Ribbed wallboard assembly

Abstract

The utility model relates to the technical field of aviation, and discloses a stiffened wallboard assembly which comprises a skin and stiffened structures, the skin is provided with a large end and a small end in the length direction of the skin, the demolding direction of the stiffened wallboard assembly is from the large end to the small end in the length direction of the skin, the stiffened structures are all arranged on the inner wall face of the skin, and each stiffened structure comprises a rib. The end points of the ribs in the length direction are gathered to the same point, first inverted tips are arranged at the ends, facing the small ends, of the ribs, and the inverted tip faces of the first inverted tips are parallel to the demolding direction. The end points of the multiple ribs in the length direction are designed to be gathered to the same point in the demolding direction of the stiffened wall plate assembly, so that the axial faces of the ribs are parallel to the demolding direction, and it is guaranteed that the demolding direction of the skin is consistent with the demolding direction of the stiffened structure. The rib at the small end of the stiffened wallboard assembly is provided with the first inverted pin, and the inverted pin surface of the first inverted pin is parallel to the demolding direction, so that the end part of the rib is prevented from abutting against and interfering with the inner wall surface of the groove of the mold in the demolding direction.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation technology field especially relates to a stiffened wallboard subassembly. BACKGROUND

[0002] The composite material part structure is complex, especially when the rib and double curved structure, integral cylinder segment and other features on the integral co-cured stiffened wallboard structure are compounded, the demolding direction has certain limitation, the rib is extremely easy to produce interference with the mould when demolding along the specified direction, thereby causing serious damage to the part when demolding. In the prior art, in order to solve the interference problem when demolding in a specified direction, a combined mould is usually used for curing forming and demolding, but this often leads to complex mould tool structure, which is not conducive to improving production efficiency.

[0003] Therefore, there is an urgent need for a stiffened wallboard subassembly to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of stiffened wallboard subassemblies, can solve the problem of ribbed part interference when demolding along specified direction, can guarantee demolding quality, improve demolding efficiency.

[0005] As above conception, the technical scheme adopted by the utility model is as follows:

[0006] Provide a kind of stiffened wallboard subassembly, comprising:

[0007] Skin, the skin has large end and small end along the length direction of itself, the demolding direction of the stiffened wallboard subassembly is the length direction of the skin from the large end to the small end;

[0008] Rib structure has multiple, multiple rib structure is all set to the inner wall surface of the skin, the rib structure includes rib, the length direction endpoint of multiple ribs is all converged to the same point, the first end of the rib towards the small end is set first inverted tip, the inverted tip surface of the first inverted tip is parallel to the demolding direction.

[0009] Optionally, the skin is cylindrical structure, multiple ribs are evenly spaced along the circumference of the cylindrical structure, and the length direction endpoint of multiple ribs is all converged to the same point on the central axis of the cylindrical structure.

[0010] Optionally, the rib structure includes the rib and the protruding part protrudingly arranged perpendicular to the extension direction of the rib, the second inverted tip of the protruding part is arranged on the side of the rib in the extension direction and towards the small end, and the inverted tip surface of the second inverted tip is parallel to the demolding direction.

[0011] Optionally, the stiffened structure is a hat stringer, the protrusion includes a first ear, the first ear is located at the first end, and the first tab and the second tab of the first ear are smoothly connected.

[0012] Optionally, the maximum height of the rib in the thickness direction of the skin is H1, the maximum height of the first ear in the thickness direction of the skin is H2, H1≥H2, and 35mm≥H1≥25mm.

[0013] Optionally, the protrusion further includes at least one second ear, at least one second ear is arranged on the side of the first ear away from the first end, and the second ear is arranged in a spaced manner with the first ear.

[0014] Optionally, the protrusion has two rows, and the two rows of protrusions are arranged in a spaced manner perpendicular to the length direction of the rib.

[0015] Optionally, the protrusion has two rows, and each row of protrusions includes one first ear and a plurality of second ears.

[0016] Optionally, the skin, the rib and the protrusion are integrally cured and formed, and the connection corner of the protrusion and the rib is smoothly connected.

