Fire-fighting unmanned aerial vehicle for throwing fire extinguishing bombs

Abstract

The invention relates to a fire-fighting unmanned aerial vehicle for throwing fire extinguishing bombs in the technical field of fire fighting. The fire-fighting unmanned aerial vehicle comprises an unmanned aerial vehicle body; the bomb storage box is installed on the unmanned aerial vehicle body, a bomb loading hole is formed in the top of the bomb storage box, and a projection opening is formed in the bottom of the bomb storage box; the working table is rotationally arranged in the bullet storage box; the sealing cover assembly is arranged at the bottom of the projection opening; and the rotating mechanism is installed in the bullet storage box and used for driving the workbench to rotate and driving the sealing cover assembly to be opened and closed. The effects of multi-bomb storage and orderly throwing are achieved, the fire extinguishing bombs are rapidly ejected out of the material guiding opening and the throwing opening under the counter-acting force of the elastic piece, the initial speed of the fire extinguishing bombs is greatly increased, it is ensured that the fire extinguishing bombs rapidly arrive, the whole bomb storage box is in a sealed state when fire extinguishing is not conducted, the problems of pollution, corrosion, damage, damp and the like are avoided, and the fire extinguishing effect is improved. And the performance and the reliability of the fire extinguishing bomb are not influenced.

Description

Technical Field

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

[0002] With the rapid development of urban construction and the widespread distribution of forest resources, fire hazards are increasing, and the complexity and danger of fire accidents are also increasing. Traditional fire-fighting methods are often subject to many limitations when facing fires deep in the forest and fires in complex terrain. For example, in forest fires, the terrain is complex and it is difficult for fire trucks to go deep, which makes it difficult to carry out fire-fighting work. Due to the advantages of quick response and strong maneuverability, drones 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 certain shortcomings: most drones use the method of hanging fire-fighting bombs to load fire-fighting bombs, and then rely on the gravity of the fire-fighting bombs to drop fire-fighting bombs from top to bottom, but the number of fire-fighting bombs they carry is limited, and sometimes they can only carry one or two fire-fighting bombs. After the projection is completed, they need to return to load the fire-fighting bombs again, which is inefficient.

[0003] In order to solve the problem of limited ammunition capacity, a firefighting drone on the market that is used to drop fire-extinguishing bombs adopts a bomb storage box design that can carry most fire-extinguishing bombs, and has a certain market share.

[0004] After searching, the invention patent with the authorization announcement number CN114344762B discloses a firefighting drone for dropping fire extinguishing bombs, which is provided with: a drone fuselage; a fixed top plate is fixedly connected to the lower end face of the drone fuselage, and a fixed connecting column is connected to the end face of the fixed top plate; a buffer device is fixed at the lower end of the fixed plate, and a mounting plate is fixedly connected to the lower end of the buffer device, and a bomb storage box is provided at the lower end of the mounting plate, and a loading hole is provided on one side of the bomb storage box; a fire extinguishing bomb transmission box is fixed at the lower end of the bomb storage box, and a transmission device is fixed in the fire extinguishing bomb transmission box, and a fire extinguishing bomb transmission channel is fixed at the lower end of the fire extinguishing bomb transmission box, and a fire extinguishing bomb launch box is fixed at the lower end of the fire extinguishing bomb transmission channel to launch fire extinguishing bombs through the launch port on the fire extinguishing bomb launch box. The present invention provides a spiral pipe inside the fire extinguishing bomb transmission box, and the spiral pipe is connected to the outlet pipe, so that the fire extinguishing bomb can be projected in the horizontal direction, avoiding the danger of explosion of the aircraft at the upper end of the fire source due to excessive temperature.

