An unmanned aerial vehicle fuel tank testing tool

Abstract

The utility model belongs to the composite unmanned aerial vehicle machine body test technical field especially relates to a kind of unmanned aerial vehicle tank test tool, when using, remove fixed assembly, the recess of unmanned aerial vehicle tank is positioned and fixed by positioning assembly, falls on inner wall support assembly and is attached with inner wall support assembly, one end of unmanned aerial vehicle tank is attached with second outer wall support assembly, the opposite sides of unmanned aerial vehicle tank are attached with two first outer wall support assembly respectively, connection fixed assembly, limit and fix to unmanned aerial vehicle tank, complete the installation of unmanned aerial vehicle tank, inject compressed air into unmanned aerial vehicle tank to set pressure and maintain set time. By setting first outer wall support assembly, second outer wall support assembly and inner wall support assembly, the recess of unmanned aerial vehicle tank and outer lateral wall are supported, the deformation of tank in pressure injection process can be effectively limited, avoid irreversible plastic deformation or instability damage due to overpressure in local tank body.

Description

Technical Field

[0001] This utility model belongs to the field of composite material unmanned aerial vehicle (UAV) airframe testing technology, and particularly relates to a UAV fuel tank testing fixture. Background Technology

[0002] After the composite fuel tank is assembled, it must undergo rigorous inspection, including stiffness assessment, as well as airtightness testing under high and low temperature environments, oil tightness testing at room temperature, and reliability testing during high and low temperature transitions. The core objective is to ensure that the deformation and sealing performance of the composite material under different operating conditions fully meet the stringent flight requirements.

[0003] However, existing supporting testing facilities are relatively limited in function. They can usually only fill the tank with a fixed amount of compressed air to perform basic sealing tests. More seriously, this simple and crude pressurization process poses significant safety hazards. Due to the lack of restrictions on tank deformation during pressure application, it is very easy for the tank to suffer irreversible plastic deformation or instability damage due to overpressure, ultimately causing the entire valuable tank to be scrapped, resulting in huge quality and economic losses.

[0004] To address this, a testing fixture for UAV fuel tanks is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a testing fixture for drone fuel tanks to solve the above-mentioned problems.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] A testing fixture for a drone fuel tank includes: a bracket, a support platform detachably connected to the top of the bracket, two sets of first outer wall support components and one set of second outer wall support components disposed on the top surface of the support platform, both sets of first outer wall support components and the second outer wall support components being adapted to the outer wall of the drone fuel tank, the two sets of first outer wall support components being located on opposite sides of the support platform and facing each other, the second outer wall support component being located on the side of the support platform adjacent to the first outer wall support components, an inner wall support component being disposed between the two sets of first outer wall support components, the inner wall support component being adapted to the recess of the drone fuel tank, a fixing component detachably connected between the top ends of the two sets of first outer wall support components, the fixing component being adapted to the outer side of the drone fuel tank, and a positioning component being disposed between the first outer wall support components and the inner wall support components, the positioning component being fixed to the top surface of the support platform.

[0008] In the UAV fuel tank test fixture of this utility model, the first outer wall support assembly includes a side frame, which is vertically arranged. Multiple first side plates and a second side plate are detachably connected to the side of each side frame that is close to each other. Both the first side plate and the second side plate are vertically arranged. Both the first side plate and the second side plate are adapted to the outer wall of the UAV fuel tank. The multiple first side plates are arranged sequentially at intervals along the direction away from the second outer wall support assembly. The second side plate is located at the end of the side frame away from the second outer wall support assembly.

[0009] In the UAV fuel tank test fixture of this utility model, the second outer wall support assembly includes two first uprights. Both first uprights are fixed to the top surface of the support platform and are symmetrically arranged. The two first uprights are symmetrically arranged and are respectively close to the two side frames. The top of the first uprights is fixed to a first outer support plate, which is adapted to the outer wall of the UAV fuel tank.

[0010] In the UAV fuel tank test fixture of this utility model, the inner wall support assembly includes an intermediate frame fixed to the top surface of the support platform. The intermediate frame is located in the middle of the two side frames. A third inner support plate is fixed to the top of the intermediate frame by a short rod. The third inner support plate is located on the side of the intermediate frame close to the first outer support plate. A first inner support plate and a second inner support plate are fixed to opposite sides of the intermediate frame. The first inner support plate and the second inner support plate on the same side are arranged vertically. The third inner support plate, the first inner support plate, and the second inner support plate are all adapted to the recess of the UAV fuel tank. The two first inner support plates and the two second inner support plates are respectively close to the two side frames.

