Lateral folding machine arm type portable fire-fighting unmanned aerial vehicle

Abstract

The present application relates to the technical field of unmanned aerial vehicle, and disclose a lateral folding machine arm type portable fire-fighting unmanned aerial vehicle, aiming at solving the problem of the adaptation of the portability and fire-extinguishing range of the fire-fighting unmanned aerial vehicle, comprising a four-rotor explosion-proof unmanned aerial vehicle, the bottom take-off support is provided with a scissor type folding arm on both sides, the bottom is fixed with a water distribution pipe through a pipeline buckle, the water distribution pipe is inserted with a center telescopic pipe of a piston at both ends, the piston is linked with the folding arm through a positioning pin, the center telescopic pipe is connected with multiple groups of movable fire-extinguishing pipes and telescopic pipes, the telescopic pipe is provided with a spray port at the end, the inside is provided with a blocking ring and a conical blocking block, and a reset spring is arranged between the blocking blocks, during operation, the high-pressure water source is connected through the quick connection buckle, the water pressure pushes the piston to drive the folding arm to unfold, the telescopic pipe is pulled synchronously through the positioning pin, the blocking block is pushed away by the top rod to open the water flow channel, and the spray port sprays water, the present application realizes the automatic unfolding of the folding arm and the water spraying synchronously by water pressure, and the portability and fire-extinguishing coverage range are considered, and the emergency efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicles, in particular to a lateral folding machine arm type portable fire-fighting unmanned aerial vehicle. BACKGROUND

[0002] With the acceleration of urbanization and the improvement of fire safety awareness, the application of unmanned aerial vehicles in the field of fire fighting is increasingly valued. Traditional fire-fighting equipment is often bulky and complex to operate, making it difficult to quickly deploy to complex terrain or high-altitude fire scenes. Although some existing fire-fighting unmanned aerial vehicles can carry fire extinguishing agents for aerial operations, they still have limitations in portability, deployment speed and fire extinguishing efficiency.

[0003] For example, the existing fire-fighting unmanned aerial vehicles usually have fixed external dimensions when carrying fire extinguishing devices, which makes them less flexible in storage, transportation and rapid deployment. In narrow spaces or emergency situations requiring rapid response, the large size of the unmanned aerial vehicles limits their operating range and efficiency. In addition, some fire-fighting unmanned aerial vehicles may require additional mechanical structures to adjust the direction and range of fire extinguishing medium injection, increasing the complexity and failure rate of the system. SUMMARY

[0004] The technical problem to be solved by the present application is the shortcomings of existing fire-fighting unmanned aerial vehicles in portability, deployment speed and fire extinguishing efficiency. To this end, the present application proposes a lateral folding machine arm type portable fire-fighting unmanned aerial vehicle.

[0005] In order to achieve the above object, the following technical scheme is adopted in the present application: the lateral folding machine arm type portable fire-fighting unmanned aerial vehicle comprises: a four-rotor explosion-proof unmanned aerial vehicle, a take-off and landing support is fixedly connected to the bottom of the four-rotor explosion-proof unmanned aerial vehicle, a group of folding arms is fixedly connected to the two sides of the take-off and landing support, the folding arms are used to realize size reduction when the equipment is stored and range expansion when the equipment is operated, and the folding arms comprise first folding arms and second folding arms, two groups or more of the first folding arms and the second folding arms are sequentially rotationally connected, the two groups or more of the first folding arms and the second folding arms are mutually crossed to form a scissor structure, and a central rotating shaft is arranged at the central crossing position, the central rotating shaft is used to realize relative rotation to complete folding and unfolding actions; a water distribution pipe is arranged at the bottom of the take-off and landing support, a central telescopic pipe is inserted into each end of the water distribution pipe, a piston is connected to the end of the central telescopic pipe, the piston is in sliding sealing cooperation with the inner wall of the water distribution pipe, and the piston can move along the pipe axis to transmit driving force under the action of a high-pressure water source, a first positioning pin is fixedly connected to the central rotating shaft, the first positioning pin is fixedly connected to the central telescopic pipe, and the first positioning pin is used to transmit the driving force of the piston to the folding arms; two groups or more of movable fire-fighting pipes are sequentially connected to one end of the central telescopic pipe through corrugated hoses, the corrugated hoses are adapted to folding arm movement to keep water flow through, a first telescopic pipe and a second telescopic pipe are respectively inserted into the two ends of the movable fire-fighting pipe, a first spout and a second spout are respectively arranged at the ends of the first telescopic pipe and the second telescopic pipe, and the first spout and the second spout are used to spray fire-extinguishing medium; a second positioning pin and a third positioning pin are fixedly connected to the ends of the first folding arms and the second folding arms, the second positioning pin is fixedly connected to the first telescopic pipe, the third positioning pin is fixedly connected to the second telescopic pipe, and the second positioning pin and the third positioning pin realize linkage telescoping of the folding arms and the fire-fighting pipe; a first blocking ring is arranged on the inner side of the first telescopic pipe, the first blocking ring is fixedly connected to the movable fire-fighting pipe, a first blocking block is tightly inserted into the first blocking ring, the first blocking block is used to block the water flow passage when the folding arms are not unfolded, a first jack rod is fixedly connected to the end of the first telescopic pipe, and the first jack rod is used to push the first blocking block when the folding arms are unfolded; a second blocking ring is arranged on the inner side of the second telescopic pipe, a second blocking block is tightly inserted into the second blocking ring, a second jack rod is fixedly connected to the end of the second telescopic pipe, and the second blocking ring and the second jack rod realize synchronous opening and closing of the water flow passage.

[0006] Further, the folding arms are provided with two layers, the two folding arms are parallel to each other, and the two layers of folding arms are connected through the first positioning pin, the second positioning pin and the third positioning pin in sequence, the double-layer structure can enhance the structural stability of the unfolded folding arms, ensure synchronous telescoping of the fire-fighting pipe, and improve the load bearing capacity during high-pressure water spraying operation.

[0007] Further, the folding arms are made of lightweight aluminum alloy material, which can reduce the weight of the unmanned aerial vehicle as a whole to reduce flight energy consumption, while ensuring the structural strength during folding and unfolding of the folding arms, and taking into account portability and operation reliability.

[0008] Further, the take-off and landing support is fixedly connected with a group of connecting fixing blocks on both sides, a fixed slot is formed on the connecting fixing block, a guide rod connecting block is arranged on one side of the connecting fixing block, a fixed plug is integrally arranged on the guide rod connecting block, the fixed plug is inserted into the fixed slot and fixed by bolts, and a detachable connection structure is formed to facilitate maintenance and replacement; a sliding guide rod is fixedly connected through the guide rod connecting block, a first connecting block and a second connecting block are slidably connected on the sliding guide rod, the first connecting block is rotatably connected with the first folding arm, and the second connecting block is rotatably connected with the second folding arm; the sliding guide rod provides guidance and limiting for the movement of the folding arm, and ensures the stability of the trajectory.

[0009] Further, the sliding guide rod is provided with two, and the two sliding guide rods are arranged in parallel and vertically, forming a bidirectional guiding and restraining structure, which can effectively prevent the folding arm from deflecting upward and downward when being folded and unfolded, and ensure the synchronous precision of the movement of the folding arm and the fire extinguishing pipe.

[0010] Further, the bottom of the take-off and landing support is fixedly connected with a fixed support through bolts, the fixed support is fixedly connected with a pipe buckle, and the pipe buckle is connected with a water distribution pipe. This fixed structure can avoid displacement of the water distribution pipe due to water flow impact or vibration when the unmanned aerial vehicle is flying and performing water spraying operation, and ensure the stability of water pressure transmission.

[0011] Further, a quick buckle for connecting the water pipe is arranged at the center of the water distribution pipe, the quick buckle has a high-pressure water source quick connection function, which can shorten the emergency deployment time and ensure the sealing reliability after connection, preventing water pressure leakage from affecting the driving and water spraying effect.

[0012] Further, the movable fire extinguishing pipe is provided with two or more groups, and the number of the movable fire extinguishing pipes is consistent with the number of the first folding arm and the second folding arm, and the adjacent movable fire extinguishing pipes are connected through corrugated hoses; the number matching design realizes synchronous extension of the fire extinguishing pipes when the folding arms are unfolded to expand the coverage range, and the deformable property of the corrugated hose adapts to the mechanical movement, ensuring that the water flow channel is always connected.

[0013] Further, the first blocking block and the second blocking block are both conical, and rubber sealing rings are arranged between the first blocking block, the second blocking block, the first blocking ring and the second blocking ring; the conical structure facilitates quick disengagement of the blocking ring when the ejector rod is pushed, and the rubber sealing ring can enhance the sealing property of the blocking, ensuring that the water pressure is concentrated on the piston when the folding arm is not unfolded.

[0014] Further, a return spring is arranged between the first blocking block and the second blocking block, the return spring can drive the blocking block to return to block the nozzle when the equipment is stored, and provide buffer when it is opened, avoiding rigid collision and damaging the components.

[0015] The technical effects and advantages of the present application are as follows: 1. By adopting a scissors-type folding arm structure combined with an automatic unfolding mechanism driven by water pressure, the volume of the fire-fighting unmanned aerial vehicle in the storage state is greatly reduced, the portability and transportation efficiency of the equipment are improved, and the unmanned aerial vehicle can be quickly deployed to the emergency fire scene. 2. The piston is moved by using a high-pressure water source to automatically drive the folding arm to unfold and simultaneously open the fire extinguishing nozzle, which simplifies the complex operation of manual or additional motor driving to a single water pressure input, greatly shortens the emergency deployment time, and improves the response speed. 3. When the folding arm is not unfolded, the first and second blocking blocks can effectively block the water flow channel to prevent the fire extinguishing medium from being accidentally sprayed out, thereby ensuring the safety and stability of the unmanned aerial vehicle during flight and deployment. When the folding arm is unfolded, the first and second jacks synchronously push away the blocking blocks to ensure smooth water flow to the nozzle, thereby achieving precise fire extinguishing. BRIEF DESCRIPTION OF DRAWINGS

[0016] The disclosure of the present application will be described with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of the present application. In the drawings, the same reference numerals are used to refer to the same parts:

[0017] Figure 1 is a schematic view of the upper appearance structure of the present application; Figure 2 is a schematic view of the bottom appearance structure of the present application; Figure 3 is a schematic view of the take-off support and folding arm structure of the present application; Figure 4 is a schematic view of the quick connection buckle structure of the present application; Figure 5 is a schematic view of the folding arm structure of the present application; Figure 6 is a schematic view of the folding arm connection structure of the present application; Figure 7 is a schematic view of the folding arm planar structure of the present application; Figure 8 is a schematic view of the water distribution pipe structure of the present application; Figure 9 is a schematic view of the Figure 8 is a schematic view of the A-out enlarged structure of the present application; Figure 10 is a schematic view of the water distribution pipe cross-sectional structure of the present application; Figure 11 is a schematic view of the movable fire extinguishing pipe cross-sectional structure of the present application.

[0018] Legend: 1. Quadcopter explosion-proof UAV; 2. Take-off and landing bracket; 3. Folding arm; 301. First folding arm; 302. Second folding arm; 303. Central rotation axis; 304. First positioning pin; 305. Second positioning pin; 306. Third positioning pin; 4. Connecting fixing block; 401. Fixing slot; 5. Guide rod connecting block; 501. Fixing insert; 6. Sliding guide rod; 7. First connecting block; 8. Second connecting block; 9. Fixing support 10. Pipe clamp; 11. Water distribution pipe; 12. Quick-connect clamp; 13. Central telescopic pipe; 14. Piston; 15. Movable fire extinguishing pipe; 16. First telescopic pipe; 1601. First nozzle; 1602. First push rod; 17. Second telescopic pipe; 1701. Second nozzle; 1702. Second push rod; 18. First sealing ring; 19. First sealing block; 20. Second sealing ring; 21. Second sealing block; 22. Return spring. Detailed Implementation

[0019] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following drawings indicate similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] Example 1: As Figures 1-11 As shown, the present invention provides a side-folding arm type portable fire-fighting drone. Its overall structure is designed to achieve efficient fire extinguishing and excellent portability. The core of the drone includes a quadcopter explosion-proof drone 1. The take-off and landing bracket 2 set at the bottom of the drone not only provides support for the drone, but also serves as the core installation platform for the entire fire extinguishing system.

[0021] On both sides of the take-off and landing support 2, a set of folding arms 3 are fixedly connected, which are the key components to realize the size reduction and operation range expansion of the unmanned aerial vehicle. Each set of folding arms 3 is composed of two or more first folding arms 301 and second folding arms 302 connected in turn, which are crossed with each other to form a scissor structure, so that the folding arms 3 can be folded and unfolded like scissors. A central rotating shaft 303 is arranged at the center intersection of the first folding arms 301 and the second folding arms 302, which allows the two folding arms 3 to rotate relative to each other, thereby completing the folding and unfolding of the folding arms 3.

[0022] At the bottom of the take-off and landing support 2, a water diversion pipe 11 is strategically arranged, which is a dry route for the transmission of fire extinguishing medium. Two center extension pipes 13 are inserted into the two ends of the water diversion pipe 11 respectively. The end of each center extension pipe 13 is connected with a piston 14, which is in close sliding sealing cooperation with the inner wall of the water diversion pipe 11. This means that under the action of an external high-pressure water source, the piston 14 can move axially in the water diversion pipe 11 and transmit the driving force of high-pressure water.

[0023] In order to accurately transmit this driving force to the folding arms 3, a first positioning pin 304 is fixedly connected at the center rotating shaft 303, which is further fixedly connected with the center extension pipe 13. Therefore, when the high-pressure water pushes the piston 14 and the center extension pipe 13 to move, the first positioning pin 304 will drive the center rotating shaft 303 to rotate, thereby driving the folding arms 3 to unfold.

[0024] The other end of the center extension pipe 13 is connected with two or more movable fire extinguishing pipes 15 in turn through corrugated hoses. The corrugated hose is designed to be very important, which has good flexibility and scalability, can adapt to deformation during the movement of the folding arms 3, and always keep the water flow channel connected, so as to ensure that the fire extinguishing medium will not be interrupted due to the expansion and contraction of the folding arms 3. The movable fire extinguishing pipe 15 is a direct channel for spraying fire extinguishing medium. The two ends of each movable fire extinguishing pipe 15 are respectively inserted with a first extension pipe 16 and a second extension pipe 17. The ends of the first extension pipe 16 and the second extension pipe 17 are respectively provided with a first spout 1601 and a second spout 1701, which are the outlets for finally spraying fire extinguishing medium.

[0025] In order to realize the linkage and telescoping of the folding arm 3 and the fire extinguishing pipe, the ends of the first folding arm 301 and the second folding arm 302 are fixedly connected with a second positioning pin 305 and a third positioning pin 306, respectively, the second positioning pin 305 is fixedly connected with the first telescopic pipe 16, and the third positioning pin 306 is fixedly connected with the second telescopic pipe 17, through this ingenious connection, when the folding arm 3 is unfolded, the first telescopic pipe 16 and the second telescopic pipe 17 will be synchronously extended, so that the movable fire extinguishing pipe 15 realizes telescoping, to adapt to the length of the expanded folding arm 3, on the contrary, when the folding arm 3 is folded, the fire extinguishing pipe will also be synchronously retracted.

[0026] In order to effectively block the water flow channel and concentrate the water pressure to drive the piston 14 when the folding arm 3 is not unfolded, the application designs a set of blocking mechanism, specifically, on the inside of the first telescopic pipe 16, a first blocking ring 18 is arranged, the first blocking ring 18 is fixedly connected with the movable fire extinguishing pipe 15, inside the first blocking ring 18, a first blocking block 19 is tightly inserted, when the folding arm 3 is in the folded state, the first blocking block 19 can completely block the water flow channel, the end of the first telescopic pipe 16 is fixedly connected with a first ejector rod 1602, when the folding arm 3 is unfolded, the first telescopic pipe 16 is extended, the first ejector rod 1602 will push the first blocking block 19 out of the first blocking ring 18, so as to open the water flow channel.

[0027] Similarly, on the inside of the second telescopic pipe 17, a second blocking ring 20 is arranged, a second blocking block 21 is tightly inserted inside the second blocking ring 20, the end of the second telescopic pipe 17 is fixedly connected with a second ejector rod 1702, the two components cooperate to realize the synchronous opening and closing of the water flow channel, that is, when the folding arm 3 is unfolded, the second ejector rod 1702 pushes the second blocking block 21 to open the water flow channel; when the folding arm 3 is folded, the blocking block resets to block the water flow channel.

[0028] In use, first connect the quick connector buckle 12 to an external high-pressure water source, the high-pressure water enters the water distribution pipe 11, and since the nozzle is in a blocked state at this time, that is, the first blocking block 19 and the second blocking block 21 block the water flow channel, the water pressure will act on the piston 14, under the push of the water pressure, the piston 14 drives the central telescopic pipe 13 to move, drives the central rotating shaft 303 to rotate through the first positioning pin 304, thereby prompting the folding arm 3 to unfold outward, as the folding arm 3 unfolds, the second positioning pin 305 and the third positioning pin 306 respectively drive the first telescopic pipe 16 and the second telescopic pipe 17 to extend outward, the extension of the first telescopic pipe 16 and the second telescopic pipe 17 causes the corresponding top rods at the ends of the first telescopic pipe 16 and the second telescopic pipe 17, that is, the first top rod 1602 and the second top rod 1702, to push the blocking blocks inside them, that is, the first blocking block 19 and the second blocking block 21, the blocking blocks are pushed out of the blocking ring, the water flow channel is opened, and the fire extinguishing medium can be sprayed out of the first nozzle 1601 and the second nozzle 1701 to perform fire extinguishing operations. This automatic unfolding and nozzle opening mechanism based on water pressure greatly simplifies the operation process and improves the emergency response speed.

[0029] Example two: on the basis of example one, in order to further enhance the structural stability of the unfolded folding arm 3 and the load bearing capacity during high-pressure water spraying operation, the structure of the folding arm 3 is optimized in this embodiment.

[0030] As shown in Figure 1 and Figure 5 , the folding arm 3 can be provided with a double-layer structure, specifically, the folding arm 3 connected to the two side lifting supports 2 is provided with two layers, and the two layers of folding arms 3 are arranged in parallel with each other, in order to ensure that the double-layer structure can act cooperatively and transmit driving force, the first positioning pin 304, the second positioning pin 305 and the third positioning pin 306 are sequentially and correspondingly connected between the two layers of folding arms 3, that is, these positioning pins pass through the corresponding positions of the upper and lower two layers of folding arms 3, firmly connecting them together.

[0031] The design of this double-layer structure makes the unfolded folding arm 3 form a more solid and stable geometric support, which can effectively resist the reaction force and flight vibration generated during high-pressure water jetting, enhancing the overall rigidity of the structure, which not only ensures the synchronous accuracy of the movable fire extinguishing pipe 15 during the telescoping process, avoiding possible jamming or deformation, more importantly, significantly improves the load bearing capacity of the unmanned aerial vehicle during high-pressure water spraying fire extinguishing operation, which means that the unmanned aerial vehicle can more stably hover above the target area, with a longer distance and larger flow rate for efficient fire extinguishing, thereby improving the reliability and safety of fire fighting operations.

[0032] In addition, in order to realize the overall weight reduction of the unmanned aerial vehicle and reduce the flight energy consumption, while ensuring the structural strength of the folding arm 3 during folding and unfolding, the material of the folding arm 3 is preferably selected as light aluminum alloy in this embodiment. Light aluminum alloy has excellent strength-to-weight ratio, which can significantly reduce the take-off weight of the unmanned aerial vehicle and prolong the hovering time. At the same time, its good mechanical properties ensure the reliability of the folding arm 3 when repeatedly moving and bearing external load, and both portability and operation reliability are considered. This material selection not only conforms to the lightweight design trend of aircraft, but also meets the high requirements of fire-fighting equipment on strength and durability.

[0033] Embodiment three: on the basis of embodiment two, the movement guide and water flow distribution structure of the folding arm 3 are further refined and optimized in this embodiment to ensure the stability of the folding arm 3 movement trajectory, the reliability of the water pipe connection and the working efficiency of the sealing mechanism.

[0034] As shown in Figure 5 and Figure 6 In order to provide stable and detachable support and guide, the landing support 2 is fixedly connected with a group of connecting fixed blocks 4 on both sides. A fixed slot 401 is formed on each connecting fixed block 4. A guide rod connecting block 5 is further provided on one side of the connecting fixed block 4. A fixed plug 501 is integrally provided on the guide rod connecting block 5. The fixed plug 501 can be accurately inserted into the fixed slot 401 and fixed by bolts. This design forms a detachable connection structure, which greatly facilitates the maintenance, repair and replacement of the folding arm 3 part, reduces the maintenance difficulty and cost, and shortens the downtime.

[0035] The sliding guide rod 6 is fixedly connected through the sliding guide rod 6 on the guide rod connecting block 5. The sliding guide rod 6 is the track of the folding arm 3 movement. The first connecting block 7 and the second connecting block 8 are slidably connected on the sliding guide rod 6. The first connecting block 7 is rotatably connected with the first folding arm 301, and the second connecting block 8 is rotatably connected with the second folding arm 302. Through this connection mode, the sliding guide rod 6 provides accurate guide and limiting for the movement of the folding arm 3. It ensures that the folding arm 3 always moves smoothly along the preset straight trajectory during folding and unfolding, effectively avoids deflection, jamming or structural damage, and thus ensures the stability of its movement.

[0036] In order to further enhance the guide accuracy and effectively prevent the folding arm 3 from deflecting up and down during folding and unfolding, and ensure the synchronization accuracy of the fire-fighting pipe and the folding arm 3, preferably, the sliding guide rod 6 is provided with two, which are parallel to each other and arranged above and below, and together form a bidirectional guide constraint structure. This double-track design provides stronger anti-torsion and anti-deflection capability, making the movement of the folding arm 3 more accurate and reliable, especially in high-speed or high-load operating environment, its stability advantage is more prominent.

[0037] As shown in Figures 8-11 To ensure the stability of the water diversion pipe 11 under the impact of high-pressure water flow or the vibration of the unmanned aerial vehicle flight, a fixed support 9 is fixedly connected to the bottom of the take-off support 2 by bolts, and the bottom of the fixed support 9 is further fixedly connected to a pipeline buckle 10, which is U-shaped or ring-shaped and can tightly and connect the water diversion pipe 11. The fixed structure effectively fixes the water diversion pipe 11 on the take-off support 2, avoiding displacement, loosening or falling of the water diversion pipe 11 due to water flow impact or unmanned aerial vehicle vibration during unmanned aerial vehicle flight, especially high-pressure water jet operation, thereby ensuring the stability of water pressure transmission and reliable operation of the system.

[0038] At the center of the water diversion pipe 11, a quick connection buckle 12 for connecting an external water pipe is provided. The quick connection buckle 12 has a high-pressure water source quick docking function, which allows the operator to quickly and reliably connect an external high-pressure water source such as a fire truck or water pump to the unmanned aerial vehicle's fire extinguishing water line in the shortest time. This quick connection capability greatly shortens the emergency deployment time, which is crucial for fire rescue that requires every second. At the same time, the quick connection buckle 12 can provide excellent sealing reliability after connection, effectively preventing leakage under high-pressure water flow, thereby ensuring the driving water pressure acting on the piston 14 and the final water flow effect, and ensuring the effectiveness of the fire extinguishing operation.

[0039] To optimize the performance of the plugging mechanism, two or more active fire extinguishing pipes 15 are provided, and the number of active fire extinguishing pipes 15 matches the number of first folding arms 301 and second folding arms 302. The adjacent active fire extinguishing pipes 15 are connected by corrugated hoses. This number matching design ensures that the active fire extinguishing pipes 15 can be extended synchronously when the folding arms 3 are unfolded, maximizing the fire extinguishing coverage. The deformable nature of the corrugated hose maintains the water flow channel throughout the mechanical movement, ensuring smooth water flow even when the folding arms 3 are bent or stretched.

[0040] To improve the reliability of the plugging effect and the smoothness of the push rod, preferably, the first plugging block 19 and the second plugging block 21 are both conical. The conical structure allows the push rod to quickly and smoothly disengage from the plugging ring when pushing the plugging block, reducing the possibility of jamming and improving the response speed of opening. In addition, the conical structure provides a tighter fit when fully inserted, enhancing the plugging effect. To further enhance the plugging sealing performance and prevent any water pressure leakage, rubber sealing rings are additionally provided between the first plugging block 19 and the second plugging block 21 and the first plugging ring 18 and the second plugging ring 20. The rubber sealing rings have good elasticity and sealing performance, ensuring that the water pressure can be fully concentrated on the piston 14 when the folding arms 3 are not unfolded, thereby providing sufficient driving force to unfold the folding arms 3.

[0041] In order to automatically drive the blocking block to reset the blocking nozzle when the device is stored, and to provide buffering to avoid rigid collision and damage to the components when it is opened, preferably, a reset spring 22 is arranged between the first blocking block 19 and the second blocking block 21. When the high-pressure water supply is stopped and the folding arm 3 starts to retract, the elastic force of the reset spring 22 will push the blocking block back into the blocking ring, automatically close the nozzle, and ensure that the water flow channel is resealed in the non-working state. During the unfolding process, the reset spring 22 also acts as a buffer, reducing the impact between the top rod and the blocking block, protecting the components from damage, and prolonging the service life.

[0042] The above only describes the embodiments of the present application and is not used to limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lateral folding robotic arm type portable firefighting drone, characterized in that, Include: Quadcopter explosion-proof unmanned aerial vehicle (1), the bottom of the quadcopter explosion-proof unmanned aerial vehicle (1) is fixedly connected with a take-off support (2), a group of folding arms (3) are fixedly connected on both sides of the take-off support (2), the folding arms (3) comprise first folding arms (301) and second folding arms (302), two groups or more than two groups of the first folding arms (301) and the second folding arms (302) are sequentially rotationally connected, the first folding arms (301) and the second folding arms (302) are crossed with each other, and a center rotating shaft (303) is arranged at the center intersection of the first folding arms (301) and the second folding arms (302), and the first folding arms (301) and the second folding arms (302) are rotationally connected through the center rotating shaft (303); a water distribution pipe (11) is arranged at the bottom of the take-off support (2), one end of the water distribution pipe (11) is inserted into a center telescopic pipe (13), a piston (14) is connected to the other end of the center telescopic pipe (13), the piston (14) is in sliding sealing cooperation with the inner wall of the water distribution pipe (11), a first positioning pin (304) is fixedly connected to the center rotating shaft (303), the first positioning pin (304) is fixedly connected with the center telescopic pipe (13), two groups or more than two groups of movable fire extinguishing pipes (15) are sequentially connected to one end of the center telescopic pipe (13) through corrugated hoses, the movable fire extinguishing pipes (15) are respectively inserted into a first telescopic pipe (16) and a second telescopic pipe (17) at two ends, first spouts (1601) and second spouts (1701) are arranged at the ends of the first telescopic pipe (16) and the second telescopic pipe (17), respectively, second positioning pins (305) and third positioning pins (306) are fixedly connected to the ends of the first folding arms (301) and the second folding arms (302), respectively, the second positioning pins (305) are fixedly connected with the first telescopic pipe (16), and the third positioning pins (306) are fixedly connected with the second telescopic pipe (17); a first blocking ring (18) is arranged on the inner side of the first telescopic pipe (16), the first blocking ring (18) is fixedly connected with the movable fire extinguishing pipe (15), a first blocking block (19) is tightly inserted into the first blocking ring (18), and a first jack (1602) is fixedly connected to the end of the first telescopic pipe (16); a second blocking ring (20) is arranged on the inner side of the second telescopic pipe (17), a second blocking block (21) is tightly inserted into the second blocking ring (20), and a second jack (1702) is fixedly connected to the end of the second telescopic pipe (17).

