CN110271669B - Fire control disaster relief unmanned aerial vehicle - Google Patents

Abstract

The invention belongs to the technical field of unmanned aircrafts, and particularly relates to a fire-fighting and disaster-relief unmanned aerial vehicle, which comprises a main body, a fixing frame and a bullet throwing device, wherein the fixing frame is arranged at the lower end of the main body, the bullet throwing device comprises a transverse pull rod and two bullet throwing mechanisms for throwing fire extinguishing bullets, the transverse pull rod is arranged on the fixing frame and penetrates between the main body and the fixing frame, and the two bullet throwing mechanisms are respectively arranged at two ends of the transverse pull rod. Therefore, the two bullet throwing mechanisms can be stably installed relative to the main body through the two ends of the transverse pull rod. So, when the condition of a fire appears at the top of high-rise building, install unmanned aerial vehicle that throws bullet mechanism can fly to the top of high-rise building, utilize the mechanism of throwing to release the fire extinguishing bomb, carry out fire extinguishing operation, because unmanned aerial vehicle can fly to the top of high-rise building comparatively fast, just so showing and having practiced thrift the condition of a fire and having dealt with time, effectively promoted the fire extinguishing efficiency when the condition of a fire appears at the high-rise building top.

Description

Fire control disaster relief unmanned aerial vehicle

Technical Field

The invention belongs to the technical field of unmanned aerial vehicles, and particularly relates to a fire-fighting and disaster-relief unmanned aerial vehicle.

Background

In recent years, with the gradual acceleration of the urban process, the number of urban high-rise buildings is also continuously rising. Fire protection problems for high-rise buildings are also becoming a growing concern. At present, fire protection of high-rise buildings mainly depends on an in-building spray fire protection system and a fire hydrant system.

However, when a fire occurs in a high-rise building or a high-rise floor, due to factors such as water pressure and floor height, it is often difficult for the fire fighting power to reach the place where the fire occurs in time. Rescue workers often take a long time to perform fire extinguishing operations, resulting in lower fire extinguishing efficiency.

Disclosure of Invention

The invention aims to provide a fire-fighting unmanned aerial vehicle, which aims to solve the technical problem that the fire extinguishing efficiency is lower when a fire occurs in a high-rise building or a high-rise building in the prior art.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a fire control relief of disaster unmanned aerial vehicle, includes main body, mount and bullet device, the mount set up in the lower extreme of main body, bullet device includes horizontal pull rod and two bullet mechanisms that are used for putting in fire extinguishing bomb, horizontal pull rod set up in on the mount and wear to locate main body with between the mount, two bullet mechanisms set up respectively in the both ends of horizontal pull rod.

Further, fixed claws are arranged at two ends of the transverse pull rod, lifting handle pieces are arranged at the upper ends of the two throwing mechanisms, and the fixed claws are connected with the corresponding lifting handle pieces through latch pieces.

Further, at least one claw piece is arranged on one side, facing the fixing frame, of the spring throwing mechanism, and each claw piece is arranged at the lower end of the fixing frame.

Further, the bullet mechanism includes the apron piece, is used for the holding bullet storage section of thick bamboo, mount pad and the stop gear of fire extinguishing bullet, the apron piece set up in the upper end of bullet storage section of thick bamboo, just the apron piece corresponds the bullet loading mouth has been seted up to the position of bullet storage section of thick bamboo, the handle piece set up in on the apron piece, each the claw piece all set up in on the mount pad, the mount pad set up in the lower extreme of bullet storage section of thick bamboo, just the mount pad corresponds the bullet loading mouth has been seted up to the position of bullet storage section of thick bamboo, stop gear set up in the mount pad and be used for will when the bullet mechanism is in the bullet storage state fire extinguishing bullet is located in the bullet storage section of thick bamboo, just the bullet mechanism is used for when the bullet mechanism is in the bullet state of throwing releases the stop of fire extinguishing bullet.

Further, the projectile mechanism further comprises a plurality of fixing rods, and each fixing rod is connected between the cover plate piece and the mounting seat.

