CN102506249A - High-adaptability composite material pipe joint - Google Patents
High-adaptability composite material pipe joint Download PDFInfo
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- CN102506249A CN102506249A CN2011103292741A CN201110329274A CN102506249A CN 102506249 A CN102506249 A CN 102506249A CN 2011103292741 A CN2011103292741 A CN 2011103292741A CN 201110329274 A CN201110329274 A CN 201110329274A CN 102506249 A CN102506249 A CN 102506249A
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Abstract
The invention relates to a high-adaptability composite material pipe joint. At least one end of a composite material pipe is a conical connecting section and is of the shape of an outer cone or an inner cone. A plurality of slits are circumferentially and evenly arranged. At the same time, a metallic taper pipe and a metallic tightening taper sleeve are arranged. The three sections of the metallic taper pipe are respectively a taper part, a male thread part and a connecting section part. The bottom diameter of a male thread is slightly larger than the outer diameter of the composite material pipe; the diameter of the small end of the taper part is equal to the inner diameter of the composite material pipe; the length of the taper part is equal to the depth of the slits of the composite material pipe; the small end of the metallic tightening taper sleeve is provided with inner taper, which is consistent with the total taper of the metallic taper pipe and the composite material pipe; the diameter of the small end of the metallic tightening taper sleeve is equal to the outer diameter of the composite material pipe; and the large end of the metallic tightening taper sleeve is provided with a female thread, which is matched with the male thread of the metallic taper pipe. The high-adaptability composite material pipe joint has good universality, economy and adaptability, the process is simple and reliable, the implementation is simple and flexible, joint schemes can be designed aiming at composite material pipes which are made of different materials, have different wall thicknesses and are used under different stress conditions, and the practicability and the applicability are high.
Description
Technical field
The present invention relates to a kind of composite pipe joint of high-adaptability, is a kind of design proposal of composite material tube class A of geometric unitA joint.Be suitable for and be particularly useful for adopting the complex space truss structure of heavy wall composite material tube member designs.The invention still further relates to the composite pipe joint design scheme and the connecting means of this high-adaptability.
Background technique
Composite material pipe (like carbon fiber pipe, fiberglass pipe etc.) is commercially produced in enormous quantities, but the composite material tube material is not suitable for machining, is difficult to realize the desired joint of labyrinth.Material and moulding process branch are pressed in the design of composite material tube class A of geometric unitA joint at present, mainly contain four types usually: the one, and short fibre moulding joint promptly forms joint simultaneously when the composite material tube molding component.This method can moulding complicated joint form, but the concentrated load of transmitting is little; The 2nd, long fibre twines joint, is about to long fibre and is wrapped on the connecting bolt lining, and formation can be born the joint of very big tension load; The 3rd, the veneer joint is promptly strengthened machining drilling behind the solidifying, cambial wall plywood joint at the local shop layer that adopts of veneer connection part.Joint and laminated plate structure combine together, can bear bigger stretching, compression and shearing load; The 4th, preform constructions spare joint, this joint and structure combine together and design global formation jointly.In addition, adopting 3 D weaving or thickness direction enhancing structural composite material technology to come designed joint structural type is emerging research direction.
Composite pipe joint common metal material is aluminum alloy, titanium alloy, low thermal coefficient of expansion alloy, like invar.The basic principle of composite joint structural type design is that bearing capacity height, technology are simple, reliable.Above-mentioned composite pipe joint design exists complex process, manufacturing difficulty, and flexibility is not enough, particularly can not adapt to joint form occasion complicated and changeable.
Summary of the invention
In order to overcome the above-mentioned shortcoming of composite pipe joint, the present invention provides a kind of design proposal of composite pipe joint of high-adaptability, and the connecting means of the composite pipe joint of this high-adaptability.The present invention is based on general, the flexible and adaptable composite pipe joint design proposal of metal connecting piece.
