Unmanned aerial vehicle fire extinguishing bomb mounting and launching device adaptable to various size specifications

Abstract

The application discloses a UAV fire extinguishing bomb mounting and launching device which can adapt to various sizes of elastic bodies, comprising a main beam, an elastic body clamping assembly, a binding assembly and a launching assembly; the rocker arm elastic body clamping assembly comprises a clamping jaw, a hinged seat and a clamping hoop; the rocker arm binding assembly comprises a binding belt, a release and a locker; one end of the rocker arm binding belt is connected with the rocker arm release, and the other end is locked by the rocker arm locker; the rocker arm locker is connected with the outer side wall of the rocker arm clamping jaw; the rocker arm launching assembly comprises a support seat, a bolt, a bolt connecting rod, a rocker arm, a rudder and a mounting seat; the rocker arm support seat is connected with the outer side of the clamping jaw, and a recess for the rocker arm release is formed in the surface of the rocker arm support seat; the rocker arm support seat is penetrated by a bolt hole; the rocker arm mounting seat is connected with the clamping jaw; the two ends of the rocker arm are respectively hinged with the bolt connecting rod, and the other end of the rocker arm bolt connecting rod is connected with the rocker arm bolt. The fire extinguishing bomb mounting and launching device in the application has high adaptability, stable binding and convenient launching.

Description

Technical Field

[0001] This invention relates to the field of drone firefighting technology, and more specifically to a drone fire extinguishing projectile mounting and delivery device that can accommodate projectiles of various sizes and specifications. Background Technology

[0002] With the maturity of drone technology, drone firefighting has become an important means of dealing with fires in special scenarios such as high-rise buildings, forests, and hazardous chemical sites. Drone fire extinguishing bombs (such as dry powder bombs, gel bombs, and ultrafine dry powder explosive bombs) are widely used due to their advantages of high efficiency, precision, and safety.

[0003] Currently, drones carrying fire extinguishing bombs mainly employ customized mounting methods, meaning that special mounting brackets are designed for specific models and sizes of fire extinguishing bombs; however, there are still some problems with the mounting of fire extinguishing bombs:

[0004] 1. Poor versatility: Fire extinguishing grenades from different manufacturers vary greatly in size (diameter, length), interface (suspension point location, type), and weight. Existing racks can usually only accommodate a single specification of grenades, resulting in complex logistical support, high equipment costs, and limited mission flexibility.

[0005] 2. Low adaptability: When it is necessary to change the type of ammunition during a mission, it is often necessary to manually replace the entire rack or make cumbersome mechanical adjustments, which is time-consuming and cannot meet the needs of rapid response fire fighting.

[0006] 3. Conflict between locking and release reliability: To accommodate projectiles of different sizes, simple binding or clamping methods may not lock securely, causing vibration and detachment during flight; while overly complex mechanical structures may affect the reliability of unlocking at the moment of release, causing "jamming" or "mis-release".

[0007] 4. Poor scalability: Non-modular design or complex installation interface, making it difficult to expand into modules.

[0008] Therefore, developing a drone-mounted fire extinguishing projectile delivery device that is highly adaptable, easy to bind and deploy, and can accommodate projectiles of various sizes and specifications is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] In view of this, the present invention provides a drone fire extinguishing projectile mounting and launching device that is highly adaptable, convenient to bind and deploy, and can accommodate projectiles of various sizes and specifications.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: A drone-mounted and deployed fire extinguishing projectile system adaptable to various projectile sizes and specifications, including: The main beam is connected to the drone; The projectile positioning assembly includes: claws, a hinge seat, and a clamp; two arc-shaped claws are hinged to the hinge seat, and the two claws encircle the fire extinguishing projectile; the clamp is disposed on the top of the hinge seat and is clamped to the outside of the main beam; A binding assembly, comprising: a binding strap, a release buckle, and a locking device; one end of the binding strap is connected to the release buckle, and the other end is locked by the locking device; the locking device is connected to the outer side wall of the claw. A deployment assembly is disposed between the two projectile positioning assemblies. The deployment assembly includes: a support base, a pin, a pin connecting rod, a rocker arm, a servo motor, and a mounting base. The support base is connected to the outer side of the claw, and the surface of the support base has a groove for the release mechanism to be inserted. A pin hole is passed through the support base, and the pin is inserted into the pin hole and passes through the inner hole of the release mechanism. The mounting base is connected to the claw. The fixed end of the servo motor is connected to the mounting base, and the driving end is connected to the rocker arm, driving the rocker arm to swing. Pin connecting rods are hinged to both ends of the rocker arm, and the other end of the pin connecting rod is connected to the pin.

