Direct injection type structure of fire-fighting unmanned aerial vehicle and fire extinguishing method of fire-fighting unmanned aerial vehicle

Abstract

The direct injection type structure comprises an unmanned aerial vehicle body, a storage battery is installed at the top of the unmanned aerial vehicle body in a clamped mode, a storage box is fixedly installed at the bottom of the unmanned aerial vehicle body, and a fire extinguishing agent storage tank is installed in the storage box; and the top of the fire extinguishing agent storage tank penetrates to the outside of the storage box through a positioning pipeline and communicates with a spray pipe. Through cooperation of a driving motor, a driving gear, a driven gear, a transmission disc and an adjusting rotary disc, the spraying angle of a spraying pipe can be flexibly adjusted, the fire extinguishing precision and effect are improved, a damping structure composed of a supporting spring and a damping shock absorber at the bottom can effectively relieve impact force generated when an unmanned aerial vehicle lands, equipment safety is protected, and the practicability is high. The pressure sensor can monitor the pressure in the fire extinguishing agent storage tank in real time, opening and closing of the electromagnetic valve are controlled through the injection control module, and the injection stability and safety are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of fire-fighting drones, and in particular to a direct-spray structure of a fire-fighting drone and a fire extinguishing method thereof. Background Art

[0002] In today's firefighting field, firefighting drones, as an emerging and efficient firefighting equipment, are gradually playing an important role. They can quickly reach the fire scene, break through terrain restrictions, monitor and extinguish fires in a timely manner, and provide great convenience for firefighters' firefighting work.

[0003] However, in actual applications, existing firefighting drones have many problems that need to be solved in terms of the spray angle adjustment of their spray structures. The spray angle adjustment methods of many firefighting drones are relatively simple. Some drones can only achieve simple up and down angle adjustments and cannot flexibly rotate in the horizontal direction. This makes it difficult to accurately spray fire extinguishing agents to the fire source in complex fire scenes. When the fire source is in the corner of a building or blocked by obstacles, due to the limitations of the spray angle, the drone cannot effectively cover the fire source, resulting in low fire extinguishing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a direct-spray structure of a fire-fighting drone and a fire extinguishing method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a direct-spray structure for a fire-fighting drone, comprising a drone body, a battery being mounted on the top of the drone body, a storage box being fixedly mounted on the bottom of the drone body, a fire extinguishing agent storage tank being mounted inside the storage box, a nozzle being connected to the outside of the storage box through a positioning pipe at the top of the fire extinguishing agent storage tank, a nozzle being connected to the surface of the nozzle, a solenoid valve being mounted at one end of the positioning pipe, a pressure sensor being mounted on the front side of the top of the fire extinguishing agent storage tank, and a positioning frame being mounted below the left side of the storage box. A support shaft is installed inside the positioning frame, and a rotating seat is sleeved on the surface of the support shaft. The left end of the rotating seat is connected to one side of the nozzle, and the front end of the support shaft passes through the outside of the positioning frame and is installed with an adjusting dial. A protective box body is fixedly installed on the front of the storage box, and a driving motor is fixedly installed on the outside of the protective box body. The output shaft of the driving motor passes through the inside of the protective box body and is fixedly installed with a driving gear. A driven gear is engaged with the left side of the driving gear, and a transmission disk is installed on the back of the driven gear through a shaft rod. The transmission disk is connected to the external adjusting dial through a belt drive.

[0006] As a preferred solution, support box bodies are installed on both sides of the bottom of the storage box, support springs are installed on both sides of the top of the inner cavity of the support box, and a damping shock absorber is installed between the two support springs. A landing support seat is fixedly installed on the bottom of the support spring and the damping shock absorber, and a landing gear is fixedly installed on the bottom of the landing support seat.

[0007] As a preferred solution, both sides of the inner cavity of the support box are vertically slidably installed with limit sliders, and the inner side of the limit sliders is connected to the inner side of the landing support seat.

[0008] As a preferred solution, a reinforcement bearing plate is fixedly installed on the bottom of the inner cavity of the storage box, and the top of the reinforcement bearing plate is connected to the bottom of the fire extinguishing agent storage tank.

[0009] As a preferred solution, a sealing ring is installed on the left side of the storage box and corresponds to the position where the positioning pipe passes through, and the sealing ring is sealed and connected to the through hole on the left side of the storage box.

