Multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle and throwing system

Abstract

The invention discloses a multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle and a throwing system, and relates to the technical field of unmanned aerial vehicles, the multi-rotor fire extinguishing bomb throwing unmanned aerial vehicle comprises a throwing structure, the throwing structure comprises a clamping structure and a shaft disc, the clamping structure comprises a clamping seat and a releasing structure, the releasing structure is used for driving the clamping seat to release a fire extinguishing bomb, the clamping seat is coaxially assembled on the shaft disc, and the clamping seat is coaxially assembled on the shaft disc; the shaft disc is coaxially assembled on the suspension shaft, the shaft disc is driven by external force to rotate along a central shaft of the suspension shaft, the rotating shaft disc is matched with the clamping seat to throw a fire extinguishing bomb in the direction of the throwing track, the shaft disc is driven by external force to rotate along the central shaft of the suspension shaft, and the rotating shaft disc is matched with the clamping seat to throw the fire extinguishing bomb in the direction of the throwing track. The fire extinguishing bomb is driven to be thrown out at a certain initial speed, so that the fire extinguishing bomb generates a certain displacement in the horizontal direction, and the fire extinguishing bomb generating the horizontal distance can penetrate through a window or other openings of a building to accurately enter a room so as to adapt to different building structures and fire scenes.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, in particular to a multi-rotor fire-fighting 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 and low rescue efficiency.

[0003] A Chinese patent with authorization announcement number CN220786122U discloses a multi-rotor fire-fighting fire-extinguishing bomb-casting drone, including a drone body and multiple arms arranged around the drone body, a propeller is arranged at one end of the arm away from the drone body, a tripod is connected to the lower end surface of the drone body, and the drone body is fixedly provided with one or more guide tubes for placing fire-extinguishing bombs. The guide tubes are connected from top to bottom and the upper part extends to the top of the drone body, and the lower part of the guide tubes extends to the bottom of the drone body. A casting baffle is arranged below the guide tube, and one side of the casting baffle is installed on the tripod. The casting baffle is laid flat and locked to support the fire-extinguishing bomb, and the casting baffle is unlocked and flipped down to be used for casting the fire-extinguishing bomb. The drone body is fixedly provided with one or more guide tubes for placing fire-extinguishing bombs, the guide tubes are connected from top to bottom and the upper part extends to the top of the drone fuselage, and the lower part of the guide tubes extends to the bottom of the drone fuselage. The design of the guide tube running through the UAV fuselage makes the aircraft more compact as a whole, and the fire extinguishing bombs can be placed directly from the top of the aircraft, which is convenient for on-site placement of the fire extinguishing bombs and eliminates the cumbersome downward-hanging fire extinguishing bombs. Secondly, the guide tube can be adapted to various specifications and models of fire extinguishing bombs on the market and can carry two 28kg fixed-height fire extinguishing bombs.

[0004] With the acceleration of urbanization, there are more and more high-rise buildings, and the risk of fire accidents is also increasing. Traditional ground fire-fighting equipment has many limitations when dealing with high-rise building fires, such as difficulty in reaching the source of the fire and low rescue efficiency. The traditional drone throwing system still has some shortcomings. For example, the throwing method mostly uses a catapult, which pushes the fire-extinguishing bomb through a spring or gas. Although it is simple, there are problems such as large reaction force when used on drones, which can easily affect the flight stability of the drone. Some other existing drone throwing systems use mechanical clamping devices to release fire-extinguishing bombs through motor-driven clamping arms, but these devices have complex structures and heavy weights, which increase the burden on drones.

[0005] To this end, the present invention proposes a multi-rotor fire-fighting bomb throwing drone and a throwing system to solve the above-mentioned problems. Summary of the invention

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

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a throwing system of a multi-rotor fire-fighting bomb throwing drone, which comprises:

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

[0009] The throwing structure includes a clamping structure and a shaft disc, wherein the clamping structure includes a clamping seat and a releasing structure, wherein the releasing structure is used to drive the clamping seat to release the fire extinguishing bomb, wherein the clamping seat is coaxially mounted on the shaft disc, wherein the shaft disc is coaxially mounted on the suspension shaft, wherein the shaft disc is driven by an external force to rotate along the central axis of the suspension shaft, and wherein 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-fighting 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 to the bottom end of the lower shaft body, the lower shaft body is hoisted in the upper shaft body, and the shaft disc is fixed to the surface of the lower shaft body;

