CN211059581U - Connecting structure of pultrusion reinforced FRP (fiber reinforced plastic) pipe - Google Patents
Connecting structure of pultrusion reinforced FRP (fiber reinforced plastic) pipe Download PDFInfo
- Publication number
- CN211059581U CN211059581U CN201921985370.XU CN201921985370U CN211059581U CN 211059581 U CN211059581 U CN 211059581U CN 201921985370 U CN201921985370 U CN 201921985370U CN 211059581 U CN211059581 U CN 211059581U
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- Prior art keywords
- flange
- frp pipe
- cylindrical
- frp
- reinforcement
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- 229920002430 Fibre-reinforced plastic Polymers 0.000 title description 70
- 239000011151 fibre-reinforced plastic Substances 0.000 title description 70
- 230000002787 reinforcement Effects 0.000 claims abstract description 37
- 210000003205 muscle Anatomy 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000004323 axial length Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 208000016261 weight loss Diseases 0.000 claims 1
- 239000013585 weight reducing agent Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 5
- 230000006872 improvement Effects 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Moulding By Coating Moulds (AREA)
Abstract
The utility model discloses a connecting structure of a pultrusion reinforced FRP pipe, which belongs to the technical field of composite material connection, and comprises an FRP pipe and a flange plate, wherein the inner wall of the FRP pipe is provided with at least two reinforcements, each reinforcement comprises a cylindrical reinforcement part and a supporting part, and at least one end of the cylindrical reinforcement part is provided with a connecting section extending out of the supporting part; the flange plate comprises a cylindrical part, a flange part and a connecting part, and a first through hole is formed in the connecting part; the ring flange the connecting portion with the muscle the terminal surface of supporting part offsets and leans on, every the cylinder adds muscle portion the linkage segment all passes correspondingly first through-hole, wearing out of linkage segment is served and all is provided with the retaining member. The utility model discloses simple structure connects reliably, has improved the bearing capacity of FRP pipe moreover.
Description
Technical Field
The utility model belongs to the technical field of the combined material is connected, especially, relate to a connection structure of pultrusion reinforced FRP pipe.
Background
Fiber Reinforced composite (FRP) is a composite formed by winding, molding or pultrusion a reinforcing Fiber material, such as glass Fiber, carbon Fiber, aramid Fiber, etc., with a matrix material. The composite material is gradually widely applied in the engineering field due to the advantages of light weight, high strength, corrosion resistance and the like.
At present, the FRP pipe is connected by bonding a metal joint at two ends of a pipe body and then connecting the metal joint with other FRP pipes or parts. However, the adhesive force between the FRP pipe and the metal joint is in direct proportion to the adhesive length within a certain range, and after the adhesive force exceeds the critical length, the adhesive force is not increased along with the increase of the adhesive length, so that the bearing capacity of the FRP pipe is limited, and the adhesive joint has obvious aging problems.
Therefore, in the composite material connection technology field, there is still a need for research and improvement on the connection structure of FRP pipes, which is also a research focus and emphasis in the composite material connection technology field at present, and more the starting point of the present invention is completed.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model discloses the technical problem that solve is: the connecting structure of the pultrusion reinforced FRP pipe is simple in structure and reliable in connection, and bearing capacity of the FRP pipe can be improved.
In order to solve the technical problem, the technical scheme of the utility model is that: a connecting structure of a pultrusion reinforced FRP pipe comprises an FRP pipe and a flange plate, wherein at least two reinforcements are arranged on the inner wall of the FRP pipe, each reinforcement comprises a cylindrical reinforcement part and a supporting part arranged between the inner wall of the FRP pipe and the cylindrical reinforcement part, the axial length of the cylindrical reinforcement part is greater than that of the supporting part, and at least one end of the cylindrical reinforcement part is provided with a connecting section extending out of the supporting part;
the flange plate comprises a cylindrical part matched with an inner hole at the end part of the FRP pipe, a flange part which is positioned at one end of the cylindrical part and protrudes outwards, and a connecting part positioned in the other end of the cylindrical part, wherein a first through hole corresponding to the cylindrical reinforcement part is arranged on the connecting part;
the ring flange the connecting portion with the muscle the terminal surface of supporting part offsets and leans on, every the cylinder adds muscle portion the linkage segment all passes correspondingly first through-hole, wearing out of linkage segment is served and all is provided with the retaining member.
