Unmanned aerial vehicle material spraying device and unmanned aerial vehicle

Abstract

The invention provides an unmanned aerial vehicle material spraying device and an unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicles. Comprising a liquid storage tank, the liquid storage tank is used for storing fire extinguishing liquid, a spraying mechanism is installed at a water outlet in the bottom of the liquid storage tank and comprises a connector fixed to the water outlet in the bottom of the liquid storage tank, a rubber pipe is detachably connected to the bottom of the connector, and a driving structure is arranged on the side face of the rubber pipe and comprises a connecting block fixed to the side face of the rubber pipe; the number of the connecting blocks is two. Through the arrangement of the rubber pipe and the driving piece, when the ignition area is large, the driving piece extends, the rubber pipe is pulled through the connecting block, the rubber pipe is deformed into a flat mouth shape, originally-sprayed water-column-shaped fire extinguishing liquid is converted into a strip shape, meanwhile, the dispersion degree of the fire extinguishing liquid is greatly improved in cooperation with movement of the unmanned aerial vehicle body, and the fire extinguishing effect is improved. Therefore, large-area fire disasters can be extinguished quickly and effectively, and fire spreading can be restrained in time.

Description

Technical Field

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

[0002] When the fire-fighting drone is used in a forest environment, when a fire occurs at a certain location in the forest, the fire-fighting drone is launched. A liquid storage tank is installed at the bottom of the body of the fire-fighting drone, and fire-extinguishing liquid is stored in the liquid storage tank. The camera on the fire-fighting drone is used to provide an observation field of view, so that the fire-fighting drone can accurately fly above the fire point, with the nozzle facing the fire point. The water pump is started, and the water pump transports the fire-extinguishing liquid in the liquid storage tank through a pipeline to the nozzle and sprays it from the nozzle position. The sprayed fire-extinguishing liquid in the form of a water column falls to the fire point to achieve fire extinguishing. The liquid storage tank, water pump, pipeline and nozzle constitute the material spraying device of the drone.

[0003] When a common fire-fighting drone is in operation, it flies to the top of the fire point and sprays fire-extinguishing liquid through a nozzle, relying on the fire-extinguishing liquid to fall to the fire point to extinguish the fire. However, the fire-extinguishing liquid sprayed from the nozzle is generally in the form of a water column and is relatively concentrated. Once the fire area expands, this water column-like flame-retardant liquid has a limited degree of dispersion after falling to the ground, resulting in difficulty in quickly and effectively extinguishing the fire when facing a fire point with a large fire area, and difficulty in controlling the spread of the fire in time. Therefore, the present application provides a drone material spraying device and a drone to meet the needs. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a UAV material spraying device and a UAV to solve the problem that when the fire area expands, the fire extinguishing liquid in the form of a water column and relatively concentrated sprayed by the common fire-fighting UAV is difficult to extinguish the fire quickly and effectively, making it difficult to control the spread of the fire in time.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: A material spraying device for an unmanned aerial vehicle comprises a liquid storage tank, the liquid storage tank is used to store fire extinguishing liquid, a spraying mechanism is installed at a water outlet at the bottom of the liquid storage tank, the spraying mechanism comprises 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 comprises a connecting block fixed on the side of the rubber tube, the number of the connecting blocks is two, a driving member is installed at the bottom of the liquid storage tank through a mounting frame, the driving member drives the rubber tube to deform through the connecting block when it is extended and retracted, and a water pump is installed inside the liquid storage tank; When the fire area is large, the driving member extends and pulls the rubber tube through the connecting block, causing the rubber tube to deform and increase the spraying area of ​​the fire extinguishing liquid. When the fire area is small, the driving member shortens and the rubber tube returns to its original position, reducing the spraying area of ​​the fire extinguishing liquid.

[0006] Preferably, an elastic component is installed on the outer wall of the rubber tube, and the elastic component includes two strip spring pieces that are attached to the outer wall of the rubber tube, and positioning columns are fixed at both ends of the strip spring pieces. A vertical groove is opened on the top of the connecting block, and the positioning column is inserted into the interior of the vertical groove. The length of the positioning column is greater than the width of the strip spring piece, and a plurality of L-shaped blocks are fixed to the outer wall of the rubber tube. The L-shaped blocks are used for positioning the strip spring pieces when they are attached to the outer wall of the rubber tube.

