CN117734182A - Triangular carbon fiber truss and assembly method thereof - Google Patents
Triangular carbon fiber truss and assembly method thereof Download PDFInfo
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- CN117734182A CN117734182A CN202311517329.0A CN202311517329A CN117734182A CN 117734182 A CN117734182 A CN 117734182A CN 202311517329 A CN202311517329 A CN 202311517329A CN 117734182 A CN117734182 A CN 117734182A
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 130
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 128
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims description 20
- 210000001503 joint Anatomy 0.000 claims abstract description 14
- 239000000853 adhesive Substances 0.000 claims description 11
- 230000001070 adhesive effect Effects 0.000 claims description 11
- 238000005498 polishing Methods 0.000 claims description 10
- 244000137852 Petrea volubilis Species 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007788 roughening Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Joining Of Building Structures In Genera (AREA)
Abstract
The carbon fiber truss with the triangular structure comprises a plurality of carbon fiber straight pipes, wherein the carbon fiber straight pipes are connected and combined into a triangular structure through carbon fiber connectors, and the carbon fiber straight pipes and the carbon fiber connectors are combined and butted through assembly gaps, and are solidified and formed. The carbon fiber truss integrated assembly forming difficult problem of triangle-shaped structure is solved to this scheme, adopts carbon fiber to connect and carbon fiber straight tube combination butt joint, avoids adding other metal joint subassembly structures, can effectively lighten the whole weight of structure, increases the holistic reliability of product simultaneously, also increases rigidity and the intensity of product.
Description
Technical Field
The invention belongs to the field of carbon fiber composite materials, and particularly relates to a carbon fiber truss with a triangular structure and an assembly method thereof.
Background
Because the carbon fiber composite material has the advantages of light weight, high strength and the like, the carbon fiber truss structure is widely applied to the fields of aerospace and the like. Truss structures are generally composed of a certain number of straight pipes and multi-directional joints, and the joints are generally in the form of two-way, three-way or multi-directional joints, so that the truss structure has better structural stability, and the general structural unit forms of the truss are designed into triangles, as shown in fig. 1. The truss of the triangular structure has good stability, but also has the characteristic of self-sealing structure, the connectors in two-way, four-way or multi-way structural forms are required to meet the assembly relation of straight pipes in multiple directions, and under the condition that the angle or dimensional tolerance of the straight pipes with any intention is improperly matched, the whole truss cannot be assembled, and the assembly difficulty is very high.
In order to realize the integrated assembly of the triangular truss, the existing truss assembly mode usually adopts the modes of screwing, riveting or welding and the like to realize the integrated assembly among all parts.
However, due to the hard and brittle characteristics of the carbon fiber material, the problem of damage strength of the carbon fiber workpiece such as layering and splitting in the process of screwing and riveting the hole Shi Yifa is solved, and the connection process such as screwing and riveting is not suitable to be directly performed; the carbon fiber is a nonmetallic material and can not be welded, so the connection technology of the carbon fiber joint in the prior art is mainly gluing, and screw connection and riveting are auxiliary. In order to realize the assembly of the carbon fiber truss, a sectional design is usually adopted when the truss is designed, the connecting part of the connector and the straight pipe is designed to be of a metal structure, the metal connector is made of isotropic materials, the metal connector has good ductility and machinability, can adapt to the hole making process requirements of screw connection and riveting, and the truss is finally assembled into a whole by adopting the connecting modes of welding, screw connection or riveting and the like at the metal part during the assembly. The design increases the overall weight of the product, and the reliability of the whole product is reduced due to the increase of the number of the connecting units, and meanwhile, compared with a truss assembled by an integrated design, the truss is relatively weak in strength and rigidity.
Therefore, in the triangular carbon fiber structure truss, the design of the assembly method suitable for the triangular carbon fiber structure truss has very important significance.
Disclosure of Invention
The invention aims to solve the technical problem that the carbon fiber truss with the triangular structure is difficult to assemble, overcomes the defects and the shortcomings in the background art, and provides the carbon fiber truss with the triangular structure and an assembling method thereof.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
the carbon fiber truss with the triangular structure comprises a plurality of carbon fiber straight pipes, wherein the carbon fiber straight pipes are connected and combined into a triangular structure through carbon fiber connectors, an assembly gap with the width of 0.1-0.2mm is reserved at the butt joint part of the carbon fiber straight pipes and the carbon fiber connectors, an adhesive is coated on the assembly gap, the carbon fiber straight pipes and the carbon fiber connectors are combined and butt-jointed through the assembly gap, and the carbon fiber straight pipes and the carbon fiber connectors are solidified and formed.
