Aluminum alloy flexural member

Abstract

The utility model relates to an aluminum alloy flexural member which comprises a web plate, an upper flange and a lower flange, the upper flange and the lower flange are respectively fixed at two opposite ends of the web plate, and the upper flange and the lower flange are both of a combined structure. The combined structure comprises a first wing plate, a second wing plate and a connecting plate, the first wing plate and the second wing plate are perpendicularly fixed to the connecting plate and are parallel to each other, one end of the connecting plate is connected with a web, and the connecting plate and the web are located in the same plane. Compared with the prior art, the aluminum alloy flexural member has the advantages of being good in stress performance, high in bearing capacity and the like.

Description

Technical Field

[0001] This utility model relates to the field of aluminum alloy structures, and in particular to an aluminum alloy bending member. Background Technology

[0002] Traditional aluminum alloy structures primarily rely on axial loads for their components, which are connected using fasteners such as bolts. However, with the widespread application of aluminum alloy structures in complex spatial structures, and the demands of architectural design and load-bearing requirements, traditional axially loaded components can no longer meet the needs of special shapes, necessitating aluminum alloy components capable of withstanding bending.

[0003] For example, patent CN214383962U discloses a bending steel member that can prevent fatigue brittle fracture, including a compression upper flange, a tension lower flange, a web, transverse stiffeners, angle steel connectors, and high-strength bolts. The compression upper flange is connected to the web by a longitudinal force-transmitting weld. The transverse stiffeners are arranged orthogonally to the web and the compression upper flange, and are connected to the web by a structural weld. The transverse stiffeners are planed and tightened to the compression upper flange or connected by a structural weld. The angle steel connectors are symmetrically arranged on both sides of the web, and one end of the angle steel connector is connected to the web by a friction-type high-strength bolt, and the other end is connected to the tension lower flange by a friction-type high-strength bolt.

[0004] However, for H-shaped aluminum alloy bending members subjected to high stress, their cross-sectional dimensions are often large, and due to limitations in the production process, they often cannot be extruded into a single piece. Furthermore, aluminum alloy bending members require rigid joints at the splicing points, which is difficult to meet using traditional fastener connections. Additionally, the strength of aluminum alloy decreases significantly after welding. These are the main factors restricting the application of aluminum alloy bending members.

[0005] In summary, existing aluminum alloy bending components will have larger cross-sectional dimensions as the stress increases. However, components with larger cross-sectional dimensions cannot be integrally extruded, and the strength of aluminum alloy will decrease significantly after welding, which limits the application scenarios of aluminum alloy bending components. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art, such as the difficulty in integral molding due to the increased cross-section of aluminum alloy components and the decrease in strength due to welding, and to provide an aluminum alloy bending component.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] An aluminum alloy bending member includes a web, an upper flange, and a lower flange, wherein the upper flange and the lower flange are respectively fixed to opposite ends of the web, and both the upper flange and the lower flange are composite structures.

[0009] The combined structure includes a first wing plate, a second wing plate, and a connecting plate. The first wing plate and the second wing plate are both vertically fixed on the connecting plate. The first wing plate and the second wing plate are parallel to each other. One end of the connecting plate is connected to the web plate. The connecting plate and the web plate are located in the same plane.

[0010] Preferably, the web is provided with ribs, and the ribs are parallel to the first wing.

[0011] Preferably, the ribs and webs are integrally formed.

[0012] Preferably, the number of ribs is multiple.

[0013] Preferably, the ribs are distributed at equal intervals.

[0014] Preferably, the combined structure comprises a first wing plate, a second wing plate, and a connecting plate integrally formed.

[0015] Preferably, the connecting plate includes a support section and a welding section connected to each other, the first wing plate and the second wing plate are symmetrically fixed at both ends of the support section, the welding section is located on the side of the second wing plate away from the support section, and the welding section is connected to the web plate.

[0016] Preferably, the welding section is connected to the plate by friction stir welding.

[0017] Preferably, the combined structure further includes a third wing plate, which is vertically fixed to the connecting plate.

[0018] Preferably, the first wing plate, the second wing plate, and the third wing plate are distributed at equal intervals.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) In this design, both the upper and lower flanges of the bending member adopt a composite structure, with the first and second flanges vertically mounted on the connecting plate. Compared to traditional H-shaped bending members with single-layer flanges, this structure can effectively improve the bending stiffness of the bending member, meet the load-bearing requirements of aluminum alloy load-bearing members in complex spatial structure applications, and expand the application range of aluminum alloy bending members. The composite flange structure can effectively control the total height and width of the aluminum alloy bending member section, thereby meeting the requirements of existing extrusion processing technology, allowing aluminum alloy bending members to still be used when subjected to large loads.

[0021] (2) In this scheme, ribs are set on the web plate. However, compared with the vertical ribs of the transmission and the ribs connected to the upper and lower flanges, the ribs in this scheme are set horizontally, with no contact between the upper and lower flanges at both ends, and are integrally formed with the web plate. This makes the ribs both part of the load-bearing components and stiffening ribs, effectively improving the local stability of the web plate or other vertical plates. Attached Figure Description

[0022] Figure 1 A schematic diagram of the cross-sectional structure of the aluminum alloy bending member provided by this utility model;

[0023] Figure 2 A structural schematic diagram of the upper flange cross-section provided by this utility model;

[0024] Figure 3 Another structural schematic diagram of the upper flange cross section provided by this utility model;

[0025] Figure 4 A structural schematic diagram of the cross-section of the web and ribs provided in this utility model;

[0026] In the figure: 1. Web plate, 2. Upper flange, 3. Lower flange, 4. First flange, 5. Second flange, 6. Connecting plate, 7. Rib plate, 8. Third flange, 9. Support section, 10. Welded section. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0031] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides an aluminum alloy bending member, including a web 1, an upper flange 2 and a lower flange 3. The upper flange 2 and the lower flange 3 are respectively fixed to opposite ends of the web 1. Both the upper flange 2 and the lower flange 3 are composite structures.

