A device for folding and unfolding a drone rack assembly

Abstract

The utility model belongs to aircraft technical field, concretely relates to a kind of folding and unfolding device of unmanned aerial vehicle rack assembly, including folding and unfolding box, folding and unfolding box top surface is connected to unmanned aerial vehicle rack assembly body bottom, folding and unfolding box inner wall surface welding mount, mount surface utilizes bolt installation micro motor, micro motor output end surface connects ball screw, ball screw bottom surface sleeve is connected in bearing inner wall, bearing surface is installed in mount lower end, mount surface slidingly connects moving block, moving block surface is connected in ball screw surface by screw thread, moving block surface is connected with connecting block, connecting block other side rotatably connects first rotating shaft.The utility model, by the micro motor of being installed in the start of folding and unfolding box, drive ball screw rotation, to drive moving block height adjustment, to drive support frame rotation folding and unfolding under the cooperation of three rotating shafts, to avoid support frame extension influence unmanned aerial vehicle rack assembly body flight stability in flight.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft technology, specifically relating to a retraction and deployment device for a drone frame assembly. Background Technology

[0002] Unmanned vehicles, abbreviated as "UAVs" or "URMs", are devices operated using radio remote control equipment and onboard program control devices, or operated autonomously by an onboard computer, either completely or intermittently. These include unmanned aerial vehicles, unmanned vehicles, and robot dogs.

[0003] Compared to manned aircraft, drones are often better suited for tasks that are too "dull, dirty, or dangerous." Drones can be categorized into military and civilian applications. In the civilian sector, the combination of drones with industry applications represents the true necessity of drones. Applications in aerial photography, agriculture, plant protection, miniature selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, news reporting, power line inspection, disaster relief, film and television production, and even creating romantic moments have greatly expanded the uses of drones. Developed countries are also actively expanding industry applications and developing drone technology.

[0004] The landing gear of existing drones is generally a fixed structure that extends outward throughout the flight. This structure causes significant wind resistance and vortex interference during flight, which in turn reduces flight speed and lift efficiency, and even affects the stability of flight attitude. Utility Model Content

[0005] The purpose of this utility model is to provide a retraction and extension device for a drone frame assembly, which aims to solve the problem that the landing gear of existing drone aircraft is generally a fixed structure that is in an extended state throughout the flight. This structure will cause significant wind resistance and vortex interference during flight, which will reduce flight speed and lift efficiency, and even affect the stability of flight attitude.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a take-up and take-down device for a drone frame assembly, comprising a take-up and take-down box, the top surface of which is connected to the bottom of the drone frame assembly body, a mounting bracket welded to the inner wall surface of the take-up and take-down box, a micro motor mounted on the surface of the mounting bracket using bolts, a ball screw connected to the output end surface of the micro motor, a ball screw sleeved on the bottom surface of the ball screw, the bearing surface mounted on the lower end of the mounting bracket, a movable block slidably connected to the surface of the mounting bracket, a threaded connection between the surface of the movable block and the surface of the ball screw, a connecting block connected to the surface of the movable block, a first rotating shaft rotatably connected to the other side of the connecting block, the first rotating shaft slidably connected to a limiting groove on the surface of a limiting frame, an adjusting rod rotatably connected to the surface of the first rotating shaft, the adjusting rod rotatably connected to the upper surface of a support frame via a second rotating shaft, a limiting rod adhered to the top surface of the horizontal end of the support frame, and the limiting rod engaging with a limiting circular groove opened on the surface of a buffer pad.

[0007] As a preferred embodiment of the take-up and take-down device for a drone frame assembly of the present invention, a set of rectangular through slots are symmetrically opened on the surface of the take-up and take-down box, and two sets of mounting brackets and limiting brackets are symmetrically distributed on the inner wall of the take-up and take-down box.

[0008] As a preferred embodiment of the unmanned aerial vehicle (UAV) frame assembly retraction device of this utility model, the mounting frame is a U-shaped integrated structure with a rectangular cavity formed on its surface, and the shape and size of the rectangular cavity are adapted to the moving block.

[0009] As a preferred embodiment of the take-up and take-down device for a drone frame assembly of this utility model, the limiting frame has a longitudinally formed elongated through groove on its surface, the shape and size of which are adapted to the first rotating shaft.