[0005] Based on the above search, it is found that the prior art has certain deficiencies: although the prior art solves the problem of insufficient ammunition load, when the fire extinguishing bomb is thrown horizontally to the fire location after the fire extinguishing bomb is passed through the spiral groove by gravity to obtain a certain horizontal speed, the spiral feeding device relies on the spiral structure to rotate and push the fire extinguishing bomb, and its rotation speed change adjustment is relatively difficult. It is difficult to accurately and quickly change the initial velocity of the fire extinguishing bomb according to complex conditions such as the urgency of the fire and the distance. That is, during emergency fire fighting, the drone takes off above the fire and cannot significantly increase the initial velocity in time to ensure the arrival of the fire extinguishing bomb, which increases the fire extinguishing time and further increases the losses caused by the fire. Therefore, it is urgent to propose a fire-fighting drone for delivering fire extinguishing bombs to improve the above problems. Summary of the invention

[0006] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that during emergency firefighting, the drone takes off above the fire and cannot significantly increase its initial speed in time to ensure the arrival of the fire-extinguishing bomb, which increases the fire-fighting time and further increases the losses caused by the fire.

[0007] In order to solve the above problems, the present invention provides a firefighting drone for dropping fire extinguishing bombs, comprising: The drone itself; An ammunition storage box installed on the UAV body, wherein a loading hole is provided on the top of the ammunition storage box and a projection port is provided on the bottom of the ammunition storage box; A workbench, the workbench is rotatably arranged in the ammunition storage box; A sealing cover assembly, wherein the sealing cover assembly is arranged at the bottom of the projection opening; A rotating mechanism, which is installed in the ammunition storage box and is used to drive the workbench to rotate and drive the sealing cover assembly to open and close; A projection assembly, wherein the projection assembly is arranged above the workbench; The top surface of the workbench is designed to be inclined, and the top surface of the workbench is provided with equidistant and inclined bullet storage grooves, the interior of the bullet storage grooves is filled with two or more fire extinguishing bomb bodies, the bottom end of the bullet storage groove is provided with a material guide port corresponding to the position of the projection port, and the top of the bullet storage groove corresponds to the position of the loading hole, the projection assembly includes elastic parts equidistantly installed on the top inner wall of the bullet storage box, and a lifting ring is installed at the bottom of the elastic part, and an arc seat is installed on one side of the bottom of the lifting ring, and the arc seat is located directly above the material guide port.

[0008] Through the above technical scheme: the fire extinguishing bomb is quickly ejected from the guide port and the projection port under the reaction force of the elastic member, so that in emergency fire fighting, the initial velocity of the fire extinguishing bomb can be greatly increased in time, the loss caused by the fire can be reduced, and the delivery accuracy of the fire extinguishing bomb can be improved at a certain initial velocity.

[0009] The present invention is further configured such that the elastic member includes a fixed tube installed on the top inner wall of the ammunition storage box, and a telescopic rod inserted in the fixed tube is installed on the top of the lifting ring, and a second spring is installed on the top of the telescopic rod and the top inner wall of the fixed tube.

[0010] Through the above technical solution: ensure that the fire-extinguishing bombs arrive quickly and reduce the fire-fighting time.

[0011] The present invention is further configured such that the bottom surface of the arc seat is designed to be an arc surface, and a plurality of rows of balls equidistantly distributed in a ring shape are rollingly arranged on the bottom surface of the arc seat.

[0012] Through the above technical solution: the arc seat can contact the fire extinguishing bomb with a smaller friction force, effectively avoiding the fire extinguishing bomb from being stuck, offset, etc. during the pushing process.

[0013] The present invention is further configured such that the rotating mechanism includes a mounting hole opened in the middle of the bottom of the ammunition storage box, and the inner wall of the mounting hole is rotatably connected to the central axis through a bearing, and a stepping driver for driving the central axis to rotate is installed on the top inner wall of the ammunition storage box, and the workbench is installed on the central axis.

[0014] Through the above technical solution: the rotation angle of the workbench can be accurately controlled so that different bullet storage slots are aligned with the projection port in sequence.