[0007] Preferably, the top of the horizontal section of the L-shaped block is fitted with the bottom of the strip spring piece, the side surface of the vertical section of the L-shaped block is fitted with the side of the strip spring piece away from the rubber tube, the top of the horizontal section of the L-shaped block is provided with a protrusion, the protrusion is fixed to the outer wall of the rubber tube, the top of the vertical section of the L-shaped block is provided with a clamping part, the clamping part is fitted with the outer wall of the rubber tube, a plurality of upper positioning grooves are provided at the top of the strip spring piece, the inner wall of the upper positioning groove is fitted with the clamping part, the top of the clamping part is provided with an inclined guiding surface, and a plurality of lower positioning grooves are provided at the bottom of the strip spring piece, the inner wall of the lower positioning groove is fitted with the protrusion.

[0008] Preferably, the width of the upper positioning groove near the connecting block is greater than the width of the upper positioning groove far 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 far from the connecting block.

[0009] Preferably, a connecting piece is provided on a side of the strip spring piece away from the rubber tube, and the connecting piece is used to increase the tightness of the connection between the strip spring piece and the L-shaped block.

[0010] Preferably, the connecting piece includes two rubber belts fixed to the side of the strip spring piece away from the rubber tube, the opposite ends of the two rubber belts are commonly connected with a clamping block, a square groove is provided on the side of the L-shaped block away from the connecting block, the rubber belt is fitted with the inner wall of the square groove, a clamping groove is provided on the side of the inner wall of the square groove, the clamping block is clamped inside the clamping groove, an inclined guide surface 2 is provided on the top of the vertical section of the L-shaped block, and an inclined guide surface 3 is provided on the bottom of the clamping block.

[0011] Preferably, the rubber belt comprises an adhesive portion and a connecting portion which are connected in sequence, the adhesive portion is glued to a side of the strip spring piece away from the rubber tube, and an end of the connecting portion away from the adhesive portion is fixedly connected to a side surface of the clamping block.

[0012] Preferably, a plurality of tearing openings are provided at one end of the connecting portion away from the bonding portion, and anti-slip grooves are provided on the side surface of the bonding portion.

[0013] Preferably, a connecting ring is fixed to the telescopic end of the driving member, and a side of the connecting ring close to the connecting block is fixedly connected to the side surface of the connecting block.

[0014] A drone is applied to the above-mentioned drone material spraying device, including a drone body, a liquid storage tank 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.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, through the setting of the rubber tube and the driving part, when the fire area is large, the driving part is extended, and the rubber tube is pulled through the connecting block to deform it into a flat mouth shape, thereby transforming the originally sprayed water column-shaped fire extinguishing liquid into a strip shape. At the same time, in conjunction with the movement of the drone body, the dispersion of the fire extinguishing liquid is greatly improved, thereby being able to quickly and effectively extinguish large-scale fires and promptly curb the spread of fire.

[0016] By setting the strip spring pieces, in the process of the rubber tube changing from a round shape to a flat mouth shape, the connecting block synchronously pulls the rubber tube and the strip spring pieces to make them deform together. When the two strip spring pieces are deformed, they approach each other, squeeze the rubber tube, further promote the deformation of the rubber tube, and ensure that the deformation of the rubber tube is stable and reliable. When the fire point is relatively concentrated, the driving member is shortened and the connecting block no longer pulls the rubber tube. At this time, the rubber tube returns to its original state under the joint action of its own elastic force and the resetting elastic force of the strip spring pieces. In the process of resetting the rubber tube, it not only relies on its own elastic force to reset, but also relies on the elastic force of the strip spring pieces to assist the resetting of the rubber tube, thereby effectively extending the service life of the rubber tube. In addition, when the strip spring pieces are reset, the rubber tube is pulled by the L-shaped block to ensure that the rubber tube can be accurately restored to a round state. At the same time, in the process of resetting the rubber tube, the driving member shortens and drives the connecting block to move, and it also has an extrusion effect on the rubber tube, further assisting the resetting of the rubber tube. When the rubber tube is reset, the fire extinguishing liquid sprayed from the rubber tube is in the form of a concentrated water column, which can quickly and effectively extinguish the concentrated fire point.

