Lightning protection device for outdoor power distribution cabinet

Abstract

The invention relates to the technical field of power distribution cabinet protection, in particular to an outdoor power distribution cabinet lightning protection device which comprises a top plate fixedly connected to a power distribution cabinet, a lightning protection mechanism comprises a protection sleeve fixedly connected to the top plate, a base is slidably connected into the protection sleeve, a lightning rod is fixedly connected to the base, and a cover plate is movably installed on the protection sleeve. The protection sleeve is provided with an extending assembly used for moving out the lightning rod, the extending assembly comprises sliding rails obliquely installed on the two sides of the protection sleeve, a frame is fixedly connected to the sliding rails, a balancing weight used for pulling the lightning rod to ascend is slidably connected to the sliding rails, the end of the connecting rope extends into the protection sleeve and is connected with the balancing weight, and a U-shaped frame is slidably connected to the sliding rails; a check block located at the bottom of the U-shaped frame is arranged in the sliding rail, the check block is controlled to be separated from the U-shaped frame through the air pressure, and a shifting mechanism for driving the cover plate to move through electrostatic force is arranged on the top plate. According to the invention, the lightning rod can automatically come out of the protection sleeve, and lightning protection measures are taken to protect the power distribution cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinet protection, and specifically to a lightning protection device for outdoor power distribution cabinets. Background Art

[0002] As a key outdoor node of the power system, outdoor power distribution cabinets are faced with lightning strike risks for a long time. Traditional lightning rods, due to being exposed to the outdoor environment for a long time, are affected by wind and rain erosion and mechanical collisions (such as bird perching and foreign object impact), and are prone to problems such as tip passivation and metal corrosion, resulting in a decrease in lightning attraction efficiency; and using a lifting device to extend and retract the lightning rod depends on electric, hydraulic and other drive-type lifting structures powered by external power sources or air sources, and is prone to failure under power grid fluctuations, power outages or extreme climates (such as increased viscosity of hydraulic oil caused by low temperature and abnormal air pressure) caused by lightning strikes. Electronic control components are prone to being damaged by interference in a strong electromagnetic environment; and relying on a single meteorological parameter (such as electric field intensity or air pressure change) to trigger, non-thunderstorm factors such as industrial static electricity discharge and ordinary weather fluctuations are prone to cause misjudgment, resulting in frequent ineffective actions of the lightning rod and accelerating mechanical wear. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a lightning protection device for outdoor power distribution cabinets, which has the advantage of protecting the lightning rod and solves the problem of the lightning rod being exposed to the outdoor environment for a long time.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: A lightning protection device for outdoor power distribution cabinets includes a top plate fixedly connected to the power distribution cabinet. A lightning protection mechanism is provided on the power distribution cabinet. The lightning protection mechanism includes a protective sleeve fixedly connected to the top plate. A base is slidably connected inside the protective sleeve. A lightning rod is fixedly connected to the base. A cover plate is movably installed on the protective sleeve. An extending component for extending out the lightning rod is provided on the protective sleeve. The extending component includes slide rails obliquely installed on both sides of the protective sleeve. A frame is fixedly connected to the slide rails. A counterweight block for pulling the lightning rod to rise is slidably connected to the slide rails. A connecting rope is fixedly connected to the counterweight block. The end of the connecting rope extends into the protective sleeve and is connected to the counterweight block. Shells are fixedly connected to both sides of the protective sleeve. A U-shaped frame is slidably connected between the slide rails and the shells. The U-shaped frame is placed upside down. A stop block is provided at the bottom of the U-shaped frame inside the slide rail. The stop block is controlled to disengage from the U-shaped frame by air pressure. A displacement mechanism for driving the cover plate to move by electrostatic force is provided on the top plate.

[0005] Preferably, a partition plate is fixedly connected inside the shell. A spring is fixedly connected between the partition plate and the stop block. A U-shaped rod is fixedly connected to the stop block. The U-shaped rod is inclined. A diaphragm-type air pressure sensor is fixedly connected to the bottom of the shell. A diaphragm is provided on the diaphragm-type air pressure sensor. The diaphragm is in contact with the end of the U-shaped rod.

