An unmanned aerial vehicle material spraying device and an unmanned aerial vehicle

Abstract

The present invention provides a drone material spraying device and a drone, belonging to the technical field of drones; it includes a liquid storage tank for storing fire extinguishing liquid. A spraying mechanism is installed at the water outlet at the bottom of the liquid storage tank. The spraying mechanism includes a connector fixed at the water outlet at the bottom of the liquid storage tank. A rubber tube is detachably connected to the bottom of the connector. A driving structure is arranged on the side of the rubber tube. The driving structure includes connecting blocks fixed on the side of the rubber tube, and the number of connecting blocks is two. With the setting of the rubber tube and the driving member in the present invention, when the fire area is large, the driving member extends, pulls the rubber tube through the connecting block, deforms it into a flat nozzle shape, transforms the originally sprayed columnar fire extinguishing liquid into a strip shape, and at the same time, in cooperation with the movement of the drone body, greatly improves the dispersion degree of the fire extinguishing liquid, so as to quickly and effectively extinguish large-area fires and timely contain the spread of the fire.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and particularly to an unmanned aerial vehicle material spraying device and an unmanned aerial vehicle. Background Art

[0002] When a fire extinguishing unmanned aerial vehicle is applied in a forest environment, when a fire breaks out at a certain location in the forest, the fire extinguishing unmanned aerial vehicle takes off. A liquid storage tank is installed at the bottom of the fuselage of the fire extinguishing unmanned aerial vehicle, and fire extinguishing liquid is stored in the liquid storage tank. The built-in camera on the fire extinguishing unmanned aerial vehicle provides an observation field of view, so that the fire extinguishing unmanned aerial vehicle can accurately fly above the fire point, with the nozzle facing the fire point position. The water pump is started, and the water pump transports the fire extinguishing liquid in the liquid storage tank to the nozzle through a pipeline and sprays it out from the nozzle position. The sprayed fire extinguishing liquid in the shape of a water column falls to the fire point position to achieve fire extinguishing. The liquid storage tank, the water pump, the pipeline and the nozzle then form the material spraying device of the unmanned aerial vehicle.

[0003] When a common fire extinguishing unmanned aerial vehicle is operating, after flying directly above the fire point, it sprays fire extinguishing liquid through the nozzle, and relies on the fire extinguishing liquid falling to the fire point to achieve fire extinguishing. However, the fire extinguishing liquid sprayed by the nozzle is generally in the shape of a water column and is relatively concentrated. Once the fire area expands, after this water column-shaped flame retardant liquid falls to the ground, the dispersion degree is limited. Therefore, when facing a fire point with a large fire area, it is difficult to quickly and effectively extinguish the fire and it is difficult to timely control the spread of the fire. Therefore, the present application provides an unmanned aerial vehicle material spraying device and an unmanned aerial vehicle to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an unmanned aerial vehicle material spraying device and an unmanned aerial vehicle to solve the problem that when the fire area expands, the water column-shaped and relatively concentrated fire extinguishing liquid sprayed by a common fire extinguishing unmanned aerial vehicle is difficult to quickly and effectively extinguish the fire, thus making it difficult to timely control the spread of the fire.

[0005] To solve the above technical problem, the present invention provides the following technical solutions:

[0006] An unmanned aerial vehicle material spraying device includes a liquid storage tank for storing fire extinguishing liquid. A spraying mechanism is installed at the water outlet at the bottom of the liquid storage tank. The spraying mechanism includes a joint fixed at the water outlet at the bottom of the liquid storage tank. A rubber tube is detachably connected to the bottom of the joint. A driving structure is arranged on the side of the rubber tube. The driving structure includes two connecting blocks fixed on the side of the rubber tube. A driving member is installed at the bottom of the liquid storage tank through a mounting bracket. When the driving member expands and contracts, it drives the rubber tube to deform through the connecting blocks. A water pump is installed inside the liquid storage tank;

[0007] When the fire area is large, the driving member extends to pull the rubber tube through the connecting blocks, causing the rubber tube to deform and increasing the spraying area of the fire extinguishing liquid. When the fire area is small, the driving member contracts, and the rubber tube resets to reduce the spraying area of the fire extinguishing liquid.

[0008] Preferably, an elastic component is installed on the outer wall of the rubber tube. The elastic component includes two strip-shaped elastic pieces attached to the outer wall of the rubber tube. Positioning columns are fixed at both ends of the strip-shaped elastic pieces. A vertical groove is formed at the top of the connecting block. The positioning columns are inserted into the interior of the vertical groove, and the length of the positioning columns is greater than the width of the strip-shaped elastic pieces. A number of L-shaped blocks are fixed on the outer wall of the rubber tube, and the L-shaped blocks are used for positioning when the strip-shaped elastic pieces are attached to the outer wall of the rubber tube.