[0010] As a preferred solution, a bottom reinforcement plate is fixedly installed on the bottom of the storage box, and adjustment grooves are provided on both sides of the bottom of the bottom reinforcement plate. An adjustment plate is slidably installed on the bottom of the adjustment groove through a protrusion, and the outer end of the adjustment plate is welded to the inner side of the support box body, and the bottom of the adjustment plate is connected to the bottom reinforcement plate through an adjustment knob.

[0011] As a preferred solution, a positioning bracket is fixedly installed on the front side of the left end of the top of the fire extinguishing agent storage tank, and the bottom of the pressure sensor is clamped inside the positioning bracket.

[0012] As a preferred solution, the drone body is controlled by an external control device, and an injection control module is installed inside the external control device, and the injection control module is wirelessly connected to the pressure sensor and the solenoid valve.

[0013] As a preferred solution, a symmetrically arranged movable hole is opened on the left side of the protective box body, and the two ends of the belt are located inside the movable hole.

[0014] As a preferred solution, a direct spray fire extinguishing method for a fire-fighting drone is provided, and the specific fire extinguishing method includes the following steps:

[0015] A. The drone is controlled by the operator through an external control device. The battery installed on the top provides power to the drone and other electrical components, such as the drive motor and pressure sensor, to ensure the normal operation of the entire system.

[0016] B. The pressure sensor installed on the front of the top of the fire extinguishing agent storage tank monitors the pressure inside the tank in real time. The pressure sensor transmits the monitored pressure information wirelessly to the injection control module inside the external control device. The injection control module determines whether the pressure inside the tank is normal based on the received pressure data, thereby providing a basis for the subsequent control of the opening and closing of the solenoid valve to ensure the stability and safety of the injection process;

[0017] C. When fire extinguishing is required, the operator sends a command to the injection control module through the external control device. The injection control module controls the solenoid valve to open. At this time, the fire extinguishing agent in the fire extinguishing agent storage tank flows into the nozzle through the positioning pipe under the action of the tank pressure, and then is sprayed out through the nozzle on the surface of the nozzle to achieve the fire extinguishing operation. When spraying is not required, the injection control module controls the solenoid valve to close and stop spraying the fire extinguishing agent;

[0018] D. When the nozzle's spray angle needs to be adjusted to suit different firefighting scenarios, the external control device sends a command to start the drive motor. The output shaft of the drive motor drives the driving gear to rotate. The driving gear meshes with the driven gear, thereby driving the driven gear to rotate. The driven gear drives the transmission disc on the back through the shaft to rotate. The transmission disc is connected to the external adjustment dial through a belt drive, which in turn rotates the adjustment dial. The adjustment dial drives the support shaft to rotate, and the rotating seat sleeved on the support shaft surface rotates accordingly, ultimately achieving the adjustment of the nozzle angle, so that the nozzle can accurately spray at the fire source;

[0019] E. When the UAV completes its firefighting mission and needs to land, the landing gear first contacts the ground. The impact force is transmitted to the support spring and damping shock absorber through the landing support seat. The support spring absorbs part of the impact force through its own elastic deformation, and the damping shock absorber consumes energy through the damping effect, further reducing the impact force, thereby protecting the UAV body and the equipment in the storage box from damage and ensuring the stability of the landing process.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention can flexibly adjust the spray angle of the nozzle through the coordination of the drive motor, active gear, driven gear, transmission disk and adjustment dial, thereby improving the accuracy and effectiveness of fire extinguishing. The shock absorption structure composed of the support spring and damping shock absorber at the bottom can effectively reduce the impact force when the drone lands, protecting the safety of the equipment. The pressure sensor can monitor the pressure in the fire extinguishing agent storage tank in real time, and control the opening and closing of the solenoid valve through the injection control module to ensure the stability and safety of the injection.

[0022] 2. The present invention controls the drone through an external control device, thereby enabling the operator to remotely control the drone's flight and fire-fighting operations. The injection control module inside the external control device is wirelessly connected to the pressure sensor and the solenoid valve. This wireless connection method makes data transmission and command control more flexible and convenient. The operator can obtain the pressure information in the fire-extinguishing agent storage tank monitored by the pressure sensor in real time through the external control device from a safe distance, and send instructions to the injection control module according to the actual situation. The injection control module then controls the opening and closing of the solenoid valve, thereby achieving precise control of the fire-extinguishing agent injection. Moreover, the pressure data monitored in real time by the pressure sensor can be fed back to the injection control module in a timely manner. The injection control module can dynamically adjust the working state of the solenoid valve based on this data. When the pressure is too high, corresponding measures can be taken in time to ensure the safe operation of the system. This real-time feedback and adjustment mechanism improves the efficiency and safety of fire-fighting operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a first-view structural stereogram of the present invention;

[0024] Figure 2 This is a structural stereogram from a second viewing angle of the present invention;

[0025] Figure 3 It is a cross-sectional view of the local structure of the present invention;

[0026] Figure 4 This is a partial structural diagram of the interior of the support box of the present invention;

[0027] Figure 5 This is a cross-sectional view of the local structure from another perspective of the present invention.