[0015] The present invention is further configured as follows: the sealing cover assembly includes a fixed seat fixed to the bottom of the ammunition storage box, and a cavity is arranged in the center of the fixed seat, movable holes are opened at both ends of the cavity, and a movable rod is inserted into the inner wall of the movable hole, an movable ring located in the cavity is fixed to the outer wall of the movable rod, and a first spring is installed at one end of the movable ring and one end of the cavity, a U-shaped seat is fixed to one end of the movable rod, and a movable wheel is rotatably connected to the inner wall of the U-shaped seat, and an extrusion plate for driving the movable wheel to reciprocate is installed at the bottom of the central axis, the bottom of the ammunition storage box is hinged with two rotating rods distributed on both sides of the fixed seat, one end of the two rotating rods are fixed with an opening and closing cover, the two opening and closing covers are attached to the bottom of the projection port, the other end of the movable rod is fixed with a mounting ear, and the inner walls on both sides of the mounting ear are hinged with push-pull rods to the bottom of the two rotating rods, and a magnetic suction cover for sealing the loading hole is arranged on the top of the ammunition storage box.

[0016] Through the above technical solution: the entire ammunition storage box is in a sealed state, so that the ammunition storage box can be tightly closed in the non-bombing state, preventing external dust, debris and rainwater from entering the interior of the ammunition storage box, avoiding pollution, corrosion, damage, moisture and other problems to the fire extinguishing bomb body.

[0017] The present invention is further configured such that a card slot is provided on one side of the two opening and closing covers, and the two card slots are distributed up and down, and the two opening and closing covers are closed by the two card slots.

[0018] Through the above technical solution: the two opening and closing covers are closed by the card slot, forming a double insurance mechanism to improve the sealing performance.

[0019] The present invention is further configured such that the extrusion disk includes a disk body installed at the bottom of the central axis, and the outer wall of the disk body is provided with protrusions distributed at equal distances, and the number of the protrusions is one less than the number of the bullet storage slots.

[0020] Through the above technical solution: each time the extrusion disk rotates, the opening and closing of the sealing cover can be controlled regularly to adapt to different fire extinguishing rhythm requirements.

[0021] The present invention is further configured such that a mounting base is installed in the middle of the bottom of the ammunition storage box, and a monitoring device is installed in the middle of the bottom of the mounting base.

[0022] Through the above technical solution: real-time monitoring of the fire scene and the environment below the drone.

[0023] The present invention is further configured such that a control box is installed in the middle of the top of the ammunition storage box, and an intelligent control module is arranged inside the control box, and the intelligent control module is electrically connected to the stepping drive and the monitoring equipment.

[0024] Through the above technical solutions: the intelligence level of fire-fighting operations is improved.

[0025] The present invention is further configured such that hangers are respectively installed on both sides of the top of the ammunition storage box and both sides of the bottom of the drone body.

[0026] Through the above technical solution: the ammunition storage box is installed on both sides of the bottom of the UAV body through the hanger, so that the weight of the ammunition storage box can be evenly distributed on the UAV, ensuring the stability of the UAV during flight.

[0027] In summary, after adopting the above structure, the present invention has the following advantages compared with the prior art: 1. A plurality of ammunition storage slots are provided on the workbench to achieve the effect of multi-bomb storage and orderly delivery. The loading hole on the top of the ammunition storage box is convenient for quick loading of fire extinguishing bombs. The workbench with an inclined interior and equidistant inclined ammunition storage slots can accommodate two or more fire extinguishing bomb bodies in a single ammunition storage slot. This design enables the fire extinguishing bomb to roll toward the guide port at the bottom in an orderly manner with the help of its own gravity and the inclined ammunition storage slot structure, providing a basis for efficient delivery. When facing a large-scale fire, a large number of fire extinguishing bombs can be quickly put in place and ready to be delivered at any time, which greatly saves the preparation time of the fire extinguishing bombs. The stepping drive in the rotating mechanism drives the central axis to rotate, and then drives the workbench to rotate. The rotation angle of the workbench can be accurately controlled, so that different ammunition storage slots are aligned with the delivery port in sequence, and accurate bomb delivery is achieved in sequence, realizing automated operation.