[0011] The driving structure arranged on the suspension shaft includes a driving unit and a ring gear. The ring gear is coaxially arranged with the lower shaft body and fixed to the surface of the lower shaft body. The driving unit drives the ring 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-fighting bomb throwing drone described in the present invention, the number of the clamping seats is multiple groups, and the multiple groups of clamping seats are circumferentially distributed on the shaft disk at equal intervals, and the clamping seats are configured as an outer clamping plate and an inner clamping plate, and the outer clamping plate and the inner clamping plate move toward 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-fighting bomb throwing drone of the present invention, a group of trigger mechanisms are provided along the throwing track direction, and the trigger mechanisms include a launching board, a receiving board and a handheld remote controller;

[0014] The transmitting plate transmits laser light, which is received by the receiving plate disposed outside the clamping seat;

[0015] A plurality of groups of the clamping seats are numbered and input into a handheld remote controller, and are individually driven by the handheld remote controller;

[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 casting speed, the release structure drives the left clamping plate and the right clamping plate to move backwards to release the fire extinguishing bomb.

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

[0018] The release structure includes an electromagnetic suction structure and a switching mechanism. The electromagnetic suction structure is assembled in the inner clamping plate. The electromagnetic suction 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 to which the electromagnetic suction structure is connected to change the current in the circuit.

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

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

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

[0022] As a preferred solution of the throwing system of the multi-rotor fire-fighting bomb throwing drone of 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 guide rod and a telescopic unit, the guide rod is fixed to the surface of the outer clamping plate and extends through the inner clamping plate to drive the inner clamping plate to move in a directional manner along the guide rod;

[0023] The telescopic unit comprises a support rod and a spring, wherein 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 pass through is opened on the inner clamping plate.

[0024] A multi-rotor fire-fighting bomb-casting drone comprises a drone body, a casting system and a suspension rod, wherein the drone body suspends the casting system through the suspension rod.

[0025] As a preferred solution of the multi-rotor fire-fighting bomb-casting drone of the present invention, the boom is led out from the shell of the drone body and is connected to the upper shaft body in a flange manner.

[0026] The beneficial effects of the present invention are as follows: the throwing system of the present invention comprises a suspension shaft and a throwing structure, the throwing structure comprises a shaft disc, a clamping seat and a releasing 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 at a certain initial velocity, so that the fire extinguishing bomb produces 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 scenes; secondly, the method of rotating and throwing the fire extinguishing bomb is to use centrifugal force to throw the fire extinguishing bomb, and the fire extinguishing bomb will not give the drone obvious reaction force during the throwing process, thereby ensuring the stability and controllability of the flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

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

[0029] Figure 2 A bottom view of the overall structure of a multi-rotor fire-fighting 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 structural detail 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 of 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 for Figure 7 A magnified view of the structure of part A;

[0036] Fig. 9 The overall structure of the release structure of the present invention is shown in FIG. Figure 1 ;

[0037] Fig.10 The overall structure of the release structure of the present invention is shown in FIG. Figure 2 .

[0038] Figure numerals: 100, drone body; 110, boom; 200, suspension shaft; 210, upper shaft; 220, lower shaft; 300, casting structure; 310, shaft disc; 311, guide 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 sheet; 3322, transmission Structure; 3323, guide plate; 3324, arc-shaped bent piece; 3325, trigger piece; 333, telescopic assembly; 3331, guide rod; 3332, spring; 3333, through hole; 3334, support rod; 400, fire extinguishing bomb; 500, throwing box; 510, throwing track; 600, driving structure; 610, ring gear; 620, driving motor; 630, driving gear; 700, trigger mechanism; 710, launching plate; 720, receiving plate; 730, handheld remote control; 800, mounting plate. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] Reference Figure 1 to Figure 5 As shown, it is the first embodiment of the present invention, which provides a throwing system of a multi-rotor fire-fighting bomb throwing drone, including a suspension shaft 200 and a throwing structure 300:

[0044] The hanging shaft 200 has a throwing box 500 fixed at the bottom thereof, 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 throwing angle, and fly out along a predetermined throwing trajectory, thereby achieving accurate throwing.

[0045] The throwing structure 300 includes a clamping structure and a shaft disk 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 disk 310. The shaft disk 310 is coaxially assembled on the suspension shaft 200. The shaft disk 310 is driven by external force to rotate along the central axis of the suspension shaft 200. The rotating shaft disk 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 suspended in the upper shaft body 210, and the shaft disc 310 is fixed to the surface of the lower shaft body 220;

[0047] The driving structure 600 disposed on the suspension shaft 200 includes a driving unit and a ring gear 610. The ring 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 ring gear 610 to rotate to drive the lower shaft body 220 and the shaft disk 310 to rotate.

