Aerial vehicle fire extinguishing bomb launching device

Abstract

The application discloses a fire extinguishing bomb throwing device for a unmanned aerial vehicle, which comprises a pitch adjusting mechanism, a bomb storage and bomb conveying mechanism capable of being adjusted in pitch on the pitch adjusting mechanism, two groups of mounting pipes, a spacing adjusting plate, a conveying structure and a throwing acceleration structure, and the throwing acceleration structure comprises an acceleration connecting frame, an acceleration conveying belt assembly, an acceleration motor and an acceleration transmission assembly. The application has the advantages that the high-pressure gas launching mode is replaced by the throwing acceleration structure, the recoil force is small, the flight stability of the unmanned aerial vehicle during launching of the fire extinguishing bomb is ensured, and the safety hidden danger is reduced. Meanwhile, the spacing between the upper and lower mounting pipes is adjusted by adjusting the position of the lower mounting pipe on the spacing adjusting plate, and the throwing of fire extinguishing bombs with different specifications is realized.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing technology, specifically to a fire extinguishing projectile launching device for unmanned aerial vehicles (UAVs). Background Technology

[0002] Important UHV transmission corridors generally refer to those consisting of no fewer than two UHVDC lines with a voltage level of +800 kV or above, where the minimum gap between the conductors of two adjacent UHVDC lines is no more than 100 meters. These important UHV transmission corridors are often located in mountainous areas with complex geographical environments, dense vegetation, and frequent wildfires.

[0003] Firefighting drones, as a new industrial technology, have been widely applied in various fields of firefighting. In China, many organizations have successfully used drones for fire scene reconnaissance and detection, dropping rescue supplies, and extinguishing fires with fire-fighting equipment, with very significant results. Firefighting drones are characterized by high mobility and flexibility, enabling them to reach fire scenes along important ultra-high voltage transmission lines in a timely manner. When fighting fires at heights, the use of firefighting drones can reduce the need for firefighters to work at heights, thus avoiding safety accidents. Currently, the method of vertically dropping fire extinguishing bombs requires the drone to fly directly above the fire, which is not suitable for fires located under high-voltage lines or at the base of trees. For fires directly below high-voltage lines or at the base of trees, a projectile method of dropping fire extinguishing bombs is necessary.

[0004] Besides vertical delivery, a similar linear ballistic launch method is also commonly used. For example, Chinese invention patent document CN110254715A proposes a high-pressure gas launch method. However, the high-pressure gas launch method is prone to generating large recoil and poor flight stability of the UAV, resulting in significant safety hazards. Furthermore, the patent uses a launch tube for launch, which cannot achieve the projection of fire extinguishing projectiles of different specifications. Summary of the Invention

[0005] The technical problem to be solved by this invention is how to ensure the flight stability of the fire extinguishing projectiles launched by the UAV and how to launch fire extinguishing projectiles of different specifications.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A fire extinguishing projectile launching device for unmanned aerial vehicles includes a pitch adjustment mechanism and a projectile storage and feeding mechanism that can be pitched and adjusted on the pitch adjustment mechanism;

[0008] The ammunition storage and feeding mechanism includes two sets of mounting tubes, a spacing adjustment plate, a conveying structure, and a projectile acceleration structure. The two sets of mounting tubes are arranged parallel to each other, and each set of mounting tubes has two mounting tubes. The upper set of mounting tubes is connected to the pitch adjustment mechanism. One end of the spacing adjustment plate is fixed to the upper set of mounting tubes, and the other end is detachably connected to the lower set of mounting tubes. The fixed end of the conveying structure is fixed to the lower mounting tube, and the conveying end of the conveying structure is located between the two lower mounting tubes.

[0009] The projectile acceleration structure includes an acceleration connecting frame, an acceleration conveyor belt assembly, an acceleration motor, and an acceleration transmission assembly. Two sets of acceleration connecting frames are respectively fixed on the upper and lower sets of mounting pipes. Each set of acceleration connecting frames is equipped with an acceleration conveyor belt assembly. The fixed end of the acceleration motor is fixed on the acceleration connecting frame. The output end of the acceleration motor is connected to the upper and lower sets of acceleration conveyor belt assemblies through the acceleration transmission assembly. The acceleration transmission assembly drives the upper and lower sets of acceleration conveyor belt assemblies to move in the same direction.

