CN111828445B - Efficient lightweight composite material frame - Google Patents
Efficient lightweight composite material frame Download PDFInfo
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- CN111828445B CN111828445B CN202010723473.XA CN202010723473A CN111828445B CN 111828445 B CN111828445 B CN 111828445B CN 202010723473 A CN202010723473 A CN 202010723473A CN 111828445 B CN111828445 B CN 111828445B
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- composite
- composite material
- frame
- hollow tubular
- beams
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- 239000002131 composite material Substances 0.000 title claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 10
- 239000003733 fiber-reinforced composite Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 238000000748 compression moulding Methods 0.000 claims description 3
- 239000012784 inorganic fiber Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 229920005992 thermoplastic resin Polymers 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000011208 reinforced composite material Substances 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 3
- 238000005520 cutting process Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/18—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using screw-thread elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S5/00—Other constructional members not restricted to an application fully provided for in a single class
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The invention relates to an efficient lightweight composite material frame. The composite material frame comprises at least two composite material tubular beams, wherein the composite material tubular beams are provided with mortise slots, and the composite material hollow tubular beams are fixedly connected through the mortise slots. The mortise slots can be arranged on the composite tubular beams in the same direction, and the mortise slots are not arranged on the composite tubular beams in the other direction, so that the overall rigidity is improved. The connecting part of the two connected composite tubular beams can be a double opening, the opening depth of one composite tubular beam is the wall thickness of the tubular beam, the opening depth of the other composite tubular beam is the whole thickness minus the wall thickness of one side of the composite tubular beam, and a reinforcing block is arranged in the opening of the connecting part. The composite tubular beam is of a continuous structure, and the rigidity and the strength of the frame cannot be reduced due to the connection surface formed by cutting, so that the exertion efficiency of materials can be improved, and the defect of the traditional connection mode of the continuous fiber reinforced composite frame consisting of the beam frame is overcome.
Description
Technical Field
The invention mainly relates to the application field of continuous fiber reinforced composite material grids and frame structures, in particular to a high-efficiency lightweight composite material frame.
Background
Compared with metal materials, the continuous fiber reinforced composite material has the advantages of high specific strength and high specific modulus, and has irreplaceable application advantages in light weight structures. Composite frame structures, in order to ensure lighter weight and greater rigidity, generally use tubular, T-section profiles, which are then joined to form the frame.
The metal material has the characteristic of easy processing, can adopt welding for frame structures, and has simple process and excellent structural strength. Compared with metal materials, the composite material can only be carried out in the modes of co-curing, bonding and mechanical connection, and the processes usually need special dies and special forming equipment, so that the defects of complex process, long production period and high cost are caused. Therefore, the design of the connection mode of the composite material frame plays an important role in realizing higher mechanical property and production efficiency of the frame.
The traditional frame connection composed of beam frames is generally a completely separated part at the connection part of the frame and the beam and the arm, and then the frame is fixed by bonding and mechanical connection, and the fixing mode often causes the rigidity and the strength of the connection part to be weak. Or through connecting piece, for example connecting plate, angle box etc. and this kind of structure can lead to the structure to increase weight obvious, and the connection part probably produces fatigue such as deformation, vibrations in the use simultaneously and leads to bonding face to lose efficacy or the not hard up of mechanical connection department, and then leads to the risk of structure inefficacy.
And the other frame adopts a beam cross laminated structure for splicing, so that a continuous beam structure can be realized, but in order to ensure the rigidity and the shearing resistance of a connecting part and ensure the integral stability of the frame, corner boxes and belt plates are often required to be reinforced and fixed. Since the thickness in the direction perpendicular to the frame is increased, the space utilization is limited, and the weight reduction is also not facilitated.
Disclosure of Invention
Aiming at the defects of the traditional continuous fiber reinforced composite material frame connection mode formed by beam frames, the invention provides a mortise and tenon structure mode connection similar to a Chinese wood structure, so that the frame structure has higher material exertion efficiency.
The technical scheme adopted by the invention is as follows:
the utility model provides a high-efficient lightweight combined material frame, includes two at least combined material tubular beams, is equipped with the mortise hole groove on the combined material tubular beam, passes through mortise hole groove fixed connection between the combined material hollow tubular beam.
Furthermore, mortise slots are formed in the composite material tubular beams in the same direction, and mortise slots are not formed in the composite material tubular beams in the other direction.
