阅读说明：本技术 一种碳纤维天线骨架 (Carbon fiber antenna framework ) 是由 韦生文 李直 赵玉申 李磊 孙艳龙 薛伟锋 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种碳纤维天线骨架,包括多层框架、多个内接接头以及多个外接接头,所述多层框架形成立体空心骨架,每层框架均通过矩形方管拼接而成,每层框架内部的矩形方管通过内接接头连接,每层框架与相邻层框架之间通过外接接头连接,所述矩形方管上设有用于安装天线线缆的线夹预埋件以及用于安装雷达组件的设备预埋件,所述框架、内接接头、外接接头、线夹预埋件以及设备预埋件均采用碳纤维材料；本发明的优点在于：最大限度地对天线骨架减重且提供较多的安装点,以满足现有天线反射板的轻质化要求以及安装点位要求。(The invention discloses a carbon fiber antenna framework, which comprises a plurality of layers of frames, a plurality of internal joints and a plurality of external joints, wherein the plurality of layers of frames form a three-dimensional hollow framework, each layer of frames are formed by splicing rectangular square pipes, the rectangular square pipes in each layer of frames are connected through the internal joints, each layer of frames are connected with the adjacent layer of frames through the external joints, the rectangular square pipes are provided with wire clamp embedded parts for installing antenna cables and equipment embedded parts for installing radar components, and the frames, the internal joints, the external joints, the wire clamp embedded parts and the equipment embedded parts are all made of carbon fiber materials; the invention has the advantages that: the antenna framework is lightened to the maximum extent, and more mounting points are provided, so that the requirement of the existing antenna reflector on light weight and the requirement of mounting point positions are met.)

1. The utility model provides a carbon fiber antenna skeleton, its characterized in that, includes multilayer frame, a plurality of internal joint and a plurality of external joint, multilayer frame forms three-dimensional hollow skeleton, and every layer of frame all forms through the concatenation of rectangle side pipe, and the inside rectangle side pipe of every layer of frame passes through the internal joint and connects, through external joint connection between every layer of frame and the adjacent layer of frame, be equipped with the fastener built-in fitting that is used for installing the antenna cable and be used for installing radar component's equipment built-in fitting on the rectangle side pipe, frame, internal joint, external joint, fastener built-in fitting and equipment built-in fitting all adopt carbon fiber material.

2. The carbon fiber antenna framework of claim 1, wherein the multi-layer frame comprises a first layer frame, the first layer frame is a grid-shaped frame formed by splicing a plurality of rectangular square tubes through inner joints, an equipment embedded part is arranged on one rectangular square tube on the left side of the first layer frame, and a radar component is fixedly connected to the equipment embedded part.

3. The carbon fiber antenna framework of claim 2, wherein the rectangular square tubes at the middle positions of the first layer of framework are connected with vertically upward short tubes through external connectors, all the short tubes are connected through the rectangular square tubes from top to bottom to form a rectangular grid, the middle parts of the short tubes on the same rectangular square tube are connected through the rectangular square tubes, and the rectangular square tubes connected at the middle parts of all the short tubes are connected to form a second layer of framework.

4. The carbon fiber antenna framework of claim 3, wherein the tops of the short tubes on the same rectangular square tube are connected through the rectangular square tube, and the rectangular square tubes connected at the tops of all the short tubes form a third layer of frame.

5. The carbon fiber antenna framework of claim 4, further comprising a slope structure, wherein the slope structure is a triangular frame formed by splicing a plurality of rectangular square tubes, the second layer frame, the third layer frame and the first layer frame integrally form a rectangular hollow frame, the left side and the right side of the front side of the rectangular hollow frame are both connected with a triangular frame, the left side and the right side of the rear side of the rectangular hollow frame are both connected with a triangular frame, and when viewed from a main view direction, the front side of the rectangular hollow frame and the triangular frames on the left side and the right side of the rectangular hollow frame form a trapezoid with a short top and a long bottom.

