CN110886747B - Carbon fiber composite rod joint - Google Patents
Carbon fiber composite rod joint Download PDFInfo
- Publication number
- CN110886747B CN110886747B CN201911242197.9A CN201911242197A CN110886747B CN 110886747 B CN110886747 B CN 110886747B CN 201911242197 A CN201911242197 A CN 201911242197A CN 110886747 B CN110886747 B CN 110886747B
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- CN
- China
- Prior art keywords
- rod
- force transmission
- composite material
- carbon fiber
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 68
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000005192 partition Methods 0.000 claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 31
- 239000003292 glue Substances 0.000 claims abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 11
- 238000005452 bending Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 229910001374 Invar Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
- F16B7/04—Clamping or clipping connections
- F16B7/0406—Clamping or clipping connections for rods or tubes being coaxial
- F16B7/0413—Clamping or clipping connections for rods or tubes being coaxial for tubes using the innerside thereof
- F16B7/042—Clamping or clipping connections for rods or tubes being coaxial for tubes using the innerside thereof with a locking element, e.g. pin, ball or pushbutton, engaging in a hole in the wall of at least one tube
-
- 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
- F16B7/20—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections using bayonet connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finishing Walls (AREA)
Abstract
The invention provides a carbon fiber composite rod joint which comprises a base and force transmission tiles, wherein the base comprises a flange, a central cylinder arranged on the flange and at least two radial partition plates symmetrically arranged on the outer wall of the central cylinder, the composite rod is provided with a cutting groove in clearance fit with the partition plates, the cutting groove penetrates through the partition plates, so that the inner wall of the composite rod is in clearance fit with the outer wall of the central cylinder, the force transmission tiles are arranged between the two partition plates and used for extruding and fixing the composite rod, and the number of the force transmission tiles is the same as that of the partition plates. The composite material rod and the base are bonded into a whole through the separated force transmission tiles, the glue layer has adaptability to assembly stress in the bonding process, the assembly stress of the cured composite material rod and the base is small, and the stability of the whole structure is high.
Description
Technical Field
The invention relates to the field of aerospace structures, in particular to a carbon fiber composite rod joint.
Background
The carbon fiber composite material rod is widely applied to the field of aerospace structures, and particularly the low-linear-expansion carbon fiber composite material rod is mostly applied to a support structure of an effective load with high requirement on an on-orbit thermal deformation index. The rod piece is connected and assembled with other pieces through the rod joints at the two ends. Limited by the processes of carbon fiber composite material layer winding and demolding, the two ends of the composite material rod cannot be directly manufactured into joints integrated with the rod, and only the rod piece and the joints are manufactured respectively and then assembled into a whole. The conventional composite rod joint is in the form of a sleeve, and the joint is composed of a flange and a bonding sleeve area, wherein the bonding sleeve area is a cylindrical surface matched with the outer diameter or the inner diameter of the rod, and is bonded with two ends of the composite rod through a glue layer. The joint has the advantages of high bending rigidity and the defects that the bonding area of the rod and the bonding sleeve area of the joint are of a complete integral structure, pressure cannot be applied to the glue layer in the bonding process, the defect of glue shortage bonding is easily caused after the glue layer of the bonding area is solidified, and the connection strength of the joint and the rod is influenced.
Disclosure of Invention
The invention aims to provide a carbon fiber composite rod joint, which aims to solve the technical problems that in the prior art, as a bonding area of a composite rod and a joint bonding sleeve area are of an integrated structure, pressure cannot be applied to a glue layer in a bonding process, and the bonding defect of glue shortage occurs after the glue layer in the bonding area is cured, so that the connection strength of the joint and the composite rod is influenced.
In order to solve the technical problem, the application provides a carbon fiber composite rod joint, which comprises a base and force transmission tiles, wherein the base comprises a flange, a central cylinder arranged on the flange, and at least two radial partition plates symmetrically arranged on the outer wall of the central cylinder,
the composite material rod is provided with a cutting groove which is in clearance fit with the partition plate, the cutting groove penetrates through the partition plate, so that the inner wall of the composite material rod is in clearance fit with the outer wall of the central cylinder,
the force transmission tiles are arranged between the two partition plates and used for extruding and fixing the composite material rods, and the number of the force transmission tiles is the same as that of the partition plates.