Furthermore, the connecting part of the two connected composite tubular beams is a double opening, the opening depth of one composite tubular beam is the wall thickness of the tubular beam, and the opening depth of the other composite tubular beam is the sum of the whole thickness of the composite tubular beam and the wall thickness of a single side, so that the thickness of the two composite tubular beams at the crossed part of the connection is consistent with the thickness of the tubular beam; a reinforcing block is arranged in the opening of the connecting part.
Further, the composite tubular beam is made of a continuous fiber reinforced composite material, wherein the fibers are organic fibers or inorganic fibers.
Further, the composite tubular beam is a resin reinforced composite, wherein the resin is a thermosetting resin or a thermoplastic resin.
Furthermore, the connecting parts of the composite material tubular beams are glued and riveted, so that the sufficient shearing and tensile strength of the connecting parts and the integral rigidity of the frame are ensured.
Furthermore, the two connected composite material tubular beams form a 90-degree included angle.
Furthermore, the assembly tolerance of the mortise slots of the two connected composite material tubular beams is positive, and the single-layer gap is smaller than 0.15mm.
Further, the manufacturing method of the composite material tubular beam is one of the following: reel pipe forming, air bag forming, vacuum bag pressing forming, compression molding forming, autoclave forming, RTM forming, pultrusion forming and winding forming.
Further, the composite material tubular beam is circular or square in shape; the composite material tubular beam is a tubular beam with a uniform section or a non-uniform section.
The invention has the following beneficial effects:
the frame is formed by using hollow tubular beams made of composite materials, mortise grooves similar to mortise structures are formed in the connecting parts of the tubular beams by machining, then the mortise grooves and other tubular beam mortise grooves form 90-degree included angles, the mortise grooves are spliced together by gluing, and the composite material frame can be formed by splicing a plurality of tubular beams with the mortise grooves. The shape of the gap portion can be processed according to the angle of the connected beams, the matching angle is fixed by the matching of the two beams of the connecting portion, and the mutual constraint effect is achieved. Because both beams are of a continuous structure, the problem that the rigidity and the strength of the frame are reduced due to the fact that the connecting surface formed by cutting is not formed is solved, and the utilization efficiency of materials is improved.
Drawings
Fig. 1 is a structural view of a high-efficiency lightweight composite frame.
Fig. 2 is a schematic diagram of a carbon composite (carbon fiber composite) beam with a mortise and tenon structure assembled into a frame structure.
Fig. 3 is a schematic view of a spliced reinforcing block.
In the figure:
1-composite material tubular beam, 2-mortise slot and 3-reinforcing block, wherein 1-1 and 1-2 are two connected composite material tubular beams
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention shall be described in further detail with reference to the following detailed description and accompanying drawings.
Fig. 1 is a structural view of a high-efficiency lightweight composite frame according to an embodiment of the present invention. The composite material frame comprises a plurality of composite material tubular beams, mortise grooves similar to mortise and tenon structures are arranged at connecting positions among the tubular beams, and the composite material tubular beams are spliced together through the mortise grooves to form the composite material frame.
When the composite material frame is manufactured, as shown in fig. 2, a tubular beam 1 of a composite material structure is firstly processed, and then mortise and tenon-like structures 2 are processed according to the frame boundary size. The size of the mortise slot 2 structure is related to the angle of the combined tubular beam 1 workpiece according to the width of the tubular beam 1. The fit tolerance is small, and the size stability of the mortise slot 2 after bonding is ensured. And the joint parts of the mortise slots 2 are bonded by using glue, and the flatness of the combined frame can be ensured by adopting an assembly tool.
In one embodiment of the composite material frame, in order to ensure the strength and rigidity of the frame after assembly, the connection positions of the mortise slot 2 can be mechanically connected by bolts, rivets and other methods. And meanwhile, the connection parts of the mortise slots 2 of the two tubular beams 1 are glued, so that the shearing strength of the connection parts is improved.
In an embodiment of the composite material frame, in order to ensure the overall rigidity of the frame or enhance the rigidity of a certain plane normal direction formed by beam frames, a mortise slot 2 structure may be processed on a tubular beam 1 in the same direction, and the mortise slot 2 is not processed on a tubular beam 1 in another direction, as shown in fig. 2.
