A multi-rotor fire extinguishing bomb throwing drone and a throwing system

Abstract

The present invention discloses a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle and a throwing system, which relates to the technical field of unmanned aerial vehicles and includes: a throwing structure, which includes a clamping structure and a shaft disc. The clamping structure includes a clamping seat and a release structure. The release structure is used to drive the clamping seat to release the fire extinguishing bomb. The clamping seat is coaxially assembled on the shaft disc, and the shaft disc is coaxially assembled on the suspension shaft. The shaft disc is driven by an external force to rotate along the central axis of the suspension shaft. The rotating shaft disc cooperates with the clamping seat to throw the fire extinguishing bomb along the direction of the throwing track. The shaft disc is driven by an external force to rotate along the central axis of the suspension shaft. The rotating shaft disc cooperates with the clamping seat to throw the fire extinguishing bomb along the direction of the throwing track, so as to drive the fire extinguishing bomb to be thrown out with a certain initial velocity, so that the fire extinguishing bomb generates a certain displacement in the horizontal direction, and the fire extinguishing bomb with a horizontal distance can pass through the windows or other openings of the building and accurately enter the room to adapt to different building structures and fire scenarios.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and particularly to a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle and a throwing system. Background Art

[0002] Traditional ground fire-fighting equipment has many limitations when dealing with high-rise building fires, such as difficulty in reaching the fire source location, low rescue efficiency, etc.

[0003] Chinese Patent with the authorization announcement number CN220786122U discloses a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle, including an unmanned aerial vehicle body and a plurality of arms arranged around the unmanned aerial vehicle body. One end of the arm far from the unmanned aerial vehicle body is provided with a propeller. A landing gear is connected to the lower end surface of the unmanned aerial vehicle body. One or more guiding cylinders for placing fire extinguishing bombs are fixedly arranged on the unmanned aerial vehicle body. The guiding cylinder penetrates through the unmanned aerial vehicle body up and down, and the upper part extends above the unmanned aerial vehicle body, and the lower part extends below the unmanned aerial vehicle body. A throwing baffle is arranged below the guiding cylinder. One side of the throwing baffle is installed on the landing gear. After the throwing baffle is laid flat and locked, it is used for supporting the fire extinguishing bomb. After the throwing baffle is unlocked and turned down, it is used for throwing the fire extinguishing bomb. One or more guiding cylinders for placing fire extinguishing bombs are fixedly arranged on the unmanned aerial vehicle body. The guiding cylinder penetrates through the unmanned aerial vehicle body up and down, and the upper part extends above the unmanned aerial vehicle body, and the lower part extends below the unmanned aerial vehicle body. The design that the guiding cylinder penetrates through the unmanned aerial vehicle body makes the whole aircraft more compact. The fire extinguishing bomb is directly placed from above the aircraft, which is convenient for placing the fire extinguishing bomb on site and saves the cumbersome hanging and hoisting of the fire extinguishing bomb. Second, the guiding cylinder can be adapted to various specifications and models of fire extinguishing bombs in the market and can carry two 28 kg altitude-fixed fire extinguishing bombs.

[0004] With the acceleration of the urbanization process, there are more and more high-rise buildings, and the risk of fire accidents also increases accordingly. Traditional ground fire-fighting equipment has many limitations when dealing with high-rise building fires, such as difficulty in reaching the fire source location, low rescue efficiency, etc. There are still some deficiencies in the throwing systems of traditional unmanned aerial vehicles. For example, the throwing method mostly uses a catapult to push the fire extinguishing bomb through a spring or gas. Although it is simple, there are problems such as a large reaction force when applied to an unmanned aerial vehicle, which easily affects the flight stability of the unmanned aerial vehicle. In addition, some existing unmanned aerial vehicle throwing systems use mechanical clamping devices to release the fire extinguishing bomb by driving the clamping arm with a motor, but these devices have complex structures and large weights, increasing the burden on the unmanned aerial vehicle.

[0005] Therefore, the present invention proposes a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle and a throwing system to solve the above problems. Summary of the Invention

[0006] In view of the problems existing in the above-mentioned prior art, the present invention is proposed.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: A throwing system for a multi-rotor fire extinguishing bomb throwing drone, which includes:

[0008] A suspension shaft, at the bottom of which a throwing box is fixed, and a throwing track is provided along the radial direction of the throwing box;

[0009] A throwing structure, which includes a clamping structure and a shaft disc. The clamping structure includes a clamping seat and a release structure. The release structure is used to drive the clamping seat to release the fire extinguishing bomb. The clamping seat is coaxially assembled on the shaft disc, and the shaft disc is coaxially assembled on the suspension shaft. The shaft disc is driven by an external force to rotate along the central axis of the suspension shaft, and the rotating shaft disc cooperates with the clamping seat to throw the fire extinguishing bomb along the direction of the throwing track.

[0010] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone of the present invention, wherein: the suspension shaft includes a coaxial upper shaft body and a lower shaft body. The throwing box is fixed at the bottom end of the lower shaft body. The lower shaft body is hoisted inside the upper shaft body, and the shaft disc is fixed on the surface of the lower shaft body;

[0011] A driving structure provided on the suspension shaft, which includes a driving unit and an annular gear. The annular gear is coaxially arranged with the lower shaft body and is fixed on the surface of the lower shaft body. The driving unit drives the annular gear to rotate to drive the lower shaft body and the shaft disc to rotate.

