A fire-fighting drone for dropping fire extinguishing bombs

Abstract

The present invention relates to a fire-fighting drone for launching fire-extinguishing bombs in the field of fire-fighting technology, comprising: a drone body; a bomb storage box installed on the drone body, a loading hole is opened at the top of the bomb storage box, and a projection opening is opened at the bottom of the bomb storage box; a workbench rotatably arranged in the bomb storage box; a sealing cover assembly arranged at the bottom of the projection opening; a rotating mechanism installed in the bomb storage box for driving the workbench to rotate and driving the sealing cover assembly to open and close. The present invention achieves the effect of storing multiple bombs and orderly launching, and under the reaction force of the elastic member, quickly ejects the fire-extinguishing bombs from the material guiding port and the projection opening, greatly increasing the initial velocity of the fire-extinguishing bombs, ensuring that the fire-extinguishing bombs reach quickly, and also keeping the entire bomb storage box in a sealed state when not in use for fire-fighting, avoiding problems such as pollution, corrosion, damage and moisture, and ensuring that the performance and reliability of the fire-extinguishing bombs are not affected.

Description

Technical Field

[0001] The present invention relates to the field of fire fighting technology, and particularly relates to a fire fighting drone for dropping fire extinguishing bombs. Background Art

[0002] With the rapid development of urban construction and the extensive distribution of forest resources, fire hazards are increasing day by day, and the complexity and danger of fire accidents are also continuously improving. Traditional fire fighting means are often restricted in the face of fires in the deep forest and fires in complex terrains. For example, in forest fires, the terrain is complex and fire trucks are difficult to penetrate deep into the forest, resulting in difficulties in carrying out fire fighting work. Due to the advantages of rapid response and strong mobility of drones, they are widely used in the fire fighting industry. At present, although the existing fire fighting drones on the market have alleviated the above problems to a certain extent, there are still some deficiencies: most drones use the method of hanging fire extinguishing bombs to load fire extinguishing bombs, and then rely on the self-gravity of the fire extinguishing bombs to drop the fire extinguishing bombs from top to bottom. However, the number of fire extinguishing bombs they carry is limited, and sometimes they can only carry one or two fire extinguishing bombs. After the projection is completed, they need to return to base to reload the fire extinguishing bombs, resulting in low efficiency.

[0003] To solve the problem of limited ammunition carrying capacity, a certain fire fighting drone for dropping fire extinguishing bombs in the market adopts the design of a storage box for loading a large number of fire extinguishing bombs and has a certain market share.

[0004] After retrieval, the invention patent with the authorization announcement number of CN114344762B discloses a fire fighting drone for dropping fire extinguishing bombs, which is provided with: a drone fuselage; a fixed top plate is fixedly connected to the lower end surface of the drone fuselage, and a fixed connecting column is connected to the end surface of the fixed top plate; a buffer device is fixed to the lower end of the fixed plate, an installation plate is fixedly connected to the lower end of the buffer device, a storage box for fire extinguishing bombs is arranged at the lower end of the installation plate, and a loading hole is arranged on one side of the storage box for fire extinguishing bombs; a fire extinguishing bomb transmission box is fixed to the lower end of the storage box for fire extinguishing bombs, a transmission device is fixed in the fire extinguishing bomb transmission box, a fire extinguishing bomb transmission channel is fixed to the lower end of the fire extinguishing bomb transmission box, and a fire extinguishing bomb launching box is fixed to the lower end of the fire extinguishing bomb transmission channel. The fire extinguishing bomb is launched through the launching port on the fire extinguishing bomb launching box. In the present invention, a spiral pipeline is arranged inside the fire extinguishing bomb transmission box, and the pipeline connecting the outlet of the spiral pipeline can project the fire extinguishing bomb in the horizontal direction, avoiding the danger of explosion due to too high temperature when the aircraft is above the fire source.

