Coal field fire extinguishing system based on cooperative operation of unmanned aerial vehicles

Abstract

The invention relates to the technical field of coal field fire extinguishing, and discloses a coal field fire extinguishing system based on unmanned aerial vehicle collaborative operation, first extrusion plates are installed at the two end faces of the lower surface of a pressing plate, springs are symmetrically arranged on one side face of a connecting plate, and clamping plates are arranged at one ends of the springs; a second extrusion plate is mounted on one side surface of the clamping plate; a control box is installed on the lower surface of the water tank, a second water pipe is arranged on the lower surface of the control box in a penetrating mode, the lower end of the second water pipe communicates with a connecting pipe, the lower end of the connecting pipe communicates with a water spraying pipe, nozzles are symmetrically arranged on the lower surface of the water spraying pipe, and a water suction pump is arranged in the water tank. A first gear rotates through work of a motor, the angle of a water spraying pipe can be finely adjusted through meshing of the first gear, a second gear and a third gear, and meanwhile the purpose that a second rotating shaft rotates to stir the interior of a water tank is achieved through meshing of a first bevel gear and a second bevel gear.

Description

Technical Field

[0001] This invention relates to the field of coalfield fire extinguishing technology, specifically a coalfield fire extinguishing system based on drone collaborative operations. Background Technology

[0002] A coalfield is a region containing coal seams, typically referring to a vast area with coal resources. The coal seams within a coalfield can be mined. Coal is an important energy resource. A coalfield usually consists of multiple coal seams, and its distribution and scale have a significant impact on coal mining activities.

[0003] During coalfield mining, coal spontaneous combustion fires can occur due to natural factors (such as lightning strikes and drought), as well as fires that occur during manual mining or transportation. These fires not only waste mineral resources but also pollute the surrounding environment and atmosphere. Therefore, it is necessary to extinguish coalfield fires promptly.

[0004] The development of drones is rapid. Drones can provide a real-time aerial perspective to help monitor the progress of coalfield fires, detect fire sources in a timely manner, and accurately locate fire areas, thereby enabling effective firefighting measures to be taken.

[0005] For example, a Chinese patent discloses a fire-fighting drone (authorization announcement number CN214808005U). This patented technology includes a drone frame, comprising an onboard power supply, an onboard water tank, a pump body, a water supply pipe, a water gun, and a mounting assembly. The onboard power supply, water tank, and pump body are all mounted on the drone frame. The onboard power supply is connected to the pump body, the water tank is connected to the pump body's inlet, the pump body's outlet is connected to the water gun via the water supply pipe, and the water gun is detachably connected to the drone frame via the mounting assembly. The fire-fighting drone provided by this invention has the advantages of a wide fire-fighting range and convenient adjustment.

[0006] However, most existing drones are installed with water tanks using bolts, which is inconvenient for installation and disassembly. Furthermore, when using drones for coalfield firefighting, the nozzle angle cannot be adjusted during fire suppression, resulting in poor firefighting effectiveness. Therefore, those skilled in the art have proposed a coalfield firefighting system based on drone collaborative operations to address the problems mentioned in the background. Summary of the Invention

[0007] The purpose of this invention is to provide a coalfield fire extinguishing system based on unmanned aerial vehicle (UAV) collaborative operation to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A coalfield fire extinguishing system based on drone collaborative operation includes a drone body, an arm mounted on the outside of the drone body, and a rotor mounted on the upper surface of the arm. A connecting plate is installed on the lower surface of the drone body. A placement plate is fixed to one side of the connecting plate, and a positioning plate is installed above the placement plate on the other side of the connecting plate. An electric lifting rod is installed on the lower surface of the positioning plate. A pressure plate is connected to the lower end of the electric lifting rod. A first pressing plate is installed at both ends of the lower surface of the pressure plate. Springs are symmetrically arranged on one side of the connecting plate. A clamping plate is provided at one end of each spring. A second pressing plate is installed on one side of the clamping plate.

