the current value with a preset current threshold through an analysis component. The telescopic part can automatically adjust the height of the lightning arrester according to the instructions of the analysis component to adapt to lightning strikes of different intensities. The adaptive adjustment mechanism of the present invention improves the flexibility of the lightning arrester, ensuring that it can provide effective protection under various lightning strike conditions, thereby effectively improving the safety of the lightning arrester.

[0017] Furthermore, the improved lightning arrester significantly enhances the stability and wind pressure resistance of the overall structure by optimizing the structure of the fixed part and the supporting part, such as adding ribs, auxiliary support rods and suspended dampers, which helps to maintain the normal operation of the lightning arrester under extreme weather conditions, thereby further improving the safety of the lightning arrester.

[0018] Furthermore, the automated and intelligent detection and adjustment mechanism reduces the need for manual intervention and reduces operation and maintenance costs. At the same time, through real-time detection and data analysis, problems can be located and solved more quickly, thus further improving the safety of lightning protection devices.

[0019] Furthermore, by precisely adjusting the height of the lightning arrester, equipment damage caused by excessive discharge is avoided, and the service life of the lightning arrester is extended. In addition, reasonable structural design also helps to reduce equipment aging caused by factors such as wind pressure and corrosion, thereby further improving the safety of the lightning arrester. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural block diagram of a lightning protection device for a radio and television signal transmission tower in an embodiment of the present invention; Figure 2 It is a structural schematic diagram of a lightning protection device for a radio and television signal transmission tower in an embodiment of the present invention; Figure 3 is a schematic diagram of the internal structure of the support part in an embodiment of the present invention; Figure 4 This is a schematic diagram of the outer structure of the support portion in an embodiment of the present invention; Figure 5 It is a partially enlarged schematic diagram of the connection method between the telescopic part and the supporting part in the embodiment of the present invention; Among them, 1 is a lightning arrester, 2 is a telescopic part, 3 is a supporting part, 4 is a fixed part, 5 is a vertical pole, 6 is an anchor point, 7 is a suspended damper, 8 is an auxiliary supporting rod, 9 is a cross rod, 10 is a cross rod, 11 is a gear, and 12 is a linear guide rail. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In order to better understand the present invention, the terms in the present invention are explained below: Lightning terminal: The lightning terminal is located at the top of the lightning protection device. It refers to the lightning rod, lightning strip (wire), lightning net that directly receives lightning strikes, as well as the metal roof and metal components used as lightning terminals. It has a good electrical connection with the down conductor and grounding device. Its function is to use its protruding part above the protected object to guide lightning to itself and receive direct lightning discharge. When lightning directly hits the lightning terminal, the lightning current will quickly discharge from the lightning terminal itself through the down conductor and grounding device to the earth, thereby protecting the building and the electrical equipment inside the building.

[0025] Tip discharge: When a thundercloud approaches, objects on the ground induce opposite charges. The tip of the lightning rod has a small curvature and a large charge density, which increases the electric field strength until the air breaks down, forming a conductive channel that slowly releases the cloud charge and protects buildings from lightning strikes.

[0026] Damper: Generally composed of a counterweight and a sling, it is similar to a giant pendulum. When strong winds hit, the building will shake, and the counterweight of the wind damper will remain relatively still or move in the opposite direction of the building's shaking due to inertia, thereby offsetting the wind force and reducing the building's shaking amplitude.

[0027] See also Figure 1 as well as Figure 2 As shown, the lightning protection device for a radio and television signal transmission tower provided by the present invention comprises: Lightning terminal 1; The fixing part 4 is used to maintain the overall stability of the lightning protection device; A supporting portion 3 connected to the fixing portion 4 and used for vertically supporting the lightning arrester to a target height; A detection component connected to the lightning receptor 1 and used to obtain a current value flowing through the lightning receptor 1 when the lightning receptor 1 is in tip discharge; An analysis component connected to the detection component is used to compare the current value with the corresponding current threshold value and determine whether to adjust the target height of the lightning arrester according to the comparison result; The telescopic part 2 is connected to the lightning receptor 1, the supporting part 3 and the analysis component respectively, and is used to respond to the analysis component to adjust the height of the lightning receptor 1 to a safe height; The safe height is the height at which the lightning receptor 1 is located when the current value flowing through the lightning receptor 1 is not greater than the current threshold.

