CN116788371A - Whole car skeleton made of carbon fiber fabric composite material and preparation method thereof - Google Patents
Whole car skeleton made of carbon fiber fabric composite material and preparation method thereof Download PDFInfo
- Publication number
- CN116788371A CN116788371A CN202210427602.XA CN202210427602A CN116788371A CN 116788371 A CN116788371 A CN 116788371A CN 202210427602 A CN202210427602 A CN 202210427602A CN 116788371 A CN116788371 A CN 116788371A
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- carbon fiber
- fiber fabric
- fabric composite
- composite material
- pipe wall
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- 239000002131 composite material Substances 0.000 title claims abstract description 149
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 136
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 131
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 131
- 239000004744 fabric Substances 0.000 title claims abstract description 121
- 238000002360 preparation method Methods 0.000 title description 8
- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 37
- 238000010586 diagram Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000010030 laminating Methods 0.000 claims description 6
- 238000009958 sewing Methods 0.000 claims description 6
- 238000009954 braiding Methods 0.000 claims description 4
- 238000005253 cladding Methods 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 238000009941 weaving Methods 0.000 abstract description 2
- 230000035882 stress Effects 0.000 description 21
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 6
- 239000003292 glue Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000002759 woven fabric Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000006355 external stress Effects 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D29/00—Superstructures, understructures, or sub-units thereof, characterised by the material thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
- B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes
- B29L2031/602—Multi-tubular articles, i.e. composed of a plurality of tubes composed of several elementary tubular elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
- B29L2031/608—Honeycomb structures
Abstract
The invention discloses a carbon fiber fabric composite material whole vehicle framework which is made of a three-dimensional framework prepared by annularly connecting carbon fiber fabric composite material honeycomb pipes supported by carbon fiber fabric composite materials, wherein the inside of each honeycomb pipe is supported in a star shape, annular supporting frames are arranged in honeycomb holes of the star-shaped supports in the honeycomb pipes, and each annular supporting frame is composed of a winding pipe or a weaving pipe. The invention inserts the tubular structural member and the joint of the honeycomb support made of the carbon fiber fabric composite material to form the whole vehicle framework, so that the borne force of the vehicle framework can be distributed on each branch of the honeycomb structure when the vehicle framework is stressed, and the bearing force is uniformly distributed on the structural member, thereby enhancing the integral stress degree of the structural member.
Description
The scheme is a divisional application, the application number of the main application is CN201611268639.3, the application date is 2016-12-31, and the patent name is a carbon fiber fabric composite material whole car skeleton and a preparation method thereof.
Technical Field
The invention relates to the technical field of carbon fiber fabric composite material application, in particular to a whole car skeleton of a carbon fiber fabric composite material and a preparation method thereof.
Background
Along with the rapid development of modern technology, high requirements are put on materials, and carbon fibers have the characteristics of high strength, high temperature resistance, corrosion resistance, fatigue resistance, light weight, capability of bearing large tensile force and the like which are obviously higher than those of steel, aluminum and the like, belong to typical high-performance fibers, and have overwhelming advantages compared with the traditional metal materials. Carbon fibers, in addition to being used alone as a heat insulating material, are generally added as reinforcing materials to materials such as resins, metals, ceramics, concrete, etc., to constitute carbon fiber composite materials, and carbon fiber composite materials have been used in many fields.
Under the global environment of energy conservation and emission reduction, the automobile weight is becoming trend, the application of plastics, composite materials and the like on automobiles is becoming wider and wider, and the fiber composite materials are adopted to replace the existing metal structure, so that the method is an effective way for reducing the automobile exhaust pollution and achieving energy conservation. The carbon fiber is a fibrous carbon material with carbon content more than ninety percent, has high strength and elastic modulus, and can be made into various high-performance components capable of meeting the requirements of various fields through the selection of a matrix and fibers and the optimal design of the content and distribution of the carbon fiber.
On the traditional automobile, only one percent of gasoline is used for transporting passengers, the rest is used for the motion of the automobile, and the fiber composite material is used for replacing steel, so that the weight of the automobile is reduced by more than half, the weight reduction effect is fifty percent compared with that of a metal material and thirty percent compared with that of an aluminum material, and in addition, the fiber composite material has the advantages of light weight, high strength, good designability, integrated parts, good impact resistance, good corrosion resistance, easiness in forming and the like as an automobile part. At present, the fiber composite material is practically applied to parts such as automobile brake pads, hubs and the like, and the application to the integral framework of the automobile is less.
Disclosure of Invention
Aiming at the problems, the invention aims to provide a light-weight high-strength carbon fiber fabric composite material whole vehicle framework and a preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
scheme one: the whole car skeleton is made of a three-dimensional frame which is formed by splicing a carbon fiber fabric composite honeycomb tube and a carbon fiber composite connector.