[0006] Preferably, the U-shaped rod is slidably connected to the partition board, and the U-shaped frame is slidably connected to the bottom of the slide rail through a chute.

[0007] Preferably, a transmission shaft is rotatably installed on the top plate. A connecting strip fixedly connected to the cover plate is sleeved on the transmission shaft. A plurality of fan blades are fixedly connected to the transmission shaft. The plurality of fan blades are annularly distributed. A support is fixedly connected to the top plate. A metal induction plate is inclinedly installed on the support. A magnetic block corresponding to the metal induction plate is fixedly connected to the fan blade. A stop post for blocking the cover plate is fixedly connected to the top plate.

[0008] Preferably, the connecting rope is in an inverted U shape, and the highest point of the connecting rope is located at the top of the protective sleeve.

[0009] Preferably, a housing is fixedly connected to the power distribution cabinet. A first motor is fixedly installed in the housing. A transmission roller is fixedly connected to the output shaft of the first motor. A transmission rope for pulling the lightning rod on the base to reset is connected to the transmission roller. The end of the transmission rope extends into the protective sleeve and is connected to the base.

[0010] Preferably, a support seat is fixedly connected to the frame body. An electric push rod is fixedly installed on the support seat. A transmission bar for pushing the U-shaped frame to reset is fixedly connected to the free end of the electric push rod.

[0011] Preferably, a spur gear is fixedly connected to the bottom end of the transmission shaft. A second motor is fixedly installed at the bottom of the top plate. An incomplete gear corresponding to the spur gear is fixedly connected to the output end of the second motor. The rotation of the transmission shaft drives the cover plate on the connecting strip to reset.

[0012] Preferably, a stop bar is fixedly connected to the lightning rod, and the top end of the stop bar is located above the highest point of the lightning rod.

[0013] Preferably, a controller is installed on the power distribution cabinet, and the controller is located below the top plate.

[0014] By means of the above technical solution, the present invention provides a lightning protection device for outdoor power distribution cabinets, which at least has the following beneficial effects: 1. For this lightning protection device for outdoor power distribution cabinets, the counterweight slides into the frame body, and then the counterweight will pull the connecting rope to drive the base to rise. The lightning rod rises with the base, so that the lightning rod can automatically come out of the protective sleeve to carry out lightning protection measures to protect the power distribution cabinet.

[0015] 2. For this lightning protection device for outdoor power distribution cabinets, dozens of minutes to several hours before a thunderstorm cloud forms, the electrostatic field intensity near the ground will be significantly increased in advance. At this time, the cover plate will be moved away in advance to facilitate the extension of the lightning rod. There is no need for an external power supply or an internal battery, which avoids the protection failure caused by power interruption and ensures that the lightning rod can still rely on the energy of the natural environment to complete the extension action in a completely power-off scenario.

[0016] 3. For the lightning protection device of the outdoor power distribution cabinet, abnormal changes in air pressure will cause the diaphragm on the diaphragm-type air pressure sensor to deform. When the middle of the diaphragm protrudes, it will cause the U-shaped rod in contact with it to move outward. Subsequently, the U-shaped rod drives the block to move away from the U-shaped frame, and the counterweight can move away normally. The trigger signal can avoid false operations in non-thunderstorm weather (such as ordinary wind and rain), improving the accuracy of the lightning rod extending.

[0017] 4. For the lightning protection device of the outdoor power distribution cabinet, it converts air pressure changes into mechanical displacement through a pure mechanical structure, without the need for an external power source, and can still work reliably in extreme situations such as power outages caused by lightning, improving the stability of the device in harsh environments.

[0018] 5. For the lightning protection device of the outdoor power distribution cabinet, it relies on the electromagnetic energy in the natural environment to work normally, ensuring that the cover plate can be moved away in a timely manner in extreme situations, allowing the lightning rod to extend for lightning protection, and improving the reliability of the entire lightning protection device.

