Fire extinguishing bomb throwing device of multi-rotor fire-fighting unmanned aerial vehicle

Abstract

The invention discloses a fire extinguishing bomb throwing device of a multi-rotor fire-fighting unmanned aerial vehicle, and belongs to the field of fire extinguishing bomb throwing devices, the fire extinguishing bomb throwing device adopts a fire extinguishing ball loading structure in the form of a cartridge, fire extinguishing balls only need to be thrown into the cartridge one by one during loading, and the fire extinguishing balls do not need to be hung one by one by using corresponding hanging retaining ring parts or lock catch parts; meanwhile, according to the fire extinguishing ball throwing device, due to the fact that the fire extinguishing balls are directly thrown into the ammunition barrel to be loaded, other accessory structures do not need to be arranged on the outer surfaces of the ball shells of the fire extinguishing balls, regular production and manufacturing of the outer surfaces of the ball shells of the fire extinguishing balls are facilitated, and the manufacturing complexity is reduced.

Description

Technical Field

[0001] The present invention relates to the field of fire extinguishing bomb throwing devices, and more specifically, to a fire extinguishing bomb throwing device for a multi-rotor fire fighting drone. Background Art

[0002] With the rapid development of social economy, high-rise buildings, large warehouses and other places have emerged continuously, and fire rescue faces many new challenges. Multi-rotor fire fighting drones have become an important auxiliary tool for modern fire rescue due to their strong mobility, ability to quickly reach the fire scene, and ability to operate in complex environments. Among them, the fire extinguishing bomb throwing device, as a key component for multi-rotor fire fighting drones to achieve the fire extinguishing function, its performance directly affects the fire extinguishing effect.

[0003] Currently, the fire extinguishing bombs put into use can be generally divided into two categories according to their external structures: spherical fire extinguishing balls and bullet-shaped fire extinguishing bombs. For the existing fire extinguishing bomb throwing devices for fire extinguishing balls, although they are relatively convenient to use, in order to meet the needs of hanging, hanging buckles usually need to be provided on the fire extinguishing balls, and automatically openable lock buckles usually need to be provided on the fire extinguishing bomb throwing devices. When loading the ammunition, the fire extinguishing balls need to be hung on the corresponding lock buckles of the fire extinguishing bomb throwing device one by one through the hanging buckles. This not only increases the manufacturing complexity of the fire extinguishing ball shell, but also the loading form of hanging the fire extinguishing balls on the fire extinguishing bomb throwing device one by one is not conducive to improving the loading efficiency. Therefore, it is particularly necessary to develop a fire extinguishing bomb throwing device for a multi-rotor fire fighting drone that can load the fire extinguishing balls more quickly and conveniently and can reduce the complexity of the outer shell structure when the fire extinguishing balls are adapted for loading. Therefore, we propose a fire extinguishing bomb throwing device for a multi-rotor fire fighting drone to solve the above existing problems. Summary of the Invention

[0004] Technical problems to be solved: Regarding the problems existing in the prior art, the purpose of the present invention is to provide a fire extinguishing bomb throwing device for a multi-rotor fire fighting drone. It adopts a fire extinguishing ball loading structure in the form of a cartridge. When loading the ammunition, only the fire extinguishing balls need to be put into the cartridge one by one, without the need to hang the fire extinguishing balls one by one using the corresponding hanging buckles or lock buckles, which greatly improves the loading efficiency of the fire extinguishing balls. At the same time, for this kind of fire extinguishing bomb throwing device, since the fire extinguishing balls are directly put into the cartridge for loading, no other accessory structures need to be provided on the outer surface of the fire extinguishing ball shell, which is conducive to the regular production and manufacturing of the outer surface of the fire extinguishing ball shell and reduces the manufacturing complexity.

[0005] Technical solution: To solve the above problems, the present invention adopts the following technical solutions.

[0006] An extinguishing bomb throwing device for a multi-rotor fire-fighting drone, comprising a cartridge, the top of the cartridge is fixedly installed with an upper cover plate through bolts, and a guiding funnel is fixedly installed at the bottom of the inner wall of the cartridge through bolts. Jacks are provided on both sides of the cartridge at the bottom of the guiding funnel, and spring plunger mechanisms with the same structure are inserted into the two jacks; The spring plunger mechanism includes a housing inserted into the corresponding jack, a push rod is slidably connected inside the housing, a set of mounting nuts are threadedly connected to the housing at the connection of the jacks, and a first support spring is sleeved inside the housing. One end of the first support spring is in contact with one side of the inner wall of the housing and the other end of the push rod respectively. A contact pulley is fixedly installed at the other end of the push rod outside the housing. A set of limiting fins are fixedly welded to the outer wall of the push rod, and a set of limiting chutes are provided on the inner wall of the housing at the positions corresponding to the set of limiting fins. The limiting fins are slidably connected inside the corresponding limiting chutes; A contraction cavity is further provided inside the push rod, and a limiting post is slidably connected inside the contraction cavity. A second support spring is connected between the bottom of the limiting post and the bottom of the inner wall of the contraction cavity. A through hole is provided on the housing corresponding to the limiting post, and the top of the limiting post extends into the through hole.

