Composite thin-walled load bearing structure

Abstract

The utility model relates to the field of cabin body structure, concretely relates to a kind of composite material thin wall bearing structure.The thin wall bearing structure includes: first wallboard, including first core material, second core material and first reinforcing beam;Second wallboard is arranged below the first wallboard;The second wallboard includes the third core material corresponding with the first core material, the fourth core material corresponding with the second core material and the second reinforcing beam corresponding with the first reinforcing beam;Outer skin is covered in the bottom and circumferential outside of the first wallboard and the second wallboard;Intermediate skin is arranged between the first wallboard and the second wallboard;Inner skin is covered above the first wallboard.The utility model relates to a kind of composite material thin wall bearing structure to form double sandwich structure, and set first reinforcing beam and second reinforcing beam, can reduce wallboard thickness on the basis of satisfying cabin body structure strength, improve cabin use space and mobility.

Description

Technical Field

[0001] This utility model relates to the field of cabin structure, specifically to a composite material thin-walled load-bearing structure. Background Technology

[0002] Since the early 1970s, my country has been conducting research on modular housing. After 50 years, the technology has become more sophisticated and its application more widespread. Classified by function, modular housing units can be divided into electronic, mechanical, power supply, and other types. Based on structure, they can be categorized into frame modular housing units, large-panel modular housing units, and one-piece molded composite material modular housing units. The structural layers of a conventional composite cabin utilize a high-strength carbon fiber composite PVC sandwich structure, with inner and outer skins encasing the composite skeleton and integrally cast using epoxy resin as the matrix. The inner and outer skins are approximately 2mm thick. The composite skeleton is treated differently depending on the stress pattern, and skeleton forms include rectangular beams, I-beams, etc. (e.g., Figure 1 and Figure 2 (As shown). However, while meeting the load-bearing requirements of the bulkhead, the thickness of this structural layer still needs to be maintained between 45mm and 50mm, resulting in poor space utilization and mobility of the container.

[0003] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0004] To improve or solve the technical problem of poor wall panel structure design in the prior art, this utility model provides a composite material thin-walled load-bearing structure. The thin-walled load-bearing structure includes: a first wall panel, comprising a first core material, a second core material arranged side-by-side with the first core material, and a first reinforcing beam arranged between the first core material and the second core material; a second wall panel, arranged below the first wall panel; the second wall panel includes a third core material corresponding to the first core material, a fourth core material corresponding to the second core material, and a second reinforcing beam corresponding to the first reinforcing beam; an outer skin covering the bottom and circumferential outer side of the first wall panel and the second wall panel; a middle skin arranged between the first wall panel and the second wall panel; and an inner skin covering the top of the first wall panel.

[0005] This invention discloses a composite material thin-walled load-bearing structure comprising a first wall panel, a second wall panel, an outer skin, a middle skin, and an inner skin. The outer and inner skins cover the first and second wall panels, while the middle skin separates the first and second wall panels, forming a double sandwich structure. The first wall panel includes a first core material, a second core material, and a first reinforcing beam, ensuring the structural strength of the first wall panel. The second wall panel includes a third core material, a fourth core material, and a second reinforcing beam, ensuring the structural strength of the second wall panel. The first and second reinforcing beams correspond to each other, enhancing the structural strength of the thin-walled load-bearing structure. Through the above arrangement, this invention provides a composite material thin-walled load-bearing structure forming a double sandwich structure. The inclusion of the first and second reinforcing beams allows for a reduction in wall panel thickness and weight while maintaining structural strength, thereby improving usable space and maneuverability within the cabin.

[0006] Furthermore, steel plates are pre-embedded in the first reinforcing beam. Through this arrangement, the steel plates can increase the stress strength of individual mounting points, thereby ensuring the structural stability of the cabin.

[0007] Furthermore, a first receiving groove is formed on the first reinforcing beam, and the steel plate is arranged in the receiving groove and close to the intermediate skin; a fifth core material is provided at the end of the first receiving groove away from the intermediate skin. With the above arrangement, the steel plate and the fifth core material are pre-embedded in the first reinforcing beam, which can avoid perforation and water leakage, provide excellent sealing performance, and extend the service life of the wall panel.

[0008] Furthermore, a bakelite board is pre-embedded in the second reinforcing beam, and the bakelite board corresponds to the steel plate. This arrangement, with the bakelite board corresponding to the steel plate, further enhances the load-bearing strength of the installation fixing point.

[0009] Furthermore, a fiber cloth is wrapped around the outer side of the bakelite board. This arrangement allows the fiber cloth to restrain the bakelite board, prevent deformation, and enhance the connection stability between the bakelite board and the second reinforcing beam.

[0010] Furthermore, the fiber cloth is covered with two layers.

