A smart firefighting drone with a large payload capacity

Abstract

This invention discloses an intelligent, heavy-duty multi-rotor firefighting drone, belonging to the field of firefighting drone technology. The intelligent, heavy-duty multi-rotor firefighting drone of this invention includes a multi-rotor drone body; a high-definition camera unit mounted at the front end of the multi-rotor drone body; a temperature and humidity sensing unit mounted at the rear end of the multi-rotor drone body; a support leg structure mounted with screws on the bottom of the multi-rotor drone body; and a liquid spraying and dispensing fire extinguishing device mounted with screws on the bottom of the multi-rotor drone body and located inside the support leg structure. In this invention, the fire extinguishing projectiles generate a stronger instantaneous impact force during launch and release, counteracting the thermal convection of the fire and ensuring that the projectiles accurately fall to the corresponding fire location, achieving highly accurate fire extinguishing operations. Simultaneously, the loading track can be intermittently opened and closed to avoid the problem of multiple fire extinguishing projectiles squeezing and colliding with each other during the energy storage and release process.

Description

Technical Field

[0001] This invention relates to the field of firefighting drone technology, specifically to an intelligent firefighting drone with a large payload and multi-rotor design. Background Technology

[0002] Firefighting drones are unmanned aircraft controlled by radio remote control or autonomous programs, specifically designed for fire suppression, fire reconnaissance, and emergency rescue missions in complex environments such as high-rise buildings, forests, and mountains. They can quickly reach the scene and perform operations such as breaking windows to extinguish fires, dropping fire extinguishing bombs, spraying water from high altitudes, and delivering supplies, overcoming the height and terrain limitations of traditional firefighting equipment.

[0003] Multi-rotor firefighting drones are unmanned aerial vehicles specifically designed for fire and rescue operations. They possess advantages such as vertical take-off and landing, hovering, and high maneuverability. Compared to traditional firefighting drones, they can bear greater weight due to the number of rotors and overall strength.

[0004] An existing drone fire extinguishing device, with application publication number CN111422352B, includes a drone body. A base plate is fixedly installed on the bottom of the drone body. Fixing grooves are formed on both sides of the base plate. Rotating plates are rotatably installed in each of the two fixing grooves. Gears are fixedly installed on one side of each of the two rotating plates. Connecting grooves are formed on the inner wall of one side of each of the two fixing grooves. In this invention, multiple partitions facilitate the clamping and fixing of fire extinguishing bombs of different sizes and models, preventing them from falling off during movement while being carried.

[0005] However, this firefighting drone has the following drawbacks in practical use: Existing firefighting drones typically extinguish fires by loading and releasing fire extinguishing bombs. This is done by using a switch-and-release mechanism to release the bombs, allowing them to fall vertically (due to their own weight) and extinguish the fire at the base. However, as flames rise, they generate upward thermal convection. This rising air creates a strong vertical airflow. Upon entering this area, the falling fire extinguishing bombs are subjected to this upward thrust, causing their trajectory to deviate from their original target. This prevents them from accurately reaching the base of the flames or the center of the fire, thus affecting their effectiveness in extinguishing the fire. To improve firefighting efficiency, firefighting drones typically carry several fire extinguishing projectiles inside. After the projectile at the discharge port is launched, the remaining projectiles need to be moved to the area around the discharge port. Traditional firefighting drones face operational challenges in moving fire extinguishing projectiles from other locations to the discharge port area. Summary of the Invention

[0006] The purpose of this invention is to provide an intelligent firefighting drone with a large payload capacity to solve the problems mentioned in the background art.

[0007] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: This invention provides an intelligent, heavy-duty multi-rotor firefighting drone, comprising: a multi-rotor drone body; a high-definition camera unit mounted at the front end of the multi-rotor drone body; a temperature and humidity sensing unit mounted at the rear end of the multi-rotor drone body; a support leg structure mounted on the bottom of the multi-rotor drone body with screws; and a liquid spraying and dispensing fire extinguishing device mounted on the bottom of the multi-rotor drone body and located inside the support leg structure with screws, wherein the liquid spraying and dispensing fire extinguishing device contains fire extinguishing bombs. The spraying and delivery fire extinguishing device includes: a loading structure mounted on the bottom of the multi-rotor UAV body by screws; water tanks installed on the front and rear sides inside the loading structure; a belt drive structure installed on the top inside the loading structure; an energy-storing ejection structure connected to the belt drive structure and movably connected to the front and rear sides of the loading structure, the energy-storing ejection structure triggering the energy-storing fire extinguishing projectile inside the loading structure to launch; a first toothed belt connected to the outside of the belt drive structure via a synchronous pulley; a partitioned feeding structure connected to the inside of the first toothed belt via a synchronous pulley and extending into the loading structure; and an atomizing fire extinguishing structure connected to the outside of the belt drive structure via ball bearings, the atomizing fire extinguishing structure being installed at the center inside the loading structure, and the atomizing fire extinguishing structure being connected to the water tank. The multi-rotor drone body is connected to the drone platform via radio, and the drone platform controls the flight attitude of the multi-rotor drone body and the operation of spraying liquid and deploying fire extinguishing devices.

