CN115749139A - Prestressed carbon fiber bar with two-end conical anchoring end and manufacturing method thereof - Google Patents
Prestressed carbon fiber bar with two-end conical anchoring end and manufacturing method thereof Download PDFInfo
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- CN115749139A CN115749139A CN202211653761.8A CN202211653761A CN115749139A CN 115749139 A CN115749139 A CN 115749139A CN 202211653761 A CN202211653761 A CN 202211653761A CN 115749139 A CN115749139 A CN 115749139A
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 88
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 88
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- 238000004873 anchoring Methods 0.000 title claims abstract description 38
- 230000002787 reinforcement Effects 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims description 96
- 238000007598 dipping method Methods 0.000 claims description 35
- 239000003292 glue Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 230000000630 rising effect Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000001723 curing Methods 0.000 description 59
- 238000010586 diagram Methods 0.000 description 5
- 238000013007 heat curing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The invention relates to a prestressed carbon fiber bar with two-end conical anchoring end heads and a manufacturing method thereof, wherein the prestressed carbon fiber bar is composed of a plurality of carbon fiber wires; the prestressed carbon fiber reinforcement includes: the head end conical end and the tail end conical end are respectively positioned at two ends of the middle part, the head end conical end and the tail end conical end are respectively composed of a small cylindrical section, a frustum section and a large cylindrical section which are sequentially connected, and the outer diameter of the small cylindrical section is equal to that of the middle part. The invention actively changes the type of the carbon fiber rib to improve the anchorage performance and the manufacturing difficulty of the anchorage device, conical anchorage ends are manufactured at two ends of the prestressed carbon fiber rib, the anchorage ends are matched with the inner conical anchorage device for use, and the anchorage mode can resist the deformation of the frustum section through the inner conical anchorage device locking plate to improve the anchorage performance.
Description
Technical Field
The invention relates to the technical field of engineering, in particular to a prestressed carbon fiber bar with two conical anchoring ends and a manufacturing method thereof.
Background
In recent years, carbon fiber composite materials are widely applied in the technical field of engineering, wherein the carbon fiber composite materials applied in the technical field of engineering comprise carbon fiber cloth materials, carbon fiber plates and carbon fiber reinforced materials, and the carbon fiber reinforced materials are all in a linear rod shape. When in use, the carbon fiber reinforced material needs to be matched with an anchoring anchorage device for use.
Currently, two types of anchorage devices are generally available in the market, namely an outer cone-shaped locking plate single-beam anchoring mode and an inner cone-shaped anchorage device multi-beam group anchoring mode, but the two types of anchorage devices are both mainly based on friction force generated by extrusion of a mixture of a locking plate and colloid and a straight carbon fiber rib, the anchorage device is very long and very thick due to the anchoring mode (the common length of the anchorage device is about 25 times of the effective use diameter of the carbon fiber rib material), in addition, the anchoring performance of the anchoring mode is not ideal, and loosening and splitting phenomena often occur in the use process.
Disclosure of Invention
The invention aims to solve the technical problem of providing a prestressed carbon fiber bar with two-end conical anchoring end heads and a manufacturing method thereof.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
on one hand, the prestressed carbon fiber bar with the conical anchoring end heads at the two ends is provided, and the prestressed carbon fiber bar is composed of a plurality of carbon fiber wires;
the prestressed carbon fiber rib includes: the middle part, and be located respectively head end toper end and the tail end toper end at middle part both ends, head end toper end and tail end toper end constitute by the small circle post section, frustum section and the big cylinder section that connect gradually, just the external diameter of small circle post section with the external diameter of middle part equals.
In one embodiment of the invention, the cone angle of the frustum section is 2 to 5 °.