Further, the stop gear includes actuating mechanism, moving coil ring spare and a plurality of poking rods, each poking rod is all installed through the rotation of rotation round pin in the periphery edge of throwing the bullet mouth, moving coil ring spare ring is located the periphery edge of throwing the bullet mouth and can rotate for throwing the bullet mouth, each poking rod all with moving coil ring spare rotates to be connected, actuating mechanism with arbitrary poking rod is connected and can drive should poking rod rotates for corresponding rotation round pin, should poking rod is used for driving under actuating mechanism's drive through moving coil ring spare the balance poking rod rotates to the inside of throwing the bullet mouth or the outside of throwing the bullet mouth.

Further, the poking rod comprises a first bending rod section and a second bending rod section, and the connecting parts of the first bending rod section and the second bending rod section are rotatably installed at the peripheral edge of the projectile throwing opening through corresponding rotating pins.

Further, one end of the first bending rod section is rotationally connected to the moving ring piece, one end of the second bending rod section deviating from the connecting portion forms a limiting end for being abutted to the fire extinguishing bomb, and the length of the first bending rod section is smaller than that of the second bending rod section.

Further, the limiting mechanism further comprises a fixed ring piece, the fixed ring piece is arranged on the peripheral edge of the bullet throwing opening in a surrounding mode and located in the moving ring piece, and each toggle rod is rotatably installed on the fixed ring piece through the rotating pin.

Further, the driving mechanism comprises a driving steering engine and a connecting rod, the driving steering engine is arranged in the mounting seat, the driving end of the driving steering engine is fixedly connected with one end of the connecting rod, and the other end of the connecting rod is connected with any toggle rod;

or the connecting rod is rotatably arranged in the mounting seat, the driving end of the driving steering engine is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is connected with any toggle rod.

The invention has the beneficial effects that: according to the fire-fighting and disaster-relief unmanned aerial vehicle, the fixing frame is arranged below the host, and the transverse pull rod of the bullet throwing device penetrates through the fixing frame and the host body, so that the fixing platform of the two bullet throwing mechanisms is erected, and the two bullet throwing mechanisms can be stably installed relative to the host body through the two ends of the transverse pull rod. So, when the condition of a fire appears at the top of high-rise building, install unmanned aerial vehicle that throws bullet mechanism can fly to the top of high-rise building, utilize the mechanism of throwing to release the fire extinguishing bomb, carry out fire extinguishing operation, because unmanned aerial vehicle can fly to the top of high-rise building comparatively fast, just so showing and having practiced thrift the condition of a fire and having dealt with time, effectively promoted the fire extinguishing efficiency when the condition of a fire appears at the high-rise building top.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a fire-fighting unmanned aerial vehicle according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is an explosion structure schematic diagram of a fire-fighting unmanned aerial vehicle according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a projectile mechanism of a fire-fighting unmanned aerial vehicle according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an explosion structure of a projectile mechanism of a fire-fighting unmanned aerial vehicle according to an embodiment of the present invention;

fig. 6 is a schematic view of a part of a structure of a mounting seat of a projectile mechanism according to an embodiment of the present invention.

Wherein, each reference sign in the figure:

10-main body 20-fixing frame 21-supporting rod

30-projectile device 31-transverse pull rod 32-projectile mechanism

33-fixed rod 34-driving mechanism 35-moving coil ring

36-toggle rod 37-fixed ring piece 311-fixed claw

312-plug 321-handle 322-bullet throwing port

323-claw member 324-cover plate member 325-cartridge

326-mounting base 327-limiting mechanism 328-loading opening

341-drive steering gear 342-connecting rod 361-first bending rod section

362-second bending bar section.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 6 are exemplary and intended to illustrate the present invention and should not be construed as limiting the invention.

In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in fig. 1 to 3, the embodiment of the invention provides a fire-fighting unmanned aerial vehicle, which comprises a main body 10, a fixing frame 20 and a bullet throwing device 30. The fixing frame 20 is disposed at the lower end of the main body 10, specifically, the fixing frame 20 is detachably disposed at the lower end of the main body 10, and the fixing frame 20 is preferably disposed at the lower end of the main body 10 through an aviation latch member 312 in a latch connection manner, so that the main body 10 and the fixing frame 20 can be conveniently assembled, disassembled and assembled quickly.

Further, the bullet throwing device 30 includes a transverse pull rod 31 and two bullet throwing mechanisms 32 for throwing fire extinguishing bullet, the transverse pull rod 31 is disposed on the fixing frame 20 and is penetrated between the main body 10 and the fixing frame 20, and the two bullet throwing mechanisms 32 are respectively disposed at two ends of the transverse pull rod 31. Preferably, the two projectile devices 32 are symmetrically disposed at both ends of the transverse tension rod 31 with respect to the main body 10, so that the overall balance of the fire-fighting unmanned aerial vehicle can be ensured. The stability of the flight attitude of the fire-fighting unmanned aerial vehicle is maintained.