[0005] Based on the above search, it is found that there are certain deficiencies in the prior art: Although the prior art has solved the problem of insufficient ammunition load, when the fire extinguishing bomb is horizontally projected to the fire location after obtaining a certain horizontal speed through the spiral groove by using gravity, since the spiral feeding device relies on the rotation of the spiral structure to push the fire extinguishing bomb, it is relatively difficult to adjust the rotation speed change, and it is difficult to accurately and quickly change the initial velocity of the fire extinguishing bomb according to complex situations such as the urgency of the fire and the distance. That is, in an emergency fire extinguishing situation, when the unmanned aerial vehicle takes off above the fire, it is unable to significantly increase the initial velocity in time to ensure that the fire extinguishing bomb arrives, which increases the fire extinguishing time and further increases the losses caused by the fire. Therefore, it is urgent to propose a fire-fighting unmanned aerial vehicle for dropping fire extinguishing bombs to improve the above problems. Summary of the Invention

[0006] In view of the above prior art, the technical problem to be solved by the present invention is that in an emergency fire extinguishing situation, when the unmanned aerial vehicle takes off above the fire, it is unable to significantly increase the initial velocity in time to ensure that the fire extinguishing bomb arrives, which increases the fire extinguishing time and further increases the losses caused by the fire.

[0007] To solve the above problems, the present invention provides a fire-fighting unmanned aerial vehicle for dropping fire extinguishing bombs, comprising:

[0008] An unmanned aerial vehicle body;

[0009] A bomb storage box installed on the unmanned aerial vehicle body, a loading hole is opened at the top of the bomb storage box, and a projection opening is opened at the bottom of the bomb storage box;

[0010] A workbench, which is rotatably arranged in the bomb storage box;

[0011] A sealing cover assembly, which is arranged at the bottom of the projection opening;

[0012] A rotating mechanism, which is installed in the bomb storage box and is used to drive the workbench to rotate and drive the sealing cover assembly to open and close;

[0013] A projection assembly, which is arranged above the workbench;

[0014] The top surface of the workbench is designed to be inclined, and equidistantly arranged inclined bomb storage grooves are opened on the top surface of the workbench. Two or more fire extinguishing bomb bodies are filled in the bomb storage grooves. A material guiding port corresponding to the position of the projection opening is opened at the bottom end of the bomb storage groove, and the top end of the bomb storage groove corresponds to the position of the loading hole. The projection assembly includes elastic members equidistantly installed on the inner wall of the top of the bomb storage box, and a lifting ring is installed at the bottom of the elastic member. An arc-shaped seat is installed on one side of the bottom of the lifting ring, and the arc-shaped seat is located directly above the material guiding port.

[0015] Through the above technical solutions, the fire extinguishing bomb is quickly ejected from the material guiding port and the projection port under the reaction force of the elastic member, so that in case of an emergency fire, the initial velocity of the fire extinguishing bomb can be significantly increased in a timely manner, the losses caused by the fire can be reduced, and the delivery accuracy of the fire extinguishing bomb can be improved at a certain initial velocity.

[0016] The present invention is further configured such that the elastic member includes a fixed cylinder installed on the inner wall of the top of the ammunition storage box, and a telescopic rod inserted into the fixed cylinder is installed on the top of the lifting ring, and a second spring is installed between the top of the telescopic rod and the inner wall of the top of the fixed cylinder.

[0017] Through the above technical solutions, it is ensured that the fire extinguishing bomb arrives quickly, reducing the fire extinguishing time.

[0018] The present invention is further configured such that the bottom surface of the arc-shaped seat is designed to be arc-shaped, and multiple columns of equally spaced annularly distributed balls are rotatably arranged on the bottom surface of the arc-shaped seat.

[0019] Through the above technical solutions, the arc-shaped seat can contact the fire extinguishing bomb with a small frictional force, effectively avoiding situations such as jamming and deviation of the fire extinguishing bomb during the pushing process.

[0020] The present invention is further configured such that the rotating mechanism includes a mounting hole opened at the middle of the bottom of the ammunition storage box, and a central shaft is rotatably connected to the inner wall of the mounting hole through a bearing. A stepper drive for driving the central shaft to rotate is installed on the inner wall of the top of the ammunition storage box, and the workbench is installed on the central shaft.

[0021] Through the above technical solutions, the rotation angle of the workbench can be accurately controlled, so that different ammunition storage slots are sequentially aligned with the projection port.