[0010] As a preferred embodiment of the unmanned aerial vehicle frame assembly of this utility model, the surface of the buffer pad abuts against the lateral end surface of the support frame, and the top surface of the support frame is rotatably connected to the surface of the rectangular block inside the storage box via a third rotating shaft.

[0011] As a preferred embodiment of the take-up and take-down device for a drone frame assembly of this utility model, the buffer pad has two sets of circular limiting grooves symmetrically opened on its lateral end surface, the shape and size of which are adapted to the limiting rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] The micro motor installed in the take-up box is started, which drives the ball screw to rotate, thereby driving the moving block to adjust the height. Then, with the cooperation of three rotating shafts, the support frame is rotated to take up and down, thus preventing the support frame from extending and affecting the flight stability of the drone frame components during flight.

[0014] In addition, by using the limiting rods bonded to the support frame and the limiting grooves opened on the surface of the buffer pad, the connection of the buffer pad to the bottom of the support frame is quickly fixed, thereby buffering the support frame and the ground and avoiding rigid contact between the two. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a top view of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0019] Figure 4 This is an enlarged cross-sectional structural diagram of the storage box portion of this utility model.

[0020] In the diagram: 1. Retraction box; 2. Drone frame assembly body; 3. Mounting bracket; 4. Micro motor; 5. Ball screw; 6. Bearing; 7. Moving block; 8. Connecting block; 9. First rotating shaft; 10. Limiting frame; 11. Adjusting rod; 12. Second rotating shaft; 13. Support frame; 14. Limiting rod; 15. Buffer pad; 16. Limiting groove; 17. Third rotating shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This utility model provides the following technical solution: a take-up and take-down device for a drone frame assembly, including a take-up and take-down box 1. The top surface of the take-up and take-down box 1 is connected to the bottom of the drone frame assembly body 2. A mounting frame 3 is welded to the inner wall surface of the take-up and take-down box 1. A micro motor 4 is mounted on the surface of the mounting frame 3 using bolts. A ball screw 5 is connected to the output end surface of the micro motor 4. The bottom surface of the ball screw 5 is sleeved on the inner wall of a bearing 6. The bearing 6 is mounted on the lower end of the mounting frame 3. A moving block 7 is slidably connected to the surface of the mounting frame 3. The surface of the moving block 7 is threadedly connected to the surface of the ball screw 5. A connecting block 8 is connected to the surface of the moving block 7. The other side of the connecting block 8 is rotatably connected to a first rotating shaft 9. A rotating shaft 9 is slidably connected to a limiting groove on the surface of a limiting frame 10. An adjusting rod 11 is rotatably connected to the surface of the first rotating shaft 9. The surface of the adjusting rod 11 is rotatably connected to the upper surface of the support frame 13 via a second rotating shaft 12. A limiting rod 14 is bonded to the top surface of the horizontal end of the support frame 13. The surface of the limiting rod 14 is engaged and sleeved in a limiting circular groove 16 opened on the surface of the buffer pad 15. In this design, the drone frame assembly body 2 is the main body of the drone frame, and a large number of related components are set in the main body of the drone frame. Since these are existing technologies and the core content of this technical solution is irrelevant to them, they will not be described in detail in this technical solution.

[0023] The main model of the drone frame in this solution is: DJI Mavic 3E Enterprise Edition.

[0024] In use: The main body of the drone frame generates lift by driving the propellers to rotate through four motors, and the vertical take-off and landing are achieved by synchronously increasing or decreasing the speed of all motors; by utilizing the speed difference between adjacent motors, control torques for roll, pitch, and yaw are generated to complete attitude adjustments such as forward, backward, left, right movement and horizontal rotation; at the same time, it has a built-in IMU inertial measurement unit, GNSS satellite positioning module and omnidirectional vision to collect attitude, position and environmental obstacle information in real time, and the flight control system dynamically adjusts the motor speed through PID algorithm to achieve stable hovering and precise flight; with intelligent functions, it can also automatically plan flight trajectory based on environmental perception, taking into account power control and autonomous operation capabilities.

[0025] Preferably, a set of rectangular through grooves are symmetrically opened on the surface of the receiving box 1, and two sets of mounting brackets 3 and limiting brackets 10 are symmetrically distributed on the inner wall of the receiving box 1.