Preferably, the force transmission tile comprises a first plane section, an arc section and a second plane section which are sequentially connected, the first plane section and the second plane section are respectively connected with two adjacent partition plates, and the inner wall of the arc section is in clearance fit with the outer wall of the composite material rod.
Preferably, the flange is provided with a limiting table for limiting the relative position between the composite material rod and the base along the axis.
Preferably, a plurality of radial positioning convex surfaces are symmetrically arranged on the outer wall of the central cylinder.
Preferably, the number of the partition plates is three.
Preferably, a reinforcing rib is arranged between the flange and the annular limiting table for reinforcing connection.
Preferably, the first plane section and the second plane section of the force transmission tile are bonded with the partition plate through glue,
and the inner concave surface of the arc section of the force transmission tile is bonded with the outer wall of the composite material rod through glue.
Preferably, the first planar section of the force transfer tile, the partition plate and the second planar section of the adjacent force transfer tile are connected and positioned by anti-drop pins.
Preferably, the force transmitting tiles are of thin-walled construction.
Preferably, the force transfer tiles are of a low coefficient of linear expansion material matching the linear expansion coefficient of the composite rods.
The invention has the beneficial effects that:
1) according to the invention, the composite material rod and the base are bonded into a whole through the separated force transmission tiles, the glue layer has adaptability to the assembly stress in the bonding process, the assembly stress of the cured composite material rod and the base is small, and the stability of the whole structure is high.
2) The composite material rod and the base are connected through three symmetrically distributed bonding areas, and when the joint bears bending moment in any direction, the three bonding areas can bear stress together, so that the bending resistance of the joint is improved.
3) According to the invention, the composite material rod and the base are transitionally bonded together through the force transfer tiles positioned on the outer sides of the composite material rod and the base, pressure is conveniently applied to the glue layer in the bonding process, the glue layer in the bonding area is enabled to be uniform and consistent through pressure extrusion, the bonding quality is improved, and the probability of bonding defects is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of a carbon fiber composite rod joint provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a disassembled structure of a carbon fiber composite rod joint provided by an embodiment of the invention;
FIG. 3 is a schematic structural view of a carbon fiber composite rod provided by an embodiment of the present invention;
FIG. 4 is a schematic view of a force-transmitting tile configuration provided by an embodiment of the present invention;
FIG. 5 is a schematic view of a base structure provided in an embodiment of the present invention;
FIG. 6 is an elevation view of a carbon fiber composite rod joint provided by an embodiment of the present invention;
fig. 7 is a sectional view taken along line a-a of fig. 6.
Reference numerals:
1. a composite rod; 2. force transfer tiles; 3. anti-drop pins; 4. a base;
1-1, pole segment; 1-2, a rod bonding zone; 1-3, grooving; 1-4, positioning the inner wall;
2-1, a first plane section; 2-2, arc section; 2-3, a second planar segment;
4-1, flange; 4-2, reinforcing ribs; 4-3, a partition plate; 4-4, a central cylinder;
4-5, radial positioning surface; 4-6 and a rod limiting table.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to make the description of the present disclosure more complete and complete, the following description is given for illustrative purposes with respect to the embodiments and examples of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.
Example 1:
referring to fig. 1-7, a joint of a carbon fiber composite material rod 1 comprises a base 4 and a force transmission tile 2, wherein the base 4 comprises a flange 4-1, a central cylinder 4-4 arranged on the flange 4-1, and three radial partition plates 4-3 symmetrically arranged on the outer wall of the central cylinder 4-4,
the composite material rod 1 is provided with three cutting grooves 1-3 which are in clearance fit with the partition plates 4-3, the three cutting grooves 1-3 are symmetrically distributed by taking the axis of the composite material rod 1 as the center at 120 degrees, and the outer surface of the rest part of the rod section 1-1 of the composite material rod 1 cut by the cutting grooves 1-3 is a rod bonding area 1-2. The cutting grooves 1-3 of the composite material rod 1 penetrate through the partition plates 4-3, so that the positioning inner walls 1-4 of the composite material rod 1 are in clearance fit with the outer walls of the central cylinders 4-4.