[0011] Furthermore, a flange is formed on the outer skin, and the flange covers the inner skin. This configuration allows the flange to cover the inner skin, enhancing the connection stability between the inner and outer skins. Attached Figure Description

[0012] The preferred embodiments of this utility model are described below with reference to the accompanying drawings, in which: Figure 1 This is a schematic diagram of a wall panel with rectangular beams in the prior art; Figure 2This is a schematic diagram of a wall panel with an I-beam structure in the prior art; Figure 3 This is a schematic diagram of an embodiment of a composite material thin-walled load-bearing structure of the present invention; Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure at point BB.

[0013] List of reference numerals in the attached drawings: 1. First wall panel; 11. First core material; 12. Second core material; 13. First reinforcing beam; 14. Steel plate; 15. Fifth core material; 2. Second wall panel; 21. Third core material; 22. Fourth core material; 23. Second reinforcing beam; 24. Bakelite board; 3. Outer skin; 4. Intermediate skin; 5. Inner skin. Detailed Implementation

[0014] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0015] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0017] To improve or solve the technical problem of poor wall panel structure design in the prior art, this utility model provides a composite material thin-walled load-bearing structure. The thin-walled load-bearing structure includes: a first wall panel 1, comprising a first core material 11, a second core material 12 arranged side-by-side with the first core material 11, and a first reinforcing beam 13 arranged between the first core material 11 and the second core material 12; a second wall panel 2, arranged below the first wall panel 1; the second wall panel 2 includes a third core material 21 corresponding to the first core material 11, a fourth core material 22 corresponding to the second core material 12, and a second reinforcing beam 23 corresponding to the first reinforcing beam 13; an outer skin 3, covering the bottom and circumferential outer sides of the first wall panel 1 and the second wall panel 2; a middle skin 4, arranged between the first wall panel 1 and the second wall panel 2; and an inner skin 5, covering the top of the first wall panel 1.

[0018] Figure 3 This is a schematic diagram of an embodiment of a composite material thin-walled load-bearing structure according to the present invention. Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure at point AA. (See diagram below.) Figure 3 and Figure 4 As shown, the composite material thin-walled load-bearing structure of this utility model includes a first wall panel 1, a second wall panel 2, an outer skin 3, a middle skin 4, and an inner skin 5.

[0019] Figure 5 yes Figure 3 A schematic diagram of the cross-sectional structure at point BB. (See diagram below.) Figure 3 , Figure 4 and Figure 5As shown, in one or more embodiments, the first wall panel 1 includes a first core material 11, a second core material 12, and a first reinforcing beam 13, with the first reinforcing beam 13 arranged between the first core material 11 and the second core material 12. Specifically, the first core material 11, the second core material 12, and the first reinforcing beam 13 have the same thickness. For example, the thickness of the first core material 11, the second core material 12, and the first reinforcing beam 13 is 12 mm. Alternatively, the thickness of the first core material 11, the second core material 12, and the first reinforcing beam 13 can also be set to other suitable thicknesses such as 11 mm or 13 mm. Further, a steel plate 14 is pre-embedded in the first reinforcing beam 13. Specifically, a first receiving groove matching the steel plate 14 is opened at the middle position of the first reinforcing beam 13, and the steel plate 14 is arranged in the first receiving groove. Further, a fifth core material 15 is also provided in the first receiving groove. Specifically, the steel plate 14 is close to the second wall panel 2, and the fifth core material 15 is arranged above the steel plate 14. For example, the steel plate 14 is 6 mm thick, and the fifth core material 15 is 5 mm thick. The first receiving groove is a square groove with a length and width of 40 mm, and both the steel plate 14 and the fifth core material 15 are 38 mm square plates. Further, the steel plate 14 is covered with fiber cloth. Specifically, the steel plate 14 is sanded and cleaned with alcohol; after the steel plate 14 dries, it is wrapped with two layers of fiber cloth, and then placed into the first receiving groove; the fifth core material 15 is placed on top of the steel plate 14, and then the first reinforcing beam 13, together with the steel plate 14 and the fifth core material 15 in the groove, is considered as the first reinforcing beam 13, and its outer side is wrapped with two layers of fiber cloth. The fifth core material 15 is made of the same material as the first reinforcing beam 13.