[0011] Preferably, the claw includes: a side plate, a connecting post, and a connecting seat; the connecting post and the connecting seat are both disposed between two parallel side plates.

[0012] Preferably, a hinge shaft is provided inside the hinge seat, and two side plates of the pawl are respectively provided at both ends of the hinge shaft, and a bearing is provided at the connection between the side plates and the hinge shaft.

[0013] Preferably, a bearing spacer is provided between adjacent side plates at the same end of the hinge shaft to separate the bearings.

[0014] Preferably, an oil-free graphite bushing is provided in the inner hole of the tripping mechanism.

[0015] Preferably, the locking device is a ratchet tensioner, the end of the movable end of the strap is wrapped around the ratchet tensioner and locked, and the fixed end of the ratchet tensioner is connected to the connecting post.

[0016] Preferably, the mounting base is connected to a secondary beam, and both ends of the secondary beam pass through the connecting base.

[0017] Preferably, the end of the pin connecting rod away from the rocker arm is hinged to an adjusting connecting rod, and the other end of the adjusting connecting rod is connected to the pin.

[0018] Preferably, a groove is provided on the surface of the end of the pin that connects to the adjusting rod, and the screw post at the end of the adjusting rod passes through the groove and is connected to the fastening nut.

[0019] Preferably, multiple sets of fire extinguishing bombs can be hung on the same main beam at the same time.

[0020] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a drone fire extinguishing projectile mounting and delivery device that can adapt to projectiles of various sizes and specifications, and its beneficial effects are as follows: (1) Through the rotating articulated projectile positioning assembly, the adaptive adjustment of different fire extinguishing projectile diameters can be achieved. The adjustable pin can be adjusted to adapt to different lengths of fire extinguishing projectiles. One servo motor controls the linkage structure of two sets of adjustable pins at the same time, reducing the number of actuators, ensuring the simultaneity of release and the reliability of release, reducing the risk of jamming, and thus realizing the reliable mounting and release function of fire extinguishing projectiles of various sizes and specifications. (2) The number of fire extinguishing grenade launchers can be increased or decreased according to the needs of the scenario and the capabilities of the flight platform, and the number of fire extinguishing grenade launchers can be increased or decreased. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the fire extinguishing bomb mounting and launching device provided by the present invention from one perspective; Figure 2 Another structural schematic diagram of the fire extinguishing bomb mounting and launching device provided by the present invention; Figure 3 This is a schematic diagram of the structure of the projectile positioning assembly provided by the present invention; Figure 4 This is a front view of the projectile positioning assembly provided by the present invention; Figure 5 Provided by the present invention Figure 4 Structural cross-sectional view at point AA; Figure 6 Provided by the present invention Figure 5 Enlarged view of the structure at point B; Figure 7 This is a schematic diagram of the structure of the binding component provided by the present invention; Figure 8 Provided by the present invention Figure 7 Enlarged view of the structure at point E in the middle; Figure 9 Provided by the present invention Figure 8 Structural cross-sectional view at point C; Figure 10 Provided by the present invention Figure 7 Structural cross-sectional view at point DD; Figure 11 This is a schematic diagram of the dispensing component provided by the present invention; Figure 12 This is the main view of the delivery component provided by the present invention; Figure 13 Provided by the present invention Figure 12 Structural cross-sectional view at point FF; Figure 14 Provided by the present invention Figure 13 Enlarged view of the structure at point G in the middle; Figure 15 Provided by the present invention Figure 13 Enlarged view of the structure at point H; Figure 16 Provided by the present invention Figure 13 Enlarged view of the structure at point I in the middle; Figure 17 Provided by the present invention Figure 13 Enlarged view of the structure at point J; Figure 18 A diagram showing the structural change of the pin of the dispensing component provided by the present invention from the closed to the open state; Figure 19 A diagram illustrating the structural changes during the adjustment of the pin length of the delivery component provided by this invention. Figure 20 Comparison diagram of the structure of the projectile positioning assembly provided by the present invention for clamping fire extinguishing projectiles of different sizes; Figure 21 A structural comparison diagram of the fire extinguishing bomb mounting and launching device provided by the present invention for mounting fire extinguishing bombs of different sizes; Figure 22 This is a schematic diagram of the structure of a drone carrying a single fire extinguishing bomb provided by the present invention; Figure 23 This is a schematic diagram of the structure of a drone carrying four fire extinguishing bombs, provided by the present invention.