The fiber woven fabric composite material honeycomb tube supported by the fiber woven fabric composite material refers to a laminated fiber woven fabric composite material stitched by a suture line, and is radially supported by taking the suture line as a supporting shaft to form a star-shaped support; or the fiber fabric composite material support refers to a laminated fiber fabric composite material stitched by a suture line, part of the laminated fiber fabric composite material is wrapped into a wrapping pipe to form a wrapping pipe support in radial connection by taking the suture line as a supporting shaft, and the other part of the laminated fiber fabric composite material stitched by the suture line is in radial support by taking the suture line as the supporting shaft to form a radial and wrapping pipe composite support.
The fiber fabric composite honeycomb tube supported by the fiber fabric composite refers to a laminated fiber fabric composite stitched by a suture thread, and is respectively wrapped into wrapping tubes to form a wrapping tube support which is connected in a radial manner by taking the suture thread as a supporting shaft.
The fiber fabric composite material is bent along the pipe wall from the supporting shaft to the outside of the pipe wall, and is combined with the pipe wall to form a part of the pipe wall, so that the whole pipe wall and the supporting material inside the whole pipe wall are integrally connected through the fiber fabric composite material bent along the pipe wall.
The number of the supporting shafts in the pipe wall of the carbon fiber fabric composite material is not less than 2, and the supporting shafts are connected and supported by the carbon fiber fabric composite material.
The carbon fiber composite material connector is provided with a plug connector, the plug connector is provided with a carbon fiber sticking hook in a whole body, and the carbon fiber sticking hook is reversely inclined towards the plug connection direction.
The carbon fiber composite material joint is in a Y-shaped branch shape, a T-shaped branch shape or a cross-shaped branch shape, and the main pipe and the branch pipe of the tubular structural member are connected not only by the pipe wall, but also by the support shaft in the pipe.
The method comprises the following steps: 1) Drawing a three-dimensional diagram of a required structural member;
2) Manufacturing a mould diagram of a structural member core mould according to the three-dimensional diagram, and manufacturing the structural member core mould, wherein a core mould column is arranged on the core mould corresponding to the honeycomb hole;
3) Manufacturing a mold drawing of the outer mold of the structural part according to the three-dimensional drawing and manufacturing the outer mold of the structural part;
4) Determining the plane shape of each fiber fabric composite material used for supporting according to the space shape of each fiber fabric composite material in the three-dimensional drawing structural member;
5) Cutting the fiber fabric composite prepreg according to the planar shape of step 4), and determining and cutting the pipe wall prepreg according to steps 4) and 5), as well;
6) Determining the suture line of the prepreg according to the three-dimensional map;
7) Laminating each prepreg to be laminated according to the determined suture line position;
8) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
9) The stitched laminated prepreg sheets are shaken out, honeycomb holes formed by the prepreg sheets correspond to core mold columns of the core mold according to a three-dimensional diagram, the core mold columns are inserted into the corresponding honeycomb holes, and the outer prepreg is coated on the outer side of the core mold columns;
10 Coating the core mould with the pipe wall prepreg to form the pipe wall;
11 A core mould which is coated with the pipe wall prepreg is plugged into the outer mould;
12 Heating and curing the core mold or heating and curing the outer mold, or heating and curing the core mold and the outer mold simultaneously, and then taking out the core mold and the outer mold to obtain the required structural member.
13 The prepared carbon fiber fabric composite honeycomb tube and the carbon fiber fabric composite joint are spliced according to the whole vehicle frame structure to prepare the whole vehicle frame.
Scheme II: the utility model provides a carbon fiber fabric combined material whole car skeleton which characterized in that: the whole car skeleton is made of a three-dimensional frame which is formed by annularly connecting carbon fiber fabric composite material honeycomb tubes supported by carbon fiber fabric composite materials, wherein the tube inner supports of the honeycomb tubes are star-shaped supports, the honeycomb holes of the star-shaped supports in the honeycomb tubes are hollow strip-shaped body supports, and the hollow strip-shaped body supports are made of the carbon fiber fabric composite materials.
The in-tube support of the fiber braided fabric composite honeycomb tube refers to a laminated carbon fiber fabric composite material stitched by a suture line, and the suture line is used as a support shaft to form a radial support, so that a star-shaped support is formed.
The carbon fiber fabric composite material is bent along the pipe wall from the supporting shaft to the pipe wall of the honeycomb pipe, and is combined with the pipe wall to form a part of the pipe wall, so that the whole pipe wall and the supporting material inside the whole pipe wall are integrally connected through the carbon fiber fabric composite material bent along the pipe wall.
The number of the supporting shafts in the pipe wall of the carbon fiber fabric composite material is not less than 2, and the supporting shafts are connected and supported by the carbon fiber fabric composite material.
