Ducted fire-fighting unmanned aerial vehicle and fire extinguishing system based on ducted fire-fighting unmanned aerial vehicle

Abstract

The utility model provides a ducted fire-fighting unmanned aerial vehicle and a fire extinguishing system based on the ducted fire-fighting unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles, the ducted fire-fighting unmanned aerial vehicle comprises a vehicle body, a thrust system, a lift system, an undercarriage and a task load system, the thrust system is horizontally mounted at the bottom of the vehicle body and comprises a thrust ducted fan device, the lift system is vertically mounted on the vehicle body, and the undercarriage is mounted on the aircraft body. Comprising an even number of lift force ducted fan devices which are arranged in a bilateral symmetry mode along the axis, and the lift force ducted fan device on the left side and the lift force ducted fan device at the corresponding position on the right side are opposite in rotation direction; the task load system comprises an adjustable injection device, a window breaker, a photoelectric pod, a camera, a searchlight and a megaphone which are installed on the machine body. The ducted fire-fighting unmanned aerial vehicle is a mooring unmanned aerial vehicle, the ducted fan is adopted, the structure is compact, the size is small, long-time operation can be achieved, and the overall working efficiency, reliability, safety, usability and maintainability are all improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles (UAVs), and in particular relates to a ducted fire-fighting UAV and a fire-fighting system based on the ducted fire-fighting UAV. Background Art

[0002] With the development of scientific progress and for the rational use of limited occupied area, most buildings are designed to be high-rise buildings. However, when a fire occurs in a high-rise building, it is difficult for firefighters to reach the scene from inside the building.

[0003] Currently, common high-rise firefighting and rescue methods include fire trucks, helicopters, and drones. Fire trucks with ladders are long, making them difficult to access and pass through. They are also expensive and require high maintenance, making them less widely available. Furthermore, ladders have a limited range, making it difficult to effectively extinguish fires, resulting in ineffective fire control and potentially greater damage. Using manned helicopters to carry firefighting media for firefighting and rescue operations is difficult due to the large propellers and limited amount of extinguishing media they carry.

[0004] Although the use of existing drones on the market for firefighting operations can overcome most of the above defects, the following problems still exist: (1) Existing non-tethered drones need to carry power batteries, which provide power to drive propellers to generate powered flight. Therefore, they are limited by factors such as load, volume and flight time, and their firefighting efficiency is low; (2) Most of the existing tethered drones have open rotor structures, with small lift for the same size, and because the open propellers are large in size, they are difficult to approach high-rise buildings; (3) Existing tethered drones are large in size and inconvenient to transport; (4) Existing tethered drones have no protective measures for their rotors and have low safety; (5) Existing tethered drones are affected by the recoil during spraying and the fire scene and surrounding environment during operation, and their flight state is unstable; (6) Existing tethered drones have single onboard functions and low ability to collect information and handle emergencies.

[0005] Therefore, how to overcome the problem of difficulty in extinguishing fires in high-rise buildings has become a key issue that needs to be addressed. Utility Model Content

[0006] The problem to be solved by the utility model is to provide a ducted fire-fighting drone and a fire-fighting system based on the ducted fire-fighting drone.

[0007] To solve the above technical problems, the utility model adopts the technical scheme: a kind of culvert fire-fighting unmanned plane, including body, thrust system, lifting force system, undercarriage and task load system, the thrust system is horizontally installed in the bottom of body, the thrust system includes thrust duct fan device, the lifting force system is vertically installed on body, the lifting force system includes even number of lifting force duct fan device, even number of the lifting force duct fan device is arranged along axis left-right symmetry, the rotation direction of left lifting force duct fan device and the lifting force duct fan device of right side corresponding position is opposite;The undercarriage is installed in the bottom of body, and the task load system includes adjustable injection device, window breaker, photoelectric pod, camera, searchlight and megaphone respectively installed on body.

