Flat plate type sealing plate combined connecting structure

Abstract

The invention belongs to the technical field of aviation aircraft structure design, and particularly relates to a flat plate type sealing plate combined connecting structure. The structure comprises a rear beam, and a rear edge framework is installed on the rear beam; the trailing edge wall plate is connected with the trailing edge framework, a trailing edge layer plate area is arranged at the end, away from the rear beam, of the trailing edge wall plate, and the end face of the trailing edge layer plate area is flush with the end face of the trailing edge framework; the reinforced belt plate is connected with the end face of the trailing edge laminate area and the end face of the trailing edge framework through quick-release fasteners; and the flat plate type sealing plate is connected with the reinforced belt plate through a quick-release fastener. According to the flat plate type sealing plate combined connecting structure, connection between the airplane sealing plate and the fixed rear edge of the wing can be achieved, and weight reduction of the structure is achieved while load transmission is guaranteed.

Description

Technical Field

[0001] This application belongs to the field of aircraft structural design technology, and specifically relates to a flat plate sealing plate combined connection structure. Background Technology

[0002] A fixed sealing structure is typically installed between the fixed trailing edge of an aircraft wing and the aileron, a moving surface, to ensure that the sealing plate remains in contact and adheres to the outer surface of the control surface during deflection, achieving an aerodynamic seal between the control surface and the wing trailing edge. This fixed sealing structure transmits significant loads to its connecting structure during control surface deflection, placing high demands on the static strength and fatigue performance of the connecting structure.

[0003] Under fixed structural support, T-shaped composite sealing plate structures are prone to delamination due to fatigue at the rounded corners of the T-shaped ribs, leading to insufficient load-bearing capacity and sealing failure. Considering the maintenance needs of the rear edge system (actuators), the need for rapid disassembly of the sealing plate is also crucial. Currently, disassembling a T-shaped sealing plate requires first removing the fixed rear edge cover before removing the fasteners on the T-shaped ribs, significantly increasing disassembly and maintenance time. Therefore, it is necessary to comprehensively consider the strength and stiffness requirements of the fixed rear edge, system layout characteristics, and load distribution effects to design a flat plate sealing plate combination connection structure that ensures efficient load transfer while minimizing structural weight.

[0004] Therefore, there is an urgent need for a technical solution to overcome or mitigate at least one of the aforementioned defects in the existing technology. Summary of the Invention

[0005] The purpose of this application is to provide a flat-plate sealing plate assembly connection structure to solve at least one problem existing in the prior art.

[0006] The technical solution of this application is:

[0007] A flat-plate sealing plate assembly connection structure includes:

[0008] Rear beam, on which a rear edge frame is mounted;

[0009] The rear edge panel is connected to the rear edge frame. The end of the rear edge panel away from the rear beam has a tail edge layer area, and the end face of the tail edge layer area is flush with the end face of the rear edge frame.

[0010] A reinforcing strip plate, wherein the reinforcing strip plate is connected to the end face of the trailing edge layer plate area and the trailing edge skeleton by quick-release fasteners;

[0011] A flat sealing plate, which is connected to the reinforcing strip plate by quick-release fasteners.

[0012] In at least one embodiment of this application, multiple trailing edge frames are mounted parallel to each other along the span of the rear beam.

[0013] In at least one embodiment of this application, the distance between the two trailing edge skeletons is 300-350 mm.

[0014] In at least one embodiment of this application, the trailing edge frame includes a partition and a suspension joint.

[0015] In at least one embodiment of this application, multiple partitions and suspension joints are arranged.

[0016] In at least one embodiment of this application, both the partition and the suspension joint are provided with weight-reducing holes.

[0017] In at least one embodiment of this application, the partition is either a web type or a truss type.

[0018] In at least one embodiment of this application, the rear edge wall panel is one of a honeycomb wall panel, a foam sandwich wall panel, a metal reinforced wall panel, or a grid wall panel.

[0019] In at least one embodiment of this application, the reinforcing strip includes a plurality of reinforcing bars.

[0020] In at least one embodiment of this application, the reinforcing strip is a τ-shaped structure with flanges.

[0021] In at least one embodiment of this application, the reinforcing strip is an I-shaped structure.

[0022] In at least one embodiment of this application, the reinforcing strip is a T-shaped structure.

[0023] In at least one embodiment of this application, the quick-release fasteners used to connect the reinforcing strip plate to the tail edge plate area are arranged in a single row or double row.

