Aerial photography damping device for unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle aerial photography damping device which comprises an unmanned aerial vehicle body, a camera is rotatably connected below the unmanned aerial vehicle body, propellers are rotatably connected to four corners of the unmanned aerial vehicle body, a cylinder barrel is fixedly connected below the propellers, a piston is slidably connected into the cylinder barrel, and a piston rod is fixedly connected to the center of the lower end of the piston. A damping mechanism is arranged below the piston rod and comprises a spring, the upper end of the spring is fixedly connected with the bottom of the cylinder barrel, the lower end of the spring is fixedly connected with a lifting ring, and the piston rod is sleeved with the lifting ring in a sliding mode. Meanwhile, the lifting ring greatly compresses the spring upwards, most external force borne by the unmanned aerial vehicle is removed, the phenomenon that the spring cannot be greatly contracted due to the fact that the spring is fixedly connected with one end of the piston rod is avoided, and therefore the damping effect of the unmanned aerial vehicle aerial photography damping device is improved, and stable landing of the unmanned aerial vehicle is guaranteed.

Description

A shock absorption device for drone aerial photography Technical Field

[0001] This utility model belongs to the field of drone aerial photography technology, and in particular relates to a drone aerial photography shock absorption device. Background Technology

[0002] Drone aerial photography technology refers to the technology of using unmanned aerial vehicles, i.e., drones, for aerial photography and video recording. With the advancement of technology, drone aerial photography has become an indispensable part of many fields, such as film and television production, news reporting, geographic surveying, agricultural monitoring, environmental monitoring, and disaster assessment. Because drones are subject to ground effects and turbulence caused by improper user operation during landing, which can damage the drone and camera equipment, vibration reduction in drone aerial photography has become crucial.

[0003] However, existing technologies have some problems: Current drone aerial photography shock absorption devices use hydraulic shock absorption to dampen the drone's vibration. This includes a shock absorber in the structure. When the impact force reaches the shock absorber, the helical spring between the piston rod and cylinder contracts to dissipate most of the impact force. The remaining impact force pushes the small piston to move to the upper oil chamber. The oil in the upper oil chamber is forced through a narrow oil passage into the lower oil chamber. At this point, the friction between the oil passage and the oil, as well as the internal friction between oil molecules, creates a damping force on the impact force, minimizing it and allowing the drone to land safely. However, in the aforementioned shock absorption device, the helical spring... One end of the spring is fixedly connected to the piston rod push end, so the deformation of the helical spring depends on the amount of upward movement of the piston. However, since the principle of the hydraulic shock absorber is to use a narrow oil passage to form a damping force to counteract the external force, the piston cannot move upward quickly and over a long distance. This results in the helical spring not being able to compress significantly and cannot dissipate most of the impact force received by the drone during landing. The main shock absorption is still achieved by the hydraulic shock absorber, and the helical spring does not play a substantial shock absorption role. The overall shock absorption effect on the drone is not ideal. Therefore, we propose a drone aerial photography shock absorption device. Summary of the Invention

[0004] To address the problems existing in the prior art, the purpose of this utility model is to provide a drone aerial photography shock absorption device. After the support block contacts the ground, the support rod rotates outward under the action of the drone's gravity. At the same time, the lifting ring compresses the spring significantly upward, removing most of the external force on the drone. After the support component on the piston rod contacts the ground, the remaining external force is converted into heat energy and dissipated through the hydraulic shock absorption device. This process offsets the external force experienced by the drone during landing as much as possible, thereby improving the shock absorption effect of the drone aerial photography shock absorption device and ensuring a smooth landing of the drone.

[0005] This utility model is implemented as follows: a drone aerial photography shock absorption device includes a drone body, a camera rotatably connected to the lower part of the drone body, propellers rotatably connected to the four corners of the drone body, a cylinder fixedly connected to the lower part of the propeller, a piston slidably connected inside the cylinder, a piston rod fixedly connected to the center of the lower end of the piston, and a shock absorption mechanism provided below the piston rod.

