Unmanned aerial vehicle gravity center detection device

Abstract

The utility model provides an unmanned aerial vehicle gravity center detection device, and belongs to the technical field of unmanned aerial vehicle gravity center detection. The supporting sleeve is arranged at a position above the base; the spring is embedded and fixed at the inner bottom of the supporting sleeve; the supporting plate is fixed at the top end of the spring; the vertical scale marks are arranged on the outer side wall of the supporting plate; the guide assembly is arranged at the top of the base; the guide assembly comprises a guide table fixed to the center of the top of the base. The gravity center detection assembly is arranged on the base; when the unmanned aerial vehicle is in a balanced state twice, the intersection point of the straight line position where the rotating roller is located on the horizontal scale line is the gravity center of the unmanned aerial vehicle, gravity center detection does not need a sensor, the structure is simplified, meanwhile, electricity does not need to be used, field modification is facilitated, and the sudden gravity center detection requirement can be met conveniently; the practicability is high.

Description

Technical Field

[0001] This utility model belongs to the field of UAV center of gravity detection technology, specifically relating to a UAV center of gravity detection device. Background Technology

[0002] A drone is an unmanned aircraft controlled by radio remote control equipment and its own program control device. The center of gravity of an aircraft is the relative position of the center of gravity of the entire aircraft and the wings. There is a neutral center of gravity, the foremost center of gravity, and the rearmost permissible center of gravity. The position of the center of gravity affects the stability and maneuverability of the aircraft.

[0003] To improve the flight time of drones, people often modify them by adding battery packs, replacing motors, and so on. However, these modifications can disrupt the drone's center of gravity, leading to decreased control sensitivity and, in severe cases, preventing takeoff. In such cases, a drone center of gravity detection device is needed to detect the drone's center of gravity and adjust the positions of the modified components.

[0004] However, existing drone detection devices use a lot of gravity sensors to confirm the center of gravity, which makes the structure relatively complex. Furthermore, when modifying them in the field, an additional power supply is needed to power the sensors, resulting in high equipment requirements and greatly reducing their practicality.

[0005] Therefore, a UAV center of gravity detection device is proposed. Summary of the Invention

[0006] This invention provides a device for detecting the center of gravity of an unmanned aerial vehicle (UAV), the purpose of which is to solve the problems mentioned above.

[0007] This utility model provides a drone center of gravity detection device, including a base; a support sleeve disposed above the base; a spring embedded and fixed inside the bottom of the support sleeve; a support plate fixed to the top of the spring; vertical scale lines disposed on the outer wall of the support plate; a guide assembly disposed on the top of the base; wherein the guide assembly includes a guide platform fixed at the center of the top of the base; a center of gravity detection assembly disposed on the base; wherein the center of gravity detection assembly includes a ball screw rotating inside the base; a limiting sleeve fixed to a nut seat on the ball screw by screws; a limiting plate embedded in the top of the limiting sleeve; a bracket fixed to the top of the limiting plate by bolts; and a rotating roller rotating on the inner wall of the bracket.

[0008] Furthermore, the guide assembly also includes a groove formed on the top of the guide platform; and a horizontal scale line provided on the outer wall of the guide platform;

[0009] By adopting the above technical solution, the groove can provide space for the horizontal movement of the limiting sleeve, thereby avoiding interference and obstruction between the limiting sleeve and the guide table during the movement.

[0010] Furthermore, a connecting block is fixedly installed on the outer wall of the support sleeve, and a connecting screw hole is opened at the top of the base near the position directly below the connecting block;

[0011] By adopting the above technical solution, the installation position of the support sleeve on the base can be adjusted according to the length and width of the drone body using multiple connecting screw holes on the top of the base, thereby adjusting the distance between the two support sleeves and facilitating the support of drones of different sizes.

[0012] Furthermore, the connecting block and the base are fixedly connected by a screw, and the screw and the connecting screw hole are connected by a threaded engagement.

[0013] By adopting the above technical solution, the connection and fixation between the connecting block and the base are achieved by using screws, thereby realizing the installation of the support sleeve.