[0017] By setting the L-shaped block and the positioning column, the strip spring piece needs to be replaced after being used for a period of time. When replacing, the strip spring piece is squeezed in the direction of the rubber tube to separate it from the vertical section of the L-shaped block, and then the strip spring piece is moved upward to disengage the positioning column from the vertical groove of the connecting block to complete the disassembly. When installing, first insert the positioning column at the end of the strip spring piece into the vertical groove of the connecting block, and then move the strip spring piece downward to insert the strip spring piece between the vertical section of the L-shaped block and the rubber tube. At the same time, the design of the raised part and the clamping part on the L-shaped block ensures the accuracy and reliability of the installation position of the strip spring piece, so that it can play a stable role at the rubber tube.

[0018] Through the setting of the rubber belt and the card block, after the strip spring piece is installed, the elastic force of the rubber belt acts on the card block to be stuck in the card slot of the L-shaped block. Through the cooperation of the rubber belt and the card block, the strip spring piece is prevented from separating from the L-shaped block during deformation or resetting, further ensuring that the strip spring piece can stably play its role at the rubber tube.

[0019] By setting the guide surface two and the guide surface three, when the strip spring piece is inserted between the vertical section of the L-shaped block and the rubber tube, the strip spring piece drives the clamping block to move downward at the same time. When the clamping block moves downward, the guide surface two on the L-shaped block squeezes the guide surface three at the bottom of the clamping block, so that the clamping block moves away from the rubber tube and drives the rubber belt to be in a stretched state. The clamping block moves away from the rubber tube and moves downward with the strip spring piece. When the strip spring piece is installed, the positions of the clamping block and the clamping slot correspond to each other, and the clamping block is automatically clamped in the clamping slot under the elastic force of the rubber belt, thereby realizing stable installation of the strip spring piece and the L-shaped block. When installing the strip spring piece, there is no need to pinch and pull the clamping block by hand separately, so that the clamping block can automatically move downward under the cooperation of the guide surface two and the guide surface three, thereby further improving the installation convenience of the strip spring piece.

[0020] By setting the tearing opening, when removing the strip spring piece, the adhesive part of the rubber belt is pressed with fingers to deform the strip spring piece toward the inside of the rubber sleeve, and at the same time, the adhesive part pulls the connecting part. Since the tearing opening reduces the connection strength between the connecting part and the card block, the connection between the connecting part and the card block is easier to break. After breaking, it is easy to take the card block out of the card slot, which further improves the convenience of disassembly of the strip spring piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure at the bottom of the liquid storage barrel of the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the driving member of the present invention;

[0024] Figure 4 It is a cross-sectional view of the rubber tube of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the rubber tube of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the raised portion of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the strip spring piece of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the connection block of the present invention;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the card slot of the present invention;

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the tearing mouth of the present invention;

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the upper positioning groove of the present invention;

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the card block of the present invention;

[0033] Fig.13 It is a schematic diagram of the three-dimensional structure of the clamping part of the present invention.

[0034] In the figure: 1. UAV body; 2. Liquid storage tank; 3. Camera; 4. Spraying mechanism; 5. Joint; 6. Rubber tube; 7. Driving structure; 8. Driving member; 9. Connecting ring; 10. Connecting block; 11. Elastic component; 12. Strip spring; 13. L-shaped block; 14. Raised portion; 15. Clamping portion; 16. Upper positioning groove; 17. Lower positioning groove; 18. Guide surface one; 19. Guide surface two; 20. Positioning column; 21. Vertical groove; 22. Connecting member; 23. Rubber belt; 24. Clamping block; 25. Guide surface three; 26. Adhesive portion; 27. Connecting portion; 28. Tear; 29. ​​Clamping slot; 30. Square slot; 31. Water pump.

[0035] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0036] The following is a detailed description of 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 is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0037] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0038] 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.

[0039] like Figure 1-Figure 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; 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.