[0008] As a preferred embodiment of the present invention, the support leg structure includes: The L-shaped mounting bracket is installed on the front and rear sides inside the multi-rotor drone body by screws. A horizontal bar is installed at the bottom of the L-shaped mounting bracket and is installed at the bottom of the multi-rotor drone body. Lightweight steel support legs are welded and fixed to the bottom of the horizontal bar, and two lightweight steel support legs are provided.

[0009] As a preferred embodiment of the present invention, the loading structure includes: A lightweight vertical steel plate is installed at the bottom of the multi-rotor UAV body by screws, and a lightweight intermediate support is installed and fixed on the inner side of the lightweight vertical steel plate. A lightweight bottom plate is attached to the bottom of the lightweight intermediate support by screws. The lightweight bottom plate is also attached to the bottom of a lightweight vertical steel plate, and a loading rail is installed on the bottom of the lightweight bottom plate. Loading channels are installed on both sides of the loading track, and the loading channels extend to the outside of the lightweight bottom plate.

[0010] As a preferred embodiment of the present invention, a belt drive structure is installed on the inner side of the lightweight vertical steel plate, a partition feeding structure is movably connected to the side of the lightweight intermediate support, an energy storage ejection structure is provided at the top of the loading channel, the partition feeding structure extends into the interior of the loading track, and a misting fire extinguishing structure is installed at the center of the interior of the lightweight intermediate support. The lightweight bottom plate has a feeding channel at its center, through which the fire extinguishing bomb is transported to the loading track. The loading track is H-shaped, with a conical protrusion at its center and a first inclined surface at its bottom, which drives the fire extinguishing bomb to move into the loading channel.

[0011] As a preferred embodiment of the present invention, the belt drive structure includes: A linear drive source is installed at the bottom of the multi-rotor UAV body. The output end of the linear drive source is connected to a first gear, and the bottom of the first gear is meshed with a second gear. A lead screw drive rod is connected to the second gear. The lead screw drive rod is rotatably connected to the inner side of the lightweight vertical steel plate. The outer side of the lead screw drive rod is connected to a second toothed belt via a synchronous pulley. The inner side of the second toothed belt is connected to a linear rotating rod via a synchronous pulley. The linear rotating rod is rotatably connected to the inner side of the lightweight vertical steel plate. The outer side of the lead screw drive rod is connected to an atomizing fire extinguishing structure via ball bearings, the outer side of the lead screw drive rod is connected to a first toothed belt via a synchronous pulley, and energy storage ejection structures are installed at the left and right ends of the lead screw drive rod and the linear rotating rod.

[0012] As a preferred embodiment of the present invention, the energy storage ejection structure includes: A rotating disk is connected to the lead screw drive rod and the linear rotating rod. The left and right sides of the rotating disk protrude outward and form protrusions. The movable plate is rotatably connected to the side of the lightweight vertical steel plate, and a rotating plate is rotatably connected to the side of the movable plate. A lead screw transmission rod and a linear rotating rod are installed through the interior of the movable plate. An eccentric protrusion is installed at an eccentric position on the side of the movable disk, and the movable disk is rotated by the protrusion. A metal arm is rotatably connected to the eccentric position on the side of the movable disk. A vertical ejector rod is rotatably connected to the bottom of the metal arm and slidably connected to the outside of the lightweight vertical steel plate. A rubber trigger block is installed at the bottom of the vertical ejector rod, extending into the interior of the loading channel and triggering the movement of the fire extinguishing bomb inside the loading channel.

[0013] As a preferred embodiment of the present invention, a lifting baffle is installed on the outer side of the vertical catapult rod. The lifting baffle is slidably connected to the center of the outer side of the lightweight vertical steel plate. An energy storage spring is connected to the top of the lifting baffle. The energy storage spring is sleeved on the outer side of the vertical catapult rod and installed on the outer side of the lightweight vertical steel plate.

[0014] As a preferred embodiment of the present invention, the partition feeding structure includes: A rotating rod is rotatably connected inside the lightweight intermediate support. The rotating rod is connected to the inner side of the first toothed belt via an outer synchronous pulley. A rotating disk is connected to the side of the rotating rod, and the rotating disk is rotatably connected to the side of the lightweight bottom plate. The lower connecting arm is rotatably connected to an eccentric part on the side of the rotating disk. A connecting seat is rotatably connected to the bottom of the lower connecting arm, and a partition plate is installed at the bottom of the connecting seat by screws. The partition plate extends into the interior of the loading channel and is slidably connected to the lightweight bottom plate.

[0015] As a preferred embodiment of the present invention, the atomizing fire extinguishing structure includes: A spray can is installed at the center inside the lightweight intermediate support, and an inlet is installed on the top of the spray can, which is connected to a water storage tank via a hose. A jet piston is movably disposed inside the jet tank, and a tail rod is connected to the bottom of the jet piston, the tail rod extending to the outside of the water storage tank; An L-shaped connecting arm is connected to the tail rod, and the L-shaped connecting arm is connected to the outside of the lead screw drive rod via ball bearings. The jet piston is equipped with a flow rate control module on its side, and an atomizing nozzle is connected to the side of the flow rate control module. The atomizing nozzle atomizes the liquid and sprays it through a water curtain nozzle installed at the nozzle opening.

