Unmanned aerial vehicle capable of launching fire extinguishing bullets

Abstract

The utility model provides an unmanned aerial vehicle capable of launching fire extinguishing bullets. The unmanned aerial vehicle comprises a vehicle body; the power assembly is arranged on the machine body and can drive the machine body to fly; the shot bin is arranged on the machine body and can be used for containing fire extinguishing shots, a shot outlet is formed in the lower portion of the shot bin, and the shot outlet is connected with a conveying channel pipe; and an inlet of the launching mechanism is connected with the lower end of the conveying channel pipe, the fire extinguishing shots in the shot bin can enter the launching mechanism along the conveying channel pipe, and when the launching mechanism works, the fire extinguishing shots from the conveying channel pipe can be launched out of an outlet of the launching mechanism. By the adoption of the fire extinguishing device, the projectiles in the projectile bin are continuously guided into the launching mechanism through the conveying channel pipe, the launching mechanism conducts continuous launching, fire extinguishing operation can be conducted through safe operation far away from a fire source, firefighters are prevented from being directly exposed in the high-temperature or smog or dangerous environment, and the rescue risk is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically to a UAV capable of launching fire extinguishing projectiles. Background Technology

[0002] With the acceleration of urbanization and the increase in high-rise buildings, the frequency and severity of fire accidents are also constantly increasing. Traditional fire-fighting equipment often suffers from slow response speed, limited coverage, and high personnel safety risks when facing high-rise building fires, forest fires, or hazardous chemical fires. The rapid development of drone technology has provided new solutions for fire rescue, but its application in the field of firefighting is still in its early stages. Existing fire-fighting drones mostly use the method of spraying extinguishing agents, which has shortcomings such as low fire-fighting efficiency, limited coverage, and difficulty in dealing with complex fire situations.

[0003] To address the aforementioned issues, designing a drone capable of launching fire-extinguishing projectiles has become an important technological direction for improving fire rescue efficiency and reducing personnel risks. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a drone capable of launching fire extinguishing projectiles, thereby improving fire rescue efficiency and reducing personnel risks.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0006] This utility model provides a drone capable of launching fire extinguishing projectiles, including:

[0007] Organism;

[0008] The powertrain is mounted on the fuselage and can drive the fuselage to fly.

[0009] A projectile magazine, located on the machine body and used to hold fire extinguishing projectiles, has a projectile outlet at the bottom and is connected to a conveying channel pipe.

[0010] The launching mechanism has an inlet connected to the lower end of the delivery channel pipe. Fire extinguishing projectiles in the projectile compartment can enter the launching mechanism along the delivery channel pipe. When the launching mechanism is working, it can launch the fire extinguishing projectiles from the delivery channel pipe out of the launching mechanism's outlet.

[0011] The beneficial effects of this utility model are:

[0012] This invention utilizes a delivery channel pipe to continuously guide projectiles from the projectile magazine to the launching mechanism, which then fires continuously. This allows for safe operation of firefighting operations away from the fire source, preventing firefighters from being directly exposed to high temperatures, smoke, or hazardous environments, significantly reducing rescue risks. Simultaneously, the rapid takeoff and landing and flexible flight capabilities of the drone enable rapid arrival at the fire scene, improving fire rescue efficiency. Furthermore, the fire extinguishing projectiles can be customized according to the type of fire, allowing for rapid replacement of different types of projectiles or replenishment of ammunition as needed, enhancing mission flexibility and execution efficiency.

[0013] Based on the above technical solution, the present invention can be further improved as follows.

[0014] Furthermore, it also includes:

[0015] A suspension frame is provided on the lower side of the machine body and extends downward;

[0016] The movable plate is coaxially hinged to the lower part of the suspension frame on its two opposite edges, and the launching mechanism is located on the movable plate;

[0017] The launch angle adjustment drive mechanism is located on the body. The output end of the launch angle adjustment drive mechanism is connected to the movable plate and can drive the movable plate to rotate around the hinge axis between the movable plate and the suspension frame.