[0028] 2. The design of the elastic part and the arc seat in the projection assembly can be adopted. When the fire extinguishing bomb is driven close to the guide port through the rotating mechanism, the fire extinguishing bomb itself squeezes the projection assembly, so that the elastic part is compressed, and the arc seat and the lifting ring rise. When the fire extinguishing bomb is completely placed above the projection port, the elastic part is squeezed to the maximum extent, so that the fire extinguishing bomb is quickly ejected from the guide port and the projection port under the reaction force of the elastic part. In the case of emergency fire fighting, the initial velocity of the fire extinguishing bomb can be greatly increased in time to ensure that the fire extinguishing bomb arrives quickly, reducing the fire extinguishing time, further reducing the loss caused by the fire, and improving the delivery accuracy of the fire extinguishing bomb at a certain initial velocity.

[0029] 3. By designing the bottom surface of the arc seat into an arc shape and rolling with multiple rows of equally spaced circularly distributed balls, the arc seat can contact the fire extinguishing bomb with a smaller friction force, effectively avoiding the jamming and offset of the fire extinguishing bomb during the pushing process, achieving precise single bomb delivery, and improving the accuracy of fire extinguishing bomb delivery.

[0030] 4. A sealing cover assembly linked to the rotating mechanism and a magnetic cover for sealing the loading hole are used. When the fire is not extinguished, the sealing cover assembly and the magnetic cover are used to seal the projection port and the loading hole respectively, so that the entire ammunition storage box is in a sealed state, so that the ammunition storage box can be tightly closed in the non-bombing state to prevent external dust and debris from entering the storage box, avoiding pollution, corrosion or damage to the fire extinguishing bomb, ensuring that the performance and reliability of the fire extinguishing bomb are not affected, and at the same time, it can also block the entry of rainwater, prevent the fire extinguishing bomb from failing due to moisture, and ensure that it can function normally when it is needed; when extinguishing a fire, through the cooperation of the extrusion plate and the sealing cover assembly, when the fire extinguishing bomb rotates to the guide port, the opening and closing cover can be automatically opened, so that the projection port is open, which is convenient for bombing.

[0031] 5. The monitoring equipment installed at the bottom of the mounting frame can be used to observe the fire situation below in real time, providing a basis for bombing. The intelligent control module in the control box is electrically connected to the stepper driver and the monitoring equipment, which is convenient for the operator to remotely control the bombing action of the drone according to the monitoring screen, thereby improving the intelligence level and safety of firefighting operations. The ammunition storage box is installed on both sides of the bottom of the drone body through a hanger. This installation method allows the weight of the ammunition storage box to be evenly distributed on the drone, ensuring the stability of the drone during flight. The design of the hanger can be adjusted and adapted according to the bottom structure of different types of drones, so that this fire-fighting drone system for dropping fire-extinguishing bombs can be applied to various types of drones, thereby increasing the application scope and promotion value of the technology and reducing the cost that the fire department needs to invest in equipping professional fire-fighting drones. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1This is a schematic diagram of the three-dimensional structure of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 2 This is a schematic diagram of the structure of a bomb storage box and a hanger of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 3 A bottom view of a bomb storage box of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 4 A three-dimensional cross-sectional view of a bomb storage box of a firefighting drone for dropping fire-extinguishing bombs according to the present invention; Figure 5 This is a front cross-sectional view of a bomb storage box of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 6 This is a schematic diagram of the structure of a projection component of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 7 This is a schematic diagram of the working platform and central axis structure of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Figure 8 This is a schematic diagram of the structure of the loading hole and the mounting hole of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Fig. 9 This is a schematic structural diagram of a sealing cover assembly of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Fig.10 This is a schematic diagram of the structure of an extrusion plate of a firefighting drone for dropping fire extinguishing bombs according to the present invention; Fig.11 The present invention is a schematic diagram of a first spring and a card slot structure of a fire-fighting drone for dropping fire-extinguishing bombs.