[0016] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In intelligent firefighting heavy-duty multi-rotor firefighting drones, when releasing the loaded fire extinguishing bombs for firefighting operations, a "pulse-like" spray of the fire extinguishing bombs can be achieved through a cycle of energy storage-release-re-energy storage. This allows the fire extinguishing bombs to generate a stronger instantaneous impact force during launch and release, counteracting the thermal convection phenomenon during fire flames. This ensures that the fire extinguishing bombs accurately fall to the corresponding fire location (the base of the flames or the center of the fire source) and explode, achieving highly accurate firefighting operations. Simultaneously, the structure driving the energy storage and ejection can also drive a partition plate through belt drive to cyclically lift and lower, intermittently opening and closing the internal channel of the loading track (used for transporting fire extinguishing bombs). This transports the fire extinguishing bombs one by one into the loading channel, avoiding the problem of multiple fire extinguishing bombs squeezing and colliding with each other during the energy storage and release process. 2. In intelligent firefighting heavy-duty multi-rotor fire extinguishing drones, when the fire extinguishing bomb is elastically released through energy storage, the driving force (rotation of the lead screw drive rod) that drives the energy storage structure can also drive the spray piston to extend and retract inside the spray tank through the lead screw drive. This compresses the liquid inside the spray tank, allowing it to be injected under pressure into the water curtain nozzle of the atomizing nozzle, and then sprayed out from the water curtain nozzle to extinguish the fire, improving the fire extinguishing effect. At the same time, the pressurized liquid can be torn into a large number of micron-sized droplets through the tiny holes or gaps inside the atomizing nozzle, which, together with the water curtain nozzle, increases the coverage area of ​​the liquid atomization spray. 3. In the intelligent fire-fighting heavy-duty multi-rotor fire extinguishing drone, the conical protrusion at the center of the loading track can move the fire extinguishing bombs that fall into the loading track one by one into the storage space inside the loading track. Through the inclined plane formed by the first inclined plane, multiple fire extinguishing bombs are pressed together against each other. The adjacent fire extinguishing bombs press against and squeeze each other, ensuring that the fire extinguishing bombs can smoothly pass through the loading track and enter the loading channel, which facilitates continuous loading and release of fire extinguishing bombs. Attached Figure Description

[0017] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall main view of the present invention; Figure 3 This is a schematic diagram of the overall front view of the present invention; Figure 4 This is a side view of the overall structure of the present invention; Figure 5 This is a schematic diagram of the connection between the multi-rotor UAV body and the support leg structure of the present invention; Figure 6 This is an exploded view of the multi-rotor UAV body and support leg structure of the present invention after connection; Figure 7 This is a schematic diagram of the connection between the support leg structure and the liquid spraying and delivery fire extinguishing device of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged structural diagram of region A in the middle; Figure 9 This is a cross-sectional structural diagram showing the connection between the multi-rotor UAV body and the support leg structure of the present invention; Figure 10 This is a schematic diagram of the structure of the liquid spraying and fire extinguishing device of the present invention; Figure 11 This is the present invention. Figure 10 Enlarged structural diagram of region B in the middle; Figure 12 This is a schematic diagram of the connection between the loading structure and the energy storage catapult structure of the present invention; Figure 13 This is an exploded view of the loading structure of the present invention; Figure 14 This is a schematic diagram of the connection between the lead screw drive rod and the energy storage catapult structure of the present invention; Figure 15 This is a schematic diagram showing the connection between the belt drive structure and the isolation feeding structure of the present invention. Figure 16 This is a schematic diagram of the connection between the lightweight intermediate support and the atomizing fire extinguishing structure of the present invention; Figure 17This is a schematic diagram showing the cross-sectional view of the connection between the lightweight intermediate support and the atomizing fire extinguishing structure of the present invention; Figure 18 This is an exploded view of the present invention after the track and embedded ring are installed; In the picture: 10. Multi-rotor drone body; 20. High-definition camera unit; 30. Temperature and humidity sensor unit; 40. Support leg structure; 401. L-shaped mounting base; 402. Horizontal bar; 403. Lightweight steel support leg; 50. Liquid spraying and dispensing fire extinguishing device; 501. Loading structure; 502. Water storage tank; 503. Belt drive structure; 5030. First toothed belt; 504. Energy storage ejection structure; 505. Isolation feeding structure; 506. Atomizing fire extinguishing structure; 5011 Lightweight vertical steel plate; 5012 Lightweight intermediate support; 5013 Lightweight bottom plate; 50131 Feeding channel; 5014 Loading track; 50141 Conical protrusion; 50142 First inclined surface; 5015 Loading channel; 5031, Linear drive source; 5032, First gear; 5033, Second gear; 5034, Lead screw drive rod; 5035, Second toothed belt; 5036, Linear rotating rod; 5041, Rotating disc; 5042, Protrusion; 5043, Movable disc; 5044, Eccentric protrusion; 5045, Metal arm; 5046, Vertical ejection rod; 50461, Lifting baffle; 50462, Energy storage spring; 5047, Rubber trigger block; 5051, Rotating rod; 5052, Rotating disk; 5053, Lower connecting arm; 5054, Connecting seat; 5055, Partition plate; 5061. Spray can; 5062. Inlet nozzle; 5063. Spray piston; 5064. Tail rod; 5065. L-shaped connecting arm; 5066. Flow rate control module; 5067. Atomizing nozzle; 5068. Water curtain nozzle; 60. Embedded ring; 601. Side pressure block; 602. Return spring. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0021] Example 1 Please see Figures 1-17 A smart fire-fighting heavy-duty multi-rotor drone includes a multi-rotor drone body 10; a high-definition camera unit 20 mounted at the front end of the multi-rotor drone body 10; a temperature and humidity sensing unit 30 mounted at the rear end of the multi-rotor drone body 10; a support leg structure 40 mounted on the bottom of the multi-rotor drone body 10 by screws; and a liquid spraying and dispensing fire extinguishing device 50 mounted on the bottom of the multi-rotor drone body 10 and located inside the support leg structure 40 by screws. The liquid spraying and dispensing fire extinguishing device 50 contains fire extinguishing bombs. The liquid spraying and dispensing fire extinguishing device 50 includes: a loading structure 501 mounted on the bottom of the multi-rotor drone body 10 by screws; water tanks 502 installed on the front and rear sides inside the loading structure 501; a belt drive structure 503 installed on the top inside the loading structure 501; and a device connected to the belt drive structure 503. The energy storage ejection structure 504 is connected to the front and rear sides of the loading structure 501. The energy storage ejection structure 504 triggers the energy storage and launch of the fire extinguishing projectile inside the loading structure 501. The first toothed belt 5030 is connected to the outside of the belt drive structure 503 via a synchronous pulley. The partition feeding structure 505 is connected to the inside of the first toothed belt 5030 via a synchronous pulley and extends into the loading structure 501. The atomizing fire extinguishing structure 506 is connected to the outside of the belt drive structure 503 via ball bearings. The atomizing fire extinguishing structure 506 is installed at the center inside the loading structure 501 and is connected to the water tank 502. The multi-rotor UAV body 10 is connected to the UAV platform via radio and the UAV platform controls the flight attitude of the multi-rotor UAV body 10 and the operation of spraying and deploying the fire extinguishing device 50.