[0028] In the figure: 1. UAV body; 2. Fire extinguishing agent storage tank; 3. Positioning pipe; 4. Nozzle; 5. Nozzle; 6. Solenoid valve; 7. Pressure sensor; 8. Positioning frame; 9. Support shaft; 10. Rotating seat; 11. Adjustment turntable; 12. Protective box; 13. Drive motor; 14. Driving gear; 15. Driven gear; 16. Transmission plate; 17. Belt; 18. Support box; 19. Support spring; 20. Damping shock absorber; 21. Landing support seat; 22. Landing gear; 23. Limiting slider; 24. Reinforcement bearing plate; 25. Sealing ring; 26. Bottom reinforcement plate; 27. Adjustment slot; 28. Adjustment plate; 29. Adjustment knob; 30. Battery; 31. Positioning card holder; 32. Storage box. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0031] Example 1:

[0032] See also Figure 1 As shown, the present invention provides a direct-spray structure of a fire-fighting drone, comprising a drone body 1, a battery 30 being mounted on the top of the drone body 1, a storage box 32 being fixedly mounted on the bottom of the drone body 1, a fire extinguishing agent storage tank 2 being mounted inside the storage box 32, a nozzle 4 being connected to the outside of the storage box 32 through a positioning pipe 3 at the top of the fire extinguishing agent storage tank 2, a nozzle 5 being connected to the surface of the nozzle 4, a solenoid valve 6 being mounted at one end of the positioning pipe 3, a pressure sensor 7 being mounted on the front side of the top of the fire extinguishing agent storage tank 2, a positioning frame 8 being mounted below the left side of the storage box 32, a support 2 being mounted inside the positioning frame 8 Shaft 9, the surface of the support shaft 9 is sleeved with a rotating seat 10, the left end of the rotating seat 10 is connected to one side of the nozzle 4, the front end of the support shaft 9 passes through the outside of the positioning frame 8 and is installed with an adjusting dial 11, the front of the storage box 32 is fixedly installed with a protective box body 12, the outside of the protective box body 12 is fixedly installed with a drive motor 13, the output shaft of the drive motor 13 passes through the inside of the protective box body 12 and is fixedly installed with a driving gear 14, the left side of the driving gear 14 is engaged with a driven gear 15, and the back of the driven gear 15 is installed with a transmission disk 16 through a shaft, and the transmission disk 16 is connected to the external adjustment dial 11 through a belt 17.

[0033] Example 2:

[0034] Based on the first embodiment, the present invention is as follows Figure 4As shown, it is disclosed that support box bodies 18 are installed on both sides of the bottom of the storage box 32, support springs 19 are installed on both sides of the top of the inner cavity of the support box body 18, and a damping shock absorber 20 is installed between the two support springs 19, and a landing support seat 21 is fixedly installed on the bottom of the support springs 19 and the damping shock absorber 20, and a landing gear 22 is fixedly installed on the bottom of the landing support seat 21; limiting sliders 23 are vertically slidably installed on both sides of the inner cavity of the support box body 18, and the inner side of the limiting slider 23 is connected to the inner side of the landing support seat 21.

[0035] Use Figure 1 The technical solution shown in the figure, the combination of the support spring 19 and the damping shock absorber 20 can effectively buffer the impact force generated when the drone lands. The support spring 19 uses its own elastic deformation to absorb part of the energy when it is subjected to the impact force, and converts the kinetic energy into elastic potential energy, thereby slowing down the direct effect of the impact force on the drone. The damping shock absorber 20 consumes the energy brought by the impact force through the damping effect, further reducing the vibration amplitude. The two work together to greatly reduce the vibration and impact during landing, protect the drone body 1 and the equipment in the storage box 32, such as the fire extinguishing agent storage tank 2, the pressure sensor 7, etc., avoid damage to the equipment due to severe vibration, and prolong the equipment. The service life of the drone is extended, ensuring the safety and reliability of the drone during multiple landings. The limit sliders 23 installed vertically for sliding on both sides of the support box 18 are connected to the inner side of the landing support seat 21, which plays a good limiting role. During the landing of the drone, the limit slider 23 can limit the sliding direction of the landing support seat 21 so that it can only move in the vertical direction, preventing the landing support seat 21 from deviating in the lateral or other directions, thereby ensuring the stability of the drone during landing. This helps the drone to land accurately at the predetermined position, avoids accidents caused by unstable landing, such as tilting or overturning of the drone, and improves the safety and operability of landing.