[0048] Specifically, the driving unit includes a driving motor 620 and a driving gear 630 located at an output end of the driving motor 620 , and the driving gear 630 is meshed with the ring gear 610 .

[0049] A mounting plate 800 is fixed to one end of the upper shaft 210 close to the lower shaft 220. The mounting plate 800 is used to fix the drive motor 620. The fixed drive motor 620 is used to drive the ring gear 610 to rotate. The drive motor 620 drives the drive gear 630 to engage with the ring gear 610 to drive the ring gear 610 to rotate.

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

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

[0052] There are multiple groups of clamping seats 320, which are evenly spaced and circumferentially distributed on the shaft disk 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 toward or away from each other to clamp or release the fire extinguishing bomb 400.

[0053] A set of trigger mechanisms 700 is provided along the casting track 510, and the trigger mechanism 700 includes a launch plate 710, a receiving plate 720 and a handheld remote controller 730;

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

[0055] Multiple groups of clamping seats 320 are numbered and input into the handheld remote controller 730, and are driven individually by the handheld remote controller 730;

[0056] The release structure 330 is configured with a release 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 casting speed, the release structure 330 drives the left clamping plate and the right clamping plate to move backwards to release the fire extinguishing bomb 400.

[0057] Specifically, the throwing box 500 is fixed on the bottom of the upper shaft 210, synchronizing the movement of the upper shaft 210 and the drone. Due to the irregular annular box structure of the throwing box 500, a structure with different materials is adopted to drive the center of gravity of the throwing system 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, wherein a throwing box 500 is fixed to the bottom of the lower shaft body 220, and the lower shaft body 220 is suspended in the upper shaft body 210, and the shaft disc 310 is fixed to the surface of the lower shaft body 220, and the shaft disc 310 is driven by an external force to rotate along the central axis of the suspension shaft 200. The driving structure 600 is located on the suspension shaft 200, and the driving structure 600 is composed of a driving unit and a ring gear 610. The driving unit includes a driving motor 620 and a driving gear 630. The driving motor 620 drives the ring gear 610 to rotate through the meshing action of the driving gear 630 and the ring gear 610, thereby driving 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 rotates together with it, and the clamping seat 320 accelerates with the shaft disc 310 until it reaches a preset casting speed and then rotates at a constant speed.

[0060] When it is necessary to throw the fire extinguishing bomb 400, the clamping seat 320 that needs to be driven is remotely driven by the handheld remote control 730, and the clamping seat 320 follows the shaft disk 310 to rotate evenly at the throwing speed. When the laser signal emitted by the transmitting 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 backwards, thereby releasing the fire extinguishing bomb 400.

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

[0062] The rotating projectile fire extinguishing bomb 400 ensures that the fire extinguishing bomb 400 has a certain initial velocity when it is thrown out. The fire extinguishing bomb 400 with a certain initial velocity is thrown along the throwing track 510, so that the fire extinguishing bomb 400 has 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 scenes.

[0063] The method of rotating and projecting the fire extinguishing bomb 400 is to use centrifugal force to throw the fire extinguishing bomb 400, rather than relying on the catapult to eject it, that is, it does not rely on the traditional recoil force of the ejection, which means that the fire extinguishing bomb 400 will not give the drone obvious reaction force during the throwing process, thereby ensuring the stability and controllability of the flight.

[0064] Example 2

[0065] Reference Figures 5 to 10 FIG. 2 is a second embodiment of the present invention, which is based on the previous embodiment, except that:

[0066] The outer clamping plate 321 and the inner clamping plate 322 are symmetrically arranged, and the inner clamping plate 322 is attracted by magnetic attraction to move toward the outer clamping plate 321 to clamp the fire extinguishing bomb 400. The diameter of the fire extinguishing bomb 400 is larger than the width of the inner clamping plate 322 and the outer clamping plate 321 when they are attached to 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 in 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 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 and change the current in the circuit, thereby driving the electromagnetic attraction structure 331 to generate two opposite magnetisms.

[0068] 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 end of the two groups of batteries, and the other end of the electromagnetic component is connected to the switching mechanism 332. Different batteries can be connected to the circuit by pushing the switching mechanism 332.