The fire-fighting unmanned aerial vehicle provided by the embodiment of the invention is further described below: according to the fire-fighting unmanned aerial vehicle provided by the embodiment of the invention, the fixing frame 20 is arranged below the host, and the transverse pull rod 31 of the bullet throwing device 30 is penetrated between the fixing frame 20 and the host body 10, so that the fixing platforms of the two bullet throwing mechanisms 32 are erected, and the two bullet throwing mechanisms 32 can be stably installed relative to the host body 10 by being arranged at the two ends of the transverse pull rod 31. So, when the condition of a fire appears at the top of high-rise building, install the unmanned aerial vehicle of bullet mechanism 32 and can fly to the top of high-rise building, utilize bullet mechanism 32 to release the fire extinguishing bomb, develop fire extinguishing operation, because unmanned aerial vehicle can fly to the top of high-rise building comparatively fast, just so showing and having practiced thrift the condition of a fire and having dealt with time, effectively promoted the fire extinguishing efficiency when the condition of a fire appears at the high-rise building top.

In another embodiment of the present invention, as shown in fig. 1 to 3, both ends of the transverse pull rod 31 are provided with fixing claws 311, and the upper ends of the two spring throwing mechanisms 32 are provided with handle members 321, and the fixing claws 311 are connected with the corresponding handle members 321 through latch members 312. Specifically, by connecting the fixing claws 311 with the handle piece 321 through the latch pieces 312, the block quick-attachment/detachment performance of the slinging mechanism 32 with respect to the lateral tension rod 31 is significantly improved. Preferably, the plug pin member 312 is a quick insert-and-pull safety pin, and since the quick insert-and-pull safety pin is inserted into the preset position only by pressing the button, the button is released to ensure the insert-and-pull safety pin to be inserted stably, so that the block quick assembly and disassembly performance of the bullet-throwing mechanism 32 relative to the transverse pull rod 31 is further improved. Further, the fixing claw 311 is gripped on a side vertical rod of the handle member 321, and the latch member 312 is inserted through the fixing claw 311 and the side vertical rod of the handle member 321, so as to connect the fixing claw 311 and the handle member 321, which is simple and fast.

In another embodiment of the present invention, as shown in fig. 4, at least one claw member 323 is disposed on a side of the throwing mechanism 32 facing the fixed frame 20, and each claw member 323 is disposed at a lower end of the fixed frame 20. Specifically, the lower end of the fixing frame 20 is provided with a supporting rod 21, and each of the gripping members is erected on the supporting rod 21. Through setting up and taking claw 323 for take and grab the piece and set up in the lower extreme of mount 20, take like this and grab the piece and can cooperate fixed jaw 311 to realize the spacing of the six degrees of freedom directions of projection mechanism 32 for mount 20, make projection mechanism 32 can install on unmanned aerial vehicle more firmly. The catching member is only arranged at the lower end of the fixed frame 20, and the bullet throwing mechanism 32 firstly is arranged at the lower end of the fixed frame 20 when fixed, and then the fixing claw 311 is connected with the handle member 321 through the latch member 312, so that the bullet throwing mechanism 32 is easily and reliably arranged on the transverse pull rod 31 and the fixed frame 20.

In another embodiment of the present invention, as shown in fig. 4 to 6, the bullet throwing mechanism 32 includes a cover member 324, a bullet storage barrel 325 for accommodating the fire extinguishing bullet, a mounting seat 326 and a limiting mechanism 327, the cover member 324 is disposed at the upper end of the bullet storage barrel 325, a loading opening 328 is disposed at a position of the cover member 324 corresponding to the bullet storage barrel 325, a handle member 321 is disposed on the cover member 324, the mounting seat 326 is disposed at the lower end of the bullet storage barrel 325, a bullet throwing opening 322 is disposed at a position of the mounting seat 326 corresponding to the bullet storage barrel 325, the limiting mechanism 327 is disposed in the mounting seat 326 and is used for limiting the fire extinguishing bullet in the bullet storage barrel 325 when the bullet throwing mechanism 32 is in a bullet storage state, and the bullet throwing mechanism 32 is used for releasing the limitation of the fire extinguishing bullet when the bullet throwing mechanism 32 is in a bullet throwing state. Specifically, the number of the bullet storage barrels 325 and the limiting mechanism 327 is not unique, that is, a plurality of bullet storage barrels 325 may be installed on the installation seat 326, and a plurality of bullet throwing openings 322 may be correspondingly formed on the installation seat 326.