[0008] Further, the thrust duct fan device includes thrust duct cylinder, thrust system protection cover, thrust duct fan and thrust motor, the thrust duct cylinder is installed in the bottom of body, the thrust motor is installed in the thrust duct cylinder, the output end of the thrust motor is provided with the thrust duct fan, and the output end of the thrust duct cylinder is provided with the thrust system protection cover.

[0009] Further, the thrust system includes two sets of thrust duct fan devices, the performance parameters of the thrust motors of the two sets of thrust duct fan devices are the same, the rotation speed of the thrust motor is proportional to the water injection pressure of the adjustable injection device, so that the recoil force of the adjustable injection device is equal to the propulsion force of the thrust duct fan, and the stability of the culvert fire-fighting unmanned plane is greatly improved.

[0010] Further, the lifting force duct fan device includes lifting force duct cylinder, lifting force duct fan, lifting force system protection cover and lifting motor, the lifting force duct cylinder is vertically installed on the body, the lifting motor is installed in the lifting force duct cylinder, the output end of the lifting motor is provided with the lifting force duct fan, and the output end of the lifting force duct cylinder is fixedly provided with the lifting force system protection cover.

[0011] Further, the lifting force system includes eight lifting force duct fan devices, the performance parameters of the lifting motors of the eight lifting force duct fan devices are the same, so that the eight lifting force duct fan devices have the same lifting force.

[0012] Further, the adjustable injection device includes a telescopic pipe, the adjustable injection device is installed at the bottom of the body and the water outlet position is arranged to protrude from the front end of the body;The window breaker is provided with two groups, and the two groups of window breakers are installed on the front of the body;The photoelectric pod is installed above the adjustable injection device, the camera is provided with a plurality of groups, and the plurality of groups of cameras are respectively installed at the front end, left side, right side, bottom and rear end of the body;The searchlight is provided with a plurality of groups, and the plurality of groups of searchlights are respectively installed at the front end and bottom of the body;The megaphone is installed at the bottom of the body.

[0013] Furthermore, the fuselage includes a bottom plate, a surrounding plate, a crossbeam, a crossbeam bulkhead, a skin, an antenna mounting plate and a bracket. The surrounding plate is arranged to surround the bottom plate, and the crossbeam and the crossbeam bulkhead are installed on the bottom plate. The cross-section of the crossbeam is C-shaped, and a number of brackets are installed on the crossbeam. The crossbeam and the crossbeam bulkhead are distributed in a cross-shaped manner. There is a certain distance between the crossbeams and the crossbeam bulkheads. There is a certain distance between the crossbeams and the crossbeam bulkheads. The skin is laid on the top of the surrounding plate so that the skin is fixed to the upper surface of the fuselage. The antenna mounting plate is installed on the skin above the center crossbeam bulkhead.

[0014] Furthermore, the present invention also includes an avionics system, a power supply electrical system and a measurement and control system, and the avionics system, the power supply electrical system and the measurement and control system are all installed on the aircraft body.

[0015] Furthermore, the avionics system includes a flight control system, a navigation system, an onboard power supply, a lighting system and a CAN driver board. The navigation system includes a laser navigation system, a millimeter-wave radar system, a black box, a global positioning system receiver, an inertial navigation system, a flight control computer, a terrain perception and obstacle avoidance system and a communication module; the onboard power supply includes a 6S lithium battery and a DC converter; the lighting system is installed at the bottom and around the fuselage; the power supply electrical system includes an emergency power battery, a power socket and a junction box; the measurement and control system consists of two heterogeneous measurement and control systems, namely a wired measurement and control system and a wireless measurement and control system, and both the wired measurement and control system and the wireless measurement and control system include a radio and a receiver.

[0016] The present utility model also provides a fire extinguishing system based on a ducted fire-fighting drone, comprising a ducted fire-fighting drone, a fire truck, a ground water supply system and a ground power supply system. The ducted fire-fighting drone is placed on the fire truck. The ground water supply system is used to provide a fire-fighting water source for the ducted fire-fighting drone. The ground water supply system comprises a booster water pump and a water pipe, and the water pipe is connected to an adjustable injection device of a mission load system; the ground power supply system is used to provide power for the ducted fire-fighting drone.

