Oil tank connecting structure and aircraft
By combining flexible connectors and a frame structure, the problems of complex connection structure and high usage risk of drone fuel tanks are solved, providing simple and low-cost limiting and shock absorption effects, and is suitable for various drone models.
Patent Information
- Application Number
- CN202423268623.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing metal fuel tanks for drones have complex connection structures, limited applicability, and pose a high risk of leakage when used in vibration and shock environments.
The system employs a combination structure consisting of a first flexible connector, a second flexible connector, a third flexible connector, two first partition frames, and at least one middle partition frame. It utilizes the compression and rebound of flexible materials under vibration to provide limiting, shock absorption, and protection, thereby reducing the risks associated with the use of the fuel tank.
It achieves a simple, low-cost, and easy-to-install oil tank connection, has a wide range of applications, and can effectively protect the oil tank under vibration and impact, reducing the risk of leakage.
Smart Images
Figure CN223521039U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of aircraft technology, in particular to an oil tank connecting structure and an aircraft. BACKGROUND
[0002] The metal oil tank of the unmanned aerial vehicle is an important part of the fuel system of the unmanned aerial vehicle, and its main function is to store fuel and ensure the supply of fuel with specified pressure and flow under all possible altitudes and conditions.
[0003] At present, the metal oil tank of the unmanned aerial vehicle usually adopts a steel band fixing or a hard connecting structure. The steel band fixing connecting structure is complex in structure, is suitable for medium and large unmanned aerial vehicles, and is not suitable for metal oil tanks of zero-length launch, target vehicles and missiles. The hard connecting structure is complex in structure and has a high risk coefficient, and the impact vibration environment can easily cause damage to the oil tank, resulting in leakage of the oil tank. CONTENT OF THE UTILITY MODEL
[0004] The oil tank connecting structure provided by the embodiments of the present application solves the problems of the existing oil tank connecting structure, such as complex structure, small application range and high risk coefficient.
[0005] In a first aspect, the utility model provides an oil tank connecting structure, which comprises a first flexible connecting piece, a second flexible connecting piece, a third flexible connecting piece, two first partition frames and at least one middle partition frame; the two first partition frames are arranged at two ends of the oil tank respectively; the middle partition frame is sleeved on the middle part of the oil tank along the length direction of the oil tank; the first flexible connecting piece is installed between the first partition frame and the oil tank; the second flexible connecting piece and the third flexible connecting piece are respectively installed between the middle partition frame and the outer side of the oil tank, and the second flexible connecting piece and the third flexible connecting piece are arranged in correspondence with each other in up and down directions; and the third flexible connecting piece is installed between the middle partition frame and the top of the oil tank.
[0006] In combination with the first aspect, in a possible implementation manner, the third flexible connecting piece comprises a flexible connecting block and two positioning sheets; the flexible connecting block is installed between the middle partition frame and the top of the oil tank; and the two positioning sheets are installed on the outer side of the oil tank, and each positioning sheet abuts against the side wall of the flexible connecting block.
[0007] In combination with the first aspect, in a possible implementation manner, the material of the flexible connecting block is rubber.
[0008] In combination with the first aspect, in a possible implementation manner, the positioning sheet comprises a self-adhesive positioning sheet.
[0009] In combination with the first aspect, in a possible implementation manner, the height of the flexible connecting block is greater than the distance between the middle partition frame and the top of the oil tank.
[0010] With the first aspect, in a possible implementation, the flexible connecting block and the top of the oil tank are in surface contact, and the area of the contact surface is less than the area of the top of the partition frame.
[0011] With the first aspect, in a possible implementation, the first flexible connecting member comprises a rectangular rubber strip.
[0012] With the first aspect, in a possible implementation, the second flexible connecting member comprises a U-shaped rubber strip.
[0013] With the first aspect, in a possible implementation, a plurality of the partition frames are sleeved on the oil tank along the length direction of the oil tank.
[0014] In the second aspect, the utility model embodiment provides a kind of aircraft, and the aircraft includes the oil tank connecting structure described above.