[0018] Furthermore, mounting blocks are provided on the upper sides of the opposite two edges of the movable plate, and the hinge shaft between the movable plate and the suspension frame is located on the mounting blocks. This improves stability.

[0019] The movable plate rotates to drive the launch mechanism to tilt up and down, which makes it easy to adjust the pitch and launch angle of the launch mechanism and make it easier to aim at the ignition point, thus improving the accuracy of projectile launch; at the same time, the UAV can maintain a horizontal attitude and hover, with its own driving force and gravity collinear, resulting in good stability.

[0020] Furthermore, the emission angle adjustment drive mechanism includes:

[0021] A launching angle motor is hinged to the machine body, and the output end of the launching angle motor is provided with a downwardly extending screw;

[0022] The adjusting block is threadedly connected to the screw, and the outer side of the adjusting block is hinged to the movable plate; the hinge axis between the adjusting block and the movable plate, the hinge axis between the launch angle motor and the machine body, and the hinge axis between the movable plate and the suspension frame are parallel to each other and not coplanar.

[0023] The launch angle motor drives the adjusting block to move up and down via a screw. The hinge shaft between the two can compensate for changes in their relative angles. The adjusting block drives the movable plate to deflect up and down around its hinge shaft, which facilitates the adjustment of the pitch angle of the movable plate, thereby adjusting the pitch launch angle of the launch mechanism. This achieves precise control and good stability.

[0024] Furthermore, one end of the movable plate is provided with an extension, and the upper side of the extension is provided with a hinge seat. The outer side of the adjusting block is hinged to the hinge seat; the screw gradually moves away from the machine body from top to bottom.

[0025] This facilitates extending the torque from the adjustment block to the rotation center of the movable plate, reducing the load on the launch angle motor.

[0026] Furthermore, the inlet of the launching mechanism is arranged coaxially with the hinge axis between the movable plate and the suspension frame. The movable plate is also provided with a bearing seat. The lower end of the conveying channel pipe is provided with an arc-shaped elbow. The horizontal part of the arc-shaped elbow is connected to the bearing seat through a thin-walled bearing. The inner ring of the thin-walled bearing is directly opposite the inlet of the launching mechanism.

[0027] When the movable plate rotates up and down to drive the launching mechanism to adjust the pitch and launch angle, both the movable plate and the launching mechanism use the thin-walled bearings and hinge shafts arranged coaxially and the entrance of the launching mechanism as the rotation center, which avoids structural interference, ensures reliable movement, and prevents deformation of the channel from the delivery pipe to the inside of the launching mechanism, thus ensuring the smooth delivery of fire extinguishing projectiles.

[0028] Furthermore, the side wall of the conveying channel pipe is provided with a hollowed-out through groove.

[0029] To avoid air resistance within the delivery channel pipe affecting the delivery of fire extinguishing projectiles.

[0030] Furthermore, the launching mechanism includes:

[0031] Launch bracket;

[0032] The launch tube is located in the middle of the launch support, and friction grooves are provided on both sides of the launch tube;

[0033] The transmitting motor is mounted on the transmitting bracket and located on both sides of the transmitting tube. The output shaft of the transmitting motor is equipped with a friction wheel, and the wheel surface of the friction wheel is located in the friction groove.

[0034] The fire extinguishing projectiles in the delivery channel pipe are continuously delivered to the launching tube. When the fire extinguishing projectiles move to the friction channel, the launching motor drives the friction wheel to rotate at high speed. During the friction process between the friction wheel and the fire extinguishing projectiles, the power is transmitted to the fire extinguishing projectiles, thereby accelerating the launch of the fire extinguishing projectiles and realizing continuous and rapid launch, thus improving the fire extinguishing efficiency.

[0035] Furthermore, the friction wheels are located on opposite sides of the launching tube, and the two friction wheels are directly opposite each other.

[0036] The two friction wheels accelerate the fire extinguishing projectiles simultaneously, ensuring that the projectiles are subjected to uniform force and preventing them from impacting the launch tube.

