An unmanned aerial vehicle with a cutting function when descending

Abstract

The application discloses a kind of unmanned aerial vehicle with cutting function when descending, including body, body is connected with several support frames, each support frame is respectively installed with lift assembly, each lift assembly below is equipped with cutting assembly, cutting assembly includes cutting plate rotationally installed below corresponding lift assembly, when unmanned aerial vehicle descends, and the object below corresponding lift assembly is cut by rotating cutting plate, lift assembly is also equipped with cleaning assembly, and cleaning assembly is used to clean the sundries on lift assembly.The unmanned aerial vehicle of the application can be applied to multiple fields, and can effectively solve the problem that unmanned aerial vehicle is easily disturbed when descending in work site with high-altitude object such as forest.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicles (UAVs), specifically a UAV with a cutting function during descent. Background Technology

[0002] With the development of drone technology, drones have been widely used in various fields. For example, fire-fighting drones that drop fire extinguishing bombs are a new type of fire rescue equipment used in the fire-fighting field. Fire-fighting drones utilize advanced drone technology, carrying payloads such as fire extinguishing bombs on the bottom of the drone body, to quickly reach the fire scene for precise strikes, effectively curbing the spread of fire.

[0003] Drones often need to descend to a certain altitude when operating. For example, fire-fighting drones need to descend to a certain altitude to drop fire extinguishing bombs to prevent them from being ejected from the intended deployment area due to tree branches. Similarly, camera drones also need to descend to a certain altitude to capture clear footage.

[0004] However, in certain operational scenarios, drones can be interfered with by high-altitude objects during descent, particularly in forest environments. When a drone descends through the canopy, its high-speed rotating propellers are highly susceptible to collisions with horizontal branches. These branches can damage the propellers, causing a sudden drop in lift or even loss of attitude control. Fine branches can be shredded by the high-speed propellers, and the flying wood debris, carrying sparks, can not only clog motor cooling vents, causing overheating and shutdown, but also ignite nearby unburned areas, creating a fire. Even without physical damage, the vibrations caused by high-frequency collisions can interfere with the drone's stability, causing the trajectory of projectiles to deviate from the intended coordinates during deployment. This interference is particularly pronounced for firefighting drones used in forest fire suppression. Summary of the Invention

[0005] This invention provides a drone with a cutting function during descent, in order to solve the problem that existing drones are easily interfered with by high-altitude objects during descent.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A drone with a cutting function during descent includes a body connected to several support frames extending outward from the body. Each support frame is equipped with a lift component that generates an airflow that creates lift. The drone also includes a cutting component located below each lift component. The cutting component includes a cutting plate that is rotatably mounted below the corresponding lift component. During descent, the rotating cutting plate cuts the object below the corresponding lift component.

[0008] Furthermore, the lift assembly includes a fixed motor and blades. The fixed motor is a dual-shaft motor, which is fixed to a corresponding support frame. One output end of the fixed motor faces upward and the other output end faces downward. The blades are installed on the upward output end of the fixed motor, and the fixed motor drives the corresponding blades to rotate to generate airflow that forms lift.

[0009] The cutting assembly also includes a transmission plate, which is fixed below the corresponding lifting assembly. The cutting plate in the cutting assembly is rotatably mounted on the transmission plate via a connecting shaft. The downward output end of the fixed motor in each lifting assembly is connected to the connecting shaft in the corresponding cutting assembly via the transmission plate. The fixed motor drives the corresponding connecting shaft to rotate, thereby driving the corresponding cutting plate to rotate.

[0010] Furthermore, in each cutting assembly, a rotating ring is rotatably mounted on the bottom surface of the transmission plate, and one end of the connecting shaft is coaxially connected to the rotating ring. When the connecting shaft rotates, it drives the rotating ring to rotate. There are multiple cutting plates, one end of each cutting plate is fixedly connected to the circumferential side of the rotating ring, and the other end of each cutting plate extends outward from the circumference of the rotating ring. Thus, when the rotating ring rotates, each cutting plate rotates accordingly.

[0011] Furthermore, each cutting plate has a side cutting plate connected to its outwardly extending end along the rotation circumference. When the cutting plate rotates, it cuts objects that extend longitudinally, while the side cutting plates cut objects that extend laterally as the cutting plate rotates.