[0009] Preferably, the top of the horizontal section of the L-shaped block is attached to the bottom of the strip-shaped elastic piece, the side of the vertical section of the L-shaped block is attached to the side of the strip-shaped elastic piece away from the rubber tube. A protruding portion is provided at the top of the horizontal section of the L-shaped block, and the protruding portion is fixed on the outer wall of the rubber tube. A clamping portion is provided at the top of the vertical section of the L-shaped block, and the clamping portion is attached to the outer wall of the rubber tube. A number of upper positioning grooves are formed at the top of the strip-shaped elastic piece, and the inner wall of the upper positioning grooves is attached to the clamping portion. An inclined guiding surface one is provided at the top of the clamping portion. A number of lower positioning grooves are formed at the bottom of the strip-shaped elastic piece, and the inner wall of the lower positioning grooves is attached to the protruding portion.

[0010] Preferably, the width of the upper positioning groove near the connecting block is greater than the width of the upper positioning groove away from the connecting block, and the width of the lower positioning groove near the connecting block is greater than the width of the lower positioning groove away from the connecting block.

[0011] Preferably, a connecting piece is provided on the side of the strip-shaped elastic piece away from the rubber tube, and the connecting piece is used to increase the connection tightness between the strip-shaped elastic piece and the L-shaped block.

[0012] Preferably, the connecting piece includes two rubber bands fixed on the side of the strip-shaped elastic piece away from the rubber tube. The opposite ends of the two rubber bands are commonly connected with a clamping block. A square groove is formed on the side of the L-shaped block away from the connecting block, and the rubber band is attached to the inner wall of the square groove. A clamping groove is formed on the side of the inner wall of the square groove, and the clamping block is stuck in the clamping groove. An inclined guiding surface two is provided at the top of the vertical section of the L-shaped block, and an inclined guiding surface three is provided at the bottom of the clamping block.

[0013] Preferably, the rubber band includes an adhesive portion and a connecting portion connected in sequence. The adhesive portion is glued on the side of the strip-shaped elastic piece away from the rubber tube, and one end of the connecting portion away from the adhesive portion is fixedly connected to the side of the clamping block.

[0014] Preferably, a number of tearing openings are provided at one end of the connecting portion away from the adhesive portion, and anti-slip lines are provided on the side of the adhesive portion.

[0015] Preferably, a connecting ring is fixed at the telescopic end of the driving member, and one side of the connecting ring close to the connecting block is fixedly connected to the side of the connecting block.

[0016] A drone, which is applied to the above-mentioned drone material spraying device, includes a drone body. A liquid storage tank is installed at the bottom of the drone body. A camera is installed at the bottom of the drone body, and the liquid storage tank is located below the camera.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above solution, through the arrangement of the rubber tube and the driving member, when the fire area is large, the driving member extends, pulls the rubber tube through the connecting block, deforms it into a flat nozzle shape, changes the originally sprayed water column-shaped fire extinguishing liquid into a strip shape, and at the same time, in cooperation with the movement of the drone body, greatly improves the dispersion degree of the fire extinguishing liquid, so as to quickly and effectively extinguish large-area fires and timely contain the spread of the fire.

[0019] Through the arrangement of the strip-shaped elastic piece, during the process of the rubber tube changing from a circle to a flat nozzle shape, the connecting block synchronously pulls the rubber tube and the strip-shaped elastic piece, causing them to deform together. When the two strip-shaped elastic pieces deform, they approach each other, exerting extrusion on the rubber tube, further promoting the deformation of the rubber tube, ensuring the stable and reliable deformation of the rubber tube. When the ignition point is relatively concentrated, the driving member shortens, and the connecting block no longer pulls the rubber tube. At this time, the rubber tube returns to its original state under the combined action of its own elastic force and the restoring elastic force of the strip-shaped elastic piece. Moreover, during the reset process of the rubber tube, it not only relies on its own elastic force to reset, but also relies on the elastic force of the strip-shaped elastic piece to assist the rubber tube in resetting, thereby effectively extending the service life of the rubber tube. In addition, when the strip-shaped elastic piece resets, it pulls the rubber tube through the L-shaped block, ensuring that the rubber tube can accurately return to the circular state. At the same time, during the reset process of the rubber tube, when the driving member shortens and drives the connecting block to move, it also has an extrusion effect on the rubber tube, further assisting the rubber tube in resetting. When the rubber tube resets, the fire extinguishing liquid sprayed from the rubber tube is in a concentrated water column shape, which can quickly and effectively extinguish the concentrated ignition point.