The triangle-shaped structure is the structure form that uses more commonly in the structural design, and it has the structure firm, intensity is good, characteristics such as the reliability is high, but the truss of triangle-shaped structure has the problem of butt joint assembly difficulty, and this application provides a characteristic structural carbon fiber finished piece's cementing mode, and does not adopt spiro union, riveting mode, can enough reduce material weight, can provide firm linking property again.
Preferably, the carbon fiber joint comprises one or more of a two-way joint, a four-way joint, a five-way joint or a six-way joint.
Preferably, when the assembly gaps of the carbon fiber straight tube and the carbon fiber connector are combined and butted, the carbon fiber straight tube and the carbon fiber connector are made to slide relatively through the vibrator so as to be folded.
Preferably, the assembly gap of the carbon fiber connector is arranged on the outer side of the carbon fiber tube, and the assembly gap of the carbon fiber straight tube is arranged on the inner side of the carbon fiber tube.
Under the same technical conception, the invention also provides an assembly method of the carbon fiber truss with the triangular structure, which comprises the following steps:
(1) Polishing the butt joint part of the carbon fiber straight pipe and the carbon fiber joint to form an assembly gap with the width of 0.1-0.2 mm;
(2) Coating an adhesive on the assembly gap;
(3) Assembling and butting the carbon fiber straight tube and the butting part of the carbon fiber connector, installing a vibrator at the butting part, and starting the vibrator to assist the folding of the carbon fiber straight tube and the carbon fiber connector during assembling and butting;
(4) And (5) solidifying the adhesive, and integrally forming the carbon fiber truss.
Preferably, the polishing method of the assembly gap in the step (1) comprises the following steps: and (3) firstly polishing and coarsening along the axial direction of the carbon fiber straight pipe and the carbon fiber joint by using sand paper, and then polishing and coarsening along the direction perpendicular to the axial direction until the surface of the assembly clearance is matt.
Preferably, after the assembly gap in the step (1) is polished and formed, pre-assembling is firstly carried out, the assembly gap between the straight pipe and the joint is matched, and the inspection is carried out by using a thickness gauge so that the assembly gap between the straight pipe and the joint reaches 0.1-0.2mm, and if the assembly gap is not met, the glue joint surface is polished intermittently until the assembly gap is met.
Preferably, the vibrator frequency in step (3) is 100HZ to 1000HZ.
Compared with the prior art, the invention has the beneficial effects that:
(1) The carbon fiber truss integrated assembly forming difficult problem of triangle-shaped structure is solved to this scheme, adopts carbon fiber to connect and carbon fiber straight tube combination butt joint, avoids adding other metal joint subassembly structures, can effectively lighten the whole weight of structure, increases the holistic reliability of product simultaneously, also increases rigidity and the intensity of product.
(2) The assembly method of the scheme has wider applicability, can be well applied to carbon fiber truss structures with complex structures, and has simple equipment requirements and low construction cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic plan view of a triangular truss structure;
FIGS. 2 and 3 are exploded views of a triangular carbon fiber truss of example 1 of the present application;
FIG. 4 is a process flow diagram of example 1 of the present application;
FIGS. 5 and 6 are schematic views of the assembly gap of embodiment 1 of the present application;
FIG. 7 is a schematic view of the mounting position of the vibrator according to embodiment 1 of the present application;
FIGS. 8 and 9 are block diagrams illustrating the assembly of example 1 of the present application;
FIGS. 10, 11, 12 are schematic views of the vibrator start-up sequence of embodiment 1 of the present application;
FIG. 13 is a schematic diagram of the assembly completion of embodiment 1 of the present application;
wherein, 1, two-way joint (1); 2. a two-way joint (2); 3. a two-way joint (3); 4. a two-way joint (4); 5. a four-way joint (1); 6. a four-way joint (2); 7. a four-way joint (3); 8. a four-way joint (4); 9. a five-way joint (1); 10. a five-way joint (2); 11. a six-way joint; 12. a straight pipe B (1); 13. a straight pipe B (2); 14. a straight pipe B (3); 15. a straight pipe B (4); 16. a straight pipe B (5); 17. a straight pipe B (6); 18. a straight pipe B (7); 19. a straight pipe B (8); 20. a straight pipe C (1); 21. a straight pipe C (2); 22. a straight pipe C (3); 23. a straight pipe C (4); 24. a straight pipe C (5); 25. a straight pipe C (6); 26. a straight pipe C (7); 27. a straight pipe C (8); 28. a straight pipe D (1); 29. a straight pipe D (2); 30. a straight pipe A (1); 31. a straight pipe A (2); 32. a vibrator (1); 33. a vibrator (2); 34. a vibrator (3); 35. a vibrator (4); 36. a vibrator (5); 37. a vibrator (6); 38. a vibrator (7); 39. a vibrator (8); 40. a vibrator (9); 41. a vibrator r; 42. a vibrator 11.