2. The lateral folding robotic arm portable firefighting drone according to claim 1, wherein, The folding arms (3) are provided in two layers, the folding arms (3) in the two layers are parallel to each other, and the folding arms (3) in the two layers are connected through the first positioning pins (304), the second positioning pins (305) and the third positioning pins (306) in sequence.

3. The lateral folding robotic arm portable firefighting drone according to claim 1, wherein, The folding arms (3) are made of light aluminum alloy material.

4. The lateral folding robotic arm portable firefighting drone of claim 1, wherein, The lifting support (2) is fixedly connected with a group of connecting fixed blocks (4) on both sides, the connecting fixed blocks (4) are provided with fixed insertion grooves (401), the connecting fixed blocks (4) are provided with guide rod connecting blocks (5) on one side, the guide rod connecting blocks (5) are integrally provided with fixed insertion blocks (501), the fixed insertion blocks (501) are inserted into the fixed insertion grooves (401) and are fixed by bolts, the guide rod connecting blocks (5) are penetrated and fixedly connected with sliding guide rods (6), the sliding guide rods (6) are slidably connected with first connecting blocks (7) and second connecting blocks (8), the first connecting blocks (7) are rotatably connected with first folding arms (301), and the second connecting blocks (8) are rotatably connected with second folding arms (302).

5. The lateral folding robotic arm portable firefighting drone of claim 4, wherein, The sliding guide rods (6) are provided in two, the two sliding guide rods (6) are parallel to each other and are arranged in an up-down mode, so that the folding arms (3) are prevented from rotating up and down.

6. The lateral folding robotic arm portable firefighting drone of claim 1, wherein, The bottom of the lifting support (2) is fixedly connected with a fixed support (9) through bolts, the bottom of the fixed support (9) is fixedly connected with a pipeline buckle (10), and the pipeline buckle (10) is clamped and connected with a water distribution pipe (11).

7. The lateral folding robotic arm portable firefighting drone of claim 6, wherein, The center of the water distribution pipe (11) is provided with a quick buckle (12) for connecting a water pipe.

8. The lateral folding robotic arm portable firefighting drone of claim 1, wherein, The movable fire extinguishing pipes (15) are provided in two or more groups, the number of the movable fire extinguishing pipes (15) is consistent with that of the first folding arms (301) and the second folding arms (302), and adjacent movable fire extinguishing pipes (15) are communicated through corrugated hoses.

9. The lateral folding robotic arm portable firefighting drone of claim 1, wherein, The first blocking block (19) and the second blocking block (21) are conical, and rubber sealing rings are further arranged between the first blocking block (19) and the second blocking block (21) and the first blocking ring (18) and the second blocking block (21).

10. The lateral folding robotic arm portable firefighting drone of claim 9, wherein, Reset springs (22) are arranged between the first blocking block (19) and the second blocking block (21).

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