[0012] Furthermore, in each cutting assembly, the other end of the connecting shaft extends from the top surface of the transmission plate, and a rotating blade is fixed at the end of the connecting shaft that extends outwards. The rotating blade generates a downward airflow when it rotates with the connecting shaft.

[0013] Furthermore, several electric push rods are fixed to the circumferential side of the rotating ring, and each electric push rod has a cutter fixed to its output end. The electric push rod drives the corresponding cutter to cut the object wrapped around the cutting plate.

[0014] Furthermore, each blade is encased in a protective shell.

[0015] Furthermore, the upper and lower openings of the protective shell are respectively provided with several inclined plates, and the gaps between adjacent inclined plates in the upper opening and the gaps between adjacent inclined plates in the lower opening form flow channels for airflow.

[0016] Furthermore, each protective shell is provided with a cleaning component above its upper shell opening. The cleaning component includes a motor-driven first lead screw slider mechanism. The motor drives the slider in the first lead screw slider mechanism to make a horizontal linear movement above the upper shell opening of the corresponding protective shell, and the slider acts as a cleaning component to clean the debris on the upper shell opening of the corresponding protective shell.

[0017] Furthermore, at least one of the cutting components has a motor-driven second lead screw and slider mechanism on the bottom surface of the transmission plate, and the slider in the second lead screw and slider mechanism is driven by the motor to make longitudinal linear motion on the bottom surface of the transmission plate.

[0018] The circumferential side of the machine body is rotatably connected to the position of the transmission plate with the second lead screw and slider mechanism, and the rotating rod is driven by a motor. The rotating rod can be rotated until the end of the rod is aligned with the slider in the second lead screw and slider mechanism.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] 1. This invention discloses a drone with a cutting function during descent. The drone's ascent and descent are achieved by rotating propellers driven by a fixed motor. When the drone needs to descend into areas with high-altitude objects, such as densely wooded areas, the cutting plate continuously rotates under the drive of the fixed motor, effectively cutting through obstructions encountered during descent, such as branches in a forest, thus ensuring smooth passage. Simultaneously, the protective shell prevents damage to the propellers from external objects during rotation. Furthermore, the scraper in the cleaning assembly automatically slides away debris generated during cutting from the upper opening of the protective shell after the drone takes off, keeping the drone clean and operating efficiently, thus improving both efficiency and safety.

[0021] 2. This invention, by using an electric push rod fixed to the circumferential side of the rotating ring, can powerfully cut objects wrapped around the cutting plate, improving the cutting efficiency of the cutting plate, reducing obstacles to the cutting process, ensuring the smooth progress of the cutting operation, and extending the service life of the equipment.

[0022] 3. When the camera is mounted for on-site monitoring, the camera is rotatable. When the camera lens is dirty, the camera can be rotated until the lens is aligned with the slider in the second lead screw slider mechanism. The movement of the slider uses the cleaning block on the slider surface to clean the camera lens, which can ensure that the drone has a clear monitoring field of view and provide accurate data support for the drone descent operation.

[0023] 4. The drone of this invention can be applied to multiple fields, such as firefighting and photography, and can effectively solve the problem that the drone descent is easily interfered with in work environments with high-altitude objects, such as forests. Attached Figure Description

[0024] Figure 1 This is a perspective view of an embodiment of the present invention.

[0025] Figure 2 This is a bottom view of the main body of an embodiment of the present invention.

[0026] Figure 3This is a partial structural diagram of the body of the embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the transmission plate in an embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the cleaning component according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the wiping assembly according to an embodiment of the present invention.

[0030] In the diagram: 1. Body; 11. Support frame; 12. Propeller; 13. Fixing frame; 14. Storage box; 15. Projection port; 2. Fixing plate; 21. Protective shell; 22. Inclined plate; 23. Fixed motor; 24. Transmission plate; 25. Rotating ring; 26. Cutting plate; 27. Side cutting plate; 28. Electric push rod; 29. ​​Cutter; 210. Connecting shaft; 211. Rotating blade; 3. Positioning plate; 31. Dual-axis motor; 32. First reciprocating lead screw; 33. Scraper; 34. Limiting plate; 35. Limiting guide rail; 36. Limiting block; 4. Connecting plate; 41. Rotating rod; 42. Fixing frame; 43. Second reciprocating lead screw; 44. Base plate; 45. Auxiliary plate; 46. Cleaning block; 47. Limiting groove. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the embodiments will be described in detail below with reference to the accompanying drawings and examples. This will allow for a full understanding of how the present invention uses technical means to solve technical problems and achieve corresponding technical effects, and to facilitate its implementation. The embodiments of the present invention and the various features within them can be combined with each other without conflict, and all resulting technical solutions are within the protection scope of the present invention.

