Angle-adjustable gimbal for aerial survey camera of fixed-wing unmanned aerial vehicle

Abstract

The utility model provides angle adjustable fixed wing unmanned aerial vehicle aerial survey camera holder, relate to unmanned aerial vehicle support technical field, including holder installation base, still include linear translation adjustment module and camera bearing installation module, linear translation adjustment module includes the guide slide that fixedly connected on holder installation base, the top end of guide slide is connected with the bearing slide that slides, bearing installation module, camera bearing installation module includes the camera installation base plate that fixedly connected on translation adjustment screw rod, the top fixedly connected with the slide limit card seat of camera installation base plate, such design has realized the position flexible adjustment of camera in the fuselage transverse, can real -time adjustment shooting horizontal coverage according to the aerial survey area range, and the adjustment process is stable and has no jam, has reduced the partial area miss of the local area because of the terrain obstruction, has promoted the integrity of aerial survey data.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) support technology, and in particular to an adjustable-angle fixed-wing UAV aerial survey camera gimbal. Background Technology

[0002] The UAV aerial survey camera gimbal is a multi-degree-of-freedom attitude adjustment device installed on a fixed-wing UAV. Through a control system that integrates sensors such as gyroscopes and accelerometers, it drives servo motors to compensate for attitude disturbances such as pitch and roll during flight in real time, and actively adjusts the camera optical axis angle to ensure stable imaging, controllable overlap, and multi-angle data acquisition under complex terrain and flight conditions, thereby improving the accuracy and efficiency of aerial photogrammetry.

[0003] In the field of fixed-wing UAV aerial surveying, the existing technology generally adopts the method of rigidly fixing the camera on the UAV, and its optical axis is usually set vertically downward or kept at a fixed tilt angle. Because of this installation method, when the UAV conducts aerial surveying in areas with large terrain undulations such as mountains and hills, the fixed downward shooting angle often leads to a very serious local occlusion of the target area.

[0004] Therefore, this utility model provides an adjustable angle fixed-wing UAV aerial survey camera gimbal. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an adjustable angle fixed-wing UAV aerial survey camera gimbal.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable-angle fixed-wing UAV aerial survey camera gimbal, including a gimbal mounting base, and further including a linear translation adjustment module and a camera support mounting module. The linear translation adjustment module includes a guide slide plate fixedly connected to the gimbal mounting base, and a support slide block is slidably connected to the top of the guide slide plate.

[0007] The camera mounting module includes a camera mounting base fixedly connected to a translation adjustment screw, and a sliding limit bracket fixedly connected to the top of the camera mounting base.

[0008] In a preferred embodiment, a vertical support plate is slidably connected to the outer side of the bearing slide, and a primary guide groove is formed inside the bearing slide and the vertical support plate.

[0009] In a preferred embodiment, a translation adjustment screw is fixedly connected to the primary guide groove, and a primary adjustment knob is threaded onto the outer side of the translation adjustment screw.

[0010] In a preferred embodiment, the sliding limit holder has a secondary bearing groove inside, and a camera fixing frame is slidably connected to the outside of the sliding limit holder.

[0011] In a preferred embodiment, the camera mounting frame has camera mounting holes inside.

[0012] In a preferred embodiment, a locking screw is slidably connected to the secondary bearing groove, and a secondary locking knob is threaded onto the outer side of the locking screw.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. The first-level adjustment knob drives the translation adjustment screw to rotate. The threaded transmission between the screw and the nut seat drives the bearing slide to slide horizontally along the guide slide, thereby driving the camera bearing mounting module to move horizontally in sync. This design enables flexible adjustment of the camera's horizontal position on the fuselage. The horizontal coverage range of the shooting can be adjusted in real time according to the range of the aerial survey area. The adjustment process is smooth and without jamming, reducing the missed shooting of local areas due to terrain obstruction and improving the integrity of aerial survey data.