[0011] In the UAV fuel tank test fixture of this utility model, the fixing component includes a top frame, which is detachably connected to the top of the two side frames. A first connecting member is fixedly connected to the middle of the top frame. A second outer support plate is fixedly connected to the end of the first connecting member away from the top frame. The second outer support plate is correspondingly arranged with the third inner support plate. The second outer support plate is adapted to the outer side wall of the UAV fuel tank.

[0012] In the UAV fuel tank test fixture of this utility model, the positioning component includes a first positioning support and a second positioning support fixed to the top surface of the support platform. The first positioning support and the second positioning support are located between the side frame and the intermediate frame. The second positioning support is correspondingly arranged to the bottom wall of the UAV fuel tank, and the first positioning support is correspondingly arranged to the outer side wall of the UAV fuel tank. The positioning pins on the first positioning support and the second positioning support are correspondingly arranged and adapted to the multiple positioning holes of the UAV fuel tank.

[0013] In the UAV fuel tank test fixture of this utility model, two vertically arranged second uprights are fixedly connected to the top surface of the support platform, and a horizontal plate is fixedly connected between the top ends of the two second uprights. The horizontal plate is located between the first upright and the intermediate frame.

[0014] In the UAV fuel tank test fixture of this utility model, the support is equipped with legs at the four corners of the bottom end, and the height of the legs can be adjusted.

[0015] Compared with the prior art, the present invention has the following advantages and technical effects:

[0016] In use, the device of this utility model first removes the fixing component, inserts the drone fuel tank from the side away from the second outer wall support component, and positions and fixes the drone fuel tank using the positioning component. The recessed part of the drone fuel tank rests on and fits against the inner wall support component, one end of the drone fuel tank fits against the second outer wall support component, and the opposite sides of the drone fuel tank fit against the two first outer wall support components respectively. The fixing component is then connected to limit and fix the drone fuel tank, completing the installation of the drone fuel tank. Compressed air is injected into the drone fuel tank to the set pressure and maintained for the set time. In addition, the support platform can be removed, and the drone fuel tank can be sent to a high temperature or low temperature environment for testing.

[0017] In this invention, by setting a first outer wall support component, a second outer wall support component, and an inner wall support component, the recessed area and outer wall of the drone fuel tank are supported, which can effectively limit the deformation of the fuel tank during the pressure injection process and avoid irreversible plastic deformation or instability damage to the tank body due to local overpressure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first-person view of the present invention;

[0020] Figure 2 This is a second perspective view of the present invention;

[0021] Figure 3 This is the front view of the present invention;

[0022] Figure 4 This is the left view of the present invention;

[0023] Figure 5This is a schematic diagram of the structure of the UAV fuel tank in this utility model;

[0024] The components are as follows: 1. Bracket; 2. Leg; 3. Support platform; 4. Reinforcing member; 5. Side frame; 6. Top frame; 7. First connecting member; 8. First side plate; 9. Intermediate frame; 10. First inner support plate; 11. Second inner support plate; 12. First outer support plate; 13. First upright; 14. Second outer support plate; 15. Third inner support plate; 16. Positioning support; 17. Second positioning support; 20. Short rod; 21. Fixing member; 22. Second side plate; 23. Second upright; 24. Horizontal plate. Detailed Implementation

[0025] 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.

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] like Figure 5 The image shows the fuel tank of the drone to be tested, for reference. Figures 1 to 4 This embodiment discloses a test fixture for a drone fuel tank, including: a bracket 1, a support platform 3 detachably connected to the top of the bracket 1, two sets of first outer wall support components and one set of second outer wall support components arranged on the top surface of the support platform 3, both sets of first outer wall support components and the second outer wall support components being adapted to the outer wall of the drone fuel tank, the two sets of first outer wall support components being located on opposite sides of the support platform 3 and facing each other, the second outer wall support component being located on the side of the support platform 3 adjacent to the first outer wall support components, an inner wall support component being arranged between the two first outer wall support components, the inner wall support component being adapted to the recess of the drone fuel tank, a fixing component being detachably connected between the top ends of the two sets of first outer wall support components, the fixing component being adapted to the outer side of the drone fuel tank, a positioning component being arranged between the first outer wall support components and the inner wall support components, the positioning component being fixed to the top surface of the support platform 3.