[0032] Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion.

[0034] like Figures 1 to 6As shown, this embodiment discloses a drone with a cutting function during descent, including a body 1, a fixed frame 13 fixed to the bottom of the body 1, and a plurality of support frames 11 extending outward from the circumference of the body 1 connected to the circumferential side of the body 1. Each support frame 11 has a lifting component installed on the top surface of its end, and the lifting component generates an airflow that forms lift.

[0035] Specifically, in this embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, each lift assembly includes a fixed motor 23 and a blade 12. The fixed motor 23 is a dual-axis motor with its axis running longitudinally (i.e., vertically). The fixed motor 23 is fixed to the top surface of the end of the corresponding support frame 11. One output end of the fixed motor 23 faces upward, and the other output end faces downward. The blade 12 is coaxially fixed to the upward output end of the fixed motor 23 through its own center position. When the fixed motor 23 is working, it drives the corresponding blade 12 to rotate to generate an airflow that forms lift.

[0036] In this embodiment, each blade 12 in the lifting assembly is also surrounded by a protective shell 21 with a longitudinal axis. The protective shell 21 has a circular sleeve structure. Several fixing plates 2 are fixedly connected to the top surface of the body 1. The ends of each fixing plate 2 are connected to the circumferential side of each protective shell 21, so that the protective shell 21 can protect the blade 12.

[0037] In this embodiment, a cutting component is also provided below each lifting component. The cutting component has a rotatable ceramic cutting plate 26, which cuts the object below the corresponding lifting component when the drone descends.

[0038] Specifically, each cutting assembly includes a transmission plate 24, a connecting shaft 210, and a cutting plate 26. One end of the transmission plate 24 is fixed to the bottom surface of the support frame 11 where the corresponding lifting assembly is located. The connecting shaft 210 is axially rotatably mounted on the other end of the transmission plate 24, and the lower end of the connecting shaft 210 protrudes from the bottom surface of the other end of the transmission plate 24. The cutting plate 26 is fixed to the lower end of the connecting shaft 210, thereby allowing the cutting plate 26 to be rotatably mounted below the transmission plate 24 via the connecting shaft 210. In each lifting assembly, the downward-facing output end of the fixed motor 23 passes downward through the support frame 11 and is then connected to the connecting shaft 210 via the transmission mechanism in the corresponding transmission plate 24. The downward-facing output end of the fixed motor 23 is connected to the input part of the transmission mechanism, and the connecting shaft 210 is connected to the output part of the transmission mechanism.

[0039] In this embodiment, the transmission mechanism in the transmission plate 24 includes, but is not limited to, a belt drive mechanism and a gear drive mechanism. Taking the belt drive mechanism as an example, the downward output end of the fixed motor 23 is coaxially and fixedly connected to the driving pulley (i.e., the input part) in the belt drive mechanism. The shaft of the connecting shaft 210 is coaxially and fixedly installed in the central through hole of the driven pulley (i.e., the output part) in the belt drive mechanism. Thus, the downward output end of the fixed motor 23 is connected to the connecting shaft 210 through the belt drive mechanism. When the fixed motor 23 is working, it drives the connecting shaft 210 to rotate, thereby realizing the rotation of the cutting plate 26 below the transmission plate 24. The cutting track of the cutting plate 26 is larger than the rotation trajectory of the blade 12, and the distance between the cutting plate 26 and the body 1 is larger than the distance between the blade 12 and the body 1. Therefore, it can cut branches and protect the blade 12.