[0015] 2. By loosening the secondary locking knob, the camera fixing frame is pushed to rotate along the arc-shaped slide rail of the sliding limit bracket. After adjusting to the target angle, the secondary locking knob is rotated in the opposite direction to rigidly fix the frame and the bracket by tightening the fixing screw. This design achieves precise adjustment and stable locking of the camera's pitch angle, which can flexibly adapt to the shooting needs of different slope terrains. The angle adjustment is smooth and there is no loosening after fixing. It can avoid obstructions such as mountains and hills, so that the lens optical axis can be accurately pointed to the target area, significantly reducing the local obstruction phenomenon in complex terrain. Attached Figure Description

[0016] Figure 1 A three-dimensional view of the adjustable-angle fixed-wing UAV aerial survey camera gimbal provided by this utility model;

[0017] Figure 2 A schematic diagram of the camera fixing frame structure of the adjustable-angle fixed-wing UAV aerial survey camera gimbal provided by this utility model.

[0018] Figure 3 A schematic diagram of the camera mounting module structure of the adjustable-angle fixed-wing UAV aerial survey camera gimbal provided by this utility model;

[0019] Figure 4 A schematic diagram of the linear translation adjustment module structure of the adjustable-angle fixed-wing UAV aerial survey camera gimbal provided by this utility model.

[0020] Legend:

[0021] 1. Gimbal mounting base;

[0022] 2. Linear translation adjustment module; 21. Guide slide plate; 22. Bearing slide block; 23. Vertical support plate; 24. Primary guide slide; 25. Translation adjustment screw; 26. Primary adjustment knob;

[0023] 3. Camera mounting module; 31. Camera mounting base; 32. Sliding limit bracket; 33. Secondary load-bearing slide; 34. Camera fixing frame; 35. Camera mounting hole; 36. Locking screw; 37. Secondary locking knob. Detailed Implementation

[0024] 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.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, this embodiment provides a technical solution: an adjustable angle fixed-wing UAV aerial survey camera gimbal, including a gimbal mounting base 1 and a linear translation adjustment module 2. The linear translation adjustment module 2 includes a guide slide plate 21 fixedly connected to the gimbal mounting base 1. A bearing slide 22 is slidably connected to the top of the guide slide plate 21. A vertical support plate 23 is slidably connected to the outside of the bearing slide 22. A primary guide groove 24 is opened inside the bearing slide 22 and the vertical support plate 23. A translation adjustment screw 25 is fixedly connected to the primary guide groove 24. A primary adjustment knob 26 is threadedly connected to the outside of the translation adjustment screw 25.