[0010] A control box is installed on the lower surface of the water tank. A second water pipe is installed through the lower surface of the control box. The lower end of the second water pipe is connected to a connecting pipe. The lower end of the connecting pipe is connected to a spray pipe. Spray nozzles are symmetrically arranged on the lower surface of the spray pipe. A water pump is installed inside the water tank. The outlet end of the water pump is connected to a first water pipe. A motor is installed inside the control box. The drive end of the motor is connected to a third rotating shaft. A first gear is installed on the outside of the third rotating shaft.

[0011] The first gear is externally meshed with a second gear, and the first gear is also externally meshed with a third gear. A first rotating shaft is internally inserted through the third gear. A first bevel gear is mounted on the upper end of the first rotating shaft. A second bevel gear is externally inserted through the first bevel gear. A second rotating shaft is internally inserted through the second bevel gear. A stirring rod is symmetrically arranged externally on the second rotating shaft.

[0012] As a further embodiment of the present invention: the lower end of the first water pipe is connected to a flexible hose inside the control box, the lower end of the flexible hose is connected to the upper end of the second water pipe, and the second gear is disposed outside the second water pipe.

[0013] As a further embodiment of the present invention: the first gear, the second gear and the third gear have the same number of teeth, and the first gear, the second gear and the third gear are all meshed with each other.

[0014] As a further embodiment of the present invention: three sets of water spray pipes are symmetrically arranged below the connecting pipe, and at least ten sets of nozzles are symmetrically arranged on the lower surface of the water spray pipes.

[0015] As a further embodiment of the present invention: the first bevel gear and the second bevel gear mesh with each other, a bearing is provided on the inner side of the water tank, one end of the second rotating shaft is embedded in the bearing and connected, and at least ten stirring rods are symmetrically arranged on the outside of the second rotating shaft.

[0016] As a further embodiment of the present invention: the fixed end of the electric lifting rod is installed on the lower surface of the positioning plate, and the telescopic end of the electric lifting rod is connected to the middle position of the lower surface of the pressure plate.

[0017] As a further embodiment of the present invention: one end of the spring is fixed to the inner side of the connecting plate, and the other end of the spring is fixed to one side of the clamping plate.

[0018] As a further embodiment of the present invention: the pressure plate and the first extrusion plate are arranged in a "U" shape, and the lower surface of the pressure plate and the inner side of the clamping plate are provided with anti-slip textures that match the stripes on the outside of the water tank.

[0019] As a further embodiment of the present invention: one side of the first extrusion plate is inclined, and one side of the second extrusion plate is provided with an inclined surface adapted to the first extrusion plate.

[0020] As a further embodiment of the present invention: an mounting plate is also fixed to the upper surface of the connecting plate, and the mounting plate is installed on the lower surface of the drone body by high-strength bolts.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The present invention uses the operation of the electric lifting rod on the lower surface of the positioning plate to move the pressure plate downward to press the water tank on the placement plate. During the lifting, the first pressing plate presses down on the second pressing plate on one side of the clamping plate, causing the spring to deform. Thus, when the pressure plate moves downward, the clamping plate also moves to one side, thereby clamping the water tank and ensuring its stability. This facilitates subsequent use of drones for coalfield fire fighting and prevents the drone from falling during takeoff, which would affect the fire fighting work.

[0023] 2. This invention uses an internal water pump to extract water for coalfield fire extinguishing, which is then pumped through a first water pipe and a hose into a second water pipe, and finally into a spray pipe via a connecting pipe. The water is then sprayed outwards using nozzles to extinguish the coalfield fire. Simultaneously, the operation of the motor causes the first gear on the outside of the third shaft to rotate. The meshing of the first, second, and third gears allows for fine-tuning of the spray pipe angle. At the same time, the meshing of the first and second bevel gears causes the second shaft to rotate, thereby agitating the inside of the water tank and improving the uniformity of the extinguishing agent mixture. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a coalfield fire extinguishing system based on drone collaborative operations.