[0040] 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, and the elastic component 11 includes two strip spring 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 spring pieces 12. A vertical groove 21 is opened on the top of the connecting block 10. The positioning column 20 is inserted into the interior of the vertical groove 21, and the length of the positioning column 20 is greater than the width of the strip spring piece 12. A plurality of L-shaped blocks 13 are fixed to the outer wall of the rubber tube 6. The L-shaped blocks 13 are used for positioning the strip spring piece 12 when it is attached to the outer wall of the rubber tube 6. When the rubber tube 6 is deformed under the pulling of the connecting block 10, the connecting block 10 synchronously pulls the strip spring piece 12 through the positioning column 20, so that it deforms together with the rubber tube 6. The two strip spring pieces 12 approach each other during the deformation process, squeezing the rubber tube 6, further promoting the deformation of the rubber tube 6, and ensuring that the deformation of the rubber tube 6 is stable and reliable. At the same time, the cooperation between the positioning column 20 and the vertical groove 21, and the positioning of the strip spring piece 12 by the L-shaped block 13 ensure that the position of the strip spring piece 12 on the outer wall of the rubber tube 6 is accurate, thereby stably playing its function of assisting the deformation and resetting of the rubber tube 6. In addition, the length of the positioning column 20 is greater than the width of the strip spring piece 12. When installing the strip spring 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 spring piece 12, thereby facilitating the subsequent installation of the strip spring piece 12.

[0041] like Figure 6 and Fig.13 As shown, in this embodiment, the top of the horizontal section of the L-shaped block 13 is in contact with the bottom of the strip spring piece 12, the side of the vertical section of the L-shaped block 13 is in contact with the side of the strip spring piece 12 away from the rubber tube 6, the top of the horizontal section of the L-shaped block 13 is provided with a protrusion 14, the protrusion 14 is fixed to the outer wall of the rubber tube 6, the top of the vertical section of the L-shaped block 13 is provided with a clamping portion 15, the clamping portion 15 is in contact with the outer wall of the rubber tube 6, the top of the strip spring piece 12 is provided with a plurality of upper positioning grooves 16, the inner wall of the upper positioning groove 16 is in contact with the clamping portion 15, and the top of the clamping portion 15 is provided with an inclined guide surface 18. A plurality of lower positioning grooves 17 are provided at the bottom of the strip spring piece 12, and the inner wall of the lower positioning groove 17 is fitted with the protrusion 14. The L-shaped block 13 and the strip spring piece 12 are closely fitted through the protrusion 14 and the lower positioning groove 17, and the clamping portion 15 and the upper positioning groove 16, thereby ensuring that the installation position of the strip spring piece 12 is stable and reliable, so that it can play a stable role at the rubber tube 6. The guide surface 18 plays a guiding role when installing the strip spring piece 12, facilitating the accurate insertion of the strip spring 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 convenience of installation of the strip spring piece 12.

[0042] like Fig.11As shown, in the present 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 away 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 away 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 away from the connecting block 10. Its function is that when the strip spring piece 12 and the rubber tube 6 are deformed at the same time, 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 away from the connecting block 10, so as to prevent the strip spring piece 12 and the rubber tube 6 from interfering with each other when they are deformed. The design that the width of the lower positioning groove 17 near the connecting block 10 is greater than the width of the lower positioning groove 17 away from the connecting block 10 has the same function as described above.

[0043] like Figure 5-Figure 7 As shown, in the present embodiment, a connector 22 is provided on the side of the strip spring piece 12 away from the rubber tube 6, and the connector 22 is used to increase the tightness of the connection between the strip spring piece 12 and the L-shaped block 13. During the frequent deformation and resetting of the rubber tube 6, the connector 22 prevents the strip spring piece 12 from separating from the L-shaped block 13, thereby ensuring that the strip spring piece 12 can always stably assist the rubber tube 6 in working.

[0044] like Figure 5 , Figure 6 , Figure 7 and Fig.10 As shown, in this embodiment, the connecting member 22 includes two rubber belts 23 fixed to the side of the strip spring piece 12 away from the rubber tube 6, and the opposite ends of the two rubber belts 23 are commonly connected with a clamping block 24. A square groove 30 is provided on the side of the L-shaped block 13 away from the connecting block 10, and the rubber belt 23 is in contact with the inner wall of the square groove 30. A clamping groove 29 is provided on the side of the inner wall of the square groove 30, and the clamping block 24 is clamped inside the clamping groove 29. The top of the vertical section of the L-shaped block 13 is provided with an inclined guide surface 29, and the bottom of the clamping block 24 is provided with an inclined guide surface 3 25. When installing the strip spring piece 12, it is inserted between the L-shaped block 13 and the rubber tube 6, and the strip spring piece 12 drives the clamping block 24 moves downward, and the guiding surface 2 19 on the L-shaped block 13 squeezes the guiding surface 3 25 at the bottom of the card block 24, so that the card block 24 moves away from the rubber tube 6 and drives the rubber belt 23 to stretch. When the strip spring piece 12 is installed, the card block 24 corresponds to the position of the card slot 29. The card block 24 is automatically stuck in the card slot 29 under the elastic force of the rubber belt 23, realizing the close connection between the strip spring piece 12 and the L-shaped block 13. There is no need to manually operate the card block 24 separately, which greatly improves the installation convenience of the strip spring piece 12, and at the same time ensures the stability of the connection between the strip spring piece 12 and the L-shaped block 13, and effectively prevents the strip spring piece 12 from separating from the L-shaped block 13 during operation.