Detailed Description
The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown, for the purpose of illustrating the invention, but the scope of the invention is not limited to the specific embodiments shown.
Unless defined otherwise, all technical and scientific terms used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the scope of the present invention.
Unless otherwise specifically indicated, the various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or may be prepared by existing methods.
Example 1:
the carbon fiber truss with the triangular structure is shown in fig. 1, 2 and 3, fig. 1 is a schematic plan view of the carbon fiber truss with the triangular structure, fig. 2 and 3 are exploded views of the carbon fiber truss with the triangular structure, the carbon fiber truss with the triangular structure comprises a plurality of carbon fiber straight pipes, the carbon fiber straight pipes are connected and combined into a triangular structure through carbon fiber connectors, an assembly gap of 0.1-0.2mm is reserved at the butt joint part of the carbon fiber straight pipes and the carbon fiber connectors, an adhesive is coated on the assembly gap, the carbon fiber straight pipes and the carbon fiber connectors are combined and butt-jointed through the assembly gap, and the carbon fiber straight pipes are solidified and formed.
A triangular carbon fiber truss includes a two-way joint (1)1, a two-way joint (2)2, a two-way joint (3)3), a two-way joint (4)4), a four-way joint (1)5, a four-way joint (2)6), a four-way joint (3)7), a four-way joint (4)8), a five-way joint (1)9, a five-way joint (2))10, a six-way joint 11, a straight pipe B (1))12, a straight pipe B (2) 13, a straight pipe B (3) 14, a straight pipe B (4) 15, a straight pipe B (5) 16, a straight pipe B (6) 17, a straight pipe B (7) 18, a straight pipe B (8) 19, a straight pipe C (1) 20, a straight pipe C (2 21, a straight pipe C (3) 22, a straight pipe C (4 23, a straight pipe C (5) 24, a straight pipe C (6) 25, a straight pipe C (7) 26, a straight pipe C (8) 27, a straight pipe D (1) 28, a straight pipe D (2.29, A (1 30, A (2) 31).
The specific implementation method of the scheme of the invention is carried out according to the process flow chart shown in fig. 4 in sequence:
1. parts preparation
And (5) performing length taking processing on all the assembly parts according to the corresponding size requirements.
2. Polishing assembly surface
And (3) at the position shown in fig. 5, polishing and roughening the inner surface of the carbon fiber straight pipe and the outer surface of the carbon fiber joint by using 120-400-mesh sand paper until the surface of the product is matt, wherein the formed cementing surface is an assembly gap.
3. Preassembly
As shown in fig. 6, the assembly gap between the carbon fiber straight tube and the carbon fiber connector is matched, and the assembly gap between the carbon fiber straight tube and the carbon fiber connector is tested by using a thickness gauge, so that the width of the assembly gap between the carbon fiber straight tube and the carbon fiber connector reaches between 0.1 and 0.2mm, and the assembly gap is intermittently polished until the assembly gap is matched when the assembly gap is not matched.
4. Gluing
And (3) preparing a plurality of structural adhesives, uniformly stirring, uniformly coating the structural adhesives on an assembly gap between the carbon fiber straight pipe and the carbon fiber joint, and airing for 5-10min.
5. Assembly
Placing all the carbon fiber straight pipes and the carbon fiber connectors on a platform or a specific tool plane, and fixing the vibrators on all the carbon fiber connectors to enable the vibrators to face upwards, wherein the frequency of the vibrators can be preset to be 100-1000 HZ.
All the carbon fiber straight pipes and the carbon fiber connectors are initially placed and positioned, the positions of the vibrators are positioned, and the positioning positions of the vibrators are shown in fig. 7.
6. Folding
Step 1
The carbon fiber connectors and the carbon fiber straight pipes are assembled in a butt joint manner according to the grouping shown in fig. 8:
1) Straight pipe B (5) 16/straight pipe B (6) 17/five-way joint (1)9;
2) Straight pipe B (2) 13/straight pipe C (1) 20/four-way joint (1)5;
3) Straight pipe C (2) 21/straight pipe B (1) 12/four-way joint (2)6;
4) Straight pipe D (1) 28/straight pipe C (3) 22/straight pipe C (4) 23/straight pipe C (5) 24/straight pipe C (6) 25/straight pipe D (2) 29/six-way joint 11;
5) Straight pipe A (2) 31/straight pipe C (7)/26 straight pipe B (4) 15/four-way joint (4)8;
6) Straight pipe A (1) 30/straight pipe C (8) 27/straight pipe B (3) 14/four-way joint (3)7;
7) Straight pipe B (7) 18/straight pipe B (8) 19/five-way joint (2) 10;
step 2
The six-way joint of the center is kept fixed, and force is applied in the direction shown in fig. 9, so that the carbon fiber straight pipe and the carbon fiber joint are gathered towards the center at the same time.