[0017] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0018] (1) The ducted firefighting UAV of the present invention is a tethered UAV and adopts a ducted fan. A ducted fan of the same diameter has higher aerodynamic efficiency than an open rotor and provides greater lift.

[0019] (2) The ducted firefighting drone of the present invention has a compact structure and a small size, is easy to couple to a vehicle, and has good vehicle passability and accessibility, so that the vehicle can adapt to existing public transportation roads and existing parking systems.

[0020] (3) The body of the ducted fire-fighting UAV of the utility model has high strength and low weight, which can reduce power, can bear the weight of the ducted fire-fighting UAV and has a protective effect on the lift system, etc.

[0021] (4) The ducted cylinder and protective cover of the utility model provide physical protection for the fan blades, and the utility model adopts a ground power supply system for power supply, which has the advantage of long-term operation.

[0022] (5) The eight lift ducted fan devices of the present invention are arranged symmetrically along the axis, ensuring that the center of gravity of the ducted firefighting drone is located on the central axis. This helps to stabilize the center of gravity of the ducted firefighting drone, making the overall structure compact, providing more concentrated driving force, and higher driving efficiency. The axis of the lift ducted fan device is arranged perpendicular to the body, so that during flight, the resistance encountered is small and the overall working efficiency is high.

[0023] (6) The water spraying time of the utility model is not limited, the entire system has high reliability, safety, ease of use and maintainability, and the solution cost is low.

[0024] (7) The utility model has a redundant design of the measurement and control system, power supply and electrical system, and lift system, which improves the safety of the ducted fire-fighting drone.

[0025] (8) The utility model's ducted firefighting drone has relatively complete onboard functions and safety features, and has a high level of control over its own status and environmental information, as well as the ability to handle emergencies. It is capable of flying in adverse environments and climates, and has improved adaptability to flight environments, resulting in greater market competitiveness.

[0026] (9) In addition to urban high-rise building fires, this utility model can also be expanded to be applied to extinguishing dangerous goods fires and marine ship fire accidents, and to rescue at high-rise building fire scenes, transporting materials, etc. At the same time, it also has broad space for communication, relay, and lighting in land and sea areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described in detail below with reference to the accompanying drawings and in combination with examples. The advantages and implementation methods of the present invention will become more apparent. The contents shown in the accompanying drawings are only used to illustrate the present invention and do not constitute any limitation to the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of the utility model of a ducted fire-fighting UAV.

[0029] Figure 2 It is a side view of the utility model ducted fire-fighting UAV.

[0030] Figure 3 It is a top view of the utility model ducted fire-fighting UAV.

[0031] Figure 4 It is a structural diagram of the body of the utility model.

[0032] Figure 5 It is a top view of the body of the utility model.

[0033] Figure 6 It is a structural diagram of the thrust system of the utility model.

[0034] Figure 7 It is a top view of the thrust system of the utility model.

[0035] Figure 8 It is a structural diagram of the lift system of the utility model.

[0036] Figure 9 It is a top view of the lift system of the utility model.

[0037] Figure 10 This is a schematic diagram of the layout of eight lift ducted fan devices of the present invention.

[0038] Figure 11 It is a schematic diagram of the layout of the mission payload system, avionics system, power supply and electrical system, and measurement and control system of the utility model.

[0039] Figure 12 It is a schematic diagram of the layout of the mission payload system of the utility model.

[0040] Figure 13 It is a top view of the layout of the mission payload system of the utility model.

[0041] Figure 14 It is a structural schematic diagram of the fire extinguishing system based on the ducted fire-fighting drone of the present invention.