[0022] The present invention is further configured such that the sealing cover assembly includes a fixed seat fixed to the bottom of the ammunition storage box, and a cavity is provided at the center of the fixed seat. Moving holes are opened at both ends of the cavity, and a moving rod is inserted into the inner wall of the moving hole. A moving ring located in the cavity is fixed to the outer wall of the moving rod, and a first spring is installed between one end of the moving ring and one end of the cavity. One end of the moving rod is fixed with a U-shaped seat, and a moving wheel is rotatably connected to the inner wall of the U-shaped seat. An extrusion disk for driving the moving wheel to move reciprocally is installed at the bottom of the central shaft. Two rotating rods distributed on both sides of the fixed seat are hinged to the bottom of the ammunition storage box, and an opening and closing cover is fixed to one end of each of the two rotating rods. The two opening and closing covers are attached to the bottom of the projection port. The other end of the moving rod is fixed with a mounting ear, and push-pull rods are hinged between the inner walls on both sides of the mounting ear and the bottoms of the two rotating rods. A magnetic attraction cover for sealing the ammunition loading hole is provided on the top of the ammunition storage box.

[0023] Through the above technical solutions, the entire ammunition storage box is in a sealed state, so that the ammunition storage box can be tightly closed in the non-bomb-throwing state, preventing dust, debris, rainwater, etc. from the outside from entering the inside of the ammunition storage box, and avoiding problems such as contamination, corrosion, damage, and moisture absorption of the fire extinguishing bomb body.

[0024] The present invention is further configured such that one side of each of the two opening and closing covers is provided with a card slot, and the two card slots are distributed vertically, and the two opening and closing covers are closed through the two card slots.

[0025] Through the above technical solutions, the two opening and closing covers are closed through the card slots, forming a double insurance mechanism and improving the sealing performance.

[0026] The present invention is further configured such that the extrusion disk includes a disk body installed at the bottom of the central shaft, and the outer wall of the disk body is provided with equally spaced protrusions, and the number of protrusions is one less than the number of ammunition storage slots.

[0027] Through the above technical solutions, each rotation of the extrusion disk can regularly control the opening and closing of the sealing cover, adapting to the requirements of different fire extinguishing rhythms.

[0028] The present invention is further configured such that an installation base frame is installed at the middle of the bottom of the ammunition storage box, and a monitoring device is installed at the middle of the bottom of the installation base frame.

[0029] Through the above technical solutions, the situation at the fire scene and the environment below the drone are monitored in real time.

[0030] The present invention is further configured such that a control box is installed at the middle of the top of the ammunition storage box, and an intelligent control module is provided inside the control box. The intelligent control module is electrically connected to the stepper driver and the monitoring device.

[0031] Through the above technical solutions, the intelligent level of the fire extinguishing operation is improved.

[0032] The present invention is further configured such that suspension brackets are respectively installed on both sides of the top of the ammunition storage box and both sides of the bottom of the drone body.

[0033] Through the above technical solutions, the ammunition storage box is installed on both sides of the bottom of the drone body through the suspension brackets, so that the weight of the ammunition storage box can be evenly distributed on the drone, ensuring the stability of the drone during flight.

[0034] In summary, after adopting the above structure, compared with the prior art, the present invention has the following advantages:

[0035] 1. A plurality of ammunition storage slots are provided on the workbench to achieve the effect of multi - ammunition storage and orderly delivery. The loading hole at the top of the ammunition storage box facilitates the rapid loading of fire extinguishing ammunition. The workbench, which is inclined inside and is provided with equally - spaced inclined ammunition storage slots, enables a single ammunition storage slot to accommodate two or more fire extinguishing ammunition bodies. This design allows the fire extinguishing ammunition to roll orderly towards the bottom feeding port by virtue of its own gravity and the inclined ammunition storage slot structure, providing a basis for efficient delivery. When facing large - area fires, a large number of fire extinguishing ammunition can be quickly in place and ready for delivery at any time, greatly saving the preparation time of the fire extinguishing ammunition. The central axis is rotated by a stepper driver in the rotating mechanism, and then the workbench is rotated, enabling precise control of the rotation angle of the workbench, so that different ammunition storage slots are aligned with the projection port in sequence, achieving accurate ammunition delivery in order and realizing automated operation.

