Performance detection device for unmanned aerial vehicle

Abstract

The utility model provides an unmanned aerial vehicle performance detection device, which comprises a bearing platform and a plurality of supporting rods fixed at the top of the bearing platform, the outer walls of all the supporting rods are in sliding fit with the same supporting plate, the top of the supporting plate is provided with an installation mechanism, and the opposite sides of the bearing platform and the supporting plate are provided with two groups of symmetrically arranged force increasing assemblies. The force increasing assembly comprises a first pipe, a second pipe and a pressure sensor, the first pipe is fixedly connected with the second pipe, the diameter of the first pipe is smaller than that of the second pipe, a second piston and a first piston are slidably matched in the first pipe and the second pipe respectively, and the second piston is fixedly connected with the supporting plate through a second connecting rod; the first piston and the second piston are arranged, the area of the first piston is larger than that of the second piston, and when the second piston is stressed, acting force is transmitted to the first piston through hydraulic oil, so that force amplification is achieved, the situation that when the pulling force of a propeller is small, a pressure sensor cannot accurately detect a numerical value is avoided, and the accuracy of a detection result is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, and in particular to a performance detection device for unmanned aerial vehicles. Background Art

[0002] UAV propeller tension detection is one of the important links in evaluating UAV performance. Through accurate testing and analysis, it can provide strong support for the design, manufacture and application of UAV.

[0003] After searching, the Chinese patent publication number CN217515393U discloses an unmanned aerial vehicle test bench, including a propeller and a drive motor, wherein the drive motor has an output shaft, and the propeller is fixedly connected to the output shaft of the drive motor; the unmanned aerial vehicle test bench includes a column, a tension testing device and a rotation-stopping assembly; the tension testing device is arranged at the top of the column, the tension testing device includes a tension sensor and a mounting seat, the mounting seat is movably mounted on the column along a first direction, the tension sensor is arranged between the column and the mounting seat, and the mounting seat is used to install the drive motor and the propeller; the rotation-stopping assembly is arranged between the mounting seat and the column to prevent the mounting seat from rotating relative to the column.

[0004] The above patent has the following deficiencies: it uses a tension sensor to directly detect the tension of the propeller, resulting in the detection force being the same as the tension of the propeller. Therefore, when the tension is small, the detection sensitivity is low, which can easily lead to an inaccurate detection structure.

[0005] Therefore, a UAV performance detection device is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present utility model hope to provide a UAV performance detection device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a UAV performance detection device includes a load-bearing platform and a plurality of support rods fixed to the top of the load-bearing platform, the outer walls of all the support rods are slidably matched with the same support plate, and a mounting mechanism is arranged on the top of the support plate. Two groups of symmetrically arranged force-enhancing components are arranged on the opposite sides of the load-bearing platform and the support plate, and the force-enhancing components include tube one, tube two and a pressure sensor, tube one is fixedly connected to tube two and the diameter of tube one is smaller than the diameter of tube two, piston two and piston one are slidably matched in tube one and tube two respectively, piston two is fixedly connected to the support plate through connecting rod two, one piston one is connected to the fixed end of the pressure sensor through a connecting rod one, and the other piston one is connected to the sensing end of the pressure sensor through a connecting rod one, the inner walls of tube one and tube two between piston one and piston two are filled with hydraulic oil, and tube two is fixed to the top of the load-bearing platform through a bracket.

[0008] In some embodiments, the mounting mechanism includes a drive motor and a connecting shaft.

[0009] In some embodiments, the driving motor is fixed to the top of the support plate by bolts, the connecting shaft is fixedly connected to the knob output shaft by a coupling, and a limiting ring is fixed to the outer wall of the connecting shaft.

[0010] In some embodiments, a mounting assembly is disposed on the top of the connecting shaft.

[0011] In some embodiments, the mounting assembly includes a knob and anti-slip grooves formed on an outer wall of the knob, and the knob is connected to the outer wall of the top of the connecting shaft via threads.

[0012] In some embodiments, the mounting assembly includes two symmetrically arranged limit sliders, a connecting column, and an adjusting handle.