[0014] Furthermore, the cross-section of the guide platform is a right trapezoid, and the top of the guide platform and the bottom of the support are on the same plane;

[0015] By adopting the above technical solution and utilizing the inclined surface at the top of the guide platform, the position of the support can gradually rise or fall under the guidance of the inclined surface when the support moves at the top of the guide platform, thereby adjusting the height of the inner roller of the support and ensuring that the roller lifts the drone body. The lever principle is used to determine whether the drone is tilted.

[0016] Furthermore, a cavity is provided at the top of the base near the outer side of the ball screw, and the cavity is connected to the groove;

[0017] By adopting the above technical solution, the ball screw can be guaranteed to rotate smoothly and the limit sleeve can be guaranteed to move within the groove.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention, through the cooperation of a guide component and a center of gravity detection component, can adjust the height and position of the rotating roller in real time. Utilizing the contact surface between the drone body and the rotating roller as a lever rotation point, the drone body can tilt upwards or downwards on both sides under the lever principle and gravity. The drone's balance is detected by judging the difference between the vertical scale lines on the two support plates supporting the drone body. The intersection of the straight lines where the rotating roller is located on the horizontal scale line when the drone is in a balanced state twice is the drone's center of gravity. Center of gravity detection does not require sensors, simplifying the structure and eliminating the need for electricity. This facilitates modification in the field and allows for handling sudden center of gravity detection needs, making it highly practical.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] 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:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is an exploded view of the support sleeve according to an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of the center of gravity detection component structure according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the guide component structure according to an embodiment of the present utility model;

[0026] Figure 5 This is an embodiment of the present utility model. Figure 1 Enlarged view of point A in the image;

[0027] Reference numerals in the attached drawings: 1. Base; 2. Support sleeve; 3. Spring; 4. Support plate; 5. Vertical scale line; 6. Guide assembly; 61. Guide platform; 62. Groove; 63. Horizontal scale line; 7. Center of gravity detection assembly; 71. Ball screw; 72. Limit sleeve; 73. Limit plate; 74. Bracket; 75. Rotary roller; 8. Connecting block; 9. Connecting screw hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0029] Reference Figure 1-5This utility model embodiment proposes a UAV center of gravity detection device, including a base 1, a support sleeve 2 at the top of the base 1, a spring 3 embedded and fixed at the bottom of the support sleeve 2, a support plate 4 fixedly fixed at the top of the spring 3, a vertical scale line 5 on the outer wall of the support plate 4, the vertical scale line 5 being perpendicular to the horizontal plane, a guide platform 61 of the guide assembly 6 fixedly fixed at the center of the top of the base 1, a groove 62 opened at the top of the guide platform 61, and a horizontal scale line 63 on the outer wall of the guide platform 61, the horizontal scale line 63 being parallel to the horizontal plane, a ball screw 71 of the center of gravity detection assembly 7 rotatably connected inside the base 1, one end of the ball screw 71 located on the outer side of the base 1, a cavity opened at the top of the base 1 near the outer side of the ball screw 71, the cavity communicating with the groove 62, the ball screw 71 A handwheel is provided at one end, and a nut seat on the ball screw 71 is fixedly connected to a limiting sleeve 72 by screws. The outer side wall of the limiting sleeve 72 and the inner side wall of the groove 62 match and fit together. The groove 62 can limit the limiting sleeve 72, thereby ensuring the stability of the linear movement of the limiting sleeve 72 within the groove 62. A limiting plate 73 is embedded in the top of the limiting sleeve 72, and a bracket 74 is fixedly connected to the top of the limiting plate 73 by bolts. The cross-section of the guide table 61 is a right trapezoid, and the top of the guide table 61 and the bottom of the bracket 74 are on the same plane. A rotating roller 75 is rotatably connected to the inner side wall of the bracket 74. A connecting block 8 is fixedly provided on the outer side wall of the support sleeve 2. A connecting screw hole 9 is opened at the top of the base 1 near the position directly below the connecting block 8. The connecting block 8 and the base 1 are fixedly connected by a screw, and the screw and the connecting screw hole 9 are connected by threaded engagement.