[0040] The fixed motor 23 drives the transmission plate 24, which in turn drives the connecting shaft 210 and the rotating ring 25 fixed thereon to rotate. The cutting plate 26 rotates with the rotating ring 25, forming a cutting action on the surrounding objects. Since the cutting track of the cutting plate 26 is larger than the rotation trajectory of the blade 12, it ensures that when objects such as branches approach, the cutting plate 26 can cut them first, avoiding direct contact between the branches and the blade 12 and protecting the blade 12 from damage. Through the pre-cutting by the cutting plate 26, the impact of obstacles on the blade 12 is effectively prevented, extending the service life of the blade 12; at the same time, the ceramic material also ensures the wear resistance and stability of the cutting plate 26 during long-term use.

[0041] As an improvement to this embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, a rotating ring 25 is rotatably mounted on the bottom surface of the other end of the transmission plate 24 in each cutting assembly. The lower end of the connecting shaft 210 is coaxially fixed inside the rotating ring 25. When the connecting shaft 210 rotates, it drives the rotating ring 25 to rotate. There are multiple cutting plates 26. One end of each cutting plate 26 is fixedly connected to the circumferential side of the rotating ring 25, and the other end of each cutting plate 26 extends outward from the circumference of the rotating ring 25 in the transverse direction (i.e., horizontal direction). Thus, when the rotating ring 25 rotates, each cutting plate 26 rotates below the transmission plate 24.

[0042] As an improvement to this embodiment, such as Figure 2 , Figure 3 , Figure 4As shown, each cutting plate 26 has a longitudinally extending arc-shaped side-cutting plate 27 connected to its outwardly extending end towards the rotating ring 25, with the surface of the side-cutting plate 27 perpendicular to the surface of the cutting plate 26. When the laterally extending cutting plate 26 rotates, it cuts longitudinally extending objects; when the longitudinally extending side-cutting plate 27 rotates with the cutting plate 26, it cuts laterally extending objects. By having the side-cutting plate 27 at one end of each cutting plate 26 work in conjunction with the cutting plate 26, branches in different directions can be cut. The side-cutting plate 27 is specifically used for laterally cutting laterally extending objects, while the cutting plate 26 is responsible for cutting longitudinally extending objects, improving the comprehensiveness and efficiency of the cutting, ensuring effective cutting regardless of orientation, avoiding omissions, and providing better space for the take-off and landing of the drone.

[0043] As an improvement to this embodiment, such as Figure 3 , Figure 4 As shown, in each cutting assembly, the upper end of the connecting shaft 210 extends from the top surface of the transmission plate 24, and a rotating blade 211 is coaxially fixed to the protruding end of the connecting shaft 210. When the rotating blade 211 rotates with the connecting shaft 210, it generates a downward airflow. By utilizing the directional airflow force generated by the rotating blade 211, the fragments generated during the crushing process are blown downward, effectively preventing the fragments from splashing during crushing and avoiding them from entering the protective shell 21, ensuring the safe operation of the equipment, and also simplifying the subsequent cleaning work.

[0044] As an improvement to this embodiment, such as Figure 2 , Figure 3 , Figure 4 As shown, in each cutting assembly, several electric push rods 28 are fixed to the circumferential side of the rotating ring 25 corresponding to the position below each cutting plate 26. The axial direction of each electric push rod 28 is parallel to the corresponding cutting plate 26, and a ceramic cutter 29 is fixed to the output end of each electric push rod 28. The electric push rod 28 drives the corresponding cutter 29 to cut the object wrapped around the cutting plate 26, thereby improving the cutting efficiency of the cutting plate 26. By driving the cutter 29 to rotate with the rotating ring 25 through the electric push rods 28 fixed to the rotating ring 25, the cutter 29 can be powerfully cut off the object wrapped around the cutting plate 26, improving the cutting efficiency of the cutting plate 26, reducing obstacles to the cutting process, and ensuring the smooth progress of the cutting operation. At the same time, the ceramic cutter 29 is wear-resistant and durable, extending the service life of the equipment.

[0045] As an improvement to this embodiment, such as Figure 1 , Figure 2 , Figure 4As shown, the upper and lower openings of the protective shell 21 are respectively provided with several inclined plates 22. The gaps between adjacent inclined plates 22 in the upper opening and the gaps between adjacent inclined plates 22 in the lower opening form flow channels for airflow. The protective shell 21 is securely connected to the body 1 by the fixing plate 2. Several inclined plates 22 are fixedly connected to the upper and lower openings of the protective shell 21. The gaps between these inclined plates 22 provide a smooth channel for the airflow generated after the blade 12 starts, which not only ensures the normal rotation of the blade 12, but also effectively prevents direct impact of external objects on the blade 12, thus playing a good protective role and reducing the failure rate caused by external interference.