[0033] Description of the numbers in the figure: 1. UAV body; 2. Ammunition storage box; 3. Hanger; 4. Control box; 5. Magnetic cover; 6. Mounting chassis; 7. Monitoring equipment; 8. Sealing cover assembly; 801. Squeeze plate; 8011. Plate body; 8012. Protrusion; 802. Opening and closing cover; 803. Movable wheel; 804. U-shaped seat; 805. Movable rod; 806. Fixed seat; 807. Mounting ear; 808. Push-pull rod; 809. Rotating rod; 810. Movable Ring; 811, first spring; 812, cavity; 813, slot; 9, projection assembly; 901, lifting ring; 902, arc seat; 903, ball bearing; 904, telescopic rod; 905, fixing tube; 906, second spring; 10, bullet storage slot; 11, workbench; 12, fire extinguisher bomb body; 13, stepping drive; 14, center axis; 15, guide port; 16, projection port; 17, loading hole; 18, mounting hole. DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected or set, or detachably connected or set, or integrally connected or set. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The first implementation method: See also Figure 1-Figure 8 The present invention provides a firefighting drone for dropping fire extinguishing bombs, comprising: UAV body 1; An ammunition storage box 2 is installed on the UAV body 1, and hangers 3 are respectively installed on both sides of the top of the ammunition storage box 2 and both sides of the bottom of the UAV body 1, a loading hole 17 is opened on the top of the ammunition storage box 2, and a projection port 16 is opened on the bottom of the ammunition storage box 2; A workbench 11 is rotatably disposed 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 is installed in the ammunition 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 a mounting hole 18 provided in the middle of the bottom of the ammunition storage box 2, and the inner wall of the mounting hole 18 is rotatably connected with the central shaft 14 through a bearing. A stepping driver 13 for driving the central shaft 14 to rotate is installed on the top inner wall of the ammunition storage box 2, and the workbench 11 is installed on the central shaft 14; A projection assembly 9, which is arranged above a 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 equidistant and inclined bullet storage slots 10, the inside of the bullet storage slots 10 is filled with two or more fire extinguishing bomb bodies 12, and the bottom end of the bullet storage slots 10 is provided with a guide port 15 corresponding to the position of the projection port 16, and the top of the bullet storage slots 10 corresponds to the position of the loading hole 17, so that the fire extinguishing bomb body 12 can roll toward the guide port 15 at the bottom in an orderly manner with the help of its own gravity and the inclined bullet storage slot 10 structure, which provides a basis for efficient delivery, and the rotation angle of the workbench 11 is accurately controlled by the rotating mechanism, so that different bullet storage slots 10 are aligned with the projection port 16 in turn, so as to achieve the effect of multi-bullet storage and orderly delivery, and the projection assembly 9 includes an elastic member installed at an equal distance on the inner wall of the top of the bullet storage box 2, and a lifting ring 901 is installed at the bottom of the elastic member, and an arc seat 902 is installed on one side of the bottom of the lifting ring 901, and the arc seat 902 is located directly above the guide port 15, and the elastic member includes a spring installed on the top of the bullet storage box 2 The top of the lifting ring 901 is provided with a telescopic rod 904 inserted in the fixed cylinder 905, and the top of the telescopic rod 904 and the top inner wall of the fixed cylinder 905 are provided with a second spring 906. The bottom surface of the arc seat 902 is designed to be an arc surface, and the bottom surface of the arc seat 902 is provided with a plurality of rows of equidistant and annularly distributed balls 903. When the fire extinguishing bomb is driven close to the guide port 15 by the rotating mechanism, the fire extinguishing bomb itself squeezes the projection assembly 9, so that the elastic member presses The elastic member 901 is compressed, so that the arc seat 902 and the lifting ring 901 rise. When the fire extinguishing bomb is completely placed above the projection port 16, the elastic member is squeezed to the maximum extent, so that the fire extinguishing bomb is quickly ejected from the guide port 15 and the projection port 16 under the reaction force of the elastic member. In emergency fire fighting, the initial velocity of the fire extinguishing bomb can be greatly increased in time to ensure that the fire extinguishing bomb arrives quickly, reducing the fire fighting time, further reducing the loss caused by the fire, and improving the delivery accuracy of the fire extinguishing bomb at a certain initial velocity.

