CN210439165U - Prestressed carbon fiber tensioning device - Google Patents
Prestressed carbon fiber tensioning device Download PDFInfo
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- CN210439165U CN210439165U CN201921067704.5U CN201921067704U CN210439165U CN 210439165 U CN210439165 U CN 210439165U CN 201921067704 U CN201921067704 U CN 201921067704U CN 210439165 U CN210439165 U CN 210439165U
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Abstract
The utility model discloses a prestressed carbon fiber tensioning device, which comprises a first base, a first anchor block, a tensioning cable, a second anchor block, a second base and a jack, wherein the fixed end anchor block and the tensioning end anchor block are respectively fixed at two ends of the tensioning cable; the tensioning cable is wound around at least one pulley so as to form at least two parallel sections which are parallel to each other; the jack is used for pulling the first anchor block, the second anchor block or the pulley through the tensioning screw rod. Adopt above-mentioned technical scheme, the utility model discloses a prestressing force carbon fiber tensioning equipment can make the pulling force between first base and the second base be the tensile at least twice that the inhaul cable both ends received through setting up the pulley to can effectively improve the pulling force between first base and the second base.
Description
Technical Field
The utility model relates to a prestressing force carbon fiber tensioning equipment belongs to bridge concrete prestressing force tensioning equipment technical field.
Background
At present, a bridge mostly adopts a prestressed reinforced concrete structure, a prestressed tensioning cable used in a bridge concrete structure reinforcing project is usually in a strip shape, a belt shape or a column shape, and a tensioning prestressed reinforcing method thereof is conventionally used in a pre-tensioning method or a post-tensioning method. For example, the prior application CN107724258A of the applicant discloses a prestressed carbon fiber tensioning device, as shown in fig. 1, which includes a fixed end base 11, a fixed end anchor block 12, a carbon fiber tensioning cable 3, a tensioning end anchor block 22 and a tensioning end base 21, wherein the fixed end anchor block 12 and the tensioning end anchor block 22 are cylindrical and fixed at two ends of the tensioning cable 3 respectively; the fixed end anchor block 12 is connected with one end of a fixed screw 13, and the other end of the fixed screw 13 penetrates through a fixed end penetrating hole penetrating through the fixed end base 11 and then is screwed with a fixed nut 140; the tensioning end anchor block 22 is connected with one end of a tensioning screw 23, and the other end of the tensioning screw 23 penetrates through a tensioning end penetrating hole penetrating through the tensioning end base 21 and then is connected to the jack 4; a concave cavity 211 is formed in the tensioning end base 21, and the tensioning screw 23 penetrates through the concave cavity 211; a reaction nut 240 is arranged in the cavity 211, and the reaction nut 240 can move synchronously with the tensioning screw 23 in the cavity 211 when the tensioning screw 23 is pulled by the jack 4, and is used for being screwed to the side wall position of the cavity 211 close to the tensioning end anchor block 22 to prevent the tensioning cable 3 from contracting when the jack 4 releases the stroke and after the tensioning operation is finished. At present, the tension force applied to the fixed end base 11 and the tensioning end base 21 in the tensioning device is the tension force applied to both ends of the tensioning cable 3, and if the tension force applied to the fixed end base 11 and the tensioning end base 21 is to be increased, the tension force applied to the tensioning cable 3 must be increased. Meanwhile, the pulling force between the fixed end base 11 and the tensioning end base 21 must be smaller than the pulling force threshold F of the tensioning cable 3, and once the bridge body deforms, the pulling force between the fixed end base 11 and the tensioning end base 21 is larger than the pulling force threshold F of the tensioning cable 3, so that the tensioning cable 3 is easily broken.
SUMMERY OF THE UTILITY MODEL
Therefore, an object of the utility model is to provide a prestressing force carbon fiber tensioning equipment can make the pulling force between first base and the second base be greater than the pulling force threshold value of stretch-draw line.
In order to achieve the above object, the prestressed carbon fiber tensioning device of the present invention comprises a first base, a first anchor block, a tensioning cable, a second anchor block, a second base and a jack, wherein the first anchor block and the second anchor block are respectively fixed at two ends of the tensioning cable; the tensioning cable is wound around at least one pulley so as to form at least two parallel sections which are parallel to each other; the jack is used for pulling the first anchor block, the second anchor block or the pulley through the tensioning screw rod.
The pulley is one.
The jack pass through stretch-draw screw connect in the pulley, the jack is in on the first base, first anchor block and second anchor block with the second base is fixed mutually.
A concave cavity is formed in the first base, and the tensioning screw penetrates through the concave cavity; a counter-force nut is arranged on the tensioning screw and in the concave cavity; the jack is a feed-through jack, and the tensioning screw penetrates through a feed-through pore passage on the axis of the jack and then is in threaded connection with a tensioning nut.
The pulley is a plurality of.
The jack is connected to one of the pulleys through a tensioning screw, and the jack is arranged on the first base.
A concave cavity is formed in the first base, and the tensioning screw penetrates through the concave cavity; a counter-force nut is arranged on the tensioning screw and in the concave cavity; the jack is a feed-through jack, and the tensioning screw penetrates through a feed-through pore passage on the axis of the jack and then is in threaded connection with a tensioning nut.
The cross section of the tensioning cable is circular.
