Span-wise beam corner connection assembly and aircraft including the assembly

Abstract

The present invention relates to a span-beam corner connection assembly and an aircraft including the assembly. The span-beam corner connection assembly includes a span-beam web, a T-shaped long stringer, a No. 1 rib web, a No. 1 rib upper edge strip, a first corner box, and a second corner box; wherein, at the root of the T-shaped long stringer, the span-beam web is corner-cut, the first corner box and the second corner box only clamp the T-shaped long stringer between the first corner box and the second corner box, and the first corner box and the second corner box are also aligned with the outer wing long stringer joint to clamp the No. 1 rib web and the No. 1 rib upper edge strip between the first corner box and the second corner box and the outer wing long stringer joint. According to the above technical scheme, the present invention can achieve the following beneficial technical effects: it avoids the complexity of the force in the span-beam corner connection area and simplifies the connection structure.

Description

Technical Field

[0001] The invention relates to a span-wise beam corner connection assembly and an aircraft comprising the assembly, and relates to the technical field of aircraft structure design. Background Art

[0002] In the central wing layout of civil aircraft, the span-beam layout plays an important role. The span-beam plays the role of supporting the central wing and transferring loads, and the connection structure between the span-beam and the No. 1 rib is the key to supporting and transferring loads.

[0003] There are three typical models of machines using span-beam structures in the prior art: A, B, and C:

[0004] The connection structure of the upper corner of the span beam of model A and rib No. 1 is connected to the upper wall plate T-shaped long stringer, the web plate T-shaped piece of rib No. 1, and the upper edge strip lug of rib No. 1 through two corner boxes. This connection structure is designed based on the upper edge strip of rib No. 1 with lugs;

[0005] The connection structure of the upper corner of the span beam of the B model and the No. 1 rib is that the two corner boxes clamp the upper wall plate T-shaped long stringer and the span beam, and the joint with the outer wing I-shaped long stringer is butted against the upper edge strip of the No. 1 rib; the web of the span beam is directly connected to the web reinforcement of the No. 1 rib;

[0006] The connection structure between the upper corner of the span-wise beam and the No. 1 rib of the C model consists of two corner boxes clamping the upper wall panel T-shaped long stringer and the span-wise beam, and the upper edge strip of the No. 1 rib and the web and T-shaped piece of the No. 1 rib against the outer wing corner box; the web of the span-wise beam is connected to the T-shaped piece of the web of the No. 1 rib.

[0007] However, the above-mentioned models in the prior art all have some problems.

[0008] For model A, the corner box is connected to the upper edge strip ear of rib No. 1, the web T-piece of rib No. 1, and the web of span beam. The load of the outer wing wall is transmitted through the ear of rib No. 1 and the corner box in addition to the T-shaped long stringer, which makes the load at the corner of the web of span beam complex. The web will increase in thickness and lose structural efficiency, and fatigue sensitive areas will be formed locally, affecting the fatigue life of the structure.

[0009] Model B, the corner box clamps the web of the span beam and the T-shaped long stringer. The local force of the span beam is relatively complex. The web of the span beam is thickened in the docking area, and the connection area with the web of the No. 1 rib is reinforced with transverse reinforcement. The regional structural efficiency is reduced and the weight is increased. The connection between the reinforcement and the web of the span beam increases the assembly process.

[0010] For the C model, the corner box is directly connected to multiple parts in the span direction and heading direction. The connection structure has many interlayers, as many as five layers. This causes serious local stacking of materials and increases weight. The force at the corners of the span-wise beam is complex. Summary of the invention

[0011] An object of the present invention is to provide a span-wise beam corner connection assembly that can overcome the defects of the prior art, avoid complex force in the span-wise beam corner connection area, and simplify the connection structure.