[0017] The beneficial effects of the utility model are:

[0018] The utility model discloses a reinforced wallboard assembly, which comprises a skin and a reinforced structure, the skin has a large end and a small end along the length direction of the skin, the demolding direction of the reinforced wallboard assembly is from the large end to the small end along the length direction of the skin, the reinforced structure has a plurality of reinforced structures, the plurality of reinforced structures are arranged on the inner wall surface of the skin, the reinforced structure comprises a rib, the end points of the plurality of ribs along the length direction are gathered to the same point, one end of the rib towards the small end is provided with a first inverted pin, and the inverted pin surface of the first inverted pin is parallel to the demolding direction. The skin of the reinforced wallboard assembly has the reinforced structure, which makes the rib easy to interfere with the mold when the reinforced wallboard assembly is cured and formed and demolded along the specified direction, thereby causing serious damage to the reinforced wallboard assembly during demolding. The utility model discloses a reinforced wallboard assembly, which comprises a skin and a reinforced structure, the skin has a large end and a small end along the length direction of the skin, the demolding direction of the reinforced wallboard assembly is from the large end to the small end along the length direction of the skin, the reinforced structure has a plurality of reinforced structures, the plurality of reinforced structures are arranged on the inner wall surface of the skin, the reinforced structure comprises a rib, the end points of the plurality of ribs along the length direction are gathered to the same point, one end of the rib towards the small end is provided with a first inverted pin, and the inverted pin surface of the first inverted pin is parallel to the demolding direction. The demolding direction of the skin is consistent with the demolding direction of the reinforced structure, and interference between the two during demolding is avoided. In addition, the reinforced structure protrudes from the skin in the thickness direction of the skin, and during demolding, the reinforced wallboard assembly needs to be moved from the large end of the skin to the small end of the skin. The rib located at the small end of the reinforced wallboard assembly is provided with the first inverted pin, and the inverted pin surface of the first inverted pin is parallel to the demolding direction, thereby avoiding interference between the end of the rib and the inner wall surface of the groove of the mold in the demolding direction. That is, the reinforced wallboard assembly provided by the utility model can solve the problem of interference between the part and the mold during demolding of the reinforced wallboard assembly along the specified direction, ensure the demolding quality, and improve the demolding efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the reinforced wallboard assembly provided by the utility model embodiment;

[0020] Figure 2 is a partial structural schematic diagram of the reinforced wallboard assembly provided by the utility model embodiment;

[0021] Figure 3 is an extension direction schematic diagram of the reinforced structure provided by the utility model embodiment;

[0022] Figure 4 is a structural schematic diagram of the reinforced structure provided by the utility model embodiment;

[0023] Figure 5 is Figure 4 is an enlarged view of position A in FIG.

[0024] Figure 6 is Figure 4 is an enlarged view of position B in FIG.

[0025] in the figure:

[0026] 1, skin;

[0027] 2. Reinforced structure; 21. Rib; 211. First tip; 22. Protrusion; 220. Second tip; 221. First ear; 222. Second ear. DETAILED DESCRIPTION

[0028] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, but not limit the utility model. In addition, it needs to be explained that only the parts related to the utility model are shown in the drawings for the convenience of description, not all.

[0029] In the description of the utility model, unless explicitly defined and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0030] In the utility model, unless explicitly defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0031] In the description of the embodiment, the terms "upper", "lower", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation of the utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

[0032] The technical scheme of the utility model will be further explained below in combination with the drawings and through specific embodiments.

