A forestry surveying and mapping unmanned aerial vehicle camera fixing device

Abstract

The utility model provides a kind of forestry surveying and mapping unmanned aerial vehicle camera fixing device, it is related to unmanned aerial vehicle technical field, including unmanned aerial vehicle body, the bottom plate is fixedly connected in unmanned aerial vehicle body bottom, fixed mechanism is provided on the bottom plate, camera body is fixedly installed on the fixed mechanism, opening and closing mechanism is provided in the front side of the fixed mechanism, baffle is connected on the opening and closing mechanism, the utility model is driven by motor to make the clamping block of both sides clamping and tight wedge block, make camera body firmly fixed on first fixed plate, effectively resist violent vibration and impact in forestry flight, avoid the risk of camera loosening, guarantee the accuracy of surveying and mapping data and the security of equipment, by electric push rod and gear rack drive, the opening and closing of protective baffle can be remotely controlled, close baffle when taking off and landing and transferring airway, protect camera lens from accidental collision and pollution, open when operating, ensure imaging without obstruction, thereby reduce the risk of lens damage and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and more specifically, to a camera fixing device for forestry surveying UAVs. Background Technology

[0002] Unmanned aerial vehicle (UAV) forestry surveying technology, equipped with sensors such as visible light, multispectral, and lidar, can efficiently and accurately acquire information on forest resource distribution, tree growth, and topography, and has become one of the core methods for modern forestry surveys and monitoring. In this application, the camera, as the core data acquisition device, directly determines the quality of the surveying results through its stability and security.

[0003] Currently, common drone camera mounting devices mostly employ simple quick-release plates combined with damped ball heads or rigid brackets. These existing technologies expose numerous technical problems in complex forestry application scenarios: First, forestry drones operate in harsh environments, often facing strong turbulence and high-intensity, high-frequency vibrations from frequent maneuvers. Traditional mounting methods lack sufficient locking force, easily causing slight camera displacement or even loosening during flight, resulting in blurred images and, in severe cases, equipment crashes. Second, existing devices generally lack effective physical protection structures for the camera lens, making it susceptible to scratches or contamination, affecting image quality and increasing maintenance costs. Utility Model Content

[0004] The main objective of this invention is to provide a camera fixing device for forestry surveying drones, which can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A camera mounting device for a forestry surveying drone includes a drone body, a base plate fixedly connected to the bottom of the drone body, a fixing mechanism provided on the base plate, a camera body fixedly mounted on the fixing mechanism, an opening and closing mechanism provided on the front side of the fixing mechanism, and a baffle connected to the opening and closing mechanism.

[0006] Preferably, the fixing mechanism includes a first fixing plate and a second fixing plate, which are fixedly installed on the lower surface of the base plate. A bidirectional lead screw and a slide rod are respectively provided on both sides of the first fixing plate and the second fixing plate. A motor is fixedly installed on one side of the first fixing plate, and the output end of the motor is fixedly connected to one end of the bidirectional lead screw.

[0007] Preferably, both ends of the bidirectional lead screw are threaded with movable blocks, and the end of the movable block away from the bidirectional lead screw is slidably connected to the slide rod. Clamping blocks are fixedly connected to the bottom of the movable blocks on both sides.

[0008] Preferably, wedges are fixedly connected to both sides of the upper end of the camera body, the two wedges are symmetrically arranged with their tips facing outwards, and the middle parts of the clamps on both sides are slidably connected to the two wedges respectively.

[0009] Preferably, the opening and closing mechanism includes a fixed frame, which is fixedly connected to the lower surface of the base plate, and a rotating shaft is fixedly connected inside the lower end of the fixed frame, with one end of the baffle fixedly connected to the rotating shaft.

[0010] Preferably, a gear is fixedly connected to the middle of the rotating shaft, a rack is meshed with the upper end of the gear, and a limit frame is fixedly connected to the upper surface of the rack.