In the bullet throwing mechanism 32 provided by the embodiment of the invention, the bullet storage cylinder 325 is arranged on the mounting seat 326, and meanwhile, the limit mechanism 327 is arranged in the mounting seat 326, so that when the bullet throwing mechanism 32 does not need bullet throwing operation, each fire extinguishing bullet in the bullet storage cylinder 325 can be limited in the bullet storage cylinder 325 by the limit mechanism 327. When the bullet throwing mechanism 32 needs to perform bullet throwing and fire extinguishing operation, the limit mechanism 327 only needs to release the limit of the fire extinguishing bullet in the bullet storage barrel 325, so that each fire extinguishing bullet is thrown from the bullet throwing port 322 in sequence, and the efficient bullet throwing operation of the bullet throwing mechanism 32 is realized. Because the storage cylinder 325 can hold more fire extinguishing bombs at one time, the storage quantity of the fire extinguishing bombs is obviously improved, the continuous projectile throwing capability of the projectile throwing mechanism 32 is further improved, and the fire extinguishing capability of the projectile throwing mechanism 32 is obviously improved.

In another embodiment of the present invention, as shown in fig. 4, the projectile apparatus 32 further includes a plurality of securing rods 33, each securing rod 33 being connected between the cover member 324 and the mounting seat 326. Specifically, by providing a plurality of securing rods 33, each securing rod 33 may connect the deck member 324 with the mounting seat 326, thereby significantly improving the overall strength of the projectile mechanism 32.

In another embodiment of the present invention, as shown in fig. 5, each of the fixing rods 33 is looped around the outer circumference of the cartridge 325. Specifically, by enabling each fixing rod 33 to be disposed around the periphery of each bullet storage barrel 325, each fixing rod 33, together with the cover plate 324 and the mounting seat 326, forms a cage structure, on the one hand, the overall strength of the bullet throwing mechanism 32 is further improved, and on the other hand, the bullet storage barrels 325 are effectively protected, so that the fire extinguishing bullet contained in the bullet storage barrels 325 is safer.

In another embodiment of the present invention, as shown in fig. 6, the limiting mechanism 327 includes a driving mechanism 34, a moving ring member 35 and a plurality of toggle rods 36, each toggle rod 36 is rotatably mounted on the peripheral edge of the bullet hole 322 through a rotation pin, the moving ring member 35 is annularly disposed on the peripheral edge of the bullet hole 322 and can rotate relative to the bullet hole 322, each toggle rod 36 is rotatably connected with the moving ring member 35, the driving mechanism 34 is connected with any toggle rod 36 and can drive the toggle rod 36 to rotate relative to the corresponding rotation pin, and the toggle rod 36 is used for driving the rest of toggle rods 36 to rotate to the inside of the bullet hole 322 or the outside of the bullet hole 322 through the moving ring member 35 under the driving of the driving mechanism 34. Specifically, when the limiting mechanism 327 works, the driving mechanism 34 may be connected with any one of the toggle rods 36 and drives the toggle rod 36 to rotate relative to the corresponding rotation pin, because the toggle rod 36 is rotationally connected with the peripheral edge of the bullet throwing port 322 and the moving coil ring 35, the moving coil ring 35 can rotate relative to the bullet throwing port 322, the toggle rod 36 can drive the moving coil ring 35 to rotate in the rotating process, the moving coil ring 35 can drive other toggle rods 36 to rotate in the rotating process, and finally the integral linkage of all toggle rods 36 is realized, so that the driving mechanism 34 can drive all toggle rods 36 to rotate to the inside of the bullet throwing port 322 or the outside of the bullet throwing port 322 by driving only one toggle rod 36, and when all toggle rods 36 rotate to the inside of the bullet throwing port 322, the fire extinguishing bullet arranged inside the bullet storage cylinder 325 can be limited, and the fire extinguishing bullet can not pass through the bullet throwing port 322 under the interference of each toggle rod 36. When all the toggle rods 36 rotate to the outside of the bullet throwing port 322, the limit of the fire extinguishing bullet arranged in the bullet storage cylinder 325 can be released, and the fire extinguishing bullet can be thrown outside through the bullet throwing port 322 freely.