[0026] In actual use, two micro motors 4, symmetrically distributed in the take-up and take-down box 1, start to rotate forward and reverse at the same time, thereby driving the connected ball screw 5 to rotate in the bearing 6, thereby driving the two sets of support frames 13 to take up and put down.

[0027] Preferably, the mounting bracket 3 is a U-shaped integrated structure with a rectangular cavity formed on its surface, and the shape and size of the rectangular cavity are adapted to the moving block 7.

[0028] In actual use, two sets of micro motors 4, symmetrically distributed in the receiving box 1, start to rotate forward and reverse at the same time, thereby driving the connected ball screw 5 to rotate in the bearing 6. When the ball screw 5 rotates, the moving block 7 connected to its surface threadedly moves up and down in the rectangular groove on the surface of the mounting bracket 3.

[0029] Preferably, the surface of the limiting frame 10 has a longitudinally formed elongated through groove, the shape and size of which are adapted to the first rotating shaft 9.

[0030] In practical use, the elongated through groove on the surface of the limiting frame 10 limits and guides the movement of the first rotating shaft 9.

[0031] Preferably, the surface of the cushioning pad 15 abuts against the lateral end surface of the support frame 13, and the top surface of the support frame 13 is rotatably connected to the surface of the rectangular block inside the storage box 1 via the third pivot 17.

[0032] In actual use, the buffer pad 15 fitted at the bottom of the horizontal end of the support frame 13 abuts against the ground, providing flexible buffering for the contact between the support frame 13 and the ground.

[0033] Preferably, two sets of circular limiting grooves 16 are symmetrically opened on the transverse end surface of the buffer pad 15, and their shape and size are adapted to the limiting rod 14.

[0034] In practical use, the circular limiting grooves 16 opened on both sides of the buffer pad 15 are used to fit onto the surface of the limiting rod 14, thereby fixing the position of the buffer pad 15 on the bottom horizontal end surface of the support frame 13.

[0035] Working Principle: In this design, the micro motor 4 is a DFRobot 2.5g 360° micro servo, which supports PWM signal control for forward and reverse rotation and is equipped with an OpenFrame micro electromagnetic lock. This locks the connected ball screw 5 after the micro motor 4 stops running. During the operation of the UAV frame assembly 2, the operating parameters of the micro motor 4 are remotely set via its intelligent control module. When the UAV frame assembly 2 moves away from the ground and begins its flight attitude, the control module of the UAV frame assembly 2 starts the micro motor 4. The two sets of micro motors 4, symmetrically distributed within the take-up and take-off box 1, simultaneously begin forward and reverse rotation, thereby driving the connected ball screw 5 to rotate within the bearing 6. As the ball screw 5 rotates, the threaded moving block 7 on its surface moves downwards on the surface of the mounting bracket 3, simultaneously driving the connected ball screw 5... The connecting block 8 and the first rotating shaft 9 move downward on the limiting through groove on the surface of the limiting frame 10. At this time, the part of the adjusting rod 11 rotatably connected to the surface of the first rotating shaft 9 and rotatably connected to the support frame 13 via the second rotating shaft 12 rotates together. The third rotating shaft 17 rotatably connected to the rectangular block on the inner wall of the storage box 1 at the top of the support frame 13 is also driven to rotate together. This causes the support frame 13, which is extended and tilted on both sides of the surface of the storage box 1, to rotate and tighten towards the inner wall of the storage box 1 until the support frame 13 abuts against the limit switch installed on the inner wall of the storage box 1. At this time, the limit switch transmits a signal to the intelligent control system built into the drone frame component body 2, thereby transmitting a stop signal to the micro motor 4. At this time, the micro motor 4 transmits a signal to the micro electromagnetic lock to lock the connected ball screw 5, thereby fixing the position of the support frame 13 in the storage box 1.