[0038] In the present invention, a mounting base 6 is installed in the middle of the bottom of the ammunition storage box 2, and a monitoring device 7 is installed in the middle of the bottom of the mounting base 6, a control box 4 is installed in the middle of the top of the ammunition storage box 2, and an intelligent control module is arranged inside the control box 4, and the intelligent control module is electrically connected to the stepping driver 13 and the monitoring device 7, such as Figure 2 , Figure 3 ,and Figure 5 As shown, the flight attitude of the UAV, the timing and quantity of the release of fire-extinguishing bombs, etc. are remotely controlled by the intelligent control module, and the monitoring device 7 is used to monitor the fire scene and the environment below the UAV in real time, and the image information is transmitted back to the intelligent control module. The operator can adjust the action strategy of the UAV in time according to this information to ensure that the fire-extinguishing bombs can be accurately released to the most needed position, which greatly improves the intelligence level and safety of the fire-fighting operation.

[0039] In summary: before delivery, the staff opens the magnetic cover 5, and puts the fire extinguishing bomb body 12 into the ammunition storage box 2 through the loading hole 17. Since the top surface of the workbench 11 is designed to be inclined, and the top of the ammunition storage slot 10 corresponds to the position of the loading hole 17, the fire extinguishing bomb body 12 rolls down along the inclined ammunition storage slot 10 under the action of gravity to the ammunition storage slot 10 for filling and arrangement, and the stepping driver 13 is controlled to start by the intelligent control module in the control box 4, and the stepping 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 slot 10 is filled, the workbench 11 rotates so that the next ammunition storage slot 10 corresponds to the position of the loading hole 17, so that the next ammunition storage slot 10 is filled with the fire extinguishing bomb body 12, and so on, fill the ammunition storage slots 10, leaving only the last ammunition storage slot 10 unfilled, at which time the position of the last ammunition storage slot 10 corresponds to the position of the projection port 16, and then close the magnetic cover 5; When the release is ready, the flight control system of the drone body 1 drives the entire release facility to move, cooperates with the monitoring equipment 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 can remotely control the flight posture of the drone, the release time and quantity of the fire extinguishing bomb, etc. through the intelligent control module; When launching, the staff remotely controls the rotating mechanism to rotate, and drives the central axis 14 to rotate again through the stepping driver 13, and drives the workbench 11 and the fire extinguishing bomb body 12 to rotate. When the fire extinguishing bomb body 12 gradually rotates to above the projection port 16, the fire extinguishing bomb body 12 will squeeze the projection assembly 9 during this operation, so that the elastic member is compressed, and the arc seat 902 and the lifting ring 901 gradually rise, so that the elastic member is gradually squeezed to the maximum extent. When the fire extinguishing bomb body 12 moves to just above the projection port 16, the compression force of the fire extinguishing bomb body 12 on the elastic member disappears, so that the fire extinguishing bomb is quickly ejected from the guide port 15 and the projection port 16 under the reaction force of the elastic member, so that in emergency fire fighting, the initial velocity of the fire extinguishing bomb can be greatly increased in time to ensure that the fire extinguishing bomb arrives quickly.