[0025] Figure 2 This is a schematic diagram of the clamping plate in a coalfield fire extinguishing system based on drone collaborative operations.

[0026] Figure 3 This is a schematic diagram of the pressure plate structure in a coalfield fire extinguishing system based on drone collaborative operations.

[0027] Figure 4 This is a front view of a clamping plate in a coalfield fire extinguishing system based on drone collaborative operations.

[0028] Figure 5 This is a schematic diagram of the structure of a water spray pipe in a coalfield fire extinguishing system based on UAV collaborative operations.

[0029] Figure 6 This is a schematic diagram of the internal structure of a water tank in a coalfield fire extinguishing system based on UAV collaborative operations.

[0030] Figure 7 This is a schematic diagram of the internal structure of a control box in a coalfield fire extinguishing system based on drone collaborative operations.

[0031] In the diagram: 1. Main body of the drone; 11. Arm; 12. Rotor; 2. Water tank; 21. Water spray pipe; 211. Nozzle; 22. Connecting pipe; 23. Control box; 231. Motor; 232. First gear; 233. Second gear; 234. Third gear; 24. Water pump; 241. First water pipe; 242. Second water pipe; 243. Hose; 25. First shaft; 251. First bevel gear; 26. Second bevel gear; 261. Second shaft; 262. Stirring rod; 3. Connecting plate; 31. Placement plate; 32. Mounting plate; 4. Pressure plate; 41. Clamping plate; 411. Spring; 42. Positioning plate; 43. Electric lifting rod; 44. First extrusion plate; 45. Second extrusion plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-7In this embodiment of the invention, a coalfield fire extinguishing system based on drone collaborative operation includes a drone body 1, an arm 11 installed on the outside of the drone body 1, and a rotor 12 installed on the upper surface of the arm 11. A connecting plate 3 is installed on the lower surface of the drone body 1. A placement plate 31 is fixed to one side of the connecting plate 3, and a positioning plate 42 is installed above the placement plate 31 on one side of the connecting plate 3. An electric lifting rod 43 is installed on the lower surface of the positioning plate 42. A pressure plate 4 is connected to the lower end of the electric lifting rod 43. A pressure plate 4 is installed at both ends of the lower surface of the pressure plate 4. There is a first pressing plate 44, and springs 411 are symmetrically arranged on one side of the connecting plate 3. A clamping plate 41 is provided at one end of the spring 411, and a second pressing plate 45 is installed on one side of the clamping plate 41. This arrangement uses the operation of the electric lifting rod 43 to make the pressing plate 4 move downward. When lifting, the pressing plate 4 presses down on the water tank 2. At the same time, when lifting, the second pressing plate 44 presses down on the first pressing plate 45, which can make the clamping plate 41 move to clamp the two sides of the water tank 2. This can improve the clamping purpose of the water tank 2 and ensure its stability.

[0034] A control box 23 is installed on the lower surface of water tank 2. A second water pipe 242 is installed through the lower surface of the control box 23. The lower end of the second water pipe 242 is connected to a connecting pipe 22. The lower end of the connecting pipe 22 is connected to a spray pipe 21. Spray nozzles 211 are symmetrically arranged on the lower surface of the spray pipe 21. A water pump 24 is installed inside the water tank 2. The outlet end of the water pump 24 is connected to the first water pipe 241. A motor 231 is installed inside the control box 23. The drive end of the motor 231 is connected to a third rotating shaft. The outer surface of the third rotating shaft... The unit is equipped with a first gear 232. This configuration utilizes a motor 231 inside the control box 23 to operate, which causes the third rotating shaft to rotate, thereby rotating the first gear 232. A second gear 233 is externally meshed with the first gear 232. By utilizing the mutual meshing of the first gear 232 and the second gear 233, the rotation of the first gear 232 will drive the second gear 233 to rotate, and finely adjust the angle of the connecting pipe 22 at the lower end of the second water pipe 242. This achieves the purpose of efficiently extinguishing coalfield fires.

