A detector for unmanned aerial vehicle flight angle trim

Abstract

The application relates to the technical field of man-machine flight angle balancing, and discloses a detector for unmanned aerial vehicle flight angle balancing, which comprises a middle table, the periphery of the middle table is provided with side arms in a ring shape at equal intervals, the transmission end of the side arms is in transmission connection with the driving end of the middle table, meanwhile, the middle table drives the four side arms to work synchronously, the movable end of the side arms is provided with a buffer frame, the lifting end of the buffer frame is provided with a pressure adjusting assembly, and the end, away from the buffer frame, of the pressure adjusting assembly is provided with a clamping piece. The detector for unmanned aerial vehicle flight angle balancing can lock and fix the unmanned aerial vehicle arm at the detection position through the pressure adjusting assembly, so that the relative position between the arm and the detection mechanism can be kept unchanged during the detection process, and the displacement adjustment of the four clamping pieces is synchronized by the middle table, which not only adapts to the clamping of different unmanned aerial vehicle arms, but also ensures that the four sliding supports can always take the detection center as the origin when different models and different sizes of unmanned aerial vehicles are adapted.

Description

Technical Field

[0001] This invention relates to the field of human-machine flight angle trimming technology, and more particularly to a detector for unmanned aerial vehicle (UAV) flight angle trimming. Background Technology

[0002] The stability and control precision of drones, especially multi-rotor drones, largely depend on the symmetry and balance of their individual arms and the motors and propellers they support. Precise balancing of the arm deployment angles is a crucial step in ensuring flight quality during the production, assembly, and maintenance of drones.

[0003] In the prior art, several detection devices for drone angle trim have emerged. One typical detector uses a sliding support to move the angle trim detection mechanism, bringing it into contact with the drone's arm for detection.

[0004] During the testing process, when the testing mechanism comes into contact with the arm, the arm is prone to exerting a lateral force on the sliding bracket due to the weight of the drone or external disturbances, causing the sliding bracket to slide and deviate. This deviation will not only introduce measurement errors and affect the accuracy of the test results, but may even scratch or damage the drone arm due to the instability of the mechanism.

[0005] To accommodate drones of different sizes, the four sliding supports need to be adjusted independently or collaboratively. However, in practice, it is difficult to ensure that the sliding distances of the four supports are strictly synchronized and symmetrical. If the positions of the four supports are not precisely symmetrically distributed relative to the detection center, the drone's arms will be in a non-centrally positioned state on the device, resulting in one side of the drone's arm being longer and the other side shorter. This asymmetrical support state will cause the drone to be in a tilted stress state during detection, failing to accurately reflect its own angular balance and severely affecting the reliability and effectiveness of the detection. Summary of the Invention

[0006] In view of the fact that the existing detectors cannot accurately reflect their own angle balancing, which seriously affects the reliability and effectiveness of the detection, this invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a detector for drone flight angle trimming, which aims to provide a detection scheme that can firmly clamp the drone arm and achieve synchronous and symmetrical adjustment.

[0008] To solve the above technical problems, the present invention provides the following technical solution: a detector for flight angle trimming of unmanned aerial vehicles, comprising a central platform, wherein side arms are installed in a ring at equal intervals on the peripheral surface of the central platform, and the transmission end of the side arms is connected to the driving end of the central platform. At the same time, the central platform drives the four side arms to work synchronously. A buffer frame is installed on the movable end of the side arms, and a pressure adjustment component is installed on the lifting end of the buffer frame. A clamping component is provided at the end of the pressure adjustment component away from the buffer frame.

[0009] The clamping component includes a movable clamp fixed on the movable end of the pressure regulating component and a fixed clamp fixed on the upper pressure regulating component. The movable clamp and the fixed clamp are respectively provided with an upper clamping cavity and a lower clamping cavity on their opposite surfaces. A gravity sensor is fixed inside the lower clamping cavity.

[0010] As an improved technical solution, the side arm includes a crossbeam strip, and a translation cavity is opened at one end of the crossbeam strip near the center platform. A mounting block is slidably arranged inside the translation cavity, and a transmission block is welded to the top of the mounting block.

[0011] As an improved technical solution, slide bars are fixed on both sides inside the translation cavity, and a limiting slide rail is provided on the transmission block for the slide bars to pass through. The first threaded rod is threadedly installed on the transmission block through a threaded hole.

[0012] As an improved technical solution, the central platform includes a circular compartment, a circular plate is fixed to the top of the circular compartment, a rotating cavity is formed at the center of the circular plate, a face gear is rotatably installed inside the rotating cavity, and a helical gear that meshes with the face gear is sleeved on one end of the first threaded rod located inside the rotating cavity.