6. The carbon fiber antenna framework of claim 5, wherein the front side and the back side of the rectangular hollow frame are fixedly connected with mounting side plates, and the size of the mounting side plates is matched with the front side and the back side of the rectangular hollow frame.

7. The carbon fiber antenna framework of claim 6, wherein the mounting side plate is manufactured by the following steps: the method comprises the steps of firstly manufacturing rectangular square pipes, cutting the rectangular square pipes for standby according to the length of the square pipes required by design, manufacturing a groined metal force-bearing embedded part by utilizing a plurality of rectangular square pipes, installing a foam clamp core body into the metal force-bearing embedded part, filling the joint of the foam clamp core body and the metal force-bearing embedded part with foaming glue, wrapping a layer of glue film on the whole outer surface of the spliced foam clamp core body and the metal force-bearing embedded part, paving a carbon fiber prepreg outside by taking the foam clamp core body which is wrapped with the glue film and contains the metal force-bearing embedded part as a male die, packaging with a vacuum bag after paving, vacuumizing, transferring to a hot pressing tank for high-temperature and high-pressure curing and forming, and manufacturing the hanging side plate for standby.

8. The carbon fiber antenna framework of claim 6, wherein a plurality of radar assemblies are arranged on the rectangular hollow frame, and the radar assemblies are fixedly mounted on the rectangular square tube through equipment embedded parts.

9. The carbon fiber antenna framework of claim 1, wherein the three-dimensional hollow framework is provided with mounting points for the wire clamp embedded parts according to actual antenna routing.

10. The carbon fiber antenna framework of claim 1, wherein the rectangular square tube is provided with a wire clamp embedded part and an equipment embedded part which are fixed at preset positions in a rivet pulling and rivet pulling mode.

Technical Field

The invention relates to a carbon fiber antenna framework forming technology, in particular to a carbon fiber antenna framework.

Background

For airborne, ball-borne electronic devices such as radars, etc., the weight of the device load is a very important indicator due to the limited load-bearing capacity of the platform. The antenna is one of the main components of the radar apparatus, and occupies a large proportion in the weight distribution of the system. In the case of the new phased array antenna of the array type, a considerable portion of the total weight of the antenna system is distributed to the reflecting plate as a mounting surface and an equipotential surface, and thus the light weight design and manufacture of the reflecting plate are significant. How to reduce the weight of the antenna to the maximum extent on the basis of meeting various index requirements is one of feasible technical approaches to manufacturing the reflecting plate by adopting composite materials such as carbon fiber and the like. From the current state of development, the carbon fiber reflecting plate has obvious advantages compared with a metal reflecting plate: not only has obvious weight-reducing advantage, but also has designability and manufacturability.

Chinese patent publication No. CN110265764A discloses a highly integrated light array type radar antenna framework. An external surrounding frame is arranged on the periphery of the back plate, a liquid cooling water path is arranged in the back plate, the back plate is formed by machining an aluminum plate at one time, and cooling liquid enters the back plate from the liquid inlet and flows out from the liquid outlet; the back plate is provided with a plurality of liquid cooling blind plug connectors, and the inside of the external enclosure frame is provided with an antenna longitudinal rib plate, an antenna transverse rib plate and an antenna unit installation slot position; the cavity part in the outer enclosure frame at the front side of the back plate divides the space in the outer enclosure frame into electronic separation chambers through the antenna longitudinal rib plate and the antenna transverse rib plate; the lower space in the outer surrounding frame is provided with an extension separating cavity, the upper space in the outer surrounding frame is provided with an assembly separating cavity, and the cavity part in the outer surrounding frame at the rear side of the back plate is provided with an antenna unit mounting slot position. The antenna framework assembly has the advantages of being compact and reasonable in layout, high in integration level, reliable in structure, light in weight, good in rigidity, high in precision, good in maintainability, fast in heat dissipation and the like. However, the framework is supported by the aluminum material, and compared with the framework supported by the carbon fiber material, the framework is heavier in weight and complex in structural design, a large number of different types of separation cavities are arranged, a large number of plates are consumed, the cost is high, and the weight is relatively heavier.