[0007] Further, a ring is sleeved outside the cartridge, and a set of insertion posts are fixedly connected to the bottom of the ring. The bottom ends of the insertion posts extend into the corresponding through holes, and the bottom ends of the insertion posts are in contact with the top ends of the corresponding limiting posts.

[0008] Further, a set of lugs are fixedly connected to the top of the ring at the positions corresponding to the set of insertion posts. A set of micro electric cylinders are provided on the top of the lugs. The installation part at the top of the micro electric cylinder is fixedly installed on the outer wall of the cartridge through screws, and the end of the telescopic rod at the bottom of the micro electric cylinder is rotatably connected to the corresponding lug through a rivet.

[0009] Further, a push plate is slidably connected inside the cartridge. A third support spring is connected between the top of the push plate and the bottom of the upper cover plate. A set of dial rods are fixedly welded on the outer edge of the push plate. A set of stroke grooves are provided on the cartridge at the positions corresponding to the set of dial rods. The ends of the dial rods extend outside the cartridge through the corresponding stroke grooves. A number of fire extinguishing balls are filled between the push plate and the guiding funnel inside the cartridge. One of the fire extinguishing balls at the top is in contact with the bottom of the push plate, and one of the fire extinguishing balls at the bottom is in contact with the top of the pulley bodies of the two contact pulleys. The outer diameter of the fire extinguishing ball is equal to the inner diameter of the bottom opening of the guiding funnel.

[0010] Further, a bomb dropping hole is also formed on one side of the outer wall of the cartridge, and a sealing plate is fixedly installed on the bomb dropping hole through a plurality of quick-release bolts.

[0011] Further, a plurality of installation ends are fixedly welded on the upper cover plate. A multi-rotor fire fighting UAV body is arranged on the upper cover plate, and an installation plate is fixedly installed at the bottom of the multi-rotor fire fighting UAV body. The installation plate and the plurality of installation ends are fixedly installed through bolts.

[0012] Compared with the prior art, the advantages of the present invention are as follows: (1) In this solution, a loading structure for fire extinguishing balls in the form of a cartridge is adopted. When loading the fire extinguishing balls, it only needs to put the fire extinguishing balls into the cartridge one by one, without using corresponding hanging buckle parts or locking parts to hang the fire extinguishing balls one by one, which greatly improves the loading efficiency of the fire extinguishing balls. At the same time, for this kind of fire bomb throwing device, since the fire extinguishing balls are directly put into the cartridge for loading, no other auxiliary structures need to be arranged on the outer surface of the fire extinguishing ball shell, which is beneficial to the regular production and manufacturing of the outer surface of the fire extinguishing ball shell and reduces the manufacturing complexity; (2) In this solution, for the unlocking of the bottommost fire extinguishing ball during throwing, only need to control the ring to move down and reset once to control the unlocking of the connection between the push rod and the outer shell. At this time, as the bottommost fire extinguishing ball moves down, the contact pulleys and push rods of the two spring plunger mechanisms can be pushed open in the opposite direction, avoiding the throwing channel, and a bomb dropping can be successfully completed. When timely blocking the next bottommost fire extinguishing ball, during the process of the previous fire extinguishing ball being gradually thrown out, the top surface of the fire extinguishing ball gradually narrows, the supporting springs push the pair of push rods, and the contact pulleys are pushed out and reset in the opposite direction, so that the contact pulleys and push rods of the two spring plunger mechanisms can be reset to block the accidental pushing out of the next bottommost fire extinguishing ball. The whole process is coherent and reasonable, without the need to separately set an electric control blocking mechanism, which improves the convenience during production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the installation structure schematic diagram of the present invention; Figure 2 is the installation plate structure schematic diagram of the present invention; Figure 3 is the overall structure schematic diagram of the present invention; Figure 4 is the internal sectional structure schematic diagram of the cartridge of the present invention; Figure 5 is of the present invention Figure 4 partial area structure schematic diagram; Figure 6 is the push rod sectional structure schematic diagram of the present invention; Figure 7 is the split structure schematic diagram of the present invention; Figure 8 Schematic structural diagram of the spring plunger mechanism of the present invention; Figure 9 Schematic structural diagram of the ring structure of the present invention.