[0020] Through the arrangement of the L-shaped block and the positioning column, after the strip-shaped elastic piece is used for a period of time, it needs to be replaced. When replacing, squeeze the strip-shaped elastic piece towards the rubber tube to separate it from the vertical section of the L-shaped block, and then move the strip-shaped elastic piece upward to disengage the positioning column from the vertical groove of the connecting block, and the disassembly can be completed. When installing, first insert the positioning column at the end of the strip-shaped elastic piece into the vertical groove of the connecting block, and then move the strip-shaped elastic piece downward to insert the strip-shaped elastic piece between the vertical section of the L-shaped block and the rubber tube. At the same time, by using the design of the convex part and the clamping part on the L-shaped block, the accuracy and reliability of the installation position of the strip-shaped elastic piece are guaranteed, enabling it to play a stable role at the rubber tube.

[0021] Through the arrangement of the rubber band and the clamping block, after the strip-shaped elastic piece is installed, the clamping block is stuck in the clamping groove of the L-shaped block under the elastic force of the rubber band. Through the cooperation of the rubber band and the clamping block, it is prevented that the strip-shaped elastic piece separates from the L-shaped block during the deformation or reset process, further ensuring that the strip-shaped elastic piece stably plays its role at the rubber tube.

[0022] Through the settings of the guiding surface two and the guiding surface three, when the strip-shaped elastic piece is inserted between the vertical section of the L-shaped block and the rubber tube, the strip-shaped elastic piece drives the clamping block to move downward at the same time. When the clamping block moves downward, the guiding surface two on the L-shaped block presses the guiding surface three at the bottom of the clamping block, causing the clamping block to move away from the rubber tube and driving the rubber band to be in a stretched state. While the clamping block moves away from the rubber tube, it moves downward following the strip-shaped elastic piece. When the installation of the strip-shaped elastic piece is completed, the positions of the clamping block and the card slot correspond to each other, and the clamping block is automatically clamped in the card slot under the action of the elastic force of the rubber band, realizing the stable installation of the strip-shaped elastic piece and the L-shaped block. When installing the strip-shaped elastic piece, there is no need to separately pinch and pull the clamping block by hand, and the clamping block can automatically move downward under the cooperation of the guiding surface two and the guiding surface three, further improving the installation convenience of the strip-shaped elastic piece.

[0023] Through the setting of the tear opening, when disassembling the strip-shaped elastic piece, press the bonding part of the rubber band with a finger to deform the strip-shaped elastic piece into the rubber sleeve. At the same time, the bonding part pulls the connecting part. Since the tear opening reduces the connection strength between the connecting part and the clamping block, the connection between the connecting part and the clamping block is more likely to break. After breaking, it is convenient to take out the clamping block from the card slot, further improving the disassembly convenience of the strip-shaped elastic piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure at the bottom of the liquid storage barrel of the present invention;

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure at the driving part of the present invention;

[0027] Figure 4 It is a cross-sectional view of the rubber tube of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the rubber tube of the present invention;

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure at the convex part of the present invention;

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure at the strip-shaped elastic piece of the present invention;

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the connecting block of the present invention;

[0032] Figure 9 It is a schematic diagram of the three-dimensional structure at the card slot of the present invention;

[0033] Figure 10 It is a schematic diagram of the three-dimensional structure at the tear opening of the present invention;

[0034] Figure 11 Schematic three-dimensional structure diagram of the upper positioning groove of the present invention;

[0035] Figure 12 Schematic three-dimensional structure diagram of the clamping block of the present invention;

[0036] Figure 13 Schematic three-dimensional structure diagram of the clamping portion of the present invention.

[0037] In the figure: 1, unmanned aerial vehicle body; 2, liquid storage tank; 3, camera; 4, spraying mechanism; 5, joint; 6, rubber hose; 7, driving structure; 8, driving member; 9, connecting ring; 10, connecting block; 11, elastic component; 12, strip-shaped elastic piece; 13, L-shaped block; 14, convex portion; 15, clamping portion; 16, upper positioning groove; 17, lower positioning groove; 18, guiding surface one; 19, guiding surface two; 20, positioning column; 21, vertical groove; 22, connecting member; 23, rubber band; 24, clamping block; 25, guiding surface three; 26, bonding portion; 27, connecting portion; 28, tearing opening; 29, card slot; 30, square groove; 31, water pump.