The antenna of the existing radar system is a flat plate type microstrip unit array antenna taking a reflecting plate as a structural installation base, wherein the reflecting plate consists of a reflecting surface and a back bearing framework. Because this antenna uses the aerostatics as the mount platform, and the radar subassembly module of loading is more, and the mounting point that needs is more, so furthest's realization subtracts heavy and provides more mounting point especially important, so above-mentioned high integrated light array type radar antenna skeleton still is difficult to satisfy the requirement of the lightweight of current antenna reflecting plate and does not set up radar subassembly module mounting point position, is unfavorable for the installation of radar subassembly.

Disclosure of Invention

The technical problem to be solved by the invention is how to reduce the weight of the antenna framework to the maximum extent and provide more mounting points so as to meet the requirements of the existing antenna reflecting plate on light weight and mounting point positions.

The invention solves the technical problems through the following technical means: the utility model provides a carbon fiber antenna skeleton, includes multilayer frame, a plurality of internal joint and a plurality of external joint, multilayer frame forms three-dimensional hollow skeleton, and every layer of frame all forms through the concatenation of rectangle side pipe, and the inside rectangle side pipe of every layer of frame passes through the internal joint and connects, through external joint connection between every layer of frame and the adjacent layer of frame, be equipped with the fastener built-in fitting that is used for installing the antenna cable and be used for installing radar component's equipment built-in fitting on the rectangle side pipe, frame, internal joint, external joint, fastener built-in fitting and equipment built-in fitting all adopt carbon fiber material.

In order to achieve the weight reduction effect to the maximum extent, a framework, an internal connector, an external connector, a wire clamp embedded part and an equipment embedded part in the framework are all made of carbon fiber materials and are integrally assembled, because a plurality of radar assemblies are loaded, a plurality of mounting points need to be provided, in order to meet the requirement, the structural form of the framework is formed by combining a plurality of layers of frameworks, so that enough mounting space can be provided, meanwhile, in order to fix the radar assemblies and cable routing, the wire clamp embedded part and the equipment embedded part are accurately embedded at the corresponding positions of the framework, and the whole framework meets the requirements of light weight and mounting point positions of the existing antenna reflecting plate.

Further, the multilayer frame includes first layer frame, first layer frame is the field word lattice type frame that a plurality of rectangle side pipes formed through the inner joint concatenation, be equipped with the equipment built-in fitting on the rectangle side pipe in the left side of first layer frame, fixedly connected with radar subassembly on the equipment built-in fitting.

Furthermore, the rectangular square pipe at the middle position of the first layer of frame is connected with vertical upward short pipes through external joints, all the short pipes are surrounded into a rectangular grid when viewed from top to bottom, the middle parts of the short pipes on the same rectangular square pipe are connected through the rectangular square pipe, and the rectangular square pipes connected in the middle of all the short pipes are surrounded into a second layer of frame.

Furthermore, the tops of the short pipes on the same rectangular square pipe are connected through the rectangular square pipe, and the rectangular square pipes connected with the tops of all the short pipes form a third-layer frame.

Furthermore, carbon fiber antenna skeleton still includes the slope structure, the triangle-shaped frame that the concatenation formed is managed for a plurality of rectangle side to the slope structure, second floor frame, third layer frame and first layer frame are whole to be enclosed into rectangular hollow frame, a triangle-shaped frame is all connected on the left side and the right side of rectangular hollow frame's leading flank, a triangle-shaped frame is all connected on the left side and the right side of rectangular hollow frame's trailing flank, and the main view direction is upwards seen, rectangular hollow frame's leading flank and the triangle-shaped frame on left side and right side enclose into the trapezoidal of short length down.

Furthermore, the front side face and the rear side face of the rectangular hollow frame are fixedly connected with the mounting side plates, and the size of the mounting side plates is matched with the front side face and the rear side face of the rectangular hollow frame.