[0069] Specifically, the electromagnetic assembly includes an iron core 3311 and a coil 3312 , and the wire constituting the coil 3312 is led out from both ends of the electromagnetic assembly.

[0070] The two groups of batteries are respectively a forward battery 3313 and a reverse battery 3314. When the forward battery 3313 and the reverse battery 3314 are connected to a circuit, the current directions in the circuit are opposite. When the switching mechanism 332 is switched to the forward battery 3313, the magnetism generated by the electromagnetic component is opposite to the magnetism of the inner clamping plate 322, so as to increase the attraction between the outer clamping plate 321 and the inner clamping plate 322, so that the outer clamping plate 321 and the inner clamping plate 322 firmly clamp the fire extinguishing bomb 400, so that the fire extinguishing bomb 400 does not separate from the outer clamping plate 321 and the inner clamping plate 322 even when the fire extinguishing bomb 400 has a large centrifugal force. When the switching mechanism 332 is 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, and the repulsive force generated between the electromagnetic component and the outer clamping plate 321 is greater than the attraction 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 guide assembly, two contact pieces 3321 and a transmission structure 3322, wherein the transmission structure 3322 is used to push the guide assembly to move horizontally so as to drive the guide assembly to contact different contact pieces 3321;

[0072] The guide assembly includes a guide plate 3323, an arcuate bent piece 3324 and a trigger piece 3325. The guide plate 3323 is parallel to the output end of the transmission structure 3322. The arcuate bent piece 3324 passes through the guide plate 3323 and is guided by the guide plate 3323. The trigger piece 3325 is located at the end of the arcuate bent piece 3324. The transmission structure 3322 pushes the arcuate bent piece 3324 to drive the trigger piece 3325 to move on the straight line where the two contact pieces 3321 are located.

[0073] The guide plates 3323 are in two sets and 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 groups of trigger sheets 3325, and the two groups of trigger sheets 3325 are connected to two groups of batteries respectively.

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

[0076] The structures of the inner clamping plate 322 and the outer clamping plate 321 are consistent. A layer of thick silicone is applied on the surface 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 to deform the thick silicone. This allows more contact area between the thick silicone and the fire extinguishing bomb 400, making it difficult for the fire extinguishing bomb 400 to separate from the clamping seat 320 under the action of centrifugal force.

[0077] Specifically, when the shaft disk 310 is not rotating, the magnetic force generated by itself attracts the inner clamping plate 322 to move toward the outer clamping plate 321, thereby clamping the fire extinguishing bomb 400. Since the diameter of the fire extinguishing bomb 400 is larger than the width of the clamping 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 are not in contact at this time.

[0078] The transmission structure 3322 is configured as an electric cylinder, and 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 group of trigger pieces 3325 are displaced in the positive direction and contact the contact piece 3321, and the positive battery 3313 is connected to the circuit.

[0080] When the switching mechanism 332 is switched to be connected to the positive battery 3313, the magnetism generated by the electromagnetic component is opposite to the magnetism of the inner clamping plate 322, 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 casting speed, the electric cylinder is used to push the arc-shaped bending piece 3324 to move in the opposite direction so that another 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 is switched and connected to the reverse battery 3314, the magnetism generated by the electromagnetic component is the same as the magnetism 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 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] The clamping force between the inner clamping plate 322 and the outer clamping plate 321 is changed by the magnetic effect of the electric current 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 weight of the drone. In addition, by switching the direction of the current in the circuit, the magnetism of the electromagnetic component can be quickly changed to achieve rapid clamping or release. At the same time, in cooperation with the trigger 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] Example 3

[0085] Reference Figures 7-10 FIG. 4 is a third embodiment of the present invention, which is based on the previous embodiment, except that:

[0086] The release structure 330 further includes a telescopic assembly 333, which is disposed 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 assembly 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 plate 322 to move in a directional manner 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 . A through hole 3333 for the support rod 3334 to pass through is opened on the inner clamping plate 322 .

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

[0089] A guide groove 311 for the inner clamping plate 322 to move 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 in a directional manner.

[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 the spring 3332 stores energy.

