Universal carbon fiber airborne equipment base

Abstract

The utility model discloses a universal carbon fiber airborne equipment base in the technical field of composite material products, which comprises a base and an adapter plate, the adapter plate is mounted on the base through a first fastener, and supporting components are mounted at four corners of the base through second fasteners. According to the universal carbon fiber airborne equipment base, the requirements of various equipment bases can be met by changing the boundary dimension and adjusting and adding the positions of parts, and the universal carbon fiber airborne equipment base can be suitable for being used on airplanes, bullet trains, steamships or other ground control equipment. The adapter structure is high in design flexibility and interface change operability and is not limited by product interfaces and sizes, the adapter plate can be flexibly assembled according to the product structure, and the same base can realize installation of equipment with different sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of composite products, and particularly relates to a base for airborne equipment. Background Art

[0002] Carbon fiber is a representative one in composite materials and is a new material with great potential. It is usually a new material composed of a resin material as the matrix and a certain reinforcing material added. Compared with metal materials, carbon fiber has the advantages of low density, high specific strength, high specific stiffness, etc. At the same time, it also has the advantages of high temperature resistance, corrosion resistance, fatigue resistance, etc. With the above advantages, it is widely used in the fields of aerospace, sports goods, civil construction, transportation, new energy, electronic industry, etc.

[0003] There are various equipment installed in the control room or other cabins of an aircraft. At present, most airborne equipment uses a rack as the installation support container. The equipment is installed inside the rack, and the rack is installed on the aircraft through reserved interfaces. However, in addition to fixed equipment, there are also many mobile equipment, temporary equipment, and some equipment that was not considered for subsequent addition during design. The common feature of these equipment is that they do not have reserved installation interfaces in advance or have no fixed installation interfaces.

[0004] Currently, when designing bases or racks for different equipment, metal materials are mostly used. The metal base is heavy, which will cause serious weight waste. Therefore, weight is the primary concern of an aircraft when meeting the requirements of rigidity and strength. At the same time, the previously designed bases have poor versatility and cannot meet the installation requirements of various equipment at the same time. Special bases need to be designed for different equipment, and the design cycle and manufacturing cycle are long according to the equipment design, which makes the equipment unable to be put into use immediately, resulting in a waste of time. Therefore, it is necessary to study a rack base with light weight and good versatility to solve the above problems. Content of the Utility Model

[0005] Aiming at the deficiencies in the prior art, the utility model provides a general-purpose carbon fiber base for airborne equipment, which solves the problem that too much metal material is used for the base of airborne equipment, sacrificing too much weight; solves the problem that the versatility of the base of airborne equipment is poor and cannot meet the installation of different types of equipment; solves the problem that the vibration damping performance of the base of airborne equipment is poor and affects the normal use of the equipment; solves the problem that the mobility of the base of airborne equipment is poor and cannot meet the installation of mobile equipment; solves the problem that delamination is easy to occur near the composite material installation hole of the base of airborne equipment.

[0006] The purpose of the utility model is achieved as follows: A general-purpose carbon fiber base for airborne equipment includes a base and an adapter plate. The adapter plate is installed on the base through a first fastener, and support components are installed at the four corners of the base through a second fastener.

[0007] Further, the base is a carbon fiber foam sandwich structure. The main body framework of the base is composed of multiple aluminum alloy strips and PMI foam. The aluminum alloy strips and PMI foam are bonded by an adhesive film, and the surface of the main body framework is wrapped with a carbon fiber skin.

[0008] Further, the adapter plate is a carbon fiber laminate structure. Several stepped holes are machined on the surface of the adapter plate, and bushings are embedded in the stepped holes. The bushings are designed with a large end and a small end, and the arrangement of the large end and the small end is consistent with the force direction.

[0009] Further, the support assembly is a vibration isolator assembly. The vibration isolator assembly includes a vibration isolator and a flat washer. The vibration isolator is connected to the base through a second fastener and a flat washer.

[0010] Further, the support assembly is a caster assembly. The caster assembly includes a caster and a flat washer. The caster is connected to the base through a second fastener and a flat washer.

[0011] Further, the support assembly is an insulating base. The insulating base is fixedly connected to the bottom of the base through bolts.

[0012] Differences between the present utility model and existing products:

[0013] 1. Compared with the existing base of airborne equipment, the main structure of the present utility model adopts carbon fiber material, and the base is a foam sandwich structure. Except for the pre-embedded aluminum alloy strips in the bearing area, the rest of the position is filled with PMI foam, which can minimize the weight while meeting the bearing requirements, meeting the requirements of lightweight design.

[0014] 2. Aluminum alloy strips are pre-embedded inside the base of the present utility model, and the positions can be adjusted according to the size of the installed equipment. The bottom plate can meet the installation of various forms of adapter plates, without restricting the width, quantity, etc. of the adapter plates. The adapter plate of the present utility model is designed as a carbon fiber laminate structure, and holes can be made at any position on the adapter plate of this structure. Therefore, within the length and width dimensions of the base, the present utility model can meet the matching of any equipment interface, meeting the requirements of general-purpose design.