[0019] 6. For the lightning protection device of the outdoor power distribution cabinet, the simultaneous satisfaction of the two can accurately distinguish real thunderstorm scenarios from single-factor interferences (such as ordinary wind and rain, industrial static electricity, or accidental air pressure fluctuations), avoiding mechanical losses caused by false triggering of the device, ensuring that the lightning rod only responds quickly when truly needed, and improving the anti-interference ability of the system through conditional interlocking, while ensuring the lightning protection effectiveness and extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and form a part of this application: Figure 1 It is a three-dimensional structure schematic diagram of the present invention; Figure 2 It is a structure schematic diagram of the lightning protection mechanism of the present invention; Figure 3 It is a structure schematic diagram of the external connection of the counterweight of the present invention; Figure 4 For the present invention Figure 3 An enlarged view of part A; Figure 5 It is a side view of the present invention; Figure 6 It is a structure schematic diagram of the displacement mechanism of the present invention.

[0021] Reference Signs: 100, top plate; 101, controller; 200, Lightning protection mechanism; 201, Protective sleeve; 202, Lightning rod; 203, Cover plate; 204, Base; 205, Stop bar; 206, Extending component; 2061, Slide rail; 2062, Counterweight; 2063, Connecting rope; 2064, Frame; 2065, Outer shell; 2066, U-shaped bracket; 2067, Stop block; 2068, Partition board; 2069, Spring; 20610, U-shaped rod; 20611, Diaphragm type air pressure sensor; 20612, Diaphragm; 207, Housing; 208, Motor 1; 209, Driving roller; 210, Driving rope; 211, Support base; 212, Electric push rod; 213, Driving bar; 300, Shifting mechanism; 301, Transmission shaft; 302, Connecting bar; 303, Metal induction electrode plate; 304, Fan blade; 305, Magnetic block; 306, Straight gear; 307, Motor 2; 308, Incomplete gear; 309, Stop post. Detailed implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Outdoor power distribution cabinets are vulnerable to lightning strikes, and it is difficult for workers to carry out maintenance during thunderstorms. Fixed lightning rods are prone to damage after being exposed to wind and rain for a long time. Electric ones require an external power supply and will malfunction when the power is cut off. Moreover, they are prone to jamming in low or high temperatures; in addition, current devices are prone to misjudgment. For example, industrial static electricity or ordinary wind and rain will also cause the lightning rod to extend and retract randomly, resulting in wear of mechanical components; complex mechanical structures are also prone to rusting and jamming. Therefore, a new lightning protection device that is more reliable, does not rely on electricity, and has fewer failures is needed.