[0013] In some embodiments, a sliding groove is provided on the inner wall of the connecting shaft, and the limiting slider is slidably engaged with the inner wall of the sliding groove.

[0014] In some embodiments, the top of the limit slider is fixedly connected to the adjustment handle via a connecting column, the connecting column is slidably fitted to the inner wall of the connecting shaft, and the same spring is buckled on opposite sides of the two limit sliders.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. A UAV performance detection device is provided, by setting piston 1 and piston 2. Since the area of ​​piston 1 is larger than that of piston 2, when piston 2 is subjected to force, the force is transmitted to piston 1 through hydraulic oil, thereby achieving force amplification and avoiding the situation that the pressure sensor cannot accurately detect the value when the propeller pulling force is small, thereby improving the accuracy of the detection result.

[0017] 2. A UAV performance detection device, which provides a knob and a limit ring, and utilizes the cooperation of the knob and the limit ring to enable the propeller to be reliably fixed to the outer wall of the connecting shaft, thereby avoiding inaccurate detection results caused by a loose connection between the propeller and the connecting shaft, and further improving the accuracy of the detection results.

[0018] 3. A UAV performance testing device, which sets a chain of symmetrically arranged limit sliders, and uses the limit sliders to limit the propeller, so as to achieve the connection and fixation between the propeller and the connecting shaft, thereby ensuring the reliability of the test results, and the limit slider does not need to be removed from the connecting shaft, thereby avoiding the loss of parts.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the main structural diagram of the utility model;

[0022] Figure 2 This is a cross-sectional view of the force-enhancing component structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the local structure of the utility model Figure 1 ;

[0024] Figure 4 It is a schematic diagram of the local structure of the utility model Figure 2 ;

[0025] Figure 5 It is an enlarged schematic diagram of the structure at point A of the present utility model.

[0026] Reference numerals:

[0027] 1. Load-bearing platform; 2. Support rod; 3. Support plate; 4. Mounting assembly; 5. Drive motor; 6. Force-enhancing assembly; 7. Tube 1; 8. Tube 2; 9. Bracket; 10. Pressure sensor; 11. Connecting rod 1; 12. Piston 1; 13. Piston 2; 14. Connecting rod 2; 15. Knob; 16. Connecting shaft; 17. Limiting ring; 18. Coupling; 19. Limiting slider; 20. Connecting column; 21. Adjusting handle; 22. Slide; 23. Spring. DETAILED DESCRIPTION

[0028] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0031] Embodiment 1:

[0032] like Figure 1 , 2 As shown, a UAV performance detection device includes a carrying platform 1 and a plurality of support rods 2 fixed on the top of the carrying platform 1.

[0033] The outer walls of all the support rods 2 are slidably matched with the same support plate 3, and a mounting mechanism is provided on the top of the support plate 3. Two groups of symmetrically arranged force-enhancing components 6 are provided on the opposite sides of the support platform 1 and the support plate 3. The force-enhancing component 6 includes a tube 1 7, a tube 2 8 and a pressure sensor 10. The tube 1 7 is fixedly connected to the tube 2 8 and the diameter of the tube 1 7 is smaller than the diameter of the tube 2 8. Piston 2 13 and piston 12 are slidably matched in the tube 1 7 and the tube 2 8 respectively. The piston 2 13 is fixedly connected to the support plate 3 through a connecting rod 2 14. One of the pistons 12 is connected to the fixed end of the pressure sensor 10 through a connecting rod 11, and the other piston 12 is connected to the sensing end of the pressure sensor 10 through a connecting rod 11. The inner walls of the tube 1 7 and the tube 2 8 between the piston 12 and the piston 2 13 are filled with hydraulic oil, and the tube 2 8 is fixed to the top of the support platform 1 through a bracket 9.

[0034] The propeller to be tested is installed on the top of the support plate 3 using the mounting mechanism. During the propeller tension test, the piston 13 is subjected to force and transmits the force to the piston 12 through the hydraulic oil. Since the diameter of the tube 17 is smaller than the diameter of the tube 28, the area of ​​the piston 13 is smaller than the area of ​​the piston 12. Therefore, the force applied to the piston 12 is greater than the force applied to the piston 13, thereby achieving force amplification and making the detection result of the pressure sensor 10 more accurate.