As an improvement, the flange further includes an annular portion located outside the cylindrical portion and disposed concentrically with the cylindrical portion, the annular portion being fitted to an outer periphery of the end portion of the FRP pipe.
As an improvement, the retaining member includes anchor ring and two piece at least clamping pieces, the anchor ring has the toper hole, the surface of clamping piece with anchor ring hole shape looks adaptation, all the clamping piece encloses to close and forms be used for with the connecting segment complex inner chamber of cylinder reinforcement portion.
As an improvement, the reinforced rib and the FRP pipe are integrally formed through a pultrusion process.
As an improvement, a plurality of second through holes are formed in the flange part of the flange plate.
As an improvement, the flange plate is a metal flange.
As an improvement, both ends of the cylindrical reinforcing part are provided with the connecting sections extending out of the supporting parts; the flange plates are arranged at two ends of the FRP pipe.
As an improvement, the middle part of the connecting part is provided with a lightening hole.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
the utility model provides a connecting structure of pultrusion reinforced FRP pipe, because at the inside design of FRP pipe add the muscle to flange dish and retaining member have been designed, therefore when using, at the tip assembly ring flange of FRP pipe, make the drum portion of ring flange cooperate with the tip hole of FRP pipe, the connecting portion of ring flange with the terminal surface of the supporting part of muscle leans on, and make every cylinder add the connecting section of muscle portion all pass corresponding first through-hole, then wear out of the connecting section and serve and set up the retaining member, thereby make FRP pipe and flange dish link together, when connecting two FRP pipes like this, connect the ring flange at the tip of every FRP pipe first, then link together two ring flanges, can realize the connection of FRP pipe; the effect of ring flange bears the pressure-bearing behind two FRP union couplings, and the retaining member is fixed the muscle of FRP pipe on the ring flange, just so can bear the pulling force. Compared with the cementing in the prior art, the quantity of the reinforced rib and the locking piece can be calculated through mechanics as required, so that the bearing capacity of the FRP pipe is improved. The utility model provides a connection structure of FRP pipe can not destroy the FRP pipe, simple structure, connects reliably, has improved the bearing capacity of FRP pipe moreover.
Because the flange plate also comprises the annular part positioned outside the cylindrical part, and the annular part is matched with the periphery of the end part of the FRP pipe, the annular part and the cylindrical part can form an annular groove, so that the end part of the FRP pipe is positioned in the annular groove, and the function of protecting the FRP pipe is achieved.
Because the retaining member includes anchor ring and two piece at least clamping pieces, the anchor ring has the toper hole, the surface of clamping piece with anchor ring hole shape looks adaptation, all the clamping piece encloses to close and forms be used for with the linkage segment complex inner chamber of cylinder stiffened portion, can put the anchor ring on the end of wearing out of linkage segment earlier like this, then packs in all clamping pieces between the end of wearing out of anchor ring and linkage segment, along with the wedging of clamping piece, the end of wearing out of linkage segment is held tightly to the inner chamber of clamping piece, realizes the reinforcement anchor with the FRP pipe on the ring flange, easy operation, the anchor is reliable.
Because the flange part of the flange plate is provided with the plurality of second through holes, the flange plate can be connected through fasteners such as bolts, nuts and the like.
