A drone device for building fire fighting and smoke dispersal

Abstract

This invention discloses a drone device for building fire extinguishing and smoke dispersal, relating to the field of aviation equipment technology. It includes a drone body and a fire extinguisher canister for smoke dispersal and fire extinguishing. A gas delivery assembly is installed on the top of the drone body, including a sealed storage compartment. In this building fire extinguishing and smoke dispersal drone device, to reduce the load on the drone body during fire extinguishing, the fire extinguisher canister is first secured to an airbag with external straps. A mixture of nitrogen and helium, which has fire extinguishing and levitation effects, is then filled into the airbag. Multiple arc-shaped pushers extend the airbag into a boat shape, reducing wind resistance during levitation. The drone body can then be activated, carrying the fire extinguisher canister with the airbag, to extinguish fires and disperse smoke, utilizing the airbag's own buoyancy.

Description

Technical Field

[0001] This invention relates to the field of aviation equipment technology, specifically to a building fire extinguishing and smoke dispersal drone device. Background Technology

[0002] The building fire extinguishing and smoke dispersal drone device is an innovative piece of equipment that combines drone technology with the needs of fire rescue. It aims to solve the pain point of traditional fire fighting methods being unable to operate efficiently in complex building environments, such as high-rise buildings, super high-rise buildings, underground spaces, and narrow areas. Its core functions include precise fire extinguishing, rapid smoke dispersal, on-site reconnaissance and situational awareness, which can significantly improve rescue efficiency and reduce the risk of casualties.

[0003] In the prior art, such as Chinese Patent Publication No. CN111422352B, a drone fire extinguishing device is disclosed. This drone fire extinguishing device has many functions, and multiple partitions facilitate the clamping and fixing of fire extinguishing bombs of different sizes and models. It will not fall off when carrying fire extinguishing bombs, and it can carry a large number of them, resulting in high fire extinguishing efficiency.

[0004] Currently, as part of the aviation equipment industry, drones used for building fire fighting need to carry 3-5kg of extinguishing agent canisters during firefighting, which increases the overall load on the drones. Working under high load significantly shortens the drones' endurance and working time. Furthermore, due to the limitations of the drones' load capacity, the amount of extinguishing materials they can carry is limited, which greatly restricts their firefighting range and effectiveness, causing certain inconveniences in practical applications.

[0005] Therefore, we propose a building fire extinguishing and smoke dispersal drone device to solve the problems mentioned above. Summary of the Invention

[0006] The purpose of this invention is to provide a building fire extinguishing and smoke dispersal drone device to solve the problems of heavy load and short flight time in the prior art mentioned in the background.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a building fire extinguishing and smoke dispersal drone device, comprising a drone body and a fire extinguisher canister for smoke dispersal and fire extinguishing, wherein a gas delivery assembly is provided on the top of the drone body, the gas delivery assembly includes a sealed storage chamber, the sealed storage chamber stores a mixture of helium and nitrogen gas for fire extinguishing, a compression plate for compressing the gas is slidably connected inside the sealed storage chamber, a hollow rod for delivering gas outward is fixed at the bottom of the compression plate near one edge, an air inlet is provided on the outer surface of the hollow rod near the top, an air outlet is provided on the outer surface of the hollow rod near the bottom, and a suspension assembly is provided, the suspension assembly includes an airbag, a support base is fixed on the inner bottom surface of the airbag, a plurality of telescopic rods are slidably connected inside the support base, an arc-shaped push block for expanding and contracting the airbag is fixed at one end of the telescopic rod, and the bottom end of the hollow rod is fixedly inserted into the interior of the airbag.

[0008] Preferably, the fire extinguisher canister is positioned on top of the airbag, and the gas delivery assembly further includes a support frame. The bottom of the support frame is fixedly connected to the top of the sealed storage chamber, and the bottom of the sealed storage chamber is fixedly connected to the outer surface of the UAV body. A hydraulic rod is provided on the inner top surface of the support frame, and the bottom end of the hydraulic rod is fixedly connected to the top of the extrusion plate.

[0009] Preferably, a solid rod is fixed at the bottom of the extrusion plate near the other edge, and the bottom ends of both the solid rod and the hollow rod extend movably through to the outside of the sealed storage chamber. A valve body is fixed inside the hollow rod near the top, and a connecting rod is fixedly installed at the bottom of the valve body.