[0014] Description of the reference numerals in the figure: 1. Cartridge; 101. Jack; 102. Stroke groove; 103. Bomb throwing hole; 104. Sealing plate; 2. Upper cover plate; 201. Installation end; 3. Guide funnel; 4. Spring plunger mechanism; 5. Outer shell; 501. Limit sliding groove; 502. Through hole; 6. Push rod; 601. Limit fin; 602. Shrinkage cavity; 603. Limit pile; 604. Second support spring; 7. Installation nut; 8. First support spring; 9. Contact pulley; 10. Ring; 1001. Insertion post; 1002. Ear piece; 11. Micro electric cylinder; 12. Push plate; 1201. Poking rod; 13. Third support spring; 14. Fire extinguishing ball; 15. Multi-rotor fire fighting UAV body; 1501. Installation plate. Specific implementation mode

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention specification; obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] Embodiment 1: Please refer to Figures 1-9 , a fire extinguishing bomb throwing device for a multi-rotor fire fighting UAV, including a cartridge 1, the top of the cartridge 1 is fixedly installed with an upper cover plate 2 through bolts, and the bottom of the inner wall of the cartridge 1 is fixedly installed with a guide funnel 3 through bolts. Jacks 101 are opened on both sides of the cartridge 1 at the bottom of the guide funnel 3, and two spring plunger mechanisms 4 with the same structure are inserted into the two jacks 101; The spring plunger mechanism 4 includes an outer shell 5 inserted into the corresponding jack 101, a push rod 6 is slidably connected inside the outer shell 5, a set of installation nuts 7 are threadedly connected to the outer shell 5 at the connection of the jack 101, a first support spring 8 is sleeved inside the outer shell 5, and both ends of the first support spring 8 are respectively in contact with one side of the inner wall of the outer shell 5 and one end of the push rod 6. The other end of the push rod 6 outside the outer shell 5 is fixedly installed with a contact pulley 9, a set of limit fins 601 are fixedly welded to the outer wall of the push rod 6, and a set of limit sliding grooves 501 are opened on the inner wall of the outer shell 5 at the position corresponding to the set of limit fins 601, and the limit fins 601 are slidably connected inside the corresponding limit sliding grooves 501; A contraction cavity 602 is also formed inside the push rod 6, and a limit pile 603 is slidably connected inside the contraction cavity 602. A second support spring 604 is connected between the bottom of the limit pile 603 and the bottom of the inner wall of the contraction cavity 602. A through hole 502 is formed in the outer shell 5 corresponding to the position of the limit pile 603, and the top of the limit pile 603 extends into the through hole 502; A ring 10 is sleeved outside the cartridge 1, and a group of insertion posts 1001 are fixedly connected to the bottom of the ring 10. The bottom end of the insertion post 1001 extends into the corresponding through hole 502, and the bottom end of the insertion post 1001 is in contact with the top end of the corresponding limit pile 603; A group of lugs 1002 are fixedly connected to the top of the ring 10 corresponding to the position of the group of insertion posts 1001. A group of micro electric cylinders 11 are arranged on the top of the group of lugs 1002. The installation part at the top of the micro electric cylinder 11 is fixedly installed on the outer wall of the cartridge 1 by screws, and the end of the telescopic rod at the bottom of the micro electric cylinder 11 is rotatably connected to the corresponding lug 1002 by rivets; A push plate 12 is slidably connected inside the cartridge 1. A third support spring 13 is connected between the top of the push plate 12 and the bottom of the upper cover plate 2. A group of shifting rods 1201 are fixedly welded on the outer edge of the push plate 12. A group of stroke grooves 102 are formed in the cartridge 1 corresponding to the position of the group of shifting rods 1201. The end of the shifting rod 1201 extends outside the cartridge 1 through the corresponding stroke groove 102. A number of fire extinguishing balls 14 are filled between the push plate 12 and the guiding funnel 3 inside the cartridge 1. One of the fire extinguishing balls 14 at the top is in contact with the bottom of the push plate 12, and one of the fire extinguishing balls 14 at the bottom is in contact with the top of the pulley bodies of the two contact pulleys 9. The outer wall diameter of the fire extinguishing ball 14 is equal to the inner wall diameter of the bottom opening of the guiding funnel 3; A bomb dropping hole 103 is also formed on one side of the outer wall of the cartridge 1, and a sealing plate 104 is fixedly installed on the bomb dropping hole 103 through a number of quick-release bolts; A number of installation ends 201 are fixedly welded on the upper cover plate 2. A multi-rotor fire fighting UAV body 15 is arranged on the upper cover plate 2, and an installation plate 1501 is fixedly installed at the bottom of the multi-rotor fire fighting UAV body 15. The installation plate 1501 is fixedly installed with the number of installation ends 201 through bolts.