[0024] In at least one embodiment of this application, two quick-release fasteners are arranged at the connection between the reinforcing strip and the end face of the rear edge skeleton.

[0025] In at least one embodiment of this application, the quick-release fasteners for connecting the flat sealing plate to the reinforcing strip are arranged in a single row or double row.

[0026] In at least one embodiment of this application, the quick-release fastener is one of a quick-release lock, a plate nut and bolt assembly, or a one-way disassembly fastener.

[0027] The invention has at least the following beneficial technical effects:

[0028] The flat sealing plate combination connection structure of this application can realize the connection between the aircraft sealing plate and the fixed trailing edge of the wing, ensuring load transfer while reducing structural weight. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a flat-plate sealing plate assembly connection structure according to one embodiment of this application.

[0030] in:

[0031] 1. Partition plate; 2. Suspension joint; 3. Reinforcing strip plate; 4. Flat sealing plate; 5. Rear edge panel; 6. Quick-release fastener; 7. Rear beam; 8. Rib; 9. Flanged edge. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "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 application and simplifying the description, 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 limiting the scope of protection of this application.

[0034] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0035] This application provides a flat sealing plate assembly connection structure, including: a rear edge frame (partition plate 1, suspension joint 2), a reinforcing strip plate 3, a flat sealing plate 4, a rear edge wall panel 5, quick-release fasteners 6, and a rear beam 7.

[0036] Specifically, such as Figure 1As shown, a rear edge frame is installed on the rear beam 7, and the rear edge wall panel 5 is connected to the rear edge frame. The end of the rear edge wall panel 5 away from the rear beam 7 has a tail edge layer area, and the end face of the tail edge layer area is flush with the end face of the rear edge frame. The reinforcing strip plate 3 is connected to the tail edge layer area and the end face of the rear edge frame through quick-release fasteners 6. The flat sealing plate 4 is connected to the reinforcing strip plate 3 through quick-release fasteners 6.

[0037] In a preferred embodiment of this application, multiple trailing edge frames are installed parallel to each other along the span of the rear beam 7, with a spacing of 300-350mm between two trailing edge frames. In this embodiment, the spacing is 350mm. The trailing edge frame includes a bulkhead 1 and a suspension joint 2, which connect the bulkhead 1 and the suspension joint 2 to the rear beam 7 to ensure load distribution. Preferably, multiple bulkheads 1 and suspension joints 2 are arranged according to the length of the rudder surface and connection requirements. Weight reduction holes are provided on both the bulkhead 1 and the suspension joint 2. The bulkhead 1 can be either a web plate type or a truss type.

[0038] In a preferred embodiment of this application, the rear edge panel 5 is one of a honeycomb panel, a foam sandwich panel, a metal reinforced panel, or a grid panel, and the form of the rear edge panel 5 is selected according to the stiffness requirements.

[0039] At the fixed rear edge connection, the stiffening strip 3 is connected to the tail edge layer area of ​​the fixed rear edge wall panel 5. The stiffening strip 3 is also connected to the partition 1 and the suspension joint 2. Connection to the suspension joint 2 effectively diffuses the lateral load on the suspension joint, reduces the number of strut components, and achieves functional coupling and structural weight reduction. In a preferred embodiment of this application, the stiffening strip 3 includes multiple stiffeners 8 for connection to different structures, including stiffeners 8 at the joint with the rear edge frame. Stiffeners 8 are arranged between adjacent rear edge frames according to stiffness requirements. The stiffening strip 3 can be selected from various cross-sectional forms, such as a τ-shaped structure with flanges 9, an I-shaped structure, or a T-shaped structure. The τ-shaped stiffening strip 3 can improve the stiffness and fatigue performance of the structure, enhance stability, and diffuse the lateral load on the suspension joint 2.

[0040] In a preferred embodiment of this application, the quick-release fasteners 6 used to connect the reinforcing strip plate 3 to the trailing edge layer area can be arranged in a single row or in a double row; two quick-release fasteners 6 are arranged at the connection between the reinforcing strip plate 3 and the trailing edge frame end face. Similarly, the quick-release fasteners 6 used to connect the flat sealing plate 4 to the reinforcing strip plate 3 can also be arranged in a single row or in a double row. It is understood that the double-row arrangement includes both aligned and staggered arrangements.