Because the weight-reducing hole is arranged in the middle of the connecting part, the weight of the flange plate can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the range which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a schematic structural diagram of a connection structure of a pultrusion reinforced FRP pipe provided by an embodiment of the present invention;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is an enlarged sectional view taken along line A-A of FIG. 1;
the exploded view of fig. 1 of fig. 4;
FIG. 5a is a schematic structural view of a pultruded reinforced FRP pipe;
FIG. 5B is a cross-sectional view B-B of FIG. 5 a;
FIG. 5c is a perspective view of FIG. 5 a;
FIG. 6a is a schematic view of the flange configuration;
FIG. 6b is a cross-sectional view C-C of FIG. 6 a;
FIG. 6c is a perspective view of FIG. 6 a;
FIG. 6d is a perspective view of FIG. 6a from another perspective;
FIG. 7a is a schematic structural view of an anchor ring;
FIG. 7b is a cross-sectional view D-D of FIG. 7 a;
FIG. 8 is a perspective view of the clip;
FIG. 9 is a schematic structural view showing a state where two pultruded reinforced FRP pipes are connected;
in the figure: 1-FRP pipe, 11-reinforcement, 111-cylindrical reinforcement part, 1111-connecting section, 112-supporting part, 2-flange plate, 21-cylindrical part, 22-flange part, 221-second through hole, 23-connecting part, 231-first through hole, 232-lightening hole, 24-annular part, 3-locking part, 31-anchor ring, 32-clamping piece, 4-bolt and 5-nut.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present specification, the terms "front", "rear", "left", "right", "inner", "outer" and "middle" are used for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes.
As shown in fig. 1 to 4, a connecting structure of a pultrusion reinforced FRP pipe includes an FRP pipe 1 and a flange 2, where the flange 2 is a metal flange, for example, an aluminum alloy flange, and the aluminum alloy has a light weight, and the flange 2 may also be made of other materials.
As shown in fig. 5 a-5 c, three ribs 11 are provided on the inner wall of the FRP pipe 1, and the ribs 11 and the FRP pipe 1 are integrally formed by pultrusion, so that the production efficiency is high. It should be noted that the number of the reinforcement ribs 11 can be selected by a person skilled in the art through mechanical calculation according to actual needs, and may be two, four, five, and so on. Every muscle 11 all includes cylinder rib portion 111 and locates the supporting part 112 between 1 inner wall of FRP pipe and the cylinder rib portion 111, the axial length of cylinder rib portion 111 is greater than the axial length of supporting part 112, and the one end of cylinder rib portion 111 has the linkage segment 1111 that stretches out supporting part 112, of course, also can be according to the connection needs, all set up the linkage segment that stretches out supporting part 112 at the both ends of cylinder rib portion 111, FRP pipe 1's both ends can all set up ring flange 2 this moment. In the present embodiment, the supporting portion 112 has a plate-like structure.
As shown in fig. 3 and fig. 6a to 6d, the flange 2 includes a cylindrical portion 21 matching with the inner hole at the end of the FRP pipe 1, a flange portion 22 located at one end of the cylindrical portion 21 and protruding outward, and a connecting portion 23 located at the other end of the cylindrical portion 21, the flange portion 22 is a circular ring structure, and naturally, as an alternative, the flange portion 22 may also be selected to be other structures such as a square structure, which is not described herein again; the connecting part 23 is provided with a first through hole 231 corresponding to the cylindrical reinforcing part 111; the flange 2 further includes an annular portion 24 located outside the cylindrical portion 21 and concentrically arranged with the cylindrical portion 21, the annular portion 24 fitting to an outer periphery of the end portion of the FRP pipe 1, so that the annular portion 24 and the cylindrical portion 21 form an annular groove, so that the end portion of the FRP pipe 1 is located in the annular groove, thereby functioning to protect the FRP pipe 1. Preferably, in order to further protect the end of the FRP pipe 1, a rubber pad (not shown) may be further provided on the inner wall of the annular groove. In order to reduce the weight of the flange 2, the connecting portion 23 is provided with a lightening hole 232 at the middle thereof. Of course, the connecting portion 23 may not be provided with the lightening hole 232.
As shown in fig. 3, the connecting portion 23 of the flange 2 abuts against the end face of the supporting portion 112 of the reinforcement 11, the connecting section 1111 of each cylindrical reinforcement portion 111 passes through the corresponding first through hole, and the penetrating end of the connecting section 1111 is provided with a locking member 3.