[0012] The above objects of the present invention are achieved by a span-wise beam corner connection assembly, the span-wise beam corner connection assembly comprising a span-wise beam web, a T-shaped long stringer, a No. 1 rib web, a No. 1 rib upper edge strip, a first corner box, and a second corner box;

[0013] Wherein, at the root of the T-shaped long stringer, the web of the span-wise beam is corner-cut off, the first corner box and the second corner box only clamp the T-shaped long stringer pair between the first corner box and the second corner box, and the first corner box and the second corner box are also aligned with the outer wing long stringer joint to clamp the web of the No. 1 rib and the upper edge strip of the No. 1 rib pair between the first corner box and the second corner box and the outer wing long stringer joint.

[0014] According to the above technical solution, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: it avoids the complex force on the span-wise beam corner connection area and simplifies the connection structure.

[0015] Preferably, the second corner box is not connected to the span-wise beam web.

[0016] According to the above technical scheme, the span-beam corner connection assembly of the present invention can achieve the following beneficial technical effects: since the second corner box is not connected to the span-beam web, the first corner box and the second corner box only clamp the T-shaped long stringer between the first corner box and the second corner box, so the load is directly transmitted to the T-shaped long stringer instead of directly transmitted to the span-beam web, thereby avoiding the complex force of the span-beam corner connection area; the number of interlayers of the entire span-beam corner connection assembly in the heading direction is reduced from five layers in the prior art to three layers, thereby simplifying the connection structure.

[0017] Preferably, at a portion of the T-shaped long stringer away from a root, the first corner box is connected to the span-wise beam web and the T-shaped long stringer.

[0018] According to the above technical scheme, the span-beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the web of the span-beam can still be fixed away from the root of the T-shaped long girder, ensuring the effective connection between the span-beam and the No. 1 rib.

[0019] Preferably, the spanwise extension length of the first corner box is longer than the spanwise extension length of the second corner box.

[0020] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: since the span-wise extension length of the first corner box is longer than the span-wise extension length of the second corner box, the span-wise beam web is not connected to the second corner box, but is only connected to the first corner box and the T-shaped long girder at the longer span-wise extension length of the first corner box, thereby better avoiding the complex force in the span-wise beam corner connection area and simplifying the connection structure.

[0021] Preferably, the ratio of the spanwise extension length of the first corner box to the spanwise extension length of the second corner box is 1.30-1.60:1.

[0022] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the appropriate ratio of the span-wise extension length of the first corner box to the span-wise extension length of the second corner box, the complex force in the span-wise beam corner connection area is better avoided and the connection structure is simplified.

[0023] Preferably, the first corner box is formed with a step so as to be in close contact with the T-shaped long girder at the root of the T-shaped long girder and in close contact with the web of the span-wise beam at the part of the T-shaped long girder away from the root.

[0024] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the step structure of the first corner box, the web of the span-wise beam can be appropriately fixed between the first corner box and the T-shaped long girder, while ensuring that the first corner box and the T-shaped long girder are in close contact at the root of the T-shaped long girder, thereby better avoiding the complex force in the span-wise beam corner connection area and simplifying the connection structure.

[0025] Preferably, the height of the step is equal to the thickness of the span-wise beam web.

[0026] According to the above technical solution, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the appropriate step height, the complex force in the span-wise beam corner connection area is better avoided and the connection structure is simplified.

[0027] Preferably, the span-beam corner connection assembly further comprises a T-shaped connector, and the T-shaped connector is used to connect the span-beam web and the No. 1 rib web.

[0028] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the T-shaped connector can connect the span-wise beam web and the No. 1 rib web, further ensuring the effective connection between the span-wise beam and the No. 1 rib.

[0029] Preferably, the span-beam corner connection assembly further comprises a web cutout connector, and the web cutout connector is used to connect the cut-off edge of the span-beam web and the T-shaped connector.

[0030] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the web cut connector can connect the cut edge of the span-wise beam web and the T-shaped connector, thereby stabilizing the supporting effect of the span-wise beam web on the central wing box.