[0010] This invention replaces the high-pressure gas launch method with a projectile acceleration structure, resulting in less recoil, ensuring flight stability during the launch of UAV fire extinguishing projectiles, and reducing safety hazards. At the same time, by adjusting the position of the lower mounting tube on the spacing adjustment plate, the spacing between the upper and lower mounting tubes can be adjusted, enabling the projectile launch of fire extinguishing projectiles of different specifications.

[0011] Preferably, the acceleration conveyor belt assembly includes an acceleration drive wheel, an acceleration driven wheel, and an acceleration conveyor belt. The acceleration drive wheel and the acceleration driven wheel are disposed at both ends of the acceleration connecting frame. The acceleration conveyor belt is wound around the acceleration drive wheel and the acceleration driven wheel. The acceleration drive wheel is connected to the acceleration transmission assembly.

[0012] Preferably, the acceleration conveyor belt assembly further includes an acceleration support bearing, which is rotatably mounted on the acceleration connecting frame and rolls in cooperation with the inner side of the acceleration conveyor belt.

[0013] Preferably, the acceleration transmission assembly includes a driving pulley, a driven pulley, a tensioner, and a transmission belt. The output end of the acceleration motor is connected to the driving pulley. Both the upper and lower acceleration connecting frames are equipped with driven pulleys connected to the acceleration transmission belt assembly. The tensioner is movably mounted on one of the acceleration connecting frames. The transmission belt is wound around the driving pulley, the two sets of driven pulleys, and the tensioner, causing the two sets of driven pulleys to rotate in opposite directions.

[0014] Preferably, the conveying structure includes a conveying motor, a conveying drive wheel, a conveying driven wheel, and a conveyor belt. The fixed end of the conveying motor is fixed on the mounting tube below. The conveying drive wheel and the conveying driven wheel are both disposed between the mounting tubes below. The conveyor belt is wound around the conveying drive wheel and the conveying driven wheel.

[0015] Preferably, the conveying structure further includes a conveying support bearing, which is rotatably mounted on the lower mounting tube and rolls in cooperation with the inner side of the conveyor belt.

[0016] Preferably, the conveyor belt is provided with equally spaced stops.

[0017] Preferably, the spacing adjustment plate is provided with multiple sets of mounting holes vertically, and the mounting tube below is connected to the mounting holes on the spacing adjustment plate by bolts.

[0018] Preferably, the pitch adjustment mechanism includes a fixed base, a pitch motor, a pitch transmission assembly, a support plate, an upper pressure plate, and a support base. The pitch adjustment mechanism has an internally hollow frame structure. The fixed base is used to fix it to the UAV. The fixed end of the pitch motor is fixed to the fixed base. The output end of the pitch motor is connected to the support plate through the pitch transmission assembly, so that the support plate can rotate. One end of the support plate is fixed to the upper pressure plate, and the other end is detachably connected to the support base. The upper mounting tube is fixed to the upper pressure plate, and the lower mounting tube is fixed to the support base.

[0019] Preferably, the rotating end of the support plate is further provided with an angle encoder.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] This invention replaces the high-pressure gas launch method with a projectile acceleration structure, resulting in less recoil, ensuring flight stability during the launch of UAV fire extinguishing projectiles, and reducing safety hazards. At the same time, by adjusting the position of the lower mounting tube on the spacing adjustment plate, the spacing between the upper and lower mounting tubes can be adjusted, enabling the projectile launch of fire extinguishing projectiles of different specifications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the installation structure according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the pitch adjustment mechanism according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the ammunition storage and feeding mechanism according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure after the fire extinguishing bomb is filled according to an embodiment of the present invention. Detailed Implementation

[0027] To facilitate understanding of the technical solution of the present invention by those skilled in the art, the technical solution of the present invention will now be further described in conjunction with the accompanying drawings.

[0028] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0029] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0030] See Figure 1 and Figure 2 This embodiment discloses a fire extinguishing projectile launching device for drones, including a pitch adjustment mechanism 1 and a projectile storage and feeding mechanism 2 that can be pitched and adjusted on the pitch adjustment mechanism 1. The pitch adjustment mechanism 1 can be fixed on the drone 3.