[0042] In the picture:

[0043] 1. Ducted firefighting drone; 2. Fire truck; 3. Ground water supply system; 4. Ground power supply system; 11. Airframe; 12. Thrust system; 13. Lift system; 14. Landing gear; 15. Mission payload system; 16. Avionics system; 17. Power supply and electrical system; 18. Measurement and control system; 1101. Bottom plate; 1102. Coaming; 1103. Crossbeam; 1104. Crossbeam bulkhead; 1105. Skin; 1106. Antenna mounting plate; 1107. Bracket; 1201. Thrust duct cylinder; 1202. Thrust system protective cover; 1203. Thrust ducted fan; 1204. Mounting bracket I; 1205. Thrust motor; 1301. Lift duct cylinder; 1302. Lift ducted fan; 1303. Lift system protective cover; 1304. Lift motor; 1305. Mounting bracket II; 1501. Adjustable jet device; 1502. Window breaker; 1503. Electro-optical pod; 1504. Camera; 1505. Searchlight; 1506. Loudspeaker; 15011. Telescopic tube. DETAILED DESCRIPTION

[0044] like Figures 1 to 13 As shown, the utility model is a ducted fire-fighting UAV, which includes a body 11, a thrust system 12, a lift system 13, a landing gear 14 and a mission payload system 15. The thrust system 12, the lift system 13, the landing gear 14 and the mission payload system 15 are all installed and fixed on the body 11.

[0045] like Figure 6 and Figure 7 As shown, the thrust system 12 mainly provides thrust for the ducted fire-fighting UAV and is horizontally fixed to the bottom of the body 11 by bolts. The thrust system 12 includes two sets of thrust ducted fan devices, and the thrust ducted fan devices include a thrust duct cylinder 1201, a thrust system protective cover 1202, a thrust ducted fan 1203, a mounting bracket I 1204 and a thrust motor 1205. The mounting bracket Ⅰ1204 is fixed to the outside of the thrust duct cylinder 1201, and the thrust duct cylinder 1201 is mounted and fixed to the bottom of the body 11 through the mounting bracket Ⅰ1204. The thrust motor 1205 is mounted and fixed in the thrust duct cylinder 1201. The output end of the thrust motor 1205 is installed with a thrust duct fan 1203, and the output end of the thrust duct cylinder 1201 is installed and fixed with a thrust system protection cover 1202. The thrust system protection cover 1202 protects the blades of the thrust duct fan 1203 during firefighting operations, and can prevent foreign objects from damaging the blades. At the same time, it has a protective effect on the human body and can effectively protect personal safety.

[0046] The two thrust systems 12 are arranged symmetrically along the axis, facilitating a stable center of gravity. The thrust motors 1205 of the two ducted fan systems have identical performance parameters, ensuring equal thrust. Furthermore, adjusting the distance between the two ducted fan systems and the rotational speeds of the two thrust motors 1205 can control the flight angle.

[0047] like Figure 8 and Figure 9 As shown, the lift system 13 mainly provides lift for the ducted fire-fighting UAV. The lift system 13 includes eight lift ducted fan devices. The lift ducted fan device includes a lift duct cylinder 1301, a lift ducted fan 1302, a lift system protective cover 1303, a lift motor 1304 and a mounting bracket II 1305. The mounting bracket II 1305 is fixed to the outside of the lift duct cylinder 1301. The lift duct cylinder 1301 is vertically mounted on the body 11 through the mounting bracket II 1305. The lift motor 1304 is installed and fixed in the lift duct cylinder 1301. The lift ducted fan 1302 is installed at the output end of the lift motor 1304, and the lift system protective cover 1303 is installed and fixed at the output end of the lift duct cylinder 1301. The lift system protective cover 1303 protects the blades of the lift duct fan 1302 during firefighting operations, preventing foreign objects from damaging the blades. At the same time, it protects the human body and can effectively protect personal safety.

[0048] The performance parameters of the lift motors 1304 of the eight lift ducted fan devices are the same, ensuring that the eight lift ducted fan devices have the same lift.