[0024] Embodiment 1: Combined with Figures 1-4 As shown, the outdoor power distribution cabinet lightning protection device provided by the present invention includes a top plate 100 fixedly connected to the power distribution cabinet, and a lightning protection mechanism 200 is provided on the power distribution cabinet; The lightning protection mechanism 200 includes a protective sleeve 201 fixedly connected to the top plate 100. A base 204 is slidably connected inside the protective sleeve 201. A lightning rod 202 is fixedly connected to the base 204. A cover plate 203 is movably installed on the protective sleeve 201. The protective sleeve 201 is provided with an extension assembly 206 for extending out the lightning rod 202. The extension assembly 206 includes slide rails 2061 obliquely installed on both sides of the protective sleeve 201. A frame 2064 is fixedly connected to the slide rails 2061. A counterweight 2062 for pulling the lightning rod 202 to rise is slidably connected to the slide rails 2061. Outer shells 2065 are fixedly connected to both sides of the protective sleeve 201. A U-shaped frame 2066 is slidably connected between the slide rails 2061 and the outer shells 2065. The end of a connecting rope 2063 extends into the protective sleeve 201 and is connected to the counterweight 2062. A U-shaped frame 2066 is slidably connected to the slide rails 2061. The U-shaped frame 2066 is placed upside down. A stop block 2067 is provided at the bottom of the U-shaped frame 2066 inside the slide rails 2061. The stop block 2067 is controlled to disengage from the U-shaped frame 2066 by the air pressure. In normal weather, the lightning rod 202 is inside the protective sleeve 201, which can protect the lightning rod 202 from being damaged by other factors. In thunderstorm weather, the formation of a thunderstorm (a strong convective weather accompanied by thunder) requires specific meteorological conditions, and among them, the air pressure will change abnormally. At this time, the stop block 2067 will move away from the bottom of the U-shaped frame 2066, and then the U-shaped frame 2066 will slide downward through the chute, so that the U-shaped frame 2066 moves away from the counterweight 2062. Subsequently, the counterweight 2062 slides into the frame 2064, and then the counterweight 2062 will pull the connecting rope 2063 to drive the base 204 to rise, and the lightning rod 202 rises with the base 204, so that the lightning rod 202 can automatically come out of the protective sleeve 201 to carry out lightning protection measures to protect the power distribution cabinet; Thunderstorm weather may be accompanied by power grid fluctuations or even power outages. Using electricity as the power source will cause the lightning rod 202 to be unable to conduct electricity normally. To solve the above problems, a displacement mechanism 300 for driving the cover plate 203 to move by electrostatic force is provided on the top plate 100. The setting of the cover plate 203 can block the lightning rod 202 from going out when the electrostatic force does not change. Dozens of minutes to several hours before the formation of a thunderstorm cloud, the electrostatic field intensity near the ground will increase significantly. At this time, the cover plate 203 will be moved away in advance to facilitate the extension of the lightning rod 202. There is no need for an external power supply or an internal battery, which can avoid the protection failure caused by power interruption and ensure that the lightning rod 202 can still rely on the energy of the natural environment to complete the extension action in a completely power-off scenario.

[0025] The air pressure balance on both sides of the diaphragm 20612 is broken. The diaphragm 20612 will bend or bulge towards the side with lower pressure due to the pressure difference on both sides, resulting in deformation. And the air pressure is in a significant and dynamic change process. A partition 2068 is fixedly connected inside the housing 2065. A spring 2069 is fixedly connected between the partition 2068 and the stopper 2067. A U-shaped rod 20610 is fixedly connected to the stopper 2067. The U-shaped rod 20610 is arranged in an inclined manner. A diaphragm-type air pressure sensor 20611 is fixedly connected to the bottom of the housing 2065. A diaphragm 20612 is provided on the diaphragm-type air pressure sensor 20611. The diaphragm 20612 is in contact with the end of the U-shaped rod 20610. Abnormal changes in air pressure will cause the diaphragm 20612 on the diaphragm-type air pressure sensor 20611 to deform. When the middle of the diaphragm 20612 protrudes, it will cause the U-shaped rod 20610 in contact with it to move outward. Subsequently, the U-shaped rod 20610 drives the stopper 2067 to move away from the U-shaped frame 2066, and the counterweight 2062 can be normally removed. Abnormal air pressure is one of the key precursors for the formation of thunderstorms. Using this as a trigger signal can avoid false operations in non-thunderstorm weather (such as ordinary wind and rain), and improve the accuracy of the lightning rod 202 extending.

[0026] Furthermore, the U-shaped rod 20610 is slidably connected to the partition 2068. The U-shaped frame 2066 is slidably connected to the bottom of the slide rail 2061 through a chute. The two ends of the U-shaped frame 2066 are slidably connected to the bottom of the slide rail 2061, while the body of the U-shaped frame 2066 is slidably connected to the upper part of the slide rail 2061 through a chute, enabling the U-shaped frame 2066 to move up and down on the slide rail 2061 and not break away from the slide rail 2061.

[0027] According to the embodiment, the air pressure change is converted into mechanical displacement through a pure mechanical structure without an external power source, and it can still work reliably in extreme situations such as power outages caused by lightning, improving the stability of the device in harsh environments.