[0045] like Figure 7 and Fig.10 As shown, in the present embodiment, the rubber belt 23 includes an adhesive portion 26 and a connecting portion 27 which are connected in sequence. The adhesive portion 26 is glued to the side of the strip spring piece 12 away from the rubber tube 6. The end of the connecting portion 27 away from the adhesive portion 26 is fixedly connected to the side of the clamping block 24. The adhesive portion 26 is used to increase the contact area between the connecting portion 27 and the strip spring piece 12, thereby improving the connection stability between the rubber belt 23 and the strip spring piece 12. The connecting portion 27 is used to connect the clamping block 24. Under the elastic force of the rubber belt 23, the clamping block 24 can accurately cooperate with the clamping groove 29 on the L-shaped block 13, thereby realizing the close connection between the strip spring piece 12 and the L-shaped block 13, and providing guarantee for the stable operation of the entire elastic component 11.

[0046] like Fig.10 As shown, in the present embodiment, a plurality of tearing openings 28 are provided at one end of the connection portion 27 away from the bonding portion 26, and anti-skid grooves are provided on the side of the bonding portion 26. When removing the strip spring piece 12, the bonding portion 26 of the rubber belt 23 is pressed to deform the strip spring piece 12 toward the inside of the rubber tube 6, and the bonding portion 26 pulls the connection portion 27. Since the tearing openings 28 reduce the connection strength between the connection portion 27 and the block 24, the connection between the connection portion 27 and the block 24 is easier to break. After breaking, the block 24 can be easily removed from the card slot 29, thereby improving the convenience of disassembly of the strip spring piece 12, and the anti-skid grooves on the side of the bonding portion 26 increase the friction when the operator presses, making it convenient to operate the rubber belt 23.

[0047] like Figure 3 As shown, in the present embodiment, a connecting ring 9 is fixed to the telescopic end of the driving member 8, and the side of the connecting ring 9 close to the connecting block 10 is fixedly connected to the side of the connecting block 10. The connecting ring 9 plays the role of 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. In the process of extending or shortening the driving member 8, the connecting block 10 is driven to move accurately through the connecting ring 9, thereby realizing the pulling or loosening of the rubber tube 6, controlling the deformation and resetting of the rubber tube 6, and ensuring that the entire spraying device can flexibly adjust the spraying pattern and coverage area of ​​the fire extinguishing liquid according to the size of the fire area, thereby improving the efficiency and effect of the fire extinguishing operation.

[0048] A drone is applied to the above-mentioned drone material spraying device, including a drone body 1, a liquid storage tank 2 installed at the bottom of the drone body 1, a camera 3 installed at the bottom of the drone body 1, and the liquid storage tank 2 is located below the camera 3. The drone body 1 serves as a carrier of the entire device, realizing rapid arrival and flexible movement in different fire areas. The camera 3 monitors the fire area in real time, provides intuitive fire information to the operator, and helps the operator to accurately judge key parameters such as the size of the fire and the fire area, thereby controlling the extension and retraction of the driving member 8 according to the actual situation, adjusting the shape of the rubber tube 6 and the spraying state of the fire extinguishing liquid, and realizing efficient fire extinguishing.