[0028] In a specific embodiment, the lightning receptor 1 is made of copper or stainless steel and has a pointed shape to maximize its conductive efficiency and tip discharge effect in lightning weather. At the same time, a conductive coating is provided on the top of the lightning receptor 1 to enhance its ability to attract and conduct lightning.

[0029] Furthermore, the fixing part 4 is made of high-strength steel to ensure the stability of the lightning protection device under extreme weather conditions. At the same time, it is designed to be fixed by anchor bolts, which is convenient for installation on the top of a building or on the ground.

[0030] Furthermore, the support part 3 is a steel column, which is connected to the fixing part 4 by welding or bolts. A linear guide rail is arranged inside the column to facilitate the upward and downward movement of the telescopic part and adjust the height of the lightning arrester.

[0031] Furthermore, the detection component uses a high-precision current sensor, which is directly connected to the conductive part of the lightning arrester to detect the current value flowing through in real time. The sensor transmits the data to the analysis component via wired or wireless means.

[0032] Furthermore, the analysis component is equipped with a microprocessor, which receives the current data of the detection component and compares it with a preset current threshold. It is understood that the current threshold is set according to factors such as the type of building, geographical location, and the frequency of lightning activity. When the current value exceeds the threshold, the analysis component sends an adjustment instruction to the telescopic part.

[0033] Furthermore, the telescopic part 2 is composed of an electric or hydraulic drive system, which responds to the command of the analysis component and automatically adjusts the height of the lightning receptor. During the adjustment process, the telescopic part 2 ensures that the lightning receptor moves smoothly to avoid impact on the building.

[0034] In a specific embodiment, the support rod is also provided with a connection point or a clamp for connecting a grounding wire or a lead. The grounding wire is a conductor connecting a lightning arrester (such as a lightning rod) and the earth. Its main function is to safely conduct lightning current to the earth to prevent lightning from causing damage to equipment and people. One end of the grounding wire is usually connected to the grounding terminal of the lightning arrester (such as the bottom of the lightning rod). The other end is buried deep underground to form a good electrical connection with the earth.

[0035] In the above steps, the high-precision sensor used in the above detection component can be implemented by any technical form in the prior art, such as a Hall closed-loop current sensor, which will not be described in detail here.

[0036] In the above steps, the present invention provides a radio and television signal transmission tower lightning arrester, which can detect the current value flowing through the lightning arrester after being struck by lightning in real time by integrating a high-precision detection component device, and can intuitively judge whether the lightning arrester has effectively played a protective role by comparing the current value with the preset current threshold through the analysis component. The telescopic part can automatically adjust the height of the lightning rod according to the instructions of the analysis component to adapt to lightning strikes of different intensities. The adaptive adjustment mechanism of the present invention improves the flexibility of the lightning arrester, ensuring that it can provide effective protection under various lightning strike conditions, thereby effectively improving the safety of the lightning arrester.

[0037] Furthermore, the improved lightning arrester significantly enhances the stability and wind pressure resistance of the overall structure by optimizing the structure of the fixed part and the supporting part, such as adding ribs, auxiliary support rods and suspended dampers, which helps to maintain the normal operation of the lightning arrester under extreme weather conditions, thereby further improving the safety of the lightning arrester.

[0038] Furthermore, the automated and intelligent detection and adjustment mechanism reduces the need for manual intervention and reduces operation and maintenance costs. At the same time, through real-time detection and data analysis, problems can be located and solved more quickly, thus further improving the safety of lightning protection devices.

[0039] Furthermore, by precisely adjusting the height of the lightning arrester, equipment damage caused by excessive discharge is avoided, and the service life of the lightning arrester is extended. In addition, reasonable structural design also helps to reduce equipment aging caused by factors such as wind pressure and corrosion, thereby further improving the safety of the lightning arrester.