[0026] The gimbal mounting base 1, serving as the fundamental load-bearing component of the entire gimbal, is rigidly connected to the fuselage of the fixed-wing UAV at one end and the linear translation adjustment module 2 is fixed to the other end, achieving stable assembly between the gimbal and the UAV. Made of high-strength materials, it ensures stable support for the entire gimbal during high-speed flight and airflow disturbances, preventing camera vibration or displacement due to base loosening and ensuring the clarity of aerial survey images. The guide slide 21 of the linear translation adjustment module 2 is fixed to the top of the gimbal mounting base 1, and its surface is machined with high-precision slide rails to provide horizontal sliding guidance for the support slide 22, limiting its movement trajectory to a straight line. The precise fit between the slide rail and the slide block ensures that the support slide block 22 moves smoothly without jamming or offset, improving the straightness and stability of horizontal adjustment and avoiding camera viewing angle deviation caused by sliding misalignment. The support slide block 22, as the intermediate support component, is connected to a vertical support plate 23 at its top and slides against a guide plate 21 at its bottom, allowing it to move horizontally along the guide plate 21. This horizontal movement synchronously moves the upper camera support mounting module 3, expanding the camera's horizontal shooting coverage area and reducing blind spots in aerial surveying. The vertical support plate 23 is vertically connected to the outside of the support slide block 22, forming an L-shape with it. The supporting structure features an internal primary guide groove 24, providing an installation reference for the translation adjustment screw 25 and enhancing the module's torsional resistance. Vertical support improves the overall structural rigidity of the module, resisting high-frequency vibrations during UAV flight and preventing a decrease in adjustment accuracy due to structural deformation. The primary guide groove 24 is located at the junction of the bearing slide 22 and the vertical support plate 23, and contains a guide step that engages with the nut seat of the translation adjustment screw 25 to limit the direction and stroke of translation adjustment. Physical limits prevent component collisions caused by excessive adjustment, and the guide step also reduces radial runout of the screw drive. The adjustment is improved by moving the screw 25 axially along the primary guide groove 24. One end is rotatably connected to the bearing slide 22, and the other end passes through the vertical support plate 23 and is connected to the primary adjustment knob 26. The screw rotation drives the nut seat to move along the groove. The primary adjustment knob 26 is threaded to the end of the screw 25 and has anti-slip texture on the surface for the operator to rotate. The screw is driven to rotate through torque transmission. The human-machine interface is user-friendly, the rotation resistance is moderate, and it is easy to make quick coarse adjustments or fine adjustments. The self-locking characteristic of the threaded connection ensures the stability of the position after adjustment. No additional locking parts are required, simplifying the operation process.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the camera mounting module 3 includes a camera mounting base 31 fixedly connected to the translation adjustment screw 25. A sliding limit bracket 32 ​​is fixedly connected to the top of the camera mounting base 31. A secondary bearing groove 33 is opened inside the sliding limit bracket 32. A camera fixing frame 34 is slidably connected to the outside of the sliding limit bracket 32. A camera mounting hole 35 is opened inside the camera fixing frame 34. A locking screw 36 is slidably connected to the secondary bearing groove 33. A secondary locking knob 37 is threadedly connected to the outside of the locking screw 36.

[0028] The camera mounting module 3, specifically the camera mounting base plate 31, has one end fixed to the nut seat of the translation adjustment screw 25 and the other end connected to the sliding limit bracket 32. Serving as a transition component between linear translation adjustment and angle adjustment, it transmits translational displacement and supports the camera mounting frame 34. The sliding limit bracket 32 ​​is fixed to the top of the camera mounting base plate 31 and has an arc-shaped slide rail machined on its inner side, which slides in conjunction with the camera mounting frame 34. Limiting bosses at both ends define the angle adjustment range. The radius of curvature of the arc-shaped slide rail has been optimized to ensure that the lens optical axis remains constant during camera pitch adjustment. The final direction points to the target area. The secondary bearing slide 33 is opened along the arc-shaped slide rail of the sliding limit bracket 32 ​​and cooperates with the locking screw 36. The guide screw slides synchronously with the camera fixing frame 34, and at the same time provides a force support point for locking. The clearance fit between the slide 33 and the screw can reduce the jamming during angle adjustment and ensure smooth pitch angle adjustment. The arc-shaped trajectory design is concentric with the camera rotation center to avoid lens position displacement during adjustment. The camera fixing frame 34 is slidably connected to the arc-shaped slide rail of the sliding limit bracket 32, and has a groove inside that adapts to the shape of the camera. The aerial survey camera is fixed via the camera mounting holes 35, allowing for pitch angle adjustment by rotating with the slide rail. The frame groove uses a flexible rubber liner to prevent wear on the camera housing and buffer vibrations, accommodating mainstream aerial survey camera sizes. The camera mounting holes 35 are evenly distributed around the camera mounting frame 34. Bolts or quick-release clips are used to pass through these holes to secure the camera to the frame. Multiple sets of holes can accommodate mounting positions of cameras of different sizes, facilitating easy installation and disassembly. One end of the locking screw 36 passes through the secondary load-bearing slide groove 33 and engages with the camera mounting frame 34. One end is connected to the threaded connection, and the other end is connected to the secondary locking knob 37. After the angle is adjusted to the correct position, the screw is tightened to achieve rigid fixation between the frame and the mounting bracket. The screw is made of high-strength alloy material, which can provide sufficient locking force to ensure that there is no loosening after the angle is fixed. The secondary locking knob 37 is threadedly connected to the end of the locking screw 36. When rotated, the end face presses against the sliding limit mounting bracket 32, locking the camera fixing frame 34 at the target angle. It adopts a butterfly design or a structure with a handle, which can quickly lock / unlock, improve the angle adjustment efficiency, and reduce the preparation time for aerial survey operations.