[0036] 2. The design of the elastic member and the arc - shaped seat in the projection assembly enables the fire extinguishing ammunition to squeeze the projection assembly itself when it is driven by the rotating mechanism close to the feeding port, compressing the elastic member and causing the arc - shaped seat and the lifting ring to rise. When the fire extinguishing ammunition is completely above the projection port, the state of the elastic member being squeezed reaches the maximum amplitude. Thus, under the reaction force of the elastic member, the fire extinguishing ammunition is quickly ejected from the feeding port and the projection port, enabling a significant increase in the initial velocity of the fire extinguishing ammunition in case of an emergency fire, ensuring that the fire extinguishing ammunition arrives quickly, reducing the fire - fighting time, and further reducing the losses caused by the fire. Also, at a certain initial velocity, the delivery accuracy of the fire extinguishing ammunition can be improved.

[0037] 3. By designing the bottom surface of the arc - shaped seat into an arc - shaped surface and rolling multiple columns of equally - spaced annularly - distributed balls, the arc - shaped seat can contact the fire extinguishing ammunition with less friction, effectively avoiding situations such as jamming and deviation during the pushing process of the fire extinguishing ammunition, achieving precise single - ammunition delivery, and improving the accuracy of fire extinguishing ammunition delivery.

[0038] 4. A sealing cover assembly linked to the rotating mechanism and a magnetic - adsorption cover for sealing the loading hole are adopted. When not in use for fire - fighting, the projection port and the loading hole are sealed by the sealing cover assembly and the magnetic - adsorption cover respectively, making the entire ammunition storage box in a sealed state. Thus, the ammunition storage box can be tightly closed in the non - ammunition - delivery state, preventing external dust and debris from entering the interior of the ammunition storage box, avoiding contamination, corrosion, or damage to the fire extinguishing ammunition, ensuring that the performance and reliability of the fire extinguishing ammunition are not affected. At the same time, it can also block rainwater and the like from entering, preventing the fire extinguishing ammunition from becoming ineffective due to moisture, and ensuring that it can function properly when needed; during fire - fighting, through the cooperation of the extrusion disk and the sealing cover assembly, when the fire extinguishing ammunition rotates to the feeding port, the opening - closing cover can be automatically opened, making the projection port open for convenient ammunition delivery.

[0039] 5. By using the monitoring device installed at the bottom of the installation chassis, the fire situation below can be observed in real time, providing a basis for bomb dropping. The intelligent control module in the control box is electrically connected to the stepper driver and the monitoring device, facilitating the operator to remotely control the bomb dropping action of the UAV according to the monitoring screen, improving the intelligent level and safety of fire fighting operations. The ammunition storage box is installed on both sides of the bottom of the UAV body through a suspension bracket. This installation method enables the weight of the ammunition storage box to be evenly distributed on the UAV, ensuring the stability of the UAV during flight. The design of the suspension bracket can be adjusted and adapted according to the bottom structure of different models of UAVs, enabling this fire fighting UAV system for dropping fire extinguishing bombs to be applied to various types of UAVs, expanding the application scope and promotion value of this technology, and reducing the cost that the fire department needs to invest in equipping professional fire fighting UAVs. Description of the Drawings

[0040] Figure 1 Schematic three-dimensional structure diagram of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0041] Figure 2 Schematic structure diagram of the ammunition storage box and suspension bracket of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0042] Figure 3 Bottom view of the ammunition storage box of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0043] Figure 4 Schematic three-dimensional sectional view of the ammunition storage box of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0044] Figure 5 Front sectional view of the ammunition storage box of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0045] Figure 6 Schematic structure diagram of the projection assembly of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0046] Figure 7 Schematic structure diagram of the workbench and central shaft of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0047] Figure 8 Schematic structure diagram of the ammunition loading hole and mounting hole of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0048] Figure 9 Schematic structure diagram of the sealing cover assembly of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0049] Figure 10 Schematic structure diagram of the extrusion disc of a fire fighting UAV for dropping fire extinguishing bombs according to the present invention;

[0050] Figure 11 Schematic diagram of the first spring and card slot structure of a fire-fighting drone for dropping fire extinguishing bombs according to the present invention.