[0038] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. Detailed implementation manners

[0039] The following describes in detail a drone material spraying device and a drone provided by the present invention in combination with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0040] It should be noted that in the specification, "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiment may include specific features, structures or characteristics, but not necessarily every embodiment includes this specific feature, structure or characteristic. In addition, when combining an embodiment to describe a specific feature, structure or characteristic, implementing such a feature, structure or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0041] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0042] like Figures 1-13 As shown, an embodiment of the present invention provides a material spraying device for a drone, comprising a liquid storage tank 2, the liquid storage tank 2 is used to store fire extinguishing liquid, a spraying mechanism 4 is installed at the water outlet at the bottom of the liquid storage tank 2, the spraying mechanism 4 comprises a joint 5 fixed at the water outlet at the bottom of the liquid storage tank 2, a rubber tube 6 is detachably connected to the bottom of the joint 5, a driving structure 7 is arranged on the side of the rubber tube 6, the driving structure 7 comprises a connecting block 10 fixed on the side of the rubber tube 6, the number of the connecting blocks 10 is two, a driving member 8 is installed at the bottom of the liquid storage tank 2 through a mounting frame, the driving member 8 is a micro electric push rod, and the driving member 8 drives the rubber tube 6 to deform through the connecting block 10 when the driving member 8 is extended and retracted, a water pump 31 is installed inside the liquid storage tank 2, and the water pump 31 and the driving member 8 are powered by a battery carried by the drone;

[0043] When the fire area is large, the driving member 8 is extended to pull the rubber tube 6 through the connecting block 10, so that the rubber tube 6 is deformed to increase the spraying area of ​​the fire extinguishing liquid. When the fire area is small, the driving member 8 is shortened, and the rubber tube 6 is reset to reduce the spraying area of ​​the fire extinguishing liquid. After the water pump 31 is started, the fire extinguishing liquid in the liquid storage tank 2 is transported to the rubber tube 6 through the joint 5 to ensure that the fire extinguishing liquid can reach the spraying end smoothly. When the fire area is large, the push rod of the driving member 8 is extended to drive the connecting block 10 to pull the rubber tube 6, so that the rubber tube 6 is deformed into a flat mouth shape, and the original water column-shaped fire extinguishing liquid is transformed into a strip shape. With the movement of the drone, the dispersion of the fire extinguishing liquid is greatly improved, and rapid and effective fire extinguishing of a large area of ​​fire is achieved, and the spread of the fire is curbed in time. When the fire area is small, the push rod of the driving member 8 is shortened, and the connecting block 10 no longer pulls the rubber tube 6. The rubber tube 6 is reset under the action of its own elastic force, and the strip-shaped fire extinguishing liquid is transformed into a water column shape, reducing the spraying area of ​​the fire extinguishing liquid, and realizing concentrated spraying of the fire extinguishing liquid, thereby accurately responding to different fire scales.

[0044] like Figure 3 , Figure 5 and Figure 6As shown, in this embodiment, an elastic component 11 is installed on the outer wall of the rubber tube 6. The elastic component 11 includes two strip-shaped elastic pieces 12 that are attached to the outer wall of the rubber tube 6. Positioning columns 20 are fixed at both ends of the strip-shaped elastic piece 12. A vertical groove 21 is formed at the top of the connecting block 10. The positioning columns 20 are inserted into the inside of the vertical groove 21, and the length of the positioning column 20 is greater than the width of the strip-shaped elastic piece 12. A number of L-shaped blocks 13 are fixed on the outer wall of the rubber tube 6. The L-shaped blocks 13 are used for positioning when the strip-shaped elastic piece 12 is attached to the outer wall of the rubber tube 6. When the rubber tube 6 deforms under the pulling of the connecting block 10, the connecting block 10 synchronously pulls the strip-shaped elastic piece 12 through the positioning columns 20, so that it deforms together with the rubber tube 6. The two strip-shaped elastic pieces 12 approach each other during the deformation process, exerting extrusion on the rubber tube 6, further promoting the deformation of the rubber tube 6 and ensuring the stable and reliable deformation of the rubber tube 6. At the same time, the cooperation between the positioning column 20 and the vertical groove 21, and the positioning of the strip-shaped elastic piece 12 by the L-shaped block 13 ensure the accurate position of the strip-shaped elastic piece 12 on the outer wall of the rubber tube 6, so as to stably play its function of assisting the deformation and reset of the rubber tube 6. And by using the design that the length of the positioning column 20 is greater than the width of the strip-shaped elastic piece 12, when installing the strip-shaped elastic piece 12, the positioning column 20 can be pre-inserted into the vertical groove 21 on the connecting block 10 to realize the positioning of the end of the strip-shaped elastic piece 12, thus facilitating the subsequent installation of the strip-shaped elastic piece 12.