[0013] As an improved technical solution, a servo motor is installed inside the cylindrical chamber, and a rotating ring is installed on the output shaft of the servo motor, with a face gear fixed on the top surface of the rotating ring.

[0014] As an improved technical solution, the buffer frame includes a vertical seat fixed to the top of the mounting block. The top of the vertical seat has a lifting cavity. A lifting bar is slidably installed longitudinally inside the vertical seat. A light sensor is fixed in the middle of the lifting cavity. A sliding hole for the light sensor to pass through is opened in the middle of the lifting bar. A spring is sleeved on the light sensor and located on the upper surface of the lifting bar.

[0015] As an improved technical solution, limiting grooves are provided on both ends of the lifting bar, and a limiting guide bar for the limiting grooves to pass through is fixed inside the lifting cavity.

[0016] As an improved technical solution, the pressure regulating assembly includes a base fixed on the lifting bar, an regulating cavity is provided on the top of the base, a lifting block is longitudinally slidably installed inside the regulating cavity, and a movable clamp is fixed on the lifting block. A reinforcing rib is welded to the end face of the base away from the movable clamp, and the bottom of the reinforcing rib is welded to the upper surface of the lifting bar.

[0017] As an improved technical solution, the lifting block is threaded with a second threaded rod through a threaded hole. The second threaded rod has a guide rail fixed inside and on the side away from the movable clamp. The lifting block has a groove for the guide rail to pass through.

[0018] As an improved technical solution, an upper rubber strip is bonded to the inner wall of the upper clamping cavity, and a blocking block is fixed inside the fixed clamp and above the gravity sensor. A lower rubber strip is bonded to the end face of the blocking block away from the gravity sensor.

[0019] After adopting the above technical solution, the beneficial effects of the present invention are:

[0020] 1. This invention, under the transverse thread transmission action of the threaded hole on the transmission block and the first threaded rod, synchronously drives the clamping component to adjust the horizontal displacement, which is used to adjust the distance between the platform and the clamping component, adapting to the clamping and locking of the arm of UAVs of different sizes, effectively improving the applicability and practicality of the detector, and is convenient to adjust and easy to use.

[0021] 2. In this invention, a servo motor drives a rotating ring to rotate a face gear. Under the meshing transmission of the face gear and the helical gear, the servo motor synchronously drives four first threaded rods to rotate, causing the four clamping parts to move towards the center or towards the outside at the same time. This maintains the consistency of the adjustment of the four clamping parts, thereby ensuring the consistency of the clamping position of the UAV arm, making the force more balanced, and improving the detection accuracy.

[0022] 3. This invention clamps and locks the drone arm between a movable clamp and a fixed clamp. By clamping the drone arm, it prevents the drone arm from sliding between the movable and fixed clamps during operation, maintaining the drone arm in a static state during detection. This ensures the balanced force on each arm, further improving detection accuracy. Furthermore, the lower and upper rubber strips improve contact with the outer wall of the arm, increasing the friction coefficient and ensuring a firm clamping grip. They also protect the arm from damage during clamping. Simultaneously, the blocking block protects the gravity sensor, preventing direct contact and pressure from the arm, thus extending the gravity sensor's lifespan.

[0023] 4. In this invention, the second threaded rod is driven to rotate by a knob. Under the longitudinal thread transmission between the second threaded rod and the threaded hole on the lifting block, the movable clamp is driven to move vertically up and down. The distance between the movable clamp and the fixed clamp can be adjusted to adapt to the size of the machine arm. This not only makes the adjustment convenient but also effectively ensures the locking degree of the machine arm.