[0049] Lift system 13 features a certain degree of lift redundancy. The eight ducted lift fan units are symmetrically arranged to ensure the ducted firefighting drone's center of gravity is centered on its central axis. This stabilizes the drone's center of gravity, resulting in a compact overall structure, more concentrated driving force, and higher efficiency. The axes of the ducted lift fan units are arranged perpendicular to the fuselage 11, minimizing drag during flight and improving overall efficiency.

[0050] like Figure 10 As shown, specifically, the installation positions of the eight lift ducted fan devices are the left first position, the left second position, the left third position, and the left fourth position on the left side of the axis and the right first position, the right second position, the right third position, and the right fourth position on the right side of the axis.

[0051] The four lift ducted fans 1302 on the left rotate in opposite directions to the four lift ducted fans 1302 on the right, generating a yaw moment. Specifically, when the lift ducted fans 1302 at the first, fourth, second, and third positions on the left rotate counterclockwise, the lift ducted fans 1302 at the first, second, third, and fourth positions on the right rotate clockwise. Alternatively, when the lift ducted fans 1302 at the first, fourth, second, and third positions on the left rotate clockwise, the lift ducted fans 1302 at the first, second, third, and fourth positions on the right rotate counterclockwise.

[0052] As can be seen, the lift system 13 has a certain degree of safety redundancy. For example, if the lift ducted fan unit in the first left position fails, the lift ducted fan units in the fourth right position are controlled to fail, ensuring equal lift on both sides of the ducted firefighting drone and preventing the drone from yaw and losing control. The remaining six lift ducted fan units can also provide sufficient lift to ensure the normal operation of the ducted firefighting drone.

[0053] Two sets of landing gears 14 are fixedly mounted on the bottom of the fuselage 11 via landing gear mounting plates, and the landing gears are C-shaped.

[0054] like Figure 12 and Figure 13 As shown, the mission payload system 15 includes an adjustable spray device 1501, two sets of window breakers 1502, an optoelectronic pod 1503, several sets of cameras 1504, several sets of searchlights 1505, and a loudspeaker 1506. The adjustable spray device 1501 includes a telescopic tube 15011; the two sets of window breakers 1502 are installed at the front of the fuselage 11; the optoelectronic pod 1503 is used for reconnaissance, surveillance, and target positioning; the several sets of cameras 1504 are installed at the front, left, right, bottom, and rear of the fuselage 11; the searchlights 1505 can provide long-range illumination and concentrated beams. Several sets of searchlights 1505 are installed at the front and bottom of the fuselage 11, providing clear illumination of the fire scene and the ground; and the loudspeaker 1506 is used for broadcast voice communication, assisting operators and command personnel in large-scale personnel mobilization and information transmission.

[0055] Among them, the rotation speed of the thrust motor 1205 is proportional to the water spray pressure of the adjustable injection device 1501, which makes the recoil of the adjustable injection device 1501 equal to the propulsion force of the thrust ducted fan 1203, greatly improving the stability of the ducted fire-fighting drone.

[0056] like Figure 4 and Figure 5As shown, the fuselage 11 includes a base plate 1101, a coaming 1102, a crossbeam 1103, a crossbeam bulkhead 1104, a skin 1105, an antenna mounting plate 1106, and brackets 1107. The coaming 1102 surrounds the base plate 1101, and the crossbeam 1103 and crossbeam bulkhead 1104 are mounted and fixed to the base plate 1101. The crossbeam 1103 has a C-shaped cross section and is mounted on a plurality of brackets 1107. The crossbeam 1103 and crossbeam bulkhead 1104 are arranged in a cross pattern, with a certain distance between each crossbeam 1103 and each crossbeam bulkhead 1104. This design provides the fuselage 11 with good strength. The skin 1105 is laid on top of the coaming 1102 and fixed to the upper surface of the fuselage 11. Circular mounting holes are provided on the bottom plate 1101, the skin 1105 and the enclosure 1102. The antenna mounting plate 1106 is bolted to the skin 1105 above the central beam bulkhead 1104.