In one embodiment of the composite material frame, the connecting portion of the tubular beams 1 is a double opening, which means that two tubular beams connected at a right angle are opened at the connecting portion, as shown in fig. 3, the opening depth of one tubular beam 1-1 is the wall thickness of the tubular beam, and the opening depth of the other tubular beam 1-2 is the partial size excluding the wall thickness on one side (i.e. the opening depth is the whole thickness minus the wall thickness on one side of the tubular beam), so that the thickness at the cross-shaped connecting portion is the same as the thickness of the tubular beam after the two tubular beams are connected. A reinforcing block 3 is added at the connecting part, and the reinforcing block 3 is placed in the opening of the tubular beam 1A, so that the bonding area and the riveting strength can be improved. The reinforcing blocks may be solid or sandwich structures, the same material as the beam.
In one embodiment of the composite frame, the composite tubular beams are made of a continuous fiber reinforced composite material, wherein the fibers are organic fibers or inorganic fibers. Manufacturing a tubular beam by using a continuous fiber reinforced composite material, respectively processing mortise and groove 2 structures on two connected tubular beams 1, and then connecting the two tubular beams into a frame structure.
In one embodiment of the composite frame, the material of the tubular beams 1 is a resin reinforced composite structure. Resins include various types of thermosetting and thermoplastic resins.
In one embodiment of the composite material frame, the assembly tolerance of the mortise hole grooves 2 of the two connected pipe beams is positive, and the single-layer gap is smaller than 0.15mm, so that the matching rigidity of the two pipe beams is ensured.
In one embodiment of the composite material frame, the connecting parts of the two tubular beams 1 need to be glued and riveted, so that the sufficient shearing and tensile-compression strength of the connecting parts and the integral rigidity of the frame are ensured.
In the composite material frame, the manufacturing method of the tubular beam 1 comprises the process modes of reel pipe forming, air bag forming, vacuum bag pressing forming, compression molding forming, autoclave forming, RTM forming, pultrusion forming, winding forming and the like.
In the composite material frame, the shape of the tubular beam 1 comprises a circle, a square and the like, and the tubular beam can have a uniform section or a non-uniform section.
One specific example of the preparation of the composite frame of the present invention is provided below. In the example, T300-grade carbon fiber epoxy resin prepreg cloth is used as a raw material, and a hollow Liang Tan composite beam with the size of 600 multiplied by 20mm and the wall thickness of 2mm is manufactured by an autoclave process. The design frame is a 3 multiplied by 3 square grid, every 180mm of each tubular beam is equidistantly processed with a mortise slot with the depth of 18mm, and the cross section of the mortise slot forms an included angle of 90 degrees with the length direction of the beam. And then processing 9 reinforcing blocks of 20 multiplied by 16, wherein the reinforcing blocks use the same prepreg cloth, the inner part adopts PU foam sandwich, and the wall thickness is 1mm. And coating glue solution on the surface of each reinforcing block, filling the glue solution into the mortise slot, splicing the beams together, and clamping and curing the beams outside. After curing, 4 holes with a diameter of 3.1mm were drilled in the joint and fastened using M3 bolts. Finally assembling into a square frame with the side length of 600 mm.
The foregoing disclosure of the specific embodiments of the present invention and the accompanying drawings is directed to an understanding of the present invention and its implementation, and it will be appreciated by those skilled in the art that various alternatives, modifications, and variations may be made without departing from the spirit and scope of the invention. The present invention should not be limited to the disclosure of the embodiments and drawings in the specification, and the scope of the present invention is defined by the scope of the claims.
Claims (8)
1. The efficient lightweight composite material frame is characterized by comprising at least two composite material hollow tubular beams, wherein the composite material hollow tubular beams are provided with mortise slots and fixedly connected through the mortise slots; the connecting part of the two connected composite material hollow tubular beams is a double opening, the opening depth of one composite material hollow tubular beam is the wall thickness of the tubular beam, the opening depth of the other composite material hollow tubular beam is the whole thickness of the composite material hollow tubular beam minus the wall thickness of one side, and the thickness of the two connected composite material hollow tubular beams at the crossed part is consistent with the thickness of the tubular beam; a reinforcing block is arranged in the opening of the connecting part; the composite material hollow tubular beam is made of a continuous fiber reinforced composite material or a resin reinforced composite material.
2. The efficient weight reducing composite frame of claim 1, wherein the continuous fiber reinforced composite is an organic fiber or an inorganic fiber.