[0045] As Figure 6 and Figure 13 shown, in this embodiment, the top of the horizontal section of the L-shaped block 13 is attached to the bottom of the strip-shaped elastic piece 12, and the side of the vertical section of the L-shaped block 13 is attached to the side of the strip-shaped elastic piece 12 away from the rubber tube 6. A convex portion 14 is provided at the top of the horizontal section of the L-shaped block 13, and the convex portion 14 is fixed to the outer wall of the rubber tube 6. A clamping portion 15 is provided at the top of the vertical section of the L-shaped block 13, and the clamping portion 15 is attached to the outer wall of the rubber tube 6. A number of upper positioning grooves 16 are formed at the top of the strip-shaped elastic piece 12, and the inner wall of the upper positioning groove 16 is attached to the clamping portion 15. An inclined guiding surface 18 is provided at the top of the clamping portion 15. A number of lower positioning grooves 17 are formed at the bottom of the strip-shaped elastic piece 12, and the inner wall of the lower positioning groove 17 is attached to the convex portion 14. The L-shaped block 13 and the strip-shaped elastic piece 12 are tightly attached through the convex portion 14 and the lower positioning groove 17, and the clamping portion 15 and the upper positioning groove 16, ensuring the stable and reliable installation position of the strip-shaped elastic piece 12, enabling it to play a stable role at the rubber tube 6. The guiding surface 18 plays a guiding role when installing the strip-shaped elastic piece 12, facilitating the accurate insertion of the strip-shaped elastic piece 12 between the vertical section of the L-shaped block 13 and the rubber tube 6, ensuring a smooth installation process and improving the installation convenience of the strip-shaped elastic piece 12.

[0046] As Figure 11As shown in the figure, in this embodiment, the width of the upper positioning groove 16 near the connecting block 10 is greater than the width of the upper positioning groove 16 far from the connecting block 10, and the width of the lower positioning groove 17 near the connecting block 10 is greater than the width of the lower positioning groove 17 far from the connecting block 10. The width of the upper positioning groove 16 near the connecting block 10 is greater than the width of the upper positioning groove 16 far from the connecting block 10. Its function is that when the strip-shaped elastic piece 12 and the rubber tube 6 deform simultaneously, the deformation degree of the upper positioning groove 16 near the connecting block 10 is larger. In order to prevent the L-shaped block 13 from affecting the deformation at this place and prevent the deformation at this place from affecting the deformation of the rubber tube 6, the width of the upper positioning groove 16 near the connecting block 10 is designed to be greater than the width of the upper positioning groove 16 far from the connecting block 10, preventing interference between the strip-shaped elastic piece 12 and the rubber tube 6 during deformation, and the design of the width of the lower positioning groove 17 near the connecting block 10 being greater than the width of the lower positioning groove 17 far from the connecting block 10 has the same function as above.

[0047] As Figures 5-7 shown in the figure, in this embodiment, a connecting piece 22 is provided on the side of the strip-shaped elastic piece 12 away from the rubber tube 6. The connecting piece 22 is used to increase the connection tightness between the strip-shaped elastic piece 12 and the L-shaped block 13. During the frequent deformation and reset process of the rubber tube 6, the connecting piece 22 prevents the strip-shaped elastic piece 12 from separating from the L-shaped block 13, ensuring that the strip-shaped elastic piece 12 can always stably assist the rubber tube 6 to work.

[0048] As Figure 5 、 Figure 6 、 Figure 7 and Figure 10 shown in the figure, in this embodiment, the connecting piece 22 includes two rubber bands 23 fixed on the side of the strip-shaped elastic piece 12 away from the rubber tube 6. The opposite ends of the two rubber bands 23 are commonly connected with a clamping block 24. A square groove 30 is opened on the side surface of the L-shaped block 13 far from the connecting block 10. The rubber bands 23 are attached to the inner wall of the square groove 30. A clamping groove 29 is opened on the side surface of the inner wall of the square groove 30. The clamping block 24 is stuck inside the clamping groove 29. An inclined guiding surface two 19 is provided at the top of the vertical section of the L-shaped block 13, and an inclined guiding surface three 25 is provided at the bottom of the clamping block 24. When installing the strip-shaped elastic piece 12, insert it between the L-shaped block 13 and the rubber tube 6. The strip-shaped elastic piece 12 drives the clamping block 24 to move downward. The guiding surface two 19 on the L-shaped block 13 presses the guiding surface three 25 at the bottom of the clamping block 24, causing the clamping block 24 to move away from the rubber tube 6 and driving the rubber bands 23 to stretch. When the installation of the strip-shaped elastic piece 12 is completed, the position of the clamping block 24 corresponds to that of the clamping groove 29, and the clamping block 24 is automatically stuck in the clamping groove 29 under the elastic force of the rubber bands 23, realizing the tight connection between the strip-shaped elastic piece 12 and the L-shaped block 13, eliminating the need for manual operation of the clamping block 24 alone, greatly improving the installation convenience of the strip-shaped elastic piece 12, and at the same time ensuring the stability of the connection between the strip-shaped elastic piece 12 and the L-shaped block 13, effectively preventing the strip-shaped elastic piece 12 from separating from the L-shaped block 13 during the working process.