On the other hand, the manufacturing method of the prestressed carbon fiber bar with the conical anchoring end heads at the two ends comprises the following steps:
first step, feeding
Feeding a plurality of carbon fiber yarns into a yarn arranging device;
the device comprises a yarn arranging device, a yarn guiding device, a lifting device and a control device, wherein the yarn arranging device is provided with a traction device, a glue dipping line and a heating and curing line are sequentially arranged along the traction direction of the traction device, the glue dipping line is provided with a liftable glue dipping pool, and the heating and curing line is provided with a heating device; when the dipping pond is in a rising state, the carbon fiber yarns on the dipping line can be dipped, and the initial state of the dipping pond is a falling state;
second step, fabrication of the head end taper end and intermediate section
The carbon fiber yarns move forwards under the traction action of the traction device, move to the head end, enter a heating and curing line for a preset length, and then lift up the glue dipping tank, the carbon fiber yarns continuously move forwards until the head ends of the carbon fiber yarns enter the installed head end heating and curing device and then stop, the head end conical end is manufactured under the action of the head end heating and curing device, and the head end heating and curing device is removed after the head end conical end is manufactured;
in the process, the middle part after gum dipping is heated and cured under the action of a heating device to realize the manufacture of the middle part;
thirdly, manufacturing the tail end conical end
And after the length of the middle part meets the requirement, the impregnation tank is lowered, the plurality of carbon fibers continuously move forwards in the process until the carbon fibers enter the installed tail end heating and curing device, and the tail end conical end is manufactured under the action of the tail end heating and curing device.
As an embodiment of the invention, before the second step, the step further comprises: a head end heating and curing device is arranged at the front end of the heating device on the heating and curing line;
before the third step, the steps further include: and a tail end heating and curing device is arranged at the rear end of the heating device on the heating and curing line.
As an embodiment of the invention, the inner walls of the head end heating and curing device in the second step and the tail end heating and curing device in the third step are coated with the impregnating colloid.
As an embodiment of the invention, the head end heat curing apparatus in the second step and the tail end heat curing apparatus in the third step each include: the heating and curing device comprises a heating and curing shell, an inner conical through hole arranged in the heating and curing shell, and a large-end wire splitting plate and a small-end wire splitting plate which are arranged in the inner conical through hole;
in the head end heating and curing device, a large end wire splitting plate is arranged at the front end of a small end wire splitting plate; in the tail end heating and solidifying device, the small end filament separating plate is arranged at the front end of the large end filament separating plate.
As an embodiment of the invention, the inner tapered through hole comprises, in order: a large cylindrical hole, a conical hole and a small cylindrical hole;
the large-end wire separating plate is arranged at the boundary of the large cylindrical hole and the tapered hole, and the outer ring side wall of the large-end wire separating plate is fixedly connected with the inner ring side wall of the large cylindrical hole; the small-end wire separating plate is arranged at the boundary of the conical hole and the small cylindrical hole, and the outer ring side wall of the small-end wire separating plate is fixedly connected with the inner ring side wall of the small cylindrical hole.
As an embodiment of the invention, a plurality of plate holes for the carbon fiber to pass through are distributed on the large-end wire distributing plate and the small-end wire distributing plate.
As an embodiment of the invention, the heat-curing housing is detachably connected by an upper die and a lower die.
As an embodiment of the invention, the taper angle of the tapered hole is 2 ° to 5 °; the length of the inner conical through hole is 5-15 times of the diameter of the small cylindrical hole.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
according to the prestressed carbon fiber bar with the conical anchoring ends at the two ends, the anchoring performance and the manufacturing difficulty of the anchorage device are improved actively by changing the type of the carbon fiber bar, the conical anchoring ends are manufactured at the two ends of the fiber rope, and the anchoring ends and the inner conical anchorage device are matched for use, so that the deformation of the frustum section can be resisted by the locking plate of the inner conical anchorage device, and the anchoring performance is improved.
According to the manufacturing method of the prestressed carbon fiber bar with the two-end conical anchoring end, provided by the embodiment of the invention, on the basis of the existing equipment for manufacturing the linear rod-shaped carbon fiber bar, the manufacturing of the prestressed carbon fiber bar with the two-end conical anchoring end can be realized only by arranging the glue dipping line and the heating and curing line, arranging the liftable glue dipping pool on the glue dipping line and detachably installing the head end heating and curing device and the tail end heating and curing device on the heating and curing line, so that the manufacturing method is simple and convenient in preparation mode, simple in structure, low in manufacturing cost and suitable for large-scale popularization.