[0010] Preferably, a first spring is provided at the top of the connecting rod, and a sealing steel ball is fixed at the top of the first spring, the sealing steel ball being disposed inside the valve body.

[0011] Preferably, the suspension assembly further includes a rotating shaft, the bottom end of which is fixedly connected to the top of the support base. A large gear is movably fitted onto the outer surface of the rotating shaft. A limit block is fixed to the top of the telescopic rod. Multiple arc-shaped grooves are formed on the top of the large gear. The outer surface of the limit block slides against the inner wall of the arc-shaped grooves. A support plate is fixed to the top of the rotating shaft. The bottom end of the solid rod is fixedly connected to the top of the support plate. The bottom ends of both the hollow rod and the solid rod are fixedly inserted into the interior of the airbag. The bottom ends of both the hollow rod and the solid rod are fixedly connected to the top of the support plate.

[0012] Preferably, a drive rod is fixed to the top of the support base, a small gear is movably sleeved on the outer surface of the drive rod, the outer surface of the small gear meshes with the outer surface of the large gear, a drive motor is provided at the bottom of the support plate, the output end of the drive motor is fixedly connected to the top of the drive rod, and the outer surface of the arc-shaped push block is fixedly connected to the inner wall of the airbag.

[0013] Preferably, positioning plates are fixed on both outer surfaces of the UAV body, and the bottom ends of the solid rod and the hollow rod respectively extend through the outside of the two positioning plates. A stabilization component is provided at the bottom of one of the positioning plates. The stabilization component includes a hollow tube. The top end of the hollow tube is fixedly connected to the bottom of the positioning plate, and the inner wall of the hollow tube slides against the outer surface of the solid rod.

[0014] Preferably, the outer surface of the airbag is fixedly connected to a guide cylinder, the bottom of the guide cylinder has a large inner cavity, the top of the guide cylinder has a small inner cavity, the bottom end of the guide cylinder is fixedly inserted into the interior of the airbag, the large inner cavity and the small inner cavity are connected, a sealing block slides inside the small inner cavity, a support tube is fixedly attached to the top of the sealing block, and the top end of the support tube is fixedly connected to the outer surface of the hollow tube.

[0015] Preferably, a release assembly is provided on the outer surface of the airbag. The release assembly includes an air outlet tube, the bottom of which is fixedly inserted into the interior of the airbag. A small chamber is formed at the bottom of the air outlet tube, and a large chamber is formed at the top of the air outlet tube.

[0016] Preferably, a sealing plate slides on the inner wall of the small chamber, and a second spring is provided on the top of the sealing plate, with the top end of the second spring fixedly connected to the inner wall of the air outlet pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In the process of using a drone to carry a fire extinguisher canister for fire fighting in buildings, in order to reduce the load on the drone itself, the fire extinguisher canister is first fixed to the airbag with external straps, and a mixture of nitrogen and helium gas with fire extinguishing and levitation effects is filled into the airbag. By moving multiple arc-shaped pushers, the airbag is extended into a boat shape to reduce wind resistance during levitation. Then, the drone can be launched to carry the fire extinguisher canister with the airbag to fight fires and disperse smoke in buildings. The buoyancy of the airbag itself reduces the load on the drone, thereby reducing the energy consumption of the motor in the drone, increasing the flight time, and improving the working efficiency of the drone. This solves the problem of heavy load and short flight time of existing drone devices for fire fighting and smoke dispersal in buildings.

[0019] 2. During the process of the fire extinguisher canister spraying extinguishing agent to extinguish a fire, its weight decreases. To ensure that the buoyancy of the airbag matches the weight of the fire extinguisher canister, as the weight of the fire extinguisher canister decreases, the airbag is lifted upwards. This causes the solid and hollow rods to slide upwards along the inner wall of the positioning plate. At this time, the guide tube moves upwards, causing the sealing block to remain inside the large inner cavity. The gas inside the airbag then enters the small inner cavity along the large inner cavity and is released outwards. As the gas inside the airbag is released, its own weight decreases, causing the sealing block to move into the small inner cavity, resealing the airbag and ensuring the stability of the fire extinguisher canister's operation. As the weight of the fire extinguisher canister decreases again, it opens again and releases gas outwards. The released nitrogen and helium mixture can be used for fire extinguishing again, improving the fire extinguishing efficiency.

