Composite airborne equipment frame shaped like Chinese character'ri '

Abstract

The utility model discloses a B-shaped composite material airborne equipment frame in the technical field of composite material products. The B-shaped composite material airborne equipment frame comprises an integrated frame and a middle partition plate, the middle partition plate is fixed to the middle position in the integrated frame. A left metal guide rail and a right metal guide rail are mounted on two sides in the integrated frame; middle metal guide rails are mounted on two sides of the middle partition plate; a wear-resisting metal layer is attached to the top side face and the bottom side face in the integrated frame, a front side face plate and a rear side face plate are fixedly installed on the front side face and the rear side face of the integrated frame, the equipment frame is of a composite material foam sandwich structure, the requirement for weight reduction is met to the maximum extent while the functional requirement is met, the requirement for light-weight design is met, and the composite material foam sandwich structure can be used in airplanes.

Description

Technical Field

[0001] The utility model relates to the technical field of composite products, in particular to a composite equipment frame. Background Art

[0002] Composite materials are a relatively mature material, having been successfully applied in a variety of military and civilian fields, including aerospace, military, civilian aircraft, sporting goods, civil engineering, construction, industry, transportation, energy, and electronics. Composite materials are generally made of a resin matrix with a reinforcement material, such as carbon fiber, boron fiber, glass fiber, and aramid fiber. Composite materials offer advantages such as low density, high specific strength, high specific stiffness, and fatigue resistance.

[0003] In the field of aviation aircraft, advanced composite materials are mainly used in components such as aircraft tail wings, flaps, ailerons, radomes, fairings, and equipment frames. The utility model is an equipment frame for an aircraft control room, which is a container for certain electronic equipment and is used for the installation and support of electronic equipment.

[0004] In recent years, with the improvement of aircraft design and the advancement of composite material technology, the use of composite materials in aircraft has continued to grow. Among them, composite equipment frames have attracted the attention of designers due to their advantages of light weight and high strength. Composite material structures can reduce the number of parts and have better integrity. They are currently mostly used to form relatively simple structures such as panels, frames, and ribs. The main structural types are laminated panels, foam sandwich cores, honeycomb sandwich cores, etc. At the same time, scientific researchers are gradually trying to use composite materials to form complex structures, and even the overall structure of products, such as integrated machining and integrated display and control consoles.

[0005] The present invention is designed to provide a composite material frame, which is a carrier container for electronic equipment in an aircraft control room. Existing airborne electronic equipment frames are mostly made of metal. Metal frames are simple in design and easy to form, and can meet the requirements of electromagnetic shielding. However, the most fatal disadvantage of metal materials is their high material density, which leads to a large waste of weight indicators. In order to meet the requirements of aircraft weight reduction, a lot of research has been carried out on composite material equipment frames, which have been applied to a variety of airborne equipment. Composite materials are light in weight, reduce the number of parts, and have good structural integrity. However, existing composite material frames can only be used for the manufacture of simple frame structures, such as composite flat panel brackets, U-shaped frames, etc. For equipment frames with slightly complex structures or other functional requirements, composite materials are still difficult to meet the requirements.

[0006] The existing loading electronic equipment frame is still difficult to meet the use requirements. The metal frame is heavy and has many parts; the composite frame has a simple structure and is difficult to meet the structural and functional requirements. Therefore, it is imperative to design a lightweight composite airborne equipment frame that can meet the structural and functional requirements. Utility Model Content

[0007] In response to the deficiencies in the prior art, the utility model provides a Japanese-shaped composite airborne equipment frame, which solves the problem that the existing airborne electronic equipment frames are heavy and waste the aircraft weight index; solves the problem that the existing composite equipment frames cannot form complex structural frames; solves the problem that the existing composite equipment frames are difficult to meet functional requirements such as electromagnetic shielding; solves the problem that the existing composite equipment frames are complicated to disassemble and assemble, and the threads are easily damaged due to repeated use; and solves the problem that the composite skin of the existing composite equipment frames has poor wear resistance.

[0008] The purpose of the utility model is achieved as follows: a Japanese-shaped composite airborne equipment frame, comprising an integral frame and a middle partition; the middle partition is fixed at a middle position inside the integral frame; left and right metal guide rails are installed on both sides of the integral frame, and middle metal guide rails are installed on both sides of the middle partition; a wear-resistant metal layer is attached to the top and bottom sides of the integral frame, and a front side panel and a rear side panel are fixedly installed on the front and rear sides of the integral frame.

[0009] Furthermore, the integrated frame is a foam sandwich structure, which is formed by splicing four core panels, wrapping the entire frame with a skin, and then curing in an autoclave. Each core panel is prefabricated by gluing PMI foam and metal embedded parts.