[0015] 3. Stepped holes are made at the connection position of the adapter plate of the present utility model. After the holes are filled with resin and bushings are embedded, the use of bushings can avoid the extrusion of the adapter plate by bolts, thereby reducing the local stress concentration of carbon fiber and preventing delamination. The bushings are designed in the form of a large end and a small end, and a countersink is made at the top of the bushing. When using a countersunk head screw, the screw head does not protrude from the surface of the adapter plate. At the same time, the design of the large end and the small end is consistent with the force direction of the screw, without the risk of pulling off. The chamfering treatment of the large end of the bushing also solves the problem of the bushing rotating in the hole.

[0016] 4. The base of the present utility model realizes different functions by connecting with different structures. Connecting the base with the vibration isolation component can achieve the function of vibration reduction and can be used for the installation of equipment with vibration reduction requirements; connecting the base with the caster component can meet the movement of the equipment and can be used for the installation of mobile equipment and temporary equipment; installing the base on the seat insulation base can achieve insulation from the ground and can be used for the installation of electrically insulated equipment.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The general-purpose carbon fiber airborne equipment base provided by the present utility model can meet the needs of various equipment bases through changes in the external dimensions, adjustment and addition of the positions of parts, and can be applied to the use on airplanes, bullet trains, ships, or other ground control equipment. The design flexibility of the transfer structure and the operability of interface changes are high, not restricted by product interfaces and dimensions, and the transfer board can be flexibly assembled according to the product structure. The same base can be used to install equipment of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0020] Figure 1 It is a schematic structural diagram of the present utility model.

[0021] Figure 2 It is a schematic diagram of the main body framework structure of the present utility model.

[0022] Figure 3 It is a schematic diagram of the semi-section structure of the skin of the present utility model.

[0023] Figure 4 It is a schematic diagram of the semi-section of the transfer board of the present utility model.

[0024] Figure 5 It is a schematic diagram of the installation of the vibration isolation component of the present utility model.

[0025] Figure 6 It is a schematic diagram of the installation structure of the caster component of the present utility model.

[0026] Figure 7 It is a schematic diagram of the installation structure of the insulation base of the present utility model.

[0027] Figure 8 It is a schematic diagram of an installation interface for an electrical device.

[0028] Among them, there is a base 1, a carbon fiber skin 11, aluminum alloy strips 12, PMI foam 13, an adapter plate 2, a bushing 21, a countersunk head screw 22, a vibration isolator assembly 3, a vibration isolator 31, a hexagon head bolt 32, a flat spring washer 33, a caster assembly 4, a caster 41, and an insulating base 5. Specific implementation manner

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Please refer to Figure 1 , Figure 1 which is a schematic structural diagram of a preferred embodiment of a general-purpose carbon fiber airborne equipment base provided by the present invention. A general-purpose carbon fiber airborne equipment base includes a base 1 and an adapter plate 2. The adapter plate 2 is installed on the base 1 through countersunk head screws 22. Vibration isolator assemblies 3, caster assemblies 4, or insulating bases 5 are installed at the four corners of the base 1 through hexagon head bolts 32. The above features constitute the basic structure of the carbon fiber airborne equipment base.

[0031] Please refer to Figure 2 , Figure 3 , Figure 2 which is a schematic diagram of the main body skeleton structure of a general-purpose carbon fiber airborne equipment base provided by the present invention, Figure 3 which is a schematic semi-sectional view of the skin of a general-purpose carbon fiber airborne equipment base provided by the present invention. The base 1 is a carbon fiber foam sandwich structure. Multiple aluminum alloy strips 12 and PMI foam 13 form the main body skeleton of the base 1. The aluminum alloy strips 12 and PMI foam 13 are bonded through a film adhesive. After the surface of the main body skeleton is wrapped with a 5 mm carbon fiber skin 11, it enters a autoclave for integral curing and forming.

[0032] Please refer to 4, Figure 4 which is a schematic semi-sectional view of the adapter plate of a general-purpose carbon fiber airborne equipment base provided by the present invention. The adapter plate 2 is a carbon fiber laminate structure. After laying multiple layers of carbon fiber prepregs on a forming mold, it enters a autoclave for curing and forming. A certain number of stepped holes are machined on the surface of the adapter plate 2. After counterboring the top of the holes, the bushings 21 are embedded therein; the bushings 21 are designed with large and small heads, and the large and small heads are arranged in the same direction as the force direction to prevent the bushings 21 from being pulled off. To prevent rotation, the large heads of the bushings 21 are trimmed.