[0022] The working principle is as follows: When the multi-rotor drone 10 is used to extinguish a fire, the high-definition camera unit 20 conducts on-site surveys, and the temperature and humidity sensor unit 30 detects the temperature and humidity at high altitudes to determine the flight altitude of the multi-rotor drone 10, preventing the drone from being too far from the fire. Before the fire extinguishing operation, several fire extinguishing bombs are loaded through the loading structure 501. Then, during the fire extinguishing operation, the drone platform activates the belt drive structure 503, which drives multiple energy-storing ejection structures 504 connected to the belt drive structure 503. The large impact force generated by the energy-storing ejection propels the fire extinguishing bombs located at the discharge port inside the loading structure 501, releasing them precisely into the fire area (the base of the flames or the center of the fire source) through the impact force, avoiding the problem of the fire extinguishing bombs being deflected due to the heat convection generated by the flames. Meanwhile, when the belt drive structure 503 is in operation, it can also drive the isolation feeding structure 505 through the first toothed belt 5030 to move the fire extinguishing bombs stored inside the loading structure 501 to the discharge port area of ​​the loading structure 501 in sequence, and automatically block the subsequent fire extinguishing bombs after the movement is completed, so as to avoid the problem of multiple fire extinguishing bombs blocking the discharge port position inside the loading structure 501.

[0023] It should be noted that when the belt drive structure 503 is in operation, it can also drive the atomizing fire extinguishing structure 506 to operate, spraying the liquid stored in the water tank 502 onto the flames through atomization spraying to extinguish the fire.

[0024] For details, please refer to the following: Figure 6 The support leg structure 40 includes an L-shaped mounting base 401, which is installed on the front and rear sides inside the multi-rotor UAV body 10 by screws. A transverse rod 402 is installed at the bottom of the L-shaped mounting base 401. The transverse rod 402 is installed at the bottom of the multi-rotor UAV body 10. Lightweight steel support legs 403 are welded and fixed to the bottom of the transverse rod 402. Two lightweight steel support legs 403 are provided.

[0025] In the intelligent fire-fighting heavy-duty multi-rotor fire extinguishing drone of the present invention, the design of the lightweight steel support legs 403 allows for convenient placement on the drone platform when fire extinguishing bombs, water, or the multi-rotor drone body 10 need to be charged or maintained.

[0026] For details, please refer to the following: Figure 13The loading structure 501 includes a lightweight vertical steel plate 5011, which is installed on the bottom of the multi-rotor UAV body 10 by screws. A lightweight intermediate support 5012 is installed and fixed on the inner side of the lightweight vertical steel plate 5011. A lightweight bottom plate 5013 is installed on the bottom of the lightweight intermediate support 5012 by screws. The lightweight bottom plate 5013 is installed on the bottom of the lightweight vertical steel plate 5011. A loading track 5014 is installed on the bottom of the lightweight bottom plate 5013. Loading channels 5015 are installed on the left and right sides of the loading track 5014, and the loading channels 5015 extend to the outer side of the lightweight bottom plate 5013.