[0035] Furthermore, a third gear 234 is meshed with the outside of the first gear 232. A first rotating shaft 25 is penetrated through the inside of the third gear 234. A first bevel gear 251 is installed at the upper end of the first rotating shaft 25. A second bevel gear 26 is disposed outside the first bevel gear 251. A second rotating shaft 261 is penetrated through the inside of the second bevel gear 26. A stirring rod 262 is symmetrically disposed outside the second rotating shaft 261. This arrangement utilizes the meshing between the third gear 234 and the first gear 232. When the first gear 232 rotates, the third gear 234 also rotates, which in turn causes the first rotating shaft 25 to mesh with the first bevel gear 251 and the second bevel gear 26, thereby rotating the second rotating shaft 261. In this way, the stirring rod 262 outside the second rotating shaft 261 can be used to stir the fire extinguishing agent inside.

[0036] exist Figure 7 In the first water pipe 241, the lower end is connected to a flexible hose 243 inside the control box 23. The lower end of the flexible hose 243 is connected to the upper end of the second water pipe 242. The second gear 233 is located outside the second water pipe 242. This arrangement uses the flexible hose 243 to connect the first water pipe 241 and the second water pipe 242. In this way, when the water pump 24 is working, the fire extinguishing agent inside it can be drawn out and enters the connecting pipe 22 through the first water pipe 241, the flexible hose 243 and the second water pipe 242. Finally, it is sprayed out through the nozzle 211 on the lower surface of the spray pipe 21 to achieve the purpose of extinguishing the coalfield fire.

[0037] exist Figure 7 In the first gear 232, the second gear 233, and the third gear 234 have the same number of teeth, and all three gears mesh with each other. This arrangement utilizes the meshing of the first gear 232, the second gear 233, and the third gear 234 so that when the motor 231 is working, the first gear 232 outside the third rotating shaft can rotate. Through meshing, the second gear 233 and the third gear 234 can be driven to rotate, thereby adjusting the angle of the water spray pipe 21 and the stirring rod 262 to stir the inside of the water tank 2.

[0038] exist Figure 5 and Figure 6 In the middle: three sets of water spray pipes 21 are symmetrically arranged below the connecting pipe 22, and at least ten sets of nozzles 211 are symmetrically arranged on the lower surface of the water spray pipes 21. This arrangement uses multiple sets of water spray pipes 21 and multiple sets of nozzles 211 arranged on the lower surface of the water spray pipes 21 to spray out the extinguishing agent, so as to achieve the spraying of the extinguishing agent inside the water tank 2 to extinguish the coalfield fire.

[0039] exist Figure 6 and Figure 7In the middle section: the first bevel gear 251 and the second bevel gear 26 mesh with each other. A bearing is provided on the inner side of the water tank 2. One end of the second rotating shaft 261 is embedded in the bearing and connected. At least ten stirring rods 262 are symmetrically arranged on the outside of the second rotating shaft 261. This arrangement utilizes the meshing of the first bevel gear 251 and the second bevel gear 26 so that when the first rotating shaft 25 rotates, the meshing of the first bevel gear 251 and the second bevel gear 26 can realize the rotation of the second rotating shaft 261, thereby achieving the purpose of stirring the fire extinguishing agent inside the water tank 2.

[0040] exist Figure 4 In the middle: the fixed end of the electric lifting rod 43 is installed on the lower surface of the positioning plate 42, and the telescopic end of the electric lifting rod 43 is connected to the middle position of the lower surface of the pressure plate 4. This setting uses the operation of the electric lifting rod 43 to make the pressure plate 4 rise and fall. In this way, the pressure plate 4 can press the water tank 2 tightly during the rise and fall to ensure its stability.