[0051] Description of the reference numerals in the figure:

[0052] 1. UAV body; 2. Magazine; 3. Hanger; 4. Control box; 5. Magnetic cover; 6. Installation chassis; 7. Monitoring equipment; 8. Sealing cover assembly; 801. Extrusion disc; 8011. Disc body; 8012. Protrusion; 802. Opening and closing cover; 803. Movable wheel; 804. U-shaped seat; 805. Movable rod; 806. Fixed seat; 807. Installation ear; 808. Push-pull rod; 809. Rotating rod; 810. Movable ring; 811. First spring; 812. Cavity; 813. Card slot; 9. Projection assembly; 901. Lifting ring; 902. Arc seat; 903. Ball; 904. Telescopic rod; 905. Fixed cylinder; 906. Second spring; 10. Magazine slot; 11. Workbench; 12. Fire extinguishing bomb body; 13. Stepper driver; 14. Central axis; 15. Feeding port; 16. Projection port; 17. Loading hole; 18. Installation hole. Specific implementation manners

[0053] The following details the embodiments of the present application. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0054] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0055] In the description of the present application, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0056] The 1st implementation manner:

[0057] Please refer to Figures 1 - 8, the present invention provides a fire-fighting drone for launching fire extinguishing bombs, comprising:

[0058] The drone body 1;

[0059] A bomb storage box 2 installed on the drone body 1. On both sides of the top of the bomb storage box 2 and both sides of the bottom of the drone body 1, hanging brackets 3 are respectively installed. A loading hole 17 is opened at the top of the bomb storage box 2, and a projection opening 16 is opened at the bottom of the bomb storage box 2;

[0060] A workbench 11, which is rotatably arranged in the bomb storage box 2;

[0061] A sealing cover assembly 8, which is arranged at the bottom of the projection opening 16;

[0062] A rotating mechanism, which is installed in the bomb storage box 2 and is used to drive the workbench 11 to rotate and drive the sealing cover assembly 8 to open and close. The rotating mechanism includes an installation hole 18 opened at the middle of the bottom of the bomb storage box 2, and the inner wall of the installation hole 18 is rotatably connected to a central shaft 14 through a bearing. A stepper driver 13 for driving the central shaft 14 to rotate is installed on the inner wall of the top of the bomb storage box 2. The workbench 11 is installed on the central shaft 14;

[0063] A projection assembly 9, which is arranged above the workbench 11;

[0064] The top surface of the workbench 11 is designed to be inclined, and the top surface of the workbench 11 is provided with ammunition storage grooves 10 that are equidistantly inclined. The inside of the ammunition storage grooves 10 is filled with two or more fire extinguishing bomb bodies 12. The bottom end of the ammunition storage grooves 10 is provided with a material guiding port 15 corresponding to the position of the projection port 16, and the top end of the ammunition storage grooves 10 corresponds to the position of the loading hole 17, so that the fire extinguishing bomb bodies 12 can roll orderly towards the bottom material guiding port 15 by virtue of their own gravity and the inclined structure of the ammunition storage grooves 10, providing a basis for efficient delivery. And the rotation angle of the workbench 11 is precisely controlled by a rotation mechanism, so that different ammunition storage grooves 10 are sequentially aligned with the projection port 16, achieving the effect of multi-bomb storage and orderly delivery. The projection assembly 9 includes elastic members equidistantly installed on the inner wall of the top of the ammunition storage box 2, and a lifting ring 901 is installed at the bottom of the elastic member. On one side of the bottom of the lifting ring 901, an arc-shaped seat 902 is installed. The arc-shaped seat 902 is located directly above the material guiding port 15. The elastic member includes a fixed cylinder 905 installed on the inner wall of the top of the ammunition storage box 2, and a telescopic rod 904 inserted into the fixed cylinder 905 is installed at the top of the lifting ring 901. A second spring 906 is installed between the top of the telescopic rod 904 and the inner wall of the top of the fixed cylinder 905. The bottom surface of the arc-shaped seat 902 is designed to be arc-shaped, and multiple columns of balls 903 are arranged in an equidistant and annular distribution on the bottom surface of the arc-shaped seat 902 and roll thereon. When the fire extinguishing bomb approaches the material guiding port 15 driven by the rotation mechanism, the fire extinguishing bomb itself presses the projection assembly 9, causing the elastic member to be compressed, and the arc-shaped seat 902 and the lifting ring 901 to rise. When the fire extinguishing bomb is completely placed above the projection port 16, the compressed state of the elastic member reaches the maximum amplitude. Thus, under the reaction force of the elastic member, the fire extinguishing bomb is quickly ejected from the material guiding port 15 and the projection port 16, enabling the initial velocity of the fire extinguishing bomb to be significantly increased in case of an emergency fire, ensuring that the fire extinguishing bomb arrives quickly, reducing the fire extinguishing time, further reducing the losses caused by the fire, and improving the delivery accuracy of the fire extinguishing bomb at a certain initial velocity.