[0029] When using the device of this utility model, firstly, the fixing component is removed, and the drone fuel tank is inserted from the side away from the second outer wall support component. The drone fuel tank is positioned and fixed by the positioning component. The recessed part of the drone fuel tank rests on the inner wall support component and fits against the inner wall support component. One end of the drone fuel tank fits against the second outer wall support component, and the opposite sides of the drone fuel tank fit against the two first outer wall support components respectively. The fixing component is connected to limit and fix the drone fuel tank, thus completing the installation of the drone fuel tank. Compressed air is injected into the drone fuel tank to the set pressure and maintained for the set time. In addition, the support platform 3 can be removed, and the drone fuel tank can be sent to a high temperature or low temperature environment for testing.

[0030] In one alternative, two parallel and symmetrically arranged reinforcing members 4 are fixedly connected to the bottom of the support platform 3. The reinforcing members 4 are square tubes. On the one hand, the reinforcing members 4 can be used to strengthen the structural strength of the support platform 3. On the other hand, when transferring, the forklift's fork arm can extend into the reinforcing members 4 to transfer the support platform 3.

[0031] In one alternative embodiment, the first outer wall support assembly includes a side frame 5, which is vertically arranged. Both sides of the side frame 5 that are close to each other are detachably connected to a plurality of first side plates 8 and a second side plate 22. Both the first side plate 8 and the second side plate 22 are vertically arranged and are adapted to the outer wall of the UAV fuel tank. The plurality of first side plates 8 are arranged sequentially at intervals along the direction away from the second outer wall support assembly, and the second side plate 22 is located at the end of the side frame 5 away from the second outer wall support assembly.

[0032] In one alternative, the side frame 5 is connected to the first side plate 8 and the second side plate 22 by pins, bolts or other optional detachable means. The specific connection method can be set by those skilled in the art according to their own needs, and will not be elaborated here.

[0033] Below the first side plate 8 and the second side plate 22, there are also fasteners 21 respectively. The fasteners 21 are fixedly connected to the side frame 5 and fit against the outer wall of the drone fuel tank, further strengthening the support of the outer wall of the drone fuel tank.

[0034] In one alternative embodiment, the second outer wall support assembly includes two first uprights 13, both of which are fixed to the top surface of the support platform 3 and are symmetrically arranged. The two first uprights 13 are respectively close to the two side frames 5. A first outer support plate 12 is fixed to the top of the first upright 13, and the first outer support plate 12 is adapted to the outer side wall of the UAV fuel tank.

[0035] The drone fuel tank moves from the side away from the first support pole 13 to above the device, and the first outer support plate 12 supports one end of the drone fuel tank.

[0036] In one alternative embodiment, the inner wall support assembly includes an intermediate frame 9 fixed to the top surface of the support platform 3. The intermediate frame 9 is located in the middle of the two side frames 5. A third inner support plate 15 is fixed to the top of the intermediate frame 9 via a short rod 20. The third inner support plate 15 is located on the side of the intermediate frame 9 near the first outer support plate 12. A first inner support plate 10 and a second inner support plate 11 are fixed to opposite sides of the intermediate frame 9. The first inner support plate 10 and the second inner support plate 11 on the same side are arranged vertically. The third inner support plate 15, the first inner support plate 10, and the second inner support plate 11 are all adapted to the recess of the UAV fuel tank. The two first inner support plates 10 and the two second inner support plates 11 are respectively close to the two side frames 5.

[0037] The recessed area of ​​the drone's fuel tank is supported by the third inner support plate 15, the first inner support plate 10, and the second inner support plate 11.

[0038] In one alternative embodiment, the fixing assembly includes a top frame 6, which is detachably connected to the top of the two side frames 5. A first connector 7 is fixedly connected to the middle of the top frame 6. A second outer support plate 14 is fixedly connected to the end of the first connector 7 away from the top frame 6. The second outer support plate 14 is correspondingly arranged with a third inner support plate 15. The second outer support plate 14 is adapted to the outer side wall of the drone fuel tank.

[0039] The top frame 6 is connected by bolts, pins, or other quick-disassembly methods; the specific connection method is not limited.