[0012] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone of the present invention, wherein: the number of the clamping seats is multiple groups, and multiple groups of the clamping seats are circumferentially distributed at equal intervals on the shaft disc. The clamping seat is configured as an outer clamping plate and an inner clamping plate, and the outer clamping plate and the inner clamping plate move towards or away from each other to clamp or release the fire extinguishing bomb.

[0013] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone of the present invention, wherein: a set of trigger mechanisms are provided along the direction of the throwing track. The trigger mechanisms include a transmitting plate, a receiving plate and a hand-held remote control;

[0014] The transmitting plate emits laser light, which is received by the receiving plate provided on the outside of the clamping seat;

[0015] Multiple groups of the clamping seats are numbered and input into the hand-held remote control, and are individually driven by the hand-held remote control;

[0016] The release structure is configured with a release state. When the receiving plate on the clamping seat receives the laser signal of the transmitting plate and the speed of the clamping seat reaches the throwing speed, the release structure drives the left clamping plate and the right clamping plate to move away from each other to release the fire extinguishing bomb.

[0017] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone described in the present invention, wherein: the outer clamping plate and the inner clamping plate are symmetrically arranged, and the inner clamping plate is attracted by magnetic force to move towards the outer clamping plate to clamp the fire extinguishing bomb, and the diameter of the fire extinguishing bomb is greater than the clamping width when the inner clamping plate and the outer clamping plate are attached to each other;

[0018] The release structure includes an electromagnetic attraction structure and a switching mechanism. The electromagnetic attraction structure is assembled in the inner clamping plate. The electromagnetic attraction structure is used to generate the same or opposite magnetism as the outer clamping plate to eliminate or increase the clamping force between the outer clamping plate and the inner clamping plate. The switching mechanism is used to switch the circuit accessed by the electromagnetic attraction structure to change the current in the circuit.

[0019] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone described in the present invention, wherein: the electromagnetic attraction structure includes an electromagnetic component and two groups of batteries. One end of the electromagnetic component is connected to the power supply ends of the two groups of batteries, and the other end of the electromagnetic component is connected to the switching mechanism. By pushing the switching mechanism, different batteries are connected to the circuit.

[0020] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone described in the present invention, wherein: the switching mechanism includes a guiding component, two contact pieces and a transmission structure. The transmission structure is used to push the guiding component to move horizontally to drive the guiding component to contact different contact pieces;

[0021] The guiding component includes a guiding plate, an arc-shaped bending piece and two groups of trigger pieces. The trigger pieces are located at the ends of the arc-shaped bending piece, and the two groups of trigger pieces are respectively connected to the two groups of batteries. The transmission structure pushes the arc-shaped bending piece so that the trigger pieces contact the contact pieces to change the current direction in the electromagnetic component.

[0022] As a preferred solution of the throwing system of the multi-rotor fire extinguishing bomb throwing drone described in the present invention, wherein: the release structure further includes a telescopic component. The telescopic component is arranged between the outer clamping plate and the inner clamping plate and is used to drive the inner clamping plate to move away from the outer clamping plate. The telescopic component includes a guiding rod and a telescopic unit. The guiding rod is fixed on the surface of the outer clamping plate and penetrates through the inner clamping plate to drive the inner clamping plate to move directionally along the guiding rod;

[0023] The telescopic unit includes a support rod and a spring. The spring is sleeved on the support rod. The support rod is fixed on the outer clamping plate, and a through hole for the support rod to penetrate is provided on the inner clamping plate.

[0024] A multi-rotor fire extinguishing bomb throwing drone includes a drone body, a throwing system and a suspension rod. The drone body suspends the throwing system through the suspension rod.

[0025] As a preferred embodiment of the multi-rotor fire extinguishing bomb throwing drone of the present invention, wherein: the suspension rod is led out from the shell of the drone body and is flange-connected to the upper shaft body.

[0026] Advantages of the present invention: The throwing system of the present invention includes a suspension shaft and a throwing structure. The throwing structure includes a shaft disc, a clamping seat, and a release structure. The shaft disc is driven by an external force to rotate along the central axis of the suspension shaft. The rotating shaft disc cooperates with the clamping seat to throw the fire extinguishing bomb along the direction of the throwing track, so as to drive the fire extinguishing bomb to be thrown out with a certain initial velocity, so that the fire extinguishing bomb generates a certain displacement in the horizontal direction. The fire extinguishing bomb with a horizontal distance can pass through the windows or other openings of the building and accurately enter the room to adapt to different building structures and fire scenarios; Secondly, the method of rotating and throwing the fire extinguishing bomb uses centrifugal force to throw the fire extinguishing bomb. The fire extinguishing bomb will not give the drone an obvious reaction force during the throwing process, ensuring the flight stability and controllability. Brief Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of a multi-rotor fire extinguishing bomb throwing drone in the present invention;