[0091] When the inner clamping plate 322 and the outer clamping plate 321 release the fire extinguishing bomb 400, the energy-storing spring 3332 generates a reaction force, and 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. 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-storing spring 3332 generates a reaction force. The spring 3332 is released in an instant, generating thrust and reaction. The thrust acts on the inner clamping plate 322 to make the inner clamping plate 322 move away from the outer clamping plate 321, and the support rod 3334 escapes from the through hole 3333 of the inner clamping plate 322, creating spatial conditions for the spring 3332 to escape. The reaction force acts on the spring 3332 itself, causing the spring 3332 to generate a bouncing force, and then the spring 3332 jumps out from between the inner clamping plate 322 and the outer clamping plate 321.

[0092] 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 to reset, and the positive battery 3313 and the reverse battery 3314 are not connected to the circuit. The inner clamping plate 322 is attracted by the outer clamping plate 321, and the inner clamping plate 322 is driven toward the outer clamping plate 321 due to the centrifugal force, so that the inner clamping plate 322 is in contact with 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, the group of clamping seats 320 that releases the fire extinguishing bomb 400 changes its position due to the change in the position of the inner clamping plate 322, which makes the center of gravity of this group of clamping seats 320 move away from the suspension shaft 200, reducing the center of gravity offset caused by the fire extinguishing bomb 400 being thrown out, effectively improving the stability and balance of the UAV during the throwing process, and reducing the unstable flight posture caused by the center of gravity offset, ensuring the continuous stability and safety of the UAV when performing multiple throwing tasks.

[0095] Example 4

[0096] Reference Figure 1 to Figure 4 As shown, it is the fourth embodiment of the present invention. This embodiment is based on the previous embodiment, but the difference is that this embodiment provides a multi-rotor fire-fighting bomb-dropping drone: it includes a drone body 100, a dropping system and a boom 110, and the drone body 100 suspends the dropping system through the boom 110.

[0097] The boom 110 is led out from the shell of the drone body 100 and is connected to the upper shaft body 210 in a flange manner.

[0098] Principle: The drone body 100 suspends the throwing system through the suspension rod 110, and 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, and a throwing track 510 is arranged in the throwing box 500 to guide 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. A throwing box 500 is fixed to the bottom of the lower shaft body 220, and the lower shaft body 220 is suspended in the upper shaft body 210. The shaft disc 310 is fixed on the surface of the lower shaft body 220, and the clamping seat 320 is coaxially assembled on the shaft disc 310.

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

[0101] The rotation of the shaft disc 310 drives the clamping seat 320 to rotate synchronously, and 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 rotates with the acceleration of the shaft disc 310 until it reaches a preset throwing speed, and then continues to rotate at a constant speed.

[0102] During this process, the direction of the battery connected to the circuit is switched by the switching mechanism 332 so that the electromagnetic component generates magnetism. When the positive battery 3313 is connected, the magnetism generated by the electromagnetic component is opposite to the magnetism of the inner clamping plate 322, so as to increase the clamping force between the outer clamping plate 321 and the inner clamping plate 322, thereby ensuring 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 direction of the battery connected to the circuit is switched through the switching mechanism 332, changing the magnetism of the electromagnetic assembly. When switching to the reverse battery 3314, the magnetism generated by the electromagnetic assembly is the same as the magnetism of the outer clamping plate 321, generating a repulsive force, driving the inner clamping plate 322 to resist its own centrifugal force.

[0104] At the same time, the spring 3332 in the telescopic assembly 333 stores energy in a 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, generates thrust, and pushes the inner clamping plate 322 away from the outer clamping plate 321. The released spring 3332 bounces and then jumps out from 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 bent piece 3324 to reset. The forward battery 3313 and the reverse battery 3314 are not connected to the circuit. The inner clamping plate 322 is affected by the gravitational force of the outer clamping plate 321 and the centrifugal force of the inner clamping plate 322 itself. The inner clamping plate 322 moves close to the outer clamping plate 321 until it fits against the outer clamping plate 321.

[0106] At this time, the position of the inner clamping plate 322 is farther away from the suspension shaft 200 relative to the original position. The center of gravity of this group of clamping seats 320 is far away from the suspension shaft 200, which increases the torque of the clamping seat 320 reaching the suspension shaft 200 and reduces the center of gravity offset caused by the fire extinguishing bomb 400 being thrown out. The stability and balance of the UAV during the throwing process are effectively improved, the unstable flight posture caused by the center of gravity offset is reduced, and the continuous stability and safety of the UAV when performing multiple throwing tasks are ensured.