Drawings
Fig. 1 is a schematic structural diagram of a prestressed carbon fiber bar provided in embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view illustrating a connection between a prestressed carbon fiber reinforced bar and an anchor according to embodiment 1 of the present invention.
FIG. 3 is a schematic illustration of the manufacture of a head end cone and intermediate section provided in example 2 of the present invention.
Fig. 4 is a schematic diagram of a middle portion according to embodiment 2 of the present invention.
FIG. 5 is a schematic diagram of the manufacture of a middle section and a trailing tapered end according to example 2 of the present invention.
Fig. 6 is a schematic structural diagram of a head-end heating and curing apparatus according to embodiment 2 of the present invention.
Fig. 7 is a schematic structural view of another head-end heating and curing apparatus provided in embodiment 2 of the present invention.
FIG. 8 is a sectional view of a head end heating and curing apparatus according to embodiment 2 of the present invention.
Fig. 9 is a cross-sectional view of an end heating and curing apparatus provided in embodiment 2 of the present invention.
Fig. 10 is a sectional view of an upper mold provided in embodiment 2 of the present invention.
Fig. 11 is a schematic structural diagram of a large-end wire splitting plate and a small-end wire splitting plate provided in embodiment 2 of the present invention.
Wherein: 1. the prestressed carbon fiber reinforcement comprises a prestressed carbon fiber reinforcement 1-1 middle part, 1-2 head end conical ends, 1-2-1 large cylindrical sections, 1-2-2 frustum sections, 1-2-3 small cylindrical sections, 1-3 tail end conical ends, 2 threaded through holes, 201 anchor sleeve mechanisms, 3 inner conical anchor locking plates, 4 anchor backing plates, 5 locking nuts, 6 bonding glue, 7 pressing plates and 8 tension rods;
10. the method comprises the following steps of (1) carbon fiber yarns, 11 yarn arranging devices, 12 gum dipping lines, 13 heating and curing lines, 14 gum dipping pools, 15 head end heating and curing devices, 16 heating devices and 17 tail end heating and curing devices;
17-1 heating and curing shell, 17-1-1 upper die, 17-1-2 upper die body, 17-1-3 upper die cover, 17-1-4 lower die, 17-1-5 lower die body, 17-1-6 lower die support, 17-2 inner conical through hole, 17-2-1 large cylindrical hole, 17-2-2 conical hole, 17-3-3 small cylindrical hole, 17-3 large end wire separating plate, 17-4 small end wire separating plate and 17-4-1 plate hole.
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 detail and fully with reference to the following embodiments.
Example 1
The embodiment of the invention provides a prestressed carbon fiber bar with two-end conical anchoring ends, which is composed of a plurality of carbon fiber wires and can be formed by heating and curing a plurality of carbon fiber wires 10.
As shown in fig. 1, the prestressed carbon fiber reinforced bar 1 includes: the device comprises a middle part 1-1, and a head end conical end 1-2 and a tail end conical end 1-3 which are respectively positioned at two ends of the middle part 1-1, wherein the head end conical end 1-2 and the tail end conical end 1-3 are respectively composed of a small cylindrical section 1-2-3, a frustum section 1-2-2 and a large cylindrical section 1-2-1 which are sequentially connected, and the outer diameter of the small cylindrical section 1-2-3 is equal to that of the middle part 1-1.
Wherein the cone angle (i.e., angle α in fig. 1) of the frustum section 1-2-2 is 2 to 5 °.
The prestressed carbon fiber bar with the conical anchoring end heads at the two ends provided by the embodiment of the invention is matched with an inner conical anchorage device when in use, and as shown in figure 2, the anchorage device comprises:
prestressing force carbon fiber muscle anchor assembly, it includes: the anchor sleeve mechanism 201 is provided with at least one threaded through hole 2, the head part of a prestressed carbon fiber rod and an inner conical anchor locking plate 3 are arranged in each threaded through hole 2, the outer wall of a large cylindrical section 1-2-1 of the head part is adhered to the inner wall of the threaded through hole 2, a frustum section 1-2-2 and a small cylindrical section 1-2-3 are adhered to the inner wall of the inner conical anchor locking plate 3, and the inner conical anchor locking plate 3 is in threaded connection with the inner wall of the threaded through hole 2; a pressure plate 7 and a tension rod accommodating space which are sequentially positioned above the large cylindrical section 1-2-1 are also arranged in the threaded through hole 2;
a fastener, the fastener comprising: the anchor backing plate 4 and lock nut 5, lock nut 5 passes through the external screw thread of anchor sleeve mechanism with prestressing force carbon fiber reinforcement anchor assembly is connected.