[0020] 3. In windy weather, to reduce the wind resistance of the airbag, the drive motor is started, which drives the drive rod to rotate in the opposite direction, thereby shrinking the multiple arc-shaped push blocks and reducing the volume of the airbag. At the same time, during the shrinkage process, the gas inside the airbag is compressed, pushing the sealing plate upward to the interior of the large chamber, so that the gas inside the airbag is released outward to extinguish the fire. This not only prevents the gas inside the airbag from being over-expanded due to pressure, but also improves the fire extinguishing efficiency at the scene. Attached Figure Description

[0021] Figure 1 This is a front perspective view of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0022] Figure 2 This is a sectional perspective view of the suspension component of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0023] Figure 3 This is a sectional perspective view of the gas supply component of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0024] Figure 4 This is a sectional perspective view of the hollow rod portion of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0025] Figure 5 This is a perspective view of the drone body of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0027] Figure 7 This is a three-dimensional cross-sectional view of the airbag portion of a building fire extinguishing and smoke dispersal drone device according to the present invention;

[0028] Figure 8 For the present invention Figure 7 Enlarged view at point B in the middle;

[0029] Figure 9 This is a perspective cross-sectional view of the airbag portion of a building fire extinguishing and smoke dispersal drone device according to the present invention.

[0030] Figure 10 This is a three-dimensional view of the suspended component structure of a building fire extinguishing and smoke dispersal drone device according to the present invention.

[0031] In the picture:

[0032] 1. UAV body; 2. Air supply assembly; 201. Sealed storage chamber; 202. Support frame; 203. Hydraulic rod; 204. Extrusion plate; 205. Solid rod; 206. Hollow rod; 207. Valve body; 208. Connecting rod; 209. First spring; 210. Sealing steel ball; 211. Air outlet; 212. Air inlet; 3. Positioning plate; 4. Stabilization assembly; 401. Hollow tube; 402. Support tube; 403. Guide tube; 404. Large inner cavity; 405. Small inner cavity; 4 06. Sealing block; 5. Suspension assembly; 501. Airbag; 502. Support base; 503. Telescopic rod; 504. Arc-shaped push block; 505. Large gear; 506. Limiting block; 507. Arc-shaped slide groove; 508. Small gear; 509. Drive rod; 510. Drive motor; 511. Rotating shaft; 512. Support plate; 6. Release assembly; 601. Air outlet pipe; 602. Small chamber; 603. Large chamber; 604. Sealing plate; 605. Second spring; 7. Fire extinguisher canister. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-10This invention provides a technical solution: a building fire extinguishing and smoke dispersal drone device, comprising a drone body 1 and a fire extinguisher canister 7 for smoke dispersal and fire extinguishing. A gas delivery assembly 2 is disposed on the top of the drone body 1. The gas delivery assembly 2 includes a sealed storage chamber 201, which stores a mixture of helium and nitrogen for fire extinguishing. A compression plate 204 for compressing the gas is slidably connected within the sealed storage chamber 201. A gas delivery device for outwardly conveying gas is fixed near one edge of the bottom of the compression plate 204. Hollow rod 206, with an air inlet 212 near the top and an air outlet 211 near the bottom on the outer surface of the hollow rod 206. Suspension assembly 5, including airbag 501, with a support base 502 fixed to the bottom surface of the airbag 501. Multiple telescopic rods 503 are slidably connected inside the support base 502. One end of each telescopic rod 503 is fixed with an arc-shaped push block 504 for expanding and contracting the airbag 501. The bottom end of the hollow rod 206 is fixedly inserted into the interior of the airbag 501.