[0006] The shock absorption mechanism includes a spring, the upper end of which is fixedly connected to the bottom of the cylinder, and the lower end of which is fixedly connected to a lifting ring. The lifting ring is slidably sleeved on the piston rod. A support rod is symmetrically rotatably connected below the lifting ring. A connecting rod is rotatably connected between the support rod and the piston rod. A support member is fixedly connected to the bottom end of the piston rod.

[0007] Optionally, the outer circumference of the piston is tightly fitted to the inner wall of the cylinder, and oil passage holes are symmetrically provided on the piston.

[0008] Optionally, a base plate is fixedly connected to the lower end of the cylinder, the piston rod passes through the base plate, and the piston rod and the base plate are tightly fitted together.

[0009] Optionally, a rotating mechanism is fixedly connected to the piston rod, and the connecting rod and the piston rod are rotatably connected through the rotating mechanism.

[0010] Optionally, the rotating mechanism is U-shaped, and a rotating rod is rotatably connected inside the rotating mechanism. One end of the rotating rod is fixedly connected to the connecting rod, and bevel gears are fixedly sleeved at both ends of the rotating rod, with adjacent bevel gears meshing with each other.

[0011] Optionally, the end of the connecting rod away from the piston rod is rotatably connected to the support rod, and an elastic support block is fixedly connected to the lower end of the support rod. A roller is rotatably connected to the side of the elastic support block away from each other, and a heightening plate is provided on one side of the roller. The heightening plate is fixedly connected to the bottom of the elastic support block.

[0012] Optionally, the support member has symmetrically formed storage slots, and the support rod is engaged with the storage slots.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. After the support block contacts the ground, the support rod rotates outward under the action of the drone's gravity. At the same time, the lifting ring compresses the spring significantly upward, removing most of the external force on the drone. This avoids the phenomenon that the spring cannot contract significantly due to the fixed connection between the spring and one end of the piston rod, thereby improving the shock absorption effect of the drone aerial photography shock absorption device and ensuring the drone lands smoothly.

[0015] 2. The bevel gears mesh with each other, ensuring that the support rods can open simultaneously and push the lifting rings upward in sync. This prevents the support rods from failing to open properly due to uneven ground, which could lead to an unstable landing and the drone tipping over.

[0016] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 is a structural schematic diagram of the present invention;

[0018] Figure 2 is a schematic diagram of the propeller provided by this utility model;

[0019] Figure 3 is a schematic diagram of the cylinder provided by this utility model;

[0020] Figure 4 is a schematic diagram of the piston rod provided by this utility model;

[0021] Figure 5 is a schematic diagram of the shock absorption mechanism provided by this utility model;

[0022] Figure 6 is a schematic diagram of the rotating mechanism provided by this utility model.

[0023] In the diagram: 1. Drone body; 2. Camera; 3. Propeller; 4. Cylinder; 401. Base plate; 5. Shock absorption mechanism; 6. Piston rod; 7. Piston; 701. Oil passage hole; 8. Spring; 9. Lifting ring; 901. Support rod; 902. Elastic support block; 903. Roller; 904. Heightening plate; 10. Connecting rod; 11. Support component; 1101. Storage slot; 12. Rotating mechanism; 1201. Rotating rod; 1202. Bevel gear. Detailed Implementation

[0024] To further understand the utility model content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0025] As shown in Figures 1 to 6, the drone aerial photography shock absorption device provided in this embodiment of the utility model includes a drone body 1, a camera 2 rotatably connected to the bottom of the drone body 1, propellers 3 rotatably connected to the four corners of the drone body 1, a cylinder 4 fixedly connected to the bottom of the propellers 3, a piston 7 slidably connected inside the cylinder 4, a piston rod 6 fixedly connected to the center of the lower end of the piston 7, and a shock absorption mechanism 5 provided below the piston rod 6.