[0028] Embodiment Two: Traditional mechanisms need to be externally powered (mains electricity, battery) or internally powered by a battery. If there is a power outage, battery depletion, or line short circuit (such as overvoltage caused by lightning strike), the mechanism may fail. To solve the above problems, combined with Figure 5 and Figure 6As shown in the figure, on the basis of the first embodiment, a transmission shaft 301 is rotatably installed on the top plate 100. A connecting strip 302 fixedly connected to the cover plate 203 is sleeved on the transmission shaft 301. A plurality of fan blades 304 are fixedly connected to the transmission shaft 301. The plurality of fan blades 304 are annularly distributed. A support is fixedly connected to the top plate 100. A metal induction plate 303 is inclinedly installed on the support. A magnet 305 corresponding to the metal induction plate 303 is fixedly connected to the fan blade 304. A stop post 309 for blocking the cover plate 203 is fixedly connected to the top plate 100. During a thunderstorm, the high-frequency strong electromagnetic field generated by lightning causes the metal induction plate 303 to induce a changing electromotive force. The metal induction plate 303 acts as a conductor to generate an induced current (eddy current). The magnetic field generated by the current interacts with the magnetic field of the magnet 305. According to Lenz's law, the induced magnetic field hinders the change of magnetic flux, thereby generating a reverse thrust on the magnet 305. Due to the inclined installation of the metal induction plate 303, the thrust decomposes into a continuous tangential component force, driving the fan blade 304 to drive the transmission shaft 301 to rotate. Subsequently, the transmission shaft 301 moves the cover plate 203 away from the protective sleeve 201, and the stop post 309 can prevent the cover plate 203 from moving excessively and returning to its original position.

[0029] Specifically, the connecting rope 2063 is in an inverted U shape, and the highest point of the connecting rope 2063 is located at the top of the protective sleeve 201, which can move the lightning rod 202 to a certain height for normal lightning protection operations.

[0030] According to the embodiment, it works normally relying on the electromagnetic energy in the natural environment, ensuring that the cover plate 203 can still be moved away in a timely manner in extreme cases, allowing the lightning rod 202 to extend for lightning protection, and improving the reliability of the entire lightning protection device.

[0031] Embodiment Three: After the thunderstorm weather has passed, in order to ensure continuous protection of the lightning rod 202, combined with Figure 5 and Figure 6As shown in the figure, on the basis of the first embodiment, a housing 207 is fixedly connected to the power distribution cabinet. A first motor 208 is fixedly installed inside the housing 207. A transmission roller 209 is fixedly connected to the output shaft of the first motor 208. A transmission rope 210 for pulling the lightning rod 202 to reset is connected to the transmission roller 209. The end of the transmission rope 210 extends into the protective sleeve 201 and is connected to the base 204. When the first motor 208 is started to drive the transmission roller 209 to rotate, the rotation of the transmission roller 209 can wind the transmission rope 210, pulling the lightning rod 202 on the base 204 to reset. At the same time, the base 204 also pulls the counterweight 2062 to reset through the connecting rope 2063. Subsequently, the U-shaped frame 2066 rises to block the counterweight 2062, and the spring 2069 pushes the stopper 2067 to insert it into the bottom of the U-shaped frame 2066, completing the reset of the base 204 and the lightning rod 202. Subsequently, the first motor 208 is started to drive the transmission roller 209 to reverse, so that the transmission rope 210 is in a loose state, and then the base 204 and the lightning rod 202 can rise normally.

[0032] A support seat 211 is fixedly connected to the frame body 2064. An electric push rod 212 is fixedly installed on the support seat 211. A transmission bar 213 for pushing the U-shaped frame 2066 to reset is fixedly connected to the free end of the electric push rod 212. The free end of the electric push rod 212 telescopically pushes the transmission bar 213 to move, and the transmission bar 213 contacts the two ends of the U-shaped frame 2066 to push it to reset.