[0049] As Figure 7 and Figure 10 shown, in this embodiment, the rubber band 23 includes an adhesive part 26 and a connecting part 27 connected in sequence. The adhesive part 26 is adhesively bonded to the side of the strip-shaped elastic piece 12 away from the rubber tube 6. One end of the connecting part 27 away from the adhesive part 26 is fixedly connected to the side surface of the clamping block 24. The adhesive part 26 is used to increase the contact area between the connecting part 27 and the strip-shaped elastic piece 12, thereby improving the connection stability between the rubber band 23 and the strip-shaped elastic piece 12. The connecting part 27 is used to connect the clamping block 24. Under the elastic force of the rubber band 23, the clamping block 24 can accurately cooperate with the clamping groove 29 on the L-shaped block 13, realizing the tight connection between the strip-shaped elastic piece 12 and the L-shaped block 13, and providing guarantee for the stable operation of the entire elastic component 11.

[0050] As Figure 10 shown, in this embodiment, several tear openings 28 are provided at one end of the connecting part 27 away from the adhesive part 26, and anti-slip lines are provided on the side surface of the adhesive part 26. When disassembling the strip-shaped elastic piece 12, press the adhesive part 26 of the rubber band 23 to deform the strip-shaped elastic piece 12 towards the inside of the rubber tube 6. The adhesive part 26 pulls the connecting part 27. Since the tear openings 28 reduce the connection strength between the connecting part 27 and the clamping block 24, the connection between the connecting part 27 and the clamping block 24 is more likely to break. After breaking, it is convenient to take out the clamping block 24 from the clamping groove 29, thereby improving the disassembly convenience of the strip-shaped elastic piece 12. The anti-slip lines on the side surface of the adhesive part 26 increase the friction force when the operator presses, facilitating the operation of the rubber band 23.

[0051] As Figure 3 shown, in this embodiment, a connecting ring 9 is fixed to the telescopic end of the driving member 8. One side of the connecting ring 9 close to the connecting block 10 is fixedly connected to the side surface of the connecting block 10. The connecting ring 9 plays a role in connecting the telescopic end of the driving member 8 and the connecting block 10, ensuring that the telescopic movement of the driving member 8 can be stably and reliably transmitted to the connecting block 10. During the elongation or shortening of the driving member 8, the connecting block 10 is driven to move precisely through the connecting ring 9, thereby realizing the pulling or relaxation of the rubber tube 6, controlling the deformation and reset of the rubber tube 6, ensuring that the entire spraying device can flexibly adjust the spraying form and coverage area of the fire extinguishing liquid according to the size of the fire area, and improving the efficiency and effect of the fire extinguishing operation.

[0052] A drone, which is applied to the above-mentioned drone material spraying device, includes a drone body 1. A liquid storage tank 2 is installed at the bottom of the drone body 1. A camera 3 is installed at the bottom of the drone body 1. The liquid storage tank 2 is located below the camera 3. The drone body 1 serves as the carrier of the entire device, enabling rapid arrival and flexible movement in different fire areas. The camera 3 monitors the situation of the fire area in real time, providing intuitive fire information for the operator to help accurately judge key parameters such as the size of the fire and the area of the fire, so as to control the expansion and contraction of the driving member 8 according to the actual situation, adjust the shape of the rubber tube 6 and the spraying state of the fire extinguishing liquid, and achieve efficient fire extinguishing.

[0053] Working principle: For a fire area with a large fire area, the drone body 1 flies above the fire area. The water pump 31 in the liquid storage tank 2 is started, and the fire extinguishing liquid is transported to the rubber tube 6 through the joint 5. At the same time, the push rod of the driving member 8 extends, so as to drive the connecting block 10 to move away from the rubber tube 6 through the connecting ring 9, and then pull the rubber tube 6, deforming it into a flat nozzle shape. At the same time, the connecting block 10 synchronously pulls the two strip-shaped elastic pieces 12 through the positioning column 20, so that the strip-shaped elastic pieces 12 and the rubber tube 6 deform synchronously, and the two strip-shaped elastic pieces 12 approach each other during the deformation process, generating extrusion on the rubber tube 6, further promoting the deformation of the rubber tube 6 and ensuring the stable and reliable deformation of the rubber tube 6. The originally water-column-shaped sprayed fire extinguishing liquid is transformed into a strip shape, and then combined with the movement of the drone body 1, the dispersion degree of the fire extinguishing liquid is greatly improved, so as to quickly and effectively extinguish large-area fires and timely contain the spread of the fire;