[0036] Secondly, in the technical solution, a reinforcement bearing plate 24 is fixedly installed at the bottom of the inner cavity of the storage box 32, and the top of the reinforcement bearing plate 24 is connected to the bottom of the fire extinguishing agent storage tank 2; a sealing ring 25 is installed on the left side of the storage box 32 and corresponds to the position where the positioning pipe 3 passes through, and the sealing ring 25 is sealed and connected to the through hole on the left side of the storage box 32; a bottom reinforcement plate 26 is fixedly installed at the bottom of the storage box 32, and adjustment grooves 27 are provided on both sides of the bottom of the bottom reinforcement plate 26. An adjustment plate 28 is slidably installed on the bottom of the adjustment groove 27 through a protrusion. The outer end of the adjustment plate 28 is welded to the inner side of the support box body 18, and the bottom of the adjustment plate 28 is connected to the bottom reinforcement plate 26 through an adjusting knob 29.

[0037] It uses Figure 1In the technical solution shown, the reinforcement bearing plate 24 is fixedly installed at the bottom of the inner cavity of the storage box 32, which provides a solid support foundation for the fire extinguishing agent storage tank 2 and reduces the displacement and shaking of the fire extinguishing agent storage tank 2 caused by factors such as bumps and shaking during the flight of the drone. For example, when the drone encounters air turbulence, the reinforcement bearing plate 24 can effectively disperse and bear the weight of the fire extinguishing agent storage tank 2, preventing it from colliding with other components inside the storage box 32 due to shaking, thereby ensuring the stability and safety of the fire extinguishing agent storage tank 2. The bottom reinforcement plate 26 is fixed at the bottom The adjustment slots 27 on both sides cooperate with the adjustment plates 28 that are slidably installed through the protrusions, and the bottom of the adjustment plate 28 is connected to the bottom reinforcement plate 26 through the adjustment knob 29, thereby realizing the adjustability of the position of the support box 18. In different usage scenarios, for example, according to the load condition of the drone, the flight attitude adjustment requirements, etc., the position of the adjustment plate 28 outside the adjustment slot 27 can be changed by rotating the adjustment knob 29, thereby adjusting the position and angle of the support box 18, thereby optimizing the center of gravity distribution of the drone and improving the flight stability and controllability.

[0038] Example 3:

[0039] The present invention Figure 1-Figure 5 As shown, a positioning bracket 31 is fixedly installed on the front side of the top left end of the fire extinguishing agent storage tank 2, and the bottom of the pressure sensor 7 is clamped inside the positioning bracket 31; the drone body 1 is controlled by an external control device, and an injection control module is installed inside the external control device, and the injection control module is wirelessly connected to the pressure sensor 7 and the solenoid valve 6; symmetrically arranged movable holes are opened on the left side of the protective box 12, and the two ends of the belt 17 are located inside the movable holes.

[0040] With the above technical solution, the UAV is controlled by an external control device, enabling the operator to remotely control the UAV flight and fire-fighting operations. The injection control module inside the external control device is wirelessly connected to the pressure sensor 7 and the solenoid valve 6. This wireless connection method makes data transmission and command control more flexible and convenient. The operator can obtain the pressure information in the fire-extinguishing agent storage tank 2 monitored by the pressure sensor 7 in real time through the external control device from a safe distance, and send instructions to the injection control module according to the actual situation. The injection control module then controls the opening and closing of the solenoid valve 6, thereby achieving precise control of the fire-extinguishing agent injection. Moreover, the pressure data monitored in real time by the pressure sensor 7 can be fed back to the injection control module in a timely manner. The injection control module can dynamically adjust the working state of the solenoid valve 6 based on this data. When the pressure is too high, corresponding measures can be taken in time to ensure the safe operation of the system. This real-time feedback and adjustment mechanism improves the efficiency and safety of fire-fighting operations.