Step 3
When the arrow indicates that the fitting clearance carbon fiber joint is in contact with the carbon fiber straight pipe as shown in FIG. 10, the vibrator (1) 32, the vibrator (4) 35, the vibrator (8) 39, the vibrator 11 42) are turned on while maintaining the applied directional force.
Step 4
When the arrow indicates that the fitting clearance carbon fiber joint is brought into contact with the carbon fiber straight pipe as shown in FIG. 11, the vibrator (2) 33, the vibrator (3) 34, the vibrator (5) 36, the vibrator (7) 38, the vibrator (9) 40, the vibrator unit 41) is turned on while maintaining the applied directional force.
Step 5
When the arrow indicates the fitting clearance carbon fiber joint is in contact with the carbon fiber straight pipe as shown in fig. 12, the vibrator (6) is turned on while maintaining the application of the directional force (37).
Step 6
And after all the vibrators are folded, removing all the vibrators, and positioning all the carbon fiber connectors and the carbon fiber straight tubes by using the tool positioner, so that a carbon fiber truss product with a triangular structure as shown in fig. 13 is finally obtained.
7. Curing
Standing for over 8H, and finishing assembly after the adhesive is completely solidified.
Claims (8)
1. The carbon fiber truss with the triangular structure is characterized by comprising a plurality of carbon fiber straight pipes, wherein the carbon fiber straight pipes are connected and combined into the triangular structure through carbon fiber connectors, an assembly gap with the width of 0.1-0.2mm is reserved at the butt joint part of the carbon fiber straight pipes and the carbon fiber connectors, an adhesive is coated on the assembly gap, and the carbon fiber straight pipes and the carbon fiber connectors are in butt joint through the assembly gap combination and are solidified and formed.
2. The triangular structure carbon fiber truss of claim 1 wherein the carbon fiber joints include one or more of a two-way joint, a four-way joint, a five-way joint, or a six-way joint.
3. The carbon fiber truss with triangular structure according to claim 1, wherein when the assembly gaps of the carbon fiber straight tube and the carbon fiber joint are combined and butted, the carbon fiber straight tube and the carbon fiber joint are caused to slide relatively by the vibrator so as to be folded.
4. The carbon fiber truss of claim 1 wherein the carbon fiber joint assembly gap is outboard of the carbon fiber tube and the carbon fiber straight tube assembly gap is inboard of the carbon fiber tube.
5. The method for assembling the carbon fiber truss with the triangular structure is characterized by comprising the following steps of:
(1) Polishing the butt joint part of the carbon fiber straight pipe and the carbon fiber joint to form an assembly gap with the width of 0.1-0.2 mm;
(2) Coating an adhesive on the assembly gap;
(3) Assembling and butting the carbon fiber straight tube and the butting part of the carbon fiber connector, installing a vibrator at the butting part, and starting the vibrator to assist the folding of the carbon fiber straight tube and the carbon fiber connector during assembling and butting;
(4) And (5) solidifying the adhesive, and integrally forming the carbon fiber truss.
6. The assembly method of claim 5, wherein the polishing method of the assembly gap in step (1) comprises: and (3) firstly polishing and coarsening along the axial direction of the carbon fiber straight pipe and the carbon fiber joint by using sand paper, and then polishing and coarsening along the direction perpendicular to the axial direction until the surface of the assembly clearance is matt.
7. The assembly method of claim 5, wherein after the assembly gap is polished and formed in the step (1), pre-assembling is performed, the assembly gap between the straight pipe and the joint is matched, and the assembly gap between the straight pipe and the joint is checked by using a thickness gauge, so that the assembly gap between the straight pipe and the joint reaches 0.1-0.2mm, and if the assembly gap is not matched, the adhesive joint surface is polished intermittently until the assembly gap is matched.
8. The method of assembly of claim 5, wherein the vibrator frequency of step (3) is from 100HZ to 1000HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311517329.0A CN117734182A (en) | 2023-11-14 | 2023-11-14 | Triangular carbon fiber truss and assembly method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311517329.0A CN117734182A (en) | 2023-11-14 | 2023-11-14 | Triangular carbon fiber truss and assembly method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117734182A true CN117734182A (en) | 2024-03-22 |
Family
ID=90249734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311517329.0A Pending CN117734182A (en) | 2023-11-14 | 2023-11-14 | Triangular carbon fiber truss and assembly method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117734182A (en) |
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2023
- 2023-11-14 CN CN202311517329.0A patent/CN117734182A/en active Pending
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