[0037] Furthermore, the powertrain includes multiple support rods and multiple blade guards, which are evenly arranged around the body. One end of each support rod is connected to the body, and the other end is connected to the blade guard. A drive motor is located in the middle of the blade guard, and blades are mounted on the output shaft of the drive motor.

[0038] The propeller blades are driven by a drive motor, and the propeller blades use air buoyancy to propel the aircraft into flight; the propeller blades are protected by a blade guard. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of this utility model.

[0040] Figure 2 This is a schematic diagram of the hidden powertrain of this utility model.

[0041] Figure 3 for Figure 2 A schematic diagram of the structure viewed from the right.

[0042] Figure 4 for Figure 2 A schematic diagram of the structure viewed from the left.

[0043] In the accompanying drawings, the technical features represented by each reference numeral are as follows:

[0044] 1-Main body; 11-Suspension frame; 12-Modible plate; 13-Hinge seat; 14-Bearing seat; 15-Mounting block;

[0045] 2-Powertrain; 21-Support rod; 22-Drive motor; 23-Blade guard;

[0046] 3-Shot magazine; 4-Conveyor channel pipe; 41-Arched elbow; 42-Hollowed through groove;

[0047] 5- Launching mechanism; 51- Launching bracket; 52- Launching tube; 53- Launching motor; 54- Friction wheel;

[0048] 6-Emitting angle motor; 61-Screw; 62-Adjusting block. Detailed Implementation

[0049] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0050] This utility model refers to Figure 1-4 .

[0051] This utility model provides a drone capable of launching fire extinguishing projectiles, including:

[0052] Body 1;

[0053] The powertrain 2 is mounted on the body 1 and can drive the body 1 to fly;

[0054] The projectile compartment 3 is located on the body 1 and can be used to hold fire extinguishing projectiles. The lower part of the projectile compartment 3 is provided with a projectile outlet, and the projectile outlet is connected to a conveying channel pipe 4.

[0055] The launching mechanism 5 has its inlet connected to the lower end of the conveying channel pipe 4. The fire extinguishing projectiles in the projectile chamber 3 can enter the launching mechanism 5 along the conveying channel pipe 4. When the launching mechanism 5 is working, it can launch the fire extinguishing projectiles from the conveying channel pipe 4 from the outlet of the launching mechanism 5.

[0056] principle:

[0057] The airframe 1 and powertrain 2 can be ordinary drones available on the market. Under the guidance of this invention, the airframe 1 can be modified by adding a projectile magazine 3 and a launching mechanism 5. During operation, the projectile magazine 3 is filled with projectiles. The powertrain 2 drives the airframe 1 to the vicinity of the fire, aligning the outlet of the launching mechanism 5 with the fire point. The launching mechanism 5 then fires the fire extinguishing projectiles to the fire point. The fire extinguishing projectiles are existing technology products, filled with dry powder, gas, or other extinguishing substances suitable for various fire sources. When the projectiles impact the fire point or its vicinity, they explode, releasing the extinguishing substances for rapid fire suppression. Multiple drones can achieve joint firefighting operations through a collaborative control system, dividing tasks and cooperating to further improve firefighting efficiency in large-area or complex fire scenes.

[0058] This invention utilizes a delivery channel pipe 4 to continuously guide projectiles from the projectile magazine 3 to the launching mechanism 5, which then continuously fires the projectiles. This allows for safe operation of firefighting operations away from the fire source, preventing firefighters from being directly exposed to high temperatures, smoke, or dangerous environments, and significantly reducing rescue risks. Simultaneously, the rapid takeoff and landing and flexible flight capabilities of the drone enable rapid arrival at the fire scene, improving fire rescue efficiency. Furthermore, the fire extinguishing projectiles can be customized according to the type of fire, allowing for rapid replacement of different types of projectiles or replenishment of ammunition as needed, enhancing mission flexibility and execution efficiency.