In the present embodiment, as shown in fig. 3, 4, 7a, 7b and 8, the locking member 3 includes an anchor ring 31 and three clips 32, the number of the clips 32 can be selected by those skilled in the art according to actual situations, and can be two, four, five, etc.; anchor ring 31 has a tapered inner bore, and the outer surface of clip 32 matches the shape of the inner bore of anchor ring 31, and all clip 32 enclose to form an inner cavity for cooperating with connecting section 1111 of cylindrical reinforcement portion 111. Of course, as an alternative, a screw thread may be provided on the connection section 1111 of the cylindrical rib portion 111, and the nut is used as the locking member at this time, which will not be described herein.
When in use, the flange plate 2 is assembled at the end part of the FRP pipe 1, the cylinder part 21 of the flange plate 2 is matched with the inner hole at the end part of the FRP pipe 1, the annular part 24 is matched with the periphery of the end part of the FRP pipe 1, the connecting part 23 of the flange plate 2 is abutted against the end surface of the supporting part 112 of the reinforcement 11, the connecting section 1111 of each cylindrical reinforcement part 111 passes through the corresponding first through hole 231, then the penetrating end of the connecting section 1111 is sleeved with the anchor ring 31, then all the clamping pieces 32 are plugged between the anchor ring 31 and the penetrating end of the connecting section 1111, along with the wedging of the clamping pieces 32, the inner cavity of the clamping piece 32 tightly holds the penetrating end of the connecting section 1111, the reinforcement 11 of the FRP pipe 1 is anchored on the flange plate 2, the operation is simple, the anchoring is reliable, so that the FRP pipe 1 and the flange plate 2 are connected together, when two FRP pipes 2 are connected, as shown in fig. 9, the end part, then connecting the two corresponding flange plates together, thus realizing the connection of the FRP pipe; the flange plate 2 is used for bearing the pressure of the two FRP pipes 1 after being connected, and the locking piece 3 fixes the reinforcement 11 of the FRP pipes 1 on the flange plate 2, so that the tension can be borne. Compared with the cementing in the prior art, the number of the reinforced ribs 11 and the locking pieces 3 can be calculated through mechanics according to needs, so that the bearing capacity of the FRP pipe 1 is improved.
In order to realize the connection between the flange plates, as shown in fig. 6c, six second through holes 221 are formed in the flange portion 22 of the flange plate 2, it should be noted that the number of the second through holes 221 is not limited to six, and those skilled in the art can select the second through holes according to actual needs, and details are not described herein; as shown in fig. 9, the flanges may be connected by fasteners such as bolts 4 and nuts 5. Of course, as an alternative, the second through hole may not be provided, and the flange plate may be connected to the flange plate by welding or the like.
The embodiment of the utility model provides a still disclose a connection method of pultrusion reinforced FRP pipe, adopt the connection structure of above-mentioned pultrusion reinforced FRP pipe, include following step:
the FRP pipe 1 and the reinforcement 11 are integrally formed through a pultrusion process, then one end of the reinforcement 11 positioned on the supporting part 112 is cut off, so that one end of the cylindrical reinforcement part 111 is provided with a connecting section 1111 extending out of the supporting part 112, and of course, both ends of the reinforcement 11 positioned on the supporting part 112 can be cut off; and (3) assembling the flange plate 2, enabling the cylindrical part 21 of the flange plate 2 to be matched with the inner hole at the end part of the FRP pipe 1, enabling the connecting part 23 of the flange plate 2 to be abutted against the end surface of the supporting part 112 of the reinforcement 11, enabling the connecting section 1111 of each cylindrical reinforcement part 111 to penetrate through the corresponding first through hole 231, and then arranging a locking piece 3 at the penetrating end of the connecting section 1111.