[0017] The working principle of the fire extinguishing bomb throwing device of this multi-rotor fire fighting UAV is as follows: First, lift the push plate 12 upward along the direction of the stroke groove 102 to the top of the bomb dropping hole 103 through a group of shifting rods 1201. Then remove the sealing plate 104 and put a number of fire extinguishing balls 14 into the cartridge 1 one by one through the bomb dropping hole 103. Then reinstall the sealing plate 104 and release the lifting of the group of shifting rods 1201. At this time, the push plate 12 is supported by the third support spring 13 and squeezes a number of fire extinguishing balls 14 downward simultaneously to store energy for the later throwing of the fire extinguishing balls 14; When dropping bombs, first, the multi-rotor fire-fighting UAV body 15 carries this device and flies above the fire source. Then, a group of micro electric cylinders 11 are controlled to start simultaneously, pushing the ring 10 downward once and immediately resetting. At this time, a group of plug posts 1001 pass through the through holes 502 on the two spring plunger mechanisms 4, pushing the limit posts 603 on the two spring plunger mechanisms 4 downward and making them retract into the contraction cavity 602. The top end of the limit post 603 disengages from the connection inside the through hole 502. At this time, the connection between the push rod 6 and the housing 5 loses the limit structure, and the push rod 6 can slide freely inside the housing 5; At this time, since several fire extinguishing balls 14 are in the state of being charged for throwing, the fire extinguishing ball 14 at the bottom moves downward through the opening at the bottom of the guiding funnel 3, and pushes the contact pulleys 9 of the two spring plunger mechanisms 4 to both sides respectively, opening the throwing channel. At this time, the fire extinguishing ball 14 at the bottom can be smoothly thrown out through the opening at the bottom of the ammunition cartridge 1; During the process of gradually throwing out the fire extinguishing ball 14 at the bottom, the contact pulleys 9 of the two spring plunger mechanisms 4 also gradually move closer and reset along the outer shape structure of the top surface of the fire extinguishing ball 14 at the bottom and the reverse elastic support of the support spring one 8, and until the limit post 603 returns to the position of the through hole 502 and inserts into the through hole 502, locking and limiting the movement of the push rod 6 and the contact pulley 9, so as to prevent the next fire extinguishing ball 14 at the bottom from automatically popping out, achieving the effect that the ring 10 reciprocates up and down once and only one fire extinguishing ball 14 automatically pops out and is thrown. In this way, the number of fire extinguishing balls 14 inside the ammunition cartridge 1 continuously decreases, and the support spring three 13 pushes the push plate 12 to continuously squeeze downward until all the fire extinguishing balls 14 inside the ammunition cartridge 1 are thrown.

[0018] Embodiment 2: In view of the above Embodiment 1, for further description, refer to Figures 4-9 , the setting of the guiding funnel 3 plays a role in guiding the falling fire extinguishing balls 14, so that they can be ejected at the center of the ammunition cartridge 1. The setting of the support spring one 8 facilitates the reset of the push rod 6 and the contact pulley 9. The setting of a group of limit fins 601 and a group of limit chutes 501 facilitates the reciprocating movement of the push rod 6 in a fixed direction inside the housing 5, avoiding the situation that the limit post 603 cannot be smoothly inserted into the through hole 502 after resetting. The contraction cavity 602 provides a space for the retraction of the limit post 603, and the inner wall height of the contraction cavity 602 is greater than the height of the limit post 603. The group of plug posts 1001 fixedly connected to the bottom of the ring 10 facilitate pushing the corresponding limit post 603 into the contraction cavity 602 through the through hole 502, so that the connection between the push rod 6 and the housing 5 loses the limit.

[0019] The above are only the preferred specific embodiments of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, making equivalent substitutions or changes, shall be covered by the protection scope of the present invention.