[0059] Furthermore, it also includes:

[0060] The suspension bracket 11 is located on the lower side of the body 1 and extends downward;

[0061] The movable plate 12 is coaxially hinged to the lower part of the suspension frame 11 on its two opposite edges. The launching mechanism 5 is located on the movable plate 12. The launching angle adjustment drive mechanism is located on the body 1. The output end of the launching angle adjustment drive mechanism is connected to the movable plate 12 and can drive the movable plate 12 to rotate around the hinge axis between the movable plate 12 and the suspension frame 11.

[0062] Note: The emission angle adjustment drive mechanism can be a telescopic rod, and its output end can be movably connected to the movable plate 12 through a displacement compensation structure such as a short chain, slider, and long hole; other connection methods in the existing technology can also be found as needed. In this case, the conveying channel pipe 4 can be a flexible hose.

[0063] Furthermore, mounting blocks 15 are provided on the upper sides of the opposite two edges of the movable plate 12, and the hinge shaft between the movable plate 12 and the suspension frame 11 is located on the mounting blocks 15. This improves stability.

[0064] The rotating movable plate 12 drives the launch mechanism 5 to deflect up and down, which facilitates the adjustment of the pitch and launch angle of the launch mechanism 5, making it easier to aim the launch mechanism 5 at the ignition point and improving the accuracy of projectile launch; at the same time, the UAV can maintain a horizontal attitude and hover, with its own driving force and gravity collinear, resulting in good stability.

[0065] Furthermore, the emission angle adjustment drive mechanism includes:

[0066] The launching angle motor 6 is hinged to the body 1, and the output end of the launching angle motor 6 is provided with a downwardly extending screw 61;

[0067] Adjusting block 62 is threadedly connected to screw 61, and the outer side of adjusting block 62 is hinged to movable plate 12; the hinge axis between adjusting block 62 and movable plate 12, the hinge axis between launch angle motor 6 and body 1, and the hinge axis between movable plate 12 and suspension frame 11 are parallel to each other and not coplanar.

[0068] The launch angle motor 6 drives the adjusting block 62 to move up and down through the screw 61. The hinge shaft of the two can compensate for the relative angle changes. The adjusting block 62 drives the movable plate 12 to deflect up and down around its hinge shaft, which facilitates the adjustment of the pitch angle of the movable plate 12, thereby adjusting the pitch launch angle of the launch mechanism 5, achieving precise control and good stability.

[0069] Furthermore, one end of the movable plate 12 is provided with an extension, and a hinge seat 13 is provided on the upper side of the extension. The outer side of the adjusting block 62 is hinged to the hinge seat 13; the screw 61 gradually moves away from the machine body 1 from top to bottom.

[0070] This facilitates extending the torque from the adjustment block 62 to the rotation center of the movable plate 12, thereby reducing the load on the launch angle motor 6.

[0071] Furthermore, the inlet of the launching mechanism 5 is arranged coaxially with the hinge axis between the movable plate 12 and the suspension frame 11. The movable plate 12 is also provided with a bearing seat 14. The lower end of the conveying channel pipe 4 is provided with an arc-shaped elbow 41. The horizontal part of the arc-shaped elbow 41 is connected to the bearing seat 14 through a thin-walled bearing. The inner ring of the thin-walled bearing is directly opposite the inlet of the launching mechanism 5.

[0072] When the movable plate 12 rotates up and down to drive the launching mechanism 5 to adjust the pitch and launch angle, both the movable plate 12 and the launching mechanism 5 take the thin-walled bearing and hinge shaft arranged coaxially and the entrance of the launching mechanism 5 as the rotation center, which avoids structural interference, ensures reliable movement, and avoids deformation of the channel from the delivery channel pipe 4 to the inside of the launching mechanism 5, thus ensuring the smooth delivery of fire extinguishing projectiles.

[0073] Furthermore, the side wall of the conveying channel pipe 4 is provided with a hollowed-out through groove 42.

[0074] To avoid air resistance within the delivery channel pipe 4 affecting the delivery of fire extinguishing projectiles.