According to the prestressed carbon fiber bar with the conical anchoring ends at the two ends, the anchoring performance and the manufacturing difficulty of the anchorage device are improved actively by changing the type of the carbon fiber bar, the conical anchoring ends are manufactured at the two ends of the fiber rope, and the anchoring ends and the inner conical anchorage device are matched for use, so that the deformation of the frustum section can be resisted by the locking plate of the inner conical anchorage device, and the anchoring performance is improved.
Example 2
The embodiment of the invention provides a method for manufacturing a prestressed carbon fiber bar with two-end conical anchoring ends, wherein one end far away from a yarn arranging device 11 is a front end and the other end far away from the yarn arranging device 11 is a rear end along the traction direction of a traction device. As shown in fig. 3-5, the method comprises the following steps:
first step, feeding
Feeding a plurality of carbon fiber yarns 10 into a yarn arranging device 11;
the yarn arranging equipment 11 is provided with a traction device, a rubber dipping line 12 and a heating and curing line 13 are sequentially arranged along the traction direction of the traction device, the rubber dipping line 12 is provided with a liftable rubber dipping pool 14, and the heating and curing line 13 is provided with a heating device 16; when the dipping pond 14 is in a rising state, the carbon fiber yarn 10 on the dipping line 12 can be dipped, and the initial state of the dipping pond 14 is a falling state;
second step, fabrication of the head end taper end and intermediate section
The carbon fiber yarns 10 move forwards under the traction action of the traction device, move to the head end and enter the heating and curing line 13 for a preset length, then lift the glue dipping tank 14, the carbon fiber yarns 10 continuously move forwards until the head ends of the carbon fiber yarns 10 enter the installed head end heating and curing device 15, then stop moving, the manufacturing of the head end conical end is realized under the action of the head end heating and curing device 15, and the head end heating and curing device 15 is removed after the manufacturing of the head end conical end is finished;
in the above process, the middle part after gum dipping is heated and cured under the action of the heating device 16 to realize the manufacture of the middle part;
third, manufacturing the end taper end
And after the length of the middle part meets the requirement, the dipping tank 14 is lowered, in the process, the plurality of carbon fibers continuously move forwards until the carbon fibers enter the installed tail end heating and curing device 17, and the tail end conical end is manufactured under the action of the tail end heating and curing device 17.
Of course, before the second step, the steps further include: a head end heating and curing device 15 is installed at the front end of a heating device 16 on the heating and curing line 13;
before the fourth step, the method further comprises: a tail end heating and curing device 17 is installed at the rear end of the heating device 16 on the heating and curing line 13.
In addition, since the head ends and the tail ends of the carbon fiber filaments 10 are not dipped in glue in the glue dipping tank 14, in order to manufacture the head-end tapered end and the tail-end tapered end, the inner walls of the head-end heating and curing device 15 in the second step and the inner walls of the tail-end heating and curing device 17 in the third step are coated with impregnating glue, and the impregnating glue can be manually coated.
Further, in order to ensure that the plurality of carbon fiber filaments 10 can be manufactured into the head-end tapered end and the tail-end tapered end under the action of the head-end heating and curing device 15, the structures of the head-end heating and curing device 15 and the tail-end heating and curing device 17 are specifically described below.
In one possible implementation, as shown in fig. 6-9, the head end heat curing unit 15 and the tail end heat curing unit 17 each include: the heating and curing device comprises a heating and curing shell 17-1, an inner conical through hole 17-2 arranged in the heating and curing shell 17-1, and a large-end wire dividing plate 17-3 and a small-end wire dividing plate 17-4 arranged in the inner conical through hole 17-2.