Adopt above-mentioned technical scheme, the utility model discloses a prestressing force carbon fiber tensioning equipment can make the pulling force between first base and the second base be the tensile at least twice that the inhaul cable both ends received through setting up the pulley to can effectively improve the pulling force between first base and the second base.
Drawings
Fig. 1 is a schematic structural diagram of a prestressed carbon fiber tensioning device in the prior art.
Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in the figures, the present embodiment provides a prestressed carbon fiber tensioning device, which includes a first base 51, a first anchor block 52, a tensioning cable 3, a second anchor block 62, a second base 61, and a jack 4, where the first anchor block and the second anchor block are respectively fixed at two ends of the tensioning cable 3; the tension cable 3 is wound around at least one pulley 7 so as to form at least two parallel sections which are parallel to each other; the jack 4 is used for pulling the first anchor block 52, the second anchor block 62 or one pulley 7 through a tensioning screw 8.
As shown in fig. 2, in the first embodiment of the present invention, there is one pulley 7.
The jack 4 is connected to the pulley 7 through a tension screw 8, the jack 4 is jacked on the first base 51, and the first anchor block 52 and the second anchor block 62 are fixed with the second base 61.
A concave cavity is formed in the first base 51, and the tensioning screw 8 penetrates through the concave cavity; a reaction nut 90 is arranged on the tensioning screw rod 8 and in the concave cavity; the jack 4 is a through jack, and the tensioning screw 8 penetrates through a through hole on the axis of the jack 4 and then is in threaded connection with the tensioning nut 9.
As shown in fig. 3, in the second embodiment of the present invention, there are two pulleys 7.
Of the two pulleys 7, the jack 4 is connected to one of the pulleys 7 by a tension screw 8, and the jack 4 is supported on the first base 51.
A concave cavity is formed in the first base 51, and the tensioning screw 8 penetrates through the concave cavity; a reaction nut 90 is arranged on the tensioning screw rod 8 and in the concave cavity; the jack 4 is a through jack, and the tensioning screw 8 penetrates through a through hole on the axis of the jack 4 and then is in threaded connection with the tensioning nut 9.
The cross section of the tensioning cable 3 is circular.
Adopt above-mentioned technical scheme, the utility model discloses a prestressing force carbon fiber tensioning equipment can make the pulling force between first base 51 and the second base 61 be the tensile at least twice that the cable 3 both ends received through setting up pulley 7 to can effectively improve the pulling force between first base 51 and the second base 61.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (8)
1. The utility model provides a prestressing force carbon fiber tensioning equipment which characterized in that: the tensioning device comprises a first base, a first anchor block, a tensioning cable, a second anchor block, a second base and a jack, wherein the first anchor block and the second anchor block are respectively fixed at two ends of the tensioning cable; the tensioning cable is wound around at least one pulley so as to form at least two parallel sections which are parallel to each other; the jack is used for pulling the first anchor block, the second anchor block or the pulley through the tensioning screw rod.
2. A prestressed carbon fiber tensioning device according to claim 1, wherein: the pulley is one.
3. A prestressed carbon fiber tensioning device according to claim 2, wherein: the jack pass through stretch-draw screw connect in the pulley, the jack is in on the first base, first anchor block and second anchor block with the second base is fixed mutually.
4. A prestressed carbon fiber tensioning device according to claim 3, wherein: a concave cavity is formed in the first base, and the tensioning screw penetrates through the concave cavity; a counter-force nut is arranged on the tensioning screw and in the concave cavity; the jack is a feed-through jack, and the tensioning screw penetrates through a feed-through pore passage on the axis of the jack and then is in threaded connection with a tensioning nut.
5. A prestressed carbon fiber tensioning device according to claim 2, wherein: the pulley is a plurality of.
6. The prestressed carbon fiber tensioning device according to claim 5, wherein: the jack is connected to one of the pulleys through a tensioning screw, and the jack is arranged on the first base.
7. A prestressed carbon fiber tensioning device according to claim 6, wherein: a concave cavity is formed in the first base, and the tensioning screw penetrates through the concave cavity; a counter-force nut is arranged on the tensioning screw and in the concave cavity; the jack is a feed-through jack, and the tensioning screw penetrates through a feed-through pore passage on the axis of the jack and then is in threaded connection with a tensioning nut.
8. A prestressed carbon fiber tension device as recited in any one of claims 1 to 7, wherein: the cross section of the tensioning cable is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921067704.5U CN210439165U (en) | 2019-07-09 | 2019-07-09 | Prestressed carbon fiber tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921067704.5U CN210439165U (en) | 2019-07-09 | 2019-07-09 | Prestressed carbon fiber tensioning device |
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| Publication Number | Publication Date |
|---|---|
| CN210439165U true CN210439165U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921067704.5U Active CN210439165U (en) | 2019-07-09 | 2019-07-09 | Prestressed carbon fiber tensioning device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370011A (en) * | 2022-01-28 | 2022-04-19 | 中交第一公路勘察设计研究院有限公司 | Bridge external-twisting type prestress reciprocating reinforcing device and reinforcing method |
-
2019
- 2019-07-09 CN CN201921067704.5U patent/CN210439165U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370011A (en) * | 2022-01-28 | 2022-04-19 | 中交第一公路勘察设计研究院有限公司 | Bridge external-twisting type prestress reciprocating reinforcing device and reinforcing method |
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