[0075] Furthermore, the launching mechanism 5 includes:

[0076] Launch bracket 51;

[0077] The launching tube 52 is located in the middle of the launching bracket 51, and friction grooves are provided on both sides of the launching tube 52;

[0078] The transmitting motor 53 is mounted on the transmitting bracket 51 and located on both sides of the transmitting tube 52. The output shaft of the transmitting motor 53 is equipped with a friction wheel 54, and the wheel surface of the friction wheel 54 is located in the friction groove.

[0079] The fire extinguishing projectiles in the delivery channel pipe 4 are continuously delivered to the launching tube 52. When the fire extinguishing projectiles move to the friction channel, the launching motor 53 drives the friction wheel 54 to rotate at high speed. During the friction process with the fire extinguishing projectiles, the friction wheel 54 transmits power to the fire extinguishing projectiles, thereby accelerating the launch of the fire extinguishing projectiles and realizing continuous and rapid launch, thus improving the fire extinguishing efficiency.

[0080] Furthermore, the friction wheels 54 are located on opposite sides of the launching tube 52, and the two friction wheels 54 are directly opposite each other.

[0081] The two friction wheels 54 accelerate the fire extinguishing projectiles simultaneously, ensuring that the projectiles are subjected to uniform force and preventing them from impacting the launch tube 52.

[0082] Furthermore, the powertrain 2 includes multiple support rods 21 and multiple blade guards 23. The blade guards 23 are evenly arranged around the body 1. One end of each support rod 21 is connected to the body 1, and the other end is connected to the blade guard 23. A drive motor 22 is provided in the middle of the blade guard 23, and blades are provided on the output shaft of the drive motor 22.

[0083] The propeller blades are driven by the drive motor 22, and the propeller blades can drive the aircraft 1 to fly by means of air buoyancy; the propeller blades are protected by the propeller blade shield 23.

[0084] In the description of this utility model, it should be understood that if descriptive terms indicating orientation, direction, or positional relationship appear, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of understanding this utility model and simplifying the description, and does not indicate or imply that the part, element, or whole referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0085] Furthermore, if sequential descriptive terms such as "first," "second," etc., appear, their purpose in this specification is for ease of understanding or simplification. For example, to distinguish multiple technical features of the same type or function, which must be mentioned separately, this specification may use prefixes or suffixes to differentiate them. Therefore, they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0086] In this utility model, if descriptive terms describing structural relationships are used, such as "installation," "connection," "joining," and "fixing," they should be interpreted broadly unless otherwise explicitly specified and limited. For example, "installation," "connection," and "joining" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two components or the interaction between two components. "Fixing" can refer to an integral fixation or a detachable fixation using fasteners; it can be a direct fixation or a fixation through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood based on the specific circumstances, the context, and the coherence of the preceding and following text.

[0087] In this utility model, if descriptive terms containing subordinate or connecting meanings appear, such as "above" or "below" the second feature, they should not be interpreted restrictively unless otherwise explicitly specified and limited. For example, "above" or "below" can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. For those skilled in the art, the specific meaning of the above descriptive terms in this utility model can be understood according to the specific circumstances, the context, and the coherence of the preceding and following text.

[0088] Furthermore, "above," "on top of," and "above" the first feature in relation to the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments, examples, and features described in this specification, and such combinations or integrations should all fall within the scope of the present invention.

[0090] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Variations, modifications, substitutions, and modifications made by those skilled in the art to the above embodiments within the scope of information available through public channels and in conjunction with the technical teachings given in this application are still covered within the protection scope of this application.

Claims

1. A drone capable of launching fire extinguishing projectiles, characterized in that: include: Body (1); The powertrain (2) is mounted on the body (1) and can drive the body (1) to fly; The projectile compartment (3) is located on the body (1) and can be used to hold fire extinguishing projectiles. The lower part of the projectile compartment (3) is provided with a projectile outlet, and the projectile outlet is connected to a conveying channel pipe (4). The launching mechanism (5) has its inlet connected to the lower end of the conveying channel pipe (4). The fire extinguishing projectiles in the projectile compartment (3) can enter the launching mechanism (5) along the conveying channel pipe (4). When the launching mechanism (5) is working, it can launch the fire extinguishing projectiles from the conveying channel pipe (4) from the outlet of the launching mechanism (5).