[0024] 5. This invention controls the clamping components to stably and reliably lock and fix the drone arm at the detection position through the pressure adjustment component, ensuring that the relative position of the arm and the detection mechanism remains unchanged during the detection process. Furthermore, the central platform synchronously adjusts the displacement of the four clamping components, which not only adapts to the clamping of different drone arms, but also ensures that when adapting to drones of different models and sizes, the four sliding brackets can always move synchronously and equidistantly radially with the detection center as the origin. This allows the center of the drone to be automatically and accurately aligned with the center of the detector. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0026] Figure 1 This is a top view of the detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0027] Figure 2 This is a top view schematic diagram of the side arm of a detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0028] Figure 3 This is a top view of the central platform of a detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0029] Figure 4 This is a schematic diagram of the buffer frame, pressure adjustment assembly, and clamping component of a detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0030] Figure 5 This is a cross-sectional schematic diagram of the vertical support of a detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0031] Figure 6 This is a cross-sectional schematic diagram of the base of a detector for balancing the flight angle of an unmanned aerial vehicle (UAV) according to the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Central platform; 11. Circular compartment; 12. Circular plate; 13. Rotating cavity; 14. Rotating ring; 15. Face gear; 16. Servo motor; 2. Side arm; 21. Crossbeam bar; 22. Translation cavity; 23. Sliding bar; 24. Transmission block; 25. Mounting block; 26. First threaded rod; 27. Helical gear; 3. Buffer frame; 31. Vertical seat; 32. Lifting bar; 33. Light sensor; 34. Lifting cavity; 35. Spring; 4. Pressure adjustment assembly; 41. Base; 42. Adjustment cavity; 43. Second threaded rod; 44. Reinforcing rib; 45. Guide rail; 46. Lifting block; 5. Clamping component; 51. Movable clamp; 52. Fixed clamp; 53. Lower clamping cavity; 54. Gravity sensor; 55. Lower rubber strip; 56. Blocking block; 57. Upper clamping cavity; 58. Upper rubber strip. Detailed Implementation

[0034] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0035] Reference Figures 1-6 This is the first embodiment of the present invention, which provides a detector for drone flight angle trimming. This detector for drone flight angle trimming includes a central platform 1. Side arms 2 are installed in a ring at equal intervals on the periphery of the central platform 1, and the transmission end of the side arms 2 is connected to the driving end of the central platform 1. The central platform 1 drives the four side arms 2 to work synchronously. A buffer frame 3 is installed on the movable end of the side arms 2. A pressure adjustment component 4 is installed on the lifting end of the buffer frame 3. A clamping component 5 is provided at the end of the pressure adjustment component 4 away from the buffer frame 3. The pressure adjustment component 4 drives the movable clamp 51 to move toward the fixed clamp 52, clamping the drone arm between the movable clamp 51 and the fixed clamp 52 and locking it. By clamping the drone arm, the drone arm is prevented from sliding between the movable clamp 51 and the fixed clamp 52 when the drone is working. The drone arm is kept in a static state during the detection state, ensuring the balance of force on each arm and further improving the accuracy of the detection.

[0036] The clamping member 5 includes a movable clamping seat 51 fixed on the movable end of the pressure regulating component 4, and a fixed clamping seat 52 fixed on the upper pressure regulating component 4. The movable clamping seat 51 and the fixed clamping seat 52 are respectively provided with an upper clamping cavity 57 and a lower clamping cavity 53 on their opposite surfaces. A gravity sensor 54 is fixed inside the lower clamping cavity 53.

[0037] The pressure regulating component 4 controls the clamping component 5 to achieve stable and reliable locking and fixing of the UAV arm at the detection position, ensuring that the relative position of the arm and the detection mechanism remains unchanged during the detection process. This provides a high-precision benchmark for angle measurement and greatly improves the accuracy and repeatability of the detection data.

[0038] Furthermore, the central platform 1 synchronously adjusts the displacement of the four clamping components 5, which not only adapts to the clamping of different drone arms but also ensures that when adapting to drones of different models and sizes, the four sliding supports can always perform synchronous and equidistant radial movement with the detection center as the origin. This allows the center of the drone to be automatically and accurately aligned with the center of the detector, fundamentally eliminating the drone's own tilting stress problem caused by asymmetrical support points. This provides a neutral and impartial benchmark platform for angle balancing detection, improving detection accuracy and reliability while greatly enhancing the applicability and ease of use of the equipment.

[0039] The side arm 2 includes a crossbeam 21. A translation cavity 22 is provided at one end of the crossbeam 21 near the center platform 1. An installation block 25 is slidably provided inside the translation cavity 22. A transmission block 24 is welded to the top of the installation block 25.

[0040] Both sides of the translation cavity 22 are fixed with slide bars 23, and the transmission block 24 is provided with a limiting slide for the slide bars 23 to pass through. The transmission block 24 is threaded with a first threaded rod 26 through a threaded hole, and one end of the first threaded rod 26 is rotatably installed inside the translation cavity 22.

[0041] The central platform 1 includes a circular compartment 11. A circular plate 12 is fixed to the top of the circular compartment 11. A rotating cavity 13 is opened at the center of the circular plate 12. The other end of the first threaded rod 26 is located inside the rotating cavity 13. A face gear 15 is rotatably installed inside the rotating cavity 13. A helical gear 27 that meshes with the face gear 15 is sleeved on one end of the first threaded rod 26 located inside the rotating cavity 13.