[0027] In this design, a belt drive structure 503 is installed on the inner side of the lightweight vertical steel plate 5011, a partition feeding structure 505 is movably connected to the side of the lightweight intermediate support 5012, an energy storage ejection structure 504 is provided on the top of the loading channel 5015, the partition feeding structure 505 extends into the interior of the loading track 5014, and a mist extinguishing structure 506 is installed at the center of the interior of the lightweight intermediate support 5012. A feeding channel 50131 is provided at the center of the top of the lightweight bottom plate 5013, and the fire extinguishing bomb is transported to the interior of the loading track 5014 through the feeding channel 50131. The loading track 5014 has an "H" shaped structure, a conical protrusion 50141 is provided at the center of the interior of the loading track 5014, and the inner bottom of the loading track 5014 is a first inclined surface 50142, which drives the fire extinguishing bomb to move into the interior of the loading channel 5015.

[0028] In the intelligent fire-fighting heavy-duty multi-rotor fire extinguishing drone of the present invention, when loading fire extinguishing bombs, the fire extinguishing bombs are first placed inside the feeding channel 50131. The curvature of the feeding channel 50131 causes the fire extinguishing bombs to enter the loading track 5014. The fire extinguishing bombs entering the loading track 5014 first contact the conical protrusion 50141. The inclined surface of the conical protrusion 50141 randomly transmits the fire extinguishing bombs to various areas within the loading track 5014, causing adjacent fire extinguishing bombs entering the same area to abut against each other. At this time, the first inclined surface 50142 inside the loading track 5014 allows the fire extinguishing bombs to move automatically and enter the loading channel 5015.

[0029] For details, please refer to the following: Figure 10 , Figure 11 and Figure 12The belt drive structure 503 includes a linear drive source 5031, which is installed at the bottom of the multi-rotor UAV body 10. The output end of the linear drive source 5031 is connected to a first gear 5032, and the bottom of the first gear 5032 is meshed with a second gear 5033. A lead screw drive rod 5034 is connected to the second gear 5033 and is rotatably connected to the inner side of a lightweight vertical steel plate 5011. The outer side of the lead screw drive rod 5034 is open to... A second toothed belt 5035 is connected via a synchronous pulley. A linear rotating rod 5036 is connected to the inner side of the second toothed belt 5035 via a synchronous pulley. The linear rotating rod 5036 is rotatably connected to the inner side of a lightweight vertical steel plate 5011. A misting fire extinguishing structure 506 is connected to the outer side of a lead screw drive rod 5034 via ball bearings. A first toothed belt 5030 is connected to the outer synchronous pulley of the lead screw drive rod 5034. Energy storage ejection structures 504 are installed at the left and right ends of the lead screw drive rod 5034 and the linear rotating rod 5036.

[0030] In the intelligent fire-fighting heavy-duty multi-rotor fire extinguishing drone of the present invention, when it is necessary to eject and release fire extinguishing projectiles, the linear drive source 5031 is activated, driving the first gear 5032 connected to the output end of the linear drive source 5031 to rotate, and causing the second gear 5033 meshing with the first gear 5032 to rotate. When the second gear 5033 rotates, the lead screw drive rod 5034 connected through it rotates, driving the second toothed belt 5035 connected to the outside of the lead screw drive rod 5034 through the synchronous pulley to operate, causing the linear rotating rod 5036 connected to the inside of the second toothed belt 5035 through the synchronous pulley to rotate.

[0031] For details, please refer to the following: Figure 12 and Figure 14The energy storage catapult structure 504 includes a rotating disk 5041, which is connected to a lead screw drive rod 5034 and a linear rotating rod 5036. The left and right sides of the rotating disk 5041 protrude outwards, forming protrusions 5042. A movable disk 5043 is rotatably connected to the side of a lightweight vertical steel plate 5011. The side of the movable disk 5043 is rotatably connected to the rotating disk 5041. The lead screw drive rod 5034 and the linear rotating rod 5036 are internally arranged in the movable disk 5043. An eccentric protrusion 5044 is installed on the movable disk 5041. At the eccentric side of 043, the movable disc 5043 is rotated via the protrusion 5042. A metal arm 5045 is rotatably connected to the eccentric side of the movable disc 5043. A vertical ejector rod 5046 is rotatably connected to the bottom of the metal arm 5045. The vertical ejector rod 5046 is slidably connected to the outside of the lightweight vertical steel plate 5011. A rubber trigger block 5047 is installed at the bottom of the vertical ejector rod 5046. The rubber trigger block 5047 extends into the interior of the loading channel 5015 and triggers the movement of the fire extinguishing bomb inside the loading channel 5015.