[0029] Figure 2 It is a bottom view of the overall structure of a multi-rotor fire extinguishing bomb throwing drone in the present invention;

[0030] Figure 3 It is a schematic diagram of the overall structure of the throwing system in the present invention;

[0031] Figure 4 It is a schematic diagram of the overall structure of the suspension shaft in the present invention;

[0032] Figure 5 It is a detailed structure diagram of the shaft disc in the present invention;

[0033] Figure 6 It is a schematic diagram of the overall structure of the release structure in the present invention;

[0034] Figure 7 It is a schematic diagram of the overall structure of the clamping seat in the present invention;

[0035] Figure 8 It is Figure 7 an enlarged view of the structure of part A;

[0036] Figure 9 Schematic diagram of the overall structure of the release structure of the present invention Figure 1 ;

[0037] Figure 10 Schematic diagram of the overall structure of the release structure of the present invention Figure 2 。

[0038] Reference numerals: 100, UAV body; 110, suspension rod; 200, suspension shaft; 210, upper shaft body; 220, lower shaft body; 300, throwing structure; 310, shaft disc; 311, guiding groove; 320, clamping seat; 321, outer clamping plate; 322, inner clamping plate; 330, release structure; 331, electromagnetic suction structure; 3311, iron core; 3312, coil; 3313, forward battery; 3314, reverse battery; 332, switching mechanism; 3321, contact piece; 3322, transmission structure; 3323, guiding plate; 3324, arc-shaped bent piece; 3325, trigger piece; 333, telescopic assembly; 3331, guiding rod; 3332, spring; 3333, through hole; 3334, support rod; 400, fire extinguishing bomb; 500, throwing box; 510, throwing track; 600, driving structure; 610, annular gear; 620, driving motor; 630, driving gear; 700, triggering mechanism; 710, emitting plate; 720, receiving plate; 730, hand-held remote controller; 800, mounting plate. Detailed implementation manners

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific implementation manners of the present invention will be made with reference to the accompanying drawings of the specification.

[0040] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0041] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation manner of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that excludes other embodiments.

[0042] Embodiment 1

[0043] Referring to Figures 1 to 5 as shown, this is the first embodiment of the present invention. This embodiment provides a throwing system for a multi-rotor fire extinguishing bomb throwing UAV, including a suspension shaft 200 and a throwing structure 300:

[0044] The suspension shaft 200 has a throwing box 500 fixed to its bottom, and a throwing track 510 is provided along the radial direction of the throwing box 500. The throwing track 510 is used to guide the fire extinguishing bomb 400 to be thrown along a predetermined track. The throwing track 510 is used to throw the fire extinguishing bomb 400 at a specific initial velocity and projection angle and fly out along a predetermined projection trajectory, so as to achieve accurate throwing.

[0045] The throwing structure 300 includes a clamping structure and a shaft disc 310. The clamping structure includes a clamping seat 320 and a release structure 330. The release structure 330 is used to drive the clamping seat 320 to release the fire extinguishing bomb 400. The clamping seat 320 is coaxially assembled on the shaft disc 310, and the shaft disc 310 is coaxially assembled on the suspension shaft 200. The shaft disc 310 is driven by an external force to rotate along the central axis of the suspension shaft 200, and the rotating shaft disc 310 cooperates with the clamping seat 320 to throw the fire extinguishing bomb 400 along the direction of the throwing track 510.

[0046] The suspension shaft 200 includes a coaxial upper shaft body 210 and a lower shaft body 220. The throwing box 500 is fixed to the bottom end of the lower shaft body 220. The lower shaft body 220 is hoisted inside the upper shaft body 210, and the shaft disc 310 is fixed to the surface of the lower shaft body 220;

[0047] A driving structure 600 provided on the suspension shaft 200 includes a driving unit and an annular gear 610. The annular gear 610 is coaxially arranged with the lower shaft body 220 and is fixed to the surface of the lower shaft body 220. The driving unit drives the annular gear 610 to rotate to drive the lower shaft body 220 and the shaft disc 310 to rotate.

[0048] Specifically, the driving unit includes a driving motor 620 and a driving gear 630 located at the output end of the driving motor 620. The driving gear 630 meshes with the annular gear 610.

[0049] An installation disc 800 is fixed to one end of the upper shaft body 210 close to the lower shaft body 220. The installation disc 800 is used to fix the driving motor 620. The driving motor 620 with a fixed position is used to drive the annular gear 610 to rotate. The driving motor 620 drives the driving gear 630 and the annular gear 610 to mesh to drive the annular gear 610 to rotate.

[0050] The annular gear 610 is coaxially arranged with the lower shaft body 220 and is fixed to the surface of the lower shaft body 220. When the annular gear 610 is driven to rotate, the lower shaft body 220 and the shaft disc 310 are synchronously driven to rotate, and the clamping seat 320 and the fire extinguishing bomb 400 fixed on the shaft disc 310 rotate synchronously.

[0051] The drive motor 620 serves as the power source. The drive motor 620 drives the lower shaft body 220 and the shaft disc 310 to rotate through the drive gear 630 and the ring gear 610. The rotational angular velocity gradually increases from zero. When the fire extinguishing bomb 400 on the shaft disc 310 reaches the speed required for the throwing of the fire extinguishing bomb 400, it continues to rotate at a constant speed.