[0040] Second implementation method: On the basis of the first embodiment, this embodiment adds the following structure, so that the present application has the function of sealing the entire ammunition storage box 2, and the specific configuration is as follows: Figure 3 , Figure 5 , Figure 8-Figure 11As shown, 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 arranged at the center of the fixed seat 806, movable holes are opened at both ends of the cavity 812, and a movable rod 805 is inserted into the inner wall of the movable hole, and a movable ring 810 located in the cavity 812 is fixed to the outer wall of the movable rod 805, and a first spring 811 is installed at one end of the movable ring 810 and one end of the cavity 812, a U-shaped seat 804 is fixed to one end of the movable rod 805, and a movable wheel 803 is rotatably connected to the inner wall of the U-shaped seat 804, an extrusion plate 801 for driving the movable wheel 803 to reciprocate is installed at the bottom of the central shaft 14, and the bottom of the ammunition storage box 2 is hinged with Two rotating rods 809 are distributed on both sides of the fixed seat 806, and one end of the two rotating rods 809 is fixed with an opening and closing cover 802, and the two opening and closing covers 802 are fitted at the bottom of the projection port 16. The other end of the movable rod 805 is fixed with a mounting ear 807, and the inner walls on both sides of the mounting ear 807 are hinged with push-pull rods 808 at the bottom of the two rotating rods 809. The top of the ammunition storage box 2 is provided with a magnetic cover 5 for sealing the loading hole 17. One side of the two opening and closing covers 802 is provided with a card slot 813, and the two card slots 813 are distributed up and down. The two opening and closing covers 802 are closed by the two card slots 813. The extrusion disk 801 includes a disk body 8011 installed at the bottom of the central axis 14 , and the outer wall of the disk body 8011 is provided with equidistantly distributed protrusions 8012, the number of the protrusions 8012 is one less than the number of the bullet storage slots 10, and the projection port 16 and the loading hole 17 are sealed respectively by the sealing cover assembly 8 and the magnetic cover 5, so that the entire bullet storage box 2 is in a sealed state, so that the bullet storage box 2 can be tightly closed in the non-bombing state to prevent external dust, debris and rainwater from entering the inside of the bullet storage box 2, and avoid pollution, corrosion, damage and moisture to the fire extinguishing bomb body 12. When the central shaft 14 rotates, the squeezing disk 801 in the sealing cover assembly 8 is also driven to rotate accordingly, and the protrusion 8012 on the squeezing disk 801 will squeeze the movable wheel 803, so that the movable wheel 803 The movable rod 805 slides in the movable hole, and the movable ring 810 compresses the first spring 811. The movable rod 805 moves to drive the mounting ear 807 to move, and the push-pull rod 808 pushes the two rotating rods 809 to rotate around the hinge point, 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 port 16, which is convenient for the delivery operation of the fire extinguishing bomb body 12. When continuing to rotate, after the protrusion 8012 on the extrusion plate 801 rotates past the movable wheel 803, under the elastic force of the first spring 811, the movable rod 805 is reset, 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 port 16 again.

[0041] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A firefighting drone for dropping fire extinguishing bombs, characterized in that: include: UAV body (1); An ammunition storage box (2) mounted on the drone body (1), wherein a loading hole (17) is provided on the top of the ammunition storage box (2), and a projection port (16) is provided on the bottom of the ammunition storage box (2); a workbench (11), the workbench (11) being rotatably disposed in the ammunition storage box (2); A sealing cover assembly (8), the sealing cover assembly (8) being arranged at the bottom of the projection opening (16); A rotating mechanism, the rotating mechanism being installed in the ammunition storage box (2) and being used to drive the workbench (11) to rotate and drive the sealing cover assembly (8) to open and close; A projection component (9), wherein the projection component (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 equidistant and inclined bullet storage grooves (10), the inside of which is filled with two or more fire extinguishing bomb bodies (12), the bottom end of the bullet storage groove (10) is provided with a material guide port (15) corresponding to the position of the projection port (16), and the top end of the bullet storage groove (10) corresponds to the position of the bullet loading hole (17), and the projection assembly (9) comprises an elastic member equidistantly mounted on the top inner wall of the bullet storage box (2), and a lifting ring (901) is mounted on the bottom of the elastic member, and an arc seat (902) is mounted on one side of the bottom of the lifting ring (901), and the arc seat (902) is located directly above the material guide port (15).