[0035] In building fire rescue operations, drones are often used to carry fire extinguishers for firefighting and smoke dispersal to facilitate rescue efforts. When using the drone body 1 to carry the fire extinguisher canister 7, to reduce the overall weight of the drone body 1, the fire extinguisher canister 7 is first secured to the top of the airbag 501 using external straps. The airbag 501 is made of aramid fiber woven fabric, which has flame-retardant and high-temperature resistant properties. It inflates when inflated and contracts when inhaled. Before the drone body 1 takes flight, the extrusion plate 204 slides downwards along the inner wall of the sealed storage chamber 201, compressing the helium and nitrogen mixture stored in the sealed storage chamber 201 downwards. The helium and nitrogen mixture ratio is 1:1. Under the extrusion pressure, the mixture enters the hollow rod 206 through the air inlet 212 and moves downwards along the inner wall of the hollow rod 206. Finally, it is delivered to the airbag 501 through the air outlet 211, causing the airbag 501 to expand due to the filling gas and diffuse outwards, forming a... Figure 9The boat-shaped suspension body shown, with its bow corresponding to the head of the drone body 1, is designed to reduce wind resistance during flight of the airbag 501, thereby reducing the load on the drone body 1. When the drone body 1 is activated, it moves the hollow rod 206 upwards, which in turn moves the airbag 501 upwards. At this point, the airbag 501 is filled with a mixture of nitrogen and helium. Under standard atmospheric pressure, the density of air is 1.293 kg / m³, and the density of the mixed gas is 0.714. kg / m³. Since the density of the mixed gas is much less than that of air, when the airbag 501 is filled with the mixed gas, the airbag 501 will generate a levitation force, which will make the airbag 501 float in the air and support the fire extinguisher tank 7, share part of the load of the UAV body 1, improve the load capacity of the UAV body 1, and significantly reduce the energy consumption of the UAV body 1. As the energy consumption of the UAV body 1 decreases, the energy consumption of the motor in the UAV body 1 is reduced and the range is improved. The specific working principle of the flight of the UAV body 1 is a mature existing technology and will not be described in detail here.

[0036] The support base 502 supports the airbag 501. To ensure the airbag 501 expands and contracts in a predetermined direction during the enlargement process, it first extends outwards in all directions during the gas delivery process. Figure 9 The multiple telescopic rods 503 shown cause the multiple arc-shaped push blocks 504 to move in all directions, thereby extending the airbag 501 so that it is in the shape of... Figure 9 The boat-shaped structure shown not only achieves the initial positioning of the airbag 501, causing it to expand in the predetermined direction and ensuring the stability of the airbag 501, but also ensures the operational stability of the fire extinguisher tank 7.

[0037] It should also be noted that the fire extinguisher canister 7 is located on top of the airbag 501, and the gas delivery assembly 2 also includes a support frame 202. The bottom of the support frame 202 is fixedly connected to the top of the sealed storage chamber 201, and the bottom of the sealed storage chamber 201 is fixedly connected to the outer surface of the drone body 1. A hydraulic rod 203 is provided on the inner top surface of the support frame 202, and the bottom end of the hydraulic rod 203 is fixedly connected to the top of the extrusion plate 204.

[0038] like Figures 1-5 and Figures 7-10 As shown, the fire extinguisher canister 7 is fixed to the top of the airbag 501 by an external fixing structure and is located at the center of the airbag 501, thereby facilitating the release of extinguishing gas from the fire extinguisher canister 7. For example... Figure 2As shown, the support frame 202 is fixed to the top of the sealed storage chamber 201 and is in the shape of a "door". It is mainly used to install and fix the hydraulic rod 203. By extending the hydraulic rod 203, the extrusion plate 204 is driven to move downward along the inner wall of the sealed storage chamber 201 to extrude the gas stored in the sealed storage chamber 201.

[0039] It should also be noted that a solid rod 205 is fixed at the bottom of the extrusion plate 204 near the other edge. The bottom ends of both the solid rod 205 and the hollow rod 206 extend to the outside of the sealed storage chamber 201. A valve body 207 is fixed inside the hollow rod 206 near the top. A connecting rod 208 is fixedly installed at the bottom of the valve body 207.

[0040] like Figures 1-4 As shown, both the solid rod 205 and the hollow rod 206 support the airbag 501. Through the cooperation of the solid rod 205, the hollow rod 206, and the multiple arc-shaped push blocks 504, the airbag 501 is limited, preventing it from shaking violently due to wind during its floating in the air. The fixing between the compression plate 204 and the solid rod 205 and the hollow rod 206 allows the solid rod 205 and the hollow rod 206 to move up and down with the compression plate 204, thereby driving the fire extinguisher canister 7 to move up and down. Figure 4 As shown, the internal cross-section of the valve body 207 is trapezoidal, and the connecting rod 208 supports the components installed inside the valve body 207.

[0041] It should also be noted that a first spring 209 is provided at the top of the connecting rod 208, and a sealing steel ball 210 is fixed at the top of the first spring 209. The sealing steel ball 210 is located inside the valve body 207.