[0049] Working principle: For a fire area with a large fire area, the drone body 1 flies above the fire area, and the water pump 31 in the liquid storage tank 2 is started to transport the fire extinguishing liquid to the rubber tube 6 through the joint 5. At the same time, the push rod of the driving member 8 is extended, thereby driving the connecting block 10 to move away from the rubber tube 6 through the connecting ring 9, and then pulling the rubber tube 6 to deform it into a flat mouth shape. At the same time, the connecting block 10 synchronously pulls the two strip-shaped spring pieces 12 through the positioning column 20, so that the strip-shaped spring pieces 12 and the rubber tube 6 are deformed synchronously, and the two strip-shaped spring pieces 12 approach each other during the deformation process, squeezing the rubber tube 6, further promoting the deformation of the rubber tube 6, and ensuring that the deformation of the rubber tube 6 is stable and reliable. The fire extinguishing liquid originally sprayed in the shape of a water column is transformed into a strip shape, and combined with the movement of the drone body 1, the dispersion of the fire extinguishing liquid is greatly improved, thereby quickly and effectively extinguishing large-area fires and curbing the spread of fire in time; When the fire points are relatively concentrated, the push rod of the driving member 8 shortens and drives the connecting block 10 to move toward the inner direction 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 shape under the combined action of its own elastic force and the resetting elastic force of the strip spring piece 12. When the strip spring piece 12 is reset, the rubber tube 6 is pulled by the L-shaped block 13 to ensure that it is accurately restored to a circular state. At the same time, the driving member 8 shortens and drives the connecting block 10 to move toward the inner direction of the rubber tube 6. The connecting block 10 squeezes the rubber tube 6, further assisting the resetting of the rubber tube 6. The fire extinguishing liquid sprayed from the reset rubber tube 6 is in the shape of a concentrated water column, which can quickly and effectively extinguish the concentrated fire points. After the strip spring piece 12 has been used for a period of time, its elasticity may be gradually reduced due to multiple deformation and reset, so it needs to be replaced. When replacing, press the adhesive portion 26 of the rubber band 23 with your fingers to deform the strip spring piece 12 toward the inside of the rubber tube 6. At the same time, the adhesive portion 26 pulls the connecting portion 27. The design of the tearing opening 28 reduces the connection strength between the connecting portion 27 and the card block 24, making it easier to break the connection between the connecting portion 27 and the card block 24. After breaking, it is convenient to remove the card block 24 from the card slot 29, and then continue to squeeze the strip spring piece 12 toward the rubber tube 6 to separate it from the vertical section of the L-shaped block 13, and at the same time separate the upper positioning groove 16 from the card connection portion 15 of the L-shaped block 13, and separate the lower positioning groove 17 from the protruding portion 14 of the L-shaped block 13, and then move the strip spring piece 12 upward to separate the positioning column 20 from the vertical slot 21 of the connecting block 10, and the disassembly is completed. When removing and installing, first insert the positioning column 20 at the end of the strip spring piece 12 into the vertical groove 21 of the connecting block 10, and then move the strip spring piece 12 downward. The strip spring piece 12 drives the clamping block 24 to move downward through the rubber belt 23. When the clamping block 24 moves downward, the guide surface 219 on the L-shaped block 13 squeezes the guide surface 325 at the bottom of the clamping block 24, so that the clamping block 24 moves away from the rubber tube 6 and drives the rubber belt 23 to be in a stretched state. When the bottom of the strip spring piece 12 fits with the horizontal section of the L-shaped block 13, and the protrusion 14 is inserted into the lower positioning groove 17, and the clamping portion 15 is clamped in the upper positioning groove 16, the installation of the strip spring piece 12 is completed. When the installation of the strip spring piece 12 is completed, the position of the clamping block 24 corresponds to the clamping groove 29. The clamping block 24 is automatically clamped in the clamping groove 29 under the elastic force of the rubber belt 23, so that the strip spring piece 12 and the L-shaped block 13 are tightly connected. After the strip spring piece 12 is installed, the clamping block 24 is clamped in the clamping groove 29 of the vertical section on the L-shaped block 13, so as to realize the close connection between the strip spring piece 12 and the L-shaped block 13, thereby preventing the strip spring piece 12 from being separated from the L-shaped block 13 during the deformation or resetting process, thereby ensuring that the strip spring piece 12 can stably play its role during the deformation or resetting process of the rubber tube 6; When the rubber tube 6 needs to be replaced after being used for a long time, during replacement, first remove the strip spring piece 12 from the rubber sleeve according to the above-mentioned disassembly steps of the strip spring piece 12, then remove the bolts used to connect the connecting ring 9 with the connecting block 10, and then remove the bolts at the round sleeve at the top of the rubber tube 6, and the rubber sleeve can be disassembled. 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 with the connecting ring 9 with bolts, and then repeat the above-mentioned strip spring piece 12 installation steps to install the strip spring piece 12 on the new rubber tube 6.