[0057] In this embodiment, the skin 1105 is made of composite materials. Composite materials have high strength and low weight, which can reduce power. The main function of this design is to bear the weight of the ducted fire-fighting drone and protect the lift system 13, etc.

[0058] like Figure 11 As shown, the present invention further includes an avionics system 16 , a power supply and electrical system 17 and a measurement and control system 18 , and the avionics system 16 , the power supply and electrical system 17 and the measurement and control system 18 are all installed on the fuselage 11 .

[0059] The avionics system 16 includes a flight control system, a navigation system, an onboard power supply, a lighting system, and a CAN driver board.

[0060] The navigation system includes a laser navigation system, millimeter-wave radar system, black box, GPS receiver, inertial navigation system (INS), flight control computer, terrain awareness and obstacle avoidance system, and communication module. The laser navigation system offers high positioning accuracy, even in dark environments. The millimeter-wave radar system provides wireless detection and ranging capabilities, and boasts advantages such as small size, light weight, high spatial resolution, and strong anti-interference capabilities. The black box records various parameters of the aircraft during flight, as well as operator conversations.

[0061] The onboard power supply includes a 6S lithium battery and a DC converter. The main components of the DC converter are relays and resistors. The onboard power supply can provide power and convert voltage levels for the avionics system.

[0062] The lighting system is installed at the bottom and around the machine body 11, and can timely feedback the working state of the tunnel fire-fighting unmanned aerial vehicle.

[0063] The CAN drive board is a device that can be connected to a controller area network.

[0064] The power supply electrical system 17 includes an emergency power battery and multiple groups of power sockets and multiple groups of junction boxes, and when the ground power supply system 4 abnormally, the control system starts the emergency power battery to supply power for the tunnel fire-fighting unmanned aerial vehicle.

[0065] The core element of the measurement and control system 18 is a radio station and a receiver, which can realize remote control, remote measurement and information transmission of the tunnel fire-fighting unmanned aerial vehicle. The measurement and control system 18 adopts a redundant design, which improves the safety of the tunnel fire-fighting unmanned aerial vehicle. That is, the tunnel fire-fighting unmanned aerial vehicle has two sets of heterogeneous measurement and control systems, which are a wired measurement and control system and a wireless measurement and control system. One of the measurement and control systems is the main scheme, and the other is the standby scheme. That is, when one of the measurement and control systems fails, the other measurement and control system starts.

[0066] As shown in Figure 14 The utility model also provides a kind of fire extinguishing system based on tunnel fire-fighting unmanned aerial vehicle, including tunnel fire-fighting unmanned aerial vehicle 1, fire engine 2, ground water supply system 3 and ground power supply system 4.

[0067] Tunnel fire-fighting unmanned aerial vehicle 1 is placed on fire engine 2, and fire engine 2 can transport tunnel fire-fighting unmanned aerial vehicle 1;Ground water supply system 3 is used to provide fire water source for tunnel fire-fighting unmanned aerial vehicle 1, and the ground water supply system 3 includes booster water pump and water pipe, and the water pipe is connected with the adjustable injection device of task load system;Ground power supply system 4 is used to provide power supply for tunnel fire-fighting unmanned aerial vehicle 1, and can provide power supply for wired measurement and control system.

[0068] In this embodiment, the length of tunnel fire-fighting unmanned aerial vehicle 1 is not more than 2.6 meters, the width is not more than 2 meters, and the height is not more than 1 meter. The length of fire engine 2 is not more than 10.3 meters, the width is not more than 2.55 meters, and the height is not more than 3.4 meters. The water spraying height of tunnel fire-fighting unmanned aerial vehicle 1 can reach 200-300 meters at most.