[0042] like Figures 1-4 As shown, when the gas in the sealed storage chamber 201 enters the hollow rod 206, the large amount of gas input compresses the sealing steel ball 210, causing the first spring 209 to shorten under force. This causes the sealing steel ball 210 to move downward along the inside of the valve body 207, creating a gap between the sealing steel ball 210 and the inside of the valve body 207. This allows the gas positioned above the valve body 207 to pass through the gap and continue to flow downward along the inner wall of the hollow rod 206. The connecting rod 208 supports the first spring 209.

[0043] It should also be noted that the suspension component 5 also includes a rotating shaft 511. The bottom end of the rotating shaft 511 is fixedly connected to the top of the support base 502. A large gear 505 is movably fitted on the outer surface of the rotating shaft 511. A limiting block 506 is fixedly fixed on the top of the telescopic rod 503. Multiple arc-shaped grooves 507 are opened on the top of the large gear 505. The outer surface of the limiting block 506 slides against the inner wall of the arc-shaped grooves 507. A support plate 512 is fixedly fixed on the top of the rotating shaft 511. The bottom end of the solid rod 205 is fixedly connected to the top of the support plate 512. The bottom ends of both the hollow rod 206 and the solid rod 205 are fixedly inserted into the interior of the airbag 501. The bottom ends of both the hollow rod 206 and the solid rod 205 are fixedly connected to the top of the support plate 512.

[0044] like Figures 1-4 and Figures 7-10 As shown, during the enlargement of the airbag 501, the rotating shaft 511 supports the large gear 505. As the large gear 505 rotates, it drives the rotation of multiple arc-shaped sliding grooves 507, which in turn drives the corresponding limiting block 506 to move along with the rotation of the arc-shaped sliding groove 507. This pushes the multiple limiting blocks 506 to slide outward along the inner wall of the support base 502, thus extending the airbag 501. The support base 502 supports the fire extinguisher canister 7, preventing the airbag 501 from being deformed by the compression of the fire extinguisher canister 7. The stability of the airbag 501 is ensured by the fixation between the hollow rod 206, the solid rod 205 and the support plate 512, thereby ensuring the stability of the fire extinguisher canister 7.

[0045] It should also be noted that a drive rod 509 is fixed to the top of the support base 502, and a small gear 508 is movably sleeved on the outer surface of the drive rod 509. The outer surface of the small gear 508 meshes with the outer surface of the large gear 505. A drive motor 510 is provided at the bottom of the support plate 512. The output end of the drive motor 510 is fixedly connected to the top of the drive rod 509. The outer surface of the arc-shaped push block 504 is fixedly connected to the inner wall of the airbag 501.

[0046] like Figures 1-2 and Figures 7-10 As shown, during the process of extending the airbag 501 by multiple arc-shaped push blocks 504, the drive motor 510 is first started, which drives the drive rod 509 to rotate, thereby driving the small gear 508 to rotate, which in turn drives the large gear 505 to rotate. This causes multiple limit blocks 506 to be driven by their corresponding arc-shaped slide grooves 507 and move outward along the inner wall of the support base 502, thereby deploying the airbag 501.

[0047] It should also be noted that positioning plates 3 are fixed on both outer surfaces of the drone body 1. The bottom ends of the solid rod 205 and the hollow rod 206 respectively extend through to the outside of the two positioning plates 3. A stabilization component 4 is set at the bottom of one of the positioning plates 3. The stabilization component 4 includes a hollow tube 401. The top end of the hollow tube 401 is fixedly connected to the bottom of the positioning plate 3. The inner wall of the hollow tube 401 slides against the outer surface of the solid rod 205.

[0048] like Figures 1-6 As shown, the positioning plates 3 are respectively set on both sides of the UAV body 1, which play a positioning role for the solid rod 205 and the hollow rod 206. The fire extinguisher tank 7 is equipped with multi-modal sensors such as visible light camera, thermal imager and gas detector, which can penetrate smoke and complex terrain to quickly locate the fire source and high temperature area, and automatically spray fire extinguishing agent outward. During the process of the fire extinguishing agent in the fire extinguisher tank 7 being released outward, the weight of the fire extinguisher tank 7 is reduced. At this time, since the buoyancy of the airbag 501 remains unchanged, the load of the airbag 501 is reduced and it moves upward, driving the solid rod 205 and the hollow rod 206 to move upward. At this time, the hollow tube 401 is fixedly connected to the positioning plate 3, so the airbag 501 cannot drive the hollow tube 401 to move upward.