Claims

1. A fire-extinguishing bomb throwing device for a multi-rotor fire-fighting drone, comprising a cartridge (1), characterized in that: An upper cover plate (2) is fixedly mounted on the top of the cartridge (1) by means of bolts, a guide funnel (3) is fixedly mounted on the bottom of the inner wall of the cartridge (1) by means of bolts, plug holes (101) are provided on both sides of the cartridge (1) at the bottom of the guide funnel (3), and spring plunger mechanisms (4) of the same structure are inserted into the two plug holes (101); The spring plunger mechanism (4) comprises a shell (5) inserted into the corresponding socket (101), a push rod (6) is slidably connected inside the shell (5), a group of mounting nuts (7) are threadedly connected on the shell (5) at the connection of the socket (101), a support spring (8) is sleeved inside the shell (5), two ends of the support spring (8) are respectively in contact with one side of the inner wall of the shell (5) and one end of the push rod (6), a contact pulley (9) is fixedly installed on the other end of the push rod (6) located outside the shell (5), a group of limiting fins (601) are fixedly welded to the outer wall of the push rod (6), a group of limiting sliding grooves (501) are opened on the inner wall of the shell (5) corresponding to the position of the group of limiting fins (601), and the limiting fins (601) are slidably connected inside the corresponding limiting sliding grooves (501); A contraction cavity (602) is also provided inside the push rod (6), and a limit pile (603) is slidably connected inside the contraction cavity (602), and the bottom of the limit pile (603) and the bottom of the inner wall of the contraction cavity (602) are connected via a second supporting spring (604), and a through hole (502) is provided on the housing (5) at the position corresponding to the limit pile (603), and the top of the limit pile (603) extends into the inside of the through hole (502).

2. The fire-extinguishing bomb throwing device of a multi-rotor fire-fighting drone according to claim 1 is characterized in that: The cartridge (1) is sleeved with a ring (10) on the outside, and a group of plug posts (1001) are fixedly connected to the bottom of the ring (10), the bottom ends of the plug posts (1001) extend into the corresponding through holes (502), and the bottom ends of the plug posts (1001) are in contact with the top ends of the corresponding limit piles (603).

3. The fire-extinguishing bomb throwing device of a multi-rotor fire-fighting drone according to claim 2 is characterized in that: A group of ear pieces (1002) are fixedly connected to the top of the ring (10) at a position corresponding to a group of the plug posts (1001), and a micro-electric cylinder (11) is arranged on the top of each of the ear pieces (1002). The mounting portion at the top of the micro-electric cylinder (11) is fixedly mounted on the outer wall of the cartridge (1) by means of screws, and the end of the telescopic rod at the bottom of the micro-electric cylinder (11) is rotatably connected to the corresponding ear piece (1002) by means of a rivet.

4. The fire-extinguishing bomb throwing device of a multi-rotor fire-fighting drone according to claim 1 is characterized in that: A push plate (12) is slidably connected inside the cartridge (1), and the top of the push plate (12) is connected to the bottom of the upper cover plate (2) via a supporting spring (13). A group of levers (1201) are fixedly welded on the outer edge of the push plate (12), and a group of travel grooves (102) are opened on the cartridge (1) at the position corresponding to a group of levers (1201). The end of the lever (1201) extends to the outside of the cartridge (1) through the corresponding travel grooves (102). A plurality of fire extinguishing balls (14) are filled between the push plate (12) and the guide funnel (3) inside the cartridge (1), and one of the fire extinguishing balls (14) located at the top contacts the bottom of the push plate (12), and one of the fire extinguishing balls (14) located at the bottom contacts the top of the pulley bodies of the two contact pulleys (9). The outer wall diameter of the fire extinguishing ball (14) is equal to the inner wall diameter of the bottom opening of the guide funnel (3).

5. The fire-extinguishing bomb throwing device of a multi-rotor fire-fighting drone according to claim 1 is characterized in that: A bullet-dropping hole (103) is also provided on one side of the outer wall of the ammunition cartridge (1), and a sealing plate (104) is fixedly mounted on the bullet-dropping hole (103) via a plurality of quick-release bolts.

6. The fire-extinguishing bomb throwing device of a multi-rotor fire-fighting drone according to claim 1 is characterized in that: A plurality of mounting ends (201) are fixedly welded onto the upper cover plate (2), a multi-rotor fire-fighting drone body (15) is arranged on the upper cover plate (2), and a mounting plate (1501) is fixedly mounted on the bottom of the multi-rotor fire-fighting drone body (15), and the mounting plate (1501) and the plurality of mounting ends (201) are fixedly mounted via bolts.

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