[0026] The shock absorption mechanism 5 includes a spring 8. The upper end of the spring 8 is fixedly connected to the bottom of the cylinder 4. The lower end of the spring 8 is fixedly connected to a lifting ring 9. The lifting ring 9 is slidably sleeved on the piston rod 6. A support rod 901 is symmetrically rotatably connected below the lifting ring 9. A connecting rod 10 is rotatably connected between the support rod 901 and the piston rod 6. A support member 11 is fixedly connected to the bottom end of the piston rod 6.

[0027] It should be noted that the cylinder 4 is filled with hydraulic oil. When the drone is flying, the support rod 901 is in contact with the support member 11. When the drone lands, the support rod 901 touches the ground first. Under the action of the drone's gravity, the support rod 901 rotates outward under the action of the connecting rod 10. At the same time, the lifting ring 9 moves upward relative to the piston rod 6, which greatly compresses the spring 8 and removes most of the external force on the drone. This avoids the situation where the spring 8 cannot be compressed significantly due to the fixed connection between the spring 8 and the piston rod 6, thus failing to effectively remove the external force. The drone continues to descend until the support member 11 touches the ground. The remaining external force on the drone will push the piston rod 6 upward, allowing the hydraulic oil above the piston 7 to enter the cylinder 4 below the piston 7 through the narrow oil passage on the piston 7. Since the hydraulic oil cannot be compressed and the passage is narrow, this will create resistance, converting kinetic energy into heat energy and dissipating it. This will offset the remaining external force on the drone during landing as much as possible, achieving a shock absorption effect. This improves the shock absorption effect of the drone aerial photography shock absorption device and ensures a smooth landing of the drone.

[0028] In a preferred embodiment of this application, the outer circumference of the piston 7 is tightly fitted to the inner wall of the cylinder 4, and oil passage holes 701 are symmetrically provided on the piston 7.

[0029] It should be noted that when the piston rod 6 moves upward, the hydraulic oil above the piston 7 enters the cylinder 4 below the piston 7 through the oil passage 701 on the piston 7. The oil passage 701 is very narrow, and the hydraulic oil flow rate is very slow. The resistance converts the kinetic energy into heat energy and dissipates it.

[0030] In a preferred embodiment of this application, a base plate 401 is fixedly connected to the lower end of the cylinder 4, and the piston rod 6 passes through the base plate 401, with the piston rod 6 and the base plate 401 in close contact.

[0031] It should be noted that the piston rod 6 passes through the base plate 401 and can drive the piston 7 to move up and down inside the cylinder 4. This converts the resistance transmitted by the hydraulic oil to the external force on the drone into heat energy to remove the external force, ensuring that the drone can land smoothly.

[0032] In a preferred embodiment of this application, a rotating mechanism 12 is fixedly connected to the piston rod 6, and the connecting rod 10 is rotatably connected to the piston rod 6 through the rotating mechanism 12. The rotating mechanism 12 is U-shaped, and a rotating rod 1201 is rotatably connected inside the rotating mechanism 12. The rotating rod 1201 is fixedly connected to one end of the connecting rod 10, and bevel gears 1202 are fixedly sleeved at both ends of the rotating rod 1201, with adjacent bevel gears 1202 meshing together.

[0033] It should be noted that the upper end of the rotating mechanism 12 is closed to prevent the connecting rod 10 from rotating excessively. When the drone takes off, it can ensure that the support rod 901 can rotate inward to fit with the storage groove 1101 on the support member 11, so as to facilitate the drone's next landing. The adjacent bevel gears 1202 mesh with each other to ensure that the three sets of support rods 901 can open synchronously, avoiding the phenomenon that the support rods 901 cannot open completely due to uneven bottom surface, which would cause the drone to be unstable and tip over when it lands on the ground.

[0034] In a preferred embodiment of this application, the end of the connecting rod 10 away from the piston rod 6 is rotatably connected to the support rod 901. An elastic support block 902 is fixedly connected to the lower end of the support rod 901. A roller 903 is rotatably connected to the side of the elastic support block 902 away from each other. A heightening plate 904 is provided on one side of the roller 903. The heightening plate 904 is fixedly connected to the bottom of the elastic support block 902.