[0040] The second outer support plate 14 and the third inner support plate 15 are correspondingly arranged and work together to further clamp and fix the drone fuel tank, preventing the drone fuel tank from shaking during the testing process.

[0041] In one alternative embodiment, the positioning assembly includes a first positioning support 16 and a second positioning support 17 fixed to the top surface of the support platform 3. The first positioning support 16 and the second positioning support 17 are located between the side frame 5 and the intermediate frame 9. The second positioning support 17 is correspondingly arranged to the bottom wall of the drone fuel tank, and the first positioning support 16 is correspondingly arranged to the outer side wall of the drone fuel tank. The positioning pins on the first positioning support 16 and the second positioning support 17 are correspondingly arranged and adapted to the multiple positioning holes of the drone fuel tank.

[0042] The positioning components are provided in two sets. Each set of positioning components includes a first positioning support 16 and a second positioning support 17. Positioning pins are detachably connected to the first positioning support 16 and the second positioning support 17. The two sets of positioning components are located on opposite sides of the side frame 5. When the drone fuel tank is installed, the positioning holes on the drone fuel tank are set to correspond one-to-one with the pin holes on the first positioning support 16 and the second positioning support 17. Multiple positioning pins are inserted into the corresponding positioning holes to position and fix the drone fuel tank.

[0043] In one alternative, two vertically arranged second uprights 23 are fixedly connected to the top surface of the support platform 3, and a horizontal plate 24 is fixedly connected between the top ends of the two second uprights 23. The horizontal plate 24 is located between the first upright 13 and the intermediate frame 9.

[0044] The horizontal plate 24 supports the bottom of one side of the drone's fuel tank.

[0045] In one alternative design, support legs 2 are installed at the four corners of the bottom of the support 1, and the height of the support legs 2 is adjustable. The support legs 2 can be used to adjust the horizontal position of the support 1, preventing the support 1 from tilting and affecting the test.

[0046] The specific working process is as follows: First, separate the top frame 6 from the side frame 5, remove the top frame 6, remove the first side plate 8 and the second side plate 22 on the side frame 5, and place the drone fuel tank into the device from the direction away from the first outer support plate 12. Position and fix the drone fuel tank through the first positioning support 16 and the second positioning support 17. At this time, the first inner support plate 10, the second inner support plate 11 and the third inner support plate 15 are all in contact with the recess of the drone fuel tank. Install the first side plate 8 and the second side plate 22 and adjust them to fit against the outer wall of the drone fuel tank. Install the top frame 6 so that the second outer support plate 14 fits against the outer wall of the drone fuel tank, and the installation is completed.

[0047] Observe the levelness of the support platform 3 using a level or visual inspection, and adjust the support platform 3 to a level state using the support legs 2. Connect the compressed air pipeline to the oil-water separator, adjust the pressure and connect it to the pressure gauge, and then connect the pressure gauge to the fuel tank vent pipe. After confirming that everything is correct, open the valve to inject compressed air into the drone's fuel tank until the pressure gauge reaches the set value. Stop the pressurization and maintain the pressure in the drone's fuel tank. Pour the medium into the fuel tank and let it stand at room temperature for a set time.

[0048] Remove the pins between the support platform 3 and the bracket 1, and use a forklift or other transportation to move the support platform 3 to a low-temperature or high-temperature environment for testing. After the test is completed, restore it to its original position, depressurize the drone's fuel tank, remove the top frame 6, the first side plate 8 and the second side plate 22, drain the medium, and remove the drone's fuel tank.

[0049] Example 2

[0050] The difference from Embodiment 1 is that, in this embodiment, the second side plate 22 and the side frame 5, and the first side plate 8 and the side frame 5 can move relative to each other. A displacement measuring component or a pressure detection component is provided between the second side plate 22, the first side plate 8 and the side frame 5. The second inner support plate 11 and the intermediate frame 9, and the first inner support plate 10 and the intermediate frame 9 can move relative to each other. A displacement measuring component or a pressure detection component is provided between the first inner support plate 10, the second inner support plate 11 and the intermediate frame 9. The specific arrangement can be selected according to the actual needs of those skilled in the art, and will not be elaborated here.

[0051] This setup allows for real-time monitoring of the deformation and pressure changes of the drone's fuel tank, facilitating the collection of data on changes in the tank's shape and pressure during the experiment.