[0069] The working process of the present application is as follows:

[0070] When performing high-level fire-fighting tasks, fire engine 2 transports tunnel fire-fighting unmanned aerial vehicle 1 to the fire-fighting site, ground power supply system 4 provides power supply for tunnel fire-fighting unmanned aerial vehicle 1, the task load system 15 of tunnel fire-fighting unmanned aerial vehicle 1 is connected with ground water supply system 3, and the water path is connected.

[0071] The lift system 13 provides the required lift, allowing the ducted firefighting drone 1 to reach the desired altitude. The thrust system 12 provides forward momentum and offsets the recoil caused by the water spray. By adjusting the motor speeds of the lift system 13 and thrust system 12, the ducted firefighting drone 1 can be adjusted to move forward, backward, turn left, or turn right, ultimately reaching the desired location.

[0072] Then the window breaker 1502 launches a window-breaking head to shatter the glass of the building.

[0073] The mission payload system 15 is connected to the ground water supply system 3, connected to the water source, and performs the firefighting task. During the firefighting process, the water spray angle is adjusted by adjusting the length of the telescopic tube 15011.

[0074] During the mission, the thrust system 12 at the tail of the ducted fire-fighting drone 1 is turned on to offset the recoil force generated by the adjustable spray device 1501 due to the water spraying. The thrust system 12 provides the ducted fire-fighting drone 1 with power to move forward and backward.

[0075] During firefighting missions, the optoelectronic pod 1503 plays a vital role in reconnaissance, surveillance, and target location. Multiple cameras 1504 are located on the front, left, right, rear, and bottom of the aircraft body 11. The front, left, and right cameras 1504 provide real-time feedback and record fire scene information. The bottom camera 1504 provides real-time feedback and record ground rescue information. Multiple cameras 1504 capture and record images for analysis and decision-making by operators and command personnel.

[0076] The searchlight 1505 can provide long-distance lighting and provide concentrated light beams. Multiple groups of searchlights 1505 are respectively arranged at the front end and bottom of the body 11, which can provide clear lighting for the fire scene and the ground.

[0077] The loudspeaker 1506 can realize broadcast voice communication, assisting the operation and command personnel to realize large-scale personnel mobilization and information transmission.

[0078] When performing firefighting tasks, the measurement and control system 18 remotely controls, telemeters, and transmits information to the ducted firefighting drone 1. Through the ground controller, the operator can remotely control the take-off, landing, flight path adjustment and other functions of the ducted firefighting drone 1; it can detect various parameters of the ducted firefighting drone 1 in real time, such as altitude, speed, attitude, power, etc., and can transmit these data to the ground control station or cloud server for analysis and processing; it can obtain the location information of the ducted firefighting drone 1 in real time through the built-in tracking and positioning equipment to ensure that the ducted firefighting drone 1 flies within the predetermined area.

[0079] The black box records various parameter information of the ducted fire-fighting drone 1 during the flight and the operator's communication information.

[0080] The above embodiments of the present invention are described in detail, but the above contents are only preferred embodiments of the present invention and should not be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A ducted firefighting drone, characterized by: It includes a fuselage, a thrust system, a lift system, a landing gear and a mission load system, wherein the thrust system is horizontally installed at the bottom of the fuselage, the thrust system includes a thrust ducted fan device, the lift system is vertically installed on the fuselage, the lift system includes an even number of lift ducted fan devices, and the even number of lift ducted fan devices are arranged symmetrically along the axis, and the lift ducted fan device on the left has an opposite rotation direction to the lift ducted fan device at the corresponding position on the right; the landing gear is installed at the bottom of the fuselage, and the mission load system includes an adjustable jet device, a window breaker, an optoelectronic pod, a camera, a searchlight and a loudspeaker respectively installed on the fuselage.