In another embodiment of the present invention, as shown in fig. 6, the tap lever 36 includes a first bending lever segment 361 and a second bending lever segment 362, and the connection portion of the first bending lever segment 361 and the second bending lever segment 362 is rotatably mounted on the peripheral edge of the ejection slot 322 through a corresponding rotation pin. Specifically, by making the tap lever 36 include the first bending lever segment 361 and the second bending lever segment 362, the tap lever 36 is bent integrally, so that it can be rotated to the outside or the inside of the bullet hole 322 more quickly when rotating, on one hand, the work done by the driving mechanism 34 to drive the tap lever 36 is reduced, and on the other hand, the energy consumption of the driving mechanism 34 is saved, and on the other hand, the overall structure of the limiting mechanism 327 is more compact.

In another embodiment of the present invention, as shown in fig. 6, one end of the first bending rod section 361 is rotatably connected to the moving coil ring member 35, and one end of the second bending rod section 362 facing away from the connecting portion forms a limiting end for abutting against the fire extinguishing bomb, and the length of the first bending rod section 361 is smaller than that of the second bending rod section 362. Specifically, by enabling one end of the first bending rod segment 361 to rotate and connect to the moving coil ring 35, one end of the second bending rod segment 362 facing away from the connecting portion forms a limiting end for abutting against the fire extinguishing bomb, so that the toggle rod 36 is clearly functionally divided from a functional perspective.

In another embodiment of the present invention, as shown in FIG. 6, first bending bar segment 361 has a length that is less than second bending bar segment 362. Specifically, by making the length of the first bending rod section 361 smaller than that of the second bending rod section 362, the moment generated by the second bending rod section 362 is enhanced because the second bending rod section 362 is a main functional rod section that actually extends into the bullet throwing port 322 to limit, so that the second bending rod section 362 can be more easily rotated into the bullet throwing port 322 when the toggle rod 36 rotates. Thereby further reducing the power consumption of the drive mechanism 34.

In another embodiment of the present invention, as shown in fig. 6, the limiting mechanism 327 further includes a fixed ring 37, the fixed ring 37 is disposed around the periphery of the bullet hole 322 and is located in the moving ring 35, and each toggle rod 36 is rotatably mounted on the fixed ring 37 through a rotation pin. Specifically, by providing the fixed ring 37, on the one hand, a mounting platform is provided for each toggle lever 36, eliminating the height difference that would be created if the toggle levers 36 were simultaneously rotationally coupled to the peripheral edge of the projectile opening 322 and the moving ring 35. On the other hand, the effective limit is provided for the moving coil ring 35, so that the moving coil ring 35 can be effectively limited by the fixed coil ring 37 and always keeps the rotation track of the moving coil ring 35 free from deviation when rotating relative to the bullet throwing port 322. This improves the overall operational stability and accuracy of the spacing mechanism 327.

In another embodiment of the present invention, as shown in fig. 6, the driving mechanism 34 includes a driving steering engine 341 and a connecting rod 342, the driving steering engine 341 is disposed in the mounting seat 326, the driving end of the driving steering engine 341 is fixedly connected with one end of the connecting rod 342, and the other end of the connecting rod 342 is connected with any toggle rod 36. Specifically, through setting up drive steering wheel 341 and connecting rod 342, drive steering wheel 341 can drive connecting rod 342 like this and stir the swing of stirring rod 36, and then realize the holistic operation of stop gear 327.