Furthermore, the manufacturing process of the mounting side plate comprises the following steps: the method comprises the steps of firstly manufacturing rectangular square pipes, cutting the rectangular square pipes for standby according to the length of the square pipes required by design, manufacturing a groined metal force-bearing embedded part by utilizing a plurality of rectangular square pipes, installing a foam clamp core body into the metal force-bearing embedded part, filling the joint of the foam clamp core body and the metal force-bearing embedded part with foaming glue, wrapping a layer of glue film on the whole outer surface of the spliced foam clamp core body and the metal force-bearing embedded part, paving a carbon fiber prepreg outside by taking the foam clamp core body which is wrapped with the glue film and contains the metal force-bearing embedded part as a male die, packaging with a vacuum bag after paving, vacuumizing, transferring to a hot pressing tank for high-temperature and high-pressure curing and forming, and manufacturing the hanging side plate for standby.

Furthermore, a plurality of radar assemblies are arranged on the rectangular hollow frame and fixedly mounted on the rectangular square pipe through equipment embedded parts.

Furthermore, the mounting points of the wire clamp embedded parts are arranged on the three-dimensional hollow framework according to the antenna routing of practical application.

Furthermore, the wire clamp embedded part and the equipment embedded part are fixed at a preset position on the rectangular square pipe in a rivet pulling and rivet pulling mode.

The invention has the advantages that:

(1) in order to achieve the weight reduction effect to the maximum extent, a framework, an internal connector, an external connector, a wire clamp embedded part and an equipment embedded part in the framework are all made of carbon fiber materials and are integrally assembled, because a plurality of radar assemblies are loaded, a plurality of mounting points need to be provided, in order to meet the requirement, the structural form of the framework is formed by combining a plurality of layers of frameworks, so that enough mounting space can be provided, meanwhile, in order to fix the radar assemblies and cable routing, the wire clamp embedded part and the equipment embedded part are accurately embedded at the corresponding positions of the framework, and the whole framework meets the requirements of light weight and mounting point positions of the existing antenna reflecting plate.

(2) The combined carbon fiber framework forming and pre-embedding positioning technology solves the problem that the deformation of a composite material frame structure is difficult to control in the integral forming process, the forming stress of a carbon fiber pipe fitting is fully released after the carbon fiber pipe fitting is formed, and the plane precision of the assembled framework is ensured through an assembling tool in the later-stage combining process.

(3) The carbon fiber framework has the greatest advantages that the weight is light, the plane precision of the framework can be freely controlled in the later period, and thus, the wall thickness and the pipe diameter of a pipe fitting and an inner joint and an outer joint of the carbon fiber can be controlled to the greatest extent, and the weight advantage is played to the greatest extent.

(4) The metal bearing embedded part in the hanging side plate is designed into a multi-well-shaped combined bearing embedded part through a design principle of central concentrated bearing and balanced stress distribution, and the problems that a single embedded part is easy to pull and damage and the bearing strength is insufficient in a composite material part are solved.

(5) The combined carbon fiber framework forming and pre-embedding positioning technology can position and fix the pre-embedded part on the hollow pipe fitting of the framework through the rivet pulling and riveting technology after the carbon fiber framework structure is combined and formed, and overcomes the defects that the deformation, the displacement and the like of the pre-embedded part are easily caused by high-temperature curing forming of the traditional composite material part after the pre-embedding and the curing forming are carried out together. The rivet-pulling riveting embedded part can accurately fix the position of the embedded part through the positioning tool, is accurate in one-time positioning, and does not need to be corrected and corrected in the later period.