[0015] The one or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
[0016] The utility model embodiment provides an oil tank connecting structure, which comprises a first flexible connecting member, a second flexible connecting member, a third flexible connecting member, two first partition frames and at least one partition frame. The two first partition frames are arranged at the two ends of the oil tank. The partition frame is sleeved on the middle part of the oil tank along the length direction of the oil tank. The first flexible connecting member is installed between the first partition frame and the oil tank. The second flexible connecting member and the third flexible connecting member are respectively installed between the partition frame and the outer side of the oil tank, and the second flexible connecting member and the third flexible connecting member are arranged in correspondence with each other. The third flexible connecting member is installed between the partition frame and the top of the oil tank. The first flexible connecting member, the second flexible connecting member and the third flexible connecting member of the present application not only have a much lower cost than steel belt fixation and hard connection, but also can compress and rebound under vibration and impact working conditions, thereby limiting, damping and protecting the oil tank, thereby reducing the use risk of the oil tank. In addition, the structure of the present application is simple, widely applicable, easy, accurate and fast to install. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0018] Figure 1 The installation schematic diagram of the oil tank connecting structure provided in the embodiments of the present application is shown in the following figure:
[0019] Figure 2A schematic view of the first flexible connecting piece and the second flexible connecting piece provided by the embodiment of the present application is installed on the oil tank.
[0020] Figure 3 A sectional view of the oil tank connecting structure provided by the embodiment of the present application is shown in the figure.
[0021] Figure 4 A Figure 3 An enlarged view of A in the figure.
[0022] Figure legend: 1-first flexible connecting piece; 2-second flexible connecting piece; 3-third flexible connecting piece; 31-flexible connecting block; 32-positioning sheet; 4-middle partition frame; 5-first partition frame; 6-oil tank. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.
[0025] As Figures 1-4The utility model discloses an oil tank connecting structure, which comprises a first flexible connecting piece 1, a second flexible connecting piece 2, a third flexible connecting piece 3, two first partition frames 5 and at least one middle partition frame 4. The two first partition frames 5 are respectively arranged at two ends of the oil tank 6. The middle partition frame 4 is sleeved at the middle part of the oil tank 6 along the length direction of the oil tank 6. Specifically, between the oil tank 6 and the five degrees of freedom of the fuselage structure (the front end face of the oil tank 6, the rear end face of the oil tank 6, the left side face of the oil tank 6, the right side face of the oil tank 6 and the bottom face of the oil tank 6), a 2mm assembly gap is reserved, and the design of the oil tank 6 is completed.
[0026] In the embodiment of the application, the first flexible connecting piece 1 is installed between the first partition frame 5 and the oil tank 6. The second flexible connecting piece 2 and the third flexible connecting piece 3 are respectively installed between the middle partition frame 4 and the outer side of the oil tank 6, and the second flexible connecting piece 2 and the third flexible connecting piece 3 are correspondingly arranged above and below. Specifically, the thickness of the first flexible connecting piece 1 and the second flexible connecting piece 2 is 2mm, the width of the first flexible connecting piece 1 and the second flexible connecting piece 2 is greater than 20mm, and the length of the first flexible connecting piece 1 and the second flexible connecting piece 2 is greater than 20mm and as long as possible, so as to realize low-cost design. When the first flexible connecting piece 1 and the second flexible connecting piece 2 are assembled, the surface of the oil tank 6 is cleaned first to remove dust, oil stains and other impurities that are not conducive to adhesion, then the adhesion positions of the first flexible connecting piece 1 and the second flexible connecting piece 2 are drawn on the five planes (the front end face, the rear end face, the left side face, the right side face and the bottom face) of the oil tank 6, then the first flexible connecting piece 1 and the second flexible connecting piece 2 of appropriate size are cut, and finally the first flexible connecting piece 1 and the second flexible connecting piece 2 are adhered to the line drawing area of the oil tank 6.
[0027] In the embodiment of the application, the third flexible connecting piece 3 is installed between the middle partition frame 4 and the top of the oil tank 6. The first flexible connecting piece 1, the second flexible connecting piece 2 and the third flexible connecting piece 3 not only have a cost far lower than that of steel belt fixing and hard connection, but also can compress and rebound under vibration and impact working conditions, thereby limiting, damping and protecting the oil tank 6. Specifically, after the first flexible connecting piece 1 and the second flexible connecting piece 2 are installed, the oil tank 6 is penetrated through the lubricating medium (the lubricating medium can be soap water, lubricating grease, a thin-walled plastic bag or the like) from the first partition frame 5 at the top of the middle partition frame 4 to the rear end of the fuselage to the first partition frame 5 at the front end of the fuselage, and then the first partition frame 5 at the front end of the fuselage is installed, and the oil tank 6 is assembled under the condition that the first flexible connecting piece 1 and the first partition frame 5, and the second flexible connecting piece 2 and the middle partition frame 4 are in complete contact or there is a small amount of compression. After the oil tank 6 is assembled, the third flexible connecting piece 3 is installed between the top of the oil tank 6 and the middle partition frame 4, which is simple in structure, wide in application range, easy, accurate and fast to install.