[0052] The number of the clamping seats 320 is multiple groups. The multiple groups of clamping seats 320 are circumferentially distributed at equal intervals on the shaft disc 310. The clamping seats 320 are configured as an outer clamping plate 321 and an inner clamping plate 322. The outer clamping plate 321 and the inner clamping plate 322 move towards or away from each other to clamp or release the fire extinguishing bomb 400.

[0053] A set of triggering mechanisms 700 is provided along the direction of the throwing track 510. The triggering mechanisms 700 include a transmitting plate 710, a receiving plate 720, and a hand-held remote controller 730;

[0054] The transmitting plate 710 emits laser light, which is received by the receiving plate 720 arranged outside the clamping seat 320;

[0055] The multiple groups of clamping seats 320 are numbered and input into the hand-held remote controller 730, and are driven individually through the hand-held remote controller 730;

[0056] The release structure 330 is configured in a released state. When the receiving plate 720 on the clamping seat 320 receives the laser signal of the transmitting plate 710 and the speed of the clamping seat 320 reaches the throwing speed, the release structure 330 drives the left clamping plate and the right clamping plate to move away from each other to release the fire extinguishing bomb 400.

[0057] Specifically, the throwing box 500 is fixed to the bottom of the upper shaft body 210, synchronizing the movement of the upper shaft body 210 and the drone. Due to the irregular annular box structure of the throwing box 500 and the use of structures with different materials, the center of gravity of the throwing system is driven to be located on the central axis of the suspension shaft 200, and at the same time, the central axis of the suspension shaft 200 coincides with the central axis of the drone.

[0058] Specifically, the suspension shaft 200 includes an upper shaft body 210 and a lower shaft body 220. The bottom of the lower shaft body 220 is fixed with a throwing box 500, and the lower shaft body 220 is hoisted inside the upper shaft body 210. The shaft disc 310 is fixed on the surface of the lower shaft body 220. The shaft disc 310 is driven by an external force to rotate along the central axis of the suspension shaft 200. The drive structure 600 is located on the suspension shaft 200. The drive structure 600 is composed of a drive unit and a ring gear 610. The drive unit includes a drive motor 620 and a drive gear 630. The drive motor 620 drives the ring gear 610 to rotate through the meshing action of the drive gear 630 and the ring gear 610, and then drives the lower shaft body 220 and the shaft disc 310 to rotate synchronously.

[0059] The clamping seat 320 is composed of an outer clamping plate 321 and an inner clamping plate 322, and is used to clamp or release the fire extinguishing bomb 400. When the shaft disc 310 rotates, the clamping seat 320 will rotate together with it. The clamping seat 320 accelerates with the shaft disc 310 until it reaches the preset throwing speed and then rotates at a constant speed.

[0060] When it is necessary to throw the fire extinguishing bomb 400, the clamping seat 320 to be driven is remotely driven through the handheld remote controller 730. The clamping seat 320 rotates uniformly at the throwing speed following the shaft disc 310. When the laser signal emitted by the emission plate 710 is captured by the receiving plate 720 on the clamping seat 320, the trigger mechanism 700 will activate the release structure 330, causing the inner and outer clamping plates 321 of the clamping seat 320 to move away from each other, thereby releasing the fire extinguishing bomb 400.

[0061] Any thrown fire extinguishing bomb 400 has the same running track. The release position and release speed of any fire extinguishing bomb 400 are the same, and a throwing track 510 is provided for projection. The fire extinguishing bomb 400 flies along the predetermined track and accurately hits the target area.

[0062] Rotating and projecting the fire extinguishing bomb 400 ensures that the fire extinguishing bomb 400 is thrown out with a certain initial velocity. The fire extinguishing bomb 400 with a certain initial velocity is projected along the throwing track 510, so that the fire extinguishing bomb 400 generates a certain displacement in the horizontal direction. The fire extinguishing bomb 400 with a horizontal distance can pass through the windows or other openings of the building and accurately enter the room to adapt to different building structures and fire scenarios.

[0063] The way of rotating and projecting the fire extinguishing bomb 400 is to throw the fire extinguishing bomb 400 using centrifugal force, rather than relying on the catapult to catapult, that is, not traditionally relying on the recoil force of the catapult, which indicates that the fire extinguishing bomb 400 will not give the unmanned aerial vehicle an obvious reaction force during the throwing process, ensuring the flight stability and controllability.

[0064] Embodiment 2

[0065] Refer to Figures 5 to 10 As shown, this is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is:

[0066] The outer clamping plate 321 and the inner clamping plate 322 are symmetrically arranged. The inner clamping plate 322 is attracted by magnetic force to move towards the outer clamping plate 321 to clamp the fire extinguishing bomb 400. The diameter of the fire extinguishing bomb 400 is greater than the clamping width when the inner clamping plate 322 and the outer clamping plate 321 are in contact with each other;

[0067] The release structure 330 includes an electromagnetic attraction structure 331 and a switching mechanism 332. The electromagnetic attraction structure 331 is assembled inside the inner clamping plate 322. The electromagnetic attraction structure 331 is used to generate a magnetic force that is the same as or opposite to that of the outer clamping plate 321, so as to eliminate or increase the clamping force between the outer clamping plate 321 and the inner clamping plate 322. The switching mechanism 332 is used to switch the circuit connected to the electromagnetic attraction structure 331 to change the current in the circuit, thereby driving the electromagnetic attraction structure 331 to generate two opposite magnetic forces.

