CN220100699U - External stretching device of embedded prestressing force carbon fiber muscle - Google Patents
External stretching device of embedded prestressing force carbon fiber muscle Download PDFInfo
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- CN220100699U CN220100699U CN202320888273.9U CN202320888273U CN220100699U CN 220100699 U CN220100699 U CN 220100699U CN 202320888273 U CN202320888273 U CN 202320888273U CN 220100699 U CN220100699 U CN 220100699U
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- block
- carbon fiber
- tensioning
- end anchor
- fixed
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 68
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 68
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 67
- 210000003205 muscle Anatomy 0.000 title claims description 3
- 210000002435 tendon Anatomy 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Abstract
The utility model provides an in-line prestressed carbon fiber reinforcement external tensioning device, which comprises a carbon fiber tensioning assembly and a tensioning power assembly, wherein the carbon fiber tensioning assembly is connected with the carbon fiber tensioning power assembly; the carbon fiber tensioning assembly comprises a fixed end anchor seat, a tensioning end anchor seat, a fixed end anchor block, a tensioning end anchor block and a carbon fiber rib, one end of the carbon fiber rib is connected to the fixed end anchor seat through the fixed end anchor block, the other end of the carbon fiber rib is connected to the tensioning end anchor block, a screw rod part is arranged on the tensioning end anchor block, a stop block part is arranged on the tensioning end anchor seat, and the end part of the screw rod part penetrates through a through hole in the stop block part and is sleeved with a locking nut; the structure body surface is provided with a containing groove, the carbon fiber tensioning assembly is arranged in the containing groove, and the fixed end anchor seat and the tensioning end anchor seat are fixed in the containing groove. According to the technical scheme, the reverse tensioning technology is adopted, the jack is arranged in front of the anchor block of the tensioning end for pushing, the requirement on the rear space is greatly reduced, the space is saved, and the applicability of the anchor is expanded.
Description
Technical Field
The utility model relates to an external tensioning device for an embedded prestressed carbon fiber rib, and belongs to the technical field of construction.
Background
The prestressed carbon fiber tensioning device is widely applied to the technical field of construction industry at present, and is a tool for reinforcing structures such as concrete. The carbon fiber material is tensioned by a prestressing technology and then is adhered on a structural body so as to improve the bearing capacity and durability of the structure. Such devices typically consist of components such as tensioning mechanisms, anchors and carbon fibers, such as a prestressed carbon fiber tensioning device disclosed in applicant's prior patent application CN 207597277U. However, the jack is arranged at the outer side of the anchor seat of the tensioning end, so that an extra space must be outwards extended on the structural body to reserve a position for operating the jack, and the jack is very inconvenient when the construction area is narrow; in addition, the existing carbon fiber rib tensioning devices are all arranged on the surface of the structural body, so that after tensioning operation is finished, the surface of the structural body protrudes outwards, scratch is easily caused in other subsequent construction processes, obvious bulges can be formed on the surface of the structural body after construction is finished, attractive effect is affected, and the carbon fiber ribs are exposed outwards and cannot be effectively protected.
Disclosure of Invention
Therefore, the utility model aims to provide an embedded prestress carbon fiber rib tensioning device, wherein carbon fiber ribs can be embedded into a structure body, and tensioning is carried out on the outer side of the structure body.
In order to achieve the above purpose, the external stretching device of the embedded prestress carbon fiber rib is used for stretching a structural body and comprises a carbon fiber stretching assembly and a stretching power assembly; the carbon fiber tensioning assembly comprises a fixed end anchor seat, a tensioning end anchor seat, a fixed end anchor block, a tensioning end anchor block and a carbon fiber rib, one end of the carbon fiber rib is connected to the fixed end anchor seat through the fixed end anchor block, the other end of the carbon fiber rib is connected to the tensioning end anchor block, a screw rod part is arranged on the tensioning end anchor block, a stop block part is arranged on the tensioning end anchor seat, and the end part of the screw rod part penetrates through a through hole in the stop block part and is sleeved with a locking nut; the surface of the structure body is provided with an accommodating groove, the carbon fiber tensioning assembly is arranged in the accommodating groove, and the fixed end anchor seat and the tensioning end anchor seat are fixed in the accommodating groove; the tensioning power assembly comprises a fixed block, a moving block, an adjusting block and a guide screw rod penetrating through the fixed block, the moving block and the adjusting block, wherein the guide screw rod is provided with a counter-force nut and an adjusting nut, the counter-force nut is located on one side, far away from the moving block, of the fixed block, the adjusting nut is located on one side, far away from the moving block, of the adjusting block, a jack is arranged between the moving block and the adjusting block, one end of the jack abuts against the adjusting block, the other end of the jack abuts against the moving block, and the moving block abuts against the tensioning end anchor block.
The guide screw rods are two in parallel, and the jack is positioned between the two guide screw rods.
The fixing block is detachably fixed on the structural body.
The fixed block is detachably fixed on the tensioning end anchor.
The lower end of the moving block is provided with a lug part which downwards enters the accommodating groove and props against the stretching end anchor block.