2. The UAV capable of launching fire extinguishing projectiles according to claim 1, characterized in that: Also includes: A suspension bracket (11) is provided on the lower side of the body (1) and extends downward; The movable plate (12) is coaxially hinged to the lower part of the suspension frame (11) on its two opposite edges, and the launching mechanism (5) is located on the movable plate (12); The launch angle adjustment drive mechanism is located on the body (1). The output end of the launch angle adjustment drive mechanism is connected to the movable plate (12) and can drive the movable plate (12) to rotate around the hinge axis between the movable plate (12) and the suspension frame (11).

3. The UAV capable of launching fire extinguishing projectiles according to claim 2, characterized in that: Mounting blocks (15) are provided on the upper sides of the opposite two edges of the movable plate (12), and the hinge shaft between the movable plate (12) and the suspension frame (11) is provided on the mounting blocks (15).

4. The UAV capable of launching fire extinguishing projectiles according to claim 2, characterized in that: The emission angle adjustment drive mechanism includes: The launching angle motor (6) is hinged to the body (1), and the output end of the launching angle motor (6) is provided with a downwardly extending screw (61); The adjusting block (62) is threadedly connected to the screw (61), and the outer side of the adjusting block (62) is hinged to the movable plate (12). The hinge axis between the adjusting block (62) and the movable plate (12), the hinge axis between the launch angle motor (6) and the body (1), and the hinge axis between the movable plate (12) and the suspension frame (11) are parallel to each other and not coplanar.

5. The UAV capable of launching fire extinguishing projectiles according to claim 4, characterized in that: One end of the movable plate (12) is also provided with an extension, and the upper side of the extension is provided with a hinge seat (13). The outer side of the adjusting block (62) is hinged to the hinge seat (13); the screw (61) gradually moves away from the machine body (1) from top to bottom.

6. The UAV capable of launching fire extinguishing projectiles according to claim 2, characterized in that: The inlet of the launching mechanism (5) is arranged coaxially with the hinge axis between the movable plate (12) and the suspension frame (11). The movable plate (12) is also provided with a bearing seat (14). The lower end of the conveying channel pipe (4) is provided with an arc-shaped elbow (41). The horizontal part of the arc-shaped elbow (41) is connected to the bearing seat (14) through a thin-walled bearing. The inner ring of the thin-walled bearing is directly opposite the inlet of the launching mechanism (5).

7. The UAV capable of launching fire extinguishing projectiles according to claim 1, characterized in that: The side wall of the conveying channel pipe (4) is provided with a hollowed-out through groove (42).

8. The UAV capable of launching fire extinguishing projectiles according to claim 1, characterized in that: The launching mechanism (5) includes: a launching bracket (51); The launching tube (52) is located in the middle of the launching bracket (51), and friction grooves are provided on both sides of the launching tube (52); The transmitting motor (53) is mounted on the transmitting bracket (51) and located on both sides of the transmitting tube (52). The output shaft of the transmitting motor (53) is provided with a friction wheel (54), and the wheel surface of the friction wheel (54) is located in the friction groove.

9. The UAV capable of launching fire extinguishing projectiles according to claim 8, characterized in that: The friction wheels (54) are located on opposite sides of the launching tube (52), and the two friction wheels (54) are directly opposite each other.

10. The UAV capable of launching fire extinguishing projectiles according to claim 1, characterized in that: The powertrain (2) includes multiple support rods (21) and multiple blade shields (23). The blade shields (23) are evenly arranged around the body (1). One end of each support rod (21) is connected to the body (1), and the other end is connected to the blade shield (23). A drive motor (22) is provided in the middle of the blade shield (23), and blades are provided on the output shaft of the drive motor (22).

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