[0068] The electromagnetic attraction structure 331 includes an electromagnetic component and two groups of batteries. One end of the electromagnetic component is connected to the power supply ends of the two groups of batteries, and the other end of the electromagnetic component is connected to the switching mechanism 332. By pushing the switching mechanism 332, different batteries are connected to the circuit.

[0069] Specifically, the electromagnetic component includes an iron core 3311 and a coil 3312. The wires forming the coil 3312 are led out from both ends of the electromagnetic component.

[0070] The two groups of batteries are a positive battery 3313 and a negative battery 3314 respectively. The positive battery 3313 and the negative battery 3314 mean that when they are connected to the circuit, the current directions in the circuit are opposite. When the switching mechanism 332 is switched to connect to the positive battery 3313, the magnetic force generated by the electromagnetic component is opposite to the magnetic force of the inner clamping plate 322, so as to increase the attraction force between the outer clamping plate 321 and the inner clamping plate 322, so that when the fire extinguishing bomb 400 has a large centrifugal force, it will not break away from the outer clamping plate 321 and the inner clamping plate 322. When the switching mechanism 332 is switched to connect to the negative battery 3314, the magnetic force generated by the electromagnetic component is the same as the magnetic force of the outer clamping plate 321, and the repulsive force generated between the electromagnetic component and the outer clamping plate 321 is greater than the attraction force between the outer clamping plate 321 and the inner clamping plate 322, so as to drive the inner clamping plate 322 to move away from the outer clamping plate 321.

[0071] The switching mechanism 332 includes a guiding component, two contact pieces 3321, and a transmission structure 3322. The transmission structure 3322 is used to push the guiding component to horizontally displace to drive the guiding component to contact different contact pieces 3321;

[0072] The guiding component includes a guiding plate 3323, an arc-shaped bent piece 3324, and a triggering piece 3325. The guiding plate 3323 is parallel to the output end of the transmission structure 3322. The arc-shaped bent piece 3324 penetrates through the guiding plate 3323 and is guided by the guiding plate 3323. The triggering piece 3325 is located at the end of the arc-shaped bent piece 3324. The transmission structure 3322 pushes the arc-shaped bent piece 3324 to drive the triggering piece 3325 to move on the straight line where the two contact pieces 3321 are located.

[0073] There are two sets of guide plates 3323 which are parallel to each other. The two sets of guide plates 3323 are fixed to the outer wall of the inner clamping plate 322 and engage with the arc-shaped bent pieces 3324.

[0074] There are two sets of trigger pieces 3325, and the two sets of trigger pieces 3325 are respectively connected to two sets of batteries.

[0075] The two sets of batteries are installed inside the arc-shaped bent pieces 3324, and the positions of the two sets of batteries are fixed by the arc-shaped bent pieces 3324.

[0076] The inner clamping plate 322 and the outer clamping plate 321 have the same structure. A layer of thick silicone is applied to the surfaces of the inner clamping plate 322 and the outer clamping plate 321. The inner clamping plate 322 and the outer clamping plate 321 clamp the fire extinguishing bomb 400, so that the thick silicone deforms, and there is more contact area between the thick silicone and the fire extinguishing bomb 400, and it is difficult for the fire extinguishing bomb 400 to break away from the clamping seat 320 under the action of centrifugal force.

[0077] Specifically, when the shaft disc 310 does not rotate, it magnetically attracts the inner clamping plate 322 to move towards the outer clamping plate 321 through the magnetic force generated by itself, and then clamps the fire extinguishing bomb 400. Since the diameter of the fire extinguishing bomb 400 is greater than the clamping width when the inner clamping plate 322 and the outer clamping plate 321 are in contact, the inner clamping plate 322 and the outer clamping plate 321 do not fit together at this time.

[0078] The transmission structure 3322 is configured as an electric cylinder. The output end of the electric cylinder pushes the arc-shaped bent piece 3324 to move so that the trigger piece 3325 contacts the contact piece 3321, so that the forward battery 3313 or the reverse battery 3314 is connected to the circuit.

[0079] When the shaft disc 310 starts to rotate, the electric cylinder is used to push the arc-shaped bent piece 3324 so that a set of trigger pieces 3325 are displaced forward to contact the contact piece 3321, and the forward battery 3313 is connected to the circuit.

[0080] When the switching mechanism 332 is switched to connect to the forward battery 3313, the magnetism generated by the electromagnetic component is opposite to the magnetism of the inner clamping plate 322, and the attraction between the outer clamping plate 321 and the inner clamping plate 322 is enhanced, and the high-speed moving fire extinguishing bomb 400 is firmly clamped by the outer clamping plate 321 and the inner clamping plate 322.