To sum up, the embodiment of the utility model provides a connection structure of FRP pipe can not destroy the FRP pipe, simple structure connects reliably, has improved the bearing capacity of FRP pipe moreover.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (8)
1. A connecting structure of a pultrusion reinforced FRP pipe comprises an FRP pipe and a flange plate, and is characterized in that at least two reinforcements are arranged on the inner wall of the FRP pipe, each reinforcement comprises a cylindrical reinforcement part and a supporting part arranged between the inner wall of the FRP pipe and the cylindrical reinforcement part, the axial length of the cylindrical reinforcement part is greater than that of the supporting part, and at least one end of the cylindrical reinforcement part is provided with a connecting section extending out of the supporting part;
the flange plate comprises a cylindrical part matched with an inner hole at the end part of the FRP pipe, a flange part which is positioned at one end of the cylindrical part and protrudes outwards, and a connecting part positioned in the other end of the cylindrical part, wherein a first through hole corresponding to the cylindrical reinforcement part is arranged on the connecting part;
the ring flange the connecting portion with the muscle the terminal surface of supporting part offsets and leans on, every the cylinder adds muscle portion the linkage segment all passes correspondingly first through-hole, wearing out of linkage segment is served and all is provided with the retaining member.
2. The structure for connecting pultruded reinforced FRP tubes according to claim 1, wherein the flange further comprises an annular portion located outside the cylindrical portion and concentrically disposed with the cylindrical portion, the annular portion fitting to an outer periphery of the end of the FRP tube.
3. The connecting structure of the pultruded reinforced FRP pipe according to claim 1, wherein the locking member comprises an anchor ring and at least two clamping pieces, the anchor ring has a tapered inner hole, the outer surfaces of the clamping pieces are matched with the shape of the inner hole of the anchor ring, and all the clamping pieces surround to form an inner cavity for matching with the connecting section of the cylindrical reinforced portion.
4. The connecting structure of the pultruded reinforced FRP pipe according to claim 1, 2 or 3, wherein the reinforcement and the FRP pipe are integrally formed by a pultrusion process.
5. The connecting structure of the pultruded reinforced FRP tube according to claim 1, wherein the flange has a plurality of second through holes formed therein.
6. The connecting structure of the pultruded reinforced FRP tube according to claim 1, wherein the flange is a metal flange.
7. The connecting structure of a pultruded reinforced FRP tube according to claim 1, wherein both ends of the cylindrical reinforcement portion have the connecting sections protruding out of the supporting portion; the flange plates are arranged at two ends of the FRP pipe.
8. The connecting structure of a pultruded reinforced FRP tube according to claim 1, wherein a weight-reduction hole is provided in a middle portion of the connecting portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921985370.XU CN211059581U (en) | 2019-11-15 | 2019-11-15 | Connecting structure of pultrusion reinforced FRP (fiber reinforced plastic) pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921985370.XU CN211059581U (en) | 2019-11-15 | 2019-11-15 | Connecting structure of pultrusion reinforced FRP (fiber reinforced plastic) pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211059581U true CN211059581U (en) | 2020-07-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921985370.XU Withdrawn - After Issue CN211059581U (en) | 2019-11-15 | 2019-11-15 | Connecting structure of pultrusion reinforced FRP (fiber reinforced plastic) pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211059581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762312A (en) * | 2019-11-15 | 2020-02-07 | 中国人民解放军陆军工程大学 | Connecting structure and connecting method of pultrusion reinforced FRP (fiber reinforced Plastic) pipe |
-
2019
- 2019-11-15 CN CN201921985370.XU patent/CN211059581U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110762312A (en) * | 2019-11-15 | 2020-02-07 | 中国人民解放军陆军工程大学 | Connecting structure and connecting method of pultrusion reinforced FRP (fiber reinforced Plastic) pipe |
| CN110762312B (en) * | 2019-11-15 | 2024-03-29 | 中国人民解放军陆军工程大学 | Connection structure and connection method of pultruded reinforced FRP pipe |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20200721 Effective date of abandoning: 20240329 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200721 Effective date of abandoning: 20240329 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |