Light carbon fiber cabinet structure and assembly method

Abstract

The invention relates to the technical field of manufacturing of carbon fiber composite material structural parts, and provides a light carbon fiber cabinet structure and an assembling method, the light carbon fiber cabinet structure comprises a top plate, a bottom plate, a left side plate, a right side plate, a front side plate, a reinforcing frame and an electric cabinet support which are all made of carbon fiber composite materials; the front, the rear, the left and the right of the top plate are respectively connected with the top ends of the front side plate, the reinforcing frame, the left side plate and the right side plate, the front, the rear, the left and the right of the bottom plate are respectively connected with the bottom ends of the front side plate, the reinforcing frame, the left side plate and the right side plate, and the electric cabinet support is arranged at the left upper corner in the frame type structure. According to the lightweight carbon fiber cabinet, the lightweight and universal requirements of the airborne cabinet are met, meanwhile, the requirements for strength and rigidity are met, rapid assembly and batch production can be achieved, the functionality of the lightweight carbon fiber cabinet for storing and installing airborne equipment is successfully achieved, and the uniformity of the structural integrity of the whole machine is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of manufacturing technology of carbon fiber composite structural components, specifically to a lightweight carbon fiber cabinet structure and assembly method. Background Technology

[0002] Airborne equipment racks are a crucial component of the modular installation of airborne equipment. By mounting various devices on a rack to form a single installation module, rapid modular installation of airborne equipment becomes possible. Traditional racks primarily utilize metal structures, resulting in a bulky overall design that hinders overall aircraft weight reduction and presents installation difficulties. Composite materials, with their high specific modulus, specific strength, impact resistance, seismic resistance, and strong structural design flexibility, can achieve lightweighting while fulfilling structural functions. Therefore, in aerospace, weaponry, and other fields, traditional metal structural components are gradually being replaced by composite material structural components.

[0003] Based on this, it is desired to obtain a lightweight carbon fiber cabinet structure and manufacturing process to achieve the goal of lightweight carbon fiber cabinets with high versatility, good consistency and high assembly efficiency. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide a lightweight carbon fiber cabinet structure and assembly method.

[0005] According to the present invention, a lightweight carbon fiber cabinet structure includes a top plate, a bottom plate, a left side plate, a right side plate, a front side plate, a reinforcing frame, and an electrical control box bracket, all made of carbon fiber composite materials. The top plate is connected to the top of the front side plate, the reinforcing frame, the left side plate, and the right side plate at the front, back, left, and right sides, respectively. The bottom plate is connected to the bottom of the front side plate, the reinforcing frame, the left side plate, and the right side plate at the front, back, left, and right sides, respectively, so that the top plate, bottom plate, left side plate, right side plate, front side plate, and reinforcing frame together form a frame structure. The electrical control box bracket is located in the upper left corner inside the frame structure.

[0006] Preferably, the top plate, bottom plate, left side plate, right side plate, front side plate, and reinforcing frame are all equipped with metal embedded parts for assembling and connecting external equipment.

[0007] Preferably, the entire outer surface of the frame structure needs to be coated with a protective varnish.

[0008] Preferably, the top plate, bottom plate, left side plate, right side plate, front side plate, reinforcing frame, and electrical control box bracket are all connected and assembled by metal parts.

[0009] Preferably, the frame structure is externally configured with an integrated frame connector; The top of the frame structure is equipped with lifting lugs; The integrated frame connector and the lifting lug are both metal connectors.

[0010] Preferably, it also includes a sealing strip, a wear-resistant plate, a bottom corner joint, and a corner piece assembly; The bottom corner joints and corner plate assemblies are all metal connectors used to connect adjacent carbon fiber plates; The wear-resistant plate is disposed on the base plate, and the sealing strip is disposed between two adjacent carbon fiber plates.

[0011] Preferably, the bottom corner bracket is made of 6061-T6 grade aluminum alloy and is integrally machined and black anodized; the corner piece assembly is made of 6063-T5L type aluminum corner piece and is integrally machined. The wear-resistant plate is integrally processed using molybdenum disulfide material, and the sealing strip is processed using anti-mildew silicone rubber plate HK6140F.

[0012] An assembly method for a lightweight carbon fiber cabinet structure according to the present invention includes the following steps: S1: The top plate, bottom plate, left side plate, right side plate, front side plate, reinforcing frame, and electrical control box bracket are formed by carbon fiber prepreg layer curing and prefabricated embedded parts installation holes are machined. The integrated frame connector, lifting lug, bottom lug, corner piece assembly, and metal embedded parts are machined from a single blank. S2: Grind the metal embedded parts and the surfaces of each carbon fiber plate to be bonded, then use adhesive to bond them, ensuring sufficient adhesive at the bonding location, and clean up any excess adhesive residue. S3: Assemble the top plate, bottom plate, left side plate, right side plate, front side plate, reinforcing frame, electrical control box bracket, lifting lugs, bottom lugs, corner brackets, corner plate assemblies, wear-resistant plates, and sealing strips by adhesive bonding and / or screwing. S4: After the bonding is completed, protect the unpainted parts and paint the rest of the parts.

[0013] S5: Inspect the product appearance; S6: Use the inspection template to check the dimensions of the external connection interfaces on each side.

[0014] Preferably, in S3, the adhesive bonding is rich-adhesive extrusion bonding, the bolts are countersunk screws, and the screws are screwed together with adhesive.

[0015] Preferably, the top plate, bottom plate, left side plate, right side plate, front side plate, reinforcing frame, and electrical control box bracket are all manufactured in the following manner: The first and last layers use T300 grade plain weave carbon cloth, and the inner layer uses T700 grade unidirectional prepreg quasi-isotropic layup with layup angles of 0°, ±30°, ±45°, ±60° and 90°.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. All plates in this invention are made of carbon fiber composite material, which realizes the requirements of lightweight and universal airborne cabinet, while meeting the strength and stiffness requirements under operating conditions. Furthermore, due to the design of the process route, the cabinet can also achieve the requirements of rapid assembly and mass production, successfully solving the problem of unifying the functionality of lightweight carbon fiber cabinet for storing and installing airborne equipment as well as the integrity of the overall structure.

[0017] 2. The lightweight carbon fiber cabinet in this invention adopts a rapid manufacturing process. All composite structures are made of the same material and can be formed in multiple batches in a hot autoclave at one time, which greatly reduces the molding time of structural components and is conducive to the modular production of products. It adopts a lightweight design with an overall theoretical weight of 34kg, and can maintain structural stability under various aircraft operating conditions through finite element simulation.

[0018] 3. In terms of structural assembly, the present invention adopts a double connection method with glue and screws. The glued surface is rich in glue to block the leakage path. The screw connection adopts a countersunk sealing glue connection, which improves the resistance of the glued surface to internal pressure and ensures the overall connection strength and sealing performance.

[0019] 4. The method of connecting metal corner pieces and carbon fiber plates in this invention can significantly shorten the assembly time. After the components are assembled, the overall assembly time can be reduced to 2 sets / 2 people / day.

[0020] 5. The bottom of the frame structure in this invention is made of molybdenum disulfide wear-resistant plate, which can reduce the wear of the main body and extend its service life during assembly and transportation. Attached Figure Description

[0021] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the server rack; Figure 2 This is a structural schematic diagram of the top slab; Figure 3 This is a schematic diagram of the base plate structure; Figure 4 This is a structural diagram of the right side panel; Figure 5 This is a structural diagram of the left side panel; Figure 6 This is a structural diagram of the front panel; Figure 7 A structural diagram of the reinforcing frame; Figure 8 This is a schematic diagram of the electrical control box bracket.

[0022] The diagram shows: Top plate 1; Base plate 2; Left side panel 3; Right side panel 4; Front side panel 5; Reinforced frame 6; 7. Electrical control box bracket; Bottom corner fits 8; Integrated frame connector 9; Corner piece assembly 10; Metal embedded parts 11; The corner of the hanging ear is 12; Wear-resistant plate 13. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the scope of protection of the present invention.

[0024] Example 1: This invention provides a lightweight carbon fiber cabinet structure, such as... Figures 1 to 8 As shown, the structure includes a top plate 1, a bottom plate 2, a left side plate 3, a right side plate 4, a front side plate 5, a reinforcing frame 6, and an electrical control box bracket 7. The front, rear, left, and right sides of the top plate 1 are connected to the top ends of the front side plate 5, the reinforcing frame 6, the left side plate 3, and the right side plate 4, respectively. The front, rear, left, and right sides of the bottom plate 2 are connected to the bottom ends of the front side plate 5, the reinforcing frame 6, the left side plate 3, and the right side plate 4, respectively. This allows the top plate 1, the bottom plate 2, the left side plate 3, the right side plate 4, the front side plate 5, and the reinforcing frame 6 to form a frame structure. The electrical control box bracket 7 is located in the upper left corner inside the frame structure.

[0025] Specifically, the top plate 1, bottom plate 2, left side plate 3, right side plate 4, front side plate 5, reinforcing frame 6, and electrical control box bracket 7 are all carbon fiber composite material structures. The first and last layers of the top plate 1, bottom plate 2, left side plate 3, right side plate 4, front side plate 5, reinforcing frame 6, and electrical control box bracket 7 are carbon fiber structures. The first and last layers use T300 grade plain weave carbon cloth, and the inner layer uses T700 grade unidirectional prepreg quasi-isotropic layup with layup angles between 0°, ±30°, ±45°, ±60° and 90°.

[0026] Furthermore, each carbon fiber plate, including the top plate 1, bottom plate 2, left side plate 3, right side plate 4, front side plate 5, reinforcing frame 6, and electrical control box bracket 7, is equipped with metal embedded parts 11 for assembling and connecting external equipment. By pre-embedding the metal embedded parts 11 inside each carbon fiber plate, assembly interfaces and equipment installation interfaces are formed. The metal embedded parts 11 are integrally processed using 2Cr13 and TC4 materials, respectively.

[0027] The carbon fiber plates are connected and assembled with metal parts; the front side plate 5 and the left side plate 3 are both provided with detachable positions; each carbon fiber plate is provided with an equipment installation window; the overall outer surface of the frame structure needs to be sprayed with protective varnish, preferably TS96-11 fluoropolyurethane varnish.

[0028] The frame structure is externally equipped with an integrated frame connector 9, which is a titanium alloy component and serves as the external mounting structure for the cabinet. The top of the frame structure is equipped with a lifting lug 12, which is a connection structure for hoisting. Both the integrated frame connector 9 and the lifting lug 12 are metal connectors, and the top lifting lug 12 and the integrated frame connector 9 are preferably made of TC4 titanium alloy in one piece.

[0029] The lightweight carbon fiber cabinet structure also includes a sealing strip, a wear-resistant plate 13, a bottom corner joint 8, and a corner bracket assembly 10. Both the bottom corner joint 8 and the corner bracket assembly 10 are metal connectors used to connect adjacent carbon fiber plates. For example, metal connectors with right-angled cross-sections can be used. The bottom corner joint 8 is preferably made of 6061-T6 grade aluminum alloy and machined as a single piece with a black anodized finish. The corner bracket assembly 10 is preferably made of 6063-T5L type aluminum corner brackets and machined as a single piece. The wear-resistant plate 13 is mounted on the base plate 2 and serves a wear-resistant function. The wear-resistant plate 13 is made of molybdenum disulfide material and machined as a single piece. The sealing strip is positioned between two adjacent carbon fiber plates and is made of anti-mildew silicone rubber. For example, the sealing strip can be made of anti-mildew silicone rubber HK6140F, which can act as a buffer between the two carbon fiber plates.

[0030] In this invention, the metal parts, wear-resistant plate 13, and silicone rubber plate are processed according to the drawings. During the molding and bonding of the carbon fiber plates, a carbon fiber prepreg lamination structure is used, and each carbon fiber plate is obtained through hot pressing and curing, and then bonded to the metal embedded parts 11. During the assembly of the carbon fiber cabinet, tooling is used to position the carbon fiber plates and metal parts through profiles and holes, and the carbon fiber cabinet is obtained by bonding and screwing them together. This invention also enables modular installation of the equipment while reducing the overall weight, offering advantages such as light weight, strong versatility, and excellent consistency, as well as high assembly efficiency and mass production capabilities.

[0031] The present invention also provides an assembly method for a lightweight carbon fiber cabinet structure, comprising the following steps: S1: Top plate 1, bottom plate 2, left side plate 3, right side plate 4, front side plate 5, reinforcing frame 6, and electrical control box bracket 7 are formed by carbon fiber prepreg layer curing and prefabricated embedded parts installation holes are machined. Integrated frame connector 9, lifting lug 12, bottom lug 8, corner piece assembly 10, and metal embedded parts 11 are manufactured by integral machining of a whole blank. S2: Grind the metal embedded part 11 and the surfaces of each carbon fiber plate to be glued, then use a specific adhesive to glue them together, ensuring that there is enough adhesive at the gluing location, and clean up any excess adhesive residue. S3: Assemble the top plate 1, bottom plate 2, left side plate 3, right side plate 4, front side plate 5, reinforcing frame 6, electrical control box bracket 7, lifting lug 12, bottom lug 8, corner plate assembly 10, wear-resistant plate 13, and sealing strip in a specific assembly sequence using adhesive bonding and screwing. The adhesive bonding uses rich adhesive extrusion bonding, and the bolts use countersunk screws, which are screwed with adhesive. S4: After the bonding is completed, protect the unpainted parts and paint the rest of the parts. S5: Inspect the product appearance to ensure that the bushing does not protrude above the product plane and that there is no paint color difference on the overall surface. If there are any problems, rework the problematic parts and re-inspect. S6: Use the inspection template to check the dimensions of the external connection interfaces on each side.

[0032] Example 2: This embodiment is a preferred example of embodiment 1. In this embodiment, all connecting surfaces of the cabinet are connected by both adhesive and screw connections. The embedded parts in the cabinet are connected to the carbon fiber plate by adhesive. The detachable positions on the front side panel 5 and the left side panel 3 are not glued during assembly, but only screwed. After assembly, the entire assembly is sprayed with TS96-11 fluoropolyurethane varnish.

[0033] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A lightweight carbon fiber cabinet structure, characterized in that, The components include a top plate (1), a bottom plate (2), a left side plate (3), a right side plate (4), a front side plate (5), a reinforcing frame (6), and an electrical control box bracket (7), all made of carbon fiber composite materials. The top plate (1) is connected to the top of the front side plate (5), the reinforcing frame (6), the left side plate (3), and the right side plate (4) at the front, back, left, and right respectively. The bottom plate (2) is connected to the bottom of the front side plate (5), the reinforcing frame (6), the left side plate (3), and the right side plate (4) at the front, back, left, and right respectively, so that the top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), and reinforcing frame (6) together form a frame structure. The electrical control box bracket (7) is arranged in the upper left corner inside the frame structure.

2. The lightweight carbon fiber cabinet structure according to claim 1, characterized in that, The top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), and reinforcing frame (6) are all equipped with metal embedded parts (11) for assembling and connecting external equipment.

3. The lightweight carbon fiber cabinet structure according to claim 1, characterized in that, The entire outer surface of the frame structure is coated with protective varnish.

4. The lightweight carbon fiber cabinet structure according to claim 1, characterized in that, The top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), reinforcing frame (6), and electrical control box bracket (7) are all connected and assembled by metal parts.

5. The lightweight carbon fiber cabinet structure according to claim 1, characterized in that, The frame structure is externally configured with an integrated frame connector (9); The top of the frame structure is equipped with a lifting lug (12); The integrated frame connector (9) and the lifting lugs (12) are both metal connectors.

6. The lightweight carbon fiber cabinet structure according to claim 1, characterized in that, It also includes a sealing strip, a wear-resistant plate (13), a bottom corner bracket (8), and a corner piece assembly (10); The bottom corner bracket (8) and corner piece assembly (10) are both metal connectors used to connect adjacent carbon fiber plates; The wear-resistant plate (13) is disposed on the base plate (2), and the sealing strip is disposed between two adjacent carbon fiber plates.

7. The lightweight carbon fiber cabinet structure according to claim 6, characterized in that, The bottom corner bracket (8) is made of 6061-T6 grade aluminum alloy and is processed as a whole and then black anodized; the corner piece assembly (10) is made of 6063-T5L type aluminum corner piece and is processed as a whole. The wear-resistant plate (13) is integrally processed using molybdenum disulfide material, and the sealing strip is processed using anti-mildew silicone rubber plate HK6140F.

8. An assembly method for a lightweight carbon fiber cabinet structure, characterized in that, Includes the following steps: S1: The top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), reinforcing frame (6), and electrical control box bracket (7) are formed by carbon fiber prepreg layer curing and prefabricated embedded parts installation holes are machined. The integrated frame connector (9), lifting lug (12), bottom lug (8), corner piece assembly (10), and metal embedded parts (11) are machined from a whole blank. S2: Grind the metal embedded parts (11) and the surfaces to be glued on each carbon fiber plate, then use adhesive to glue them together, ensuring that there is enough adhesive at the glued position and cleaning up any excess adhesive residue. S3: Assemble the top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), reinforcing frame (6), electrical control box bracket (7), lifting lug (12), bottom lug (8), corner piece assembly (10), wear-resistant plate (13), and sealing strip by adhesive bonding and / or screwing. S4: After the bonding is completed, protect the unpainted parts and paint the rest of the parts. S5: Inspect the product appearance; S6: Use the inspection template to check the dimensions of the external connection interfaces on each side.

9. The assembly method of the lightweight carbon fiber cabinet structure according to claim 8, characterized in that, In S3, the adhesive bonding is achieved by rich adhesive extrusion bonding, and the bolts are countersunk screws, which are screwed together with adhesive.

10. The assembly method of the lightweight carbon fiber cabinet structure according to claim 1 or the lightweight carbon fiber cabinet structure according to claim 8, characterized in that, The top plate (1), bottom plate (2), left side plate (3), right side plate (4), front side plate (5), reinforcing frame (6), and electrical control box bracket (7) are all manufactured in the following manner: The first and last layers use T300 grade plain weave carbon cloth, and the inner layer uses T700 grade unidirectional prepreg quasi-isotropic layup with layup angles of 0°, ±30°, ±45°, ±60° and 90°.

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