[0050] The present invention encompasses any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A drone material spraying device, comprising a liquid storage tank (2), characterized in that: 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) includes a joint (5) fixed at the water outlet at the bottom of the liquid storage tank (2). The bottom of the joint (5) is detachably connected to a rubber tube (6). A driving structure (7) is provided on the side of the rubber tube (6). The driving structure (7) includes a connecting block (10) fixed to 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. When the driving member (8) is extended or retracted, it drives the rubber tube (6) 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) 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.

2. The drone material spraying device according to claim 1, characterized in that: The outer wall of the rubber tube (6) is provided with an elastic component (11), the elastic component (11) comprising two strip-shaped spring sheets (12) attached to the outer wall of the rubber tube (6), positioning columns (20) being fixed at both ends of the strip-shaped spring sheets (12), a vertical groove (21) being provided at the top of the connecting block (10), the positioning columns (20) being inserted into the interior of the vertical groove (21), and the length of the positioning columns (20) being greater than the width of the strip-shaped spring sheets (12), and a plurality of L-shaped blocks (13) being fixed to the outer wall of the rubber tube (6), the L-shaped blocks (13) being used for positioning the strip-shaped spring sheets (12) when attached to the outer wall of the rubber tube (6).

3. The drone material spraying device according to claim 2, characterized in that: The top of the horizontal section of the L-shaped block (13) is fitted with the bottom of the strip spring sheet (12); the side of the vertical section of the L-shaped block (13) is fitted with the side of the strip spring sheet (12) away from the rubber tube (6); a protrusion (14) is provided at the top of the horizontal section of the L-shaped block (13); the protrusion (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); the clamping portion (15) is fitted with the outer wall of the rubber tube (6); a plurality of upper positioning grooves (16) are provided at the top of the strip spring sheet (12); the inner wall of the upper positioning groove (16) is fitted with the clamping portion (15); an inclined guide surface (18) is provided at the top of the clamping portion (15); a plurality of lower positioning grooves (17) are provided at the bottom of the strip spring sheet (12); the inner wall of the lower positioning groove (17) is fitted with the protrusion (14).

4. The drone material spraying device according to claim 3, characterized in that: The width of the upper positioning groove (16) close to the connection block (10) is greater than the width of the upper positioning groove (16) away from the connection block (10), and the width of the lower positioning groove (17) close to the connection block (10) is greater than the width of the lower positioning groove (17) away from the connection block (10).

5. The drone material spraying device according to claim 3, characterized in that: A connecting piece (22) is provided on the side of the strip-shaped elastic piece (12) away from the rubber tube (6), and the connecting piece (22) is used to increase the tightness of the connection between the strip-shaped elastic piece (12) and the L-shaped block (13).

6. The drone material spraying device according to claim 5, characterized in that: The connecting member (22) comprises two rubber bands (23) fixed to a side of the strip spring sheet (12) away from the rubber tube (6); opposite ends of the two rubber bands (23) are commonly connected to a clamping block (24); a square groove (30) is provided on the side of the L-shaped block (13) away from the connecting block (10); the rubber band (23) is in contact with the inner wall of the square groove (30); a clamping groove (29) is provided on the side of the inner wall of the square groove (30); the clamping block (24) is clamped inside the clamping groove (29); a second inclined guide surface (19) is provided at the top of the vertical section of the L-shaped block (13); and a third inclined guide surface (25) is provided at the bottom of the clamping block (24).

7. The drone material spraying device according to claim 6, characterized in that: The rubber band (23) comprises an adhesive portion (26) and a connecting portion (27) which are connected in sequence, the adhesive portion (26) being glued to a side of the strip spring (12) away from the rubber tube (6), and an end of the connecting portion (27) away from the adhesive portion (26) being fixedly connected to a side surface of the clamping block (24).

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

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

10. A drone, applied to a drone material spraying device as claimed in any one of claims 1 to 9, characterized in that: The invention comprises an unmanned aerial vehicle body (1), a liquid storage tank (2) mounted on the bottom of the unmanned aerial vehicle body (1), a camera (3) mounted on the bottom of the unmanned aerial vehicle body (1), and the liquid storage tank (2) located below the camera (3).

Images