[0049] It should also be noted that a guide cylinder 403 is fixedly connected to the outer surface of the airbag 501. A large inner cavity 404 is opened at the bottom of the guide cylinder 403, and a small inner cavity 405 is opened at the top of the guide cylinder 403. The bottom end of the guide cylinder 403 is fixedly inserted into the interior of the airbag 501. The large inner cavity 404 and the small inner cavity 405 are connected. A sealing block 406 slides inside the small inner cavity 405. A support tube 402 is fixedly fixed at the top of the sealing block 406. The top end of the support tube 402 is fixedly connected to the outer surface of the hollow tube 401.

[0050] like Figures 1-2 and Figures 5-10 As shown, when the weight of the fire extinguisher canister 7 decreases, the load on the airbag 501 decreases, causing it to move upwards. This moves the guide cylinder 403 upwards, causing the sealing block 406, originally located in the small inner cavity 405, to move into the large inner cavity 404. For example... Figure 6As shown, the outer diameter of the sealing block 406 matches the inner diameter of the small inner cavity 405, while the inner diameter of the large inner cavity 404 is much larger than the outer diameter of the sealing block 406. When the guide cylinder 403 moves upward, causing the large inner cavity 404 to move upward, the vertical position of the sealing block 406 remains unchanged, allowing it to be positioned inside the large inner cavity 404. This allows the helium and nitrogen mixture inside the airbag 501 to flow out through the gap between the sealing block 406 and the large inner cavity 404. Because nitrogen has fire-extinguishing properties, the released nitrogen can accelerate the extinguishing of building fires. The gas is released outward, reducing its buoyancy and causing it to move downward, which in turn moves the guide cylinder 403 downward. When the sealing block 406 returns to the small inner cavity 405, the gas release in the airbag 501 is completed. By matching the volume inside the airbag 501 with the weight of the fire extinguisher tank 7, the stability of the airbag 501 is ensured, thereby ensuring the stability of the building fire extinguishing and smoke dispersal drone device during the fire extinguishing process. This ensures that the buoyancy of the airbag 501 is always matched with the weight of the fire extinguisher tank 7, preventing the fire extinguisher tank 7 from releasing the extinguishing agent in an unstable position.

[0051] It should also be noted that a release assembly 6 is provided on the outer surface of the airbag 501. The release assembly 6 includes an air outlet pipe 601. The bottom of the air outlet pipe 601 is fixedly inserted into the interior of the airbag 501. A small chamber 602 is opened at the bottom of the air outlet pipe 601, and a large chamber 603 is opened at the top of the air outlet pipe 601. A sealing plate 604 slides on the inner wall of the small chamber 602. A second spring 605 is provided on the top of the sealing plate 604. The top of the second spring 605 is fixedly connected to the inner wall of the air outlet pipe 601.

[0052] like Figures 1-2 and Figures 7-10 As shown, during firefighting, when encountering strong winds, in order to reduce wind resistance to the airbag 501 and prevent it from shaking violently, the drive motor 510 is restarted, causing the rotating shaft 511 to rotate in the opposite direction. This causes the multiple arc-shaped push blocks 504 to retract, thereby causing the airbag 501 to retract. During the retraction of the airbag 501, the gas inside is compressed and enters the interior of the air outlet pipe 601, squeezing the sealing plate 604 located in the small chamber 602. This causes the sealing plate 604 to be squeezed and moved into the large chamber. Inside chamber 603, the second spring 605 is compressed and shortened. When the sealing plate 604 moves into the large chamber 603, the gas in the airbag 501 flows out through the gap between the sealing plate 604 and the interior of the large chamber 603 and is released into the environment to extinguish the fire. By shortening the volume of the airbag 501, the windward area of ​​the airbag 501 during the flight of the drone can be reduced to reduce wind resistance, thereby further ensuring the stability of the fire extinguisher tank 7 during the fire extinguishing process and improving the control stability of the drone during flight.