[0065] In the present invention, an installation base frame 6 is installed at the middle of the bottom of the ammunition storage box 2, and a monitoring device 7 is installed at the middle of the bottom of the installation base frame 6. A control box 4 is installed at the middle of the top of the ammunition storage box 2, and an intelligent control module is arranged inside the control box 4. The intelligent control module is electrically connected to the stepper driver 13 and the monitoring device 7, as Figure 2 、 Figure 3 、and Figure 5 shown. The flight attitude of the drone, the delivery timing and quantity of the fire extinguishing bombs, etc. are remotely controlled through the intelligent control module, and the monitoring device 7 is used to monitor the fire scene situation and the environment below the drone in real time, and transmit the image information back to the intelligent control module. The operator can adjust the action strategy of the drone in a timely manner according to this information to ensure that the fire extinguishing bombs can be accurately delivered to the most needed positions, greatly improving the intelligent level and safety of the fire extinguishing operation.

[0066] In summary: Before deployment, the staff member opens the magnetic cover 5 and places the fire extinguishing bomb body 12 into the ammunition storage box 2 through the ammunition loading hole 17. Since the top surface of the workbench 11 is designed to be inclined and the top end of the ammunition storage groove 10 corresponds to the position of the ammunition loading hole 17, the fire extinguishing bomb body 12 rolls down along the inclined ammunition storage groove 10 under the action of gravity and fills and arranges in the ammunition storage groove 10. Then, the intelligent control module in the control box 4 controls the stepper driver 13 to start. The stepper driver 13 drives the central shaft 14 to rotate, and the central shaft 14 then drives the workbench 11 to rotate. When a certain ammunition storage groove 10 is filled, the workbench 11 rotates, so that the next ammunition storage groove 10 corresponds to the position of the ammunition loading hole 17, thereby filling the next ammunition storage groove 10 with the fire extinguishing bomb body 12. By analogy, the ammunition storage grooves 10 are filled, leaving only the last ammunition storage groove 10 unfilled. At this time, the position of the last ammunition storage groove 10 corresponds to the position of the projection port 16, and then the magnetic cover 5 is closed;

[0067] When it is time to deploy, the flight control system of the UAV body 1 drives the entire deployment facility to move, cooperates with the monitoring device 7 to monitor the fire situation below in real time, and transmits the information to the intelligent control module in the control box 4. The staff member can remotely control the flight attitude of the UAV, the timing and quantity of the fire extinguishing bomb deployment, etc. through the intelligent control module;

[0068] During deployment, the staff member remotely controls the rotation mechanism to work. The stepper driver 13 drives the central shaft 14 to rotate again, driving the workbench 11 and the fire extinguishing bomb body 12 to rotate. When the fire extinguishing bomb body 12 gradually rotates above the projection port 16, during this operation process, the fire extinguishing bomb body 12 will squeeze the projection assembly 9, causing the elastic member to compress, and causing the arc-shaped seat 902 and the lifting ring 901 to gradually rise, so that the elastic member is gradually squeezed to the maximum extent. When the fire extinguishing bomb body 12 moves directly above the projection port 16, the compressive force of the fire extinguishing bomb body 12 on the elastic member disappears, and thus under the reaction force of the elastic member, the fire extinguishing bomb is quickly ejected from the material guiding port 15 and the projection port 16, enabling the initial velocity of the fire extinguishing bomb to be greatly increased in a timely manner during emergency fire extinguishing to ensure that the fire extinguishing bomb arrives quickly.