The method comprises the following steps: 1) Drawing a three-dimensional diagram of a required structural member;
2) Drawing a support structure of the whole vehicle framework according to a three-dimensional diagram, wherein the support is used for supporting the fiber fabric prepreg, and is a hollow strip support after heating and curing;
3) Determining the plane shape of each carbon fiber fabric composite material used for supporting according to the space shape of each carbon fiber fabric composite material in the three-dimensional drawing structural member;
4) Cutting the carbon fiber fabric composite material prepreg according to the plane shape of the step 3);
5) Determining the suture line of the prepreg according to the three-dimensional map;
6) Laminating each prepreg to be laminated according to the determined suture line position;
7) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
8) The stitched laminated prepreg sheets are shaken out, the honeycomb holes formed in the prepreg sheets correspond to the strip supports according to the three-dimensional diagram, and the prepreg is coated on the outer sides of the strip supports;
9) The pipe wall prepreg is used for supporting and cladding the framework to form the pipe wall;
10 Sewing the framework supports coated with the pipe walls together to prepare a whole vehicle framework;
11 Heating and solidifying the whole vehicle framework
Scheme III: the utility model provides a carbon fiber fabric combined material whole car skeleton which characterized in that: the whole car skeleton is made of a three-dimensional frame which is formed by annularly connecting carbon fiber fabric composite material honeycomb pipes supported by carbon fiber fabric composite materials, wherein the supports in the honeycomb pipes are star-shaped supports, annular supporting frames are arranged in honeycomb holes of the star-shaped supports in the honeycomb pipes, and the annular supporting frames are formed by winding pipes or braiding pipes.
The in-tube support of the fiber braided fabric composite honeycomb tube refers to a laminated carbon fiber fabric composite material stitched by a suture line, and the suture line is used as a support shaft to form a radial support, so that a star-shaped support is formed.
The carbon fiber fabric composite material is bent along the pipe wall from the support shaft to the outside of the pipe wall of the annular support frame, and is combined with the pipe wall to form a part of the pipe wall, so that the whole pipe wall and the support material inside the whole pipe wall are integrally connected through the carbon fiber fabric composite material bent along the pipe wall.
The number of the supporting shafts in the pipe wall of the carbon fiber fabric composite material is not less than 2, and the supporting shafts are connected and supported by the carbon fiber fabric composite material.
The method comprises the following steps: 1) Drawing a three-dimensional diagram of a required structural member;
2) Drawing a supporting structure diagram of the whole vehicle framework according to the three-dimensional diagram and manufacturing a framework support, wherein the support is used for supporting the fiber fabric prepreg and is a heated and solidified winding pipe or a braided pipe;
3) Determining the plane shape of each carbon fiber fabric composite material used for supporting according to the space shape of each carbon fiber fabric composite material in the three-dimensional drawing structural member;
4) Cutting the carbon fiber fabric composite material prepreg according to the plane shape of the step 3);
5) Determining the suture line of the prepreg according to the three-dimensional map;
6) Laminating each prepreg to be laminated according to the determined suture line position;
7) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
8) The stitched laminated prepreg sheets are shaken out, honeycomb holes formed in the prepreg sheets correspond to the framework supports according to the three-dimensional diagram, and the outer prepreg is coated on the outer sides of the framework supports;
9) The pipe wall prepreg is used for supporting and cladding the framework to form the pipe wall;
10 Sewing the framework supports coated with the pipe walls together to prepare a whole vehicle framework;
11 Heating and solidifying the whole vehicle framework.
The invention inserts the tubular structural member and the joint of the honeycomb support made of the carbon fiber fabric composite material to form the whole vehicle framework, so that the borne force can be distributed on each branch of the honeycomb when the vehicle framework is stressed, the bearing force is uniformly distributed on the structural member, the whole stress degree of the structural member is enhanced, the common carbon fiber composite material can bear very strong pressure, but the bearing force capability is poor, the tubular support of the structural member adopts the honeycomb carbon fiber fabric composite material for supporting, the structural member can bear the pressure to a certain extent, and the stress range and the stress direction of the structural member are increased. The honeycomb structural member is supported by the structural member, so that the material and the weight are reduced compared with the solid structural member, the cost is saved, and the structural member has stronger stress capability compared with a hollow structural member.
Meanwhile, the car skeleton prepared by the carbon fiber fabric composite structural member has the advantages of light weight, high stress intensity, high temperature resistance, good impact resistance and the like compared with the traditional car or airplane.
Drawings
Fig. 1 is a schematic view of a radial support structure 1.
Fig. 2 is a schematic view of the radial support structure 2.
Fig. 3 is a schematic view of the radial support structure 3.
Fig. 4 is a schematic view of the radial support structure 4.
Fig. 5 is a schematic view 1 of a composite support structure of a radiation-wrapped tube.
Fig. 6 is a schematic view of a composite support structure of a radiation-wrapped tube 2.