[0033] As Figures 1 to 6As shown, this embodiment provides a stiffened wall panel assembly, including a skin 1 and stiffening structures 2. The skin 1 has a large end and a small end along its length. The demolding direction of the stiffened wall panel assembly is from the large end to the small end along the length of the skin 1. Multiple stiffening structures 2 are provided on the inner wall surface of the skin 1. Each stiffening structure 2 includes ribs 21, and the endpoints of the multiple ribs 21 converge at the same point along their length. A first chamfer 211 is provided at the end of the rib 21 facing the small end, and the chamfered surface of the first chamfer 211 is parallel to the demolding direction. The presence of stiffening structures 2 on the skin 1 of the stiffened wall panel assembly makes it easy for the ribs 21 to interfere with the mold during demolding in a specified direction, thus causing serious damage to the stiffened wall panel assembly during demolding. The stiffened panel assembly provided in this embodiment analyzes the central axial surface of the stiffening structure 2 to design multiple ribs 21 whose endpoints in the length direction converge at the same point in the demolding direction of the stiffened panel assembly. This ensures that the axial surface of the ribs 21 is parallel to the demolding direction, guaranteeing that the demolding direction of the skin 1 is consistent with that of the stiffening structure 2, thus avoiding interference during demolding. Furthermore, since the stiffening structure 2 protrudes from the skin 1 in the thickness direction, and during demolding, the stiffened panel assembly needs to be moved from the large end to the small end of the skin 1, a first chamfer 211 is provided on the ribs 21 located at the small end of the stiffened panel assembly, with the chamfered surface of the first chamfer 211 parallel to the demolding direction. This prevents the end of the rib 21 from interfering with the inner wall of the mold groove in the demolding direction. In other words, the stiffened panel assembly provided in this embodiment solves the problem of interference between the part and the mold during demolding in a specified direction, ensuring demolding quality and improving demolding efficiency.

[0034] like Figure 1 As shown, in this embodiment, the stiffened panel assembly is cylindrical, meaning the skin 1 is a cylindrical structure. Multiple stiffeners 21 are evenly spaced along the circumference of the cylindrical structure on the inner wall of the skin 1. The endpoints of the length directions of the multiple stiffeners 21 all converge at the same point on the central axis of the cylindrical structure. When both the stiffened panel assembly and the mold are cylindrical structures, and the cylindrical structure has a large end and a small end, the stiffened panel assembly must be demolded from the large end to the small end of the cylindrical structure. The fact that the endpoints of the length directions of the multiple stiffeners 21 all converge at the same point on the central axis of the cylindrical structure ensures that the demolding direction of the skin 1 is consistent with the demolding direction of the stiffened structure 2, avoiding interference during demolding.

[0035] In other embodiments, if the stiffened panel assembly is a constricted C-shaped structure, that is, the skin 1 is a constricted C-shaped structure and the C-shaped structure has a large end and a small end, then the endpoints of the length direction of the multiple ribs 21 provided on the inner wall surface of the C-shaped structure converge to the same point, and this point may not be located on the central axis of the C-shaped structure.

[0036] In specific implementation, the stiffening structure 2 can be a hat-shaped stringer or a T-shaped stiffening. The stiffening structure 2 includes stiffeners 21 and protrusions 22 that protrude in the direction of extension of stiffeners 21. In order to avoid interference between the protrusions 22 and the mold during demolding, a second tail 220 is provided on the side of the protrusions 22 facing the small end in the direction of extension of stiffeners 21. The tail surface of the second tail 220 is parallel to the demolding direction.

[0037] Optionally, the stiffening structure 2 is a hat-shaped stringer, which includes connected ribs 21 and protrusions 22. In this embodiment, the hat-shaped stringer is a hollow structure. By providing the protrusions 22, the contact area between the stiffening structure 2 and the skin 1 can be increased, thereby ensuring the connection stability between the stiffening structure 2 and the skin 1. In addition, the protrusions 22 include a first lug 221, which is located at the first end. The connection between the first bevel 211 and the second bevel 220 of the first lug is smoothly transitioned. When there is a smooth transition between the two bevel surfaces, the resistance encountered during demolding is smaller, which reduces the risk of jamming. A smooth transition also helps to ensure that the demolding force is evenly distributed on the entire part, avoiding local stress concentration and reducing the possibility of part deformation.

[0038] Optionally, the maximum height of the stiffener 21 in the thickness direction of the skin 1 is H1, and the maximum height of the first lug 221 in the thickness direction of the skin 1 is H2, where H1 ≥ H2 and 35mm ≥ H1 ≥ 25mm. Increasing the height of the cap-shaped stringer will significantly increase the moment of inertia of its section. A higher moment of inertia means stronger bending resistance and can also distribute the load more evenly on a larger section, reducing local stress concentration and thus improving the overall structural strength.