[0020] See also Figure 3 , Figure 4 and Figure 5In one or more embodiments, the second wall panel 2 is arranged below the first wall panel 1. The second wall panel 2 includes a third core material 21, a fourth core material 22, and a second reinforcing beam 23. The third core material 21 is arranged below the first core material 11, the fourth core material 22 is arranged below the second core material 12, and the second reinforcing beam 23 is arranged below the first reinforcing beam 13. Specifically, the thickness of the second wall panel 2 is the same as the thickness of the first wall panel 1. Alternatively, the thickness of the second wall panel 2 can be different from the thickness of the first wall panel 1, for example, the thickness of the first wall panel 1 is 12 mm, and the thickness of the second wall panel 2 is 13 mm, 11 mm, or other suitable thicknesses. Further, a bakelite board 24 is pre-embedded in the second reinforcing beam 23, and the bakelite board 24 corresponds to the steel plate 14. Specifically, a second receiving groove is opened in the middle position of the second reinforcing beam 23, and the second receiving groove matches the bakelite board 24. Further, a fiber cloth is wrapped around the outside of the bakelite board 24. Specifically, the bakelite board 24 is sanded and cleaned with alcohol, then wrapped with two layers of fiber cloth. The wrapped bakelite board 24 is then placed into the second receiving groove. The first and second receiving grooves form mounting points. M6 threads are tapped at the mounting points, which can withstand a tensile force ≥480kg, exceeding industry requirements.

[0021] See also Figure 3 , Figure 4 and Figure 5In one or more embodiments, the outer skin 3 covers the bottom and circumferentially outer sides of the first wall panel 1 and the second wall panel 2. Specifically, flanges are formed on the outer skin 3 to connect with the inner skin 5. The width of the outer skin 3 is the sum of the width of the first wall panel 1, the thickness of the two first wall panels 1, the thickness of the two second wall panels 2, and the width of the two flanges; the length of the outer skin 3 is the sum of the length of the first wall panel 1, the thickness of the two first wall panels 1, the thickness of the two second wall panels 2, and the width of the two flanges. Further, the dimensions of the intermediate skin 4 are the same as the length and width of the first wall panel 1, and the dimensions of the inner skin 5 are the same as the dimensions of the intermediate skin 4. For example, the thickness of the outer skin 3, the inner skin 5, and the intermediate skin 4 is 2 mm, and the thickness of the entire thin-walled load-bearing structure is 30 mm. After the outer skin 3 is uniformly laid out, the third core material 21, the second reinforcing beam 23, and the fourth core material 22 are installed. The third core material 21 and the fourth core material 22 are laid symmetrically around the center of the skin. Then, the middle skin 4 is laid out, followed by the first core material 11, the first reinforcing beam 13, and the second core material 12. The upper and lower core materials and the reinforcing beams are aligned around the perimeter. Finally, the inner skin 5 is laid out on the first wall panel 1, aligned with the perimeter of the first wall panel 1. The flanges on the outer skin 3 are folded over the inner skin 5 to complete the laying. After the laying is completed, the release cloth, guide net, and vacuum bag are laid out. Under the condition of ensuring airtightness, the resin is injected under vacuum and then fixed according to the resin fixation process at the specified time and temperature. Then, the mold is removed after natural cooling to 40°C. After demolding, the desired product is obtained after post-processing, including sanding off burrs and flash.

[0022] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A composite material thin-walled load-bearing structure, characterized in that, include: The first wall panel (1) includes a first core material (11), a second core material (12) arranged side by side with the first core material (11), and a first reinforcing beam (13) arranged between the first core material (11) and the second core material (12); The second wall panel (2) is arranged below the first wall panel (1); the second wall panel (2) includes a third core material (21) corresponding to the first core material (11), a fourth core material (22) corresponding to the second core material (12), and a second reinforcing beam (23) corresponding to the first reinforcing beam (13); The outer skin (3) covers the bottom and circumferential outer side of the first wall panel (1) and the second wall panel (2); The intermediate skin (4) is arranged between the first wall panel (1) and the second wall panel (2); The inner skin (5) covers the first wall panel (1).

2. The composite material thin-walled load-bearing structure according to claim 1, characterized in that, A steel plate (14) is pre-embedded on the first reinforcing beam (13).

3. The composite material thin-walled load-bearing structure according to claim 2, characterized in that, A first receiving groove is provided on the first reinforcing beam (13), and the steel plate (14) is arranged in the receiving groove and close to the intermediate skin (4); a fifth core material (15) is provided at the end of the first receiving groove away from the intermediate skin (4).

4. A composite material thin-walled load-bearing structure according to claim 2, characterized in that, A bakelite board (24) is pre-embedded on the second reinforcing beam (23), and the bakelite board (24) corresponds to the steel plate (14).

5. A composite material thin-walled load-bearing structure according to claim 4, characterized in that, The outer side of the bakelite board (24) is covered with a fiber cloth.

6. A composite material thin-walled load-bearing structure according to claim 5, characterized in that, The fiber cloth is covered with two layers.

7. A composite material thin-walled load-bearing structure according to claim 1, characterized in that, A flange is formed on the outer skin (3), and the flange covers the inner skin (5).

Images