[0040] See also Figure 3 As shown, the fixing part includes a flange part and a rib plate, specifically: The flange is connected to the ground through a preset hole to maintain the overall stability of the lightning protection device; Four ribs are provided at the top of the flange and welded to the support part to maintain the overall stability of the lightning arrester; Among them, two ribs are arranged symmetrically in the transverse direction, and the remaining two ribs are arranged symmetrically in the longitudinal direction.

[0041] In detail, the flange and the ribs are usually made of high-strength, corrosion-resistant materials, such as stainless steel or high-quality carbon steel, to ensure their long-term durability in harsh environments. It is understandable that when the above-mentioned flange and ribs are implemented, first, according to the design requirements of the lightning arrester, threaded holes matching the holes of the flange are pre-drilled on the ground, and then the flange is accurately aligned with the holes and the bolts are tightened to firmly fix it on the ground. Next, the support part and the rib are precisely docked and welded to ensure that the welding quality complies with GB985-88 and GB986-88, thereby forming a stable and durable lightning arrester infrastructure.

[0042] The flange is fixed to the ground by threaded connection through preset holes, ensuring the overall stability of the lightning arrester. This connection method is not only simple and reliable, but also easy to install and maintain. At the top of the flange, four ribs are carefully designed, two of which are horizontally symmetrical and the other two are vertically symmetrical. These ribs are closely connected to the support part by welding, further enhancing the structural stability and wind pressure resistance of the lightning arrester.

[0043] See also Figure 3 and Figure 4As shown, the support portion includes a vertical rod 5 and an auxiliary support rod 8, specifically: A suspension damper 7 is provided inside the vertical pole 5. The auxiliary support rod 8 is arranged outside the vertical rod 5 , arranged in a forward cone shape and connected to the vertical rod 5 .

[0044] A cross bar 9 and a cross bar 10 are arranged between two adjacent auxiliary support bars 8 .

[0045] The specific arrangement of the suspension damper 7 inside the vertical pole 5 is as follows: Two anchor points 6 symmetrically arranged on the inner wall of the upright pole 5 pull two cables to connect the suspension damper 7 .

[0046] The suspension damper 7 is suspended inside the vertical pole 5; The maximum swing amount of the suspension damper 7 is smaller than the minimum distance between the suspension damper 7 and the inner wall 5 of the vertical pole.

[0047] In a specific embodiment, the support portion is mainly composed of a vertical pole 5 and an auxiliary support pole 8. The vertical pole 5 is made of high-strength steel to ensure that it has sufficient bearing capacity and stability. A suspension damper 7 is installed inside the vertical pole 5. The suspension damper 7 is made of high-quality alloy material and has a mass of about 150 tons, which not only ensures the damping effect, but also ensures durability and reliability under long-term use. The suspension damper 7 is suspended and fixed by two high-strength cables pulled by two high-strength anchor points 6 symmetrically arranged on the inner wall of the vertical pole 5. These two cables are also made of high-strength alloy materials such as galvanized steel cables to ensure that they can withstand the huge pulling force generated by the suspension damper 7 when it swings.

[0048] It should be clear that the weight of the suspension damper 7 is not fixed, but is determined according to the specific structure and size of the lightning arrester, the wind load conditions of the environment, and the design objectives (such as the degree of vibration reduction, the requirements for improving stability, etc.). For example, for a lightning arrester with a total mass of about 1,000 tons and a height of 30 meters, the corresponding suspension damper 7 is set to have a mass of 150 tons.

[0049] See also Figure 5 As shown, the telescopic part is connected to the linear guide rail 12 provided on the inner wall of the vertical pole through a gear 11, and the telescopic part is driven by the gear 12 to raise and lower the telescopic part to adjust the height of the lightning receptor; The diameter of the telescopic part is smaller than the diameter of the vertical pole.

[0050] The analysis component compares the current value with the corresponding current threshold to determine whether to adjust the target height of the lightning arrester, specifically: Analyze components to compare current values ​​and current thresholds; Wherein, if the current value is not greater than the current threshold, the analysis component remains silent; If the current value is greater than the current threshold, the analysis component sends a telescopic instruction to the telescopic part.