[0046] As an improvement to this embodiment, such as Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, each protective shell 21 is also provided with a cleaning component above the upper shell opening. The cleaning component includes a first lead screw and slider mechanism driven by a motor. The first lead screw and slider mechanism includes a dual-axis motor 31, two first reciprocating lead screws 32, two scrapers 33, and a limiting plate 34.

[0047] Each fixing plate 2 used to connect the protective shell 21 is fixedly connected to a positioning plate 3. The positioning plate 3 extends laterally to the upper opening of the corresponding protective shell 21. The dual-axis motor 31 is axially transverse and is fixed to the end of the positioning plate 3 above the upper opening of the protective shell 21. One end of each of the two first reciprocating lead screws 32 is coaxially fixedly connected to the two output ends of the dual-axis motor 31. A limiting plate 34 is fixed to the top surface of the positioning plate 3 and is transversely parallel to the two first reciprocating lead screws 32. The bottom surface of the limiting plate 34 is formed as a limiting guide rail 35. Two scrapers 33 are installed on the two first reciprocating lead screws 32 through threaded holes. The top surface of each scraper 33 has a guide block corresponding to the position of the limiting guide rail 35. The guide blocks are installed on the limiting guide rail 35 on the bottom surface of the limiting plate 34. The top surface of each scraper 33 also has a limiting block 36. When the dual-axis motor 31 is working, it drives the two first reciprocating lead screws 32 to rotate, thereby causing the two scrapers 33 to perform transverse reciprocating linear motion along the limiting guide rails 35. The first reciprocating lead screws 32 serve as the lead screws in the first lead screw-slider mechanism, the limiting guide rails 35 on the bottom surface of the limiting plate 34 serve as the guide rails in the first lead screw-slider mechanism, and the scrapers 33 serve as the sliders in the first lead screw-slider mechanism. The scrapers 33 also serve as cleaning components to remove debris from the upper opening of the corresponding protective shell 21.

[0048] A dual-axis motor 31 is installed on a positioning plate 3 fixed to each fixed plate 2. Each output end of the dual-axis motor 31 is fixed with a first reciprocating lead screw 32. A scraper 33 is threaded onto each first reciprocating lead screw 32 and can slide stably along the limiting guide rail 35 on the bottom surface of the limiting plate 34. When the dual-axis motor 31 starts, the two first reciprocating lead screws 32 rotate synchronously, driving the scraper 33 to perform a transverse reciprocating linear motion under the guidance of the limiting guide rail 35. The transverse reciprocating motion of the scraper 33 can clean up the broken material scattered on the upper opening of the protective shell 21, improving cleaning efficiency and effectiveness.

[0049] As an improvement to this embodiment, such as Figure 2 , Figure 3 , Figure 6 As shown, at least one of the cutting components has a motor-driven second lead screw and slider mechanism on the bottom surface of the transmission plate 24. The slider in the second lead screw and slider mechanism is driven by the motor to make longitudinal linear motion on the bottom surface of the transmission plate 24. Specifically, the second lead screw and slider mechanism includes a second reciprocating lead screw 43, a base plate 44, an auxiliary plate 45, and a cleaning block 46. The auxiliary plate 45 is longitudinal, and its upper end is fixedly connected to the bottom surface of the corresponding transmission plate 24; the base plate 44 is transverse, and its top surface is fixed to the lower end of the auxiliary plate 45; the second reciprocating screw 43 is longitudinal, and its upper end is rotatably installed in the corresponding transmission plate 24. The transmission plate 24 contains a motor that is coaxially fixedly connected to the upper end of the second reciprocating screw 43, and the lower end of the second reciprocating screw 43 is rotatably connected to the base plate 44; the cleaning block 46 is made of soft cloth, and is installed on the second reciprocating screw 43 through a threaded hole. The cleaning block 46 has a limiting groove 47, which is stuck on the auxiliary plate 45. The second reciprocating lead screw 43 serves as the lead screw in the second lead screw and slider mechanism, the auxiliary plate 45 serves as the guide rail in the second lead screw and slider mechanism, and the cleaning block 46 serves as the slider in the second lead screw mechanism. When the motor in the transmission plate 24 drives the second reciprocating lead screw 43 to rotate, the cleaning block 46 can move longitudinally in a straight line along the longitudinal auxiliary plate 45.