[0031] See Figure 3 The pitch adjustment mechanism 1 includes a fixed base 11, a pitch motor 12, a pitch transmission assembly 13, a support plate 14, an upper pressure plate 15, a support base 16, and an angle encoder 17. The pitch adjustment mechanism 1 has a hollow frame structure. The fixed base 11 is used to fix it to the UAV 3. The fixed end of the pitch motor 12 is fixed to the fixed base 11. The output end of the pitch motor 11 is connected to the support plate 14 through the pitch transmission assembly 13, and the pitch transmission assembly 13 drives the support plate 14 to rotate within the pitch adjustment mechanism 1. One end of the support plate 14 is fixed to the upper pressure plate 15, and the other end is detachably connected to the support base 16, so that the position of the support base 16 on the support plate 14 can be adjusted, thereby realizing the adjustment of the distance between the upper pressure plate 15 and the support base 16. The rotating end of the support plate 14 is also equipped with an angle encoder 17, which can observe the pitch angle of the pitch adjustment mechanism 1 at all times. The ammunition storage and feeding mechanism 2 is set on the upper pressure plate 15 and the support base 16.

[0032] Furthermore, the pitch motor 12 is a stepper motor, and the pitch transmission assembly 13 is a synchronous belt drive assembly. Power is transmitted through the synchronous belt, which has lower installation accuracy and cost compared to gear transmission, and the structure is more compact and stable.

[0033] See Figure 4 The ammunition storage and feeding mechanism 2 includes two sets of mounting tubes 21, a spacing adjustment plate 22, a conveying structure 23, and a projectile acceleration structure 24. The two sets of mounting tubes 21 are arranged parallel to each other vertically, with two mounting tubes in each set. The upper mounting tube 21 is fixed to the upper cover plate 15, and the lower mounting tube 21 is fixed to the support base 16. The fire extinguishing projectile is placed between the four mounting tubes 21, so that the four mounting tubes 21 form a firing barrel that is tangential to the fire extinguishing projectile. One end of the spacing adjustment plate 22 is fixed to the upper set of mounting tubes 21. 1. The other end is detachably connected to a set of mounting tubes 21 below. Specifically, the spacing adjustment plate 22 is vertically provided with multiple sets of mounting holes. The mounting tubes 21 below are connected to the vertically provided mounting holes on the spacing adjustment plate 22 by bolts. By changing the connection between the mounting tubes 21 below and the mounting holes at different positions on the spacing adjustment plate 22, the position of the mounting tubes 21 below can be changed, thereby adjusting the spacing between the upper and lower sets of mounting tubes 21. This allows the system to adapt to the launching of fire extinguishing bombs of different diameters while effectively reducing weight.

[0034] The conveying structure 23 includes a conveying motor 231, a conveying drive wheel 232, a conveying driven wheel 233, a conveying belt 234, a conveying support bearing (not shown in the figure), and stop blocks 235. The fixed end of the conveying motor 231 is fixed on the lower mounting tube 21. The conveying drive wheel 232 and the conveying driven wheel 233 are both arranged between the two lower mounting tubes 21. The conveying belt 234 is wound around the conveying drive wheel 232 and the conveying driven wheel 233. The conveying support bearing is rotatably arranged on the lower mounting tube 21 and rolls with the inner side of the conveying belt 234 to support the conveying belt 234 and prevent the conveying effect from being affected by the excessive conveying distance of the conveying belt 234. Multiple sets of stop blocks 235 are arranged at intervals on the conveying belt 234. The distance between two adjacent sets of stop blocks 235 is slightly larger than the length of a fire extinguishing bomb, so that only one fire extinguishing bomb can be stored between two adjacent sets of stop blocks 235.

[0035] The projectile acceleration structure 24 includes an acceleration connecting frame 241, an acceleration conveyor belt assembly 242, an acceleration motor 243, and an acceleration transmission assembly 244. The two sets of acceleration connecting frames 241 are hollow frame structures and are respectively fixed between the upper and lower sets of mounting pipes 21. Each set of acceleration connecting frames 241 is provided with an acceleration conveyor belt assembly 242. The fixed end of the acceleration motor 243 is fixed on the acceleration connecting frame 241, and the output end of the acceleration motor 243 is connected to the upper and lower sets of acceleration conveyor belt assemblies 242 through the acceleration transmission assembly 244.

[0036] Specifically, the acceleration conveyor belt assembly 242 includes an acceleration drive wheel 2421, an acceleration driven wheel 2422, an acceleration conveyor belt 2423, and an acceleration support bearing (not shown in the figure). The acceleration drive wheel 2421 and the acceleration driven wheel 2422 are located at both ends of the acceleration connecting frame 241. The acceleration conveyor belt 2423 is wound around the acceleration drive wheel 2421 and the acceleration driven wheel 2422. The acceleration drive wheel 2421 is connected to the acceleration transmission assembly 242, which drives the acceleration drive wheel 2421 to rotate, thereby driving the acceleration conveyor belt 2423 to rotate around the acceleration drive wheel 2421 and the acceleration driven wheel 2422. The acceleration support bearing is rotatably mounted on the acceleration connecting frame 241 and rolls with the inner side of the acceleration conveyor belt 2423 to support the acceleration conveyor belt 2423 and prevent the fire extinguishing bomb from losing its supporting force and failing to accelerate when it reaches the middle position of the acceleration conveyor belt 2423.