[0010] Furthermore, the four core panels are respectively the bottom panel, the top panel, the right panel and the left panel. The bottom panel is formed by grooving the bottom PMI foam, embedding the bottom T-shaped embedded block and the bottom square embedded block therein; the right panel is formed by splicing a number of right-side embedded metal strips and right-side PMI foam; the top panel is formed by grooving the top PMI foam, embedding the top T-shaped embedded block and the top square embedded block therein; the left panel is formed by splicing a number of left-side embedded metal strips and left-side PMI foam.

[0011] Furthermore, the middle partition is a foam sandwich structure, and the middle T-shaped embedded block, the small square embedded block, and the large square embedded block are embedded in the middle PMI foam, and the whole is wrapped with a skin.

[0012] Furthermore, the left metal guide rail and the right metal guide rail are fixedly connected after being glued to the integrated frame, and the middle metal guide rail is fixedly connected after being glued to the middle partition. The left metal guide rail, the middle metal guide rail and the right metal guide rail are made of aluminum alloy and are provided with concave slides with equipment installation holes reserved in the slides.

[0013] Furthermore, the integrated frame, the middle partition, the left metal guide rail, the middle metal guide rail and the right metal guide rail are all provided with ventilation holes.

[0014] Furthermore, the wear-resistant metal layer is made of aluminum alloy, and is laid on the inner surface of the integrated frame and is solidified together with the integrated frame.

[0015] Furthermore, the front panel and the rear panel are laminate structures, the inner surfaces of which are covered with a layer of 100-mesh conductive copper mesh, and the surfaces of the front panel and the rear panel are electrically continuous.

[0016] Furthermore, wiring grooves are provided on both sides of the bottom of the rear panel.

[0017] Improvements of this patent over existing products:

[0018] 1. Compared with existing airborne electronic equipment frames, the equipment frame of this utility model adopts a composite foam sandwich structure. Except for a small part of metal materials in the functional area, the rest is a lightweight and high-strength structure. It achieves the requirements of weight reduction to the greatest extent while meeting the functional requirements and the requirements of composite lightweight design;

[0019] 2. The utility model forms a Japanese-shaped frame structure. A single frame can realize the installation of two identical devices. At the same time, the structure can be adjusted to realize the installation of two different devices. According to the design idea of ​​the utility model, a Japanese-shaped frame structure, a field-shaped frame structure, etc. can be designed to meet the needs of installing various equipment;

[0020] 3. The main structure of this utility model is a lightweight, high-strength composite material. The front and rear side panels are composited with a high-mesh copper mesh. The frame is internally installed with guide rails, wear-resistant metal layers, and other metal structures. After the equipment is installed in the frame and the front and side panels are covered, the inner surface of the frame forms an electrically continuous equipotential body, shielding against external electromagnetic interference while preventing interference between the equipment inside the frame and external devices.

[0021] 4. The left and right side panels of this utility model are both equipped with ventilation ducts, which can play the role of ventilation and heat dissipation. At the same time, there are metal embedded parts inside the left and right side panels, which can be subsequently equipped with holes to install fans and other heat dissipation equipment;

[0022] 5. The front and rear panels of this utility model are mechanically connected and easy to disassemble. After removing the front panel, remove the device mounting screws and remove the cables to remove the device.

[0023] 6. The interior of the frame of this utility model and the contact area with the equipment are all made of hard anodized metal material, which improves the wear resistance of the frame and ensures that the equipment will not wear the frame during use and disassembly;

[0024] 7. Compared with the previous design of opening a wiring trough on the bottom plate, the present invention sets the wiring trough at the bottom of the rear panel. This design is more conducive to the arrangement of cables. At the same time, there are no cables at the bottom of the frame and it can be placed on the flat plate, without limiting the structural form of the installation base.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The equipment frame of the present invention adopts a composite foam sandwich structure, which achieves the requirements of weight reduction and composite lightweight design to the greatest extent while meeting functional requirements; the structure of the present invention is highly designable, and according to the design concept of the present invention, a U-shaped frame structure, a field-shaped frame structure, etc. can be designed to meet the needs of installing various equipment; the inner surface of the present invention is an electrically continuous and equal entity with electromagnetic shielding performance, and the left and right sides refer to ventilation channels to ensure the ventilation and heat dissipation functions of the equipment. At the same time, the metal on the inner surface of the frame is hardened and has a very high wear resistance; the utility model provides a U-shaped composite airborne equipment frame that meets the needs of different equipment frames through changes in external dimensions, adjustments and additions to parts positions, and can be suitable for use on aircraft, trains, ships, or other ground control equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0028] Figure 1 It is a structural diagram of the present utility model.

[0029] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0030] Figure 3 It is a half-section schematic diagram of the overall structure of the utility model.