[0035] The device is provided with piston 12 and piston 2 13. Since the area of ​​piston 12 is larger than that of piston 2 13, when piston 2 13 is subjected to force, the force is transmitted to piston 12 through hydraulic oil, thereby achieving force amplification and avoiding the situation where the pressure sensor 10 is unable to accurately detect the value when the propeller pulling force is small, thereby improving the accuracy of the detection result.

[0036] Embodiment 2:

[0037] A drone performance detection device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 1 , 3 As shown:

[0038] The mounting mechanism includes a driving motor 5 and a connecting shaft 16. The driving motor 5 is fixed to the top of the support plate 3 by bolts. The connecting shaft 16 is fixedly connected to the output shaft of the knob 15 by a coupling 18. A limiting ring 17 is fixed to the outer wall of the connecting shaft 16, and a mounting assembly 4 is arranged on the top of the connecting shaft 16.

[0039] The mounting assembly 4 includes a knob 15 and anti-slip grooves formed on the outer wall of the knob 15 . The knob 15 is connected to the outer wall of the top of the connecting shaft 16 via threads.

[0040] Rotate the knob 15 to remove it from the connecting shaft 16, then put the propeller on the outer wall of the connecting shaft 16, and then screw the knob 15 and the connecting shaft 16 together, and maintain a certain pressure on the propeller. After the installation is completed, start the drive motor 5 to drive the connecting shaft 16 to drive the propeller to rotate. During the rotation of the propeller, the support plate 3 is subjected to tension, which is transmitted to the piston 2 13 through the connecting rod 2 14. The piston 2 13 then transmits the force to the piston 1 12 through the hydraulic oil and realizes force amplification. Finally, the connecting rod 11 is used to transmit the force to the pressure sensor 10 for detection.

[0041] The device is provided with a knob 15 and a limit ring 17, and the cooperation of the knob 15 and the limit ring 17 enables the propeller to be reliably fixed to the outer wall of the connecting shaft 16, thereby avoiding inaccurate detection results caused by a loose connection between the propeller and the connecting shaft 16, and further improving the accuracy of the detection results.

[0042] In this embodiment: when the device is in use, first, the knob 15 is rotated and removed from the connecting shaft 16, and then the propeller is sleeved on the outer wall of the connecting shaft 16 and fit with the limit ring 17, and then the knob 15 and the connecting shaft 16 are rotated and a certain pressure is maintained on the propeller with the cooperation of the limit ring 17, so that it can be reliably fixed on the outer wall of the connecting shaft 16. After the installation is completed, the force-enhancing component 6 is started to drive the connecting shaft 16 to drive the propeller to rotate. In this process, the support plate 3 is subjected to tension, and the force is transmitted to the piston 2 13 by the connecting rod 2 14, and the piston 2 13 is transmitted to the piston 1 12 through the hydraulic oil. Since the diameter of the tube 1 7 is smaller than the diameter of the tube 2 8, the area of ​​the piston 2 13 is smaller than the area of ​​the piston 12, so that the force applied to the piston 12 is greater than the force applied to the piston 2 13, and the piston 12 transmits the amplified force to the pressure sensor 10 through the connecting rod 1 11, thereby improving the accuracy of the detection result of the pressure sensor 10, and thus completing the detection process of one propeller, and repeating the above steps until all propellers are detected.

[0043] Embodiment 3:

[0044] A drone performance detection device, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 1 , 4 、5 as shown:

[0045] The mounting mechanism includes a driving motor 5 and a connecting shaft 16. The driving motor 5 is fixed to the top of the support plate 3 by bolts. The connecting shaft 16 is fixedly connected to the output shaft of the knob 15 by a coupling 18. A limiting ring 17 is fixed to the outer wall of the connecting shaft 16, and a mounting assembly 4 is arranged on the top of the connecting shaft 16.

[0046] The installation assembly 4 includes two symmetrically arranged limit sliders 19 , a connecting column 20 and an adjusting handle 21 . A sliding groove 22 is provided on the inner wall of the connecting shaft 16 , and the limit slider 19 is slidably matched with the inner wall of the sliding groove 22 .