In another embodiment of the present invention, as shown in fig. 6, another installation manner of the connecting rod 342 is that the connecting rod 342 is rotatably installed in the installation seat 326, the driving end of the driving steering engine 341 is rotatably connected with one end of the connecting rod 342, and the other end of the connecting rod 342 is connected with any one toggle rod 36. Specifically, through making the connecting rod 342 rotate and install in the mount pad 326, the drive end of drive steering wheel 341 and the one end rotation of connecting rod 342 are connected, and connecting rod 342 just has the rotation moment like this, and then makes its and drive steering wheel 341 between the transmission cooperation become high-efficient, can show the drive power of saving drive steering wheel 341.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims (5)

1. A fire control disaster relief unmanned aerial vehicle, its characterized in that: the fire extinguishing bomb throwing device comprises a main body, a fixing frame and a bomb throwing device, wherein the fixing frame is arranged at the lower end of the main body, the bomb throwing device comprises a transverse pull rod and two bomb throwing mechanisms for throwing fire extinguishing bombs, the transverse pull rod is arranged on the fixing frame and penetrates through the space between the main body and the fixing frame, and the two bomb throwing mechanisms are respectively arranged at two ends of the transverse pull rod;

the two ends of the transverse pull rod are respectively provided with a fixed claw, the upper ends of the two throwing mechanisms are respectively provided with a handle piece, and the fixed claws are connected with the corresponding handle pieces through latch pieces;

at least one claw piece is arranged on one side, facing the fixed frame, of the spring throwing mechanism, and each claw piece is arranged at the lower end of the fixed frame;

the fire extinguishing bomb storage device comprises a fire extinguishing bomb storage mechanism, a fire extinguishing bomb storage mechanism and a fire extinguishing bomb storage mechanism, wherein the fire extinguishing bomb storage mechanism comprises a cover plate part, a bomb storage cylinder used for containing the fire extinguishing bomb, an installation seat and a limiting mechanism, the cover plate part is arranged at the upper end of the bomb storage cylinder, a bomb loading opening is formed in the position, corresponding to the bomb storage cylinder, of the cover plate part, a lifting handle part is arranged on the cover plate part, each claw part is arranged on the installation seat, the installation seat is arranged at the lower end of the bomb storage cylinder, a bomb loading opening is formed in the position, corresponding to the bomb storage cylinder, of the installation seat, and the limiting mechanism is arranged in the installation seat and used for limiting the fire extinguishing bomb in the bomb storage cylinder when the fire extinguishing bomb storage mechanism is in a bomb storage state, and is used for releasing the limitation of the fire extinguishing bomb when the fire extinguishing bomb storage mechanism is in a bomb loading state;

the bullet throwing mechanism further comprises a plurality of fixing rods, and each fixing rod is connected between the cover plate piece and the mounting seat;

the limiting mechanism comprises a driving mechanism, a moving coil ring piece and a plurality of poking rods, each poking rod is rotatably mounted on the peripheral edge of the bullet throwing port through a rotating pin, the moving coil ring piece is annularly arranged on the peripheral edge of the bullet throwing port and can rotate relative to the bullet throwing port, each poking rod is rotatably connected with the moving coil ring piece, the driving mechanism is connected with any poking rod and can drive the poking rod to rotate relative to the corresponding rotating pin, and the poking rod is used for driving the rest poking rods to rotate to the inside of the bullet throwing port or the outside of the bullet throwing port through the moving coil ring piece under the driving of the driving mechanism.

2. The fire rescue unmanned aerial vehicle of claim 1, wherein: the toggle rod comprises a first bending rod section and a second bending rod section, and the connecting parts of the first bending rod section and the second bending rod section are rotatably arranged at the peripheral edge of the bullet throwing opening through corresponding rotating pins.

3. The fire rescue unmanned aerial vehicle of claim 2, wherein: one end of the first bending rod section is rotationally connected to the moving ring piece, one end of the second bending rod section, which is away from the connecting part, forms a limiting end used for being abutted to the fire extinguishing bomb, and the length of the first bending rod section is smaller than that of the second bending rod section.

4. A fire rescue unmanned aerial vehicle as claimed in any one of claims 1 to 3 wherein: the limiting mechanism further comprises a fixed ring piece, the fixed ring piece is arranged on the peripheral edge of the bullet throwing opening in a surrounding mode and located in the moving ring piece, and each toggle rod is rotatably installed on the fixed ring piece through the rotating pin.

5. A fire rescue unmanned aerial vehicle as claimed in any one of claims 1 to 3 wherein: the driving mechanism comprises a driving steering engine and a connecting rod, the driving steering engine is arranged in the mounting seat, the driving end of the driving steering engine is fixedly connected with one end of the connecting rod, and the other end of the connecting rod is connected with any toggle rod;

or the connecting rod is rotatably arranged in the mounting seat, the driving end of the driving steering engine is rotatably connected with one end of the connecting rod, and the other end of the connecting rod is connected with any toggle rod.