The force transfer tile 2 is of a thin-wall structure and is made of low-linear-expansion materials matched with the linear expansion coefficient of the carbon fiber composite material rod 1, such as low-linear-expansion invar steel, low-linear-expansion carbon fiber composite materials and the like, the force transfer tile 2 is arranged between two partition plates 4-3 and used for extruding and fixing the composite material rod 1, and the number of the force transfer tiles 2 is the same as that of the partition plates 4-3 and is three.
The force transmission tile 2 comprises a first plane section 2-1, an arc section 2-2 and a second plane section 2-3 which are sequentially connected, wherein the first plane section 2-1 and the second plane section 2-3 mutually form an included angle of 120 degrees, the first plane section 2-1 and the second plane section 2-3 are respectively connected with two adjacent partition plates 4-3, the inner concave surface of the arc section 2-2 is in clearance fit with the outer wall of the composite material rod 1, and the inner concave surface of the arc section 2-2 and the inner surfaces of the first plane section 2-1 and the second plane section 2-3 are bonding areas.
And the flange 4-1 is provided with a limiting table 4-6 for limiting the relative position between the composite material rod 1 and the base 4 along the axis. The outer wall of the central cylinder 4-4 is symmetrically provided with a plurality of radial positioning convex surfaces 4-5. And a reinforcing rib 4-2 is arranged between the flange 4-1 and the annular limiting table 4-6 for reinforcing connection, and the reinforcing rib 4-2 is positioned between the two adjacent partition plates 4-3.
When the carbon fiber composite rod joint is assembled, the composite rod 1 is in small clearance fit with the radial positioning convex surfaces 4-5 of the base 4 through the positioning inner wall, the three partition plates 4-3 are respectively inserted into the three cutting grooves 1-3, the division plates 4-3 and the cutting grooves 1-3 are not in contact clearance fit, the first plane section 2-1 and the second plane section 2-3 of each force transmission tile 2 are respectively bonded with the division plates 4-3 at the two sides through special aerospace glue, the arc section 2-2 and the rod bonding area 1-2 are bonded through special aerospace glue, the base 4 is fixed during bonding, the non-adhesive outer surfaces of the three force transmission tiles 2 are simultaneously extruded by external pressure, so that the force transmission tiles 2 extrude the adhesive layer and are close to the partition plates 4-3 and the rod adhesive areas 1-2, and the extrusion state is kept by an external tool until the adhesive layer is solidified. The limiting tables 4-6 limit the relative position of the composite material rod 1 and the base 4 along the rod axis during the curing process. After the glue layer is solidified, the first plane section 2-1 of the force transmission tile 2, the partition plate 4-3 and the second plane section 2-3 of the adjacent force transmission tile 2 are connected and positioned through the anti-drop pin 3. The base 4 is provided with threaded clearance holes and pin holes in its flange 4-1, and is connected to and positioned with external parts by means of screws and pins.
The carbon fiber composite rod joint is composed of a low-linear-expansion carbon fiber composite hollow rod, low-linear-expansion material force transmission tiles 2 and a low-linear-expansion invar material base 4, wherein the composite rod 1 and the base 4 are connected in a gluing mode through the three 120-degree uniformly-distributed force transmission tiles 2, and the overall low-linear-expansion characteristic of the joint of the composite rod 1 is achieved; because the three force transmission tiles 2 are independent, when the joint is in bonding assembly with the rod, the force transmission tiles 2 are respectively extruded to apply pressure to the glue layer of the bonding area, and the force transmission tiles 2 are of thin-wall structures, and can generate small elastic deformation when being subjected to external pressure so as to adapt to the appearance of the vertical plate of the base 4 and the rod bonding area 1-2 matched with the force transmission tiles, the requirement of the bonding matching surfaces on the processing precision can be reduced, the bonding quality of the bonding surfaces is improved, and the strength and the reliability of the joint are improved. The joint and the base 4 are connected through 120-degree distributed bonding areas, and when the joint bears the bending moment generated by each lateral force, the three bonding areas share the bending moment together, so that the joint of the rod has higher bending rigidity.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A carbon fiber composite rod joint is characterized by comprising a base and force transmission tiles, wherein the base comprises a flange, a central cylinder arranged on the flange and at least two radial partition plates symmetrically arranged on the outer wall of the central cylinder,
the composite material rod is provided with a cutting groove which is in clearance fit with the partition plate, the cutting groove penetrates through the partition plate, so that the inner wall of the composite material rod is in clearance fit with the outer wall of the central cylinder,
the force transmission tiles are arranged between the two partition plates and used for extruding and fixing the composite material rods, and the number of the force transmission tiles is the same as that of the partition plates;
the force transmission tile comprises a first plane section, an arc section and a second plane section which are sequentially connected, the first plane section and the second plane section are respectively connected with two adjacent partition plates, and the inner wall of the arc section is in clearance fit with the outer wall of the composite material rod;
the first plane section and the second plane section of the force transmission tile are bonded with the partition plate through glue,
the inner concave surface of the arc section of the force transmission tile is bonded with the outer wall of the composite material rod through glue;
the force transmission tile is of a thin-wall structure.