[0054] When the ignition points are relatively concentrated, the push rod of the driving member 8 shortens, driving the connecting block 10 to move towards the inside of the rubber tube 6 through the connecting ring 9. The connecting block 10 no longer pulls the rubber tube 6. The rubber tube 6 returns to its original state under the combined action of its own elastic force and the reset elastic force of the strip-shaped elastic piece 12. When the strip-shaped elastic piece 12 resets, it pulls the rubber tube 6 through the L-shaped block 13 to ensure that it accurately returns to the circular state. At the same time, the shortening of the driving member 8 drives the connecting block 10 to move towards the inside of the rubber tube 6, and the connecting block 10 generates extrusion on the rubber tube 6, further assisting the rubber tube 6 to reset. The fire extinguishing liquid sprayed by the reset rubber tube 6 is in a concentrated water column shape, which can quickly and effectively extinguish the concentrated ignition points;

[0055] After the strip-shaped elastic piece 12 has been used for a period of time, its elasticity may gradually decrease due to multiple deformations and resets. Therefore, it needs to be replaced. When replacing, press the bonding part 26 of the rubber band 23 with your finger to deform the strip-shaped elastic piece 12 into the rubber tube 6. At the same time, the bonding part 26 pulls the connecting part 27. Through the design of the tear opening 28, the connection strength between the connecting part 27 and the clamping block 24 is reduced, making the connection between the connecting part 27 and the clamping block 24 easier to break. After breaking, it is convenient to take out the clamping block 24 from the clamping groove 29. Then, continue to squeeze the strip-shaped elastic piece 12 towards the rubber tube 6 to separate it from the vertical section of the L-shaped block 13. At the same time, separate the upper positioning groove 16 from the clamping part 15 of the L-shaped block 13 and the lower positioning groove 17 from the protruding part 14 of the L-shaped block 13. Then, move the strip-shaped elastic piece 12 upward to disengage the positioning post 20 from the vertical groove 21 of the connecting block 10, and the disassembly can be completed. When installing, first insert the positioning post 20 at the end of the strip-shaped elastic piece 12 into the vertical groove 21 of the connecting block 10, and then move the strip-shaped elastic piece 12 downward. The strip-shaped elastic piece 12 drives the clamping block 24 to move downward through the rubber band 23. When the clamping block 24 moves downward, the guiding surface two 19 on the L-shaped block 13 squeezes the guiding surface three 25 at the bottom of the clamping block 24, causing the clamping block 24 to move away from the rubber tube 6 and driving the rubber band 23 to be in a stretched state. When the bottom of the strip-shaped elastic piece 12 fits against the horizontal section of the L-shaped block 13, and at the same time the protruding part 14 is inserted into the lower positioning groove 17 and the clamping part 15 is clamped in the upper positioning groove 16, the installation of the strip-shaped elastic piece 12 is completed. When the installation of the strip-shaped elastic piece 12 is completed, the clamping block 24 corresponds to the position of the clamping groove 29, and the clamping block 24 is automatically clamped in the clamping groove 29 under the elastic force of the rubber band 23, realizing the tight connection between the strip-shaped elastic piece 12 and the L-shaped block 13;

[0056] After the strip-shaped elastic piece 12 is installed, the clamping block 24 is clamped in the clamping groove 29 on the vertical section of the L-shaped block 13, realizing the tight connection between the strip-shaped elastic piece 12 and the L-shaped block 13, thereby preventing the strip-shaped elastic piece 12 from separating from the L-shaped block 13 during the deformation or reset process, and ensuring that the strip-shaped elastic piece 12 can stably play its role during the deformation or reset process of the rubber tube 6;

[0057] When the rubber tube 6 needs to be replaced after long-term use, during replacement, first remove the strip-shaped elastic piece 12 from the rubber sleeve according to the above disassembly steps of the strip-shaped elastic piece 12, then remove the bolt connecting the connecting ring 9 and the connecting block 10, and then remove the bolt at the round sleeve at the top of the rubber tube 6, and the disassembly of the rubber sleeve can be realized. When installing a new rubber tube 6, put the round sleeve on the new rubber tube 6 on the bottom of the interface and fix it with bolts, then connect the connecting block 10 and the connecting ring 9 with bolts, and then repeat the above installation steps of the strip-shaped elastic piece 12 to install the strip-shaped elastic piece 12 at the new rubber tube 6.

[0058] The present invention covers any alternatives, modifications, equivalent methods, and solutions made within the essence and scope of the present invention. For the public to have a thorough understanding of the present invention, specific details have been described in detail in the above preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention even without the description of these details.

[0059] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. An unmanned aerial vehicle material spraying device, comprising a liquid storage tank (2), characterized in that, The liquid storage tank (2) is used to store the fire extinguishing liquid. A spraying mechanism (4) is installed at the water outlet at the bottom of the liquid storage tank (2). The spraying mechanism (4) includes a joint (5) fixed at the water outlet at the bottom of the liquid storage tank (2). A rubber tube (6) is detachably connected to the bottom of the joint (5). A driving structure (7) is arranged on the side of the rubber tube (6). The driving structure (7) includes a connecting block (10) fixed on the side of the rubber tube (6). The number of the connecting blocks (10) is two. A driving member (8) is installed at the bottom of the liquid storage tank (2) through a mounting bracket. When the driving member (8) expands and contracts, the rubber tube (6) is driven to deform through the connecting block (10). A water pump (31) is installed inside the liquid storage tank (2). When the fire area is large, the driving member (8) extends to pull the rubber tube (6) through the connecting block (10), so that the rubber tube (6) deforms to increase the spraying area of the fire extinguishing liquid. When the fire area is small, the driving member (8) shortens, and the rubber tube (6) resets to reduce the spraying area of the fire extinguishing liquid. An elastic component (11) is installed on the outer wall of the rubber tube (6). The elastic component (11) includes two strip-shaped elastic pieces (12) attached to the outer wall of the rubber tube (6). A number of L-shaped blocks (13) are fixed on the outer wall of the rubber tube (6). The L-shaped blocks (13) are used for positioning when the strip-shaped elastic pieces (12) are attached to the outer wall of the rubber tube (6). The top of the horizontal section of the L-shaped block (13) is attached to the bottom of the strip-shaped elastic piece (12). The side of the vertical section of the L-shaped block (13) is attached to the side of the strip-shaped elastic piece (12) away from the rubber tube (6). A convex portion (14) is arranged at the top of the horizontal section of the L-shaped block (13), and the convex portion (14) is fixed on the outer wall of the rubber tube (6). A clamping portion (15) is arranged at the top of the vertical section of the L-shaped block (13), and the clamping portion (15) is attached to the outer wall of the rubber tube (6). A number of upper positioning grooves (16) are formed at the top of the strip-shaped elastic piece (12), and the inner wall of the upper positioning groove (16) is attached to the clamping portion (15). An inclined guiding surface one (18) is arranged at the top of the clamping portion (15). A number of lower positioning grooves (17) are formed at the bottom of the strip-shaped elastic piece (12), and the inner wall of the lower positioning groove (17) is attached to the convex portion (14).

2. The drone material spraying device according to claim 1, wherein Positioning columns (20) are fixed at both ends of the strip-shaped elastic piece (12). A vertical groove (21) is formed at the top of the connecting block (10), and the positioning columns (20) are inserted into the inside of the vertical groove (21), and the length of the positioning columns (20) is greater than the width of the strip-shaped elastic piece (12).

3. The drone material spraying device according to claim 2, wherein, The width of the upper positioning groove (16) near the connecting block (10) is greater than the width of the upper positioning groove (16) far from the connecting block (10). The width of the lower positioning groove (17) near the connecting block (10) is greater than the width of the lower positioning groove (17) far from the connecting block (10).

4. The drone material spraying device according to claim 1, wherein, A connecting member (22) is arranged on the side of the strip-shaped elastic piece (12) away from the rubber tube (6). The connecting member (22) is used to increase the connection tightness between the strip-shaped elastic piece (12) and the L-shaped block (13).

5. The drone material spraying device according to claim 4, characterized in that, The connecting member (22) includes two rubber bands (23) fixed to the side of the strip-shaped elastic piece (12) away from the rubber tube (6). The opposite ends of the two rubber bands (23) are commonly connected with a clamping block (24). A square groove (30) is formed in the side surface of the L-shaped block (13) away from the connecting block (10). The rubber band (23) is attached to the inner wall of the square groove (30). A clamping groove (29) is formed in the side surface of the inner wall of the square groove (30). The clamping block (24) is clamped inside the clamping groove (29). An inclined guiding surface two (19) is provided at the top of the vertical section of the L-shaped block (13), and an inclined guiding surface three (25) is provided at the bottom of the clamping block (24).

6. The drone material spraying device according to claim 5, characterized in that The rubber band (23) includes an adhesive part (26) and a connecting part (27) connected in sequence. The adhesive part (26) is adhesively bonded to the side of the strip-shaped elastic piece (12) away from the rubber tube (6). One end of the connecting part (27) away from the adhesive part (26) is fixedly connected to the side surface of the clamping block (24).

7. The drone material spraying device according to claim 6, characterized in that, A plurality of tearing openings (28) are provided at one end of the connecting part (27) away from the adhesive part (26), and anti-slip lines are provided on the side surface of the adhesive part (26).

8. The drone material spraying device according to claim 1, wherein A connecting ring (9) is fixed to the telescopic end of the driving member (8). One side of the connecting ring (9) close to the connecting block (10) is fixedly connected to the side surface of the connecting block (10).

9. A drone, which is applied to a drone material spraying device as described in any one of claims 1-8, characterized in that, It includes a drone body (1). A liquid storage tank (2) is installed at the bottom of the drone body (1). A camera (3) is installed at the bottom of the drone body (1). The liquid storage tank (2) is located below the camera (3).

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