Fig. 7 is a schematic view of the structure of the wrapped tubular support.
Fig. 8 is a schematic view of the structure of the radial support with mold 1.
Fig. 9 is a schematic view of the structure of the radial support with mold 2.
Fig. 10 is a schematic view of the structure of the radiation and wrap tube composite support with the mold.
Fig. 11 is a schematic structural view of a wrapped tubular support with a die.
Fig. 12 is a schematic structural view of a vehicle body frame 1.
Fig. 13 is a schematic structural view of the vehicle body frame 2.
Fig. 14 is a schematic view of the structure of the annular skeleton support.
Fig. 15 is an enlarged schematic view of the portion a in fig. 13.
Fig. 16 is a schematic view of a fiber composite joint structure 1.
Fig. 17 is a schematic view of a fiber composite joint structure 2.
Fig. 18 is a schematic structural view of the vehicle body frame 3.
Fig. 19 is a schematic view 1 of the structure of the hollow bar support block.
Fig. 20 is a schematic view of the structure of the hollow bar support block 2.
Fig. 21 is a schematic structural view of a honeycomb tube of multilayer honeycomb cells.
Detailed Description
For a better understanding of the present invention, those skilled in the art will further describe the present invention with reference to the following detailed description:
as shown in fig. 1 to 7, a carbon fiber fabric composite structural member is formed in a tubular shape, and the tubular structural member is a carbon fiber fabric composite honeycomb tube supported by a carbon fiber fabric composite; the carbon fiber fabric composite material comprises straight-line knitting and twill knitting, and is carbon fiber or glass fiber.
As shown in fig. 1 to fig. 4, the fiber braid composite honeycomb tube supported by the carbon fiber fabric composite refers to a laminated carbon fiber fabric composite stitched by a stitching line, the stitching line is used as a supporting shaft to form a star-shaped support, and then a layer of carbon fiber fabric composite is coated on the outer layer of the star-shaped support as a tube wall to form the honeycomb tube; or as shown in fig. 5 and 6, the carbon fiber fabric composite material support refers to a laminated carbon fiber fabric composite material stitched by a suture line, a part of the laminated carbon fiber fabric composite material is wrapped into a wrapping pipe to form a wrapping pipe support in which the suture line is radially connected with a support shaft, and the other part of the laminated carbon fiber fabric composite material stitched by the suture line is radially supported by the suture line with the support shaft to form a radial and wrapping pipe composite support. The radial support or the radial and wrapping pipe composite support can transmit the force to the whole support through the radial laminated branch connected with the pipe wall when the structural member is stressed, so that the stress is uniformly distributed on the structural member, and deformation or breakage of the structural member due to unbalanced stress is avoided; the support is made into a radial shape, so that the support has stronger endurance strength than a hollow pipe, and meanwhile, compared with a solid pipe, the support saves materials and cost.
As shown in fig. 7, the carbon fiber fabric composite honeycomb tube supported by the carbon fiber fabric composite refers to a laminated carbon fiber fabric composite stitched by a suture thread, which is respectively wrapped into wrapped tubes to form wrapped tube supports 107 which are radially connected by taking the suture thread as a support shaft, and then a layer of carbon fiber fabric composite is wrapped on the star-shaped support outer layer as a tube wall 207 to form the honeycomb tube; the pipe supported by the wrapping pipe is used as a transmission shaft or a support column, so that the stress intensity of the transmission shaft or the support column can be enhanced to a greater extent, and the transmission shaft or the support column is not easy to bend, deform or break.
As shown in fig. 21, the honeycomb tube has a cross section centered on the axis, and includes a plurality of layers of honeycomb holes 16 formed outwardly, and an outermost layer of tube wall 15. The honeycomb tube comprising the multi-layer honeycomb holes 16 can be used as a transmission shaft or a support column, has the advantage of light weight, can transfer the stress through radial branches at the edges when the tube wall 15 is stressed, so that the stress is uniformly distributed on the whole support, the honeycomb support can correspondingly reduce the tube wall stress, and compared with the transmission shaft or the support column with the traditional structure, the tube wall supported by the radial carbon fiber fabric composite honeycomb at the edge is not easy to bend and deform under the condition of the same stress, so that the service life of the transmission shaft or the support column is prolonged.
As shown in fig. 1, the carbon fiber fabric composite material is bent along the pipe wall 201 from the support shaft to the pipe wall 201, and is combined with the pipe wall to form a part of the pipe wall, so that the whole pipe wall and the support material 101 inside the whole pipe wall are integrally connected through the carbon fiber fabric composite material bent along the pipe wall. The carbon fiber fabric composite material extends to the pipe wall and is bent along the pipe wall, so that the stress of the pipe wall can be transferred to the carbon fiber fabric composite material support piece in the pipe, and the stress capability of the pipe is enhanced.
After the carbon fiber fabric composite material is from the supporting shaft to the pipe wall, the carbon fiber fabric composite material continuously stretches out of the pipe wall and is used as a part externally connected with a structural part, so that the stress of the externally connected part can be transferred to the supporting material, the supporting material is integrally stressed, and the mechanical strength of the structural part is improved. As shown in fig. 2, the support shaft 102 in the tube is radially supported, and the support shaft 102 in the tube has two ends extending out of the tube wall 202 to form two externally connected components 302, and as shown in fig. 6, the support shaft 106 in the tube is radially-wrapped tube composite support, and the support shaft 106 in the tube has two ends extending out of the tube wall 206 to form two externally connected components 306; as shown in fig. 3, one end of the support shaft 103 in the tube extends out of the tube wall 203, and the structural member comprises an externally connected component 303, and as shown in fig. 5, the support shaft 105 in the tube is a radial-wrapping tube composite support, and one end of the support shaft 105 in the tube extends out of the tube wall 205 to form an externally connected component 305.
As shown in fig. 4, the carbon fiber fabric composite material extends from the support shaft 104 to the pipe wall 204, and then bends along the pipe wall 204 to form a part of the pipe wall, and then extends out of the pipe wall together with the support material after bending to the support material extending out of the pipe wall, so as to form a part 304 of the structural member for external connection, so that the stress of the external connection part can be transferred to the pipe wall and the support material therein, and the overall stress is uniform, thereby enhancing the stress intensity of the pipe.
The number of the supporting shafts in the pipe wall is not less than 2, the supporting shafts are connected and supported by the carbon fiber fabric composite material, the supporting shafts can better ensure uniformity of stress, and stress intensity of the structural member is improved.
The structural members may be designed with different outer profile shapes of cross sections at different locations along the axis of the tube, or with the same outer profile shape but different sizes, as desired.
As shown in fig. 15, the cross section of the carbon fiber composite material honeycomb tube 801 is provided with supports 802 along the direction of the support axis, and the supports on the cross section can strengthen the stress strength in the axial direction, so that the structural member is not easy to deform or bend in the axial direction.
According to the requirements of the connecting components, the tubular structural part can be designed into a branch shape, namely a Y-shaped branch shape, a T-shaped branch shape or a cross-shaped branch shape, and the main pipe of the tubular structural part is connected with the pipe wall of the branch pipe, and the supporting shaft in the pipe is also connected; the connecting parts of the support shaft in the pipe or the pipe wall are all connected by stitching. The pipe walls of the main pipe and the branch pipe are connected with the supporting shaft, so that the consistency of internal and external stress can be ensured, and deformation or damage caused by dislocation due to inconsistent internal and external stress of a structural member is avoided.
The structural members are spliced or connected in a ring mode to form an integral three-dimensional frame structure, and then the integral framework required by assembly is assembled. As shown in fig. 12 and 13, the carbon fiber composite material is assembled into a whole vehicle skeleton. Fig. 12 is a schematic diagram of a whole vehicle framework 7 prepared by loop connection, and an annular support 9 used in the loop connection process is shown in fig. 14, wherein the annular support 9 is a winding pipe or a braiding pipe made of a carbon fiber fabric composite material after heating and curing. Fig. 13 shows a finished automobile skeleton 8 prepared by plugging, as shown in fig. 15, a supporting component 802 is axially arranged on a structural component 801 used on the finished automobile skeleton 8, fig. 18 shows a finished automobile skeleton formed by plugging without the supporting component axially, and a plug-in connector is a carbon fiber fabric composite connector. The structural member is provided with a support, so that the mechanical strength of the whole vehicle can be further enhanced.
An off-road vehicle skeleton prepared from the carbon fiber fabric composite structural member.
A car skeleton prepared from the carbon fiber fabric composite structural member.
A passenger car skeleton prepared from the carbon fiber fabric composite structural member.
A helicopter framework prepared from the carbon fiber fabric composite structural member.
A passenger plane skeleton prepared from the carbon fiber fabric composite structural member.
A drive shaft or support column made from the carbon fiber fabric composite structural member.