[0031] Preferably, the T-shaped connector is shortened and does not cover the first corner box and / or the second corner box, thereby being directly opposite to the upper edge strip of the first rib.

[0032] According to the above technical scheme, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the T-shaped connector is not at the same height as the web, but is directly opposite to the upper edge strip of rib No. 1, thereby avoiding the generation of a multi-layer structure in the connection area, while also ensuring the reinforcement of the web of rib No. 1.

[0033] The above object of the present invention is also achieved by an aircraft, comprising the span-wise beam corner connection assembly according to any one of the above aspects.

[0034] According to the above technical solution, the aircraft of the present invention can achieve the following beneficial technical effects: it avoids the complex force of the span-wise beam corner connection area and simplifies the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of a second corner box perspective of a span-wise beam corner connection assembly according to an embodiment of the present invention.

[0036] Figure 2 It is a schematic diagram of a first corner box perspective of a span-wise beam corner connection assembly according to an embodiment of the present invention.

[0037] Figure 3 It is a cross-sectional view of a span-wise beam corner connection assembly according to an embodiment of the present invention.

[0038] Reference numerals list

[0039] 11: span beam web;

[0040] 12: T-shaped long stringer;

[0041] 21: rib belly plate number 1;

[0042] 22: upper edge of rib number one;

[0043] 31: first corner box;

[0044] 32: Second corner box;

[0045] 41: T-shaped connector;

[0046] 42: web cutout connector;

[0047] 51: first fastener;

[0048] 52: Second fastener. DETAILED DESCRIPTION

[0049] The specific embodiments of the present invention will be described below. It should be noted that in the specific description of these embodiments, in order to be concise and clear, this specification cannot provide a detailed description of all the features of the actual embodiments. It should be understood that in the actual implementation of any embodiment, just as in the process of any engineering project or design project, in order to achieve the specific goals of the developer and to meet system-related or business-related restrictions, various specific decisions are often made, and this will also change from one embodiment to another. In addition, it can also be understood that although the efforts made in this development process may be complex and lengthy, for ordinary technicians in the field related to the content disclosed by the present invention, some changes in design, manufacturing or production based on the technical content disclosed in this disclosure are just conventional technical means, and should not be understood as insufficient content of this disclosure.

[0050] Unless otherwise defined, the technical or scientific terms used in the claims and the specification shall have the usual meaning understood by persons with ordinary skills in the technical field to which the invention belongs. The words "first", "second" and similar words used in the patent application specification and the claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limitation, but indicate the existence of at least one. "Include" or "comprises" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalent elements, and do not exclude other elements or objects. "Connected" or "connected" and other similar words are not limited to physical or mechanical connections, nor are they limited to direct or indirect connections.

[0051] Figure 1 It is a schematic diagram of a second corner box perspective of a span-wise beam corner connection assembly according to an embodiment of the present invention. Figure 2 It is a schematic diagram of a first corner box perspective of a span-wise beam corner connection assembly according to an embodiment of the present invention. Figure 3 It is a cross-sectional view of a span-wise beam corner connection assembly according to an embodiment of the present invention.

[0052] like Figures 1 to 3 As shown, according to one embodiment of the present invention, the span-beam corner connection assembly includes a span-beam web 11, a T-shaped long stringer 12, a No. 1 rib web 21, a No. 1 rib upper edge strip 22, a first corner box 31, and a second corner box 32;

[0053] Among them, at the root of the T-shaped long stringer 12, the span-wise beam web 11 is cut off at the corner, and the first corner box 31 and the second corner box 32 only clamp the T-shaped long stringer 12 between the first corner box 31 and the second corner box 32. The first corner box 31 and the second corner box 32 are also aligned with the outer wing long stringer joint to clamp the No. 1 rib web 21 and the No. 1 rib upper edge strip 22 between the first corner box 31 and the second corner box 32 and the outer wing long stringer joint.