[0051] In practice, according to the relevant records of GB 50057-2010 "Building Lightning Protection Design Code" and GB / T21431-2023 "Building Lightning Protection Device Testing Technical Specifications" in the prior art, when the lightning arrester is working normally, the current flowing through it is usually small, usually between 0 and 100mA. Therefore, the corresponding current threshold is set to 120mA.

[0052] It is understandable that, due to the variety of types and specifications of lightning arresters, the current threshold value flowing through them will also vary depending on the specific situation. Therefore, in practical applications, it is necessary to determine the appropriate current threshold value based on the specifications and performance of the lightning arrester and the characteristics of the protected equipment.

[0053] The telescopic part responds to the telescopic instruction specifically as follows: When the current value is greater than the current threshold, the telescopic part moves on the linear guide rail through the gear to reduce the elongation of the telescopic part to lower the target height until the current value is no greater than the current threshold. At this time, the height of the lightning arrester is a safe height.

[0054] The maximum extension of the telescopic portion is no greater than the length of the linear guide rail.

[0055] Exemplarily, the length of the linear guide rail is 5m, the elongation of the telescopic part is 0-5m, and the maximum elongation is 5m; the length of the linear guide rail is 8m, the elongation of the telescopic part is 0-6m, and the maximum elongation is 6m.

[0056] It can be understood that when the telescopic part is extended through gear transmission, the length it increases relative to when it is not extended is the elongation. The change in the height of the above-mentioned lightning receptor is the same as the change in the elongation of the above-mentioned telescopic part, specifically: when the telescopic part is extended through gear transmission, the height of the above-mentioned lightning receptor increases; when the telescopic part is compressed through gear transmission, the height of the above-mentioned lightning receptor decreases.

[0057] In an actual application scenario, the target height of the lightning rod is 35m, and the extension of the telescopic part is 5m; when the lightning rod is at a height of 35m, when its tip discharges, the current flowing through it is 120mA, which is greater than its corresponding current threshold of 100mA. Therefore, it is necessary to adjust the target height of the lightning rod, that is, to adjust the extension of the telescopic part; when the extension of the telescopic part is reduced to 1m, the current flowing through the lightning rod is 90mA, which is less than the current threshold of 100mA. At this time, the height of the lightning rod is 31m, which is the safe height of the lightning rod.

[0058] In addition, during implementation, the multi-stage surge protector can be used in combination with a lightning arrester to enhance the overall lightning protection effect. According to experimental data, the multi-stage surge protector performs well in the voltage range of 300V to 3500V and can effectively reduce the residual voltage. This is highly overlapped with the applicable voltage range of the lightning arrester of the present invention in implementation. Within this voltage range, as the impulse voltage increases, the residual voltage and current values ​​after the multi-stage surge protector and the grounding device continue to increase, but the increase in the residual voltage value is small and increases linearly.

[0059] Lightning protection devices, such as lightning rods or lightning strips, are usually installed on the top of buildings or parts susceptible to lightning strikes to guide lightning current to safely discharge into the earth. Multi-level surge protectors are installed at the entrance of power or signal lines as a second line of defense after lightning current enters the building. When lightning strikes a building or nearby area, the lightning protection device first guides the lightning current to discharge into the earth, while the multi-level surge protector further limits the lightning overvoltage entering the building to ensure the safe operation of the power and signal systems. In the lightning protection measures for signal transmission tower shared equipment, multi-level surge protectors and lightning protection devices are closely linked to form an efficient protection system. Multi-level surge protectors achieve step-by-step limitation of instantaneous overvoltages on power lines and signal transmission lines by connecting nonlinear suppression elements of different levels in series, while lightning protection devices are responsible for introducing lightning into the ground to prevent it from causing direct damage to the equipment. In actual applications, multi-stage surge protectors are usually used in conjunction with lightning arresters. Through the guidance of lightning arresters, lightning energy is safely directed into the underground. At the same time, multi-stage surge protectors further absorb and suppress overvoltage to ensure the safe and stable operation of transmission tower shared equipment.