[0042] A servo motor 16 is installed inside the cylindrical chamber 11, and the output shaft of the servo motor 16 is located inside the rotating cavity 13. A rotating ring 14 is installed on the output shaft of the servo motor 16, and a face gear 15 is fixed on the top surface of the rotating ring 14. The servo motor 16 drives the rotating ring 14 to drive the face gear 15 to rotate. Under the meshing transmission action of the face gear 15 and the helical gear 27, the servo motor 16 synchronously drives the four first threaded rods 26 to rotate, causing the four clamping parts 5 to move towards the center or towards the outside at the same time, maintaining the consistency of the adjustment of the four clamping parts 5, thereby helping to ensure the consistency of the clamping position of the UAV arm, making the force more balanced, and improving the detection accuracy.

[0043] The buffer frame 3 includes a vertical seat 31 fixed to the top of the mounting block 25. A lifting cavity 34 is provided at the top of the vertical seat 31. A lifting bar 32 is longitudinally slidably installed inside the vertical seat 31. A light sensor 33 is fixed in the middle of the lifting cavity 34. A sliding hole for the light sensor 33 to pass through is provided in the middle of the lifting bar 32. A spring 35 is sleeved on the light sensor 33 and located on the upper surface of the lifting bar 32.

[0044] Limiting grooves are provided on both ends of the lifting bar 32, and a limiting guide bar is fixed inside the lifting cavity 34 for the limiting grooves to pass through.

[0045] The pressure regulating assembly 4 includes a base 41 fixed on the lifting bar 32. The top of the base 41 has an regulating cavity 42. A lifting block 46 is longitudinally slidably installed inside the regulating cavity 42. A movable clamp 51 is fixed on the lifting block 46. A reinforcing rib 44 is welded to one end face of the base 41 away from the movable clamp 51. The bottom of the reinforcing rib 44 is welded to the upper surface of the lifting bar 32.

[0046] The lifting block 46 is threaded with a second threaded rod 43 through a threaded hole. The bottom end of the second threaded rod 43 is rotatably mounted inside the adjusting cavity 42. A knob is fitted on the top end of the second threaded rod 43. A guide rail 45 is fixed inside the second threaded rod 43 on the side away from the movable clamp 51. The lifting block 46 has a groove for the guide rail 45 to pass through. The knob drives the second threaded rod 43 to rotate. Under the longitudinal thread transmission between the second threaded rod 43 and the threaded hole on the lifting block 46, the movable clamp 51 is driven to move vertically up and down. The distance between the movable clamp 51 and the fixed clamp 52 can be adjusted. It can be adapted to the size of the machine arm. It is not only convenient to adjust, but also effectively ensures the locking of the machine arm.

[0047] An upper rubber strip 58 is bonded to the inner wall of the upper clamping cavity 57. A blocking block 56 is fixed inside the fixed clamping seat 52 and above the gravity sensor 54. The blocking block 56 is used to protect the gravity sensor 54, prevent the machine arm from directly contacting and pressing down on the gravity sensor 54, and extend the service life of the gravity sensor 54. A lower rubber strip 55 is bonded to the end face of the blocking block 56 away from the gravity sensor 54. The arrangement of the lower rubber strip 55 and the upper rubber strip 58 improves the contact with the outer wall of the machine arm, increases the coefficient of friction, and ensures the firmness of the clamping. On the other hand, it protects the machine arm and prevents damage to it during clamping.

[0048] The working principle of this invention is as follows: the first threaded rod 26 is driven to rotate, and under the transverse thread transmission action between the threaded hole on the transmission block 24 and the first threaded rod 26, the transmission block 24 is driven to move laterally, which drives the mounting block 25 to slide laterally, thereby synchronously driving the clamping member 5 to adjust the horizontal displacement, which is used to adjust the distance between the middle platform 1 and the clamping member 5, and to adapt to the clamping and locking of the arm of different sized UAVs.

[0049] The rotating ring 14 driven by the servo motor 16 drives the face gear 15 to rotate. Under the meshing transmission of the face gear 15 and the helical gear 27, the four first threaded rods 26 are synchronously driven by the servo motor 16 to rotate, causing the four clamping parts 5 to move towards the center or towards the outside at the same time, maintaining the consistency of the adjustment of the four clamping parts 5.

[0050] The drone is placed in the center of the platform 1, and the four drone arms are placed inside the four clamping parts 5. The pressure adjustment component 4 drives the movable clamp 51 to move toward the fixed clamp 52, clamping the drone arms between the movable clamp 51 and the fixed clamp 52 and locking them in place.