[0023] In the figure, 1-Main beam; 2-Projectile positioning assembly; 21-Claw; 22-Hinge seat; 23-Clamp; 24-Side plate; 25-Connecting column; 26-Connecting seat; 27-Hinge shaft; 28-Bearing; 29-Bearing spacer; 3-Binding assembly; 31-Binding strap; 32-Releasing; 33-Locking device; 34-Inner hole; 35-Oil-free graphite bushing; 4-Deployment assembly; 41-Support seat; 42-Pin; 43-Pin connecting rod; 44-Rocker arm; 45-Servo motor; 46-Mounting seat; 47-Groove; 48-Pin hole; 49-Sub-beam; 410-Adjustable linkage; 411-Slide groove; 412-Fasting nut; 5-Fire extinguishing projectile. Detailed Implementation

[0024] 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.

[0025] This invention discloses a drone-mounted and deployed fire extinguishing projectile that can accommodate projectiles of various sizes and specifications, comprising: One main beam, connected to the drone; The projectile positioning assembly 2 includes: claws 21, hinge base 22, and clamp 23; two arc-shaped claws 21 are hinged to the hinge base 22, and the two claws 21 encircle the fire extinguishing projectile 5; the clamp 23 is set on the top of the hinge base 22 and is clamped to the outside of the main beam 1. The binding assembly 3 includes: a binding strap 31, a release buckle 32, and a locking device 33; one end of the binding strap 31 is connected to the release buckle 32, and the other end is locked by the locking device 33; the locking device 33 is connected to the outer connecting post 25 of the claw 21. The launch assembly 4 is positioned between the two projectile positioning assemblies 2. The launch assembly 4 includes: a support base 41, a pin 42, a pin connecting rod 43, a rocker arm 44, a servo motor 45, and a mounting base 46. The support base 41 is connected to the outer connecting seat 26 of the claw 21. The surface of the support base 41 has a groove 47 for the release 32 to be inserted. A pin hole 48 passes through the support base 41. An oil-free graphite bushing passes through the pin hole 48. The pin 42 is inserted into the inner hole of the oil-free graphite bushing and passes through the inner hole 34 of the release 32. The mounting base 46 is connected to the claw 21. The fixed end of the servo motor 45 is connected to the mounting base 46, and the driving end is connected to the rocker arm 44, driving the rocker arm 44 to swing. The two ends of the rocker arm 44 are respectively hinged to the pin connecting rod 43, and the other end of the pin connecting rod 43 is connected to the pin 42.

[0026] In one embodiment, the claw 21 includes: a side plate 24, a connecting post 25, and a connecting seat 26; the connecting post 25 and the connecting seat 26 are both disposed between two parallel side plates 24.

[0027] In one embodiment, a hinge shaft 27 is provided inside the hinge base 22, and two side plates 24 of the claws 21 are respectively provided at both ends of the hinge shaft 27. A bearing 28 is provided at the connection between the side plates 24 and the hinge shaft 27. Both claws 21 can rotate around the hinge shaft 27, and the opening and closing distance of the two claws 21 can be adjusted to achieve clamping and fixing of fire extinguishing bombs 5 of different diameters.