As shown in fig. 8 and 9, the inner tapered through hole 17-2 includes, in order: a large cylindrical hole 17-2-1, a tapered hole 17-2-2 and a small cylindrical hole 17-2-3; the taper angle (i.e., the angle theta in fig. 10) of the tapered hole 17-2-2 is 2 degrees to 5 degrees; the length of the inner conical through hole 17-2 is 5-15 times of the diameter of the small cylindrical hole 17-2-3.
The large-end wire separating plate 17-3 is arranged at the boundary of the large cylindrical hole 17-2-1 and the conical hole 17-2-2, and the outer ring side wall of the large-end wire separating plate 17-3 is fixedly connected with the inner ring side wall of the large cylindrical hole 17-2-1; the small-end wire separating plate 17-4 is arranged at the boundary of the conical hole 17-2-2 and the small cylindrical hole 17-2-3, and the outer ring side wall of the small-end wire separating plate 17-4 is fixedly connected with the inner ring side wall of the small cylindrical hole 17-2-3.
As shown in fig. 11, the large-end filament separating plate 17-3 and the small-end filament separating plate 17-4 have different structures, only different sizes, and a plurality of plate holes 17-4-1 for the carbon fiber filaments 10 to pass through are distributed on the large-end filament separating plate 17-3 and the small-end filament separating plate, and in the head-end heating and curing device 15, the large-end filament separating plate 17-3 is arranged at the front end of the small-end filament separating plate 17-4; in the tail end heating and curing device 17, a small end wire separating plate 17-4 is arranged at the front end of a large end wire separating plate 17-3.
Therefore, the plurality of carbon fiber yarns 10 can obtain a structure with a large front end and a small rear end under the action of the head end heating and curing device 15; and a structure with a small front end and a small rear end can be obtained under the action of the tail end heating and curing device 17 so as to ensure that the middle part is connected with the small cylinder at the head end and the small cylinder at the tail end, and the structure shown in figure 1 is obtained.
In addition, in order to facilitate manual application of the dip colloid to the inner wall of the heat-curable housing 17-1 (i.e., the side wall of the inwardly tapered through hole 17-2), as shown in fig. 6 to 9, the heat-curable housing 17-1 may be provided as a separate structure which is detachably connected by the upper mold 17-1-1 and the lower mold 17-1-4. Further, for convenient installation and disassembly, the upper mold 17-1-1 may further specifically include an upper mold body 17-1-2 and an upper mold cover 17-1-3 located on the upper mold body 17-1-2, the lower mold 17-1-4 may further specifically include a lower mold body 17-1-5 and a lower mold support 17-1-6 located on the lower mold body 17-1-5, and the inner tapered through hole 17-2 is located in a structure formed by connecting the upper mold body 17-1-2 and the lower mold body 17-1-5.
According to the manufacturing method of the prestressed carbon fiber bar with the two-end conical anchoring end, provided by the embodiment of the invention, on the basis of the existing equipment for manufacturing the linear prestressed carbon fiber bar, the manufacturing of the prestressed carbon fiber bar with the two-end conical anchoring end can be realized only by arranging the glue dipping line and the heating and curing line, arranging the liftable glue dipping pool on the glue dipping line and detachably installing the head end heating and curing device and the tail end heating and curing device on the heating and curing line, so that the manufacturing method is simple and convenient in preparation mode, simple in structure, low in manufacturing cost and suitable for large-scale popularization.
Claims (10)
1. The prestressed carbon fiber bar is characterized in that the prestressed carbon fiber bar is composed of a plurality of carbon fiber wires;
the prestressed carbon fiber reinforcement includes: the head end conical end and the tail end conical end are respectively positioned at two ends of the middle part, the head end conical end and the tail end conical end are respectively composed of a small cylindrical section, a frustum section and a large cylindrical section which are sequentially connected, and the outer diameter of the small cylindrical section is equal to that of the middle part.
2. The prestressed carbon fiber bar with two-end conical anchoring end according to claim 1, wherein the cone angle of the frustum section is 2-5 °.