The lug part is provided with a U-shaped groove, and the carbon fiber ribs penetrate through the U-shaped groove and are connected to the stretching end anchor blocks.
The stretching end anchor block comprises an anchor block body and an adapter fixed on the anchor block body, the carbon fiber ribs are connected to the anchor block body, and the screw rod part is positioned on the adapter.
The holding groove is including being used for holding stretch-draw end anchor pad's first holding district and be used for holding stretch-draw end anchor block's second holding district, first holding district is formed with the shoulder structure with the junction of second holding district, stretch-draw end anchor pad pushes up on the shoulder structure.
The fixed end anchor seat and the tensioning end anchor seat are fixed on the structural body through chemical anchor bolts.
By adopting the technical scheme, the embedded pre-stress carbon fiber rib external stretching device is characterized in that the carbon fiber stretching assembly is embedded into the accommodating groove on the structural body, the stretching power assembly is arranged on the outer side of the structural body, stretching of the carbon fiber stretching assembly is realized through the stretching power assembly, and the stretching power assembly can be removed after stretching is finished. Compared with the traditional forward stretching process, the in-vitro stretching device for the embedded prestressed carbon fiber ribs adopts the reverse stretching process, and the jack is arranged in front of the stretching end anchor block for pushing, so that the requirement on the rear space is greatly reduced, the space is saved, and the applicability of an anchor device is expanded; the parts are miniaturized, the applicability is stronger, and the small-sized components can be reinforced; compared with the traditional external prestress carbon fiber reinforcement structure, the carbon fiber reinforcement structure has the advantages that the carbon fiber reinforcement can be effectively protected by embedding the carbon fiber reinforcement into concrete, the carbon fiber reinforcement is prevented from being damaged by external force, and the carbon fiber reinforcement is better matched with the original structure.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded view of the tensioning end.
Fig. 3 is an exploded view of the tension end anchor and structure.
Detailed Description
The utility model is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1-3, the external stretching device of the embedded pre-stress carbon fiber rib is used for stretching a structural body 1 and comprises a carbon fiber stretching assembly and a stretching power assembly.
The carbon fiber tensioning assembly comprises a fixed end anchor seat 2, a tensioning end anchor seat 3, a fixed end anchor block 4, a tensioning end anchor block 5 and carbon fiber ribs 6. One end of the carbon fiber bar 6 is connected to the fixed end anchor seat 2 through the fixed end anchor block 4, and the other end is connected to the stretching end anchor block 5. The tensioning end anchor block 5 comprises an anchor block body 51 and an adapter 52 fixed on the anchor block body 51, the carbon fiber ribs 6 are connected to the anchor block body 51, a screw rod portion 521 is arranged on the adapter 52, a stop block portion 31 is arranged on the tensioning end anchor seat 3, and the end portion of the screw rod portion 521 penetrates through a through hole in the stop block portion 31 and is sleeved with a locking nut 7.
The surface of the structural body 1 is provided with a containing groove 100, the carbon fiber tensioning assembly is arranged in the containing groove 100, and the fixed end anchor seat 2 and the tensioning end anchor seat 3 are fixed in the containing groove 100 through chemical anchor bolts.
The tensioning power assembly comprises a fixed block 8, a movable block 9, an adjusting block 10 and guide screws 11 penetrating through the fixed block 8, the movable block 9 and the adjusting block 10, wherein the two guide screws 11 are arranged in parallel, and a jack 12 is positioned between the two guide screws 11.
The lead screw 11 is provided with a reaction nut 13 and an adjustment nut 14, the reaction nut 13 being located on the side of the fixed block 8 remote from the moving block 9, and the adjustment nut 14 being located on the side of the adjustment block 10 remote from the moving block 9. A jack 12 is arranged between the moving block 9 and the adjusting block 10, one end of the jack 12 is propped against the adjusting block 10, and the other end is propped against the moving block 9.
The lower end of the moving block 9 is provided with a bump portion 91, and the bump portion 91 is provided with a U-shaped groove 910. The carbon fiber ribs 6 pass through the U-shaped grooves 910, so that the convex block parts 91 are propped against the anchor block body 51, and when the jack 12 pushes the moving block 9, the convex block parts 91 can push the anchor block body 51 to move, so that the carbon fiber ribs 6 are tensioned.
The fixing block 8 is detachably fixed on the structural body 1 or the tensioning end anchor 3. In this embodiment, the fixing block 8 is fixed on the tensioning end anchor 3 by a bolt, and the fixing block 8 can be removed from the tensioning end anchor 3 after tensioning is completed.
The accommodating groove 100 comprises a first accommodating area 101 for accommodating the tensioning end anchor 3 and a second accommodating area 102 for accommodating the tensioning end anchor block 5, a shoulder structure 103 is formed at the connection part of the first accommodating area 101 and the second accommodating area 102, and the tensioning end anchor 3 is propped against the shoulder structure 103.