[0028] In one embodiment, a bearing spacer 29 for separating the bearing 28 is provided between adjacent side plates 24 at the same end of the hinge shaft 27. The bearing spacer 29 prevents adjacent side plates 24 from affecting each other.

[0029] In one embodiment, an oil-free graphite bushing 35 is provided in the inner hole 34 of the trip 32. The trip 32 equipped with the oil-free graphite bushing 35 can greatly reduce the friction between the inner hole 34 of the trip 32 and the pin 42, and greatly reduce the torque of the output shaft of the servo motor 45 in the release assembly 4 to pull the pin 42, making the device smoother and more sensitive when releasing the fire extinguishing bomb 5, and reducing the risk of bomb release failure due to friction blockage of the pin 42.

[0030] In one embodiment, the locking device 33 is a ratchet tensioner, the end of the movable end of the strap 31 is wrapped around the ratchet tensioner and locked, and the fixed end of the ratchet tensioner is connected to the connecting post 25.

[0031] In one embodiment, the strap 31 is made of fiber straps, such as... Figure 7 As shown, one end of the fiber strap is fixed in the end hole of the release 32, and the other end is a movable end. The movable end of the fiber strap passes through the hole of the ratchet tensioner shaft. By pressing the ratchet tensioner to tighten the movable end of the fiber strap, the fiber strap can be tightened, thus securing the fire extinguishing bomb 5. The ratchet tensioner is an existing component, and its internal structure is not innovative, so it will not be described in detail here.

[0032] In one embodiment, the mounting base 46 is connected to a secondary beam 49, with both ends of the secondary beam 49 passing through the connecting base 26. When the overall length of the delivery assembly 4 needs to be adjusted according to the length of the fire extinguishing bomb 5, the mounting base 46 can move along the secondary beam 49 to adjust the corresponding position.

[0033] In one embodiment, the end of the pin link 43 away from the rocker arm 44 is hinged to an adjusting link 410, and the other end of the adjusting link 410 is connected to the pin 42. Adding the adjusting link 410 can adjust the overall length of the delivery assembly 4, thereby accommodating fire extinguishing bombs 5 of different lengths.

[0034] In one embodiment, a groove 411 is formed on the surface of the end of the pin 42 that connects to the adjusting rod 410. The screw post at the end of the adjusting rod 410 passes through the groove 411 and is connected to the fastening nut 412. The end of the adjusting rod 410 can slide and adjust its position within the groove 411, and then the relative position of the adjusting rod 410 and the pin 42 is fixed by the fastening nut 412, thereby facilitating the adjustment of the overall length of the delivery assembly 4 to accommodate fire extinguishing bombs 5 of different lengths.

[0035] In one embodiment, the combination of pin 42 and adjusting link 410 can also be replaced with pins of different lengths, allowing for the selection of a suitable pin length directly as needed, without adjusting the center distance between the pin and the pin link 43. This further increases the adjustment range for adapting to the length of the fire extinguishing bomb 5.

[0036] In one embodiment, the dead point in the linkage mechanism composed of pin 42, pin linkage 43 and rocker arm 44 is used to achieve one-way locking, which avoids the fire extinguishing bomb from accidentally falling off, reduces the risk of mis-deployment, and improves the reliability of the transport.

[0037] In one embodiment, multiple sets of fire extinguishing bombs 5 can be simultaneously mounted on the same main beam 1. Multiple main beams 1 can be mounted on the bottom of the drone. The delivery device is modularly designed, and the number of delivery devices can be increased or decreased according to the payload capacity of the drone flight platform and the actual load requirements of the fire extinguishing bombs 5.

[0038] The working process of the fire extinguishing bomb mounting and launching device: 1) Fire extinguishing bomb loading process One or more fire extinguishing grenade mounting and launching device modules are fixed to the UAV flight platform via the upper main beam 1 (carbon fiber tube or steel structure). The main beam 1 is fixed to the flight platform's mounting points via cross clamps. The fire extinguishing grenade mounting and launching device is connected and fixed to the main beam 1 via clamp 23 (which can be a wing nut clamp). The rocker arm 44 of the launching component 4 rotates clockwise by manual swing (without power) or remote control operation (with power), causing the two left and right pins 42 to move linearly in the direction of the servo motor 45 simultaneously, and the ends of the two pins 42 disengage from the support. With the outer pin hole 48 of the base 41, i.e. the pin 42 in the open state, insert the release 32 of the two sets of binding components 3 into the middle groove 47 of the support base 41, and align the inner hole 34 of the release 32 with the end of the pin 42. Then, manually swing (without power) or operate the remote control (with power) to rotate the rocker arm 44 of the delivery component 4 counterclockwise, so that the pin 42 is inserted into the inner hole 34 of the release 32 and continues to be inserted into the outer pin hole 48 of the support base 41, thus completing the connection between the movable end of the two sets of binding components 3 and the delivery component 4.

[0039] When the pin 42 is in the closed state, the rocker arm 44, the pin 42, and the related connecting rods are in a straight line. At this time, the connection between the pin 42, the adjusting rod 410, the pin connecting rod 43, and the rocker arm 44 is in a dead point state, that is, the pin 42 cannot slide actively, that is, the pin 42 cannot be opened actively. This ensures the reliability of the connection of the binding assembly 3, avoids the release device from being opened accidentally, and avoids the fire extinguishing bomb 5 from being released accidentally.

[0040] 2) The process of binding fire extinguishing bombs After the fire extinguishing bomb 5 is pushed under the mounting and launching device, the ends of the fiber straps of the two sets of binding components 3 are wrapped around the fire extinguishing bomb 5 and then inserted into the rope inlet holes of the ratchet tensioner fixed on the bomb body locking component 1. The ratchet tensioner rocker arm is turned to tighten the fiber straps until the fire extinguishing bomb 5 is locked into the bomb body locking component 1, thus completing the mounting and fixing of the fire extinguishing bomb 5.

[0041] 3) The process of dropping fire extinguishing bombs After the drone flight platform transports the fire extinguishing bomb 5 to a fixed altitude above the designated delivery point, it sends a signal to the servo motor 45 via flight control or ground remote control, causing the rocker arm 44 to... Figure 18 Rotate clockwise from the center of view, as follows: Figure 18 The rocker arm 44 simultaneously controls the two left and right pins 42 to move linearly towards the servo motor 45. The release 32 of the two sets of binding components 3 simultaneously loses the constraint of the two pins 42. Under the action of gravity of the fire extinguishing bomb 5, the fire extinguishing bomb 5 falls freely, completing the controllable release of the fire extinguishing bomb 5.

[0042] 4) Adjustment of the mounting of fire extinguishing projectiles of different sizes and specifications The mainstream fire extinguishing grenades on the market are 10L, 25L, and 50L. Some manufacturers further subdivide them into 10L, 15L, 20L, 25L, 30L, and 50L to meet various needs. The diameter and length of the grenades also vary depending on their specifications.

[0043] like Figure 20 , 21 As shown, the two left and right claws 21 of the projectile positioning assembly 1 can rotate around the hinge point. When fire extinguishing projectiles 5 of different diameters are installed into the positioning position, as the ratchet tensioner in the binding assembly 3 tightens the fiber binding strap, the two claws 21 will adapt to the diameter of the fire extinguishing projectile 5, gripping and fixing the fire extinguishing projectile 5. This realizes the adaptive adjustment function of the mounting and dispensing device for the diameter of the fire extinguishing projectile 5.

[0044] like Figure 19 , 21 As shown, when the length of the fire extinguishing bomb 5 is different and the spacing between the two sets of binding components 3 needs to be adjusted, it can be quickly adjusted in the following way: First, loosen the fastening nut 412 of the pin 42 and the adjusting rod 410 in the delivery component 4. Then the slide groove 411 at the right end of the pin 42 can slide left and right along the screw post on the adjusting rod 410. That is, the distance between the two pins 42 on the left and right sides of the delivery device 4 is adjustable.

[0045] like Figure 21As shown, after loosening the fastening nut 412, loosen the set screws of the connecting seat 26 and the two secondary beams 49 of the fire extinguishing grenade mounting and launching device in the two projectile positioning assemblies 2, loosen the two clamps 23, and then slide the two projectile positioning assemblies 2 to make the distance (span) between the two projectile positioning assemblies 2 the required size, that is, suitable for the length of the fire extinguishing grenade 5. Then tighten the set screws of the connecting seat 26 and the secondary beam 49, the set clamps 23 and the fastening nut 412 in sequence to complete the adjustment to adapt to the length of the fire extinguishing grenade 5.

[0046] In summary, by adjusting the different specifications, diameters, and lengths of the fire extinguishing bombs 5, it is possible to adapt to the mounting and deployment of fire extinguishing bombs 5 of different specifications.

[0047] 5) Module expansion function The fire extinguishing grenade mounting and delivery device of this invention is modularly arranged. It can be configured as a single module or expanded into multiple modules according to fire extinguishing needs and the payload capacity of the drone. The expansion of modules can be achieved simply by adjusting the length of the main beam (a common carbon fiber tube or metal tube) as required. Figure 22 , 23 As shown.

[0048] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drone-mounted and deployed fire extinguishing projectile device adaptable to various projectile sizes and specifications, characterized in that: include: The main beam is connected to the drone; The projectile positioning assembly includes: claws, a hinge seat, and a clamp; two arc-shaped claws are hinged to the hinge seat, and the two claws encircle the fire extinguishing projectile; the clamp is disposed on the top of the hinge seat and is clamped to the outside of the main beam; A binding assembly, comprising: a binding strap, a release buckle, and a locking device; one end of the binding strap is connected to the release buckle, and the other end is locked by the locking device; the locking device is connected to the outer side wall of the claw. A deployment assembly is disposed between the two projectile positioning assemblies. The deployment assembly includes: a support base, a pin, a pin connecting rod, a rocker arm, a servo motor, and a mounting base. The support base is connected to the outer side of the claw, and the surface of the support base has a groove for the release mechanism to be inserted. A pin hole is passed through the support base, and the pin is inserted into the pin hole and passes through the inner hole of the release mechanism. The mounting base is connected to the claw. The fixed end of the servo motor is connected to the mounting base, and the driving end is connected to the rocker arm, driving the rocker arm to swing. Pin connecting rods are hinged to both ends of the rocker arm, and the other end of the pin connecting rod is connected to the pin.

2. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 1, characterized in that, The claw includes: a side plate, a connecting post, and a connecting seat; the connecting post and the connecting seat are both disposed between two parallel side plates.

3. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 2, characterized in that, The hinge seat is provided with a hinge shaft, and the two side plates of the pawl are respectively provided at both ends of the hinge shaft. A bearing is provided at the connection between the side plate and the hinge shaft.

4. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 3, characterized in that, A bearing spacer is provided between adjacent side plates at the same end of the hinge shaft to separate the bearings.

5. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 1, characterized in that, An oil-free graphite bushing is provided in the inner hole of the tripping mechanism.

6. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 2, characterized in that, The locking device is a ratchet tensioner. The end of the movable end of the strap is wrapped around the ratchet tensioner and locked. The fixed end of the ratchet tensioner is connected to the connecting post.

7. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 2, characterized in that, The mounting base is connected to a secondary beam, and both ends of the secondary beam pass through the mounting base.

8. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 1, characterized in that, The end of the pin connecting rod away from the rocker arm is hinged to an adjusting rod, and the other end of the adjusting rod is connected to the pin.

9. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 8, characterized in that, The pin has a groove on one end of its surface that connects to the adjusting rod, and the screw post at the end of the adjusting rod passes through the groove and is connected to the fastening nut.

10. The UAV fire extinguishing projectile mounting and delivery device adaptable to various projectile sizes and specifications as described in claim 1, characterized in that, Multiple sets of fire extinguishing bombs can be hung on the same main beam at the same time.

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