[0052] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A testing fixture for a drone fuel tank, characterized in that, include: A bracket (1) is detachably connected to a support platform (3) at its top. Two sets of first outer wall support components and one set of second outer wall support components are provided on the top surface of the support platform (3). Both sets of first outer wall support components and the second outer wall support components are adapted to the outer wall of the UAV fuel tank. The two sets of first outer wall support components are located on opposite sides of the support platform (3) and are arranged facing each other. The second outer wall support component is located on the side of the support platform (3) adjacent to the first outer wall support component. An inner wall support component is provided between the two first outer wall support components. The inner wall support component is adapted to the recess of the UAV fuel tank. A fixing component is detachably connected between the top ends of the two sets of first outer wall support components. The fixing component is adapted to the outer side of the UAV fuel tank. A positioning component is provided between the first outer wall support component and the inner wall support component. The positioning component is fixed to the top surface of the support platform (3).

2. The UAV fuel tank testing fixture according to claim 1, characterized in that: The first outer wall support assembly includes a side frame (5), which is vertically arranged. Both side frames (5) are detachably connected to a plurality of first side plates (8) and a second side plate (22) on the side that is close to each other. The first side plate (8) and the second side plate (22) are both vertically arranged. The first side plate (8) and the second side plate (22) are both adapted to the outer wall of the UAV fuel tank. The plurality of first side plates (8) are arranged sequentially at intervals along the direction away from the second outer wall support assembly. The second side plate (22) is located at the end of the side frame (5) away from the second outer wall support assembly.

3. The UAV fuel tank testing fixture according to claim 2, characterized in that: The second outer wall support assembly includes two first uprights (13), both of which are fixed to the top surface of the support platform (3) and are symmetrically arranged. The two first uprights (13) are symmetrically arranged and are close to the two side frames (5) respectively. A first outer support plate (12) is fixed to the top of the first upright (13), and the first outer support plate (12) is adapted to the outer wall of the UAV fuel tank.

4. The UAV fuel tank testing fixture according to claim 3, characterized in that: The inner wall support assembly includes an intermediate frame (9) fixed to the top surface of the support platform (3). The intermediate frame (9) is located in the middle of the two side frames (5). The top of the intermediate frame (9) is fixed to a third inner support plate (15) by a short rod (20). The third inner support plate (15) is located on the side of the intermediate frame (9) close to the first outer support plate (12). The two opposite sides of the intermediate frame (9) are fixed with a first inner support plate (10) and a second inner support plate (11). The first inner support plate (10) and the second inner support plate (11) on the same side are arranged vertically. The third inner support plate (15), the first inner support plate (10) and the second inner support plate (11) are all adapted to the recess of the UAV fuel tank. The two first inner support plates (10) and the two second inner support plates (11) are close to the two side frames (5).

5. The UAV fuel tank testing fixture according to claim 4, characterized in that: The fixing component includes a top frame (6), which is detachably connected to the top of the two side frames (5). A first connector (7) is fixedly connected to the middle of the top frame (6). A second outer support plate (14) is fixedly connected to the end of the first connector (7) away from the top frame (6). The second outer support plate (14) is correspondingly arranged with the third inner support plate (15). The second outer support plate (14) is adapted to the outer side wall of the UAV fuel tank.

6. The UAV fuel tank testing fixture according to claim 4, characterized in that: The positioning component includes a first positioning support (16) and a second positioning support (17) fixed to the top surface of the support platform (3). The first positioning support (16) and the second positioning support (17) are located between the side frame (5) and the intermediate frame (9). The second positioning support (17) is correspondingly set to the bottom wall of the UAV fuel tank. The first positioning support (16) is correspondingly set to the outer side wall of the UAV fuel tank. The positioning pins on the first positioning support (16) and the second positioning support (17) are correspondingly set to and adapted to the multiple positioning holes of the UAV fuel tank.

7. The UAV fuel tank testing fixture according to claim 4, characterized in that: The top surface of the support platform (3) is fixed with two vertically arranged second uprights (23), and a horizontal plate (24) is fixed between the top ends of the two second uprights (23). The horizontal plate (24) is located between the first upright (13) and the intermediate frame (9).

8. The UAV fuel tank testing fixture according to claim 1, characterized in that: The bracket (1) is equipped with four legs (2) at the bottom corners, and the height of the legs (2) is adjustable.

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