Drawings

Fig. 1 is a schematic overall structure diagram of a carbon fiber antenna framework according to an embodiment of the present invention;

FIG. 2 is a schematic diagram illustrating a riveting between an equipment embedded part and a rectangular square tube in a carbon fiber antenna framework according to an embodiment of the present invention;

FIG. 3 is a schematic diagram illustrating a riveting between an embedded part and a rectangular square tube of a center clamp of a carbon fiber antenna framework according to an embodiment of the present invention;

fig. 4 is a schematic view of an assembly fixture of a carbon fiber antenna framework disclosed in the embodiment of the present invention;

fig. 5 is a schematic view illustrating a manufacturing process of a mounting side plate in a carbon fiber antenna framework according to an embodiment of the present invention;

fig. 6 is a schematic view illustrating an installation of a mounting side plate in a carbon fiber antenna framework according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, a carbon fiber antenna framework comprises a multi-layer framework, a plurality of internal connectors 3 and a plurality of external connectors, the multi-layer frame forms a solid hollow framework 1, each layer of frame is formed by splicing rectangular square tubes 2, the rectangular square tubes 2 in each layer of frame are connected through an internal joint 3, each layer of frame is connected with the adjacent layer of frame through an external joint, the rectangular square pipe 2 is provided with a wire clamp embedded part 5 for installing an antenna cable and an equipment embedded part 6 for installing a radar component 7, the frame, the inner connector 3, the outer connector, the wire clamp embedded part 5 and the equipment embedded part 6 are all made of carbon fiber materials, the outer connector is not shown in the figures, the outer connector has the same effect as the inner connector 3 actually, connection between the rectangular square pipes 2 is completed only for distinguishing connectors at different positions, and therefore the inner connector 3 and the outer connector are used for distinguishing description. And the mounting points of the wire clamp embedded parts 5 are arranged on the three-dimensional hollow framework 1 according to the antenna wiring of practical application. The wire clamp embedded part 5 and the equipment embedded part 6 are fixed at preset positions on the rectangular square tube 2 in a rivet pulling and riveting mode, the installation mode is shown in fig. 2 and 3, and after the wire clamp embedded part 5 and the equipment embedded part 6 are installed, the wire clamp can be installed on the wire clamp embedded part 5 so as to be convenient for restraining and fixing the equipment cable at the later stage; similarly, the radar components 7 are also mounted on the corresponding equipment embedded parts 6, and thus, the manufacturing of the carbon fiber skeleton structure functional body is completed.

Continuing to refer to fig. 1, the multilayer frame includes a first layer frame 101, the first layer frame 101 is a grid-shaped frame formed by splicing a plurality of rectangular square pipes 2 through inner joints 3, an equipment embedded part 6 is arranged on one rectangular square pipe 2 on the left side of the first layer frame 101, and a radar assembly 7 is fixedly connected to the equipment embedded part 6. Adopt the location frock to advance to fix a position the joint in the first layer frame 101 outside during the assembly, including bottom frock frame 14, location cardboard 13 and three-dimensional frame location truss 15 that encloses, bottom frock frame 14 is convenient for the installation of first layer frame 101, bottom frock frame 14 is a rectangle frame, set up a plurality of locating levers that are parallel to each other between two parallel limits on the rectangle frame, equidistant arrangement location cardboard on the locating lever, the intermediate position of bottom frock frame 14 is fixed with the three-dimensional frame location truss 15 that encloses of rectangular hollow framework, three-dimensional frame location truss 15 that encloses is convenient for the installation of second floor frame 102 and third floor frame 103, adopt the mode of setting-out during the location, guarantee that the joint central line of first layer frame 101 and the center of the location cardboard 13 of frock are on the same line, as shown in figure 4.

The rectangle side pipe 2 of the middle part position of first layer frame 101 is connected with vertical ascending nozzle stub 8 through external joint, and all nozzle stubs 8 enclose into the rectangle net from the top down, and the middle part of nozzle stub 8 on same rectangle side pipe 2 is connected through rectangle side pipe 2, and rectangle side pipe 2 that all nozzle stub 8 middle parts are connected encloses into second layer frame 102. The rectangular square tube 2 and the internal joint 3 or the external joint are assembled and fixed by adopting adhesive bonding. The rectangular square tube 2 and the internal joint 3 or the external joint 4 are assembled and fixed by adopting adhesive bonding. The short pipe 8 is the same as the rectangular square pipe 2, and is only defined as the short pipe 8 for convenience of description, all the rectangular frames, the three-dimensional frames and the triangular frames are formed by splicing the rectangular square pipe 2, and only the length of the rectangular square pipe 2 can be adjusted according to needs.