[0031] Figure 4 This is a schematic diagram of the internal structure of the integrated frame of the present utility model.

[0032] Figure 5 This is a schematic diagram of the internal structure of the middle partition of the present utility model.

[0033] Figure 6 This is a schematic diagram of the middle partition of the present invention.

[0034] Figure 7 This is a schematic diagram of the integrated frame assembly of the present invention.

[0035] Figure 8 This is a schematic diagram of the installation of a dummy electronic device of the present invention.

[0036] Among them, 1 integrated frame, 101 bottom PMI foam, 102 bottom T-shaped embedded block, 103 bottom square embedded block, 104 right embedded metal strip, 105 right PMI foam, 106 top PMI foam, 107 top T-shaped embedded block, 108 top square embedded block, 109 left embedded metal strip, 110 left PMI foam, 2 middle partition, 201 PMI foam, 202 T-shaped embedded block, 203 small square embedded block, 204 large square embedded block, 3 left metal guide rail, 4 middle metal guide rail, 5 right metal guide rail, 6 wear-resistant metal layer, 7 front panel, 8 rear panel, 9 countersunk screws, 10 hexagon head bolts, 11 parent and child flat head nails, 12 electronic equipment fake parts. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] like Figure 1-8 The structural schematic diagram of a preferred embodiment of a Japanese-shaped composite airborne equipment frame shown is composed of an integral frame 1 and a middle partition 2. The middle partition 2 is placed in the middle position inside the integral frame 1, and is fixed to the integral frame 1 at the top and bottom by countersunk screws 9; a left metal guide rail 3 and a right metal guide rail 5 are installed on both sides of the interior of the integral frame 1, and an intermediate metal guide rail 4 is installed on both sides of the middle partition 2; a wear-resistant metal layer 6 is attached to the top and bottom sides of the integral frame 1, and the front and rear sides are connected to the front side panel 7 and the rear side panel 8 respectively by hexagonal bolts 10; the above constitutes the basic structural features of the Japanese-shaped equipment frame.

[0039] The integrated frame 1 is a foam sandwich structure. The integrated frame 1 is formed by splicing 4 core panels, wrapping the whole with a 1mm skin, and then autoclaving. Each core panel is prefabricated by gluing PMI foam and metal embedded parts. The bottom plate is composed of the bottom PMI foam 101 slotted, the bottom T-shaped embedded block 102 and the bottom square embedded block 103 embedded therein; the right plate is composed of several right-side embedded metal strips 104 and right-side PMI foam 105 spliced ​​together; the top plate is composed of the top PMI foam 106 slotted, the top T-shaped embedded block 107 and the bottom square embedded block 108 embedded therein; the left plate is composed of several left-side embedded metal strips 109 and the left-side PMI foam 110 spliced ​​together.

[0040] The middle partition 2 is a foam sandwich structure, wherein T-shaped embedded blocks 202, small square embedded blocks 203 and large square embedded blocks 204 are embedded in PMI foam 201, and the whole is wrapped with a 1mm skin and then solidified in an autoclave.

[0041] After the left metal guide rail 3 and the right metal guide rail 5 are glued to the integrated frame 1, they are partially mechanically connected using countersunk screws 9. After the middle metal guide rail 4 is glued to the middle partition 2, they are partially mechanically connected using parent and child flat head nails 11.

[0042] The left metal guide rail 3, the middle metal guide rail 4, and the right metal guide rail 5 are made of aluminum alloy, and the surface is hard anodized to improve its hardness and wear resistance. The metal guide rails are provided with concave slides for equipment installation, and equipment installation holes are reserved in the slides for subsequent equipment installation.

[0043] The integrated frame 1, the middle partition 2 and the surface-mounted metal guide rails are all provided with ventilation holes for ventilation and heat dissipation of the equipment. Several metal strips are pre-embedded on the left and right sides of the integrated frame 1. Holes can be made in the pre-embedded parts to install fans for heat dissipation and ventilation.

[0044] The wear-resistant metal layer 6 is made of aluminum alloy and is hard-anodized on the surface. The wear-resistant metal layer 6 is laid on the inner surface of the integrated frame 1 and is solidified together with the integrated frame 1 .

[0045] The front panel 7 and the rear panel 8 are thin laminate structures, and a layer of 100 mesh conductive copper mesh is laid on the inner surface and formed together with the laminate. After forming, the surfaces of the front panel 7 and the rear panel 8 are electrically continuous and can play the role of electromagnetic shielding.

[0046] There are wiring grooves on both sides of the bottom of the rear panel 8 for wiring equipment inside the frame.