The preparation method of the carbon fiber fabric composite structural member comprises the following steps:
1) Drawing a three-dimensional diagram of a required structural member;
2) Manufacturing a mould diagram of a structural member core mould according to the three-dimensional diagram, and manufacturing the structural member core mould, wherein a core mould column is arranged on the core mould corresponding to the honeycomb hole;
3) Manufacturing a mold drawing of the outer mold of the structural part according to the three-dimensional drawing and manufacturing the outer mold of the structural part;
4) Determining the plane shape of each carbon fiber fabric composite material used for supporting according to the space shape of each carbon fiber fabric composite material in the three-dimensional drawing structural member;
5) Cutting the carbon fiber fabric composite prepreg according to the planar shape of the step 4), and determining and cutting the pipe wall prepreg according to the steps 4) and 5);
6) Determining the suture line of the prepreg according to the three-dimensional map;
7) Laminating each prepreg to be laminated according to the determined suture line position;
8) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
9) The stitched laminated prepreg sheets are shaken out, honeycomb holes formed by the prepreg sheets correspond to core mold columns of the core mold according to a three-dimensional diagram, the core mold columns are inserted into the corresponding honeycomb holes, and the outer prepreg is coated on the outer side of the core mold columns;
10 Coating the core mould with the pipe wall prepreg to form the pipe wall;
11 A core mould which is coated with the pipe wall prepreg is plugged into the outer mould;
12 Heating and curing the core mold or the outer mold or heating and curing the core mold and the outer mold simultaneously.
In the step 9), the outer prepreg sheet needs to extend out of the pipe wall to serve as a connecting piece, the prepreg sheet is reserved and does not cover the outer side of the core mold column, and the rest is covered on the outer side of the core mold column.
The pipe wall prepreg sheet required to be used as a connecting piece and the supporting prepreg sheet extending out of the pipe wall are overlapped to jointly extend out of the pipe wall.
And sewing the overlapped prepreg sheets which jointly extend out of the pipe wall together, and plugging the prepreg sheets into an external mold matched with the external mold, and continuing other steps.
Fig. 8 to 11 are schematic views of a pipe wall support structure according to the present invention, which partially comprise a core mold and an outer mold during the process of manufacturing the pipe wall support structure. As shown in fig. 8, a laminate prepreg sheet 101 as a support is inserted into a core mold 501, the laminate extending from the core mold is folded, a carbon fiber woven composite material is coated on the outer layer as a pipe wall 201, and the carbon fiber woven composite material coated on the core mold is sleeved into an outer mold 601, and then heated and cured; as shown in fig. 9, the laminated prepreg sheet 102 as a support is inserted into the core mold 502, then the laminated sheet partially extending out of the core mold 502 is folded, the laminated sheet partially extending out of the pipe wall 202 is extended out together with the pipe wall as the connecting member 302, the carbon fiber fabric composite material is coated on the outer layer as the pipe wall 202, then the carbon fiber fabric composite material coated on the core mold is sleeved into the outer mold 602, and then the outer mold is heated and cured; as shown in fig. 10, the laminated prepreg sheet 105 as a support is inserted into the core mold 505, then the laminated sheet partially extending out of the core mold 505 is wrapped into a wrapped tube, the laminated sheet partially extending out of the tube wall 205 is extended out together with the tube wall as the connecting member 305, the carbon fiber woven composite material is wrapped as the tube wall 205 on the outer layer, then the carbon fiber woven composite material wrapped around the core mold is sleeved into the outer mold 605, and then it is heated and cured; as shown in fig. 11, a laminate prepreg 107 as a support is inserted into a core mold 507, the laminate extending from the core mold 507 is wound into a roll pipe, the carbon fiber woven composite material is covered on the outer layer as a pipe wall 207, and the carbon fiber woven composite material covering the core mold 507 is fitted into an outer mold 607 of a corresponding structure, and then heated and cured.
The whole vehicle framework is formed by splicing and assembling a carbon fiber fabric composite structural member and a carbon fiber fabric composite connector; as shown in fig. 16 and 17, the carbon fiber composite connector 10 is provided with a plug connector 11, the plug connector 11 is provided with a carbon fiber sticking hook 12 in a general way, and the carbon fiber sticking hook 12 is inclined towards the opposite direction of the plug connection; the plug shown in fig. 16 is a plurality of round tubes having the same outer diameter, and the plug shown in fig. 17 is a honeycomb tube having a plurality of radial support plates disposed therein. The plug is equipped with carbon fiber and glues the hair and colludes, and carbon fiber glues the hair and colludes to the reverse slope of grafting direction, and the plug can insert the inside grafting pipe that is equipped with soft fiber and glue the hair smoothly, and when reverse direction was pulled out, carbon fiber glues the hair and colludes and can catch on soft fiber and glue the hair to prevent that the grafting pipe from coming off in the plug, firm in connection can not cause the harm to plug and grafting pipe.
The whole car skeleton is formed by annular skeleton supports prepared from carbon fiber fabric composite materials in a ring connection mode, and structural parts supported by the annular skeleton are carbon fiber fabric composite material structural parts supported in a star shape in a tube.