[0011] Preferably, a limiting plate is slidably connected inside the limiting frame, the limiting plate is fixedly installed inside the fixed frame, and a connecting block is fixedly connected to one end of the limiting frame, the connecting block being fixedly connected to the output end of the electric push rod.

[0012] Preferably, a mounting plate is fixedly connected to the inner wall of the top of the fixed frame, and both ends of the electric push rod body are fixedly connected to the second fixed plate and the mounting plate, respectively.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) By driving the bidirectional lead screw through the motor, the clamping blocks move synchronously in opposite directions and bite the wedges. The inclined plane self-locking principle generates huge vertical downward pressing force and horizontal clamping force, which realizes the precise locking of the camera in multiple directions such as up and down, front and back, and left and right. It effectively resists the violent high-frequency vibration and sudden impact during forestry flight, fundamentally eliminating the possibility of camera loosening, displacement or falling, and ensuring the accuracy of surveying data and the safety of equipment.

[0014] (2) The opening and closing of the protective baffle can be remotely controlled by electric push rod and gear rack transmission. The baffle is closed during take-off, landing and route transfer to protect the camera lens from accidental collision and contamination. It is opened during operation to ensure unobstructed imaging, thereby reducing the risk of lens damage and maintenance costs. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the fixing mechanism and opening / closing mechanism in this utility model; Figure 3 This is a schematic diagram of the front view structure of this utility model; Figure 4 This utility model Figure 3 3D schematic diagram of the cross-sectional structure of the middle AA section; Figure 5 This utility model Figure 4 Enlarged view of the structure at point B in the middle; Figure 6 This utility model Figure 4 Enlarged view of the structure at point C.

[0016] In the diagram: 1. UAV body; 2. Fixing mechanism; 21. First fixing plate; 22. Two-way lead screw; 23. Slide rod; 24. Motor; 25. Movable block; 26. Clamping block; 27. Wedge block; 28. Second fixing plate; 3. Opening and closing mechanism; 31. Fixing frame; 32. Electric push rod; 33. Limiting plate; 34. Rotating shaft; 35. Connecting block; 36. Mounting plate; 37. Limiting frame; 38. Rack; 39. Gear; 4. Baffle; 5. Base plate; 6. Camera body. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0018] like Figure 1 , Figure 3 , Figure 4 As shown in the figure, this utility model embodiment proposes a camera fixing device for forestry surveying drones, including a drone body 1, a base plate 5 fixedly connected to the bottom of the drone body 1, a fixing mechanism 2 provided on the base plate 5, a camera body 6 fixedly installed on the fixing mechanism 2, an opening and closing mechanism 3 provided on the front side of the fixing mechanism 2, and a baffle 4 connected to the opening and closing mechanism 3.

[0019] like Figure 1 , Figure 2 , Figure 6 As shown, the fixing mechanism 2 includes a first fixing plate 21 and a second fixing plate 28. The first fixing plate 21 and the second fixing plate 28 are fixedly installed on the lower surface of the base plate 5. A bidirectional lead screw 22 and a slide bar 23 are respectively provided on both sides of the first fixing plate 21 and the second fixing plate 28. A motor 24 is fixedly installed on one side of the first fixing plate 21. The output end of the motor 24 is fixedly connected to one end of the bidirectional lead screw 22. Both ends of the bidirectional lead screw 22 are threadedly connected to movable blocks 25. The end of the movable block 25 away from the bidirectional lead screw 22 is slidably connected to the slide bar 23. Clamping blocks 26 are fixedly connected to the bottom of both movable blocks 25. Wedges 27 are fixedly connected to both sides of the upper end of the camera body 6. The two wedges 27 are symmetrically arranged with their tips facing outward. The middle parts of the clamping blocks 26 on both sides are slidably connected to the two wedges 27 respectively.