[0041] exist Figure 3 and Figure 4 In the middle: one end of the spring 411 is fixed to the inner side of the connecting plate 3, and the other end of the spring 411 is fixed to one side of the clamping plate 41. This arrangement utilizes the fact that the spring 411 can deform when the clamping plate 41 moves outward. When the first pressing plate 44 moves away from the second pressing plate 45, the reaction force of the spring 411 can cause the clamping plate 41 to move back to the position of the connecting plate 3 to restore its original position.

[0042] exist Figure 4 In the middle: the pressure plate 4 and the first extrusion plate 44 are arranged in a "U" shape, and the lower surface of the pressure plate 4 and the inner side of the clamping plate 41 are provided with anti-slip textures that match the stripes on the outside of the water tank 2. One side of the first extrusion plate 44 is inclined, and one side of the second extrusion plate 45 is provided with an inclined surface that matches the first extrusion plate 44. When the pressure plate 4 moves downward, the first extrusion plate 44, which is located on the lower surface of the pressure plate 4, will press down on the second extrusion plate 45 to make the clamping plate 41 move outward and cause the spring 411 to deform. When the clamping plate 41 moves outward, it can clamp the water tank 2 to ensure its stability.

[0043] exist Figure 2 and Figure 3 In the middle: The upper surface of the connecting plate 3 is also fixed with a mounting plate 32. The mounting plate 32 is installed on the lower surface of the drone body 1 by high-strength bolts. This setting allows the connecting plate 3 to be installed on the lower surface of the drone body 1 using the mounting plate 32, which facilitates the subsequent installation and use of the water tank 2.

[0044] The working principle of this invention is as follows: When using the coalfield fire extinguishing system based on UAV collaborative operation, the water tank 2 is first placed on the placement plate 31 on one side of the connecting plate 3. After placement, the UAV body 1 is electrically connected to the electric lifting rod 43 through its built-in power supply. This allows the pressure plate 4 to move downward when the electric lifting rod 43 is working. When moving downward, the pressure plate 4 will contact the upper surface of the water tank 2 to press the water tank 2 and ensure its stability. At the same time, when the pressure plate 4 moves downward, the first extrusion plate 44 on the lower surface of the pressure plate 4 presses down on the second extrusion plate 45 on one side of the clamping plate 41, causing the spring 411 to deform. At this time, the clamping plate 41 moves outward to clamp the two sides of the water tank 2, and the anti-slip stripes can improve its stability.

[0045] When the main body of the drone 1 takes off after being clamped to extinguish the fire in the coalfield, the water pump 24 inside the water tank 2 works to extract the extinguishing agent inside. After extraction, the extinguishing agent enters the hose 243 through the first water pipe 241 and enters the connecting pipe 22 through the second water pipe 242. After entering, it is sprayed out through the nozzle 211 on the lower surface of the spray pipe 21 to achieve the purpose of extinguishing the fire.

[0046] When the position of the nozzle 211 needs to be adjusted, the motor 231 inside the control box 23 is started, which causes the first gear 232 outside the third rotating shaft to rotate. Through the meshing of the first gear 232, the second gear 233 and the third gear 234, the rotation of the first gear 232 causes the second water pipe 242 to rotate, thereby adjusting the angle of the nozzle 211 for efficient fire extinguishing in the coalfield.

[0047] Meanwhile, the rotation of the first gear 232 will cause the third gear 234 to rotate and mesh. When meshing, the first shaft 25 will rotate, which will cause the upper end to rotate the second shaft 261 through the first bevel gear 251 and the second bevel gear 26. When it rotates, the stirring rod 262 outside the second shaft 261 can stir the fire extinguishing agent inside, improve the mixing of the fire extinguishing agent, and carry out fire extinguishing treatment efficiently.

[0048] All electrical devices used in this invention are existing and known, and are connected to the built-in main controller and power supply of the UAV. They can all be purchased and used directly on the market. Their structure, circuit and control principle are all existing and known technologies. Therefore, the structure, circuit and control principle of the device will not be described in detail here.