The preparation method of the whole vehicle framework prepared by loop connection comprises the following steps:
1) Drawing a three-dimensional diagram of a required structural member;
2) Drawing a supporting structure diagram of the whole vehicle framework according to the three-dimensional diagram and manufacturing a framework support, wherein the support is used for supporting the fiber fabric prepreg and is a winding pipe or a weaving pipe;
3) Determining the plane shape of each carbon fiber fabric composite material used for supporting according to the space shape of each carbon fiber fabric composite material in the three-dimensional drawing structural member;
4) Cutting the carbon fiber fabric composite material prepreg according to the plane shape of the step 3);
5) Determining the suture line of the prepreg according to the three-dimensional map;
6) Laminating each prepreg to be laminated according to the determined suture line position;
7) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
8) The stitched laminated prepreg sheets are shaken out, the corresponding framework supports are arranged on the honeycomb holes formed by the prepreg sheets according to the three-dimensional diagram, the prepreg sheets are wrapped in the corresponding honeycomb holes, and the outer prepreg is wrapped outside the framework supports;
9) The pipe wall prepreg is used for supporting and cladding the framework to form the pipe wall;
10 Sewing the framework supports coated with the pipe walls together to prepare a whole vehicle framework;
11 Heating and solidifying the whole vehicle framework.
The framework support is an annular winding pipe or an annular braiding pipe prepared from a carbon fiber fabric composite material, or is a carbon fiber hollow strip body support block. As shown in fig. 19 and 20, the carbon fiber hollow bar support block of fig. 19 is used for supporting the straight line portion, the carbon fiber hollow bar support block of fig. 20 is used for transitional supporting of the bending portion, two ends of the carbon fiber hollow bar support block are of a closed structure, and the center of the carbon fiber hollow bar support block is of a hollow structure.
And step 8) of supporting the honeycomb holes corresponding to the framework, namely placing the buffed laminated prepreg sheets into the framework according to the position of the cavity in the three-dimensional graph structure, then sewing the covered laminated prepreg sheets at the intersection, and covering the framework in the cavity to play a role in supporting the laminated prepreg.
The preparation method of the carbon fiber composite material joint provided with the carbon fiber sticking hook comprises the following steps:
(1) The organic fiber is changed into flame-resistant fiber through thermo-oxidative stabilization treatment, so that the fiber is not melted and not burnt under high temperature carbonization, the fiber state is kept continuously, and then roasting carbonization is carried out under high temperature in inert atmosphere, so that part of carbon and other non-carbon atoms of the organic fiber are lost, and a fibrous substance taking carbon as a main component, namely carbon fiber, is formed;
(2) Taking a water-soluble plastic pipe, and forming inclined holes on the whole body of the plastic pipe;
(3) Carbon fibers are implanted into the inclined holes of the plastic pipe through a hair implantation machine;
(4) Outer mold is sleeved outside the plastic pipe;
(5) Adding a foam plastic model between the outer die and the plastic pipe;
(6) Adding water into the water-soluble plastic pipe to dissolve, and then inserting the water-soluble plastic pipe into the core mold;
(7) A cylindrical cavity is formed between the core mould and the foam plastic model, light alloy is poured into the cylindrical cavity, and the foam plastic model is pyrolyzed and gasified under the heat action of liquid metal;
(8) And after the liquid metal is cooled and solidified, taking out the core mould to form the plug with the carbon fiber sticking hook.
Claims (5)
1. The utility model provides a carbon fiber fabric combined material whole car skeleton which characterized in that: the whole car skeleton is made of a three-dimensional frame which is formed by annularly connecting carbon fiber fabric composite material honeycomb pipes supported by carbon fiber fabric composite materials, wherein the supports in the honeycomb pipes are star-shaped supports, annular supporting frames are arranged in honeycomb holes of the star-shaped supports in the honeycomb pipes, and the annular supporting frames are formed by winding pipes or braiding pipes.
2. The carbon fiber fabric composite whole vehicle skeleton according to claim 1, wherein: the in-tube support of the fiber braided fabric composite honeycomb tube refers to a laminated carbon fiber fabric composite material stitched by a suture line, and the suture line is used as a support shaft to form a radial support, so that a star-shaped support is formed.
3. The carbon fiber fabric composite whole vehicle skeleton according to claim 2, wherein: the carbon fiber fabric composite material is bent along the pipe wall from the support shaft to the outside of the pipe wall of the annular support frame, and is combined with the pipe wall to form a part of the pipe wall, so that the whole pipe wall and the support material inside the whole pipe wall are integrally connected through the carbon fiber fabric composite material bent along the pipe wall.
4. A carbon fiber fabric composite whole vehicle skeleton according to claim 3, wherein: the number of the supporting shafts in the pipe wall of the carbon fiber fabric composite material is at least 2, and the supporting shafts are connected and supported by the carbon fiber fabric composite material.