[0020] In the specific setup, the bidirectional lead screw 22 is rotatably mounted on the first fixed plate 21 and the second fixed plate 28, and the slide rod 23 is fixedly mounted on the first fixed plate 21 and the second fixed plate 28. The first fixed plate 21 is L-shaped, and the camera body 6 is fixed on the lower end plate of the first fixed plate 21. The fixing mechanism 2 is used to install and fix the camera body 6. During fixing, the bottom of the camera body 6 is placed on the first fixed plate 21, so that the two wedges 27 at the upper end of the camera body 6 are located between the two clamping blocks 26 and correspond to the inclined grooves in the middle of the two clamping blocks 26. Then, the bidirectional lead screw 22 is driven to rotate by the starting motor 24. Since the threads at both ends of the bidirectional lead screw 22 are opposite, and the movable block 25 Limited by the sliding rod 23, the two movable blocks 25 can only slide linearly. Therefore, the two movable blocks 25 move synchronously towards or away from each other, driving the bottom clamping block 26 to move synchronously. When the clamping block 26 moves towards each other, it will engage with the wedge block 27. As the clamping force increases, the wedge block 27 is pressed downward, thereby firmly pressing the camera body 6 onto the first fixed plate 21. At the same time, the clamping block 26 also clamps the wedge block 27. The inclined surface inside the clamping block 26 is interference-fitted with the two sides of the wedge block 27, ultimately achieving the fixation of the camera body 6 in multiple directions, including up and down, front and back, and left and right. This effectively prevents the camera body 6 from loosening or falling due to vibration or impact during forestry surveying and mapping, and improves the stability and safety of forestry surveying and mapping data acquisition.

[0021] like Figure 1 , Figure 2 , Figure 5 As shown, the opening and closing mechanism 3 includes a fixed frame 31, which is fixedly connected to the lower surface of the base plate 5. A rotating shaft 34 is fixedly connected to the lower end of the fixed frame 31. One end of the baffle 4 is fixedly connected to the rotating shaft 34. A gear 39 is fixedly connected to the middle of the rotating shaft 34. A rack 38 is meshed with the upper end of the gear 39. A limit frame 37 is fixedly connected to the upper surface of the rack 38. A limit plate 33 is slidably connected inside the limit frame 37. The limit plate 33 is fixedly installed inside the fixed frame 31. A connecting block 35 is fixedly connected to one end of the limit frame 37. The connecting block 35 is fixedly connected to the output end of the electric push rod 32. An mounting plate 36 is fixedly connected to the top inner wall of the fixed frame 31. The two ends of the main body of the electric push rod 32 are fixedly connected to the second fixed plate 28 and the mounting plate 36, respectively.

[0022] The main body of the electric push rod 32 is stably fixed by the second fixing plate 28 and the mounting plate 36. The output end is connected to one end of the limiting frame 37 through the connecting block 35. The limiting frame 37 is fixedly connected to the rack 38. The rack 38 meshes with the gear 39. The gear 39 is coaxially connected to one end of the baffle 4. The baffle 4 is set on the front side of the camera body 6. During the take-off and landing of the UAV or during non-shooting cruise, the baffle 4 can be controlled to close, providing physical protection for the expensive camera lens and effectively preventing branches, flying sand, insects, etc. from hitting or contaminating the lens, greatly reducing the risk of lens damage and maintenance costs. After entering the predetermined surveying area, the baffle 4 can be controlled to open to ensure that the shooting field of view is unobstructed and to guarantee the quality of the surveying image.

[0023] When lens protection is required, the electric push rod 32 is activated through the control terminal. The output end of the electric push rod 32 extends and drives the limit block and rack 38 to move through the connecting block 35, so that the gear 39, the rotating shaft 34 and the baffle 4 rotate synchronously, so that the baffle 4 rotates from a horizontal state to a vertical state and blocks in front of the lens. Conversely, the baffle 4 is reset to facilitate shooting.