[0041] The flat sealing plate combination connection structure of this application needs to comprehensively consider three aspects during design: (1) the structural dimensions, movement space, disassembly and installation passages of the fixed rear edge system (actuator); (2) the influence of load distribution, and the reasonable arrangement of the rear edge skeleton distance. If the skeleton arrangement distance of the rear edge partition and suspension joint is too large, the rear edge skin will bear more load, and the thickness will be increased to meet the load requirements, resulting in an increase in weight; if the skeleton arrangement distance is too small, the number of skeletons will increase, which will also increase the weight. (3) Consider that the sealing plate connection structure is arranged along the spanwise direction, which can also serve as a lateral force diffusion structure for the fixed rear edge suspension joint, thereby improving the structural design function. While solving the above problems, the sealing plate connection function is ensured, and the structural weight is reduced as much as possible.

[0042] The flat-plate sealing plate assembly connection structure of this application can be used for the connection between aircraft sealing plates and the fixed trailing edge of the wing. It has the following advantages:

[0043] 1. By cleverly utilizing the characteristics of the fixed rear edge structure, a reinforced strip plate was designed to connect the sealing plate, integrating the functions of docking, load transfer, and load diffusion. Furthermore, the arrangement of ribs ensures good fatigue performance. The connection between the reinforced strip plate and the rear edge wall panel balances the out-of-plane torque of the sealing plate, while the connection between the reinforced strip plate and the rear edge frame transfers shear force, resulting in clear load transfer.

[0044] 2. The flat sealing plate and the reinforcing strip are connected by quick-release fasteners, which can realize quick disassembly and assembly of the sealing plate and has good maintenance performance.

[0045] 3. The stiffening strips are continuously arranged along the spanwise direction in the fixed rear edge compartment and connect the rear edge skeleton. This can realize the function of diffusing the lateral force of the main suspension joint, reduce the lateral struts, and achieve functional coupling and structural weight reduction.

[0046] 4. The preferred spacing of the fixed rear edge frame is 300-350mm, and they are evenly arranged along the span to achieve uniform diffusion of the sealing plate load to the rear edge box section.

[0047] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A flat-plate sealing plate assembly connection structure, characterized in that, include: Rear beam (7), on which a rear edge frame is mounted; The rear edge panel (5) is connected to the rear edge frame. The rear edge panel (5) has a tail edge layer area at one end away from the rear beam (7). The end face of the tail edge layer area is flush with the end face of the rear edge frame. The reinforcing strip (3) is connected to the tail edge layer area and the end face of the rear edge skeleton by quick-release fasteners (6); Flat sealing plate (4), which is connected to the reinforcing strip plate (3) by quick-release fastener (6).

2. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, Multiple trailing edge frames are installed parallel to each other along the span of the rear beam (7).

3. The flat-plate sealing plate assembly connection structure according to claim 2, characterized in that, The distance between the two rear edge skeletons is 300-350mm.

4. The flat-plate sealing plate assembly connection structure according to claim 3, characterized in that, The rear edge frame includes a partition (1) and a suspension joint (2).

5. The flat-plate sealing plate assembly connection structure according to claim 4, characterized in that, Multiple partitions (1) and multiple suspension joints (2) are arranged.

6. The flat-plate sealing plate assembly connection structure according to claim 5, characterized in that, Both the partition (1) and the suspension joint (2) are provided with weight reduction holes.

7. The flat-plate sealing plate assembly connection structure according to claim 6, characterized in that, The partition (1) is either a web type or a truss type.

8. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, The rear edge panel (5) is one of the following: honeycomb panel, foam sandwich panel, metal reinforced panel, and grid panel.

9. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, The reinforced strip (3) includes multiple reinforcing bars (8).

10. The flat-plate sealing plate assembly connection structure according to claim 9, characterized in that, The reinforced strip plate (3) is a τ-shaped structure with flanges (9).

11. The flat-plate sealing plate assembly connection structure according to claim 9, characterized in that, The reinforced strip plate (3) has an I-shaped structure.

12. The flat-plate sealing plate assembly connection structure according to claim 9, characterized in that, The reinforced strip plate (3) is a T-shaped structure.

13. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, The quick-release fasteners (6) used to connect the reinforcing strip (3) to the tail edge layer area are arranged in a single row or double row.

14. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, Two quick-release fasteners (6) are arranged at the connection between the reinforcing strip plate (3) and the end face of the rear edge skeleton.

15. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, The quick-release fasteners (6) used to connect the flat sealing plate (4) to the reinforcing strip plate (3) are arranged in a single row or double row.

16. The flat-plate sealing plate assembly connection structure according to claim 1, characterized in that, The quick-release fastener (6) is one of the quick-release lock, plate nut and bolt assembly, and one-way disassembly fastener.

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