[0033] Further, a spur gear 306 is fixedly connected to the bottom end of the transmission shaft 301. A second motor 307 is fixedly installed at the bottom of the top plate 100. An incomplete gear 308 corresponding to the spur gear 306 is fixedly connected to the output end of the second motor 307. The rotation of the transmission shaft 301 drives the cover plate 203 on the connecting bar 302 to reset. When the second motor 307 is started to drive the incomplete gear 308 to rotate, the incomplete gear 308 contacts the spur gear 306 to drive the transmission shaft 301 to rotate, and the transmission shaft 301 drives the cover plate 203 on the connecting bar 302 to reset.

[0034] According to the embodiment, when the lightning weather ends, the diaphragm 20612 on the diaphragm type air pressure sensor 20611 deforms and recovers. When the gap in the middle of the U-shaped frame 2066 and the stopper 2067 are in the same plane, the spring 2069 will push the stopper 2067 to insert it into the gap to position the U-shaped frame 2066 and prevent the counterweight 2062 from sliding obliquely downward.

[0035] Embodiment Four: Combined with Figure 2 and Figure 5As shown in the figure, on the basis of the first embodiment, a blocking rod 205 is fixedly connected to the lightning rod 202. The top end of the blocking rod 205 is located above the highest point of the lightning rod 202. When the cover plate 203 is not removed, the blocking rod 205 contacts the cover plate 203 first, preventing the lightning rod 202 from directly contacting the cover plate 203 and causing damage to it.

[0036] Specifically, a controller 101 is installed on the power distribution cabinet, and the controller 101 is located below the top plate 100.

[0037] The abnormal change of air pressure is the key meteorological feature of thunderstorm formation (the sudden change of air pressure accompanied by severe convective weather), and the significant increase of electrostatic field intensity is the electromagnetic precursor when the thunderstorm cloud approaches (appearing several hours to dozens of minutes in advance). The simultaneous satisfaction of the two can accurately distinguish the real thunderstorm scenario from single-factor interference (such as ordinary wind and rain, industrial static electricity or accidental air pressure fluctuations), avoiding mechanical losses caused by mis-triggering of the device (such as frequent movement of the counterweight 2062 and repeated opening and closing of the cover plate 203). It not only ensures that the lightning rod 202 responds quickly only when it is really needed, but also improves the anti-interference ability of the system through conditional interlock, while ensuring the lightning protection effectiveness and extending the service life of the equipment.

[0038] As can be seen from the above embodiments: When dealing with lightning, in normal weather, the lightning rod 202 inside the protective sleeve 201, due to the significant increase of electrostatic field intensity near the ground caused by thunderstorm, the metal induction plate 303 induces a changing electromotive force and generates eddy currents in the high-frequency strong electromagnetic field of lightning. The generated magnetic field interacts with the magnetic fields of the fan blade 304 and the magnet 305. The inclined installation of the metal induction plate 303 decomposes the thrust into a continuous tangential component force, driving the fan blade 304 to drive the transmission shaft 301 to rotate, and moving the cover plate 203 away from the protective sleeve 201; at the same time, the abnormal change of air pressure accompanied by thunderstorm deforms the diaphragm 20612 of the diaphragm type air pressure sensor 20611, pushing the U-shaped rod 20610 to drive the block 2067 to move away from the bottom of the U-shaped frame 2066. The U-shaped frame 2066 slides downward through the chute and disengages from the counterweight 2062. The counterweight 2062 slides into the frame 2064 and pulls the connecting rope 2063 to drive the base 204 to rise. The lightning rod 202 extends out of the protective sleeve 201 with the base 204, completing the transformation from the hidden state inside the protective sleeve 201 to the extended state outside, so as to carry out lightning protection measures to protect the power distribution cabinet.