[0024] Working principle of a camera mounting device for forestry surveying drones: When installing the camera body 6, it is placed on the first fixed plate 21. The starting motor 24 drives the bidirectional lead screw 22 to rotate, causing the clamping blocks 26 on both sides to come closer together. Through sliding engagement with the surface of the wedge block 27, the camera body 6 is firmly pressed onto the first fixed plate 21. The clamping blocks 26 clamp the wedge block 27, improving the stability of the camera body 6. During the take-off and landing of the UAV or during non-shooting cruise, the electric push rod 32 is activated to extend its output end, driving the rack 38 to move, causing the gear 39 and the baffle 4 to rotate. The baffle 4 rotates from a horizontal state to a vertical state, blocking in front of the lens to prevent branches, flying sand, insects, etc. from hitting or contaminating the lens, reducing the risk of lens damage and maintenance costs. During surveying, the output end of the electric push rod 32 is retracted, and the baffle 4 is reset to ensure that the shooting field of view is unobstructed and to guarantee the quality of the surveying image.

[0025] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A camera fixing device for a forestry surveying drone, comprising the drone body (1), characterized in that: The bottom of the drone body (1) is fixedly connected to a base plate (5), a fixing mechanism (2) is provided on the base plate (5), a camera body (6) is fixedly installed on the fixing mechanism (2), an opening and closing mechanism (3) is provided on the front side of the fixing mechanism (2), and a baffle (4) is connected to the opening and closing mechanism (3).

2. The camera fixing device for forestry surveying UAVs according to claim 1, characterized in that: The fixing mechanism (2) includes a first fixing plate (21) and a second fixing plate (28). The first fixing plate (21) and the second fixing plate (28) are fixedly installed on the lower surface of the base plate (5). A bidirectional lead screw (22) and a slide rod (23) are respectively provided on both sides of the first fixing plate (21) and the second fixing plate (28). A motor (24) is fixedly installed on one side of the first fixing plate. The output end of the motor (24) is fixedly connected to one end of the bidirectional lead screw (22).

3. The camera fixing device for forestry surveying UAVs according to claim 2, characterized in that: Both ends of the bidirectional lead screw (22) are threaded with movable blocks (25). The end of the movable block (25) away from the bidirectional lead screw (22) is slidably connected to the slide rod (23). Both sides of the movable block (25) are fixedly connected with clamping blocks (26).

4. The camera fixing device for forestry surveying UAVs according to claim 3, characterized in that: Both sides of the upper end of the camera body (6) are fixedly connected to wedges (27). The two wedges (27) are symmetrically arranged with their tips facing outwards. The middle parts of the clamps (26) on both sides are slidably connected to the two wedges (27).

5. A camera fixing device for forestry surveying UAVs according to claim 2, characterized in that: The opening and closing mechanism (3) includes a fixed frame (31), which is fixedly connected to the lower surface of the base plate (5). A rotating shaft (34) is fixedly connected inside the lower end of the fixed frame (31), and one end of the baffle (4) is fixedly connected to the rotating shaft (34).

6. The camera fixing device for forestry surveying UAVs according to claim 5, characterized in that: A gear (39) is fixedly connected to the middle of the rotating shaft (34), and a rack (38) is meshed with the upper end of the gear (39). A limit frame (37) is fixedly connected to the upper surface of the rack (38).

7. A camera fixing device for forestry surveying UAVs according to claim 6, characterized in that: The limiting frame (37) is internally connected to a limiting plate (33), which is fixedly installed on the inside of the fixed frame (31). One end of the limiting frame (37) is fixedly connected to a connecting block (35), which is fixedly connected to the output end of the electric push rod (32).

8. The camera fixing device for forestry surveying UAVs according to claim 7, characterized in that: The mounting plate (36) is fixedly connected to the inner wall of the top of the fixed frame (31), and the two ends of the main body of the electric push rod (32) are fixedly connected to the second fixed plate (28) and the mounting plate (36) respectively.

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