[0030] The specific implementation method is as follows: In use, the distance between the two support sleeves 2 on the base 1 is adjusted according to the length of the drone body. While ensuring that the two support plates 4 support the drone body, the screw passes through the connecting block 8 and is screwed into the connecting screw hole 9 to fix the position of the support sleeve 2. At this time, the drone body is placed on the two support plates 4. After the support plates 4 are pressed, they move downward inside the support sleeve 2. The spring 3 is compressed. When the center of gravity is detected, the ball screw 71 is rotated, and the limiting sleeve 72 moves linearly on the ball screw 71. The limiting plate 73 embedded at the top of the limiting sleeve 72 moves linearly at the same time. Since the limiting plate 73 and the limiting sleeve 72 are not fixedly connected, when the bracket 74 at the top of the limiting plate 73 moves along the inclined surface at the top of the guide table 61, the limiting plate 73 rises and falls vertically inside the limiting sleeve 72. At this time, the position of the bracket 74 gradually rises or falls under the guidance of the inclined surface. As the drone descends, the rotating roller 75 changes height during its movement. When the roller 75 lifts the drone body, due to the uncertainty of the roller 75's position, the drone body rotates around the contact surface with the roller 75 as a lever. The two ends of the drone body tilt upwards or downwards under the action of gravity. At this time, the pressure on the support plate 4 changes, and the spring 3's rebound force makes a corresponding change. Observe the difference between the two vertical scale lines 5. When the difference between the two vertical scale lines 5 is the same, it means that the two ends of the drone body are in a balanced state under the support of the roller 75. Record the position of the roller 75 on the horizontal scale line 63. Then, after removing the drone, rotate it 90 degrees and place it on the two support plates 4 again. Measure it again using the above method. The intersection of the two measurement results is the drone's center of gravity. Subsequent counterweight operations are performed based on the position of the center of gravity.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A UAV center of gravity detection device, characterized in that: it comprises a base (1); a support sleeve (2) arranged at a position above the base (1); a spring (3) embedded and fixed to the inside bottom of the support sleeve (2); a support plate (4) fixed to the top end of the spring (3); vertical scale lines (5) arranged on the outer side wall of the support plate (4); a guide assembly (6) arranged on the top of the base (1); wherein the guide assembly (6) comprises a guide table (61) fixed to the top center position of the base (1); a center of gravity detection assembly (7) arranged on the base (1); wherein the center of gravity detection assembly (7) comprises a ball screw (71) rotating in the inside of the base (1); a limiting sleeve (72) fixed to the nut seat of the ball screw (71) by a screw; a limiting plate (73) embedded on the top of the limiting sleeve (72); a bracket (74) fixed to the top of the limiting plate (73) by a bolt; a rotating roller (75) rotating on the inside wall of the bracket (74). 2.The device of claim 1, wherein: The guide assembly (6) further comprises a groove (62) opened on the top of the guide table (61); horizontal scale lines (63) arranged on the outer side wall of the guide table (61). 3.The device of claim 1, wherein: A connecting block (8) is fixedly arranged on the outer side wall of the support sleeve (2), and a connecting screw hole (9) is opened on the top of the base (1) near the position directly below the connecting block (8).

4. The device for detecting the gravity center of the UAV according to claim 3, characterized in that: The connecting block (8) and the base (1) are fixedly connected through a screw rod, and the screw rod and the connecting screw hole (9) are threadedly connected.

5. The device for detecting the gravity center of the UAV according to claim 2, characterized in that: The cross section of the guide table (61) is a right trapezoid, and the top of the guide table (61) and the bottom of the bracket (74) are on the same plane.

6. The device for detecting the gravity center of the UAV according to claim 1, wherein: A cavity is opened on the top of the base (1) near the outer side of the ball screw (71), and the cavity and the groove (62) are connected.

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