2. A firefighting drone for dropping fire extinguishing bombs according to claim 1, characterized in that: The elastic member comprises a fixed cylinder (905) mounted on the top inner wall of the ammunition storage box (2), and a telescopic rod (904) inserted into the fixed cylinder (905) is mounted on the top of the lifting ring (901), and a second spring (906) is mounted on the top of the telescopic rod (904) and the top inner wall of the fixed cylinder (905).

3. A firefighting drone for dropping fire extinguishing bombs according to claim 2, characterized in that: The bottom surface of the arc-shaped seat (902) is designed to be an arc-shaped, and a plurality of rows of rolling balls (903) equidistantly distributed in a ring shape are rollingly arranged on the bottom surface of the arc-shaped seat (902).

4. A firefighting drone for dropping fire extinguishing bombs according to claim 3, characterized in that: The rotating mechanism comprises a mounting hole (18) provided in the middle of the bottom of the ammunition storage box (2), and the inner wall of the mounting hole (18) is rotatably connected to a central shaft (14) via a bearing, a stepping driver (13) for driving the central shaft (14) to rotate is installed on the top inner wall of the ammunition storage box (2), and a workbench (11) is installed on the central shaft (14).

5. A firefighting drone for dropping fire extinguishing bombs according to claim 4, characterized in that: The sealing cover assembly (8) comprises a fixing seat (806) fixed to the bottom of the ammunition storage box (2), and a cavity (812) is arranged at the center of the fixing seat (806), movable holes are opened at both ends of the cavity (812), and a movable rod (805) is inserted into the inner wall of the movable hole, and a movable ring (810) located in the cavity (812) is fixed to the outer wall of the movable rod (805), and a first spring (811) is installed between one end of the movable ring (810) and one end of the cavity (812), and a U-shaped seat (804) is fixed to one end of the movable rod (805), and the inner wall of the U-shaped seat (804) is rotatably connected to a movable wheel (803), and the central shaft (14) is fixed to the outer wall of the movable rod (805). A squeezing plate (801) for driving a movable wheel (803) to reciprocate is installed at the bottom. The bottom of the ammunition storage box (2) is hinged with two rotating rods (809) distributed on both sides of a fixing seat (806). One end 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 movable rod (805) is fixed with a mounting ear (807). The inner walls on both sides of the mounting ear (807) are hinged with push-pull rods (808) at the bottom of the two rotating rods (809). The top of the ammunition storage box (2) is provided with a magnetic suction cover (5) for sealing the loading hole (17).

6. A firefighting drone for dropping fire extinguishing bombs according to claim 5, characterized in that: A locking slot (813) is provided on one side of the two opening and closing covers (802), and the two locking slots (813) are distributed up and down, and the two opening and closing covers (802) are closed by the two locking slots (813).

7. A firefighting drone for dropping fire extinguishing bombs according to claim 6, characterized in that: The extrusion disk (801) comprises a disk body (8011) mounted at the bottom of the central shaft (14), and the outer wall of the disk body (8011) is provided with protrusions (8012) distributed at equal distances, and the number of the protrusions (8012) is one less than the number of the bullet storage slots (10).

8. A firefighting drone for dropping fire extinguishing bombs according to claim 7, characterized in that: A mounting frame (6) is installed in the middle of the bottom of the ammunition storage box (2), and a monitoring device (7) is installed in the middle of the bottom of the mounting frame (6).

9. A firefighting drone for dropping fire extinguishing bombs according to claim 8, characterized in that: A control box (4) is installed in the middle of the top of the ammunition storage box (2), and an intelligent control module is arranged inside the control box (4), and the intelligent control module is electrically connected to the stepping driver (13) and the monitoring device (7).

10. The firefighting drone for dropping fire extinguishing bombs according to claim 1, characterized in that: Hangers (3) are respectively installed on both sides of the top of the ammunition storage box (2) and both sides of the bottom of the drone body (1).

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