2. The ducted firefighting drone according to claim 1, characterized in that: The thrust ducted fan device includes a thrust ducted cylinder, a thrust system protection cover, a thrust ducted fan and a thrust motor. The thrust ducted cylinder is installed at the bottom of the machine body, the thrust motor is installed in the thrust ducted cylinder, the thrust ducted fan is installed at the output end of the thrust motor, and the thrust system protection cover is installed at the output end of the thrust ducted cylinder.

3. The ducted firefighting drone according to claim 2, characterized in that: The thrust system includes two sets of thrust ducted fan devices, and the performance parameters of the thrust motors of the two sets of thrust ducted fan devices are the same; the rotation speed of the thrust motor is proportional to the water spray pressure of the adjustable injection device.

4. The ducted firefighting drone according to claim 1, characterized in that: The lift ducted fan device includes a lift ducted cylinder, a lift ducted fan, a lift system protective cover and a lift motor. The lift ducted cylinder is vertically installed on the machine body, the lift motor is installed in the lift ducted cylinder, the lift ducted fan is installed at the output end of the lift motor, and the lift system protective cover is fixedly installed at the output end of the lift ducted cylinder.

5. The ducted firefighting drone according to claim 4, characterized in that: The lift system includes eight lift ducted fan devices, and the performance parameters of the lift motors of the eight lift ducted fan devices are the same.

6. The ducted firefighting drone according to claim 1, characterized in that: The adjustable spray device includes a telescopic tube, which is installed at the bottom of the body and the water outlet extends out of the front end of the body; two groups of window breakers are provided, and both groups of window breakers are installed at the front of the body; the photoelectric pod is installed above the adjustable spray device, and several groups of cameras are provided, and several groups of cameras are respectively installed at the front end, left side, right side, bottom and rear end of the body; several groups of searchlights are provided, and several groups of searchlights are respectively installed at the front end and bottom of the body; the loudspeaker is installed at the bottom of the body.

7. The ducted firefighting drone according to claim 1, characterized in that: The fuselage includes a bottom plate, a surrounding plate, a beam, a beam bulkhead, a skin, an antenna mounting plate and a bracket. The surrounding plate is arranged to surround the bottom plate, and the beam and beam bulkhead are installed on the bottom plate. The cross section of the beam is C-shaped, and a number of brackets are installed on the beam. The beam and beam bulkhead are distributed in a cross pattern, and there is a certain distance between the beams and the beam bulkheads. There is a certain distance between the beams and the beam bulkheads. The skin is laid on the top of the surrounding plate to fix the skin on the upper surface of the fuselage. The antenna mounting plate is installed on the skin above the center beam bulkhead.

8. The ducted firefighting drone according to claim 1, characterized in that: It also includes an avionics system, a power supply electrical system and a measurement and control system, which are all installed on the aircraft body.

9. The ducted firefighting drone according to claim 8, characterized in that: The avionics system includes a flight control system, a navigation system, an onboard power supply, a lighting system and a CAN driver board. The navigation system includes a laser navigation system, a millimeter-wave radar system, a black box, a global positioning system receiver, an inertial navigation system, a flight control computer, a terrain perception and obstacle avoidance system and a communication module; the onboard power supply includes a 6S lithium battery and a DC converter; the lighting system is installed at the bottom and around the fuselage; the power supply electrical system includes an emergency power battery, a power socket and a junction box; the measurement and control system consists of two heterogeneous measurement and control systems, namely a wired measurement and control system and a wireless measurement and control system, and both the wired measurement and control system and the wireless measurement and control system include a radio and a receiver.

10. A fire extinguishing system based on a ducted firefighting drone, comprising the ducted firefighting drone according to any one of claims 1 to 9, characterized in that: It includes a ducted fire-fighting drone, a fire truck, a ground water supply system and a ground power supply system. The ducted fire-fighting drone is placed on the fire truck. The ground water supply system is used to provide fire water for the ducted fire-fighting drone. The ground water supply system includes a booster water pump and a water pipe. The water pipe is connected to the adjustable injection device of the mission load system; the ground power supply system is used to provide power for the ducted fire-fighting drone.

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