[0047] The top of the limit slider 19 is fixedly connected to the adjustment handle 21 through a connecting column 20 , the connecting column 20 is slidably matched with the inner wall of the connecting shaft 16 , and the same spring 23 is buckled on the opposite side of the two limit sliders 19 .

[0048] First, the propeller is sleeved on the top of the connecting shaft 16, and then the two adjusting handles 21 are pushed toward the middle at the same time, and the connecting column 20 is used to drive the two limiting sliders 19 to move into the slide groove 22 at the same time. When the limiting slider 19 is completely located in the slide groove 22, the spring 23 is compressed by the force. At this time, the propeller is not restricted by the limiting slider 19 and can be pushed downward along the outer wall of the connecting shaft 16 until it fits with the limiting ring 17. Then the adjusting handle 21 is released, and the two limiting sliders 19 are pushed outward under the elastic action of the spring 23, thereby realizing the limitation of the propeller.

[0049] The device sets a chain of symmetrically arranged limit sliders 19, which can limit the propeller and achieve the connection and fixation between the propeller and the connecting shaft 16, thereby ensuring the reliability of the detection result. The limit slider 19 does not need to be removed from the connecting shaft 16, thereby avoiding the loss of parts.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A drone performance testing device, comprising a carrying platform (1) and a plurality of support rods (2) fixed on the top of the carrying platform (1), characterized in that: The outer walls of all the support rods (2) are slidably matched with the same support plate (3), and a mounting mechanism is arranged on the top of the support plate (3). Two groups of symmetrically arranged force-enhancing components (6) are arranged on the opposite sides of the support platform (1) and the support plate (3). The force-enhancing components (6) include a first tube (7), a second tube (8) and a pressure sensor (10). The first tube (7) is fixedly connected to the second tube (8) and the diameter of the first tube (7) is smaller than the diameter of the second tube (8). The first tube (7) and the second tube (8) are slidably matched with a second piston (13) and a second piston (14) respectively. 12), piston 1 (13) is fixedly connected to the support plate (3) through connecting rod 2 (14), one piston 1 (12) is connected to the fixed end of the pressure sensor (10) through connecting rod 1 (11), and the other piston 1 (12) is connected to the sensing end of the pressure sensor (10) through connecting rod 1 (11), the inner wall of the pipe 1 (7) and the pipe 2 (8) located between the piston 1 (12) and the piston 2 (13) is filled with hydraulic oil, and the pipe 2 (8) is fixed to the top of the support platform (1) through a bracket (9).

2. The UAV performance detection device according to claim 1, characterized in that: The mounting mechanism comprises a driving motor (5) and a connecting shaft (16).

3. The UAV performance detection device according to claim 2, characterized in that: The driving motor (5) is fixed to the top of the support plate (3) by means of bolts, the connecting shaft (16) is fixedly connected to the output shaft of the knob (15) by means of a coupling (18), and a limiting ring (17) is fixed to the outer wall of the connecting shaft (16).

4. The UAV performance detection device according to claim 3, characterized in that: A mounting assembly (4) is arranged on the top of the connecting shaft (16).

5. The UAV performance detection device according to claim 4, characterized in that: The mounting assembly (4) comprises a knob (15) and anti-slip grooves formed on the outer wall of the knob (15); the knob (15) is connected to the outer wall of the top of the connecting shaft (16) via threads.

6. The UAV performance detection device according to claim 4, characterized in that: The installation assembly (4) comprises two symmetrically arranged limiting slide blocks (19), a connecting column (20) and an adjusting handle (21).

7. The UAV performance detection device according to claim 6, characterized in that: The inner wall of the connecting shaft (16) is provided with a sliding groove (22), and the limiting sliding block (19) is slidably matched with the inner wall of the sliding groove (22).

8. The UAV performance detection device according to claim 7, characterized in that: The top of the limit slider (19) is fixedly connected to the adjustment handle (21) via a connecting column (20), the connecting column (20) is slidably matched with the inner wall of the connecting shaft (16), and the same spring (23) is buckled on the opposite side of the two limit sliders (19).

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