[0033] Please refer to 5, Figure 5Schematic diagram of the installation of a general - purpose carbon fiber airborne equipment base vibration isolator assembly provided by the present utility model. The vibration isolator assembly 3 is equipped with hex - head bolts 32 and flat washers 33. The vibration isolator 31 is connected to the base 1 through the hex - head bolts 32 and flat washers 33 to achieve the vibration reduction function of the carbon fiber airborne equipment base.

[0034] Please refer to Figure 6 in conjunction. Figure 6 Schematic diagram of the installation structure of a caster wheel assembly for a general - purpose carbon fiber airborne equipment base provided by the present utility model. The caster wheel assembly 4 is equipped with hex - head bolts 32 and flat washers 33. The caster wheel 41 is connected to the base 1 through the hex - head bolts 32 and flat washers 33 to achieve the moving function of the carbon fiber airborne equipment base.

[0035] Please refer to Figure 7 in conjunction. Figure 7 Schematic diagram of the installation structure of an insulating base for a general - purpose carbon fiber airborne equipment base provided by the present utility model. After the bottom of the base 1 is connected to the insulating base 5 through bolts, it can meet the installation of electrical equipment that needs to be insulated from the ground.

[0036] Please refer to Figure 1 , holes can be drilled at any position along the boss direction of the base 1, and the installation position, span, and quantity of the adapter plate 2 can be adjusted according to the size of the actual equipment;

[0037] Please refer to Figure 1 , holes can be drilled at any position along the length direction of the adapter plate 2. After drilling, the bushing 21 is embedded to meet the installation of different equipment interfaces.

[0038] Example 1: Taking an airborne base with an external dimension of 1050mm * 775mm * 70mm as an example, the weights of the base made of aluminum alloy and the carbon fiber base of the present utility model are compared.

[0039] Calculation shows that the weight of the base made of aluminum alloy is about 58 Kg, and the mass of the carbon fiber base of the present utility model is about 32.5 Kg. It can be seen that the weight of the carbon fiber base of the present utility model is nearly halved compared with the base made of aluminum alloy.

[0040] Example 2: Please refer to Figure 8 , Figure 8 Schematic diagram of an installation interface for an electrical equipment. Taking the installation of this equipment on a general - purpose carbon fiber airborne equipment base as an example, the adapter installation is achieved by adjusting the installation position of the adapter plate and the boss rib of the bottom plate, and the position of the external interface of the adapter plate.

[0041] The 4 - column holes of the external interface correspond to 4 adapter plates, and the plate spacing is 100 mm. Therefore, 4 groups of holes can be drilled on 3 boss ribs of the base for installing the adapter plates, and the hole spacing of each group is 100 mm; at the same time, the adapter plates are processed, and 7 bushing - embedding holes are drilled on each plate to embed the bushings. The hole spacing is 80 mm. After the bushings are embedded and tapped, they are installed on the base.

[0042] Example 3: Please refer to Figure 1 and Figure 6 and Figure 7 . The diagrams show that the bottom of the base is connected to the vibration isolator, casters, and insulating base respectively.

[0043] Installing a vibration isolator at the bottom of the base can be used for the installation of equipment with vibration reduction requirements. Installing casters at the bottom of the base can be used for the installation of temporary equipment and equipment with mobility requirements. Connecting the bottom of the base to the insulating base can be used for the installation of electrical equipment with insulation requirements.

[0044] The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A general-purpose carbon fiber airborne equipment base, comprising a base (1) and an adapter plate (2), characterized in that: The adapter board (2) is installed on the base (1) through the first fastener (22). The support components are installed at the four corners of the base (1) through the second fasteners (32). The base (1) is a carbon fiber foam sandwich structure. The main body framework of the base (1) is composed of multiple aluminum alloy strips (12) and PMI foam (13). The aluminum alloy strips (12) and the PMI foam (13) are bonded through a film adhesive, and the surface of the main body framework is wrapped with a carbon fiber skin (11).

2. A general-purpose carbon fiber airborne equipment base according to claim 1, characterized in that The adapter board (2) is a carbon fiber laminate structure. A number of stepped holes are machined on the surface of the adapter board (2), and bushings (21) are embedded in the stepped holes. The bushings (21) are designed with a large end and a small end, and the large end and small end are arranged in the same direction as the force direction.

3. A general-purpose carbon fiber airborne equipment base according to claim 1, characterized in that, The support component is a vibration isolator assembly (3). The vibration isolator assembly (3) includes a vibration isolator (31) and a flat spring washer (33). The vibration isolator (31) is connected to the base (1) through the second fastener (32) and the flat spring washer (33).

4. The general carbon fiber airborne equipment base according to claim 1, characterized in that, The support component is a caster assembly (4). The caster assembly (4) includes a caster (41) and a flat spring washer (33). The caster (41) is connected to the base (1) through the second fastener (32) and the flat spring washer (33).

5. A general-purpose carbon fiber airborne equipment base according to claim 1, characterized in that, The support component is an insulating base (5). The insulating base (5) is fixedly connected to the bottom of the base (1) through bolts.

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