[0054] According to the above technical solution, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: it avoids the complex force on the span-wise beam corner connection area and simplifies the connection structure.

[0055] Specifically, since the span-wise beam web 11 is corner-cut at the root of the T-shaped long stringer 12, the first corner box 31 and the second corner box 32 only sandwich the T-shaped long stringer 12 between the first corner box 31 and the second corner box 32, so the load is directly transmitted to the T-shaped long stringer 12 instead of directly to the span-wise beam web 11, thereby avoiding complex forces and stress concentration in the span-wise beam corner connection area; the number of interlayers in the heading direction of the entire span-wise beam corner connection assembly is reduced from five layers in the prior art to three layers (the T-shaped long stringer 12 is sandwiched between the first corner box 31 and the second corner box 32), and the number of interlayers in the span-wise direction is reduced from five layers in the prior art to four layers (the No. 1 rib web 21 and the No. 1 rib upper edge strip 22 are sandwiched between the first corner box 31 and the second corner box 32 and the outer wing long stringer joint), thereby simplifying the connection structure and achieving the technical effects of weight reduction and facilitating assembly.

[0056] The corner box is weakly connected to the span-wise beam web 11 , that is, the corner box on the same side of the span-wise beam web 11 (that is, the first corner box 31 ) is connected to the span-wise beam web 11 at a position away from the root of the T-shaped long girder 12 , and the corner box on the other side of the span-wise beam web 11 (that is, the second corner box 32 ) is not connected to the span-wise beam web 11 .

[0057] The so-called "span-wise beam web" refers to: the main component of the span-wise beam, which is in the form of a web.

[0058] The so-called "T-shaped long stringer" refers to a long stringer structure with a T-shaped cross section, which can also be called a central wing long stringer.

[0059] The so-called "rib web No. 1" refers to: the main component of rib No. 1, which is in the form of a web.

[0060] The so-called "edge strip on rib No. 1" refers to another component of rib No. 1, which is in the form of an edge strip and generally has a cross-shaped cross section.

[0061] The so-called "corner box" means that the cross section of the corner box (first corner box 31, second corner box 32) is substantially L-shaped at a right angle (for example, see Figure 3 ), and the overall shape of the corner box is roughly box-shaped.

[0062] The so-called "root of the T-shaped long stringer" refers to the part of the T-shaped long stringer close to the web of rib No. 1 and the upper edge strip of rib No. 1.

[0063] In some embodiments, Figure 1 and Figure 3 As shown, the second corner box 32 is not connected to the span beam web 11. According to the above technical solution, the span beam corner connection assembly of the present invention can achieve the following beneficial technical effects: since the second corner box is not connected to the span beam web, the first corner box and the second corner box only sandwich the T-shaped long stringer between the first corner box and the second corner box, so the load is directly transmitted to the T-shaped long stringer instead of directly transmitted to the span beam web, thus avoiding the complex force of the span beam corner connection area; the number of interlayers of the entire span beam corner connection assembly in the heading direction is reduced from five layers in the prior art to three layers, thus simplifying the connection structure.

[0064] In some embodiments, Figure 2 and Figure 3 As shown, at a position away from the root of the T-shaped long stringer 12, the first corner box 31 is connected to the span beam web 11 and the T-shaped long stringer 12. According to the above technical solution, the span beam corner connection assembly of the present invention can achieve the following beneficial technical effects: at a position away from the root of the T-shaped long stringer, the span beam web can still be fixed, ensuring the effective connection between the span beam and the No. 1 rib.

[0065] In some embodiments, Figure 3 As shown, the spanwise extension length of the first corner box 31 is longer than the spanwise extension length of the second corner box 32. According to the above technical solution, the spanwise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: since the spanwise extension length of the first corner box is longer than the spanwise extension length of the second corner box, the spanwise beam web is not connected to the second corner box, but is only connected to the first corner box and the T-shaped long stringer at the longer spanwise extension length of the first corner box, which better avoids the complex force of the spanwise beam corner connection area and simplifies the connection structure.