[0050] A downwardly extending connecting plate 4 is fixedly connected to the side of the machine body 1 at the position of the transmission plate 24 with the second lead screw and slider mechanism. The end of the connecting plate 4 is lower than the bottom surface of the transmission plate 24 in the corresponding cutting assembly. The end of the connecting plate 4 is rotatably connected to a rotating rod 41 through a rotating joint. The rotating joint is equipped with a motor. The rotating joint is driven by the motor to rotate, thereby causing the rotating rod 41 to rotate. The rotating rod 41 can be rotated until its end is aligned with the cleaning block 46 in the second lead screw and slider mechanism.

[0051] A fixed frame 42 is fixedly connected to the end of the rotating rod 41. The fixed frame 42 is used to install equipment such as cameras and optical acquisition devices. Taking a camera as an example, when the drone flies among trees, dust and other impurities will adhere to the surface of the camera. At this time, the rotating rod 41 is driven to rotate, so that the camera lens in the fixed frame 42 is aligned with the cleaning block 46. Then, by rotating the second reciprocating screw 43, the cleaning block 46 made of soft cloth material makes longitudinal reciprocating linear motion, thereby wiping and cleaning the camera lens. The cleaning block 46 made of soft cloth material can effectively absorb dust and stains, and protect the camera surface from damage. At the same time, the longitudinal reciprocating motion of the cleaning block 46 can more comprehensively contact and clean the camera, improving wiping efficiency and effect, and ensuring the clarity and service life of the camera.

[0052] This embodiment of the drone can be used in multiple fields, such as firefighting and image acquisition. Taking firefighting as an example, this embodiment of the drone has a storage box 14 for storing fire extinguishing bombs fixedly installed at the bottom of the body 1, thus serving as a firefighting drone. The bottom of the storage box 14 has an opening and closing projection port 15. When the drone descends, the projection port is opened to project the fire extinguishing bombs from the storage box.

[0053] Existing firefighting drones need to reduce their flight altitude to improve projection accuracy when dropping fire extinguishing bombs. However, when the drone descends through the canopy, its high-speed rotating blades are prone to colliding with horizontal branches. The branches may damage the blades, causing a sudden drop in lift or even loss of attitude control. Fine branches may be shredded by the high-speed blades, and the flying wood debris carrying sparks may not only block the motor cooling vents, causing overheating and shutdown, but may also ignite surrounding unburned areas, creating secondary fires. Even if no physical damage occurs, the vibration of the fuselage caused by high-frequency collisions can interfere with the drone's stability, causing the fire extinguishing bomb's trajectory to deviate from the intended coordinates, resulting in problems with timely and effective fire control.

[0054] The firefighting drone of this embodiment can solve the above problems. The drone's ascent and descent are achieved by rotating the propeller 12 driven by the fixed motor 23. During flight, the camera monitors the scene in real time, providing data support for the accurate deployment of fire extinguishing bombs. When the drone needs to traverse densely wooded areas and descend to deploy fire extinguishing bombs, the cutting plate 26, driven by the fixed motor 23, also rotates continuously, effectively cutting obstructing branches and ensuring the drone's smooth passage. Simultaneously, the protective shell 21 prevents the propeller 12 from being damaged by external objects during rotation. Furthermore, the scraper 33 in the cleaning assembly automatically slides and cleans the surface of the protective assembly after the drone takes off, removing broken branches caused by cutting, keeping the drone clean and operating efficiently, thus improving the efficiency and safety of firefighting operations.