[0036] Similarly, before the drone frame assembly body 2 is about to terminate its flight mission, the remote control system of the drone frame assembly body 2 transmits control signals to the micro motor 4 again. At this time, the two sets of micro motors 4 installed in the take-up box 1 rotate in opposite directions, thereby driving the moving block 7 connected to the ball screw 5 to move upward on the surface of the limit frame 10. At this time, the first rotating shaft 9, the second rotating shaft 12 and the third rotating shaft 17 connected between the support frame 13 and the adjusting rod 11 are driven to rotate, thereby causing the support frame 13, which is retracted in the take-up box 1, to extend 45° again. At this time, the buffer pad 15 sleeved at the bottom of the horizontal end of the support frame 13 abuts against the ground, providing flexible buffering for the contact between the support frame 13 and the ground.

[0037] In this application, the buffer pad 15 is made of silicone rubber, which has strong elastic recovery and can effectively absorb the vertical impact when the drone lands, reducing the transmission of vibration to the support frame 13. It is resistant to high and low temperatures and aging, making it suitable for complex outdoor environments. The material is soft and has a certain degree of toughness. When the limiting groove 16 is fitted with the limiting rod 14, it can achieve an interference fit through its own elastic contraction, making it difficult to fall off. At the same time, it is waterproof and dustproof, and the fixing effect will not be affected by moisture or sand. The limiting rod 14 is made of 304 stainless steel, which has high rigidity and good corrosion resistance, making it suitable for long-term outdoor use. Its smooth surface will not cause wear to the buffer pad 15 due to friction when it is fitted with the limiting groove 16 on the surface of the buffer pad 15. The diameter can be precisely controlled (error ≤ 0.1mm), forming a tight fit with the limiting groove 16, making the fixing effect more reliable.

[0038] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A take-up and take-down device for a drone frame assembly, comprising a take-up and take-down box (1), characterized in that: The top surface of the take-up and return box (1) is connected to the bottom of the UAV frame assembly body (2). A mounting bracket (3) is welded to the inner wall surface of the take-up and return box (1). A micro motor (4) is mounted on the surface of the mounting bracket (3) using bolts. A ball screw (5) is connected to the output end surface of the micro motor (4). The bottom surface of the ball screw (5) is sleeved on the inner wall of a bearing (6). The surface of the bearing (6) is mounted on the lower end of the mounting bracket (3). A moving block (7) is slidably connected to the surface of the mounting bracket (3). The surface of the moving block (7) is threadedly connected to the surface of the ball screw (5). The moving block (7) is connected to a connecting block (8), and the other side of the connecting block (8) is rotatably connected to a first rotating shaft (9). The first rotating shaft (9) is slidably connected to a limiting through groove on the surface of the limiting frame (10). The first rotating shaft (9) is rotatably connected to an adjusting rod (11). The surface of the adjusting rod (11) is rotatably connected to the upper surface of the support frame (13) via a second rotating shaft (12). A limiting rod (14) is bonded to the top surface of the horizontal end of the support frame (13). The surface of the limiting rod (14) is engaged and sleeved in a limiting circular groove (16) opened on the surface of the buffer pad (15).

2. The unmanned aerial vehicle (UAV) frame assembly retraction and deployment device according to claim 1, characterized in that: The surface of the receiving box (1) is symmetrically provided with a set of rectangular through slots, and the two sets of mounting brackets (3) and limiting brackets (10) are symmetrically distributed on the inner wall of the receiving box (1).

3. The unmanned aerial vehicle (UAV) frame assembly take-up and take-down device according to claim 1, characterized in that: The mounting bracket (3) is a U-shaped integrated structure with a rectangular cavity formed on its surface, and the shape and size of the rectangular cavity are adapted to the moving block (7).

4. The unmanned aerial vehicle (UAV) frame assembly take-up and take-down device according to claim 1, characterized in that: The limiting frame (10) has a longitudinally formed elongated through groove on its surface, and its shape and size are adapted to the first rotating shaft (9).

5. The unmanned aerial vehicle (UAV) frame assembly take-up and take-down device according to claim 1, characterized in that: The surface of the buffer pad (15) abuts against the horizontal end surface of the support frame (13), and the top surface of the support frame (13) is rotatably connected to the surface of the rectangular block inside the storage box (1) by means of the third pivot (17).

6. The unmanned aerial vehicle (UAV) frame assembly take-up and take-down device according to claim 5, characterized in that: The buffer pad (15) has two sets of circular limiting grooves (16) symmetrically opened on the transverse end surface, and their shape and size are adapted to the limiting rod (14).

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