3. A manufacturing method of a prestressed carbon fiber bar with two-end conical anchoring end heads is characterized by comprising the following steps:
first step, feeding
Feeding a plurality of carbon fiber yarns into a yarn arranging device;
the device comprises a yarn arranging device, a yarn guiding device, a lifting device, a heating and curing line, a yarn guiding device and a yarn guiding device, wherein the yarn arranging device is provided with a traction device, a glue dipping line and the heating and curing line are sequentially arranged along the traction direction of the traction device, the glue dipping line is provided with a liftable glue dipping pool, and the heating and curing line is provided with a heating device; when the dipping pond is in a rising state, the carbon fiber yarns on the dipping line can be dipped, and the initial state of the dipping pond is a falling state;
second step, fabrication of the head end taper end and intermediate section
The carbon fiber yarns move forwards under the traction action of the traction device, move to the head end, enter a heating and curing line for a preset length, and then lift up the glue dipping tank, the carbon fiber yarns continuously move forwards until the head ends of the carbon fiber yarns enter the installed head end heating and curing device and then stop, the head end conical end is manufactured under the action of the head end heating and curing device, and the head end heating and curing device is removed after the head end conical end is manufactured;
in the process, the middle part after gum dipping is heated and cured under the action of a heating device to realize the manufacture of the middle part;
third, manufacturing the end taper end
And after the length of the middle part meets the requirement, the dipping tank is lowered, the plurality of carbon fibers continuously move forwards in the process until the carbon fibers enter the installed tail end heating and curing device, and the tail end conical end is manufactured under the action of the tail end heating and curing device.
4. The method for manufacturing the prestressed carbon fiber reinforcement with the conical anchoring end at both ends according to claim 3, wherein before the second step, the steps further comprise: a head end heating and curing device is arranged at the front end of the heating device on the heating and curing line;
before the third step, the steps further include: and a tail end heating and curing device is arranged at the rear end of the heating device on the heating and curing line.
5. The method for manufacturing the prestressed carbon fiber reinforced bar with the two-end conical anchoring end according to claim 3, wherein the inner walls of the head end heating and curing device in the second step and the tail end heating and curing device in the third step are coated with the impregnating compound.
6. The method for manufacturing the prestressed carbon fiber reinforced bar with the two-end conical anchor end according to claim 3, wherein the head end heating and curing device in the second step and the tail end heating and curing device in the third step each comprise: the heating and curing device comprises a heating and curing shell, an inner conical through hole arranged in the heating and curing shell, and a large-end wire splitting plate and a small-end wire splitting plate which are arranged in the inner conical through hole;
in the head end heating and curing device, a large end wire splitting plate is arranged at the front end of a small end wire splitting plate; in the tail end heating and solidifying device, the small end filament separating plate is arranged at the front end of the large end filament separating plate.
7. The method for manufacturing the prestressed carbon fiber bar with the two-end conical anchoring end according to claim 6, wherein the inner conical through hole comprises the following steps: a large cylindrical hole, a conical hole and a small cylindrical hole;
the large-end wire separating plate is arranged at the boundary of the large cylindrical hole and the tapered hole, and the outer ring side wall of the large-end wire separating plate is fixedly connected with the inner ring side wall of the large cylindrical hole; the small-end wire separating plate is arranged at the boundary of the conical hole and the small cylindrical hole, and the outer ring side wall of the small-end wire separating plate is fixedly connected with the inner ring side wall of the small cylindrical hole.
8. The method for manufacturing the prestressed carbon fiber bar with the two-end conical anchoring end according to claim 6 or 7, wherein a plurality of plate holes for the carbon fiber wires to pass through are distributed on the large-end wire dividing plate and the small-end wire dividing plate.
9. The method for manufacturing the prestressed carbon fiber reinforcement with the conical anchoring ends at two ends according to claim 6, wherein the heating and curing shell is detachably connected by an upper die and a lower die.
10. The manufacturing method of the prestressed carbon fiber bar with the two-end conical anchoring end according to claim 7, wherein the taper angle of the conical hole is 2-5 degrees; the length of the inner conical through hole is 5-15 times of the diameter of the small cylindrical hole.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115653206A (en) * | 2022-12-22 | 2023-01-31 | 太原轨道交通集团有限公司 | Prestressed carbon fiber reinforced material inner cone type anchorage device and assembling method thereof |
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