[0055] Specifically, the working process of the firefighting drone using this embodiment is as follows:

[0056] The drone ascends and descends by rotating the propeller 12 driven by the fixed motor 23. During flight, the camera monitors the scene in real time, providing data support for the accurate deployment of fire extinguishing bombs. When the drone needs to pass through densely wooded areas and descend to deploy fire extinguishing bombs, the fixed motor 23 drives the transmission plate 24, which in turn drives the connecting shaft 210 and the rotating ring 25 to rotate. The cutting plate 26 mounted on the rotating ring 25 rotates accordingly, creating a cutting action on surrounding objects. Since the cutting track of the cutting plate 26 is larger than the rotation trajectory of the propeller 12, it ensures that when branches or other objects approach, the cutting plate 26 can cut them first, avoiding direct contact between branches and propeller 12 and protecting the propeller 12 from damage. The pre-cutting by the cutting plate 26 effectively prevents obstacles such as branches from impacting the propeller 12, extending the service life of the propeller 12. At the same time, the choice of ceramic material also ensures the wear resistance and stability of the cutting plate 26 during long-term use.

[0057] In addition, the rotating blade 211 is rotated by driving the connecting shaft 210, thereby generating a downward airflow. The rotating blade 211 forms a directional airflow force, which blows the branch fragments generated during the crushing process downward, effectively preventing the branch fragments from splashing during crushing and avoiding them from entering the protective components, ensuring the safe operation of the equipment, and also simplifying the subsequent cleaning work.

[0058] Meanwhile, the protective shell 21 prevents the blade 12 from being damaged by external objects during rotation. The protective shell 21 is securely installed on the upper surface of the body 1 by the fixing plate 2. Several inclined plates 22 are fixed to the upper and lower shell openings of the protective shell 21. The gap between these inclined plates 22 provides a smooth channel for the airflow generated after the blade 12 starts, which not only ensures the normal rotation of the blade 12, but also effectively prevents the direct impact of external objects on the blade 12, playing a good protective role and reducing the failure rate caused by external interference.

[0059] Furthermore, the scraper 33 in the cleaning assembly can perform cleaning after the drone takes off. A dual-axis motor 31 is installed on a positioning plate 3 fixed to each fixed plate 2. Each output end of the dual-axis motor 31 is fixed with a first reciprocating screw 32. Scrapers 33 are slidably connected to the circumferential surfaces of these screws. The scraper 33 can slide stably along the limiting guide rail 35 on the lower surface of the limiting plate 34 fixed to the positioning plate 3. When the dual-axis motor 31 starts, the two first reciprocating screws 32 rotate synchronously, driving the scraper 33 to perform lateral reciprocating motion under the guidance of the limiting guide rail 35. The reciprocating motion of the scraper 33 can remove broken branches scattered on the surface of the protective assembly, improving cleaning efficiency and effectiveness.

[0060] As the drone flies through the forest, dust and other impurities may adhere to the surface of the camera. At this time, the drive rod 41 is rotated to align the camera in the fixed frame 42 with the cleaning block 46. Then, by rotating the second reciprocating screw 43 set on the bottom surface of the transmission plate 24, the cleaning block 4 moves back and forth stably along the auxiliary plate 45, thereby wiping and cleaning the camera. The cleaning block 46, made of soft cloth, can effectively absorb dust and stains and protect the camera surface from damage. At the same time, the reciprocating sliding cleaning block 46 can more comprehensively contact and clean the camera, improving wiping efficiency and effect, and ensuring the clarity and service life of the camera.

[0061] As can be seen, the fire-fighting drone of this embodiment solves the problem that the high-frequency collision between branches and the drone causes the fuselage vibration to interfere with the stability of the drone, and also solves the problem that the trajectory of the fire extinguishing bomb may deviate from the predetermined coordinates, resulting in the inability to control the fire in a timely and effective manner.

[0062] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. These embodiments are merely descriptions of preferred embodiments and are not intended to limit the scope or concept of the invention. The specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. Such combinations, as long as they do not violate the spirit of the present invention, should also be considered as part of this disclosure. To avoid unnecessary repetition, the present invention will not further describe the various possible combinations.

[0063] This invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this invention and without departing from the design idea of ​​this invention, all modifications and improvements made by those skilled in the art to the technical solutions of this invention should fall within the protection scope of this invention. The technical content for which protection is sought in this invention has been fully described in the claims.