[0032] In this design, a lifting baffle 50461 is installed on the outer side of the vertical launch rod 5046. The lifting baffle 50461 is slidably connected to the center of the outer side of the lightweight vertical steel plate 5011. An energy storage spring 50462 is connected to the top of the lifting baffle 50461. The energy storage spring 50462 is sleeved on the outer side of the vertical launch rod 5046 and installed on the outer side of the lightweight vertical steel plate 5011.

[0033] In the intelligent firefighting heavy-duty multi-rotor fire extinguishing drone of the present invention, when the lead screw drive rod 5034 and the linear rotating rod 5036 rotate, they will drive the rotating disk 5041 connected to the side of the lead screw drive rod 5034 and the linear rotating rod 5036 to rotate. At this time, when the rotating disk 5041 rotates, the protrusion 5042 installed on its outer side will rotate. When the protrusion 5042 comes into contact with the eccentric protrusion 5044, it will drive the protrusion 5042 and the movable disk 5043 to rotate. When the movable disk 5043 moves, it will drive the metal arm 5045 rotatably connected to its eccentric side to move, so that the vertical catapult rod 5046 rotatably connected to the bottom of the metal arm 5045 will move up and down, and squeeze the energy storage spring 50462 on the outer side of the vertical catapult rod 5046.

[0034] When the movable disc 5043 rotates 180 degrees, it will release elastically due to the lack of obstruction caused by the elastic accumulation of the energy storage spring 50462. This will cause the vertical ejection rod 5046 and the rubber trigger block 5047 to extend and retract rapidly, so that the fire extinguishing bullet that is in contact with the bottom of the rubber trigger block 5047 is ejected from the inside of the loading channel 5015. At the same time, the movable disc 5043 returns to its initial position.

[0035] For details, please refer to the following: Figure 15 The partition feeding structure 505 includes a rotating rod 5051, which is rotatably connected to the inside of the lightweight intermediate support 5012. The rotating rod 5051 is connected to the inside of the first toothed belt 5030 via an outer synchronous pulley. A rotating disk 5052 is connected to the side of the rotating rod 5051, and the rotating disk 5052 is rotatably connected to the side of the lightweight bottom plate 5013. A lower connecting arm 5053 is rotatably connected to the eccentric part of the side of the rotating disk 5052. A connecting seat 5054 is rotatably connected to the bottom of the lower connecting arm 5053. A partition plate 5055 is installed at the bottom of the connecting seat 5054 by screws. The partition plate 5055 extends into the inside of the loading channel 5015 and is slidably connected to the lightweight bottom plate 5013.

[0036] In the intelligent firefighting heavy-duty multi-rotor fire extinguishing drone of the present invention, when the lead screw drive rod 5034 and the linear rotating rod 5036 rotate, they drive the first toothed belt 5030 connected to the outer side via the synchronous pulley to operate, causing the rotating rod 5051 connected to the inner side of the first toothed belt 5030 via the synchronous pulley to rotate. When the rotating rod 5051 rotates, the rotating disk 5052 connected to its side rotates, driving the lower connecting arm 5053 rotatably connected to the eccentric side of the rotating disk 5052 to operate, causing the connecting seat 5054 and the partition plate 5055 rotatably connected to the bottom of the lower connecting arm 5053 to move up and down.

[0037] When the partition plate 5055 moves upward, the fire extinguishing bomb blocked on its side will move through the first inclined plane 50142 into the interior of the loading channel 5015. At the same time, after one upward operation is completed, it will descend and block the channel inside the loading track 5014 again.

[0038] For details, please refer to the following: Figure 16 and Figure 17The atomizing fire extinguishing structure 506 includes a spray canister 5061, which is installed at the center inside a lightweight intermediate support 5012. An inlet nozzle 5062 is installed on the top of the spray canister 5061, and the inlet nozzle 5062 is connected to a water tank 502 via a hose. A spray piston 5063 is movably disposed inside the spray canister 5061, and a tail rod 5064 is connected to the bottom of the spray piston 5063, extending to the water tank 502. The outer side; L-shaped connecting arm 5065, which is connected to the tail rod 5064. The L-shaped connecting arm 5065 is connected to the outer side of the lead screw drive rod 5034 by ball bearings. The side of the injection piston 5063 is equipped with a flow rate control module 5066. The side of the flow rate control module 5066 is connected to an atomizing nozzle 5067. The atomizing nozzle 5067 atomizes the liquid and sprays it through a water curtain nozzle 5068 installed at the nozzle of the atomizing nozzle 5067.

[0039] In the intelligent fire-fighting heavy-duty multi-rotor fire-fighting drone of the present invention, when the lead screw drive rod 5034 rotates, the L-shaped connecting arm 5065 connected by ball bearings on its outer side will operate, driving the tail rod 5064 and the injection piston 5063 connected to the bottom of the L-shaped connecting arm 5065 to extend and retract inside the injection tank 5061, squeezing the liquid inside the injection tank 5061 and accelerating it out from one side of the flow rate control module 5066. By accelerating the impact force through the atomizing nozzle 5067 and the water curtain nozzle 5068, the fire-fighting operation is achieved.

[0040] The liquid located inside the water storage tank 502 can be pumped into the spray tank 5061 by the suction force generated by the inlet 5062.