[0028] The utility model discloses an oil tank connecting structure, which comprises a first flexible connecting piece 1, a second flexible connecting piece 2, a third flexible connecting piece 3, two first partition frames 5 and at least one middle partition frame 4. The two first partition frames 5 are arranged at two ends of the oil tank 6 respectively. The middle partition frame 4 is sleeved at the middle part of the oil tank 6 along the length direction of the oil tank 6. The first flexible connecting piece 1 is installed between the first partition frame 5 and the oil tank 6. The second flexible connecting piece 2 and the third flexible connecting piece 3 are installed between the middle partition frame 4 and the outer side of the oil tank 6 respectively, and the second flexible connecting piece 2 and the third flexible connecting piece 3 are arranged in correspondence with each other in up and down directions. The third flexible connecting piece 3 is installed between the middle partition frame 4 and the top of the oil tank 6. The first flexible connecting piece 1, the second flexible connecting piece 2 and the third flexible connecting piece 3 of the application not only have a cost far lower than that of a steel belt fixing and hard connection, but also can be compressed and rebounded under a vibration and impact working condition, thereby forming a limiting, damping and protecting effect on the oil tank 6, so as to reduce the use risk of the oil tank 6. In addition, the application has a simple structure, a wide application range, and is easy, accurate and fast to install.
[0029] As shown in Figure 4 The third flexible connecting piece 3 comprises a flexible connecting block 31 and two positioning sheets 32. The flexible connecting block 31 is installed between the middle partition frame 4 and the top of the oil tank 6. The two positioning sheets 32 are installed on the outer side of the oil tank 6, and each positioning sheet 32 abuts against the side wall of the flexible connecting block 31. The top curved surface of the flexible connecting block 31 is matched with the top curved surface of the middle partition frame 4 and is centrally symmetrical, the flexible connecting block 31 needs to be customized, and a metal mold is adopted in a low-cost design. After the oil tank 6 is assembled, the flexible connecting block 31 is filled between the top of the oil tank 6 and the middle partition frame 4, the flexible connecting block 31 is slid to the end surface of the middle partition frame 4 through the top of the oil tank 6, and the flexible connecting block 31 is marked by line with respect to the curved surface of the middle partition frame 4. The height of the flexible connecting block 31 is H1, the distance from the bottom of the flexible connecting block 31 to the marked position is H2, the excess amount H3 of the flexible connecting block 31 is H1-H2, the cutting amount H4 of the flexible connecting block 31 is H3-2, and the bottom of the flexible connecting block 31 is cut according to the calculation result of H4. Since the top surface of the oil tank 6 is a deformation surface, the gap between each middle partition frame 4 and the top of the oil tank 6 is inconsistent, and the above method can ensure that the compression amount of the rubber block is 2mm. In addition, due to the three factors of the top of the flexible connecting block 31 and the middle partition frame 4 being matched, being centrally symmetrical and the product being compressed, the flexible connecting block 31 has completed the limiting of four degrees of freedom, that is, up, down, left and right. Then, the two positioning sheets 32 are adhered to the top surface of the oil tank 6 and abut against the front and rear end surfaces of the positioning sheet 32, and the front and rear degrees of freedom of the flexible connecting block 31 are limited.
[0030] In the embodiments of the present application, the flexible connecting block 31 is made of rubber. Specifically, the flexible connecting block 31 is made of 35° silicone rubber. Of course, the flexible connecting block 31 can also be made of other materials with good elasticity and compressibility, such as fluororubber, nitrile rubber, hydrogenated nitrile rubber, polyurethane, EVA foam, etc.
[0031] In the embodiments of the present application, the positioning sheet 32 includes a self-adhesive positioning sheet. Specifically, the self-adhesive positioning sheet is a 3M self-adhesive positioning sheet.
[0032] In the embodiments of the present application, the height of the flexible connecting block 31 is greater than the distance between the top of the bulkhead frame 4 and the top of the oil tank 6. Specifically, the top curved surface of the flexible connecting block 31 and the top curved surface of the bulkhead frame 4 are symmetrical and concentric, and the height of the flexible connecting block 31 is 5-6 mm greater than the distance between the top of the bulkhead frame 4 and the top of the oil tank 6. The 5-6 mm excess compensates for the welding deformation of the oil tank 6 and assembly errors during assembly. The edges of the assembly surface of the flexible connecting block 31 are rounded by 1 mm to facilitate the compression of the flexible connecting block 31 when it is assembled against the bulkhead frame 4.