[0047] The mechanical connection between the integral frame 1 and the middle partition 2, as well as the installation of the metal guide rails, are designed to minimize the number of disassembly cycles, and countersunk screws 9 or flat-head nails 11 are used. The nail heads do not protrude from the product surface to ensure aesthetics. The front and rear panels 7 and 8 use hexagonal bolts 10 for easy disassembly.

[0048] Example 1: Through the installation of an electronic equipment dummy, briefly describe the equipment installation process of the Japanese-shaped composite airborne equipment frame.

[0049] See also Figure 8 , Figure 8 This is a schematic diagram of the installation of an electronic device dummy for a Japanese-shaped composite material airborne equipment frame provided by the present invention. First, the left dummy 12 is pushed into the equipment frame along the guide rail, and the cables on the dummy 12 are arranged along the wiring trough. Then, the dummy is fixed to the left side of the frame with a countersunk screw 9; the right dummy 12 is installed into the interior of the equipment frame in the same way, and finally the front panel is sealed with a hexagonal head bolt 10.

[0050] Example 2: Taking the equipment frame with the same dimensions of 350mm*235mm*130mm as an example, the weight of the full metal frame (made of aluminum alloy) and the composite material frame of the utility model are calculated and compared.

[0051] Calculations show that the weight of the full metal frame is approximately 6.7 kg, and the weight of the composite equipment frame of the utility model is approximately 3.4 kg. It can be seen that the weight of the equipment frame of the utility model is reduced by nearly half compared to the full metal equipment frame.

[0052] Example 3: The utility model has ventilation channels on the left and right sides of the equipment frame for heat dissipation of the equipment. If the equipment generates a lot of heat, the convection heat exchange under the natural flow of air cannot meet the demand. The utility model reserves additional interfaces on the left and right sides for the installation of fans. Holes can be made at the positions of the embedded metal strips on the left and right side panels to install fans, fan covers and other equipment.

[0053] The above embodiments are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A Japanese-shaped composite airborne equipment frame, comprising an integral frame (1) and a middle partition (2), characterized in that: The middle partition (2) is fixed at the middle position inside the integrated frame (1); a left metal guide rail (3) and a right metal guide rail (5) are installed on both sides of the internal part of the integrated frame (1), and a middle metal guide rail (4) is installed on both sides of the middle partition (2); a wear-resistant metal layer (6) is attached to the top and bottom sides of the internal part of the integrated frame (1), and a front side panel (7) and a rear side panel (8) are fixedly installed on the front and rear sides of the integrated frame (1).

2. The Japanese-style composite airborne equipment frame according to claim 1, characterized in that: The integrated frame (1) is a foam sandwich structure, and is formed by splicing four core panels, wrapping the entire panel with a skin, and then curing in an autoclave. Each core panel is prefabricated by gluing PMI foam and metal embedded parts.

3. The Japanese-shaped composite airborne equipment frame according to claim 2, characterized in that: The four core plates are respectively a bottom plate, a top plate, a right plate and a left plate. The bottom plate is formed by slotting the bottom PMI foam (101) and embedding the bottom T-shaped embedded block (102) and the bottom square embedded block (103) therein; the right plate is formed by splicing a plurality of right-side embedded metal strips (104) and right-side PMI foam (105); the top plate is formed by slotting the top PMI foam (106) and embedding the top T-shaped embedded block (107) and the top square embedded block (108); and the left plate is formed by splicing a plurality of left-side embedded metal strips (109) and left-side PMI foam (110).

4. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: The middle partition (2) is a foam sandwich structure, wherein a middle T-shaped embedded block (202), a small square embedded block (203), and a large square embedded block (204) are embedded in the middle PMI foam (201), and the whole is wrapped with a skin.

5. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: The left metal guide rail (3) and the right metal guide rail (5) are fixedly connected to the integral frame (1) after being glued, and the middle metal guide rail (4) is fixedly connected to the middle partition (2) after being glued. The left metal guide rail (3), the middle metal guide rail (4), and the right metal guide rail (5) are made of aluminum alloy and are provided with concave slides, and equipment installation holes are reserved in the slides.

6. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: The integrated frame (1), the middle partition (2), the left metal guide rail (3), the middle metal guide rail (4), and the right metal guide rail (5) are all provided with ventilation holes.

7. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: The wear-resistant metal layer (6) is made of aluminum alloy. The wear-resistant metal layer (6) is laid on the inner surface of the integrated frame (1) and is solidified together with the integrated frame (1).

8. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: The front panel (7) and the rear panel (8) are laminate structures, and a layer of 100-mesh conductive copper mesh is laid on the inner surface. The surfaces of the front panel (7) and the rear panel (8) are electrically continuous.

9. A Japanese-shaped composite airborne equipment frame according to any one of claims 1 to 3, characterized in that: Wire routing grooves (801) are provided on both sides of the bottom of the rear side panel (8).

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