[0037] The acceleration transmission assembly 244 includes a driving pulley 2441, a driven pulley 2442, a tensioner 2443, and a transmission belt 2444. The output end of the acceleration motor 243 is connected to the driving pulley 2441. Both the upper and lower sets of acceleration connecting frames 241 are equipped with driven pulleys 2442 connected to the acceleration driving pulley 2421. The rotation of the driven pulleys 2442 drives the rotation of the acceleration driving pulley 2421. The tensioner 2443 is movably mounted on one of the acceleration connecting frames 241. The transmission belt 2444 is wound around the driving pulley 2441, the two sets of driven pulleys 2442, and the tensioner 2443, causing the two sets of driven pulleys 2442 to rotate in opposite directions, thereby driving the upper and lower sets of acceleration driving pulleys 2421 to rotate in opposite directions, and thus causing the upper and lower sets of acceleration conveyor belts 2423 to accelerate in the same direction.

[0038] Furthermore, in this embodiment, the tensioning wheel 2443 is disposed on the upper acceleration connecting frame 241. Specifically, a tensioning plate is fixed on the acceleration connecting frame 241. Both the acceleration connecting frame 241 and the tensioning plate are provided with waist-shaped holes. The two ends of the tensioning wheel 2443 are respectively disposed on the waist-shaped holes on the acceleration connecting frame 241 and the tensioning plate. By changing the different positions of the tensioning wheel 2443 on the waist-shaped holes, the tension of the transmission belt 2444 is achieved.

[0039] The working principle of this embodiment is as follows:

[0040] Ammunition storage process: Based on the size requirements of the fire extinguishing ammunition, adjust the position of the lower mounting tube 21 on the spacing adjustment plate 22 to adjust the spacing between the upper and lower sets of mounting tubes 21, so that the ammunition storage and conveying mechanism 2 can store the fire extinguishing ammunition of the required size; then drive the conveyor motor 231 to rotate the stop block 235 above the conveyor belt 234 to a position large enough to hold one fire extinguishing ammunition. The fire extinguishing ammunition is inserted horizontally from the front, passes through the front projectile acceleration structure 24 and is sent to the conveyor belt 234. Control the rotation of the conveyor motor 231 to feed the fire extinguishing ammunition into the conveyor belt. This process is repeated to complete the loading of other fire extinguishing ammunition. Figure 5 As shown.

[0041] The feeding process is as follows: First, according to the projection requirements, the pitch motor 12 is activated, which drives the support plate 14 to rotate via the pitch transmission assembly 13. This, in turn, drives the upper pressure plate 15 and the support base 16 to rotate, which in turn drives the installation pipe 21 connected to the upper pressure plate 15 and the support base 16 to rotate. Ultimately, this achieves the adjustment of the angle of the projection acceleration structure 24, ensuring that the fire extinguishing projectiles projected from the projection acceleration structure 24 meet the fire extinguishing projection requirements. Then, the acceleration motor 243 is turned on, which drives the two sets of acceleration drive wheels 2421 to rotate in opposite directions via the acceleration transmission assembly 242, thereby enabling the upper pressure plate 15 and the support base 16 to rotate. The next two sets of accelerating conveyor belts 2423 accelerate in the same direction, and then control the transmission motor 231 to drive the transmission belt 234 to rotate. Under the action of the stop block 235 above the synchronous belt 234, the fire extinguishing bullet is pushed forward. The front of the fire extinguishing bullet first contacts the two sets of accelerating conveyor belts 2423. Under the action of the two sets of accelerating conveyor belts 2423, the fire extinguishing bullet is accelerated and launched, completing the projectile launch of the fire extinguishing bullet. The accelerating motor 243 and the transmission motor 231 stop operating. It should be noted that if multiple fire extinguishing bullets are launched at one time, the accelerating motor 243 and the transmission motor 231 do not stop operating.

[0042] This invention replaces the high-pressure gas launch method with a projectile acceleration structure 24, resulting in less recoil, ensuring flight stability during the launch of UAV fire extinguishing projectiles, and reducing safety hazards. At the same time, by adjusting the position of the lower mounting tube 21 on the spacing adjustment plate 22, the spacing between the upper and lower mounting tubes 21 can be adjusted, enabling the projectile launch of fire extinguishing projectiles of different specifications.