[0041] A direct spray fire extinguishing method for a fire-fighting drone, the specific fire extinguishing method includes the following steps:

[0042] A. The drone 1 is controlled by an operator using an external control device. The battery 30 mounted on the top provides power to the drone 1 and other electrical components, such as the drive motor 13 and the pressure sensor 7, to ensure the normal operation of the entire system.

[0043] B. The pressure sensor 7 installed on the top front side of the fire extinguishing agent storage tank 2 monitors the pressure inside the tank in real time. The pressure sensor 7 wirelessly transmits the monitored pressure information to the injection control module inside the external control device. The injection control module determines whether the pressure inside the tank is normal based on the received pressure data, thereby providing a basis for subsequent control of the opening and closing of the solenoid valve 6, ensuring the stability and safety of the injection process;

[0044] C. When fire extinguishing is required, the operator sends a command to the injection control module through the external control device. The injection control module controls the solenoid valve 6 to open. At this time, the fire extinguishing agent in the fire extinguishing agent storage tank 2 flows into the nozzle 4 through the positioning pipe 3 under the action of the internal pressure of the tank, and is then sprayed out through the nozzle 5 on the surface of the nozzle 4 to achieve the fire extinguishing operation. When spraying is no longer required, the injection control module controls the solenoid valve 6 to close and stop spraying the fire extinguishing agent.

[0045] D. When the spray angle of the nozzle 4 needs to be adjusted to suit different fire extinguishing scenarios, the external control device sends a command to start the drive motor 13. The output shaft of the drive motor 13 drives the driving gear 14 to rotate. The driving gear 14 engages with the driven gear 15, thereby driving the driven gear 15 to rotate. The driven gear 15 drives the transmission disk 16 on the back to rotate through the shaft. The transmission disk 16 is connected to the external adjustment dial 11 through a belt 17, which in turn rotates the adjustment dial 11. The adjustment dial 11 drives the support shaft 9 to rotate, and the rotating seat 10 sleeved on the surface of the support shaft 9 rotates accordingly, ultimately achieving the adjustment of the angle of the nozzle 4, so that the nozzle 5 can accurately spray at the fire source;

[0046] E. When the UAV completes its firefighting mission and needs to land, the landing gear 22 first contacts the ground. The impact force is transmitted to the support spring 19 and the damping shock absorber 20 through the landing support seat 21. The support spring 19 absorbs part of the impact force through its own elastic deformation, and the damping shock absorber 20 consumes energy through the damping effect, further reducing the impact force, thereby protecting the UAV body 1 and the equipment in the storage box 32 from damage and ensuring the stability of the landing process.

[0047] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (i.e., those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A direct-spray structure of a firefighting drone, comprising a drone body (1), characterized in that: The top of the drone body (1) is fastened with a battery (30), the bottom of the drone body (1) is fixedly mounted with a storage box (32), the interior of the storage box (32) is mounted with a fire extinguishing agent storage tank (2), the top of the fire extinguishing agent storage tank (2) is connected to the outside of the storage box (32) through a positioning pipe (3), the surface of the nozzle (4) is connected with a nozzle (5), one end of the positioning pipe (3) is mounted with a solenoid valve (6), the front side of the top of the fire extinguishing agent storage tank (2) is mounted with a pressure sensor (7), a positioning frame (8) is mounted below the left side of the storage box (32), the interior of the positioning frame (8) is mounted with a support shaft (9), the surface of the support shaft (9) is sleeved with a A rotating seat (10) is provided, wherein the left end of the rotating seat (10) is connected to one side of the nozzle (4), the front end of the supporting shaft (9) passes through the outside of the positioning frame (8) and is installed with an adjusting dial (11), the front of the storage box (32) is fixedly installed with a protective box body (12), the outside of the protective box body (12) is fixedly installed with a driving motor (13), the output shaft of the driving motor (13) passes through the inside of the protective box body (12) and is fixedly installed with a driving gear (14), the left side of the driving gear (14) is meshed with a driven gear (15), the back of the driven gear (15) is installed with a transmission disc (16) through a shaft, and the transmission disc (16) is connected to the external adjusting dial (11) through a belt (17).

2. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: Support boxes (18) are installed on both sides of the bottom of the storage box (32), support springs (19) are installed on both sides of the top of the inner cavity of the support box (18), and a damping shock absorber (20) is installed between the two support springs (19). A landing support seat (21) is fixedly installed on the bottom of the support spring (19) and the damping shock absorber (20), and a landing gear (22) is fixedly installed on the bottom of the landing support seat (21).