The embedded prestressed carbon fiber tendon external tensioning device of the utility model is used for the construction on a concrete structure body 1:
1. and positioning and paying off according to design requirements, grooving the concrete surface at the positions corresponding to the design positions, wherein the grooving depth of the positions of the anchor seat and the anchor block is 4cm, the grooving depth of the positions of the carbon fiber ribs is 3cm, and repairing and leveling the grooving positions of the anchor seat and the anchor block by adopting repair adhesive. And installing an anchor seat after finishing, and fixing by using a chemical anchor bolt.
2. And connecting the carbon fiber ribs with the anchor blocks at two ends, and connecting the adapter with the anchor block body and installing the adapter on the anchor seat.
3. The fixing block is fixed with the tensioning end anchor seat by bolts, the moving block, the adjusting block and the fixing block are arranged at the tensioning end side, the guide screw is arranged, the jack is arranged between the moving block and the adjusting block, and the counter-force nut and the adjusting nut are arranged on the guide screw.
4. And (5) taking protective measures, and starting pre-tensioning.
5. And (5) performing formal tensioning after confirming no errors, fixing the adapter by using a locking nut after tensioning, and removing the tensioning power assembly.
6. And filling up the grooved position by adopting epoxy mortar, standing and maintaining.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.
Claims (9)
1. An external stretching device of embedded prestressing force carbon fiber muscle, its characterized in that: the device is used for stretching the structural body and comprises a carbon fiber stretching assembly and a stretching power assembly; the carbon fiber tensioning assembly comprises a fixed end anchor seat, a tensioning end anchor seat, a fixed end anchor block, a tensioning end anchor block and a carbon fiber rib, one end of the carbon fiber rib is connected to the fixed end anchor seat through the fixed end anchor block, the other end of the carbon fiber rib is connected to the tensioning end anchor block, a screw rod part is arranged on the tensioning end anchor block, a stop block part is arranged on the tensioning end anchor seat, and the end part of the screw rod part penetrates through a through hole in the stop block part and is sleeved with a locking nut; the surface of the structure body is provided with an accommodating groove, the carbon fiber tensioning assembly is arranged in the accommodating groove, and the fixed end anchor seat and the tensioning end anchor seat are fixed in the accommodating groove; the tensioning power assembly comprises a fixed block, a moving block, an adjusting block and a guide screw rod penetrating through the fixed block, the moving block and the adjusting block, wherein the guide screw rod is provided with a counter-force nut and an adjusting nut, the counter-force nut is located on one side, far away from the moving block, of the fixed block, the adjusting nut is located on one side, far away from the moving block, of the adjusting block, a jack is arranged between the moving block and the adjusting block, one end of the jack abuts against the adjusting block, the other end of the jack abuts against the moving block, and the moving block abuts against the tensioning end anchor block.
2. The in-line pre-stressed carbon fiber tendon external tensioning device of claim 1, wherein: the guide screw rods are two in parallel, and the jack is positioned between the two guide screw rods.
3. The in-line pre-stressed carbon fiber tendon external tensioning device of claim 1, wherein: the fixing block is detachably fixed on the structural body.
4. The in-line pre-stressed carbon fiber tendon external tensioning device of claim 1, wherein: the fixed block is detachably fixed on the tensioning end anchor.
5. An in-line pre-stressed carbon fiber tendon external tensioning apparatus as claimed in any one of claims 1 to 4 and in which: the lower end of the moving block is provided with a lug part which downwards enters the accommodating groove and props against the stretching end anchor block.
6. The in-line pre-stressed carbon fiber tendon external tensioning device of claim 5, wherein: the lug part is provided with a U-shaped groove, and the carbon fiber ribs penetrate through the U-shaped groove and are connected to the stretching end anchor blocks.
7. The in-line pre-stressed carbon fiber tendon external tensioning device of claim 6, wherein: the stretching end anchor block comprises an anchor block body and an adapter fixed on the anchor block body, the carbon fiber ribs are connected to the anchor block body, and the screw rod part is positioned on the adapter.
8. An in-line pre-stressed carbon fiber tendon external tensioning apparatus as claimed in any one of claims 1 to 4 and in which: the holding groove is including being used for holding stretch-draw end anchor pad's first holding district and be used for holding stretch-draw end anchor block's second holding district, first holding district is formed with the shoulder structure with the junction of second holding district, stretch-draw end anchor pad pushes up on the shoulder structure.
9. An in-line pre-stressed carbon fiber tendon external tensioning apparatus as claimed in any one of claims 1 to 4 and in which: the fixed end anchor seat and the tensioning end anchor seat are fixed on the structural body through chemical anchor bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320888273.9U CN220100699U (en) | 2023-04-19 | 2023-04-19 | External stretching device of embedded prestressing force carbon fiber muscle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320888273.9U CN220100699U (en) | 2023-04-19 | 2023-04-19 | External stretching device of embedded prestressing force carbon fiber muscle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220100699U true CN220100699U (en) | 2023-11-28 |
Family
ID=88842075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320888273.9U Active CN220100699U (en) | 2023-04-19 | 2023-04-19 | External stretching device of embedded prestressing force carbon fiber muscle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220100699U (en) |
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2023
- 2023-04-19 CN CN202320888273.9U patent/CN220100699U/en active Active
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