[0035] It should be noted that the elastic support block 902 can provide initial cushioning when the drone lands, preventing the spring 8 from not having enough time to contract due to hard contact between the elastic support block 902 and the hard ground, which could cause the drone to jump and damage components such as the camera 2. The roller 903 rolls with the ground when the elastic support block 902 contacts the ground, avoiding the phenomenon of poor sliding due to excessive friction between the elastic support block 902 and the ground. When the elastic support block 902 rolls to be parallel to the ground through the roller 903, the riser plate 904 contacts the ground. At this time, the roller 903 is removed from the ground to prevent the drone from rolling after it stops.

[0036] In a preferred embodiment of this application, the support member 11 is provided with symmetrically arranged storage grooves 1101, and the support rod 901 is engaged with the storage grooves 1101.

[0037] It should be noted that the spring 8 exerts a downward pulling force on the lifting ring 9 when the drone is in flight. The storage slot 1101 can pull the support rod 901 back when the drone takes off and make the support rod 901 fit with the storage slot 1101, so as to prevent the support rod 901 from shaking during the drone's flight and affecting the drone's flight and shooting process.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shock absorption device for drone aerial photography, comprising a drone body (1), characterized in that: A camera (2) is rotatably connected to the lower part of the drone body (1). Propellers (3) are rotatably connected to the four corners of the drone body (1). A cylinder (4) is fixedly connected to the lower part of the propeller (3). A piston (7) is slidably connected inside the cylinder (4). A piston rod (6) is fixedly connected to the center of the lower end of the piston (7). A shock-absorbing mechanism (5) is provided below the piston rod (6). The shock-absorbing mechanism (5) includes a spring (8). The upper end of the spring (8) is fixedly connected to the bottom of the cylinder (4). A lifting ring (9) is fixedly connected to the lower end of the spring (8). The lifting ring (9) is slidably sleeved on the piston rod (6). A support rod (901) is symmetrically rotatably connected to the lower part of the lifting ring (9). A connecting rod (10) is rotatably connected between the support rod (901) and the piston rod (6). A support member (11) is fixedly connected to the bottom end of the piston rod (6).

2. The drone aerial photography vibration reduction device according to claim 1, characterized in that: The outer circumference of the piston (7) is closely connected to the inner wall of the cylinder (4), and oil passage holes (701) are symmetrically opened on the piston (7).

3. The drone aerial photography vibration reduction device according to claim 1, characterized in that: The lower end of the cylinder (4) is fixedly connected to a base plate (401), and the piston rod (6) passes through the base plate (401). The piston rod (6) and the base plate (401) are closely fitted together.

4. The drone aerial photography vibration reduction device according to claim 1, characterized in that: A rotating mechanism (12) is fixedly connected to the piston rod (6), and the connecting rod (10) is rotatably connected to the piston rod (6) through the rotating mechanism (12).

5. The drone aerial photography vibration reduction device according to claim 4, characterized in that: The rotating mechanism (12) is U-shaped. A rotating rod (1201) is rotatably connected inside the rotating mechanism (12). The rotating rod (1201) is fixedly connected to one end of the connecting rod (10). Bevel gears (1202) are fixedly sleeved at both ends of the rotating rod (1201), and adjacent bevel gears (1202) are meshed together.

6. The drone aerial photography vibration reduction device according to claim 1, characterized in that: The end of the connecting rod (10) away from the piston rod (6) is rotatably connected to the support rod (901). An elastic support block (902) is fixedly connected to the lower end of the support rod (901). A roller (903) is rotatably connected to the side of the elastic support block (902) away from each other. A heightening plate (904) is provided on one side of the roller (903). The heightening plate (904) is fixedly connected to the bottom of the elastic support block (902).

7. The drone aerial photography vibration reduction device according to claim 1, characterized in that: The support member (11) is symmetrically provided with storage slots (1101), and the support rod (901) is engaged with the storage slots (1101).

Images