2. The carbon fiber composite rod joint according to claim 1, wherein the flange is provided with a limiting table for limiting the relative position of the composite rod and the base along the axis.
3. The carbon fiber composite material rod joint as recited in claim 1, wherein a plurality of radial positioning convex surfaces are symmetrically arranged on the outer wall of the central cylinder.
4. The carbon fiber composite material rod joint according to claim 1, wherein the number of the partition plates is three.
5. The carbon fiber composite material rod joint as recited in claim 2, wherein a reinforcing rib is provided between the flange and the annular limiting table for reinforcing connection.
6. The carbon fiber composite rod joint of claim 1, wherein the first planar segment of the force transfer tile, the divider plate, and the second planar segment of an adjacent force transfer tile are connected and positioned by anti-slip pins.
7. The carbon fiber composite rod joint according to claim 1, wherein the force transfer tiles are made of a low linear expansion material with linear expansion coefficient matching with that of the composite rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242197.9A CN110886747B (en) | 2019-12-06 | 2019-12-06 | Carbon fiber composite rod joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911242197.9A CN110886747B (en) | 2019-12-06 | 2019-12-06 | Carbon fiber composite rod joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110886747A CN110886747A (en) | 2020-03-17 |
| CN110886747B true CN110886747B (en) | 2021-09-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911242197.9A Active CN110886747B (en) | 2019-12-06 | 2019-12-06 | Carbon fiber composite rod joint |
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| Country | Link |
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| CN (1) | CN110886747B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063503A (en) * | 2006-04-26 | 2007-10-31 | 包尔机械有限公司 | Tube coupling for tube elements |
| DE102009059703A1 (en) * | 2009-12-18 | 2011-06-22 | Stauß, Ulrich, 78628 | Profile connector and profile composite |
| CN104832511A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院长春光学精密机械与物理研究所 | Method for controlling thickness of optical remote sensor space truss rod adhesive glue layer |
| CN107399091A (en) * | 2017-07-11 | 2017-11-28 | 北京汽车集团有限公司 | Special-shaped composite shaft, its preparation method and the connection method with metal flange |
| CN108825605A (en) * | 2018-07-24 | 2018-11-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of assembly method of carbon fibre composite truss main structure and strut |
| CN110439892A (en) * | 2019-07-26 | 2019-11-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of rod piece connector and solidification tooling |
-
2019
- 2019-12-06 CN CN201911242197.9A patent/CN110886747B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063503A (en) * | 2006-04-26 | 2007-10-31 | 包尔机械有限公司 | Tube coupling for tube elements |
| DE102009059703A1 (en) * | 2009-12-18 | 2011-06-22 | Stauß, Ulrich, 78628 | Profile connector and profile composite |
| CN104832511A (en) * | 2015-04-21 | 2015-08-12 | 中国科学院长春光学精密机械与物理研究所 | Method for controlling thickness of optical remote sensor space truss rod adhesive glue layer |
| CN107399091A (en) * | 2017-07-11 | 2017-11-28 | 北京汽车集团有限公司 | Special-shaped composite shaft, its preparation method and the connection method with metal flange |
| CN108825605A (en) * | 2018-07-24 | 2018-11-16 | 中国科学院长春光学精密机械与物理研究所 | A kind of assembly method of carbon fibre composite truss main structure and strut |
| CN110439892A (en) * | 2019-07-26 | 2019-11-12 | 中国科学院长春光学精密机械与物理研究所 | A kind of rod piece connector and solidification tooling |
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| Publication number | Publication date |
|---|---|
| CN110886747A (en) | 2020-03-17 |
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