The technological scheme that the present invention adopted is: a kind of composite pipe joint of high-adaptability; It is characterized in that; At least one end of this composite pipe is taper connection section (being also referred to as " connecting end ", " tapering part " perhaps " an apertured end "), and this taper connection section is outer taper or interior taper; On this taper connection section,, parallel between each seam along circumferentially being provided with some seams equably; Simultaneously, be provided with the metal Taper Pipe and the metal that are used with this composite pipe and tighten up tapered sleeve (claiming that also metal tightens up Taper Pipe); Described metal Taper Pipe divides three sections: first section is the tapering part, and the stage casing is a male thread portion, and the 3rd section is the linkage section part; The external diameter that directly is a bit larger tham composite material tube at the bottom of the outside thread of said metal Taper Pipe stage casing part; The diameter of said tapering part small end equals the internal diameter of composite material tube; The length of said tapering part equals the degree of depth of seam of the mouth of pipe processing of composite material tube; Described metal tightens up tapered sleeve and divides two sections: one section of small end is provided with inner taper, and its inner taper is consistent with " said metal Taper Pipe tapering part and the later tapering that forms of the tapering addition of composite pipe taper connection section "; Metal tightens up the external diameter that the tapered sleeve end diameter equals said composite material tube; One section of big end that said metal tightens up tapered sleeve is provided with internal thread, and this internal thread matches with the outside thread in said metal Taper Pipe stage casing.
The linkage section of said metal Taper Pipe partly is used for being connected of this metal Taper Pipe and other parts or parts, and the structure of linkage section is set according to connection request: can adopt forms such as screw thread, bayonet socket or flange plate.
In other words, scheme of the present invention is: at first, and to pipe joint; Referring to Fig. 1; At the two ends of composite material tube (such as carbon fiber pipe, fiberglass pipe etc.), on the connecting end tube wall of desiring designed joint, adopt the mode of machining in advance; The composite material tube connecting end is lathed thin conical pipe, and along circumferentially processing some seams of appropriate depth in uniform way.As shown in Figure 2, can adopt the outer wall or the inwall dual mode of turning composite material.Like this, as shown in Figure 3, just can the composite material enlargement of pipe of the part of cracking perhaps be shrunk to a cone, and the mode of the employing of car outer wall contraction, pipe end will form outer taper; And the mode of the employing of car inwall expansion, pipe end will form interior taper.
Then, process a Taper Pipe joint with metallic material, referring to Fig. 4, Fig. 5 and Fig. 6; This metal Taper Pipe divides three sections: first section is the Taper Pipe of little gradient; The stage casing is an outside thread, and the 3rd section can be any structure form that is processed into by the requirement of the composite structure that will build, in Fig. 4; Example be ball node, Taper Pipe one end links through screw thread and ball node.
Shown in Fig. 5 and Fig. 3 b, for the composite material tube of turning inwall, the Outside diameter of used metal Taper Pipe equals the composite material bore; The tapering partial-length of Taper Pipe equals the degree of depth of seam of the mouth of pipe processing of composite material tube.When assembling, the Taper Pipe small end is inserted composite material tube, the mouth of pipe is opened, form outer taper.As shown in Figure 4, other is provided with the metal that an inwall has tapering and tightens up tapered sleeve, and the tapering of its tapering and aforementioned metal Taper Pipe difference mutually is the turning tapering of tube wall, and its end diameter equals the external diameter of composite material tube, and length is also short slightly; And car in the termination that this metal tightens up tapered sleeve the internal thread that matches with above-mentioned metal Taper Pipe stage casing outside thread is arranged.
Shown in Fig. 6 and Fig. 3 a, for the composite material tube of turning outer wall, the Outside diameter of used metal Taper Pipe equals the composite material bore; The tapering partial-length of Taper Pipe equals the degree of depth of seam of the mouth of pipe processing of composite material tube.Referring to shown in Figure 4, other is provided with the metal that an inwall has tapering and tightens up tapered sleeve, and the tapering of its tapering and aforementioned metal Taper Pipe difference mutually is the turning tapering of tube wall, and its Outside diameter equals the external diameter of composite material tube, and length is also short slightly; And car in the termination that this metal tightens up tapered sleeve the internal thread that matches with above-mentioned metal Taper Pipe stage casing outside thread is arranged.When assembling, when composite material tube is inserted metal and tightens up tapered sleeve, the mouth of pipe is shunk, form the outer cone dress.