[0041] Example 2 For details, please refer to the following: Figure 18 In order to support the fire extinguishing bombs that move into the loading channel 5015, an embedded ring 60 is installed at the bottom of the loading channel 5015. A side pressure block 601 extending to the inside is installed inside the embedded ring 60. The top of the side pressure block 601 is set as an inclined surface, and the fire extinguishing bomb is supported by the inclined surface. A return spring 602 is connected to the outside of the side pressure block 601, and the return spring 602 is connected to the inside of the embedded ring 60.

[0042] In the intelligent fire-fighting heavy-duty multi-rotor fire extinguishing drone of the present invention, after the fire extinguishing bomb moves into the interior of the loading channel 5015, it will land on the top of the side pressure block 601 and be supported by the annularly arranged side pressure block 601. When the rubber trigger block 5047 collides and squeezes the fire extinguishing bomb, the fire extinguishing bomb will squeeze the side pressure block 601 at its bottom, moving the fire extinguishing bomb from the top of the side pressure block 601 and storing energy to be ejected to the bottom of the loading channel 5015. After the release of one fire extinguishing bomb, the return spring 602 can generate an elastic restoring force, causing the telescopically moving side pressure block 601 to return to its initial position and support the next fire extinguishing bomb.

[0043] Example 3 The fire extinguishing bomb of this invention adopts an elastic mesh structure and is spherical in shape. The top of the spherical fire extinguishing bomb is set as a horizontal plane, which, together with the elastic mesh structure, forms a collision platform. Two symmetrically arranged temperature detection and triggering units are installed on the outside of the spherical fire extinguishing bomb. By detecting the temperature of the external environment, the temperature detection and triggering units are activated, triggering the fire extinguishing bomb to explode and perform fire extinguishing operations. The fire extinguishing bomb is filled with fire extinguishing agent.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0045] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0046] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A smart firefighting drone with a large payload capacity, characterized in that: include: The multi-rotor drone body (10); a high-definition camera unit (20) mounted at the front end of the multi-rotor drone body (10); a temperature and humidity sensing unit (30) mounted at the rear end of the multi-rotor drone body (10); a support leg structure (40) mounted on the bottom of the multi-rotor drone body (10) by screws; and a liquid spraying and fire extinguishing device (50) mounted on the bottom of the multi-rotor drone body (10) and located inside the support leg structure (40) by screws, wherein the liquid spraying and fire extinguishing device (50) is filled with fire extinguishing bombs. The spraying and delivery fire extinguishing device (50) includes: a loading structure (501) mounted on the bottom of the multi-rotor UAV body (10) by screws; water tanks (502) installed on the front and rear sides inside the loading structure (501); a belt drive structure (503) installed on the top inside the loading structure (501); and an energy storage ejection structure (504) connected to the belt drive structure (503) and movably connected to the front and rear sides of the loading structure (501), wherein the energy storage ejection structure (504) triggers the fire extinguishing device inside the loading structure (501). The fire projectile is energized and launched; a first toothed belt (5030) is connected to the outside of the belt drive structure (503) via a synchronous pulley; a partitioned feeding structure (505) is connected to the inside of the first toothed belt (5030) via a synchronous pulley and extends into the loading structure (501); an atomizing fire extinguishing structure (506) is connected to the outside of the belt drive structure (503) via ball bearings, the atomizing fire extinguishing structure (506) is installed at the center inside the loading structure (501), and the atomizing fire extinguishing structure (506) is connected to the water tank (502). The multi-rotor drone body (10) is connected to the drone platform via radio, and the drone platform controls the flight attitude of the multi-rotor drone body (10) and the operation of the liquid spraying and fire extinguishing device (50).

2. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 1, characterized in that: The supporting leg structure (40) includes: L-shaped mounting base (401), the L-shaped mounting base (401) is installed on the front and rear sides inside the multi-rotor UAV body (10) by screws, and a horizontal bar (402) is installed at the bottom of the L-shaped mounting base (401). Lightweight steel support leg (403) is welded and fixed to the bottom of the horizontal bar (402), and two lightweight steel support legs (403) are provided.

3. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 1, characterized in that: The loading structure (501) includes: A lightweight vertical steel plate (5011) is installed at the bottom of the multi-rotor UAV body (10) by screws, and a lightweight intermediate support (5012) is installed and fixed on the inner side of the lightweight vertical steel plate (5011). A lightweight bottom plate (5013) is installed on the bottom of the lightweight intermediate support (5012) by screws. The lightweight bottom plate (5013) is installed on the bottom of the lightweight vertical steel plate (5011). A loading rail (5014) is installed on the bottom of the lightweight bottom plate (5013). The loading track (5014) is equipped with loading channels (5015) on both the left and right sides, and the loading channels (5015) extend to the outside of the lightweight bottom plate (5013).

4. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 3, characterized in that: A belt drive structure (503) is installed on the inner side of the lightweight vertical steel plate (5011). A partition feeding structure (505) is movably connected to the side of the lightweight intermediate support (5012). An energy storage ejection structure (504) is provided on the top of the loading channel (5015). The partition feeding structure (505) extends into the interior of the loading track (5014). A misting fire extinguishing structure (506) is installed at the center of the interior of the lightweight intermediate support (5012). The lightweight bottom plate (5013) has a feeding channel (50131) at the center of its top, through which the fire extinguishing bomb is transported to the interior of the loading track (5014). The loading track (5014) is H-shaped, and a conical protrusion (50141) is provided at the center of the loading track (5014). The bottom of the loading track (5014) is a first inclined surface (50142), and the fire extinguishing bomb is moved to the interior of the loading channel (5015) through the first inclined surface (50142).

5. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 4, characterized in that: The belt drive structure (503) includes: A linear drive source (5031) is installed at the bottom of the multi-rotor UAV body (10). The output end of the linear drive source (5031) is connected to a first gear (5032), and the bottom of the first gear (5032) is meshed with a second gear (5033). A lead screw drive rod (5034) is connected to the second gear (5033). The lead screw drive rod (5034) is rotatably connected to the inner side of the lightweight vertical steel plate (5011). The outer side of the lead screw drive rod (5034) is connected to a second toothed belt (5035) via a synchronous pulley. The inner side of the second toothed belt (5035) is connected to a linear rotating rod (5036) via a synchronous pulley. The linear rotating rod (5036) is rotatably connected to the inner side of the lightweight vertical steel plate (5011). The outer side of the lead screw drive rod (5034) is connected to a misting fire extinguishing structure (506) via ball bearings. The outer synchronous pulley of the lead screw drive rod (5034) is connected to a first toothed belt (5030). Energy storage ejection structures (504) are installed at the left and right ends of the lead screw drive rod (5034) and the linear rotating rod (5036).

6. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 5, characterized in that: The energy storage ejection structure (504) includes: Rotary disk (5041), the rotary disk (5041) is connected to the lead screw drive rod (5034) and the linear rotating rod (5036), the left and right sides of the rotary disk (5041) protrude outward and form protrusions (5042). The movable disk (5043) is rotatably connected to the side of the lightweight vertical steel plate (5011). The side of the movable disk (5043) is rotatably connected to the rotating disk (5041). The movable disk (5043) is internally provided with a lead screw drive rod (5034) and the linear rotating rod (5036). An eccentric protrusion (5044) is installed on the eccentric side of the movable disk (5043) and drives the movable disk (5043) to rotate through the protrusion (5042). A metal arm (5045) is rotatably connected to the eccentric side of the movable disk (5043). A vertical ejector rod (5046) is rotatably connected to the bottom of the metal arm (5045). The vertical ejector rod (5046) is slidably connected to the outside of the lightweight vertical steel plate (5011). A rubber trigger block (5047) is installed at the bottom of the vertical ejector rod (5046). The rubber trigger block (5047) extends into the interior of the loading channel (5015) and triggers the movement of the fire extinguishing bomb inside the loading channel (5015).

7. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 6, characterized in that: A lifting baffle (50461) is installed on the outside of the vertical ejection rod (5046). The lifting baffle (50461) is slidably connected to the center of the outside of the lightweight vertical steel plate (5011). An energy storage spring (50462) is connected to the top of the lifting baffle (50461). The energy storage spring (50462) is sleeved on the outside of the vertical ejection rod (5046) and installed on the outside of the lightweight vertical steel plate (5011).

8. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 4, characterized in that: The partition feeding structure (505) includes: A rotating rod (5051) is rotatably connected inside the lightweight intermediate support (5012). The rotating rod (5051) is connected to the inner side of the first toothed belt (5030) via an outer synchronous pulley. A rotating disk (5052) is connected to the side of the rotating rod (5051). The rotating disk (5052) is rotatably connected to the side of the lightweight bottom plate (5013). The lower connecting arm (5053) is rotatably connected to the eccentric part on the side of the rotating disk (5052). The bottom of the lower connecting arm (5053) is rotatably connected to the connecting seat (5054). The bottom of the connecting seat (5054) is fitted with a partition plate (5055) by screws. The partition plate (5055) extends into the interior of the loading channel (5015) and is slidably connected to the lightweight bottom plate (5013).

9. The intelligent firefighting heavy-duty multi-rotor fire extinguishing drone according to claim 5, characterized in that: The atomizing fire extinguishing structure (506) includes: A spray can (5061) is installed at the center inside the lightweight intermediate support (5012). An inlet (5062) is installed on the top of the spray can (5061). The inlet (5062) is connected to the water storage tank (502) via a hose. The injection piston (5063) is movably disposed inside the injection tank (5061), and a tail rod (5064) is connected to the bottom of the injection piston (5063), the tail rod (5064) extending to the outside of the water storage tank (502). L-shaped connecting arm (5065), which is connected to the tail rod (5064), is connected to the outside of the lead screw drive rod (5034) by ball bearings. The jet piston (5063) is equipped with a flow rate control module (5066) on its side. The flow rate control module (5066) is connected to an atomizing nozzle (5067) on its side. The atomizing nozzle (5067) atomizes the liquid and sprays it through a water curtain nozzle (5068) installed at the nozzle opening of the atomizing nozzle (5067).

Images