[0069] The second implementation mode:

[0070] On the basis of the first implementation mode, the following structure is added in this implementation mode, enabling this application to have the function of sealing the entire ammunition storage box 2. The specific settings are as follows: As Figure 3 、 Figure 5 、 Figures 8 - 11As shown in the figure, the sealing cover assembly 8 includes a fixed seat 806 fixed to the bottom of the ammunition storage box 2. A cavity 812 is provided at the center of the fixed seat 806. Both ends of the cavity 812 are provided with moving holes. A moving rod 805 is inserted into the inner wall of the moving hole. A moving ring 810 located in the cavity 812 is fixed to the outer wall of the moving rod 805. One end of the moving ring 810 and one end of the cavity 812 are provided with a first spring 811. One end of the moving rod 805 is fixed with a U-shaped seat 804. A moving wheel 803 is rotatably connected to the inner wall of the U-shaped seat 804. A pressing disc 801 for driving the moving wheel 803 to move reciprocally is installed at the bottom of the central shaft 14. Two rotating rods 809 distributed on both sides of the fixed seat 806 are hinged to the bottom of the ammunition storage box 2. One end of each of the two rotating rods 809 is fixed with an opening and closing cover 802. The two opening and closing covers 802 are attached to the bottom of the projection opening 16. The other end of the moving rod 805 is fixed with a mounting ear 807. Push-pull rods 808 are hinged to the bottom of the two rotating rods 809 on both inner walls of the mounting ear 807. A magnetic attraction cover 5 for sealing the ammunition loading hole 17 is arranged on the top of the ammunition storage box 2. A card slot 813 is provided on one side of each of the two opening and closing covers 802, and the two card slots 813 are distributed vertically. The two opening and closing covers 802 are closed through the two card slots 813. The pressing disc 801 includes a disc body 8011 installed at the bottom of the central shaft 14. A plurality of equally spaced protrusions 8012 are arranged on the outer wall of the disc body 8011. The number of the protrusions 8012 is one less than the number of the ammunition storage grooves 10. The projection opening 16 and the ammunition loading hole 17 are sealed by the sealing cover assembly 8 and the magnetic attraction cover 5 respectively, so that the whole ammunition storage box 2 is in a sealed state, so that the ammunition storage box 2 can be tightly closed in the non-bomb-throwing state, preventing dust, sundries, rainwater, etc. from entering the inside of the ammunition storage box 2, and avoiding problems such as pollution, corrosion, damage and moisture absorption of the fire extinguishing bomb body 12. When the central shaft 14 rotates, the pressing disc 801 in the sealing cover assembly 8 also rotates accordingly. The protrusions 8012 on the pressing disc 801 will press the moving wheel 803, causing the moving rod 805 to slide in the moving hole, the moving ring 810 to compress the first spring 811, the moving rod 805 to move to drive the mounting ear 807 to move, and the two rotating rods 809 to be pushed to rotate around the hinge point through the push-pull rods 808, so that the two opening and closing covers 802 rotate around the hinge point with the bottom of the ammunition storage box 2 to open, exposing the projection opening 16, which is convenient for the delivery operation of the fire extinguishing bomb body 12. When rotating continuously, after the protrusions 8012 on the pressing disc 801 pass by the moving wheel 803, under the elastic force of the first spring 811, the moving rod 805 resets, driving the push-pull rod 808 to pull the rotating rod 809, so that the two opening and closing covers 802 are closed again, which is convenient for sealing the projection opening 16 again.

[0071] Combined with the current actual requirements, the above implementation manner adopted by this application, the protection scope is not limited to this. Within the knowledge scope of those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A fire-fighting drone for dropping fire extinguishing bombs, characterized in that, Comprising: The UAV body (1); A ammunition storage box (2) installed on the UAV body (1), a loading hole (17) is opened at the top of the ammunition storage box (2), and a projection opening (16) is opened at the bottom of the ammunition storage box (2); A workbench (11), the workbench (11) is rotatably arranged in the ammunition storage box (2); A sealing cover assembly (8), the sealing cover assembly (8) is arranged at the bottom of the projection opening (16); A rotating mechanism, the rotating mechanism is installed in the ammunition storage box (2) for driving the workbench (11) to rotate and driving the sealing cover assembly (8) to open and close; A projection assembly (9), the projection assembly (9) is arranged above the workbench (11); The top surface of the workbench (11) is designed to be inclined, and the top surface of the workbench (11) is provided with ammunition storage grooves (10) arranged at equal distances and inclined. Two or more fire extinguishing bomb bodies (12) are filled in the ammunition storage grooves (10). A material guiding port (15) corresponding to the position of the projection opening (16) is opened at the bottom end of the ammunition storage groove (10), and the top end of the ammunition storage groove (10) corresponds to the position of the loading hole (17). The projection assembly (9) includes elastic members installed at equal distances on the inner wall of the top of the ammunition storage box (2), and a lifting ring (901) is installed at the bottom of the elastic member. An arc-shaped seat (902) is installed on one side of the bottom of the lifting ring (901), and the arc-shaped seat (902) is located directly above the material guiding port (15).