That is, when composite material connecting tube connecting end turning inwall, adopt connectivity scenario design as shown in Figure 5.When metal connecting piece leading portion cone was pressed into the composite material tube connecting end, the composite material connecting end was expanded into interior taper; When composite material tube connecting end facing outer wall, adopt connectivity scenario design as shown in Figure 6.During connection, the composite material tube connecting end is pressed into the metal that is connected in advance on the metal Taper Pipe earlier tightens up in the tapered sleeve, then the composite material tube connecting end will be shrunk to outer taper.After the composite material tube end face touches metal Taper Pipe stage casing end face, again metal is tightened up tapered sleeve and further screw and get final product.
Situation with to an end turning inwall of composite material tube is an example; Be about to adopt mouth of pipe expansion to form interior taper Placement; Implementation step of the present invention is following: referring to Fig. 1 to Fig. 5; At first, promptly make tube wall locate attenuation, and process the slit of suitable width in uniform way in the end at inner conical surface of an end turning of composite material tube; In the middle of the inside and outside tube wall at composite pipe joint place and the seam that cuts, and tighten up on the conical surface of tapered sleeve, evenly coat suitable adhesive (like epoxy resin, zero thermal expansion adhesive etc.) at metal tapered sleeve and metal; Then composite material tube is passed the metal with inner taper and tighten up tapered sleeve, again the metal Taper Pipe is inserted composite material tube, utilize the tapering of metal Taper Pipe to expand the mouth of pipe of composite material tube, up to mouth of pipe end face and the applying of side, metal Taper Pipe stage casing; The internal thread that then metal is tightened up tapered sleeve cooperates, tightens with the outside thread in metal Taper Pipe stage casing.Like this, after metal tightens up tapered sleeve and tightens, adhesive will fill up all slits in the joint, comprise the open slit of the composite material tube mouth of pipe, treat adhesive solidification after, this composite pipe joint is promptly accomplished enforcement.
Referring to Fig. 6, for composite pipe end car outer wall, be about to adopt the mouth of pipe to shrink the mode that forms the outer cone straight coupling, step is slightly different with the connecting treatment mode of outer taper composite material tube.After we handled composite material tube well and connect end face (crack, gluing), we at first will tighten up tapered sleeve with metal and be connected on the metal connecting piece, but not exclusively tighten up.Then composite material tube is pressed into the metal that is connected in advance on the metal Taper Pipe and tightens up in the tapered sleeve, then the composite material tube connecting end will be shrunk to outer taper.After the composite material tube end face touches metal Taper Pipe stage casing end face, again metal is tightened up tapered sleeve and further screw and get final product.After treating adhesive solidification, this composite pipe joint is promptly accomplished enforcement.
Optimized project, the processing Connection Step that we can versatility is following: all be to handle composite material tube connecting end (cracking and gluing) earlier before each the connection; Then metal is tightened up tapered sleeve and be connected on the metal connecting piece through matching thread in advance, but do not screw; Afterwards composite material tube is pressed into metal and tightens up in the tapered sleeve, the tapering part that metal tightens up tapered sleeve inner taper or metal connecting piece will guarantee that the composite pipe connecting end expanded or bring together the shape of needs; Tighten up metal at last and tighten up tapered sleeve, wait for adhesive solidification, promptly accomplish the connection of composite pipe joint.
The tapering part that said metal Taper Pipe is first section can adopt " little gradient ".Said " little gradient " is meant: like the tapering of 1:10, bear extraneous Separating force requirement when stronger when the joint structure, we can suitably adopt bigger gradient, otherwise can adopt smaller tapering.