Claims

1. A drone with a descending cutting function, comprising a body (1), the body (1) being connected with a plurality of support frames (11) extending outwardly from the body (1), each support frame (11) being respectively provided with a lift assembly, and an airflow for forming a lifting force being generated by the lift assembly, characterized in that, Also include cutting assembly arranged below each lift assembly, the cutting assembly includes cutting plate (26), the cutting plate (26) is rotatably mounted below the corresponding lift assembly, when the unmanned aerial vehicle is lowered, the object below the corresponding lift assembly is cut by the rotating cutting plate (26); The lift assembly includes a fixed motor (23), a paddle (12), the fixed motor (23) is a double shaft motor, the fixed motor (23) is fixed on the corresponding support frame (11), one output end of the fixed motor (23) is upward, the other output end is downward;The paddle (12) is installed on the upward output end of the fixed motor (23), and the corresponding paddle (12) is driven to rotate by the fixed motor (23) to generate the airflow forming the lift; The cutting assembly further includes a transmission plate (24), the transmission plate (24) is fixed below the corresponding lift assembly, the cutting plate (26) in the cutting assembly is rotatably mounted on the transmission plate (24) through the connecting shaft (210), the downward output end of the fixed motor (23) in each lift assembly is connected to the connecting shaft (210) in the corresponding cutting assembly through the transmission plate (24), the corresponding connecting shaft (210) is driven to rotate by the fixed motor (23), and the corresponding cutting plate (26) is further driven to rotate; In each cutting assembly, the transmission plate (24) is rotatably mounted with a rotating ring (25) on the bottom surface, one end of the connecting shaft (210) is coaxially connected with the rotating ring (25), and the rotating ring (25) is driven to rotate when the connecting shaft (210) rotates;The cutting plate (26) has a plurality of cutting plates (26), and one end of each cutting plate (26) is fixedly connected to the circumferential side surface of the rotating ring (25), and the other end of each cutting plate (26) respectively extends outwardly to the circumferential side surface of the rotating ring (25), so that each cutting plate (26) rotates when the rotating ring (25) rotates; The circumferential side surface of the rotating ring (25) is further fixed with a plurality of electric push rods (28), and the output end of each electric push rod (28) is fixed with a cutter (29), and the corresponding cutter (29) is driven to act by the electric push rod (28) to cut off the object wound on the cutting plate (26); The bottom surface of the transmission plate (24) in at least one cutting assembly is provided with a second screw rod and sliding block mechanism driven by a motor, and the sliding block in the second screw rod and sliding block mechanism is driven by the motor to move linearly on the bottom surface of the transmission plate (24); The circumferential side surface of the body (1) is rotatably connected with a rotating rod (41) driven by a motor at a position corresponding to the transmission plate (24) provided with the second screw rod and sliding block mechanism, and the rotating rod (41) can be rotatable to the position corresponding to the sliding block in the second screw rod and sliding block mechanism.

2. The unmanned aerial vehicle with a cutting function during descent according to claim 1, characterized in that, Each cutting plate (26) outwardly extending to the circumferential side surface of the rotating ring (25) is connected with a side cutting plate (27), and the cutting plate (26) rotates to cut the longitudinally extending object, and the side cutting plate (27) rotates with the cutting plate (26) to cut the transversely extending object.

3. The unmanned aerial vehicle with a cutting function during descent according to claim 1, characterized in that, In each cutting assembly, the other end of the connecting shaft (210) passes out from the top surface of the transmission plate (24), and a rotating blade (211) is fixed to the passing-out end of the connecting shaft (210), which generates downward airflow when the connecting shaft (210) rotates.

4. The unmanned aerial vehicle with a cutting function during descent according to any one of claims 1-3, characterized in that, Each paddle (12) is respectively surrounded by a protective shell (21).

5. The unmanned aerial vehicle with a cut-down function according to claim 4, characterized in that, The upper shell opening and the lower shell opening of the protective shell (21) are respectively provided with a plurality of inclined inclined plates (22), and the gaps between adjacent inclined plates (22) in the upper shell opening and the lower shell opening form flow channels for airflow.

6. The unmanned aerial vehicle with a cut-down function according to claim 5, characterized in that, Each protective shell (21) is further provided with a cleaning assembly above the upper shell opening, and the cleaning assembly comprises a first screw rod sliding block mechanism driven by a motor, and the sliding block in the first screw rod sliding block mechanism is driven by the motor to move horizontally and linearly above the upper shell opening of the corresponding protective shell (21), and the sliding block is used as a cleaning piece to clean the sundries on the upper shell opening of the corresponding protective shell (21).

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