[0081] When the receiving plate 720 on the driven clamping seat 320 receives the laser signal of the transmitting plate 710 and the speed of the clamping seat 320 reaches the throwing speed, the electric cylinder is used to push the arc-shaped bent piece 3324 to displace in the reverse direction so that the other set of trigger pieces 3325 contact the contact piece 3321, and the reverse battery 3314 is connected to the circuit.

[0082] When the switching mechanism 332 switches and connects to the reverse battery 3314, the magnetism generated by the electromagnetic component is the same as that of the outer clamping plate 321. The repulsive force generated between the electromagnetic component and the outer clamping plate 321 is greater than the attractive force between the outer clamping plate 321 and the inner clamping plate 322, driving the inner clamping plate 322 to move away from the outer clamping plate 321. There is no clamping force between the outer clamping plate 321 and the inner clamping plate 322, and the inner clamping plate 322 and the outer clamping plate cannot clamp the fire extinguishing bomb 400.

[0083] By using the current magnetic effect to change the clamping force between the inner clamping plate 322 and the outer clamping plate 321 to clamp or release the fire extinguishing bomb 400, the electromagnetic component and the switching mechanism 332 are relatively simple and do not require complex mechanical devices to increase the load of the drone. In addition, by switching the current direction in the circuit, the magnetism of the electromagnetic component can be quickly changed to achieve quick clamping or releasing. At the same time, in cooperation with the triggering mechanism 700, the fire extinguishing bomb 400 can be released at a fixed point and at a fixed speed to ensure the accuracy of the throwing position of the fire extinguishing bomb 400.

[0084] Embodiment 3

[0085] Referring to Figures 7 to 10 As shown, this is the third embodiment of the present invention. Based on the previous embodiment, the difference is as follows:

[0086] The release structure 330 further includes a telescopic component 333. The telescopic component 333 is arranged between the outer clamping plate 321 and the inner clamping plate 322 and is used to drive the inner clamping plate 322 to move away from the outer clamping plate 321. The telescopic component 333 includes a guide rod 3331 and a telescopic unit. The guide rod 3331 is fixed on the surface of the outer clamping plate 321 and extends through the inner clamping plate 322 to drive the inner clamping plate 322 to move directionally along the guide rod 3331.

[0087] The telescopic unit includes a support rod 3334 and a spring 3332. The spring 3332 is sleeved on the support rod 3334. The support rod 3334 is fixed on the outer clamping plate 321, and a through hole 3333 for the support rod 3334 to penetrate is provided on the inner clamping plate 322.

[0088] The length of the support rod 3334 is short, which is only convenient for installing the spring 3332 between the inner clamping plate 322 and the outer clamping plate 321.

[0089] A guide groove 311 for the movement of the inner clamping plate 322 is provided on the shaft disc 310. Under the guidance of the guide rod 3331 and the guide groove 311, the inner clamping plate 322 moves directionally.

[0090] Specifically, when the inner clamping plate 322 and the outer clamping plate 321 clamp the fire extinguishing bomb 400, the spring 3332 is in a compressed state and stores energy.

[0091] When the inner clamping plate 322 and the outer clamping plate 321 release the fire extinguishing bomb 400, the energy-stored spring 3332 generates a reaction force. The repulsive force generated between the electromagnetic assembly and the outer clamping plate 321 is greater than the attractive force between the outer clamping plate 321 and the inner clamping plate 322. The repulsive force and the elastic force jointly resist the centrifugal force of the inner clamping plate 322 and drive the inner clamping plate 322 to move away from the outer clamping plate 321. The distance between the inner clamping plate 322 and the outer clamping plate 321 increases, and the energy-stored spring 3332 is released instantaneously, generating a thrust and a reaction force. The thrust acts on the inner clamping plate 322 to cause the inner clamping plate 322 to move away from the outer clamping plate 321. The support rod 3334 disengages from the through hole 3333 of the inner clamping plate 322, creating a spatial condition for the spring 3332 to disengage. The reaction force acts on the spring 3332 itself, causing the spring 3332 to generate a bouncing force, and then the spring 3332 pops out from between the inner clamping plate 322 and the outer clamping plate 321.

[0092] Among them, the spring 3332 is not fixedly connected to the outer clamping plate 321 or the inner clamping plate 322

[0093] When the fire extinguishing bomb 400 on the driven clamping seat 320 is released, the electric cylinder is used to push the arc-shaped bent piece 3324 back to its original position. Neither the positive battery 3313 nor the reverse battery 3314 is connected to the circuit. The inner clamping plate 322 is attracted by the outer clamping plate 321, and due to the centrifugal force acting on the inner clamping plate 322, the inner clamping plate 322 is driven to move towards the outer clamping plate 321, and the inner clamping plate 322 and the outer clamping plate 321 are in contact with each other.

[0094] At this time, for the clamping seat 320 that releases the fire extinguishing bomb 400, due to the change in the position of the inner clamping plate 322, the center of gravity of this group of clamping seats 320 moves away from the suspension shaft 200, reducing the center of gravity offset caused by the throwing of the fire extinguishing bomb 400 being thrown out, effectively improving the stability and balance of the drone during the throwing process, and also reducing the flight attitude instability caused by the center of gravity offset, ensuring the continuous stability and safety of the drone when performing multiple throwing tasks.