[0043] 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 illustrative and non-limiting in all respects, 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, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] The above-described embodiments are merely examples of implementation methods of the invention. The scope of protection of the present invention is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A fire extinguishing bomb launching device for a drone, characterized by: Includes a pitch adjustment mechanism and a magazine storage and feeding mechanism capable of pitch adjustment on the pitch adjustment mechanism; The ammunition storage and feeding mechanism includes two sets of mounting tubes, a spacing adjustment plate, a conveying structure, and a projectile acceleration structure. The two sets of mounting tubes are arranged parallel to each other, and each set of mounting tubes has two mounting tubes. The upper set of mounting tubes is connected to the pitch adjustment mechanism. One end of the spacing adjustment plate is fixed to the upper set of mounting tubes, and the other end is detachably connected to the lower set of mounting tubes. The fixed end of the conveying structure is fixed to the lower mounting tube, and the conveying end of the conveying structure is located between the two lower mounting tubes. The projectile acceleration structure includes an acceleration connecting frame, an acceleration conveyor belt assembly, an acceleration motor, and an acceleration transmission assembly. Two sets of acceleration connecting frames are respectively fixed on the upper and lower sets of mounting pipes. Each set of acceleration connecting frames is equipped with an acceleration conveyor belt assembly. The fixed end of the acceleration motor is fixed on the acceleration connecting frame. The output end of the acceleration motor is connected to the upper and lower sets of acceleration conveyor belt assemblies through the acceleration transmission assembly. The acceleration transmission assembly drives the upper and lower sets of acceleration conveyor belt assemblies to move in the same direction. The acceleration transmission assembly includes a driving pulley, a driven pulley, a tensioner, and a transmission belt. The output end of the acceleration motor is connected to the driving pulley. Both the upper and lower acceleration connecting frames are equipped with driven pulleys connected to the acceleration transmission belt assembly. The tensioner is movably mounted on one of the acceleration connecting frames. The transmission belt is wound around the driving pulley, the two sets of driven pulleys, and the tensioner, causing the two sets of driven pulleys to rotate in opposite directions. The conveying structure includes a conveying motor, a conveying drive wheel, a conveying driven wheel, and a conveyor belt. The fixed end of the conveying motor is fixed on the mounting tube below. The conveying drive wheel and the conveying driven wheel are both arranged between the mounting tubes below. The conveyor belt is wound around the conveying drive wheel and the conveying driven wheel. The spacing adjustment plate has multiple sets of vertical mounting holes, and the mounting tube below is connected to the mounting holes on the spacing adjustment plate by bolts. The fire extinguishing projectile is positioned between four mounting tubes, so that the four mounting tubes form a firing barrel that is tangential to the fire extinguishing projectile.

2. The unmanned aerial vehicle fire extinguishing bomb projection device according to claim 1, characterized in that: The acceleration conveyor belt assembly includes an acceleration drive wheel, an acceleration driven wheel, and an acceleration conveyor belt. The acceleration drive wheel and the acceleration driven wheel are located at both ends of the acceleration connecting frame. The acceleration conveyor belt is wound around the acceleration drive wheel and the acceleration driven wheel. The acceleration drive wheel is connected to the acceleration transmission assembly.

3. The unmanned aerial vehicle fire extinguishing bomb projection device according to claim 2, characterized in that: The acceleration conveyor belt assembly also includes an acceleration support bearing, which is rotatably mounted on the acceleration connecting frame and rolls in cooperation with the inner side of the acceleration conveyor belt.

4. The unmanned aerial vehicle fire extinguishing bomb projection device according to claim 1, characterized in that: The conveying structure also includes a conveying support bearing, which is rotatably mounted on the mounting tube below and rolls in cooperation with the inner side of the conveyor belt.

5. The unmanned aerial vehicle fire extinguishing bomb projection device according to claim 1, characterized in that: The conveyor belt is equipped with equally spaced stops.

6. The unmanned aerial vehicle fire extinguishing bomb projection device according to claim 1, characterized in that: The pitch adjusting mechanism comprises a fixed seat, a pitch motor, a pitch transmission assembly, a support plate, an upper pressing cover plate and a support seat, and the pitch adjusting mechanism is in a frame structure with an inner cavity.

7. The fire extinguishing projectile launching device for unmanned aerial vehicles according to claim 6, characterized in that: The rotating end of the support plate is also provided with an angle encoder.

Images