[0039] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Outdoor power distribution cabinet lightning protection device, including a top plate (100) fixedly connected to the power distribution cabinet, characterized in that: A lightning protection mechanism (200) is provided on the power distribution cabinet; The lightning protection mechanism (200) includes a protective sleeve (201) fixedly connected to the top plate (100). A base (204) is slidably connected inside the protective sleeve (201). A lightning rod (202) is fixedly connected to the base (204). A cover plate (203) is movably installed on the protective sleeve (201). The protective sleeve (201) is provided with an extending component (206) for extending the lightning rod (202); The extending component (206) includes slide rails (2061) obliquely installed on both sides of the protective sleeve (201). A frame body (2064) is fixedly connected to the slide rails (2061). A counterweight (2062) for pulling the lightning rod (202) to rise is slidably connected to the slide rails (2061). A connecting rope (2063) is fixedly connected to the counterweight (2062). The end of the connecting rope (2063) extends into the protective sleeve (201) and is connected to the counterweight (2062). Outer shells (2065) are fixedly connected to both sides of the protective sleeve (201). A U-shaped frame (2066) is slidably connected between the slide rails (2061) and the outer shells (2065). The U-shaped frame (2066) is placed upside down. A stop block (2067) located at the bottom of the U-shaped frame (2066) is provided inside the outer shell (2065); A displacement mechanism (300) for driving the cover plate (203) to move by electrostatic force is provided on the top plate (100).

2. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: A partition plate (2068) is fixedly connected inside the outer shell (2065). A spring (2069) is fixedly connected between the partition plate (2068) and the stop block (2067). A U-shaped rod (20610) is fixedly connected to the stop block (2067). The U-shaped rod (20610) is arranged in an inclined manner. A diaphragm type air pressure sensor (20611) is fixedly connected to the bottom of the outer shell (2065). A diaphragm (20612) is provided on the diaphragm type air pressure sensor (20611). The diaphragm (20612) is in contact with the end of the U-shaped rod (20610).

3. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: The U-shaped rod (20610) is slidably connected to the partition plate (2068). The U-shaped frame (2066) is slidably connected to the bottom of the slide rail (2061) through a chute.

4. The lightning protection device for outdoor power distribution cabinets according to claim 1, wherein: A transmission shaft (301) is rotatably installed on the top plate (100). A connecting strip (302) fixedly connected to the cover plate (203) is sleeved on the transmission shaft (301). A plurality of fan blades (304) are fixedly connected to the transmission shaft (301). The plurality of fan blades (304) are annularly distributed. A support is fixedly connected to the top plate (100). A metal induction electrode plate (303) is obliquely installed on the support. A magnetic block (305) corresponding to the metal induction electrode plate (303) is fixedly connected to the fan blade (304). A stop post (309) for blocking the cover plate (203) is fixedly connected to the top plate (100).

5. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: The connecting rope (2063) is in an inverted U shape, and the highest point of the connecting rope (2063) is located at the top position of the protective sleeve (201).

6. The lightning protection device for outdoor power distribution cabinets according to claim 1, wherein: A housing (207) is fixedly connected to the power distribution cabinet. A first motor (208) is fixedly installed inside the housing (207). A transmission roller (209) is fixedly connected to the output shaft of the first motor (208). A transmission rope (210) for pulling the lightning rod (202) on the pulling base (204) to reset is connected to the transmission roller (209). The end of the transmission rope (210) extends into the protective sleeve (201) and is connected to the base (204).

7. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: A support seat (211) is fixedly connected to the frame body (2064). An electric push rod (212) is fixedly installed on the support seat (211). A transmission bar (213) for pushing the U-shaped frame (2066) to reset is fixedly connected to the free end of the electric push rod (212).

8. The lightning protection device for outdoor power distribution cabinets according to claim 4, characterized in that: A spur gear (306) is fixedly connected to the bottom end of the transmission shaft (301). A second motor (307) is fixedly installed at the bottom of the top plate (100). An incomplete gear (308) corresponding to the spur gear (306) is fixedly connected to the output end of the second motor (307). The rotation of the transmission shaft (301) drives the cover plate (203) on the connecting bar (302) to reset.

9. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: A blocking rod (205) is fixedly connected to the lightning rod (202). The top end of the blocking rod (205) is located above the highest point of the lightning rod (202).

10. The lightning protection device for outdoor power distribution cabinets according to claim 1, characterized in that: A controller (101) is installed on the power distribution cabinet. The controller (101) is located below the top plate (100).

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