[0053] The usage and working principle of this device are as follows: When a drone carrying fire extinguishing equipment is needed to extinguish fires in a building, in order to reduce the load on the drone body 1 and increase the operating time of the drone body 1, before the drone body 1 takes off, the drive motor 510 is first started, which drives the drive rod 509 to rotate, thereby driving the small gear 508 to rotate, which in turn drives the large gear 505 to rotate, causing multiple telescopic rods 503 to move out of the interior of their respective support seats 502, thereby causing multiple arc-shaped push blocks 504 to extend outward to form an airbag 501. Then, the hydraulic rod 203 is started to extend, causing the extrusion plate 204 to slide downward along the inner wall of the sealed storage chamber 201, thereby driving the solid rod 205 and the hollow rod 206 to move towards the airbag 501. The downward movement compresses the nitrogen and helium mixture stored in the sealed storage chamber 201, hereinafter referred to as the mixed gas. This compressive force pushes the airbag 501 downward. The mixed gas, under pressure, is delivered through the air inlet 212 to the interior of the hollow rod 206, compressing the sealing steel ball 210. This causes the first spring 209 to shorten, creating a gap between the valve body 207 and the sealing steel ball 210. The mixed gas then flows downward along the inner wall of the hollow rod 206 through the valve body 207 and is delivered through the air outlet 211 to the interior of the airbag 501, causing the airbag 501 to inflate. The fire extinguisher canister 7 is then secured to the outer surface of the airbag 501 with external straps, ensuring the canister 7 faces the supporting plate 512. Then, the drone body 1 can be activated, carrying the fire extinguisher canister 7 to the building fire scene. The fire extinguisher canister 7 is activated to extinguish the fire and disperse smoke. During the release of the extinguishing agent, as the weight of the canister 7 decreases, the load on the airbag 501 decreases, causing it to move upwards due to buoyancy. This pushes the guide tube 403 upwards. When the sealing block 406 is placed inside the large inner cavity 404, the mixed gas inside the airbag 501 flows outwards along the interior of the large inner cavity 404 and the small inner cavity 405, extinguishing the fire. As the gas in the airbag 501 flows outwards, its buoyancy decreases, causing it to move downwards, pulling the guide tube 403 downwards, thus sealing the guide tube 403. In case of strong winds... In case of fire, to reduce the resistance on the airbag 501, the drive motor 510 can be restarted to rotate the drive rod 509 in the opposite direction. This causes the multiple arc-shaped push blocks 504 to contract inward, thus reducing the volume of the airbag 501. During the contraction of the airbag 501, the gas mixture inside is compressed, causing the sealing plate 604 to move upward. This causes the second spring 605 to shorten under pressure and enter the large chamber 603, connecting the interior of the airbag 501 with the small chamber 602 and the large chamber 603. This releases the gas mixture inside the airbag 501 outward, providing secondary fire suppression at the fire scene. When the pressure of the gas mixture on the sealing plate 604 decreases, the second spring 605 extends under its own elastic force.This causes the sealing plate 604 to move downwards and enter the small chamber 602, thereby resealing the gas inside the airbag 501.

[0054] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A building fire extinguishing and smoke dispersal drone device, comprising a drone body (1) and a fire extinguisher canister (7) for smoke dispersal and fire extinguishing, characterized in that: The top of the UAV body (1) is provided with a gas supply assembly (2), which includes a sealed storage chamber (201). The sealed storage chamber (201) stores a mixture of helium and nitrogen gas for fire extinguishing. A compression plate (204) for compressing gas is slidably connected inside the sealed storage chamber (201). A hollow rod (206) for supplying gas is fixed at the bottom of the compression plate (204) near one edge. An air inlet (212) is opened on the outer surface of the hollow rod (206) near the top. An air outlet (211) is opened on the outer surface of the hollow rod (206) near the bottom. The suspension component (5) includes an airbag (501), a support base (502) is fixed on the inner bottom surface of the airbag (501), a plurality of telescopic rods (503) are slidably connected inside the support base (502), an arc-shaped push block (504) for scaling the airbag (501) is fixed at one end of the telescopic rod (503), and the bottom end of the hollow rod (206) is fixedly inserted into the interior of the airbag (501).

2. The building fire extinguishing and smoke dispersal drone device according to claim 1, characterized in that: The fire extinguisher canister (7) is located on top of the airbag (501). The gas delivery assembly (2) also includes a support frame (202). The bottom of the support frame (202) is fixedly connected to the top of the sealed storage chamber (201). The bottom of the sealed storage chamber (201) is fixedly connected to the outer surface of the UAV body (1). A hydraulic rod (203) is provided on the inner top surface of the support frame (202). The bottom end of the hydraulic rod (203) is fixedly connected to the top of the extrusion plate (204).