[0066] In some embodiments, Figure 3 As shown, the ratio of the spanwise extension length of the first corner box 31 to the spanwise extension length of the second corner box 32 is 1.30 to 1.60: 1. According to the above technical solution, the spanwise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the appropriate spanwise extension length ratio of the first corner box to the second corner box, the complex force of the spanwise beam corner connection area is better avoided, and the connection structure is simplified.

[0067] More preferably, the ratio of the spanwise extension length of the first corner box 31 to the spanwise extension length of the second corner box 32 is 1.45:1.

[0068] In some embodiments, Figure 2 and Figure 3As shown, the first corner box 31 is formed with a step, so that it is closely attached to the T-shaped long girder 12 at the root of the T-shaped long girder 12, and closely attached to the span-beam web 11 at the part away from the root of the T-shaped long girder 12. According to the above technical scheme, the span-beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the step structure of the first corner box, the span-beam web can be appropriately fixed between the first corner box and the T-shaped long girder, and at the same time, the first corner box is ensured to be closely attached to the T-shaped long girder at the root of the T-shaped long girder, which better avoids the complex force of the span-beam corner connection area and simplifies the connection structure.

[0069] In some embodiments, Figure 2 and Figure 3 As shown, the height of the step is equal to the thickness of the span beam web 11. According to the above technical solution, the span beam corner connection assembly of the present invention can achieve the following beneficial technical effects: through the appropriate step height, the complex force of the span beam corner connection area is better avoided and the connection structure is simplified.

[0070] In some embodiments, Figure 1 and Figure 2 As shown, the span-beam corner connection assembly further includes a T-shaped connector 41, which is used to connect the span-beam web 11 and the No. 1 rib web 21. According to the above technical solution, the span-beam corner connection assembly of the present invention can achieve the following beneficial technical effects: The T-shaped connector can connect the span-beam web and the No. 1 rib web, further ensuring the effective connection between the span-beam and the No. 1 rib.

[0071] The so-called "T-shaped connector" refers to a connector with a T-shaped cross-section, which is used to connect the web of the span-wise beam and the web of the No. 1 rib.

[0072] In some embodiments, Figure 1 As shown, the span-beam corner connection assembly further includes a web cut connector 42, which is used to connect the cut edge of the span-beam web 11 and the T-shaped connector 41. According to the above technical solution, the span-beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the web cut connector can connect the cut edge of the span-beam web and the T-shaped connector, thereby stabilizing the supporting effect of the span-beam web on the central wing box.

[0073] The so-called "web cut connector" refers to a connector located at the web cut, which is used to connect the cut edge of the web of the span beam and the T-shaped connector. Figure 1 As shown, the web cut connector 42 is in the form of a generally rectangular plate.

[0074] In some embodiments, Figure 1 and Figure 2As shown, the T-shaped connector 41 is shortened (compared with the prior art) and does not cover the first corner box 31 and / or the second corner box 32, so as to be directly opposite to the first rib upper edge strip 22. Figure 1 and Figure 2 As shown, one end of the T-shaped connector 41 faces the upper edge strip 22 of the first rib and is separated from the upper edge strip 22 of the first rib by a certain distance. According to the above technical solution, the span-wise beam corner connection assembly of the present invention can achieve the following beneficial technical effects: the T-shaped connector is not at the same height as the web, but directly faces the upper edge strip of the first rib, thereby avoiding the generation of a multi-layer structure in the connection area and ensuring the reinforcement of the web of the first rib.

[0075] In some embodiments, Figure 3 As shown, the first fastener 51 sequentially penetrates the first corner box 31, the T-shaped long stringer 12 and the second corner box 32 from bottom to top. Therefore, near the root of the T-shaped long stringer 12, the first fastener 51 fixes the first corner box 31, the T-shaped long stringer 12 and the second corner box 32 together, so that the T-shaped long stringer 12 is only sandwiched between the first corner box 31 and the second corner box 32.