[0051] After the four drone arms are locked, the drone is started. Since the four drone arms are locked by the clamping parts 5, the lifting bar 32 will move upward and compress the spring 35. Under the elastic action of the spring 35, the lifting bar 32 will be pressed down and reset. While the lifting bar 32 is moving vertically, the gravity sensor 54 will detect the force data and thus determine the overall center of gravity of the drone and quickly determine the flight angle of the drone.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A detector for flight angle trimming of unmanned aerial vehicles (UAVs), characterized in that: Includes a central platform (1), on which side arms (2) are installed in a ring at equal intervals around the periphery of the central platform (1), and the transmission end of the side arms (2) is connected to the driving end of the central platform (1). At the same time, the central platform (1) drives the four side arms (2) to work synchronously. A buffer frame (3) is installed on the movable end of the side arms (2), and a pressure regulating component (4) is installed on the lifting end of the buffer frame (3). A clamping component (5) is provided at the end of the pressure regulating component (4) away from the buffer frame (3). The clamping member (5) includes a movable clamp (51) fixed on the movable end of the pressure regulating component (4) and a fixed clamp (52) fixed on the upper pressure regulating component (4). The movable clamp (51) and the fixed clamp (52) are respectively provided with an upper clamping cavity (57) and a lower clamping cavity (53) on their opposite surfaces. A gravity sensor (54) is fixed inside the lower clamping cavity (53).

2. The detector for UAV flight angle trimming according to claim 1, characterized in that: The side arm (2) includes a crossbeam (21), and a translation cavity (22) is provided at one end of the crossbeam (21) near the center platform (1). An installation block (25) is slidably provided inside the translation cavity (22), and a transmission block (24) is welded to the top of the installation block (25).

3. A detector for UAV flight angle trimming according to claim 2, characterized in that: Both sides of the translation cavity (22) are fixed with slide bars (23), and the transmission block (24) is provided with a limiting slide for the slide bars (23) to pass through. The transmission block (24) is threaded with a first threaded rod (26) through a threaded hole.

4. A detector for UAV flight angle trimming according to claim 3, characterized in that: The central platform (1) includes a circular compartment (11), and a circular plate (12) is fixed at the top of the circular compartment (11). A rotating cavity (13) is opened at the center of the circular plate (12). A face gear (15) is rotatably installed inside the rotating cavity (13). One end of the first threaded rod (26) located inside the rotating cavity (13) is fitted with a helical gear (27) that meshes with the face gear (15).

5. A detector for UAV flight angle trimming according to claim 4, characterized in that: A servo motor (16) is installed inside the cylindrical chamber (11). A rotating ring (14) is installed on the output shaft of the servo motor (16), and a face gear (15) is fixed on the top surface of the rotating ring (14).

6. A detector for UAV flight angle trimming according to claim 5, characterized in that: The buffer frame (3) includes a vertical seat (31) fixed to the top of the mounting block (25). The top of the vertical seat (31) is provided with a lifting cavity (34). A lifting bar (32) is longitudinally slidably installed inside the vertical seat (31). A light sensor (33) is fixed in the middle of the lifting cavity (34). A sliding hole for the light sensor (33) to pass through is provided in the middle of the lifting bar (32). A spring (35) is sleeved on the light sensor (33) and located on the upper surface of the lifting bar (32).

7. A detector for UAV flight angle trimming according to claim 6, characterized in that: Limiting grooves are provided on both ends of the lifting bar (32), and a limiting guide bar is fixed inside the lifting cavity (34) for the limiting grooves to pass through.

8. A detector for UAV flight angle trimming according to claim 7, characterized in that: The pressure regulating assembly (4) includes a base (41) fixed on the lifting bar (32). The top of the base (41) is provided with an regulating cavity (42). A lifting block (46) is longitudinally slidably installed inside the regulating cavity (42), and a movable clamp (51) is fixed on the lifting block (46). A reinforcing rib (44) is welded to one end face of the base (41) away from the movable clamp (51), and the bottom of the reinforcing rib (44) is welded to the upper surface of the lifting bar (32).

9. A detector for UAV flight angle trimming according to claim 8, characterized in that: The lifting block (46) is threaded with a second threaded rod (43) through a threaded hole. The second threaded rod (43) is fixed with a guide rail (45) inside and on the side away from the movable clamp (51). The lifting block (46) is provided with a groove for the guide rail (45) to pass through.

10. A detector for flight angle trimming of an unmanned aerial vehicle (UAV) according to claim 9, characterized in that: An upper rubber strip (58) is bonded to the inner wall of the upper clamping cavity (57). A blocking block (56) is fixed inside the fixed clamp (52) and above the gravity sensor (54). A lower rubber strip (55) is bonded to the end face of the blocking block (56) away from the gravity sensor (54).

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