3. The direct-injection structure of a firefighting drone according to claim 2, characterized in that: Limiting sliders (23) are vertically slidably installed on both sides of the inner cavity of the support box (18), and the inner side of the limiting slider (23) is connected to the inner side of the landing support seat (21).

4. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: A reinforcement bearing plate (24) is fixedly mounted on the bottom of the inner cavity of the storage box (32), and the top of the reinforcement bearing plate (24) is connected to the bottom of the fire extinguishing agent storage tank (2).

5. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: A sealing ring (25) is installed on the left side of the storage box (32) and at a position corresponding to the position through which the positioning pipe (3) passes. The sealing ring (25) is sealed and connected to the through hole on the left side of the storage box (32).

6. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: A bottom reinforcement plate (26) is fixedly installed at the bottom of the storage box (32), and adjustment grooves (27) are provided on both sides of the bottom of the bottom reinforcement plate (26). An adjustment plate (28) is slidably installed at the bottom of the adjustment groove (27) through a protrusion, and the outer end of the adjustment plate (28) is welded to the inner side of the support box body (18), and the bottom of the adjustment plate (28) is connected to the bottom reinforcement plate (26) through an adjustment knob (29).

7. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: A positioning bracket (31) is fixedly mounted on the front side of the left end of the top of the fire extinguishing agent storage tank (2), and the bottom of the pressure sensor (7) is clamped inside the positioning bracket (31).

8. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: The drone body (1) is controlled by an external control device, and an injection control module is installed inside the external control device. The injection control module is wirelessly connected to the pressure sensor (7) and the solenoid valve (6).

9. The direct-injection structure of a firefighting drone according to claim 1, characterized in that: A symmetrically arranged movable hole is opened on the left side of the protection box (12), and both ends of the belt (17) are located inside the movable hole.

10. A direct-spray fire extinguishing method for a firefighting drone, characterized by: The specific fire extinguishing method is as follows: A. The drone body (1) is controlled by an operator through an external control device. The battery (30) mounted on the top provides power support for the drone body (1) and other electrical components, such as the drive motor (13) and the pressure sensor (7), to ensure the normal operation of the entire system. B. A pressure sensor (7) installed on the front side of the top of the fire extinguishing agent storage tank (2) monitors the pressure inside the tank in real time. The pressure sensor (7) transmits the monitored pressure information to the injection control module inside the external control device in a wireless manner. The injection control module determines whether the pressure inside the tank is normal based on the received pressure data, thereby providing a basis for the subsequent control of the opening and closing of the solenoid valve (6), ensuring the stability and safety of the injection process; C. When a fire extinguishing operation is required, the operator sends a command to the injection control module through the external control device, and the injection control module controls the electromagnetic valve (6) to open. At this time, the fire extinguishing agent in the fire extinguishing agent storage tank (2) flows into the nozzle (4) through the positioning pipe (3) under the action of the pressure in the tank, and then is sprayed out through the nozzle (5) on the surface of the nozzle (4), thereby realizing the fire extinguishing operation. When spraying is not required, the injection control module controls the electromagnetic valve (6) to close, and stops spraying the fire extinguishing agent; D. When the spray angle of the nozzle (4) needs to be adjusted to adapt to different fire extinguishing scenarios, the external control device sends a command to start the drive motor (13), and the output shaft of the drive motor (13) drives the driving gear (14) to rotate, and the driving gear (14) is engaged with the driven gear (15), thereby driving the driven gear (15) to rotate, and the driven gear (15) drives the transmission disc (16) on the back to rotate through the shaft, and the transmission disc (16) is connected to the external adjustment dial (11) through the belt (17), thereby causing the adjustment dial (11) to rotate, and the adjustment dial (11) drives the support shaft (9) to rotate, and the rotating seat (10) sleeved on the surface of the support shaft (9) rotates accordingly, finally achieving the adjustment of the nozzle (4) angle, so that the nozzle (5) can be aimed at the fire source for precise spraying; E. When the UAV completes the fire-fighting mission and needs to land, the landing gear (22) first contacts the ground, and the impact force is transmitted to the support spring (19) and the damping shock absorber (20) through the landing support seat (21). The support spring (19) absorbs part of the impact force through its own elastic deformation, and the damping shock absorber (20) consumes energy through the damping effect, further reducing the impact force, thereby protecting the UAV body (1) and the equipment in the storage box (32) from damage, and ensuring the stability of the landing process.

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