[0029] Working principle:

[0030] like Figure 1 - Figure 4 As shown:

[0031] In use: First, the gimbal mounting base 1 provides stable support for the entire device. One end is rigidly connected to the fuselage of the fixed-wing UAV, and the other end is fixed to the linear translation adjustment module 2, laying the foundation for subsequent adjustment movements. Then, the operator rotates the first-level adjustment knob 26, which drives the translation adjustment screw 25 to rotate axially along the first-level guide groove 24. When the translation adjustment screw 25 rotates, its surface thread and the mating nut seat form a transmission, which drives the nut seat to slide along the guide step in the first-level guide groove 24. At the same time, the bearing slide 22, due to the precise fit between its bottom and the guide slide plate 21 and the sliding connection between its outer side and the vertical support plate 23, will move horizontally in a straight line along the guide slide plate 21 in sync with the nut seat. The vertical support plate 23 also moves synchronously with the bearing slide 22. The horizontal movement of the bearing slide 22 will drive the camera mounting base 31 to move horizontally in a straight line. The camera mounting module 3 is moved horizontally in sync with the entire system, thereby adjusting the lateral position of the aerial survey camera on the fuselage and expanding the shooting coverage. When it is necessary to adjust the camera pitch angle, first loosen the secondary locking knob 37 to release the locking between the sliding limit bracket 32 ​​and the camera fixing frame 34. Then, push the camera fixing frame 34. Because the camera fixing frame 34 and the sliding limit bracket 32 ​​slide along the arc-shaped slide rail, and the locking screw 36 slides synchronously with the camera fixing frame 34 in the secondary bearing slide groove 33, the camera fixing frame 34 can be driven to rotate along the arc-shaped slide rail to adjust the camera pitch angle. After the angle is adjusted to the correct position, rotate the secondary locking knob 37 in the opposite direction. The locking screw 36 then rigidly locks the camera fixing frame 34 and the sliding limit bracket 32, thereby fixing the target pitch angle of the camera and ensuring a stable shooting angle.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An adjustable-angle fixed-wing UAV aerial survey camera gimbal, comprising a gimbal mounting base (1), characterized in that, It also includes a linear translation adjustment module (2) and a camera support mounting module (3). The linear translation adjustment module (2) includes a guide slide plate (21) fixedly connected to the gimbal mounting base (1). The top of the guide slide plate (21) is slidably connected to a support slide plate (22). The camera mounting module (3) includes a camera mounting base plate (31) fixedly connected to the translation adjustment screw (25), and a sliding limit bracket (32) is fixedly connected to the top of the camera mounting base plate (31).

2. The camera gimbal according to claim 1, characterized in that, A vertical support plate (23) is slidably connected to the outer side of the bearing slide (22), and a primary guide groove (24) is provided inside the bearing slide (22) and the vertical support plate (23).

3. The camera gimbal according to claim 2, characterized in that, A translation adjustment screw (25) is fixedly connected to the primary guide groove (24), and a primary adjustment knob (26) is threadedly connected to the outer side of the translation adjustment screw (25).

4. The camera gimbal according to claim 3, characterized in that, The sliding limit bracket (32) has a secondary bearing groove (33) inside, and a camera fixing frame (34) is slidably connected to the outside of the sliding limit bracket (32).

5. The camera gimbal according to claim 4, characterized in that, The camera mounting frame (34) has a camera mounting hole (35) inside.

6. The camera gimbal according to claim 4, characterized in that, A locking screw (36) is slidably connected to the secondary bearing slide groove (33), and a secondary locking knob (37) is threadedly connected to the outer side of the locking screw (36).

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