[0107] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A throwing system for a multi-rotor fire-fighting bomb throwing drone, characterized in that: include: A hanging shaft (200) having a throwing box (500) fixed at the bottom thereof, and a throwing track (510) provided along the radial direction of the throwing box (500); A throwing structure (300) comprises a clamping structure and a shaft disc (310), wherein the clamping structure comprises a clamping seat (320) and a releasing structure (330), wherein the releasing structure (330) is used to drive the clamping seat (320) to release a fire extinguishing bomb (400), wherein the clamping seat (320) is coaxially mounted on the shaft disc (310), wherein the shaft disc (310) is coaxially mounted on a suspension shaft (200), wherein the shaft disc (310) is driven by an external force to rotate along the central axis of the suspension shaft (200), and wherein the rotating shaft disc (310) cooperates with the clamping seat (320) to throw the fire extinguishing bomb (400) along the direction of a throwing track (510).

2. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 1, characterized in that: The suspension shaft (200) comprises 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 suspended in the upper shaft body (210); and the shaft disc (310) is fixed to the surface of the lower shaft body (220); The driving structure (600) is arranged on the suspension shaft (200), and comprises a driving unit and a ring gear (610). The ring 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 ring gear (610) to rotate so as to drive the lower shaft body (220) and the shaft disc (310) to rotate.

3. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 2, characterized in that: The number of the clamping seats (320) is multiple groups, and the multiple groups of clamping seats (320) are circumferentially distributed on the shaft disk (310) at equal intervals. 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 toward or away from each other to clamp or release the fire extinguishing bomb (400).

4. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 3, characterized in that: A set of trigger mechanisms (700) is provided along the direction of the casting track (510), and the trigger mechanism (700) comprises a transmitting plate (710), a receiving plate (720) and a handheld remote controller (730); The transmitting plate (710) transmits laser light, which is received by a receiving plate (720) disposed outside the clamping seat (320); A plurality of groups of the clamping seats (320) are numbered and input into a handheld remote controller (730), and are driven individually by the handheld remote controller (730); The release structure (330) is configured with a release 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 casting speed, the release structure (330) drives the left clamping plate and the right clamping plate to move backwards to release the fire extinguishing bomb (400).

5. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 4, characterized in that: The outer clamping plate (321) and the inner clamping plate (322) are symmetrically arranged, and the inner clamping plate (322) is attracted by magnetic attraction to move toward the outer clamping plate (321) to clamp the fire extinguishing bomb (400), and the diameter of the fire extinguishing bomb (400) is greater than the width of the inner clamping plate (322) and the outer clamping plate (321) when they are attached to each other; The release structure (330) comprises an electromagnetic attraction structure (331) and a switching mechanism (332); the electromagnetic attraction structure (331) is assembled in 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 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 to which the electromagnetic attraction structure (331) is connected to change the current in the circuit.

6. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 5, characterized in that: The electromagnetic suction structure (331) comprises 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 a switching mechanism (332), and different batteries can be connected to the circuit by pushing the switching mechanism (332).

7. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 6, characterized in that: The switching mechanism (332) comprises a guide assembly, two contact sheets (3321) and a transmission structure (3322), wherein the transmission structure (3322) is used to push the guide assembly to shift horizontally so as to drive the guide assembly to contact different contact sheets (3321); The guide assembly comprises a guide plate (3323), an arc-shaped bent piece (3324) and two groups of trigger pieces (3325); the trigger pieces (3325) are located at the ends 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 piece (3324) so ​​that the trigger piece (3325) contacts the contact piece (3321) to change the direction of the current in the electromagnetic assembly.

8. The throwing system of the multi-rotor fire-fighting bomb throwing drone as claimed in claim 7, characterized in that: The release structure (330) further comprises a telescopic assembly (333), wherein the telescopic assembly (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), and the telescopic assembly (333) comprises a guide rod (3331) and a telescopic unit, wherein 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 plate (322) to move in a directional manner along the guide rod (3331); The telescopic unit comprises a support rod (3334) and a spring (3332), wherein 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 pass through is provided on the inner clamping plate (322).

9. A multi-rotor fire-fighting bomb throwing drone, characterized in that: The invention comprises an unmanned aerial vehicle body (100), a throwing system of a multi-rotor fire-fighting bomb throwing unmanned aerial vehicle as claimed in any one of claims 1 to 8, and a suspension rod (110), wherein the unmanned aerial vehicle body (100) suspends the throwing system through the suspension rod (110).

10. The multi-rotor fire-fighting bomb throwing drone according to claim 9, characterized in that: The suspension rod (110) is led out from the shell of the drone body (100) and is flange-connected to the upper shaft body (210).

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