The scheme of accomplishing the 2nd invention of the application task is: a kind of composite pipe joint of above-mentioned high-adaptability and the connecting means of other part/parts: it is characterized in that step is following:
⑴. adopt the mode of machining at least one end of composite material tube, the composite material tube connecting end is lathed thin conical pipe, forms the perhaps interior taper of outer taper;
⑵. the taper connection section at composite material tube processes some slits;
⑶. according to the shape of composite material tube taper connection section, select step ⑶-a or step ⑶-b respectively:
When composite material tube taper connection section adopts outer taper, employing ⑶-a: the metal with inner taper is passed in the end of composite material tube taper connection section tighten up tapered sleeve;
, composite material tube taper connection section during taper, adopts ⑶-b: metal is tightened up tapered sleeve be connected in advance on the metal connecting piece, still not exclusively tighten up in adopting through matching thread;
⑷. at the inside and outside tube wall at composite pipe joint place and the middle zero thermal expansion adhesive that all is coated with of seam that cuts;
⑸. metal Taper Pipe tapering is partly inserted the apertured end of composite material tube, utilize the tapering of metal Taper Pipe to open the mouth of pipe of composite material tube, fit up to mouth of pipe end face and side, metal Taper Pipe stage casing;
⑹. according to the shape of composite material tube connecting end, select step ⑹-a or step ⑹-b respectively:
When the composite material tube connecting end adopted outer taper, employing ⑹-a: the internal thread that metal is tightened up tapered sleeve cooperated, tightens with the outside thread in metal Taper Pipe stage casing;
In the composite material tube connecting end adopts during taper, employing ⑹-b: metal is tightened up tapered sleeve tighten;
⑺. wait for described adhesive solidification.
In the optimized project, between said step ⑵ and the step ⑶, can increase ⑵-A in steps: with an end and the part of preparing to be connected/parts fixed connection of the nothing of metal Taper Pipe awl.
Above scheme optimization is designed with:
1, described composite pipe is applicable to the composite material tube of various materials and thickness;
2, described zero thermal expansion adhesive adopts unsaturated polyester resin;
3, described metal Taper Pipe and metal tighten up tapered sleeve and adopt the invar manufacturing; Described invar is the structural steel with zero thermal expansion characteristics and excellent performance.
4, described metal tightens up the key that tapered sleeve one end inner cone one end internal thread is connection composite material tube and metal Taper Pipe.
The invention has the beneficial effects as follows:
A kind of joint design scheme of composite material tube that can extensive use is provided,, has had good versatility, Economy, adaptability, simple and reliable process, implemented simple and flexible for the composite material tube of unlike material different wall.Be applicable between the various composite material tubes to connect, also be applicable to being connected of metal tube and composite material tube, be specially adapted to the construction of complex composite material space structure such as truss.
Optimized project has more embodied: with the integrated joint that the carbon fiber pipe performance is complementary, the application of this invention can be made the baroque telescope sub-truss that can be applicable under the various extreme weather conditions with carbon fiber pipe.Little at proportion, all kept the advantageous characteristic of carbon fiber pipe on the mechanical property such as intensity is high, and cold and hot expansion is insensitive.
Description of drawings
Fig. 1 composite pipe (connecting end processing is lathed taper and is processed with some seams);
Fig. 2 turning composite material pipe end becomes taper (a: car outer wall, b: the car inwall);
Fig. 3 composite pipe connecting end is through expansion or shrink the taper connecting head that forms;
Fig. 4 is applicable to that the metal Taper Pipe joint of turning pipe fitting inner wall tightens up tapered sleeve (signal has been connected ball-type joint node) with metal;
Fig. 5 is applicable to the metal Taper Pipe of pipe fitting car inwall and the joint design scheme that metal tightens up tapered sleeve;
Fig. 6 is applicable to the metal Taper Pipe of pipe fitting car outer wall wall and the joint design scheme that metal tightens up tapered sleeve;
Fig. 7 is the embodiment figure of the composite pipe joint of turning inwall of the present invention.
Fig. 8 is the embodiment figure of the composite pipe joint of turning outer wall of the present invention.
Embodiment
Among the figure: 1. the ball-type joint node of signal, 2. metal connecting piece, 3. metal tightens up tapered sleeve, 4. composite pipe.
In the embodiment shown in fig. 7, with end turning inwall, and the composite material tube 4 that processes seam and metal Taper Pipe 2 and metal tighten up tapered sleeve 3 and be connected matching part and all coat suitable adhesive, then composite material tube 4 is inserted in metal and tightens up in the Taper Pipe 3; All be coated with suitable adhesive at the inside and outside tube wall of composite material tube 4 joints and the seam centre of cutting; Composite material tube 4 is inserted in the tapering of metal Taper Pipe 2, utilize the tapering of metal connecting piece to open the mouth of pipe of composite material tube, be butted on the side in metal Taper Pipe 2 stage casings up to mouth of pipe end face; Again the adhesive in composite material tube 4 and the seam thereof is smoothened; The internal thread that then metal is tightened up tapered sleeve 3 cooperates, tightens with the outside thread in metal Taper Pipe stage casing, treats that adhesive solidification gets final product.
In the embodiment shown in fig. 8; Behind full-filling adhesive in the middle of composite material tube 4 joint inside and outside walls and the seam that cuts; Metal connecting piece 2 awls and metal are tightened up tapered sleeve (metal tightens up canalis spinalis) 3 to link together through matching thread and (but not exclusively tightens up; Leave a small amount of space earlier) back inserts composite material tube 4, utilizes metal to tighten up the mouth of pipe of the tapering compressed composite material pipe of tapered sleeve, is butted on the side in metal connecting piece 2 stage casings up to mouth of pipe end face; Then metal is tightened up tightening of tapered sleeve 3, treat that adhesive solidification gets final product.
Claims (8)
1. the composite pipe joint of a high-adaptability is characterized in that, at least one end of this composite pipe is the taper connection section, outer taper of this taper connection Duan Guanwei or interior taper; On this taper connection section pipe,, parallel between each seam along circumferentially being provided with some seams equably; Simultaneously, be provided with the metal Taper Pipe and the metal that are used with this composite pipe and tighten up tapered sleeve; Described metal Taper Pipe divides three sections: first section is the tapering part, and the stage casing is a male thread portion, and the 3rd section is the linkage section part; The external diameter that directly is a bit larger tham composite material tube at the bottom of the outside thread of said metal Taper Pipe stage casing part; The diameter of said tapering part small end equals the internal diameter of composite material tube; The length of said tapering part equals the degree of depth of seam of the mouth of pipe processing of composite material tube; Described metal tightens up tapered sleeve and divides two sections: one section of small end is provided with inner taper, and its inner taper is consistent with " said metal Taper Pipe tapering part and the later tapering that forms of the tapering addition of composite pipe taper connection section "; Metal tightens up the external diameter that the tapered sleeve end diameter equals said composite material tube; One section of big end that said metal tightens up tapered sleeve is provided with internal thread, and this internal thread matches with the outside thread in said metal Taper Pipe stage casing.
2. the composite pipe joint of high-adaptability according to claim 1 is characterized in that, the structure of said metal Taper Pipe linkage section adopts screw thread, bayonet socket or flange plate.
3. the composite pipe joint of high-adaptability according to claim 1 is characterized in that, the tapering that said metal Taper Pipe is first section partly adopts " little gradient ", and said " little gradient " is meant: like the tapering of 1:10; Bear extraneous Separating force requirement when stronger when the joint structure, adopt bigger gradient, otherwise adopt smaller tapering.
4. the composite pipe joint of high-adaptability according to claim 1 is characterized in that, described composite pipe is applicable to the composite material tube of various materials and wall thickness.
5. according to the composite pipe joint of the described high-adaptability of one of claim 1 ~ 4, it is characterized in that metal Taper Pipe and metal tighten up tapered sleeve and adopt the invar manufacturing; Described invar is the structural steel with zero thermal expansion characteristics and excellent performance.