[0035] The combined structure includes a first wing plate 4, a second wing plate 5, and a connecting plate 6. The first wing plate 4 and the second wing plate 5 are both vertically fixed on the connecting plate 6. The first wing plate 4 and the second wing plate 5 are parallel to each other. One end of the connecting plate 6 is connected to the web plate 1. The connecting plate 6 and the web plate 1 are located in the same plane.

[0036] In this design, the upper flange 2 and lower flange 3 of the bending member adopt a combined structure. The first flange 4 and the second flange 5 are vertically installed on the connecting plate 6. Compared with the traditional H-shaped bending member with a single flange, this structure can effectively improve the flange of the bending member, meet the load-bearing requirements of aluminum alloy load-bearing members in complex spatial structure application scenarios, and expand the application range of aluminum alloy bending members.

[0037] Preferred implementation methods, such as Figure 4 As shown, the web plate 1 is provided with a rib plate 7, which is parallel to the first wing plate 4. The rib plate 7 and the web plate 1 are integrally formed.

[0038] Ribs are provided on the web, but compared with the vertical ribs of the transmission that are connected to the upper and lower flanges, the ribs in this design are horizontally set, with their ends not in contact with the upper and lower flanges, and are integrally formed with the web. This makes the ribs both part of the load-bearing components and stiffening ribs, effectively improving the local stability of the web or other vertical plates.

[0039] Furthermore, there are multiple ribs 7, and each rib 7 is evenly spaced. The number of ribs 7 can be one, two, or more, and the web can be adjusted by selecting different cross-sectional types according to the stress conditions and the technological limitations of the processing equipment.

[0040] Specifically, the combined structure includes a first wing plate 4, a second wing plate 5, and a connecting plate 6 integrally formed.

[0041] Preferred implementation methods, such as Figure 2 As shown, the connecting plate 6 includes a support section and a welding section that are interconnected. The first wing plate 4 and the second wing plate 5 are symmetrically fixed at both ends of the support section. The welding section is located on the side of the second wing plate 5 away from the support section and is connected to the web plate 6. The welding section is connected to the connecting plate 6 by friction stir welding.

[0042] Unlike existing methods that directly weld the flange to the web, this embodiment incorporates a welding section on the flange's composite structure. By connecting the welding section to the web using friction stir welding, the heat-affected zone reduction factor of the aluminum alloy can be increased from the conventional 0.5 to 0.9, effectively solving the strength problem of splicing composite sections of aluminum alloy bending members.

[0043] Specifically, such as Figure 3 As shown, the combined structure also includes a third wing plate 8, which is vertically fixed to the connecting plate 6. The first wing plate 4, the second wing plate 5, and the third wing plate 8 are distributed at equal intervals.

[0044] In this embodiment, both the upper and lower flanges adopt a combined structure. Different cross-sectional types of the flanges can be selected according to the stress conditions and the process limitations of the processing equipment. In other words, the number of flanges can be flexibly adjusted, which can effectively ensure that the flange structure can adapt to a variety of complex application environments.

[0045] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An aluminum alloy bending member comprising a web (1), an upper flange (2) and a lower flange (3), the upper flange (2) and the lower flange (3) being fixed to opposite ends of the web (1), respectively, characterized in that, The upper flange (2) and the lower flange (3) are both combined structures. The combined structure comprises a first wing plate (4), a second wing plate (5) and a connecting plate (6), the first wing plate (4) and the second wing plate (5) are both fixed perpendicularly on the connecting plate (6), the first wing plate (4) and the second wing plate (5) are parallel to each other, one end of the connecting plate (6) is connected to the web plate (1), and the connecting plate (6) and the web plate (1) are located in the same plane.

2. The aluminum alloy flexural member of claim 1, wherein The web plate (1) is provided with a rib plate (7), and the rib plate (7) is parallel to the first wing plate (4).

3. The aluminum alloy bending member of claim 2, wherein The rib plate (7) is integrally formed with the web plate (1).

4. The aluminum alloy flexural member of claim 2, wherein The number of the rib plates (7) is multiple.

5. An aluminum alloy bending member according to claim 4, wherein Each rib plate (7) is distributed at equal intervals.

6. The aluminum alloy flexural member of claim 1, wherein The combined structure comprises a first wing plate (4), a second wing plate (5) and a connecting plate (6) integrally formed.

7. The aluminum alloy bending member of claim 1, wherein The connecting plate (6) comprises a support section (9) and a welding section (10) connected to each other, the first wing plate (4) and the second wing plate (5) are symmetrically fixed at two ends of the support section, the welding section is located on the side of the second wing plate (5) away from the support section, and the welding section is connected to the connecting plate (6).

8. The aluminum alloy bending member of claim 7, wherein The welding section (10) is connected to the connecting plate (6) through friction stir welding.

9. The aluminum alloy bending member of claim 1, wherein The combined structure further comprises a third wing plate (8), and the third wing plate (8) is fixed perpendicularly on the connecting plate (6).

10. An aluminum alloy bending member according to claim 9, wherein The first wing plate (4), the second wing plate (5) and the third wing plate (8) are distributed at equal intervals.

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