[0060] The components involved in the embodiments described in this application can be implemented by hardware or software. The components described can also be set in a system, for example, it can be described as: a lightning protection system for a radio and television signal transmission tower includes a fixing unit, a supporting unit, a detection unit, and an analysis unit, wherein the names of these units do not constitute a limitation on the components themselves in some cases.

[0061] The flowchart and block diagram in the accompanying drawings illustrate the system architecture, functions and operations that may be implemented according to the system and method of various embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, and the combination of boxes in the block diagram and / or flowchart can be implemented with a dedicated hardware-based device that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0062] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lightning protection device for a radio and television signal transmission tower, characterized in that: include: Lightning arrester; The fixing part is used to maintain the overall stability of the lightning protection device; A supporting portion, connected to the fixing portion, and used to vertically support the lightning receptor to a target height; A detection component connected to the lightning receptor, and used to obtain a current value flowing through the lightning receptor when the lightning receptor is in tip discharge; An analysis component connected to the detection component, used for comparing the current value with a corresponding current threshold, and determining whether to adjust the target height of the lightning receptor according to the comparison result; A telescopic portion, which is respectively connected to the lightning receptor, the supporting portion and the analysis component, and is used to respond to the analysis component to adjust the height of the lightning receptor to a safe height; The safe height is the height at which the lightning receptor is located when the current value flowing through the lightning receptor is not greater than the current threshold.

2. The lightning protection device for a radio and television signal transmission tower according to claim 1 is characterized in that: The fixing portion includes a flange portion and a rib plate, specifically: The flange is connected to the ground through a preset hole to maintain the overall stability of the lightning protection device; The top of the flange portion is provided with four ribs welded to the support portion to maintain the overall stability of the lightning protection device; Among them, two of the ribs are arranged symmetrically in the transverse direction, and the remaining two ribs are arranged symmetrically in the longitudinal direction.

3. The lightning protection device for a radio and television signal transmission tower according to claim 2 is characterized in that: The support part includes a vertical rod and an auxiliary support rod, specifically: A suspension damper is provided inside the vertical pole. The auxiliary support rod is arranged outside the vertical rod, arranged in a positive cone shape and connected to the vertical rod.

4. The lightning protection device for a radio and television signal transmission tower according to claim 3 is characterized in that: A cross bar and a cross bar are arranged between two adjacent auxiliary support bars.

5. The lightning protection device for a radio and television signal transmission tower according to claim 4 is characterized in that: The specific arrangement of the suspension damper inside the vertical pole is as follows: Two anchor points symmetrically arranged on the inner wall of the upright pole pull two cables to connect the suspension damper.

6. The lightning protection device for a radio and television signal transmission tower according to claim 5, characterized in that: The suspended damper is suspended inside the vertical pole; Wherein, the maximum swing amount of the suspension damper is smaller than the minimum distance between the suspension damper and the inner wall of the vertical pole.

7. The lightning protection device for a radio and television signal transmission tower according to claim 6, characterized in that: The telescopic part is connected to the linear guide rail provided on the inner wall of the vertical pole through gears, and the telescopic part is raised and lowered through gear transmission to adjust the height of the lightning receptor; Wherein, the diameter of the telescopic part is smaller than the diameter of the vertical pole.

8. The lightning protection device for a radio and television signal transmission tower according to claim 7, characterized in that: The analysis component compares the current value with the corresponding current threshold to determine whether to adjust the target height of the lightning receptor, specifically: The analyzing component compares the current value with the current threshold; Wherein, if the current value is not greater than the current threshold, the analysis component remains silent; If the current value is greater than the current threshold, the analysis component sends a telescoping instruction to the telescoping portion.

9. The lightning protection device for a radio and television signal transmission tower according to claim 8, characterized in that: The telescopic unit responds to the telescopic instruction specifically as follows: When the current value is greater than the current threshold, the telescopic part moves on the linear guide rail through the gear to reduce the elongation of the telescopic part to lower the target height until the current value is no greater than the current threshold. At this time, the height of the lightning arrester is the safe height.

10. The lightning protection device for a radio and television signal transmission tower according to claim 9, characterized in that: The maximum extension of the telescopic portion is no greater than the length of the linear guide rail.

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