2. The fire-fighting drone for launching fire extinguishing bombs according to claim 1, wherein, The elastic member includes a fixed cylinder (905) installed on the inner wall of the top of the ammunition storage box (2), and a telescopic rod (904) inserted into the fixed cylinder (905) is installed at the top of the lifting ring (901). A second spring (906) is installed between the top of the telescopic rod (904) and the inner wall of the top of the fixed cylinder (905).

3. The fire-fighting drone for dropping fire extinguishing bombs according to claim 2, wherein, The bottom surface of the arc-shaped seat (902) is designed to be arc-shaped, and multiple columns of balls (903) arranged at equal distances and distributed in a ring are rotatably arranged on the bottom surface of the arc-shaped seat (902).

4. The fire-fighting drone for launching fire extinguishing bombs according to claim 3, characterized in that, The rotating mechanism includes a mounting hole (18) opened at the middle of the bottom of the ammunition storage box (2), and a central shaft (14) is rotatably connected to the inner wall of the mounting hole (18) through a bearing. A stepper driver (13) for driving the central shaft (14) to rotate is installed on the inner wall of the top of the ammunition storage box (2), and the workbench (11) is installed on the central shaft (14).

5. The fire-fighting drone for dropping fire extinguishing bombs according to claim 4, characterized in that, The sealing cover assembly (8) includes a fixed seat (806) fixed to the bottom of the ammunition storage box (2), and a cavity (812) is provided in the center of the fixed seat (806). Moving holes are provided at both ends of the cavity (812), and moving rods (805) are inserted into the inner walls of the moving holes. A moving ring (810) located in the cavity (812) is fixed to the outer wall of the moving rod (805), and a first spring (811) is installed between one end of the moving ring (810) and one end of the cavity (812). One end of the moving rod (805) is fixed with a U-shaped seat (804), and a moving wheel (803) is rotatably connected to the inner wall of the U-shaped seat (804). An extrusion disc (801) for driving the moving wheel (803) to move reciprocally is installed at the bottom of the central shaft (14). Two rotating rods (809) distributed on both sides of the fixed seat (806) are hinged to the bottom of the ammunition storage box (2). One end of each of the two rotating rods (809) is fixed with an opening and closing cover (802). The two opening and closing covers (802) are attached to the bottom of the projection opening (16). The other end of the moving rod (805) is fixed with a mounting ear (807), and push-pull rods (808) are hinged between the inner walls on both sides of the mounting ear (807) and the bottoms of the two rotating rods (809). A magnetic suction cover (5) for sealing the ammunition loading hole (17) is provided at the top of the ammunition storage box (2).

6. The fire-fighting UAV for dropping fire extinguishing bombs according to claim 5, characterized in that, Card slots (813) are provided on one side of each of the two opening and closing covers (802), and the two card slots (813) are distributed vertically. The two opening and closing covers (802) are closed through the two card slots (813).

7. The fire-fighting drone for dropping fire extinguishing bombs according to claim 6, characterized in that, The extrusion disc (801) includes a disc body (8011) installed at the bottom of the central shaft (14), and protrusions (8012) are provided at equal intervals on the outer wall of the disc body (8011). The number of protrusions (8012) is one less than the number of ammunition storage slots (10).

8. The fire-fighting drone for launching fire extinguishing bombs according to claim 7, characterized in that, A mounting chassis (6) is installed at the middle of the bottom of the ammunition storage box (2), and a monitoring device (7) is installed at the middle of the bottom of the mounting chassis (6).

9. The fire-fighting UAV for launching fire extinguishing bombs according to claim 8, characterized in that, A control box (4) is installed at the middle of the top of the ammunition storage box (2), and an intelligent control module is provided inside the control box (4). The intelligent control module is electrically connected to the stepper driver (13) and the monitoring device (7).

10. A fire-fighting drone for dropping fire extinguishing bombs according to claim 1, characterized in that, Hangers (3) are respectively installed between the two sides of the top of the ammunition storage box (2) and the two sides of the bottom of the UAV body (1).

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