[0039] Furthermore, the protrusion 22 also includes at least one second lug 222, which is disposed on the side of the first lug 221 opposite to the first end, and the second lug 222 is spaced apart from the first lug 221. The stiffening structure 2 has a first lug 221 and at least one second lug 222. The number of second lugs 222 can be adjusted according to the length of the stiffener 21 in the extension direction. Multiple second lugs 222 can distribute the force to a larger area, reduce local stress concentration, and improve the bending resistance of the entire cap-shaped truss.

[0040] Optionally, the protrusions 22 have two rows, which are arranged opposite to each other in the extension direction of the vertical ribs 21. The symmetrical arrangement of the two rows of protrusions 22 ensures that the load is evenly distributed on both sides of the cap-shaped stringer, which helps to balance bending and torsional moments, making the cap-shaped stringer more stable and less prone to deformation when subjected to multi-directional loads.

[0041] In practice, the protrusions 22 of the hat-shaped stringer generally have two rows, and each row of protrusions 22 includes a first lug 221 and multiple second lugs 222 to ensure the bending resistance of the entire hat-shaped stringer.

[0042] Optionally, the skin 1, rib 21, and protrusion 22 are integrally cured and molded, with a smooth transition at the corner where the protrusion 22 connects to the rib 21. In a specific implementation, the preforms of the skin 1, rib 21, and protrusion 22 are placed in a mold, and the mold is cured under set temperature and pressure conditions to achieve a smooth transition between the connection points of the skin 1, rib 21, and protrusion 22.

[0043] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A reinforced wall panel assembly, characterized in that, include: Skin (1), the skin (1) has a large end and a small end along its own length direction, and the demolding direction of the stiffened wall panel assembly is from the large end to the small end along the length direction of the skin (1); The reinforcing structure (2) has multiple reinforcing structures (2) and each of the multiple reinforcing structures (2) is disposed on the inner wall surface of the skin (1). The reinforcing structure (2) includes ribs (21). The endpoints of the multiple ribs (21) in the length direction converge to the same point. The first end of the rib (21) facing the small end is provided with a first chamfer (211). The chamfer surface of the first chamfer (211) is parallel to the demolding direction.

2. The reinforced wall panel assembly according to claim 1, characterized in that, The skin (1) is a cylindrical structure, and a plurality of the ribs (21) are evenly spaced along the circumference of the cylindrical structure. The endpoints of the plurality of ribs (21) in the length direction all converge at the same point on the central axis of the cylindrical structure.

3. The reinforced wall panel assembly according to claim 1, characterized in that, The reinforcing structure (2) includes the rib (21) and a protrusion (22) that protrudes perpendicular to the extension direction of the rib (21). The protrusion (22) has a second taper (220) on the side of the rib (21) facing the small end in the extension direction of the rib (21). The taper surface of the second taper (220) is parallel to the demolding direction.

4. The reinforced wall panel assembly according to claim 3, characterized in that, The stiffening structure (2) is a hat-shaped stringer, and the protrusion (22) includes a first ear piece (221), which is located at the first end. The connection between the first tip (211) and the second tip (220) of the first ear piece (221) is smoothly transitioned.

5. The reinforced wall panel assembly according to claim 4, characterized in that, The maximum height of the rib (21) in the thickness direction of the skin (1) is H1, and the maximum height of the first ear piece (221) in the thickness direction of the skin (1) is H2, where H1≥H2 and 35mm≥H1≥25mm.

6. The reinforced wall panel assembly according to claim 5, characterized in that, The protrusion (22) further includes at least one second ear piece (222), which is disposed on the side of the first ear piece (221) away from the first end, and the second ear piece (222) is spaced apart from the first ear piece (221).

7. The reinforced wall panel assembly according to claim 5, characterized in that, The protrusions (22) have two rows, which are arranged opposite each other in the length direction perpendicular to the ribs (21).

8. The reinforced wall panel assembly according to claim 6, characterized in that, The protrusion (22) has two rows, each row of the protrusion (22) including one first ear piece (221) and a plurality of second ear pieces (222).

9. The reinforced wall panel assembly according to claim 3, characterized in that, The skin (1), the ribs (21) and the protrusion (22) are integrally solidified and molded, and the corner where the protrusion (22) connects to the ribs (21) is smoothly transitioned.

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