[0076] Figure 3 Four first fasteners 51 are shown. Of course, the above number of first fasteners is only a preferred number, and those skilled in the art can understand based on the disclosure of this application that other suitable numbers of first fasteners (for example, three, five, etc.) can also be used without departing from the protection scope of the claims of this application.

[0077] In some embodiments, Figure 3 As shown, the second fastener 52 penetrates the first corner box 31, the span beam web 11 and the T-shaped long stringer 12 from bottom to top. Therefore, at the farthest part of the T-shaped long stringer 12, the second fastener 52 fixes the first corner box 31, the span beam web 11 and the T-shaped long stringer 12 together.

[0078] Figure 3 Two second fasteners 52 are shown. Of course, the above number of second fasteners is only a preferred number, and those skilled in the art can understand based on the disclosure of this application that other suitable numbers of second fasteners (e.g., one, three, etc.) can also be used without departing from the protection scope of the claims of this application.

[0079] According to an embodiment of the present invention, an aircraft comprises a span-wise beam corner connection assembly according to any one of the above aspects.

[0080] According to the above technical solution, the aircraft of the present invention can achieve the following beneficial technical effects: it avoids the complex force of the span-wise beam corner connection area and simplifies the connection structure.

[0081] The above describes the specific embodiments of the present invention, but those skilled in the art will understand that the above specific embodiments do not constitute a limitation of the present invention. Those skilled in the art can make various modifications based on the above disclosure without exceeding the scope of the present invention.

Claims

1. A span-wise beam corner connection assembly, characterized in that: The span-wise beam corner connection assembly includes a span-wise beam web, a T-shaped long stringer, a No. 1 rib web, a No. 1 rib upper edge strip, a first corner box, and a second corner box; Wherein, at the root of the T-shaped long stringer, the web of the span beam is cut off at the corner, the first corner box and the second corner box only clamp the T-shaped long stringer between the first corner box and the second corner box, and the first corner box and the second corner box are also aligned with the outer wing long stringer joint, so as to clamp the web of the No. 1 rib and the upper edge strip of the No. 1 rib between the first corner box and the second corner box and the outer wing long stringer joint; The second corner box is not connected to the span-wise beam web; the first corner box is connected to the span-wise beam web and the T-shaped long girder at a position away from the root of the T-shaped long girder; and the span-wise extension length of the first corner box is longer than the span-wise extension length of the second corner box.

2. The span-wise beam corner connection assembly according to claim 1, characterized in that: The ratio of the spanwise extension length of the first corner box to the spanwise extension length of the second corner box is 1.30-1.60:

1.

3. The span-wise beam corner connection assembly according to claim 1, characterized in that: The first corner box is formed with a step so as to be in close contact with the T-shaped long girder at the root of the T-shaped long girder and in close contact with the web of the span-wise beam at the part of the T-shaped long girder away from the root.

4. The span-wise beam corner connection assembly according to claim 3, characterized in that: The height of the step is equal to the thickness of the web of the span-wise beam.

5. The span-wise beam corner connection assembly according to claim 1, characterized in that: The span-beam corner connection assembly also includes a T-shaped connector, which is used to connect the span-beam web and the No. 1 rib web.

6. The span-wise beam corner connection assembly according to claim 5, characterized in that: The span-beam corner connection assembly further comprises a web cutout connector, which is used to connect the cut-off edge of the span-beam web and the T-shaped connector.

7. The span-wise beam corner connection assembly according to claim 5, characterized in that: The T-shaped connector is shortened and does not cover the first corner box and / or the second corner box, thereby being directly opposite to the No. 1 rib upper edge strip.

8. An aircraft comprising the span-wise beam corner connection assembly according to any one of claims 1 to 7.

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