[0033] In the embodiments of the present application, the top of the flexible connecting block 31 and the oil tank 6 is in surface contact, and the area of the contact surface is less than the area of the top of the bulkhead frame 4. Specifically, the oil tank 6 is generally made of metal. During the welding process of the metal oil tank 6, the weld will cause welding deformation to the plane of the oil tank 6. At least one of the six planes of the oil tank 6 cannot be kept in shape. In order to improve the assembly feasibility of the oil tank 6, the deformed surface of the oil tank 6 is designed as the top surface of the oil tank 6. In the design of the unmanned aerial vehicle, the top surface of the oil tank 6 generally needs to reserve space for cable and air pipe assembly.
[0034] As shown in Figure 2 , the first flexible connecting piece 1 includes a rectangular rubber strip. Specifically, the first flexible connecting piece 1 is made of 50° hardness silicone rubber with single-sided adhesive, which is purchased in bulk and cut and assembled on site. Of course, the first flexible connecting piece 1 can also be made of polyurethane, fluororubber, nitrile rubber, hydrogenated nitrile rubber, EVA foam, etc. with good elasticity and compressibility.
[0035] Continuing to refer to Figure 2 , the second flexible connecting piece 2 includes a U-shaped rubber strip. Specifically, the second flexible connecting piece 2 is made of commonly used 50° hardness silicone rubber with single-sided adhesive, which is purchased in bulk and cut and assembled on site. Of course, the first flexible connecting piece 1 can also be made of polyurethane, fluororubber, nitrile rubber, hydrogenated nitrile rubber, EVA foam, etc. with good elasticity and compressibility.
[0036] As shown in Figure 1 , a plurality of bulkhead frames 4 are spaced apart and arranged in the length direction of the oil tank 6.
[0037] The embodiment of the present application provides a kind of aircraft, the aircraft includes the fuel tank connecting structure described above.
[0038] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.
[0039] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited to the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the present application.
Claims
1. An oil tank connecting structure characterized by comprising: The oil tank connecting structure comprises a first flexible connecting piece (1), a second flexible connecting piece (2), a third flexible connecting piece (3), two first partition frames (5) and at least one middle partition frame (4). The two first partition frames (5) are respectively arranged at two ends of the oil tank (6). The middle partition frame (4) is sleeved on the middle part of the oil tank (6) along the length direction of the oil tank (6). The first flexible connecting piece (1) is arranged between the first partition frame (5) and the oil tank (6). The second flexible connecting piece (2) and the third flexible connecting piece (3) are respectively arranged between the middle partition frame (4) and the outside of the oil tank (6), and the second flexible connecting piece (2) and the third flexible connecting piece (3) are arranged in correspondence with each other. The third flexible connecting piece (3) is arranged between the middle partition frame (4) and the top of the oil tank (6).
2. The oil tank connection structure according to claim 1, characterized by The third flexible connecting piece (3) comprises a flexible connecting block (31) and two positioning pieces (32). The flexible connecting block (31) is arranged between the middle partition frame (4) and the top of the oil tank (6). The two positioning pieces (32) are arranged on the outside of the oil tank (6), and each positioning piece (32) abuts against the side wall of the flexible connecting block (31).
3. The oil tank connection structure according to claim 2, characterized by The flexible connecting block (31) is made of rubber.
4. The oil tank connection structure according to claim 2, characterized by The positioning piece (32) is a self-adhesive positioning piece.
5. The oil tank connection structure according to claim 2, characterized by The height of the flexible connecting block (31) is greater than the distance between the middle partition frame (4) and the top of the oil tank (6).
6. The oil tank connection structure according to claim 2, characterized by The top of the flexible connecting block (31) and the top of the oil tank (6) are in surface contact, and the area of the contact surface is less than the area of the top of the middle partition frame (4).
7. The oil tank connecting structure according to claim 1, characterized by The first flexible connecting piece (1) comprises a rectangular rubber strip.
8. The oil tank connection structure according to claim 1, characterized by The second flexible connecting piece (2) comprises a U-shaped rubber strip.
9. The oil tank connecting structure according to claim 1, characterized by A plurality of middle partition frames (4) are spaced apart and sleeved on the oil tank (6) along the length direction of the oil tank (6).
10. An aircraft, characterized in that The oil tank connecting structure comprises a first flexible connecting piece (1), a second flexible connecting piece (2), a third flexible connecting piece (3), two first partition frames (5) and at least one middle partition frame (4).