5. The method for preparing the carbon fiber fabric composite material whole vehicle skeleton according to claims 1-4, which is characterized in that: the method comprises the following steps: 1) Drawing a three-dimensional diagram of a required structural member;
2) Drawing a supporting structure diagram of the whole vehicle framework according to the three-dimensional diagram and manufacturing a framework support, wherein the support is used for supporting the fiber fabric prepreg and is a heated and solidified winding pipe or a braided pipe;
3) Determining the plane shape of each carbon fiber fabric composite material used for supporting according to the space shape of each carbon fiber fabric composite material in the three-dimensional drawing structural member;
4) Cutting the carbon fiber fabric composite material prepreg according to the plane shape of the step 3);
5) Determining the suture line of the prepreg according to the three-dimensional map;
6) Laminating each prepreg to be laminated according to the determined suture line position;
7) Stitching the laminated prepregs according to the positions of the stitching lines, wherein manual stitching or stitching machine stitching can be adopted;
8) The stitched laminated prepreg sheets are shaken out, honeycomb holes formed in the prepreg sheets correspond to the framework supports according to the three-dimensional diagram, and the outer prepreg is coated on the outer sides of the framework supports;
9) The pipe wall prepreg is used for supporting and cladding the framework to form the pipe wall;
10 Sewing the framework supports coated with the pipe walls together to prepare a whole vehicle framework;
11 Heating and solidifying the whole vehicle framework.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210427602.XA CN116788371A (en) | 2016-12-31 | 2016-12-31 | Whole car skeleton made of carbon fiber fabric composite material and preparation method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210427602.XA CN116788371A (en) | 2016-12-31 | 2016-12-31 | Whole car skeleton made of carbon fiber fabric composite material and preparation method thereof |
| CN201611268639.3A CN108263496A (en) | 2016-12-31 | 2016-12-31 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611268639.3A Division CN108263496A (en) | 2016-12-31 | 2016-12-31 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
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| CN116788371A true CN116788371A (en) | 2023-09-22 |
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| CN202210427602.XA Pending CN116788371A (en) | 2016-12-31 | 2016-12-31 | Whole car skeleton made of carbon fiber fabric composite material and preparation method thereof |
| CN201611268639.3A Withdrawn CN108263496A (en) | 2016-12-31 | 2016-12-31 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611268639.3A Withdrawn CN108263496A (en) | 2016-12-31 | 2016-12-31 | Carbon fabric composite material vehicle skeleton and preparation method thereof |
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| CN112976610A (en) * | 2021-02-07 | 2021-06-18 | 西安交通大学 | Manufacturing method of carbon fiber column lattice truss sandwich structure |
| CN113255056B (en) * | 2021-05-06 | 2022-12-27 | 中国第一汽车股份有限公司 | Design method of integral type carbon fiber composite hub |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1033498C (en) * | 1992-03-14 | 1996-12-11 | 北京航空航天大学 | "Three base circle" winding shaping process for single tube type three-direction composite material load-carrying member |
| DE59711849D1 (en) * | 1996-10-08 | 2004-09-16 | Rcc Regional Compact Car Ag Ku | PLASTIC MOLDED PART WITH A CONSTRUCTION STRUCTURE |
| CN201597636U (en) * | 2009-09-29 | 2010-10-06 | 中山大学 | Triad structure lightweight electric automobile main structure |
| US20120104799A1 (en) * | 2010-10-29 | 2012-05-03 | Aptera Motors, Inc. | Automotive vehicle composite body structure |
| US8668247B2 (en) * | 2012-04-23 | 2014-03-11 | GM Global Technology Operations LLC | Magnesium-composite structures with enhanced design |
| DE102014206002A1 (en) * | 2014-03-31 | 2015-10-01 | Bayerische Motoren Werke Aktiengesellschaft | Carrier for a car body shell |
| CN203958341U (en) * | 2014-07-22 | 2014-11-26 | 中国科学院宁波材料技术与工程研究所 | Electronlmobil and body in white thereof |
| CN104590397B (en) * | 2015-01-12 | 2017-05-10 | 湖南湖大艾盛汽车技术开发有限公司 | Application method for section structure of lightweight car body |
| JP6488760B2 (en) * | 2015-02-26 | 2019-03-27 | 日産自動車株式会社 | Body structure |
| CN205150117U (en) * | 2015-07-21 | 2016-04-13 | 易路达自行车(天津)有限公司 | Honeycomb formula car frame tube material |
| CN205256457U (en) * | 2015-12-14 | 2016-05-25 | 常州神鹰碳塑复合材料有限公司 | Carbon -fibre composite header board crossbeam |
| CN106239985A (en) * | 2016-07-28 | 2016-12-21 | 无锡信大气象传感网科技有限公司 | A kind of enhanced type composite material bar structure |
| CN106184399B (en) * | 2016-08-23 | 2019-01-29 | 北京新能源汽车股份有限公司 | The manufacturing method of the top cover of the top cover of vehicle, vehicle and vehicle |
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2016
- 2016-12-31 CN CN202210427602.XA patent/CN116788371A/en active Pending
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