3. The efficient lightweight composite frame of claim 1, wherein said resin reinforced composite is a thermosetting resin or a thermoplastic resin.
4. The efficient lightweight composite frame as claimed in claim 1, wherein the connecting portions of said composite hollow tubular beams are glued and riveted to ensure sufficient shear and tensile strength of the connecting portions and overall rigidity of the frame.
5. The efficient lightweight composite frame of claim 1 wherein the two connected composite hollow tubular beams are at a 90 ° angle.
6. The efficient lightweight composite frame as claimed in claim 1, wherein the assembly tolerance of mortise slots of two connected composite hollow tubular beams is positive, and the single layer gap is less than 0.15mm.
7. The efficient lightweight composite frame as set forth in claim 1, wherein said composite hollow tubular beams are made by a method selected from the group consisting of: reel pipe forming, air bag forming, vacuum bag pressing forming, compression molding forming, autoclave forming, RTM forming, pultrusion forming and winding forming.
8. The efficient lightweight composite frame of claim 1, wherein said composite hollow tubular beams are circular or square in shape; the composite material hollow tubular beam is a tubular beam with a uniform section or a non-uniform section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723473.XA CN111828445B (en) | 2020-07-24 | 2020-07-24 | Efficient lightweight composite material frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010723473.XA CN111828445B (en) | 2020-07-24 | 2020-07-24 | Efficient lightweight composite material frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111828445A CN111828445A (en) | 2020-10-27 |
| CN111828445B true CN111828445B (en) | 2022-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010723473.XA Active CN111828445B (en) | 2020-07-24 | 2020-07-24 | Efficient lightweight composite material frame |
Country Status (1)
| Country | Link |
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| CN (1) | CN111828445B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013392B (en) * | 2022-07-12 | 2023-01-24 | 常州市新创智能科技有限公司 | Pultrusion straight pipe connecting structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004009888U1 (en) * | 2004-06-23 | 2004-09-23 | Kadeya Enterprise Co., Ltd., Yuan Lin Chen | Table leg mounting system comprises square recesses in top of leg. Into which frame sections are inserted so that they are at right angles to each other, sections having cut-outs in form of cross-halving joint |
| DE102012101628A1 (en) * | 2012-02-28 | 2013-08-29 | Paul Hettich Gmbh & Co. Kg | Support column for supporting a furniture part |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3927950A (en) * | 1975-01-24 | 1975-12-23 | G S Beckwith Gilbert | Half-lapped tube joint |
| FR2487650A1 (en) * | 1980-07-30 | 1982-02-05 | Zagni Louis | Dismantlable frame for folding table - has table top with two crosspieces screwed beneath, and two mortises into which two leg supports fit |
| US5024036A (en) * | 1988-08-12 | 1991-06-18 | Johnson David W | Interlocking support structures |
| US20090175679A1 (en) * | 2008-01-03 | 2009-07-09 | Bretford Manufacturing, Inc. | Joint configuration for metal tubes |
| DE102010014722A1 (en) * | 2010-04-12 | 2012-03-01 | Friedrich Reich | Connection point for shelf, has elements e.g. plate- or bar-like elements, with section and recess, respectively, and inclination surfaces cooperated with each other such that movement of one element against another element is prevented |
| ITUA20164705A1 (en) * | 2016-06-28 | 2017-12-28 | Goppion Spa | Museum showcase with supporting frame including tubular beams connected by joints with a rationalized structure |
| ES2685267B1 (en) * | 2017-03-31 | 2019-07-17 | Iriarte Christian Gonzalez | Joint retention system |
| DE102017129443B4 (en) * | 2017-12-11 | 2020-04-16 | Ritter Möbel-Manufaktur Gmbh & Co. Kg | Connection system, especially for shelves |
-
2020
- 2020-07-24 CN CN202010723473.XA patent/CN111828445B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004009888U1 (en) * | 2004-06-23 | 2004-09-23 | Kadeya Enterprise Co., Ltd., Yuan Lin Chen | Table leg mounting system comprises square recesses in top of leg. Into which frame sections are inserted so that they are at right angles to each other, sections having cut-outs in form of cross-halving joint |
| DE102012101628A1 (en) * | 2012-02-28 | 2013-08-29 | Paul Hettich Gmbh & Co. Kg | Support column for supporting a furniture part |
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| Publication number | Publication date |
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| CN111828445A (en) | 2020-10-27 |
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