[0095] Embodiment 4

[0096] Refer to Figures 1 to 4 As shown, this is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment. The difference is that this embodiment provides a multi-rotor fire extinguishing bomb throwing drone: including a drone body 100, a throwing system, and a suspension rod 110. The drone body 100 suspends the throwing system through the suspension rod 110.

[0097] The suspension rod 110 extends from the shell of the drone body 100 and is flange-connected to the upper shaft body 210.

[0098] Principle: The UAV body 100 suspends the throwing system through the boom 110. The throwing system includes a suspension shaft 200 and a throwing structure 300. A throwing box 500 is fixed at the bottom of the suspension shaft 200. A throwing track 510 is provided in the throwing box 500 for guiding the fire extinguishing bomb 400 to be thrown along a predetermined track.

[0099] The suspension shaft 200 is divided into an upper shaft body 210 and a lower shaft body 220. The throwing box 500 is fixed at the bottom of the lower shaft body 220, and the lower shaft body 220 is hoisted inside the upper shaft body 210. A shaft disc 310 is fixed on the surface of the lower shaft body 220, and a clamping seat 320 is coaxially assembled on the shaft disc 310.

[0100] The driving structure 600 includes a driving motor 620 and an annular gear 610. The driving motor 620 meshes with the annular gear 610 through a driving gear 630 to drive the annular gear 610 to rotate. The annular gear 610 is fixed on the surface of the lower shaft body 220. When the annular gear 610 rotates, the lower shaft body 220 and the shaft disc 310 rotate synchronously.

[0101] The rotation of the shaft disc 310 drives the clamping seat 320 to rotate synchronously. The outer clamping plate 321 and the inner clamping plate 322 in the clamping seat 320 clamp the fire extinguishing bomb 400 through magnetic attraction. The clamping seat 320 accelerates and rotates with the shaft disc 310 until it reaches the preset throwing speed and then continues to rotate at a constant speed.

[0102] During this process, the battery direction of the access circuit is switched through the switching mechanism 332 so that the electromagnetic component generates magnetism. When the forward battery 3313 is connected, the magnetism generated by the electromagnetic component is opposite to the magnetism of the inner clamping plate 322 to increase the clamping force between the outer clamping plate 321 and the inner clamping plate 322 and ensure the stability of the fire extinguishing bomb 400.

[0103] When the receiving plate 720 on the marked clamping seat 320 receives the laser signal, the battery direction of the access circuit is switched through the switching mechanism 332 to change the magnetism of the electromagnetic component. When switched to the reverse battery 3314, the magnetism generated by the electromagnetic component is the same as the magnetism of the outer clamping plate 321, generating a repulsive force to drive the inner clamping plate 322 to resist its own centrifugal force.

[0104] At the same time, the spring 3332 in the telescopic component 333 stores energy in the compressed state. When the attraction between the inner clamping plate 322 and the outer clamping plate 321 is overcome, the spring 3332 quickly returns to its original state, generating a thrust to push the inner clamping plate 322 away from the outer clamping plate 321. The released spring 3332 bounces and then pops out between the inner clamping plate 322 and the outer clamping plate 321, completely releasing the fire extinguishing bomb 400.

[0105] After the fire extinguishing bomb 400 is released, the electric cylinder is used to push the arc-shaped bending piece 3324 to reset. Neither the forward battery 3313 nor the reverse battery 3314 is connected to the circuit. The inner clamping plate 322 is subjected to the gravitational force of the outer clamping plate 321 and its own centrifugal force. The inner clamping plate 322 moves closer to the outer clamping plate 321 until it fits the outer clamping plate 321.

[0106] At this time, the position of the inner clamping plate 322 is farther from the suspension axis 200 relative to the original position. The center of gravity of this set of clamping seats 320 is far from the suspension axis 200, increasing the moment of the clamping seat 320 reaching the suspension axis 200, reducing the center of gravity offset caused by the throwing of the fire extinguishing bomb 400, effectively improving the stability and balance of the drone during the throwing process, reducing the flight attitude instability caused by the center of gravity offset, and ensuring the continuous stability and safety of the drone when performing multiple throwing tasks.

[0107] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not limitations. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A throwing system for a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle, characterized in that, Including: A suspension shaft (200) with a throwing box (500) fixed to its bottom and a throwing track (510) provided along the radial direction of the throwing box (500); A throwing structure (300) including a clamping structure and a shaft disc (310). The clamping structure includes a clamping seat (320) and a release structure (330). The release structure (330) is used to drive the clamping seat (320) to release the fire extinguishing bomb (400). The clamping seat (320) is coaxially assembled on the shaft disc (310), and the shaft disc (310) is coaxially assembled on the suspension shaft (200). The shaft disc (310) is driven by an external force to rotate along the central axis of the suspension shaft (200), and the rotating shaft disc (310) cooperates with the clamping seat (320) to throw the fire extinguishing bomb (400) along the direction of the throwing track (510); The number of the clamping seats (320) is multiple groups, and the multiple groups of clamping seats (320) are circumferentially distributed at equal intervals on the shaft disc (310). The clamping seat (320) is configured as an outer clamping plate (321) and an inner clamping plate (322), and the outer clamping plate (321) and the inner clamping plate (322) move towards or away from each other to clamp or release the fire extinguishing bomb (400); The outer clamping plate (321) and the inner clamping plate (322) are symmetrically arranged. The inner clamping plate (322) is attracted by magnetic force to move towards the outer clamping plate (321) to clamp the fire extinguishing bomb (400). The radius of the fire extinguishing bomb (400) is greater than the clamping width when the inner clamping plate (322) and the outer clamping plate (321) are in contact; The release structure (330) includes an electromagnetic attraction structure (331) and a switching mechanism (332). The electromagnetic attraction structure (331) is assembled inside the inner clamping plate (322). The electromagnetic attraction structure (331) is used to generate the same or opposite magnetism as the outer clamping plate (321) to increase or eliminate the clamping force between the outer clamping plate (321) and the inner clamping plate (322). The switching structure is used to switch the circuit accessed by the electromagnetic attraction structure (331) to change the current in the circuit; The switching structure includes a guiding component, two contact pieces (3321) and a transmission structure (3322). The transmission structure (3322) is used to push the guiding component to horizontally displace so as to drive the guiding component to contact different contact pieces (3321); The guiding component includes a guiding plate (3323), an arc-shaped bent piece (3324) and two groups of trigger pieces (3325). The trigger pieces (3325) are located at the end of the arc-shaped bent piece (3324), and the two groups of trigger pieces (3325) are respectively connected to two groups of batteries. The transmission structure (3322) pushes the arc-shaped bent plate so that the trigger pieces (3325) contact the contact pieces (3321) to change the current direction in the electromagnetic component.

2. The throwing system of the multi-rotor fire extinguishing bomb throwing drone according to claim 1, characterized in that: The suspension shaft (200) includes a coaxial upper shaft body (210) and a lower shaft body (220). The throwing box (500) is fixed to the bottom end of the upper shaft body (210). The lower shaft body (220) is hoisted inside the upper shaft body (210), and the shaft disc (310) is fixed to the surface of the lower shaft body (220). A driving structure (600) is provided on the suspension shaft (200), which includes a driving unit and an annular gear (610). The annular gear (610) is coaxially arranged with the lower shaft body (220) and fixed to the surface of the lower shaft body (220). The driving unit drives the annular gear (610) to rotate to drive the outer shaft and the shaft disc (310) to rotate.

3. The throwing system of the multi-rotor fire extinguishing bomb throwing drone according to claim 2, characterized in that: A set of trigger mechanisms (700) are arranged along the direction of the throwing track (510). The trigger mechanisms (700) include a transmitting plate (710), a receiving plate (720), and a handheld remote control (730). The transmitting plate (710) emits laser light, which is received by the receiving plate (720) arranged outside the outer clamping seat (320). Multiple groups of the clamping seats (320) are numbered and input into the handheld remote control (730), and are individually driven and marked through the handheld remote control (730). The release structure (330) is configured in a release state. When the receiving plate (720) on the clamped seat (320) that is driven and marked receives the laser signal from the transmitting plate (710), and the speed of the clamping seat (320) reaches the throwing speed, the release structure (330) drives the left clamping plate and the right clamping plate to move away from each other to release the fire extinguishing bomb (400).

4. The throwing system of the multi-rotor fire extinguishing bomb throwing drone according to claim 3, wherein: The electromagnetic suction structure (331) includes an electromagnetic component and two groups of batteries. One end of the electromagnetic component is connected to the power supply terminals of the two groups of batteries, and the other end of the electromagnetic component is connected to the switching mechanism (332). Different batteries are connected to the circuit by pushing the switching mechanism (332).

5. The throwing system of the multi-rotor fire extinguishing bomb throwing drone according to claim 4, characterized in that: The release structure (330) further includes a telescopic component (333). The telescopic mechanism is arranged between the outer clamping plate (321) and the inner clamping plate (322) and is used to drive the inner clamping plate (322) to move away from the outer clamping plate (321). The telescopic component (333) includes a guide rod 3331 and a telescopic unit. The guide rod 3331 is fixed to the surface of the outer clamping plate (321) and extends through the inner clamping plate (322) to drive the inner clamping seat (320) to move directionally along the guide rod 3331. The telescopic unit includes a support rod 3334 and a spring (3332). The spring (3332) is sleeved on the support rod 3334. The support rod 3334 is fixed to the outer clamping plate (321), and a through hole (3333) for the support rod 3334 to pass through is provided on the inner clamping plate (322).

6. A multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle, based on the throwing system of the multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle according to any one of claims 1-5, characterized in that: It includes a drone body (100), a throwing system, and a suspension rod (110). The drone body (100) suspends the throwing system through the suspension rod (110).

7. The multi-rotor fire extinguishing bomb throwing drone and throwing system according to claim 6, characterized in that: The suspension rod (110) is led out from the inside of the housing of the UAV body (100) and is flange-connected to the upper shaft body (210).

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