6. the composite pipe joint of the described high-adaptability of claim and the connecting means of other part/parts: it is characterized in that step is following:
⑴. adopt the mode of machining at least one end of composite material tube, the composite material tube connecting end is lathed thin conical pipe, forms the perhaps interior taper of outer taper;
⑵. the taper connection section at composite material tube processes some slits;
⑶. according to the shape of composite material tube taper connection section, select step ⑶-a or step ⑶-b respectively:
When composite material tube taper connection section adopts outer taper, employing ⑶-a: the metal with inner taper is passed in the end of composite material tube taper connection section tighten up tapered sleeve;
, composite material tube taper connection section during taper, adopts ⑶-b: metal is tightened up tapered sleeve be connected in advance on the metal connecting piece, still not exclusively tighten up in adopting through matching thread;
⑷. at the inside and outside tube wall at composite pipe joint place and the middle zero thermal expansion adhesive that all is coated with of seam that cuts;
⑸. metal Taper Pipe tapering is partly inserted the apertured end of composite material tube, utilize the tapering of metal Taper Pipe to open the mouth of pipe of composite material tube, fit up to mouth of pipe end face and side, metal Taper Pipe stage casing;
⑹. according to the shape of composite material tube connecting end, select step ⑹-a or step ⑹-b respectively:
When the composite material tube connecting end adopted outer taper, employing ⑹-a: the internal thread that metal is tightened up tapered sleeve cooperated, tightens with the outside thread in metal Taper Pipe stage casing;
In the composite material tube connecting end adopts during taper, employing ⑹-b: metal is tightened up tapered sleeve tighten;
⑺. wait for described adhesive solidification.
7. the composite pipe joint of high-adaptability according to claim 6 and the connecting means of other part/parts; It is characterized in that; Between said step ⑵ and the step ⑶, increase ⑵-A in steps: with an end and the part of preparing to be connected/parts fixed connection of the nothing of metal Taper Pipe awl.
8. according to the composite pipe joint of claim 6 or 7 described high-adaptabilities and the connecting means of other part/parts, it is characterized in that described zero thermal expansion adhesive adopts unsaturated polyester resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103292741A CN102506249A (en) | 2011-10-26 | 2011-10-26 | High-adaptability composite material pipe joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103292741A CN102506249A (en) | 2011-10-26 | 2011-10-26 | High-adaptability composite material pipe joint |
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| CN102506249A true CN102506249A (en) | 2012-06-20 |
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| CN2011103292741A Pending CN102506249A (en) | 2011-10-26 | 2011-10-26 | High-adaptability composite material pipe joint |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444652A (en) * | 2011-10-26 | 2012-05-09 | 中国科学院国家天文台南京天文光学技术研究所 | Composite material pipe fitting joint |
| CN104088649A (en) * | 2014-06-27 | 2014-10-08 | 上海隧道工程股份有限公司 | Reducer union for composite material stacking lining component connection |
| CN106820784A (en) * | 2017-03-27 | 2017-06-13 | 王金 | Separate assembling children walk protects vehicle carriage |
| CN107512401A (en) * | 2017-07-21 | 2017-12-26 | 中国航空工业集团公司基础技术研究院 | A kind of preparation method of composite driver |
| CN108044569A (en) * | 2017-12-06 | 2018-05-18 | 普瑞特机械制造股份有限公司 | A kind of compound shovel of sealed sunitary |
| CN113202849A (en) * | 2021-05-08 | 2021-08-03 | 哈尔滨工业大学（威海） | Carbon fiber pipe and metal joint glue connection process and metal joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102444652A (en) * | 2011-10-26 | 2012-05-09 | 中国科学院国家天文台南京天文光学技术研究所 | Composite material pipe fitting joint |
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| CN104088649A (en) * | 2014-06-27 | 2014-10-08 | 上海隧道工程股份有限公司 | Reducer union for composite material stacking lining component connection |
| CN106820784A (en) * | 2017-03-27 | 2017-06-13 | 王金 | Separate assembling children walk protects vehicle carriage |
| CN107512401A (en) * | 2017-07-21 | 2017-12-26 | 中国航空工业集团公司基础技术研究院 | A kind of preparation method of composite driver |
| CN108044569A (en) * | 2017-12-06 | 2018-05-18 | 普瑞特机械制造股份有限公司 | A kind of compound shovel of sealed sunitary |
| CN113202849A (en) * | 2021-05-08 | 2021-08-03 | 哈尔滨工业大学（威海） | Carbon fiber pipe and metal joint glue connection process and metal joint |
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Application publication date: 20120620 |