[0049] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A coalfield fire extinguishing system based on unmanned aerial vehicle (UAV) collaborative operations, characterized in that, The device includes a drone body (1), an arm (11) mounted on the outside of the drone body (1), and a rotor (12) mounted on the upper surface of the arm (11). A connecting plate (3) is mounted on the lower surface of the drone body (1). A placement plate (31) is fixed on one side of the connecting plate (3), and a positioning plate (42) is mounted on one side of the connecting plate (3) above the placement plate (31). An electric lifting rod (43) is mounted on the lower surface of the positioning plate (42). A pressure plate (4) is connected to the lower end of the electric lifting rod (43). A first extrusion plate (44) is mounted on both ends of the lower surface of the pressure plate (4). A spring (411) is symmetrically arranged on one side of the connecting plate (3). A clamping plate (41) is arranged at one end of the spring (411). A second extrusion plate (45) is mounted on one side of the clamping plate (41). A control box (23) is installed on the lower surface of the water tank (2). A second water pipe (242) is installed through the lower surface of the control box (23). The lower end of the second water pipe (242) is connected to a connecting pipe (22). The lower end of the connecting pipe (22) is connected to a spray pipe (21). Spray nozzles (211) are symmetrically arranged on the lower surface of the spray pipe (21). A water pump (24) is installed inside the water tank (2). The outlet end of the water pump (24) is connected to a first water pipe (241).

2. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The control box (23) is equipped with a motor (231). The drive end of the motor (231) is connected to a third rotating shaft. A first gear (232) is installed on the outside of the third rotating shaft. A second gear (233) is meshed with the outside of the first gear (232). A third gear (234) is also meshed with the outside of the first gear (232). The first rotating shaft (25) is penetrated through the inside of the third gear (234). A first bevel gear (251) is installed at the upper end of the first rotating shaft (25), a second bevel gear (26) is provided outside the first bevel gear (251), a second rotating shaft (261) is provided through the inside of the second bevel gear (26), and stirring rods (262) are symmetrically arranged outside the second rotating shaft (261).

3. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The lower end of the first water pipe (241) is connected to a flexible hose (243) inside the control box (23), and the lower end of the flexible hose (243) is connected to the upper end of the second water pipe (242). The second gear (233) is located outside the second water pipe (242).

4. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 2, characterized in that, The first gear (232), the second gear (233), and the third gear (234) have the same number of teeth, and the first gear (232), the second gear (233), and the third gear (234) mesh with each other.

5. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 2, characterized in that, The first bevel gear (251) meshes with the second bevel gear (26). A bearing is provided on the inner side of the water tank (2). One end of the second rotating shaft (261) is embedded in the bearing and connected. At least ten stirring rods (262) are symmetrically arranged on the outside of the second rotating shaft (261).

6. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The water spray pipe (21) is symmetrically arranged in three groups below the connecting pipe (22), and the nozzle (211) is symmetrically arranged in at least ten groups on the lower surface of the water spray pipe (21).

7. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The fixed end of the electric lifting rod (43) is installed on the lower surface of the positioning plate (42), and the telescopic end of the electric lifting rod (43) is connected to the middle position of the lower surface of the pressure plate (4). One end of the spring (411) is fixed to the inner side of the connecting plate (3), and the other end of the spring (411) is fixed to one side of the clamping plate (41).

8. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The pressure plate (4) and the first extrusion plate (44) are arranged in a "U" shape, and the lower surface of the pressure plate (4) and the inner side of the clamping plate (41) are provided with anti-slip textures that match the external stripes of the water tank (2).

9. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, One side of the first extrusion plate (44) is inclined, and one side of the second extrusion plate (45) is provided with an inclined surface that is compatible with the first extrusion plate (44).

10. A coalfield fire extinguishing system based on UAV collaborative operation according to claim 1, characterized in that, The upper surface of the connecting plate (3) is also fixed with a mounting plate (32), which is mounted on the lower surface of the drone body (1) by high-strength bolts.

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