The tops of the short pipes 8 on the same rectangular square pipe 2 are connected through the rectangular square pipe 2, and the rectangular square pipes 2 connected with the tops of all the short pipes 8 enclose a third-layer frame 103.

The carbon fiber antenna framework further comprises a slope structure, the slope structure is a triangular frame 9 formed by splicing a plurality of rectangular square tubes 2, the second layer frame 102, the third layer frame 103 and the first layer frame 101 are integrally formed into a rectangular hollow frame, the left side and the right side of the front side face of the rectangular hollow frame are respectively connected with the triangular frame 9, the left side and the right side of the rear side face of the rectangular hollow frame are respectively connected with the triangular frame 9, and the front side face of the rectangular hollow frame and the triangular frames 9 on the left side and the right side of the front side face of the rectangular hollow frame are formed into a trapezoid with a short upper part and a long lower part when seen from the main view direction.

The front side face and the rear side face of the rectangular hollow frame are fixedly connected with the mounting side plate 10, and the size of the mounting side plate 10 is matched with the front side face and the rear side face of the rectangular hollow frame. The rectangular hollow frame is provided with a plurality of radar assemblies 7, and the radar assemblies 7 are fixedly installed on the rectangular square pipe 2 through equipment embedded parts 6. The manufacturing process of the mounting side plate 10 is as follows: firstly, manufacturing rectangular square pipes 2, cutting the square pipes for standby according to the length of the square pipes required by design, manufacturing a groined metal force-bearing embedded part 11 by utilizing a plurality of rectangular square pipes 2, installing a foam clamp core body 12 into the metal force-bearing embedded part 11, filling the joint of the foam clamp core body 12 and the metal force-bearing embedded part 11 with foaming glue, wrapping a layer of glue film on the whole outer surface of the spliced foam clamp core body 12 and the metal force-bearing embedded part 11, paving carbon fiber prepreg on the outer side of the foam clamp core body 12 wrapped with the glue film and containing the metal force-bearing embedded part 11 as a male die, after paving, packaging by using a vacuum bag, vacuumizing, transferring to a hot pressing tank for high-temperature and high-pressure curing molding, and manufacturing a hanging side plate 10 for standby, as shown in figure 5. Four beams (consisting of four rectangular square tubes 2 made of carbon fibers) on the outer edge of the mounting side plate 10 are spliced through four inner connectors 3 to form a rectangle, then the mounting side plate 10 is buckled into the front side surface and/or the rear side surface of the rectangular hollow frame, and the mounting side plate and the rectangular hollow frame are spliced into a whole through the inner connectors 3, as shown in fig. 6.

Through the technical scheme, the complex middle space framework, namely the rectangular hollow frame, can be assembled preferentially according to the structural characteristics of the framework, and the two wings, namely the triangular frame 9, can be positioned and assembled on the basis of integrating the middle assembly. On the assembly fixture of skeleton, carry out from back to front, from the bottom up's assembly principle, divide into three layer construction with the skeleton in the direction of height, in order furthest's reaching subtracts heavy effect, the frame in the skeleton, internal joint 3, external joint, fastener built-in fitting 5 and equipment built-in fitting 6 all adopt carbon fiber material, whole assembly forms, because the radar subassembly 7 that loads is more, need provide a plurality of mounting points, for satisfying this requirement, the structural style of skeleton is formed by the combination of multilayer frame, thereby can provide sufficient installation space, walk the line in order to fix radar subassembly 7 and cable simultaneously, accurate pre-buried fastener built-in fitting 5 and the equipment built-in fitting 6 in the corresponding position of skeleton, whole skeleton satisfies the requirement of the lightweight of current antenna reflecting plate and installation point location requirement.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.