3. The building fire extinguishing and smoke dispersal drone device according to claim 2, characterized in that: A solid rod (205) is fixed at the bottom of the extrusion plate (204) near the other edge. The bottom ends of the solid rod (205) and the hollow rod (206) extend movably through to the outside of the sealed storage chamber (201). A valve body (207) is fixed inside the hollow rod (206) near the top. A connecting rod (208) is fixedly installed at the bottom of the valve body (207).

4. The building fire extinguishing and smoke dispersal drone device according to claim 3, characterized in that: A first spring (209) is provided at the top of the connecting rod (208), and a sealing steel ball (210) is fixed at the top of the first spring (209). The sealing steel ball (210) is located inside the valve body (207).

5. The building fire extinguishing and smoke dispersal drone device according to claim 4, characterized in that: The suspension component (5) also includes a rotating shaft (511), the bottom end of which is fixedly connected to the top of the support base (502). A large gear (505) is movably fitted on the outer surface of the rotating shaft (511). A limiting block (506) is fixedly fixed on the top of the telescopic rod (503). Multiple arc-shaped grooves (507) are opened on the top of the large gear (505). The outer surface of the limiting block (506) slides against the inner wall of the arc-shaped groove (507). A support plate (512) is fixedly fixed on the top of the rotating shaft (511). The bottom end of the solid rod (205) is fixedly connected to the top of the support plate (512). The bottom ends of both the hollow rod (206) and the solid rod (205) are fixedly inserted into the interior of the airbag (501). The bottom ends of both the hollow rod (206) and the solid rod (205) are fixedly connected to the top of the support plate (512).

6. The building fire extinguishing and smoke dispersal drone device according to claim 5, characterized in that: A drive rod (509) is fixed to the top of the support base (502). A small gear (508) is movably sleeved on the outer surface of the drive rod (509). The outer surface of the small gear (508) meshes with the outer surface of the large gear (505). A drive motor (510) is provided at the bottom of the support plate (512). The output end of the drive motor (510) is fixedly connected to the top of the drive rod (509). The outer surface of the arc-shaped push block (504) is fixedly connected to the inner wall of the airbag (501).

7. The building fire extinguishing and smoke dispersal drone device according to claim 6, characterized in that: Positioning plates (3) are fixed on both outer surfaces of the UAV body (1). The bottom ends of the solid rod (205) and the hollow rod (206) respectively extend through the outside of the two positioning plates (3). A stabilization component (4) is provided at the bottom of one of the positioning plates (3). The stabilization component (4) includes a hollow tube (401). The top end of the hollow tube (401) is fixedly connected to the bottom of the positioning plate (3). The inner wall of the hollow tube (401) slides against the outer surface of the solid rod (205).

8. The building fire extinguishing and smoke dispersal drone device according to claim 7, characterized in that: The outer surface of the airbag (501) is fixedly connected to a guide cylinder (403). The bottom of the guide cylinder (403) is provided with a large inner cavity (404), and the top of the guide cylinder (403) is provided with a small inner cavity (405). The bottom end of the guide cylinder (403) is fixedly inserted into the interior of the airbag (501). The large inner cavity (404) and the small inner cavity (405) are connected. A sealing block (406) slides inside the small inner cavity (405). A support tube (402) is fixedly attached to the top of the sealing block (406). The top end of the support tube (402) is fixedly connected to the outer surface of the hollow tube (401).

9. The building fire extinguishing and smoke dispersal drone device according to claim 8, characterized in that: The outer surface of the airbag (501) is provided with a release component (6), the release component (6) includes an air outlet pipe (601), the bottom of the air outlet pipe (601) is fixedly inserted into the interior of the airbag (501), a small chamber (602) is opened at the bottom of the air outlet pipe (601), and a large chamber (603) is opened at the top of the air outlet pipe (601).

10. The building fire extinguishing and smoke dispersal drone device according to claim 9, characterized in that: The inner wall of the small chamber (602) is slidably fitted with a sealing plate (604), and a second spring (605) is provided on the top of the sealing plate (604). The top of the second spring (605) is fixedly connected to the inner wall of the air outlet pipe (601).

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